VERSION = 2013
PATCHLEVEL = 04
SUBLEVEL =
-EXTRAVERSION = -rc2
+EXTRAVERSION = -rc3
ifneq "$(SUBLEVEL)" ""
U_BOOT_VERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
else
LIBS-y += drivers/rtc/librtc.o
LIBS-y += drivers/serial/libserial.o
LIBS-y += drivers/sound/libsound.o
-LIBS-$(CONFIG_GENERIC_LPC_TPM) += drivers/tpm/libtpm.o
+LIBS-y += drivers/tpm/libtpm.o
LIBS-y += drivers/twserial/libtws.o
LIBS-y += drivers/usb/eth/libusb_eth.o
LIBS-y += drivers/usb/gadget/libusb_gadget.o
return 0;
}
-int dram_init(void)
+int dram_init_banksize(void)
{
int i, j;
}
return 0;
}
+
+int dram_init(void)
+{
+ return dram_init_banksize();
+}
static init_fnc_t init_sequence_f[] = {
#if !defined(CONFIG_CPM2) && !defined(CONFIG_MPC512X) && \
!defined(CONFIG_MPC83xx) && !defined(CONFIG_MPC85xx) && \
- !defined(CONFIG_MPC86xx)
+ !defined(CONFIG_MPC86xx) && !defined(CONFIG_X86)
zero_global_data,
#endif
setup_fdt,
#endif
#ifdef CONFIG_X86
dram_init_f, /* configure available RAM banks */
- /* x86 would prefer that this happens after relocation */
- dram_init,
+ calculate_relocation_address,
#endif
announce_dram_init,
/* TODO: unify all these dram functions? */
*/
#ifdef CONFIG_CLOCKS
set_cpu_clk_info, /* Setup clock information */
-#endif
-#ifdef CONFIG_X86
- init_bd_struct_r,
#endif
initr_reloc_global_data,
initr_serial,
printf("Rd Block Len: %d\n", mmc->read_bl_len);
printf("%s version %d.%d\n", IS_SD(mmc) ? "SD" : "MMC",
- (mmc->version >> 4) & 0xf, mmc->version & 0xf);
+ (mmc->version >> 8) & 0xf, mmc->version & 0xff);
printf("High Capacity: %s\n", mmc->high_capacity ? "Yes" : "No");
puts("Capacity: ");
static int env_print(char *name, int flag)
{
char *res = NULL;
- size_t len;
+ ssize_t len;
if (name) { /* print a single name */
ENTRY e, *ep;
}
/* should never happen */
+ printf("## Error: cannot export environment\n");
return 0;
}
/*
- * Copyright (c) 2011 The Chromium OS Authors.
+ * Copyright (c) 2013 The Chromium OS Authors.
*
* See file CREDITS for list of people who contributed to this
* project.
#include <common.h>
#include <command.h>
+#include <malloc.h>
#include <tpm.h>
+#include <asm/unaligned.h>
+#include <linux/string.h>
-#define MAX_TRANSACTION_SIZE 30
+/**
+ * Print a byte string in hexdecimal format, 16-bytes per line.
+ *
+ * @param data byte string to be printed
+ * @param count number of bytes to be printed
+ */
+static void print_byte_string(uint8_t *data, size_t count)
+{
+ int i, print_newline = 0;
-/*
- * tpm_write() expects a variable number of parameters: the internal address
- * followed by data to write, byte by byte.
+ for (i = 0; i < count; i++) {
+ printf(" %02x", data[i]);
+ print_newline = (i % 16 == 15);
+ if (print_newline)
+ putc('\n');
+ }
+ /* Avoid duplicated newline at the end */
+ if (!print_newline)
+ putc('\n');
+}
+
+/**
+ * Convert a text string of hexdecimal values into a byte string.
*
- * Returns 0 on success or -1 on errors (wrong arguments or TPM failure).
+ * @param bytes text string of hexdecimal values with no space
+ * between them
+ * @param data output buffer for byte string. The caller has to make
+ * sure it is large enough for storing the output. If
+ * NULL is passed, a large enough buffer will be allocated,
+ * and the caller must free it.
+ * @param count_ptr output variable for the length of byte string
+ * @return pointer to output buffer
*/
-static int tpm_process(int argc, char * const argv[], cmd_tbl_t *cmdtp)
-{
- u8 tpm_buffer[MAX_TRANSACTION_SIZE];
- u32 write_size, read_size;
- char *p;
- int rv = -1;
-
- for (write_size = 0; write_size < argc; write_size++) {
- u32 datum = simple_strtoul(argv[write_size], &p, 0);
- if (*p || (datum > 0xff)) {
- printf("\n%s: bad data value\n\n", argv[write_size]);
- cmd_usage(cmdtp);
- return rv;
- }
- tpm_buffer[write_size] = (u8)datum;
+static void *parse_byte_string(char *bytes, uint8_t *data, size_t *count_ptr)
+{
+ char byte[3];
+ size_t count, length;
+ int i;
+
+ length = strlen(bytes);
+ count = length / 2;
+
+ if (!data)
+ data = malloc(count);
+ if (!data)
+ return NULL;
+
+ byte[2] = '\0';
+ for (i = 0; i < length; i += 2) {
+ byte[0] = bytes[i];
+ byte[1] = bytes[i + 1];
+ data[i / 2] = (uint8_t)simple_strtoul(byte, NULL, 16);
}
- read_size = sizeof(tpm_buffer);
- if (!tis_sendrecv(tpm_buffer, write_size, tpm_buffer, &read_size)) {
- int i;
- puts("Got TPM response:\n");
- for (i = 0; i < read_size; i++)
- printf(" %2.2x", tpm_buffer[i]);
- puts("\n");
- rv = 0;
- } else {
- puts("tpm command failed\n");
+ if (count_ptr)
+ *count_ptr = count;
+
+ return data;
+}
+
+/**
+ * Convert TPM command return code to U-Boot command error codes.
+ *
+ * @param return_code TPM command return code
+ * @return value of enum command_ret_t
+ */
+static int convert_return_code(uint32_t return_code)
+{
+ if (return_code)
+ return CMD_RET_FAILURE;
+ else
+ return CMD_RET_SUCCESS;
+}
+
+/**
+ * Return number of values defined by a type string.
+ *
+ * @param type_str type string
+ * @return number of values of type string
+ */
+static int type_string_get_num_values(const char *type_str)
+{
+ return strlen(type_str);
+}
+
+/**
+ * Return total size of values defined by a type string.
+ *
+ * @param type_str type string
+ * @return total size of values of type string, or 0 if type string
+ * contains illegal type character.
+ */
+static size_t type_string_get_space_size(const char *type_str)
+{
+ size_t size;
+
+ for (size = 0; *type_str; type_str++) {
+ switch (*type_str) {
+ case 'b':
+ size += 1;
+ break;
+ case 'w':
+ size += 2;
+ break;
+ case 'd':
+ size += 4;
+ break;
+ default:
+ return 0;
+ }
}
- return rv;
+
+ return size;
}
-#define CHECK(exp) do { \
- int _rv = exp; \
- if (_rv) { \
- printf("CHECK: %s %d %x\n", #exp, __LINE__, _rv);\
- } \
- } while (0)
+/**
+ * Allocate a buffer large enough to hold values defined by a type
+ * string. The caller has to free the buffer.
+ *
+ * @param type_str type string
+ * @param count pointer for storing size of buffer
+ * @return pointer to buffer or NULL on error
+ */
+static void *type_string_alloc(const char *type_str, uint32_t *count)
+{
+ void *data;
+ size_t size;
+
+ size = type_string_get_space_size(type_str);
+ if (!size)
+ return NULL;
+ data = malloc(size);
+ if (data)
+ *count = size;
-static int tpm_process_stress(int repeat_count)
+ return data;
+}
+
+/**
+ * Pack values defined by a type string into a buffer. The buffer must have
+ * large enough space.
+ *
+ * @param type_str type string
+ * @param values text strings of values to be packed
+ * @param data output buffer of values
+ * @return 0 on success, non-0 on error
+ */
+static int type_string_pack(const char *type_str, char * const values[],
+ uint8_t *data)
{
- int i;
- int rv = 0;
- u8 request[] = {0x0, 0xc1,
- 0x0, 0x0, 0x0, 0x16,
- 0x0, 0x0, 0x0, 0x65,
- 0x0, 0x0, 0x0, 0x4,
- 0x0, 0x0, 0x0, 0x4,
- 0x0, 0x0, 0x1, 0x9};
- u8 response[MAX_TRANSACTION_SIZE];
- u32 rlength = MAX_TRANSACTION_SIZE;
-
- CHECK(tis_init());
-
- for (i = 0; i < repeat_count; i++) {
- CHECK(tis_open());
- rv = tis_sendrecv(request, sizeof(request), response, &rlength);
- if (rv) {
- printf("tpm test failed at step %d with 0x%x\n", i, rv);
- CHECK(tis_close());
+ size_t offset;
+ uint32_t value;
+
+ for (offset = 0; *type_str; type_str++, values++) {
+ value = simple_strtoul(values[0], NULL, 0);
+ switch (*type_str) {
+ case 'b':
+ data[offset] = value;
+ offset += 1;
+ break;
+ case 'w':
+ put_unaligned_be16(value, data + offset);
+ offset += 2;
+ break;
+ case 'd':
+ put_unaligned_be32(value, data + offset);
+ offset += 4;
break;
+ default:
+ return -1;
}
- CHECK(tis_close());
- if ((response[6] || response[7] || response[8] || response[9])
- && response[9] != 0x26) {
- /* Ignore postinit errors */
- printf("tpm command failed at step %d\n"
- "tpm error code: %02x%02x%02x%02x\n", i,
- response[6], response[7],
- response[8], response[9]);
- rv = -1;
+ }
+
+ return 0;
+}
+
+/**
+ * Read values defined by a type string from a buffer, and write these values
+ * to environment variables.
+ *
+ * @param type_str type string
+ * @param data input buffer of values
+ * @param vars names of environment variables
+ * @return 0 on success, non-0 on error
+ */
+static int type_string_write_vars(const char *type_str, uint8_t *data,
+ char * const vars[])
+{
+ size_t offset;
+ uint32_t value;
+
+ for (offset = 0; *type_str; type_str++, vars++) {
+ switch (*type_str) {
+ case 'b':
+ value = data[offset];
+ offset += 1;
+ break;
+ case 'w':
+ value = get_unaligned_be16(data + offset);
+ offset += 2;
break;
+ case 'd':
+ value = get_unaligned_be32(data + offset);
+ offset += 4;
+ break;
+ default:
+ return -1;
}
+ if (setenv_ulong(*vars, value))
+ return -1;
}
- return rv;
+
+ return 0;
}
+static int do_tpm_startup(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
+{
+ enum tpm_startup_type mode;
-static int do_tpm_many(cmd_tbl_t *cmdtp, int flag,
- int argc, char * const argv[], int repeat_count)
+ if (argc != 2)
+ return CMD_RET_USAGE;
+ if (!strcasecmp("TPM_ST_CLEAR", argv[1])) {
+ mode = TPM_ST_CLEAR;
+ } else if (!strcasecmp("TPM_ST_STATE", argv[1])) {
+ mode = TPM_ST_STATE;
+ } else if (!strcasecmp("TPM_ST_DEACTIVATED", argv[1])) {
+ mode = TPM_ST_DEACTIVATED;
+ } else {
+ printf("Couldn't recognize mode string: %s\n", argv[1]);
+ return CMD_RET_FAILURE;
+ }
+
+ return convert_return_code(tpm_startup(mode));
+}
+
+static int do_tpm_nv_define_space(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
+{
+ uint32_t index, perm, size;
+
+ if (argc != 4)
+ return CMD_RET_USAGE;
+ index = simple_strtoul(argv[1], NULL, 0);
+ perm = simple_strtoul(argv[2], NULL, 0);
+ size = simple_strtoul(argv[3], NULL, 0);
+
+ return convert_return_code(tpm_nv_define_space(index, perm, size));
+}
+static int do_tpm_nv_read_value(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
{
- int rv = 0;
+ uint32_t index, count, rc;
+ void *data;
- if (argc < 7 && repeat_count == 0) {
- puts("command should be at least six bytes in size\n");
- return -1;
+ if (argc != 4)
+ return CMD_RET_USAGE;
+ index = simple_strtoul(argv[1], NULL, 0);
+ data = (void *)simple_strtoul(argv[2], NULL, 0);
+ count = simple_strtoul(argv[3], NULL, 0);
+
+ rc = tpm_nv_read_value(index, data, count);
+ if (!rc) {
+ puts("area content:\n");
+ print_byte_string(data, count);
}
- if (repeat_count > 0) {
- rv = tpm_process_stress(repeat_count);
- return rv;
+ return convert_return_code(rc);
+}
+
+static int do_tpm_nv_write_value(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
+{
+ uint32_t index, rc;
+ size_t count;
+ void *data;
+
+ if (argc != 3)
+ return CMD_RET_USAGE;
+ index = simple_strtoul(argv[1], NULL, 0);
+ data = parse_byte_string(argv[2], NULL, &count);
+ if (!data) {
+ printf("Couldn't parse byte string %s\n", argv[2]);
+ return CMD_RET_FAILURE;
}
- if (tis_init()) {
- puts("tis_init() failed!\n");
- return -1;
+ rc = tpm_nv_write_value(index, data, count);
+ free(data);
+
+ return convert_return_code(rc);
+}
+
+static int do_tpm_extend(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
+{
+ uint32_t index, rc;
+ uint8_t in_digest[20], out_digest[20];
+
+ if (argc != 3)
+ return CMD_RET_USAGE;
+ index = simple_strtoul(argv[1], NULL, 0);
+ if (!parse_byte_string(argv[2], in_digest, NULL)) {
+ printf("Couldn't parse byte string %s\n", argv[2]);
+ return CMD_RET_FAILURE;
}
- if (tis_open()) {
- puts("tis_open() failed!\n");
- return -1;
+ rc = tpm_extend(index, in_digest, out_digest);
+ if (!rc) {
+ puts("PCR value after execution of the command:\n");
+ print_byte_string(out_digest, sizeof(out_digest));
}
- rv = tpm_process(argc - 1, argv + 1, cmdtp);
+ return convert_return_code(rc);
+}
+
+static int do_tpm_pcr_read(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
+{
+ uint32_t index, count, rc;
+ void *data;
+
+ if (argc != 4)
+ return CMD_RET_USAGE;
+ index = simple_strtoul(argv[1], NULL, 0);
+ data = (void *)simple_strtoul(argv[2], NULL, 0);
+ count = simple_strtoul(argv[3], NULL, 0);
- if (tis_close()) {
- puts("tis_close() failed!\n");
- rv = -1;
+ rc = tpm_pcr_read(index, data, count);
+ if (!rc) {
+ puts("Named PCR content:\n");
+ print_byte_string(data, count);
}
- return rv;
+ return convert_return_code(rc);
}
+static int do_tpm_tsc_physical_presence(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
+{
+ uint16_t presence;
+
+ if (argc != 2)
+ return CMD_RET_USAGE;
+ presence = (uint16_t)simple_strtoul(argv[1], NULL, 0);
-static int do_tpm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+ return convert_return_code(tpm_tsc_physical_presence(presence));
+}
+
+static int do_tpm_read_pubek(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
{
- return do_tpm_many(cmdtp, flag, argc, argv, 0);
+ uint32_t count, rc;
+ void *data;
+
+ if (argc != 3)
+ return CMD_RET_USAGE;
+ data = (void *)simple_strtoul(argv[1], NULL, 0);
+ count = simple_strtoul(argv[2], NULL, 0);
+
+ rc = tpm_read_pubek(data, count);
+ if (!rc) {
+ puts("pubek value:\n");
+ print_byte_string(data, count);
+ }
+
+ return convert_return_code(rc);
}
+static int do_tpm_physical_set_deactivated(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
+{
+ uint8_t state;
+
+ if (argc != 2)
+ return CMD_RET_USAGE;
+ state = (uint8_t)simple_strtoul(argv[1], NULL, 0);
-U_BOOT_CMD(tpm, MAX_TRANSACTION_SIZE, 1, do_tpm,
- "<byte> [<byte> ...] - write data and read response",
- "send arbitrary data (at least 6 bytes) to the TPM "
- "device and read the response"
-);
+ return convert_return_code(tpm_physical_set_deactivated(state));
+}
+
+static int do_tpm_get_capability(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
+{
+ uint32_t cap_area, sub_cap, rc;
+ void *cap;
+ size_t count;
+
+ if (argc != 5)
+ return CMD_RET_USAGE;
+ cap_area = simple_strtoul(argv[1], NULL, 0);
+ sub_cap = simple_strtoul(argv[2], NULL, 0);
+ cap = (void *)simple_strtoul(argv[3], NULL, 0);
+ count = simple_strtoul(argv[4], NULL, 0);
+
+ rc = tpm_get_capability(cap_area, sub_cap, cap, count);
+ if (!rc) {
+ puts("capability information:\n");
+ print_byte_string(cap, count);
+ }
+
+ return convert_return_code(rc);
+}
-static int do_tpm_stress(cmd_tbl_t *cmdtp, int flag,
- int argc, char * const argv[])
+#define TPM_COMMAND_NO_ARG(cmd) \
+static int do_##cmd(cmd_tbl_t *cmdtp, int flag, \
+ int argc, char * const argv[]) \
+{ \
+ if (argc != 1) \
+ return CMD_RET_USAGE; \
+ return convert_return_code(cmd()); \
+}
+
+TPM_COMMAND_NO_ARG(tpm_init)
+TPM_COMMAND_NO_ARG(tpm_self_test_full)
+TPM_COMMAND_NO_ARG(tpm_continue_self_test)
+TPM_COMMAND_NO_ARG(tpm_force_clear)
+TPM_COMMAND_NO_ARG(tpm_physical_enable)
+TPM_COMMAND_NO_ARG(tpm_physical_disable)
+
+static int do_tpm_raw_transfer(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
+{
+ void *command;
+ uint8_t response[1024];
+ size_t count, response_length = sizeof(response);
+ uint32_t rc;
+
+ command = parse_byte_string(argv[1], NULL, &count);
+ if (!command) {
+ printf("Couldn't parse byte string %s\n", argv[1]);
+ return CMD_RET_FAILURE;
+ }
+
+ rc = tis_sendrecv(command, count, response, &response_length);
+ free(command);
+ if (!rc) {
+ puts("tpm response:\n");
+ print_byte_string(response, response_length);
+ }
+
+ return convert_return_code(rc);
+}
+
+static int do_tpm_nv_define(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
+{
+ uint32_t index, perm, size;
+
+ if (argc != 4)
+ return CMD_RET_USAGE;
+ size = type_string_get_space_size(argv[1]);
+ if (!size) {
+ printf("Couldn't parse arguments\n");
+ return CMD_RET_USAGE;
+ }
+ index = simple_strtoul(argv[2], NULL, 0);
+ perm = simple_strtoul(argv[3], NULL, 0);
+
+ return convert_return_code(tpm_nv_define_space(index, perm, size));
+}
+
+static int do_tpm_nv_read(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
{
- long unsigned int n;
- int rv;
+ uint32_t index, count, err;
+ void *data;
- if (argc != 2) {
- puts("usage: tpm_stress <count>\n");
- return -1;
+ if (argc < 3)
+ return CMD_RET_USAGE;
+ if (argc != 3 + type_string_get_num_values(argv[1]))
+ return CMD_RET_USAGE;
+ index = simple_strtoul(argv[2], NULL, 0);
+ data = type_string_alloc(argv[1], &count);
+ if (!data) {
+ printf("Couldn't parse arguments\n");
+ return CMD_RET_USAGE;
}
- rv = strict_strtoul(argv[1], 10, &n);
- if (rv) {
- puts("tpm_stress: bad count");
- return -1;
+ err = tpm_nv_read_value(index, data, count);
+ if (!err) {
+ if (type_string_write_vars(argv[1], data, argv + 3)) {
+ printf("Couldn't write to variables\n");
+ err = ~0;
+ }
}
+ free(data);
+
+ return convert_return_code(err);
+}
+
+static int do_tpm_nv_write(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
+{
+ uint32_t index, count, err;
+ void *data;
+
+ if (argc < 3)
+ return CMD_RET_USAGE;
+ if (argc != 3 + type_string_get_num_values(argv[1]))
+ return CMD_RET_USAGE;
+ index = simple_strtoul(argv[2], NULL, 0);
+ data = type_string_alloc(argv[1], &count);
+ if (!data) {
+ printf("Couldn't parse arguments\n");
+ return CMD_RET_USAGE;
+ }
+ if (type_string_pack(argv[1], argv + 3, data)) {
+ printf("Couldn't parse arguments\n");
+ free(data);
+ return CMD_RET_USAGE;
+ }
+
+ err = tpm_nv_write_value(index, data, count);
+ free(data);
+
+ return convert_return_code(err);
+}
+
+#define MAKE_TPM_CMD_ENTRY(cmd) \
+ U_BOOT_CMD_MKENT(cmd, 0, 1, do_tpm_ ## cmd, "", "")
+
+static cmd_tbl_t tpm_commands[] = {
+ U_BOOT_CMD_MKENT(init, 0, 1,
+ do_tpm_init, "", ""),
+ U_BOOT_CMD_MKENT(startup, 0, 1,
+ do_tpm_startup, "", ""),
+ U_BOOT_CMD_MKENT(self_test_full, 0, 1,
+ do_tpm_self_test_full, "", ""),
+ U_BOOT_CMD_MKENT(continue_self_test, 0, 1,
+ do_tpm_continue_self_test, "", ""),
+ U_BOOT_CMD_MKENT(force_clear, 0, 1,
+ do_tpm_force_clear, "", ""),
+ U_BOOT_CMD_MKENT(physical_enable, 0, 1,
+ do_tpm_physical_enable, "", ""),
+ U_BOOT_CMD_MKENT(physical_disable, 0, 1,
+ do_tpm_physical_disable, "", ""),
+ U_BOOT_CMD_MKENT(nv_define_space, 0, 1,
+ do_tpm_nv_define_space, "", ""),
+ U_BOOT_CMD_MKENT(nv_read_value, 0, 1,
+ do_tpm_nv_read_value, "", ""),
+ U_BOOT_CMD_MKENT(nv_write_value, 0, 1,
+ do_tpm_nv_write_value, "", ""),
+ U_BOOT_CMD_MKENT(extend, 0, 1,
+ do_tpm_extend, "", ""),
+ U_BOOT_CMD_MKENT(pcr_read, 0, 1,
+ do_tpm_pcr_read, "", ""),
+ U_BOOT_CMD_MKENT(tsc_physical_presence, 0, 1,
+ do_tpm_tsc_physical_presence, "", ""),
+ U_BOOT_CMD_MKENT(read_pubek, 0, 1,
+ do_tpm_read_pubek, "", ""),
+ U_BOOT_CMD_MKENT(physical_set_deactivated, 0, 1,
+ do_tpm_physical_set_deactivated, "", ""),
+ U_BOOT_CMD_MKENT(get_capability, 0, 1,
+ do_tpm_get_capability, "", ""),
+ U_BOOT_CMD_MKENT(raw_transfer, 0, 1,
+ do_tpm_raw_transfer, "", ""),
+ U_BOOT_CMD_MKENT(nv_define, 0, 1,
+ do_tpm_nv_define, "", ""),
+ U_BOOT_CMD_MKENT(nv_read, 0, 1,
+ do_tpm_nv_read, "", ""),
+ U_BOOT_CMD_MKENT(nv_write, 0, 1,
+ do_tpm_nv_write, "", ""),
+};
+
+static int do_tpm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ cmd_tbl_t *tpm_cmd;
+
+ if (argc < 2)
+ return CMD_RET_USAGE;
+ tpm_cmd = find_cmd_tbl(argv[1], tpm_commands, ARRAY_SIZE(tpm_commands));
+ if (!tpm_cmd)
+ return CMD_RET_USAGE;
- return do_tpm_many(cmdtp, flag, argc, argv, n);
+ return tpm_cmd->cmd(cmdtp, flag, argc - 1, argv + 1);
}
-U_BOOT_CMD(tpm_stress, 2, 1, do_tpm_stress,
- "<n> - stress-test communication with TPM",
- "Repeat a TPM transaction (request-response) N times"
+U_BOOT_CMD(tpm, CONFIG_SYS_MAXARGS, 1, do_tpm,
+"Issue a TPM command",
+"cmd args...\n"
+" - Issue TPM command <cmd> with arguments <args...>.\n"
+"Admin Startup and State Commands:\n"
+" init\n"
+" - Put TPM into a state where it waits for 'startup' command.\n"
+" startup mode\n"
+" - Issue TPM_Starup command. <mode> is one of TPM_ST_CLEAR,\n"
+" TPM_ST_STATE, and TPM_ST_DEACTIVATED.\n"
+"Admin Testing Commands:\n"
+" self_test_full\n"
+" - Test all of the TPM capabilities.\n"
+" continue_self_test\n"
+" - Inform TPM that it should complete the self-test.\n"
+"Admin Opt-in Commands:\n"
+" physical_enable\n"
+" - Set the PERMANENT disable flag to FALSE using physical presence as\n"
+" authorization.\n"
+" physical_disable\n"
+" - Set the PERMANENT disable flag to TRUE using physical presence as\n"
+" authorization.\n"
+" physical_set_deactivated 0|1\n"
+" - Set deactivated flag.\n"
+"Admin Ownership Commands:\n"
+" force_clear\n"
+" - Issue TPM_ForceClear command.\n"
+" tsc_physical_presence flags\n"
+" - Set TPM device's Physical Presence flags to <flags>.\n"
+"The Capability Commands:\n"
+" get_capability cap_area sub_cap addr count\n"
+" - Read <count> bytes of TPM capability indexed by <cap_area> and\n"
+" <sub_cap> to memory address <addr>.\n"
+"Endorsement Key Handling Commands:\n"
+" read_pubek addr count\n"
+" - Read <count> bytes of the public endorsement key to memory\n"
+" address <addr>\n"
+"Integrity Collection and Reporting Commands:\n"
+" extend index digest_hex_string\n"
+" - Add a new measurement to a PCR. Update PCR <index> with the 20-bytes\n"
+" <digest_hex_string>\n"
+" pcr_read index addr count\n"
+" - Read <count> bytes from PCR <index> to memory address <addr>.\n"
+"Non-volatile Storage Commands:\n"
+" nv_define_space index permission size\n"
+" - Establish a space at index <index> with <permission> of <size> bytes.\n"
+" nv_read_value index addr count\n"
+" - Read <count> bytes from space <index> to memory address <addr>.\n"
+" nv_write_value index addr count\n"
+" - Write <count> bytes from memory address <addr> to space <index>.\n"
+"Miscellaneous helper functions:\n"
+" raw_transfer byte_string\n"
+" - Send a byte string <byte_string> to TPM and print the response.\n"
+" Non-volatile storage helper functions:\n"
+" These helper functions treat a non-volatile space as a non-padded\n"
+" sequence of integer values. These integer values are defined by a type\n"
+" string, which is a text string of 'bwd' characters: 'b' means a 8-bit\n"
+" value, 'w' 16-bit value, 'd' 32-bit value. All helper functions take\n"
+" a type string as their first argument.\n"
+" nv_define type_string index perm\n"
+" - Define a space <index> with permission <perm>.\n"
+" nv_read types_string index vars...\n"
+" - Read from space <index> to environment variables <vars...>.\n"
+" nv_write types_string index values...\n"
+" - Write to space <index> from values <values...>.\n"
);
break;
case 2:
mmc->version = SD_VERSION_2;
+ if ((mmc->scr[0] >> 15) & 0x1)
+ mmc->version = SD_VERSION_3;
break;
default:
mmc->version = SD_VERSION_1_0;
mmc->capacity = capacity;
}
+ switch (ext_csd[EXT_CSD_REV]) {
+ case 1:
+ mmc->version = MMC_VERSION_4_1;
+ break;
+ case 2:
+ mmc->version = MMC_VERSION_4_2;
+ break;
+ case 3:
+ mmc->version = MMC_VERSION_4_3;
+ break;
+ case 5:
+ mmc->version = MMC_VERSION_4_41;
+ break;
+ case 6:
+ mmc->version = MMC_VERSION_4_5;
+ break;
+ }
+
/*
* Check whether GROUP_DEF is set, if yes, read out
* group size from ext_csd directly, or calculate
static inline void *
flash_map (flash_info_t * info, flash_sect_t sect, uint offset)
{
- unsigned int byte_offset = offset * info->portwidth / info->chipwidth;
- unsigned int addr = (info->start[sect] + byte_offset);
- unsigned int mask = 0xffffffff << (info->portwidth - 1);
+ unsigned int byte_offset = offset * info->portwidth;
- return (void *)(uintptr_t)(addr & mask);
+ return (void *)(info->start[sect] + byte_offset);
}
static inline void flash_unmap(flash_info_t *info, flash_sect_t sect,
#endif
flash_write64(cword.ll, addr);
break;
- default:
- printf("fwc: Unknown port width %d\n", info->portwidth);
}
/* Ensure all the instructions are fully finished */
prompt, info->start[sector],
flash_read_long (info, sector, 0));
flash_write_cmd (info, sector, 0, info->cmd_reset);
+ udelay(1);
return ERR_TIMOUT;
}
udelay (1); /* also triggers watchdog */
static flash_sect_t find_sector (flash_info_t * info, ulong addr)
{
static flash_sect_t saved_sector; /* previously found sector */
+ static flash_info_t *saved_info; /* previously used flash bank */
flash_sect_t sector = saved_sector;
+ if ((info != saved_info) || (sector >= info->sector_count))
+ sector = 0;
+
while ((info->start[sector] < addr)
&& (sector < info->sector_count - 1))
sector++;
sector--;
saved_sector = sector;
+ saved_info = info;
return sector;
}
/* Check if Flash is (sufficiently) erased */
switch (info->portwidth) {
case FLASH_CFI_8BIT:
- debug("%s: 8-bit 0x%02x\n", __func__, cword.c);
flag = ((flash_read8(dstaddr) & cword.c) == cword.c);
break;
case FLASH_CFI_16BIT:
- debug("%s: 16-bit 0x%04x\n", __func__, cword.w);
flag = ((flash_read16(dstaddr) & cword.w) == cword.w);
break;
case FLASH_CFI_32BIT:
- debug("%s: 32-bit 0x%08lx\n", __func__, cword.l);
flag = ((flash_read32(dstaddr) & cword.l) == cword.l);
break;
case FLASH_CFI_64BIT:
flash_sect_t sect;
int st;
- debug("%s: erasing sectors %d to %d\n", __func__, s_first, s_last);
-
if (info->flash_id != FLASH_MAN_CFI) {
puts ("Can't erase unknown flash type - aborted\n");
return 1;
rcode = 1;
else if (flash_verbose)
putc ('.');
- } else {
- debug("\nSector %d is protected.\n",
- info->protect[sect]);
}
}
unsigned int i;
for (i = 0; i < len; i++)
- p[i] = flash_read_uchar(info, start + (i * 2));
+ p[i] = flash_read_uchar(info, start + i);
}
static void __flash_cmd_reset(flash_info_t *info)
{
int cfi_offset;
+ /* Issue FLASH reset command */
+ flash_cmd_reset(info);
+
for (cfi_offset=0;
cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint);
cfi_offset++) {
- /* Issue FLASH reset command */
- flash_cmd_reset(info);
flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset],
FLASH_CMD_CFI);
- if (flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP, 'Q') &&
- flash_isequal(info, 0,
- FLASH_OFFSET_CFI_RESP + 2, 'R') &&
- flash_isequal(info, 0,
- FLASH_OFFSET_CFI_RESP + 4, 'Y')) {
+ if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
+ && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
+ && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
sizeof(struct cfi_qry));
-#ifdef CONFIG_SYS_FLASH_INTERFACE_WIDTH
- info->interface = CONFIG_SYS_FLASH_INTERFACE_WIDTH;
-#else
info->interface = le16_to_cpu(qry->interface_desc);
- /* Some flash chips can support multiple bus widths.
- * In this case, override the interface width and
- * limit it to the port width.
- */
- if ((info->interface == FLASH_CFI_X8X16) &&
- (info->portwidth == FLASH_CFI_8BIT)) {
- debug("Overriding 16-bit interface"
- " width to 8-bit port width.\n");
- info->interface = FLASH_CFI_X8;
- } else if ((info->interface == FLASH_CFI_X16X32) &&
- (info->portwidth == FLASH_CFI_16BIT)) {
- debug("Overriding 16-bit interface"
- " width to 16-bit port width.\n");
- info->interface = FLASH_CFI_X16;
- }
-#endif
+
info->cfi_offset = flash_offset_cfi[cfi_offset];
debug ("device interface is %d\n",
info->interface);
info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
/* calculate command offsets as in the Linux driver */
- info->addr_unlock1 = 0xaaa;
- info->addr_unlock2 = 0x555;
+ info->addr_unlock1 = 0x555;
+ info->addr_unlock2 = 0x2aa;
/*
* modify the unlock address if we are
for (info->chipwidth = FLASH_CFI_BY8;
info->chipwidth <= info->portwidth;
info->chipwidth <<= 1)
- if (__flash_detect_cfi(info, qry)) {
- debug("Found CFI flash, portwidth %d,"
- " chipwidth %d\n",
- info->portwidth, info->chipwidth);
+ if (__flash_detect_cfi(info, qry))
return 1;
- }
}
debug ("not found\n");
return 0;
/* CFI < 1.1, try to guess from device id */
if ((info->device_id & 0x80) != 0)
cfi_reverse_geometry(qry);
- } else if (flash_read_uchar(info, info->ext_addr + 0x1e) == 3) {
+ } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
/* CFI >= 1.1, deduct from top/bottom flag */
/* note: ext_addr is valid since cfi_version > 0 */
cfi_reverse_geometry(qry);
if (flash_detect_cfi (info, &qry)) {
info->vendor = le16_to_cpu(qry.p_id);
- info->ext_addr = le16_to_cpu(qry.p_adr) * 2;
- debug("extended address is 0x%x\n", info->ext_addr);
+ info->ext_addr = le16_to_cpu(qry.p_adr);
num_erase_regions = qry.num_erase_regions;
if (info->ext_addr) {
info->cfi_version = (ushort) flash_read_uchar (info,
- info->ext_addr + 6) << 8;
+ info->ext_addr + 3) << 8;
info->cfi_version |= (ushort) flash_read_uchar (info,
- info->ext_addr + 8);
+ info->ext_addr + 4);
}
#ifdef DEBUG
debug ("device id is 0x%x\n", info->device_id);
debug ("device id2 is 0x%x\n", info->device_id2);
debug ("cfi version is 0x%04x\n", info->cfi_version);
- debug("port width: %d, chipwidth: %d, interface: %d\n",
- info->portwidth, info->chipwidth, info->interface);
size_ratio = info->portwidth / info->chipwidth;
/* if the chip is x8/x16 reduce the ratio by half */
LIB := $(obj)libtpm.o
+$(shell mkdir -p $(obj)slb9635_i2c)
+
COBJS-$(CONFIG_GENERIC_LPC_TPM) = generic_lpc_tpm.o
+COBJS-$(CONFIG_INFINEON_TPM_I2C) += tis_i2c.o slb9635_i2c/tpm.o
+COBJS-$(CONFIG_INFINEON_TPM_I2C) += slb9635_i2c/tpm_tis_i2c.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
{
u8 ret = readb(ptr);
debug(PREFIX "Read reg 0x%4.4x returns 0x%2.2x\n",
- (u32)ptr - (u32)lpc_tpm_dev, ret);
+ (u32)(uintptr_t)ptr - (u32)(uintptr_t)lpc_tpm_dev, ret);
return ret;
}
{
u32 ret = readl(ptr);
debug(PREFIX "Read reg 0x%4.4x returns 0x%8.8x\n",
- (u32)ptr - (u32)lpc_tpm_dev, ret);
+ (u32)(uintptr_t)ptr - (u32)(uintptr_t)lpc_tpm_dev, ret);
return ret;
}
static void tpm_write_byte(u8 value, u8 *ptr)
{
debug(PREFIX "Write reg 0x%4.4x with 0x%2.2x\n",
- (u32)ptr - (u32)lpc_tpm_dev, value);
+ (u32)(uintptr_t)ptr - (u32)(uintptr_t)lpc_tpm_dev, value);
writeb(value, ptr);
}
static void tpm_write_word(u32 value, u32 *ptr)
{
debug(PREFIX "Write reg 0x%4.4x with 0x%8.8x\n",
- (u32)ptr - (u32)lpc_tpm_dev, value);
+ (u32)(uintptr_t)ptr - (u32)(uintptr_t)lpc_tpm_dev, value);
writel(value, ptr);
}
return TPM_DRIVER_ERR;
}
- return tis_readresponse(recvbuf, recv_len);
+ return tis_readresponse(recvbuf, (u32 *)recv_len);
}
--- /dev/null
+/*
+ * Copyright (C) 2011 Infineon Technologies
+ *
+ * Authors:
+ * Peter Huewe <huewe.external@infineon.com>
+ *
+ * Version: 2.1.1
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _COMPATIBILITY_H_
+#define _COMPATIBILITY_H_
+
+/* all includes from U-Boot */
+#include <linux/types.h>
+#include <linux/unaligned/be_byteshift.h>
+#include <asm-generic/errno.h>
+#include <compiler.h>
+#include <common.h>
+
+/* extended error numbers from linux (see errno.h) */
+#define ECANCELED 125 /* Operation Canceled */
+
+#define msleep(t) udelay((t)*1000)
+
+/* Timer frequency. Corresponds to msec timer resolution*/
+#define HZ 1000
+
+#define dev_dbg(dev, format, arg...) debug(format, ##arg)
+#define dev_err(dev, format, arg...) printf(format, ##arg)
+#define dev_info(dev, format, arg...) debug(format, ##arg)
+#define dbg_printf debug
+
+#endif
--- /dev/null
+/*
+ * Copyright (C) 2011 Infineon Technologies
+ *
+ * Authors:
+ * Peter Huewe <huewe.external@infineon.com>
+ *
+ * Description:
+ * Device driver for TCG/TCPA TPM (trusted platform module).
+ * Specifications at www.trustedcomputinggroup.org
+ *
+ * It is based on the Linux kernel driver tpm.c from Leendert van
+ * Dorn, Dave Safford, Reiner Sailer, and Kyleen Hall.
+ *
+ * Version: 2.1.1
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <malloc.h>
+#include "tpm.h"
+
+/* global structure for tpm chip data */
+struct tpm_chip g_chip;
+
+enum tpm_duration {
+ TPM_SHORT = 0,
+ TPM_MEDIUM = 1,
+ TPM_LONG = 2,
+ TPM_UNDEFINED,
+};
+
+#define TPM_MAX_ORDINAL 243
+#define TPM_MAX_PROTECTED_ORDINAL 12
+#define TPM_PROTECTED_ORDINAL_MASK 0xFF
+
+/*
+ * Array with one entry per ordinal defining the maximum amount
+ * of time the chip could take to return the result. The ordinal
+ * designation of short, medium or long is defined in a table in
+ * TCG Specification TPM Main Part 2 TPM Structures Section 17. The
+ * values of the SHORT, MEDIUM, and LONG durations are retrieved
+ * from the chip during initialization with a call to tpm_get_timeouts.
+ */
+static const u8 tpm_protected_ordinal_duration[TPM_MAX_PROTECTED_ORDINAL] = {
+ TPM_UNDEFINED, /* 0 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 5 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 10 */
+ TPM_SHORT,
+};
+
+static const u8 tpm_ordinal_duration[TPM_MAX_ORDINAL] = {
+ TPM_UNDEFINED, /* 0 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 5 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 10 */
+ TPM_SHORT,
+ TPM_MEDIUM,
+ TPM_LONG,
+ TPM_LONG,
+ TPM_MEDIUM, /* 15 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_MEDIUM,
+ TPM_LONG,
+ TPM_SHORT, /* 20 */
+ TPM_SHORT,
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_SHORT, /* 25 */
+ TPM_SHORT,
+ TPM_MEDIUM,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_MEDIUM, /* 30 */
+ TPM_LONG,
+ TPM_MEDIUM,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT, /* 35 */
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_MEDIUM, /* 40 */
+ TPM_LONG,
+ TPM_MEDIUM,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT, /* 45 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_LONG,
+ TPM_MEDIUM, /* 50 */
+ TPM_MEDIUM,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 55 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_MEDIUM, /* 60 */
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_MEDIUM, /* 65 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 70 */
+ TPM_SHORT,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 75 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_LONG, /* 80 */
+ TPM_UNDEFINED,
+ TPM_MEDIUM,
+ TPM_LONG,
+ TPM_SHORT,
+ TPM_UNDEFINED, /* 85 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 90 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_UNDEFINED, /* 95 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_MEDIUM, /* 100 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 105 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 110 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT, /* 115 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_LONG, /* 120 */
+ TPM_LONG,
+ TPM_MEDIUM,
+ TPM_UNDEFINED,
+ TPM_SHORT,
+ TPM_SHORT, /* 125 */
+ TPM_SHORT,
+ TPM_LONG,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT, /* 130 */
+ TPM_MEDIUM,
+ TPM_UNDEFINED,
+ TPM_SHORT,
+ TPM_MEDIUM,
+ TPM_UNDEFINED, /* 135 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 140 */
+ TPM_SHORT,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 145 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 150 */
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_UNDEFINED, /* 155 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 160 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 165 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_LONG, /* 170 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 175 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_MEDIUM, /* 180 */
+ TPM_SHORT,
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_MEDIUM, /* 185 */
+ TPM_SHORT,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 190 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 195 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 200 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT,
+ TPM_SHORT, /* 205 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_MEDIUM, /* 210 */
+ TPM_UNDEFINED,
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_MEDIUM,
+ TPM_UNDEFINED, /* 215 */
+ TPM_MEDIUM,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT,
+ TPM_SHORT, /* 220 */
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_SHORT,
+ TPM_UNDEFINED, /* 225 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 230 */
+ TPM_LONG,
+ TPM_MEDIUM,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED, /* 235 */
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_UNDEFINED,
+ TPM_SHORT, /* 240 */
+ TPM_UNDEFINED,
+ TPM_MEDIUM,
+};
+
+/*
+ * Returns max number of milliseconds to wait
+ */
+unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal)
+{
+ int duration_idx = TPM_UNDEFINED;
+ int duration = 0;
+
+ if (ordinal < TPM_MAX_ORDINAL)
+ duration_idx = tpm_ordinal_duration[ordinal];
+ else if ((ordinal & TPM_PROTECTED_ORDINAL_MASK) <
+ TPM_MAX_PROTECTED_ORDINAL)
+ duration_idx =
+ tpm_protected_ordinal_duration[ordinal &
+ TPM_PROTECTED_ORDINAL_MASK];
+
+ if (duration_idx != TPM_UNDEFINED)
+ duration = chip->vendor.duration[duration_idx];
+ if (duration <= 0)
+ return 2 * 60 * HZ; /*two minutes timeout*/
+ else
+ return duration;
+}
+
+#define TPM_CMD_COUNT_BYTE 2
+#define TPM_CMD_ORDINAL_BYTE 6
+
+ssize_t tpm_transmit(const unsigned char *buf, size_t bufsiz)
+{
+ ssize_t rc;
+ u32 count, ordinal;
+ unsigned long start, stop;
+
+ struct tpm_chip *chip = &g_chip;
+
+ /* switch endianess: big->little */
+ count = get_unaligned_be32(buf + TPM_CMD_COUNT_BYTE);
+ ordinal = get_unaligned_be32(buf + TPM_CMD_ORDINAL_BYTE);
+
+ if (count == 0) {
+ dev_err(chip->dev, "no data\n");
+ return -ENODATA;
+ }
+ if (count > bufsiz) {
+ dev_err(chip->dev,
+ "invalid count value %x %zx\n", count, bufsiz);
+ return -E2BIG;
+ }
+
+ rc = chip->vendor.send(chip, (u8 *)buf, count);
+ if (rc < 0) {
+ dev_err(chip->dev, "tpm_transmit: tpm_send: error %zd\n", rc);
+ goto out;
+ }
+
+ if (chip->vendor.irq)
+ goto out_recv;
+
+ start = get_timer(0);
+ stop = tpm_calc_ordinal_duration(chip, ordinal);
+ do {
+ dbg_printf("waiting for status...\n");
+ u8 status = chip->vendor.status(chip);
+ if ((status & chip->vendor.req_complete_mask) ==
+ chip->vendor.req_complete_val) {
+ dbg_printf("...got it;\n");
+ goto out_recv;
+ }
+
+ if ((status == chip->vendor.req_canceled)) {
+ dev_err(chip->dev, "Operation Canceled\n");
+ rc = -ECANCELED;
+ goto out;
+ }
+ msleep(TPM_TIMEOUT);
+ } while (get_timer(start) < stop);
+
+ chip->vendor.cancel(chip);
+ dev_err(chip->dev, "Operation Timed out\n");
+ rc = -ETIME;
+ goto out;
+
+out_recv:
+
+ dbg_printf("out_recv: reading response...\n");
+ rc = chip->vendor.recv(chip, (u8 *)buf, TPM_BUFSIZE);
+ if (rc < 0)
+ dev_err(chip->dev, "tpm_transmit: tpm_recv: error %zd\n", rc);
+out:
+ return rc;
+}
+
+#define TPM_ERROR_SIZE 10
+
+enum tpm_capabilities {
+ TPM_CAP_PROP = cpu_to_be32(5),
+};
+
+enum tpm_sub_capabilities {
+ TPM_CAP_PROP_TIS_TIMEOUT = cpu_to_be32(0x115),
+ TPM_CAP_PROP_TIS_DURATION = cpu_to_be32(0x120),
+};
+
+struct tpm_chip *tpm_register_hardware(const struct tpm_vendor_specific *entry)
+{
+ struct tpm_chip *chip;
+
+ /* Driver specific per-device data */
+ chip = &g_chip;
+ memcpy(&chip->vendor, entry, sizeof(struct tpm_vendor_specific));
+ chip->is_open = 1;
+
+ return chip;
+}
+
+int tpm_open(uint32_t dev_addr)
+{
+ int rc;
+ if (g_chip.is_open)
+ return -EBUSY;
+ rc = tpm_vendor_init(dev_addr);
+ if (rc < 0)
+ g_chip.is_open = 0;
+ return rc;
+}
+
+void tpm_close(void)
+{
+ if (g_chip.is_open) {
+ tpm_vendor_cleanup(&g_chip);
+ g_chip.is_open = 0;
+ }
+}
--- /dev/null
+/*
+ * Copyright (C) 2011 Infineon Technologies
+ *
+ * Authors:
+ * Peter Huewe <huewe.external@infineon.com>
+ *
+ * Version: 2.1.1
+ *
+ * Description:
+ * Device driver for TCG/TCPA TPM (trusted platform module).
+ * Specifications at www.trustedcomputinggroup.org
+ *
+ * It is based on the Linux kernel driver tpm.c from Leendert van
+ * Dorn, Dave Safford, Reiner Sailer, and Kyleen Hall.
+ *
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _TPM_H_
+#define _TPM_H_
+
+#include <linux/compiler.h>
+
+#include "compatibility.h"
+
+enum tpm_timeout {
+ TPM_TIMEOUT = 5, /* msecs */
+};
+
+/* Size of external transmit buffer (used in tpm_transmit)*/
+#define TPM_BUFSIZE 4096
+
+/* Index of fields in TPM command buffer */
+#define TPM_CMD_SIZE_BYTE 2
+#define TPM_CMD_ORDINAL_BYTE 6
+
+/* Index of Count field in TPM response buffer */
+#define TPM_RSP_SIZE_BYTE 2
+#define TPM_RSP_RC_BYTE 6
+
+struct tpm_chip;
+
+struct tpm_vendor_specific {
+ const u8 req_complete_mask;
+ const u8 req_complete_val;
+ const u8 req_canceled;
+ int irq;
+ int (*recv) (struct tpm_chip *, u8 *, size_t);
+ int (*send) (struct tpm_chip *, u8 *, size_t);
+ void (*cancel) (struct tpm_chip *);
+ u8(*status) (struct tpm_chip *);
+ int locality;
+ unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* msec */
+ unsigned long duration[3]; /* msec */
+};
+
+struct tpm_chip {
+ int is_open;
+ struct tpm_vendor_specific vendor;
+};
+
+struct tpm_input_header {
+ __be16 tag;
+ __be32 length;
+ __be32 ordinal;
+} __packed;
+
+struct tpm_output_header {
+ __be16 tag;
+ __be32 length;
+ __be32 return_code;
+} __packed;
+
+struct timeout_t {
+ __be32 a;
+ __be32 b;
+ __be32 c;
+ __be32 d;
+} __packed;
+
+struct duration_t {
+ __be32 tpm_short;
+ __be32 tpm_medium;
+ __be32 tpm_long;
+} __packed;
+
+union cap_t {
+ struct timeout_t timeout;
+ struct duration_t duration;
+};
+
+struct tpm_getcap_params_in {
+ __be32 cap;
+ __be32 subcap_size;
+ __be32 subcap;
+} __packed;
+
+struct tpm_getcap_params_out {
+ __be32 cap_size;
+ union cap_t cap;
+} __packed;
+
+union tpm_cmd_header {
+ struct tpm_input_header in;
+ struct tpm_output_header out;
+};
+
+union tpm_cmd_params {
+ struct tpm_getcap_params_out getcap_out;
+ struct tpm_getcap_params_in getcap_in;
+};
+
+struct tpm_cmd_t {
+ union tpm_cmd_header header;
+ union tpm_cmd_params params;
+} __packed;
+
+
+/* ---------- Interface for TPM vendor ------------ */
+
+extern struct tpm_chip *tpm_register_hardware(
+ const struct tpm_vendor_specific *);
+
+extern int tpm_vendor_init(uint32_t dev_addr);
+
+extern void tpm_vendor_cleanup(struct tpm_chip *chip);
+
+/* ---------- Interface for TDDL ------------------- */
+
+/*
+ * if dev_addr != 0 - redefines TPM device address
+ * Returns < 0 on error, 0 on success.
+ */
+extern int tpm_open(uint32_t dev_addr);
+
+extern void tpm_close(void);
+
+/*
+ * Transmit bufsiz bytes out of buf to TPM and get results back in buf, too.
+ * Returns < 0 on error, 0 on success.
+ */
+extern ssize_t tpm_transmit(const unsigned char *buf, size_t bufsiz);
+
+#endif
--- /dev/null
+/*
+ * Copyright (C) 2011 Infineon Technologies
+ *
+ * Authors:
+ * Peter Huewe <huewe.external@infineon.com>
+ *
+ * Description:
+ * Device driver for TCG/TCPA TPM (trusted platform module).
+ * Specifications at www.trustedcomputinggroup.org
+ *
+ * This device driver implements the TPM interface as defined in
+ * the TCG TPM Interface Spec version 1.2, revision 1.0 and the
+ * Infineon I2C Protocol Stack Specification v0.20.
+ *
+ * It is based on the Linux kernel driver tpm.c from Leendert van
+ * Dorn, Dave Safford, Reiner Sailer, and Kyleen Hall.
+ *
+ * Version: 2.1.1
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <linux/types.h>
+
+#include "compatibility.h"
+#include "tpm.h"
+
+/* max. buffer size supported by our tpm */
+#ifdef TPM_BUFSIZE
+#undef TPM_BUFSIZE
+#endif
+#define TPM_BUFSIZE 1260
+/* Address of the TPM on the I2C bus */
+#define TPM_I2C_ADDR 0x20
+/* max. number of iterations after i2c NAK */
+#define MAX_COUNT 3
+
+#define SLEEP_DURATION 60 /*in usec*/
+
+/* max. number of iterations after i2c NAK for 'long' commands
+ * we need this especially for sending TPM_READY, since the cleanup after the
+ * transtion to the ready state may take some time, but it is unpredictable
+ * how long it will take.
+ */
+#define MAX_COUNT_LONG 50
+
+#define SLEEP_DURATION_LONG 210 /* in usec */
+
+/* expected value for DIDVID register */
+#define TPM_TIS_I2C_DID_VID 0x000b15d1L
+
+/* Structure to store I2C TPM specific stuff */
+struct tpm_inf_dev {
+ uint addr;
+ u8 buf[TPM_BUFSIZE + sizeof(u8)]; /* max. buffer size + addr */
+};
+
+static struct tpm_inf_dev tpm_dev = {
+ .addr = TPM_I2C_ADDR
+};
+
+/*
+ * iic_tpm_read() - read from TPM register
+ * @addr: register address to read from
+ * @buffer: provided by caller
+ * @len: number of bytes to read
+ *
+ * Read len bytes from TPM register and put them into
+ * buffer (little-endian format, i.e. first byte is put into buffer[0]).
+ *
+ * NOTE: TPM is big-endian for multi-byte values. Multi-byte
+ * values have to be swapped.
+ *
+ * Return -EIO on error, 0 on success.
+ */
+int iic_tpm_read(u8 addr, u8 *buffer, size_t len)
+{
+ int rc;
+ int count;
+ uint myaddr = addr;
+ /* we have to use uint here, uchar hangs the board */
+
+ for (count = 0; count < MAX_COUNT; count++) {
+ rc = i2c_write(tpm_dev.addr, 0, 0, (uchar *)&myaddr, 1);
+ if (rc == 0)
+ break; /*success, break to skip sleep*/
+
+ udelay(SLEEP_DURATION);
+ }
+
+ if (rc)
+ return -rc;
+
+ /* After the TPM has successfully received the register address it needs
+ * some time, thus we're sleeping here again, before retrieving the data
+ */
+ for (count = 0; count < MAX_COUNT; count++) {
+ udelay(SLEEP_DURATION);
+ rc = i2c_read(tpm_dev.addr, 0, 0, buffer, len);
+ if (rc == 0)
+ break; /*success, break to skip sleep*/
+ }
+
+ if (rc)
+ return -rc;
+
+ return 0;
+}
+
+static int iic_tpm_write_generic(u8 addr, u8 *buffer, size_t len,
+ unsigned int sleep_time,
+ u8 max_count)
+{
+ int rc = 0;
+ int count;
+
+ /* prepare send buffer */
+ tpm_dev.buf[0] = addr;
+ memcpy(&(tpm_dev.buf[1]), buffer, len);
+
+ for (count = 0; count < max_count; count++) {
+ rc = i2c_write(tpm_dev.addr, 0, 0, tpm_dev.buf, len + 1);
+ if (rc == 0)
+ break; /*success, break to skip sleep*/
+
+ udelay(sleep_time);
+ }
+
+ if (rc)
+ return -rc;
+
+ return 0;
+}
+
+/*
+ * iic_tpm_write() - write to TPM register
+ * @addr: register address to write to
+ * @buffer: containing data to be written
+ * @len: number of bytes to write
+ *
+ * Write len bytes from provided buffer to TPM register (little
+ * endian format, i.e. buffer[0] is written as first byte).
+ *
+ * NOTE: TPM is big-endian for multi-byte values. Multi-byte
+ * values have to be swapped.
+ *
+ * NOTE: use this function instead of the iic_tpm_write_generic function.
+ *
+ * Return -EIO on error, 0 on success
+ */
+static int iic_tpm_write(u8 addr, u8 *buffer, size_t len)
+{
+ return iic_tpm_write_generic(addr, buffer, len, SLEEP_DURATION,
+ MAX_COUNT);
+}
+
+/*
+ * This function is needed especially for the cleanup situation after
+ * sending TPM_READY
+ * */
+static int iic_tpm_write_long(u8 addr, u8 *buffer, size_t len)
+{
+ return iic_tpm_write_generic(addr, buffer, len, SLEEP_DURATION_LONG,
+ MAX_COUNT_LONG);
+}
+
+#define TPM_HEADER_SIZE 10
+
+enum tis_access {
+ TPM_ACCESS_VALID = 0x80,
+ TPM_ACCESS_ACTIVE_LOCALITY = 0x20,
+ TPM_ACCESS_REQUEST_PENDING = 0x04,
+ TPM_ACCESS_REQUEST_USE = 0x02,
+};
+
+enum tis_status {
+ TPM_STS_VALID = 0x80,
+ TPM_STS_COMMAND_READY = 0x40,
+ TPM_STS_GO = 0x20,
+ TPM_STS_DATA_AVAIL = 0x10,
+ TPM_STS_DATA_EXPECT = 0x08,
+};
+
+enum tis_defaults {
+ TIS_SHORT_TIMEOUT = 750, /* ms */
+ TIS_LONG_TIMEOUT = 2000, /* 2 sec */
+};
+
+#define TPM_ACCESS(l) (0x0000 | ((l) << 4))
+#define TPM_STS(l) (0x0001 | ((l) << 4))
+#define TPM_DATA_FIFO(l) (0x0005 | ((l) << 4))
+#define TPM_DID_VID(l) (0x0006 | ((l) << 4))
+
+static int check_locality(struct tpm_chip *chip, int loc)
+{
+ u8 buf;
+ int rc;
+
+ rc = iic_tpm_read(TPM_ACCESS(loc), &buf, 1);
+ if (rc < 0)
+ return rc;
+
+ if ((buf & (TPM_ACCESS_ACTIVE_LOCALITY | TPM_ACCESS_VALID)) ==
+ (TPM_ACCESS_ACTIVE_LOCALITY | TPM_ACCESS_VALID)) {
+ chip->vendor.locality = loc;
+ return loc;
+ }
+
+ return -1;
+}
+
+static void release_locality(struct tpm_chip *chip, int loc, int force)
+{
+ u8 buf;
+ if (iic_tpm_read(TPM_ACCESS(loc), &buf, 1) < 0)
+ return;
+
+ if (force || (buf & (TPM_ACCESS_REQUEST_PENDING | TPM_ACCESS_VALID)) ==
+ (TPM_ACCESS_REQUEST_PENDING | TPM_ACCESS_VALID)) {
+ buf = TPM_ACCESS_ACTIVE_LOCALITY;
+ iic_tpm_write(TPM_ACCESS(loc), &buf, 1);
+ }
+}
+
+static int request_locality(struct tpm_chip *chip, int loc)
+{
+ unsigned long start, stop;
+ u8 buf = TPM_ACCESS_REQUEST_USE;
+
+ if (check_locality(chip, loc) >= 0)
+ return loc; /* we already have the locality */
+
+ iic_tpm_write(TPM_ACCESS(loc), &buf, 1);
+
+ /* wait for burstcount */
+ start = get_timer(0);
+ stop = chip->vendor.timeout_a;
+ do {
+ if (check_locality(chip, loc) >= 0)
+ return loc;
+ msleep(TPM_TIMEOUT);
+ } while (get_timer(start) < stop);
+
+ return -1;
+}
+
+static u8 tpm_tis_i2c_status(struct tpm_chip *chip)
+{
+ /* NOTE: since i2c read may fail, return 0 in this case --> time-out */
+ u8 buf;
+ if (iic_tpm_read(TPM_STS(chip->vendor.locality), &buf, 1) < 0)
+ return 0;
+ else
+ return buf;
+}
+
+static void tpm_tis_i2c_ready(struct tpm_chip *chip)
+{
+ /* this causes the current command to be aborted */
+ u8 buf = TPM_STS_COMMAND_READY;
+ iic_tpm_write_long(TPM_STS(chip->vendor.locality), &buf, 1);
+}
+
+static ssize_t get_burstcount(struct tpm_chip *chip)
+{
+ unsigned long start, stop;
+ ssize_t burstcnt;
+ u8 buf[3];
+
+ /* wait for burstcount */
+ /* which timeout value, spec has 2 answers (c & d) */
+ start = get_timer(0);
+ stop = chip->vendor.timeout_d;
+ do {
+ /* Note: STS is little endian */
+ if (iic_tpm_read(TPM_STS(chip->vendor.locality) + 1, buf, 3)
+ < 0)
+ burstcnt = 0;
+ else
+ burstcnt = (buf[2] << 16) + (buf[1] << 8) + buf[0];
+
+ if (burstcnt)
+ return burstcnt;
+ msleep(TPM_TIMEOUT);
+ } while (get_timer(start) < stop);
+
+ return -EBUSY;
+}
+
+static int wait_for_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout,
+ int *status)
+{
+ unsigned long start, stop;
+
+ /* check current status */
+ *status = tpm_tis_i2c_status(chip);
+ if ((*status & mask) == mask)
+ return 0;
+
+ start = get_timer(0);
+ stop = timeout;
+ do {
+ msleep(TPM_TIMEOUT);
+ *status = tpm_tis_i2c_status(chip);
+ if ((*status & mask) == mask)
+ return 0;
+
+ } while (get_timer(start) < stop);
+
+ return -ETIME;
+}
+
+static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count)
+{
+ size_t size = 0;
+ ssize_t burstcnt;
+ int rc;
+
+ while (size < count) {
+ burstcnt = get_burstcount(chip);
+
+ /* burstcount < 0 = tpm is busy */
+ if (burstcnt < 0)
+ return burstcnt;
+
+ /* limit received data to max. left */
+ if (burstcnt > (count - size))
+ burstcnt = count - size;
+
+ rc = iic_tpm_read(TPM_DATA_FIFO(chip->vendor.locality),
+ &(buf[size]),
+ burstcnt);
+ if (rc == 0)
+ size += burstcnt;
+ }
+
+ return size;
+}
+
+static int tpm_tis_i2c_recv(struct tpm_chip *chip, u8 *buf, size_t count)
+{
+ int size = 0;
+ int expected, status;
+
+ if (count < TPM_HEADER_SIZE) {
+ size = -EIO;
+ goto out;
+ }
+
+ /* read first 10 bytes, including tag, paramsize, and result */
+ size = recv_data(chip, buf, TPM_HEADER_SIZE);
+ if (size < TPM_HEADER_SIZE) {
+ dev_err(chip->dev, "Unable to read header\n");
+ goto out;
+ }
+
+ expected = get_unaligned_be32(buf + TPM_RSP_SIZE_BYTE);
+ if ((size_t)expected > count) {
+ size = -EIO;
+ goto out;
+ }
+
+ size += recv_data(chip, &buf[TPM_HEADER_SIZE],
+ expected - TPM_HEADER_SIZE);
+ if (size < expected) {
+ dev_err(chip->dev, "Unable to read remainder of result\n");
+ size = -ETIME;
+ goto out;
+ }
+
+ wait_for_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c, &status);
+ if (status & TPM_STS_DATA_AVAIL) { /* retry? */
+ dev_err(chip->dev, "Error left over data\n");
+ size = -EIO;
+ goto out;
+ }
+
+out:
+ tpm_tis_i2c_ready(chip);
+ /* The TPM needs some time to clean up here,
+ * so we sleep rather than keeping the bus busy
+ */
+ udelay(2000);
+ release_locality(chip, chip->vendor.locality, 0);
+
+ return size;
+}
+
+static int tpm_tis_i2c_send(struct tpm_chip *chip, u8 *buf, size_t len)
+{
+ int rc, status;
+ ssize_t burstcnt;
+ size_t count = 0;
+ u8 sts = TPM_STS_GO;
+
+ if (len > TPM_BUFSIZE)
+ return -E2BIG; /* command is too long for our tpm, sorry */
+
+ if (request_locality(chip, 0) < 0)
+ return -EBUSY;
+
+ status = tpm_tis_i2c_status(chip);
+ if ((status & TPM_STS_COMMAND_READY) == 0) {
+ tpm_tis_i2c_ready(chip);
+ if (wait_for_stat
+ (chip, TPM_STS_COMMAND_READY,
+ chip->vendor.timeout_b, &status) < 0) {
+ rc = -ETIME;
+ goto out_err;
+ }
+ }
+
+ while (count < len - 1) {
+ burstcnt = get_burstcount(chip);
+
+ /* burstcount < 0 = tpm is busy */
+ if (burstcnt < 0)
+ return burstcnt;
+
+ if (burstcnt > (len-1-count))
+ burstcnt = len-1-count;
+
+#ifdef CONFIG_TPM_I2C_BURST_LIMITATION
+ if (burstcnt > CONFIG_TPM_I2C_BURST_LIMITATION)
+ burstcnt = CONFIG_TPM_I2C_BURST_LIMITATION;
+#endif /* CONFIG_TPM_I2C_BURST_LIMITATION */
+
+ rc = iic_tpm_write(TPM_DATA_FIFO(chip->vendor.locality),
+ &(buf[count]), burstcnt);
+ if (rc == 0)
+ count += burstcnt;
+
+ wait_for_stat(chip, TPM_STS_VALID,
+ chip->vendor.timeout_c, &status);
+
+ if ((status & TPM_STS_DATA_EXPECT) == 0) {
+ rc = -EIO;
+ goto out_err;
+ }
+ }
+
+ /* write last byte */
+ iic_tpm_write(TPM_DATA_FIFO(chip->vendor.locality), &(buf[count]), 1);
+ wait_for_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c, &status);
+ if ((status & TPM_STS_DATA_EXPECT) != 0) {
+ rc = -EIO;
+ goto out_err;
+ }
+
+ /* go and do it */
+ iic_tpm_write(TPM_STS(chip->vendor.locality), &sts, 1);
+
+ return len;
+out_err:
+ tpm_tis_i2c_ready(chip);
+ /* The TPM needs some time to clean up here,
+ * so we sleep rather than keeping the bus busy
+ */
+ udelay(2000);
+ release_locality(chip, chip->vendor.locality, 0);
+
+ return rc;
+}
+
+static struct tpm_vendor_specific tpm_tis_i2c = {
+ .status = tpm_tis_i2c_status,
+ .recv = tpm_tis_i2c_recv,
+ .send = tpm_tis_i2c_send,
+ .cancel = tpm_tis_i2c_ready,
+ .req_complete_mask = TPM_STS_DATA_AVAIL | TPM_STS_VALID,
+ .req_complete_val = TPM_STS_DATA_AVAIL | TPM_STS_VALID,
+ .req_canceled = TPM_STS_COMMAND_READY,
+};
+
+/* initialisation of i2c tpm */
+
+
+int tpm_vendor_init(uint32_t dev_addr)
+{
+ u32 vendor;
+ uint old_addr;
+ int rc = 0;
+ struct tpm_chip *chip;
+
+ old_addr = tpm_dev.addr;
+ if (dev_addr != 0)
+ tpm_dev.addr = dev_addr;
+
+ chip = tpm_register_hardware(&tpm_tis_i2c);
+ if (chip < 0) {
+ rc = -ENODEV;
+ goto out_err;
+ }
+
+ /* Disable interrupts (not supported) */
+ chip->vendor.irq = 0;
+
+ /* Default timeouts */
+ chip->vendor.timeout_a = TIS_SHORT_TIMEOUT;
+ chip->vendor.timeout_b = TIS_LONG_TIMEOUT;
+ chip->vendor.timeout_c = TIS_SHORT_TIMEOUT;
+ chip->vendor.timeout_d = TIS_SHORT_TIMEOUT;
+
+ if (request_locality(chip, 0) != 0) {
+ rc = -ENODEV;
+ goto out_err;
+ }
+
+ /* read four bytes from DID_VID register */
+ if (iic_tpm_read(TPM_DID_VID(0), (uchar *)&vendor, 4) < 0) {
+ rc = -EIO;
+ goto out_release;
+ }
+
+ /* create DID_VID register value, after swapping to little-endian */
+ vendor = be32_to_cpu(vendor);
+
+ if (vendor != TPM_TIS_I2C_DID_VID) {
+ rc = -ENODEV;
+ goto out_release;
+ }
+
+ dev_info(dev, "1.2 TPM (device-id 0x%X)\n", vendor >> 16);
+
+ /*
+ * A timeout query to TPM can be placed here.
+ * Standard timeout values are used so far
+ */
+
+ return 0;
+
+out_release:
+ release_locality(chip, 0, 1);
+
+out_err:
+ tpm_dev.addr = old_addr;
+ return rc;
+}
+
+void tpm_vendor_cleanup(struct tpm_chip *chip)
+{
+ release_locality(chip, chip->vendor.locality, 1);
+}
--- /dev/null
+/*
+ * Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <config.h>
+#include <common.h>
+#include <fdtdec.h>
+#include <i2c.h>
+#include "slb9635_i2c/tpm.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* TPM configuration */
+struct tpm {
+ int i2c_bus;
+ int slave_addr;
+ char inited;
+ int old_bus;
+} tpm;
+
+
+static int tpm_select(void)
+{
+ int ret;
+
+ tpm.old_bus = i2c_get_bus_num();
+ if (tpm.old_bus != tpm.i2c_bus) {
+ ret = i2c_set_bus_num(tpm.i2c_bus);
+ if (ret) {
+ debug("%s: Fail to set i2c bus %d\n", __func__,
+ tpm.i2c_bus);
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static int tpm_deselect(void)
+{
+ int ret;
+
+ if (tpm.old_bus != i2c_get_bus_num()) {
+ ret = i2c_set_bus_num(tpm.old_bus);
+ if (ret) {
+ debug("%s: Fail to restore i2c bus %d\n",
+ __func__, tpm.old_bus);
+ return -1;
+ }
+ }
+ tpm.old_bus = -1;
+ return 0;
+}
+
+/**
+ * Decode TPM configuration.
+ *
+ * @param dev Returns a configuration of TPM device
+ * @return 0 if ok, -1 on error
+ */
+static int tpm_decode_config(struct tpm *dev)
+{
+#ifdef CONFIG_OF_CONTROL
+ const void *blob = gd->fdt_blob;
+ int node, parent;
+ int i2c_bus;
+
+ node = fdtdec_next_compatible(blob, 0, COMPAT_INFINEON_SLB9635_TPM);
+ if (node < 0) {
+ debug("%s: Node not found\n", __func__);
+ return -1;
+ }
+ parent = fdt_parent_offset(blob, node);
+ if (parent < 0) {
+ debug("%s: Cannot find node parent\n", __func__);
+ return -1;
+ }
+ i2c_bus = i2c_get_bus_num_fdt(parent);
+ if (i2c_bus < 0)
+ return -1;
+ dev->i2c_bus = i2c_bus;
+ dev->slave_addr = fdtdec_get_addr(blob, node, "reg");
+#else
+ dev->i2c_bus = CONFIG_INFINEON_TPM_I2C_BUS;
+ dev->slave_addr = CONFIG_INFINEON_TPM_I2C_ADDR;
+#endif
+ return 0;
+}
+
+int tis_init(void)
+{
+ if (tpm.inited)
+ return 0;
+
+ if (tpm_decode_config(&tpm))
+ return -1;
+
+ if (tpm_select())
+ return -1;
+
+ /*
+ * Probe TPM twice; the first probing might fail because TPM is asleep,
+ * and the probing can wake up TPM.
+ */
+ if (i2c_probe(tpm.slave_addr) && i2c_probe(tpm.slave_addr)) {
+ debug("%s: fail to probe i2c addr 0x%x\n", __func__,
+ tpm.slave_addr);
+ return -1;
+ }
+
+ tpm_deselect();
+
+ tpm.inited = 1;
+
+ return 0;
+}
+
+int tis_open(void)
+{
+ int rc;
+
+ if (!tpm.inited)
+ return -1;
+
+ if (tpm_select())
+ return -1;
+
+ rc = tpm_open(tpm.slave_addr);
+
+ tpm_deselect();
+
+ return rc;
+}
+
+int tis_close(void)
+{
+ if (!tpm.inited)
+ return -1;
+
+ if (tpm_select())
+ return -1;
+
+ tpm_close();
+
+ tpm_deselect();
+
+ return 0;
+}
+
+int tis_sendrecv(const uint8_t *sendbuf, size_t sbuf_size,
+ uint8_t *recvbuf, size_t *rbuf_len)
+{
+ int len;
+ uint8_t buf[4096];
+
+ if (!tpm.inited)
+ return -1;
+
+ if (sizeof(buf) < sbuf_size)
+ return -1;
+
+ memcpy(buf, sendbuf, sbuf_size);
+
+ if (tpm_select())
+ return -1;
+
+ len = tpm_transmit(buf, sbuf_size);
+
+ tpm_deselect();
+
+ if (len < 10) {
+ *rbuf_len = 0;
+ return -1;
+ }
+
+ memcpy(recvbuf, buf, len);
+ *rbuf_len = len;
+
+ return 0;
+}
#define CONFIG_INTEL_CORE_ARCH /* Sandy bridge and ivy bridge chipsets. */
#define CONFIG_ZBOOT_32
#define CONFIG_PHYSMEM
+#define CONFIG_SYS_EARLY_PCI_INIT
#define CONFIG_LMB
#define CONFIG_OF_LIBFDT
#define EXYNOS_USB_SECONDARY_BOOT 0xfeed0002
#define EXYNOS_IRAM_SECONDARY_BASE 0x02020018
+/* TPM */
+#define CONFIG_TPM
+#define CONFIG_CMD_TPM
+#define CONFIG_INFINEON_TPM_I2C
+#define CONFIG_INFINEON_TPM_I2C_BUS 3
+#define CONFIG_INFINEON_TPM_I2C_ADDR 0x20
+
/* MMC SPL */
#define CONFIG_SPL
#define COPY_BL2_FNPTR_ADDR 0x02020030
COMPAT_MAXIM_MAX77686_PMIC, /* MAX77686 PMIC */
COMPAT_GENERIC_SPI_FLASH, /* Generic SPI Flash chip */
COMPAT_MAXIM_98095_CODEC, /* MAX98095 Codec */
+ COMPAT_INFINEON_SLB9635_TPM, /* Infineon SLB9635 TPM */
COMPAT_COUNT,
};
#include <linux/compiler.h>
#define SD_VERSION_SD 0x20000
-#define SD_VERSION_2 (SD_VERSION_SD | 0x20)
-#define SD_VERSION_1_0 (SD_VERSION_SD | 0x10)
-#define SD_VERSION_1_10 (SD_VERSION_SD | 0x1a)
+#define SD_VERSION_3 (SD_VERSION_SD | 0x300)
+#define SD_VERSION_2 (SD_VERSION_SD | 0x200)
+#define SD_VERSION_1_0 (SD_VERSION_SD | 0x100)
+#define SD_VERSION_1_10 (SD_VERSION_SD | 0x10a)
#define MMC_VERSION_MMC 0x10000
#define MMC_VERSION_UNKNOWN (MMC_VERSION_MMC)
-#define MMC_VERSION_1_2 (MMC_VERSION_MMC | 0x12)
-#define MMC_VERSION_1_4 (MMC_VERSION_MMC | 0x14)
-#define MMC_VERSION_2_2 (MMC_VERSION_MMC | 0x22)
-#define MMC_VERSION_3 (MMC_VERSION_MMC | 0x30)
-#define MMC_VERSION_4 (MMC_VERSION_MMC | 0x40)
+#define MMC_VERSION_1_2 (MMC_VERSION_MMC | 0x102)
+#define MMC_VERSION_1_4 (MMC_VERSION_MMC | 0x104)
+#define MMC_VERSION_2_2 (MMC_VERSION_MMC | 0x202)
+#define MMC_VERSION_3 (MMC_VERSION_MMC | 0x300)
+#define MMC_VERSION_4 (MMC_VERSION_MMC | 0x400)
+#define MMC_VERSION_4_1 (MMC_VERSION_MMC | 0x401)
+#define MMC_VERSION_4_2 (MMC_VERSION_MMC | 0x402)
+#define MMC_VERSION_4_3 (MMC_VERSION_MMC | 0x403)
+#define MMC_VERSION_4_41 (MMC_VERSION_MMC | 0x429)
+#define MMC_VERSION_4_5 (MMC_VERSION_MMC | 0x405)
#define MMC_MODE_HS 0x001
#define MMC_MODE_HS_52MHz 0x010
#define FLASH_CONTINUATION_CODE 0x7F
#define FLASH_OFFSET_MANUFACTURER_ID 0x00
-#define FLASH_OFFSET_DEVICE_ID 0x02
-#define FLASH_OFFSET_DEVICE_ID2 0x1C
-#define FLASH_OFFSET_DEVICE_ID3 0x1E
-#define FLASH_OFFSET_CFI 0xAA
-
+#define FLASH_OFFSET_DEVICE_ID 0x01
+#define FLASH_OFFSET_DEVICE_ID2 0x0E
+#define FLASH_OFFSET_DEVICE_ID3 0x0F
+#define FLASH_OFFSET_CFI 0x55
#define FLASH_OFFSET_CFI_ALT 0x555
-#define FLASH_OFFSET_CFI_RESP 0x20
-#define FLASH_OFFSET_PRIMARY_VENDOR 0x26
+#define FLASH_OFFSET_CFI_RESP 0x10
+#define FLASH_OFFSET_PRIMARY_VENDOR 0x13
/* extended query table primary address */
-#define FLASH_OFFSET_EXT_QUERY_T_P_ADDR 0x2A
+#define FLASH_OFFSET_EXT_QUERY_T_P_ADDR 0x15
#define FLASH_OFFSET_WTOUT 0x1F
-#define FLASH_OFFSET_WBTOUT 0x40
-#define FLASH_OFFSET_ETOUT 0x4A
-#define FLASH_OFFSET_CETOUT 0x44
-#define FLASH_OFFSET_WMAX_TOUT 0x46
-#define FLASH_OFFSET_WBMAX_TOUT 0x48
-#define FLASH_OFFSET_EMAX_TOUT 0x4A
-#define FLASH_OFFSET_CEMAX_TOUT 0x4C
-#define FLASH_OFFSET_SIZE 0x4E
-#define FLASH_OFFSET_INTERFACE 0x50
-#define FLASH_OFFSET_BUFFER_SIZE 0x54
-#define FLASH_OFFSET_NUM_ERASE_REGIONS 0x58
-#define FLASH_OFFSET_ERASE_REGIONS 0x5A
-#define FLASH_OFFSET_PROTECT 0x04
+#define FLASH_OFFSET_WBTOUT 0x20
+#define FLASH_OFFSET_ETOUT 0x21
+#define FLASH_OFFSET_CETOUT 0x22
+#define FLASH_OFFSET_WMAX_TOUT 0x23
+#define FLASH_OFFSET_WBMAX_TOUT 0x24
+#define FLASH_OFFSET_EMAX_TOUT 0x25
+#define FLASH_OFFSET_CEMAX_TOUT 0x26
+#define FLASH_OFFSET_SIZE 0x27
+#define FLASH_OFFSET_INTERFACE 0x28
+#define FLASH_OFFSET_BUFFER_SIZE 0x2A
+#define FLASH_OFFSET_NUM_ERASE_REGIONS 0x2C
+#define FLASH_OFFSET_ERASE_REGIONS 0x2D
+#define FLASH_OFFSET_PROTECT 0x02
#define FLASH_OFFSET_USER_PROTECTION 0x85
#define FLASH_OFFSET_INTEL_PROTECTION 0x81
--- /dev/null
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __TIS_H
+#define __TIS_H
+
+#include <common.h>
+
+/* Low-level interface to access TPM */
+
+/*
+ * tis_init()
+ *
+ * Initialize the TPM device. Returns 0 on success or -1 on
+ * failure (in case device probing did not succeed).
+ */
+int tis_init(void);
+
+/*
+ * tis_open()
+ *
+ * Requests access to locality 0 for the caller. After all commands have been
+ * completed the caller is supposed to call tis_close().
+ *
+ * Returns 0 on success, -1 on failure.
+ */
+int tis_open(void);
+
+/*
+ * tis_close()
+ *
+ * terminate the currect session with the TPM by releasing the locked
+ * locality. Returns 0 on success of -1 on failure (in case lock
+ * removal did not succeed).
+ */
+int tis_close(void);
+
+/*
+ * tis_sendrecv()
+ *
+ * Send the requested data to the TPM and then try to get its response
+ *
+ * @sendbuf - buffer of the data to send
+ * @send_size size of the data to send
+ * @recvbuf - memory to save the response to
+ * @recv_len - pointer to the size of the response buffer
+ *
+ * Returns 0 on success (and places the number of response bytes at recv_len)
+ * or -1 on failure.
+ */
+int tis_sendrecv(const uint8_t *sendbuf, size_t send_size, uint8_t *recvbuf,
+ size_t *recv_len);
+
+#endif /* __TIS_H */
/*
- * Copyright (c) 2011 The Chromium OS Authors.
+ * Copyright (c) 2013 The Chromium OS Authors.
*
* See file CREDITS for list of people who contributed to this
* project.
* MA 02111-1307 USA
*/
-#ifndef _INCLUDE_TPM_H_
-#define _INCLUDE_TPM_H_
+#ifndef __TPM_H
+#define __TPM_H
-#include <common.h>
+#include <tis.h>
/*
- * tis_init()
+ * Here is a partial implementation of TPM commands. Please consult TCG Main
+ * Specification for definitions of TPM commands.
+ */
+
+enum tpm_startup_type {
+ TPM_ST_CLEAR = 0x0001,
+ TPM_ST_STATE = 0x0002,
+ TPM_ST_DEACTIVATED = 0x0003,
+};
+
+enum tpm_physical_presence {
+ TPM_PHYSICAL_PRESENCE_HW_DISABLE = 0x0200,
+ TPM_PHYSICAL_PRESENCE_CMD_DISABLE = 0x0100,
+ TPM_PHYSICAL_PRESENCE_LIFETIME_LOCK = 0x0080,
+ TPM_PHYSICAL_PRESENCE_HW_ENABLE = 0x0040,
+ TPM_PHYSICAL_PRESENCE_CMD_ENABLE = 0x0020,
+ TPM_PHYSICAL_PRESENCE_NOTPRESENT = 0x0010,
+ TPM_PHYSICAL_PRESENCE_PRESENT = 0x0008,
+ TPM_PHYSICAL_PRESENCE_LOCK = 0x0004,
+};
+
+enum tpm_nv_index {
+ TPM_NV_INDEX_LOCK = 0xffffffff,
+ TPM_NV_INDEX_0 = 0x00000000,
+ TPM_NV_INDEX_DIR = 0x10000001,
+};
+
+/**
+ * Initialize TPM device. It must be called before any TPM commands.
*
- * Initialize the TPM device. Returns 0 on success or -1 on
- * failure (in case device probing did not succeed).
+ * @return 0 on success, non-0 on error.
*/
-int tis_init(void);
+uint32_t tpm_init(void);
-/*
- * tis_open()
+/**
+ * Issue a TPM_Startup command.
*
- * Requests access to locality 0 for the caller. After all commands have been
- * completed the caller is supposed to call tis_close().
+ * @param mode TPM startup mode
+ * @return return code of the operation
+ */
+uint32_t tpm_startup(enum tpm_startup_type mode);
+
+/**
+ * Issue a TPM_SelfTestFull command.
*
- * Returns 0 on success, -1 on failure.
+ * @return return code of the operation
*/
-int tis_open(void);
+uint32_t tpm_self_test_full(void);
-/*
- * tis_close()
+/**
+ * Issue a TPM_ContinueSelfTest command.
*
- * terminate the currect session with the TPM by releasing the locked
- * locality. Returns 0 on success of -1 on failure (in case lock
- * removal did not succeed).
+ * @return return code of the operation
*/
-int tis_close(void);
+uint32_t tpm_continue_self_test(void);
-/*
- * tis_sendrecv()
+/**
+ * Issue a TPM_NV_DefineSpace command. The implementation is limited
+ * to specify TPM_NV_ATTRIBUTES and size of the area. The area index
+ * could be one of the special value listed in enum tpm_nv_index.
*
- * Send the requested data to the TPM and then try to get its response
+ * @param index index of the area
+ * @param perm TPM_NV_ATTRIBUTES of the area
+ * @param size size of the area
+ * @return return code of the operation
+ */
+uint32_t tpm_nv_define_space(uint32_t index, uint32_t perm, uint32_t size);
+
+/**
+ * Issue a TPM_NV_ReadValue command. This implementation is limited
+ * to read the area from offset 0. The area index could be one of
+ * the special value listed in enum tpm_nv_index.
+ *
+ * @param index index of the area
+ * @param data output buffer of the area contents
+ * @param count size of output buffer
+ * @return return code of the operation
+ */
+uint32_t tpm_nv_read_value(uint32_t index, void *data, uint32_t count);
+
+/**
+ * Issue a TPM_NV_WriteValue command. This implementation is limited
+ * to write the area from offset 0. The area index could be one of
+ * the special value listed in enum tpm_nv_index.
+ *
+ * @param index index of the area
+ * @param data input buffer to be wrote to the area
+ * @param length length of data bytes of input buffer
+ * @return return code of the operation
+ */
+uint32_t tpm_nv_write_value(uint32_t index, const void *data, uint32_t length);
+
+/**
+ * Issue a TPM_Extend command.
+ *
+ * @param index index of the PCR
+ * @param in_digest 160-bit value representing the event to be
+ * recorded
+ * @param out_digest 160-bit PCR value after execution of the
+ * command
+ * @return return code of the operation
+ */
+uint32_t tpm_extend(uint32_t index, const void *in_digest, void *out_digest);
+
+/**
+ * Issue a TPM_PCRRead command.
*
- * @sendbuf - buffer of the data to send
- * @send_size size of the data to send
- * @recvbuf - memory to save the response to
- * @recv_len - pointer to the size of the response buffer
+ * @param index index of the PCR
+ * @param data output buffer for contents of the named PCR
+ * @param count size of output buffer
+ * @return return code of the operation
+ */
+uint32_t tpm_pcr_read(uint32_t index, void *data, size_t count);
+
+/**
+ * Issue a TSC_PhysicalPresence command. TPM physical presence flag
+ * is bit-wise OR'ed of flags listed in enum tpm_physical_presence.
+ *
+ * @param presence TPM physical presence flag
+ * @return return code of the operation
+ */
+uint32_t tpm_tsc_physical_presence(uint16_t presence);
+
+/**
+ * Issue a TPM_ReadPubek command.
+ *
+ * @param data output buffer for the public endorsement key
+ * @param count size of ouput buffer
+ * @return return code of the operation
+ */
+uint32_t tpm_read_pubek(void *data, size_t count);
+
+/**
+ * Issue a TPM_ForceClear command.
+ *
+ * @return return code of the operation
+ */
+uint32_t tpm_force_clear(void);
+
+/**
+ * Issue a TPM_PhysicalEnable command.
+ *
+ * @return return code of the operation
+ */
+uint32_t tpm_physical_enable(void);
+
+/**
+ * Issue a TPM_PhysicalDisable command.
+ *
+ * @return return code of the operation
+ */
+uint32_t tpm_physical_disable(void);
+
+/**
+ * Issue a TPM_PhysicalSetDeactivated command.
+ *
+ * @param state boolean state of the deactivated flag
+ * @return return code of the operation
+ */
+uint32_t tpm_physical_set_deactivated(uint8_t state);
+
+/**
+ * Issue a TPM_GetCapability command. This implementation is limited
+ * to query sub_cap index that is 4-byte wide.
*
- * Returns 0 on success (and places the number of response bytes at recv_len)
- * or -1 on failure.
+ * @param cap_area partition of capabilities
+ * @param sub_cap further definition of capability, which is
+ * limited to be 4-byte wide
+ * @param cap output buffer for capability information
+ * @param count size of ouput buffer
+ * @return return code of the operation
*/
-int tis_sendrecv(const uint8_t *sendbuf, size_t send_size, uint8_t *recvbuf,
- size_t *recv_len);
+uint32_t tpm_get_capability(uint32_t cap_area, uint32_t sub_cap,
+ void *cap, size_t count);
-#endif /* _INCLUDE_TPM_H_ */
+#endif /* __TPM_H */
COBJS-$(CONFIG_SHA1) += sha1.o
COBJS-$(CONFIG_SHA256) += sha256.o
COBJS-y += strmhz.o
+COBJS-$(CONFIG_TPM) += tpm.o
COBJS-$(CONFIG_RBTREE) += rbtree.o
endif
COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686_pmic"),
COMPAT(GENERIC_SPI_FLASH, "spi-flash"),
COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"),
+ COMPAT(INFINEON_SLB9635_TPM, "infineon,slb9635-tpm"),
};
const char *fdtdec_get_compatible(enum fdt_compat_id id)
--- /dev/null
+/*
+ * Copyright (c) 2013 The Chromium OS Authors.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <stdarg.h>
+#include <tpm.h>
+#include <asm/unaligned.h>
+
+/* Internal error of TPM command library */
+#define TPM_LIB_ERROR ((uint32_t)~0u)
+
+/* Useful constants */
+enum {
+ COMMAND_BUFFER_SIZE = 256,
+ TPM_PUBEK_SIZE = 256,
+ TPM_REQUEST_HEADER_LENGTH = 10,
+ TPM_RESPONSE_HEADER_LENGTH = 10,
+ PCR_DIGEST_LENGTH = 20,
+};
+
+/**
+ * Pack data into a byte string. The data types are specified in
+ * the format string: 'b' means unsigned byte, 'w' unsigned word,
+ * 'd' unsigned double word, and 's' byte string. The data are a
+ * series of offsets and values (for type byte string there are also
+ * lengths). The data values are packed into the byte string
+ * sequentially, and so a latter value could over-write a former
+ * value.
+ *
+ * @param str output string
+ * @param size size of output string
+ * @param format format string
+ * @param ... data points
+ * @return 0 on success, non-0 on error
+ */
+int pack_byte_string(uint8_t *str, size_t size, const char *format, ...)
+{
+ va_list args;
+ size_t offset = 0, length = 0;
+ uint8_t *data = NULL;
+ uint32_t value = 0;
+
+ va_start(args, format);
+ for (; *format; format++) {
+ switch (*format) {
+ case 'b':
+ offset = va_arg(args, size_t);
+ value = va_arg(args, int);
+ length = 1;
+ break;
+ case 'w':
+ offset = va_arg(args, size_t);
+ value = va_arg(args, int);
+ length = 2;
+ break;
+ case 'd':
+ offset = va_arg(args, size_t);
+ value = va_arg(args, uint32_t);
+ length = 4;
+ break;
+ case 's':
+ offset = va_arg(args, size_t);
+ data = va_arg(args, uint8_t *);
+ length = va_arg(args, uint32_t);
+ break;
+ default:
+ debug("Couldn't recognize format string\n");
+ return -1;
+ }
+
+ if (offset + length > size)
+ return -1;
+
+ switch (*format) {
+ case 'b':
+ str[offset] = value;
+ break;
+ case 'w':
+ put_unaligned_be16(value, str + offset);
+ break;
+ case 'd':
+ put_unaligned_be32(value, str + offset);
+ break;
+ case 's':
+ memcpy(str + offset, data, length);
+ break;
+ }
+ }
+ va_end(args);
+
+ return 0;
+}
+
+/**
+ * Unpack data from a byte string. The data types are specified in
+ * the format string: 'b' means unsigned byte, 'w' unsigned word,
+ * 'd' unsigned double word, and 's' byte string. The data are a
+ * series of offsets and pointers (for type byte string there are also
+ * lengths).
+ *
+ * @param str output string
+ * @param size size of output string
+ * @param format format string
+ * @param ... data points
+ * @return 0 on success, non-0 on error
+ */
+int unpack_byte_string(const uint8_t *str, size_t size, const char *format, ...)
+{
+ va_list args;
+ size_t offset = 0, length = 0;
+ uint8_t *ptr8 = NULL;
+ uint16_t *ptr16 = NULL;
+ uint32_t *ptr32 = NULL;
+
+ va_start(args, format);
+ for (; *format; format++) {
+ switch (*format) {
+ case 'b':
+ offset = va_arg(args, size_t);
+ ptr8 = va_arg(args, uint8_t *);
+ length = 1;
+ break;
+ case 'w':
+ offset = va_arg(args, size_t);
+ ptr16 = va_arg(args, uint16_t *);
+ length = 2;
+ break;
+ case 'd':
+ offset = va_arg(args, size_t);
+ ptr32 = va_arg(args, uint32_t *);
+ length = 4;
+ break;
+ case 's':
+ offset = va_arg(args, size_t);
+ ptr8 = va_arg(args, uint8_t *);
+ length = va_arg(args, uint32_t);
+ break;
+ default:
+ debug("Couldn't recognize format string\n");
+ return -1;
+ }
+
+ if (offset + length > size)
+ return -1;
+
+ switch (*format) {
+ case 'b':
+ *ptr8 = str[offset];
+ break;
+ case 'w':
+ *ptr16 = get_unaligned_be16(str + offset);
+ break;
+ case 'd':
+ *ptr32 = get_unaligned_be32(str + offset);
+ break;
+ case 's':
+ memcpy(ptr8, str + offset, length);
+ break;
+ }
+ }
+ va_end(args);
+
+ return 0;
+}
+
+/**
+ * Get TPM command size.
+ *
+ * @param command byte string of TPM command
+ * @return command size of the TPM command
+ */
+static uint32_t tpm_command_size(const void *command)
+{
+ const size_t command_size_offset = 2;
+ return get_unaligned_be32(command + command_size_offset);
+}
+
+/**
+ * Get TPM response return code, which is one of TPM_RESULT values.
+ *
+ * @param response byte string of TPM response
+ * @return return code of the TPM response
+ */
+static uint32_t tpm_return_code(const void *response)
+{
+ const size_t return_code_offset = 6;
+ return get_unaligned_be32(response + return_code_offset);
+}
+
+/**
+ * Send a TPM command and return response's return code, and optionally
+ * return response to caller.
+ *
+ * @param command byte string of TPM command
+ * @param response output buffer for TPM response, or NULL if the
+ * caller does not care about it
+ * @param size_ptr output buffer size (input parameter) and TPM
+ * response length (output parameter); this parameter
+ * is a bidirectional
+ * @return return code of the TPM response
+ */
+static uint32_t tpm_sendrecv_command(const void *command,
+ void *response, size_t *size_ptr)
+{
+ uint8_t response_buffer[COMMAND_BUFFER_SIZE];
+ size_t response_length;
+ uint32_t err;
+
+ if (response) {
+ response_length = *size_ptr;
+ } else {
+ response = response_buffer;
+ response_length = sizeof(response_buffer);
+ }
+ err = tis_sendrecv(command, tpm_command_size(command),
+ response, &response_length);
+ if (err)
+ return TPM_LIB_ERROR;
+ if (response)
+ *size_ptr = response_length;
+
+ return tpm_return_code(response);
+}
+
+uint32_t tpm_init(void)
+{
+ uint32_t err;
+
+ err = tis_init();
+ if (err)
+ return err;
+
+ return tis_open();
+}
+
+uint32_t tpm_startup(enum tpm_startup_type mode)
+{
+ const uint8_t command[12] = {
+ 0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x0,
+ };
+ const size_t mode_offset = 10;
+ uint8_t buf[COMMAND_BUFFER_SIZE];
+
+ if (pack_byte_string(buf, sizeof(buf), "sw",
+ 0, command, sizeof(command),
+ mode_offset, mode))
+ return TPM_LIB_ERROR;
+
+ return tpm_sendrecv_command(buf, NULL, NULL);
+}
+
+uint32_t tpm_self_test_full(void)
+{
+ const uint8_t command[10] = {
+ 0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x50,
+ };
+ return tpm_sendrecv_command(command, NULL, NULL);
+}
+
+uint32_t tpm_continue_self_test(void)
+{
+ const uint8_t command[10] = {
+ 0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x53,
+ };
+ return tpm_sendrecv_command(command, NULL, NULL);
+}
+
+uint32_t tpm_nv_define_space(uint32_t index, uint32_t perm, uint32_t size)
+{
+ const uint8_t command[101] = {
+ 0x0, 0xc1, /* TPM_TAG */
+ 0x0, 0x0, 0x0, 0x65, /* parameter size */
+ 0x0, 0x0, 0x0, 0xcc, /* TPM_COMMAND_CODE */
+ /* TPM_NV_DATA_PUBLIC->... */
+ 0x0, 0x18, /* ...->TPM_STRUCTURE_TAG */
+ 0, 0, 0, 0, /* ...->TPM_NV_INDEX */
+ /* TPM_NV_DATA_PUBLIC->TPM_PCR_INFO_SHORT */
+ 0x0, 0x3,
+ 0, 0, 0,
+ 0x1f,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ /* TPM_NV_DATA_PUBLIC->TPM_PCR_INFO_SHORT */
+ 0x0, 0x3,
+ 0, 0, 0,
+ 0x1f,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ /* TPM_NV_ATTRIBUTES->... */
+ 0x0, 0x17, /* ...->TPM_STRUCTURE_TAG */
+ 0, 0, 0, 0, /* ...->attributes */
+ /* End of TPM_NV_ATTRIBUTES */
+ 0, /* bReadSTClear */
+ 0, /* bWriteSTClear */
+ 0, /* bWriteDefine */
+ 0, 0, 0, 0, /* size */
+ };
+ const size_t index_offset = 12;
+ const size_t perm_offset = 70;
+ const size_t size_offset = 77;
+ uint8_t buf[COMMAND_BUFFER_SIZE];
+
+ if (pack_byte_string(buf, sizeof(buf), "sddd",
+ 0, command, sizeof(command),
+ index_offset, index,
+ perm_offset, perm,
+ size_offset, size))
+ return TPM_LIB_ERROR;
+
+ return tpm_sendrecv_command(buf, NULL, NULL);
+}
+
+uint32_t tpm_nv_read_value(uint32_t index, void *data, uint32_t count)
+{
+ const uint8_t command[22] = {
+ 0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0xcf,
+ };
+ const size_t index_offset = 10;
+ const size_t length_offset = 18;
+ const size_t data_size_offset = 10;
+ const size_t data_offset = 14;
+ uint8_t buf[COMMAND_BUFFER_SIZE], response[COMMAND_BUFFER_SIZE];
+ size_t response_length = sizeof(response);
+ uint32_t data_size;
+ uint32_t err;
+
+ if (pack_byte_string(buf, sizeof(buf), "sdd",
+ 0, command, sizeof(command),
+ index_offset, index,
+ length_offset, count))
+ return TPM_LIB_ERROR;
+ err = tpm_sendrecv_command(buf, response, &response_length);
+ if (err)
+ return err;
+ if (unpack_byte_string(response, response_length, "d",
+ data_size_offset, &data_size))
+ return TPM_LIB_ERROR;
+ if (data_size > count)
+ return TPM_LIB_ERROR;
+ if (unpack_byte_string(response, response_length, "s",
+ data_offset, data, data_size))
+ return TPM_LIB_ERROR;
+
+ return 0;
+}
+
+uint32_t tpm_nv_write_value(uint32_t index, const void *data, uint32_t length)
+{
+ const uint8_t command[256] = {
+ 0x0, 0xc1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xcd,
+ };
+ const size_t command_size_offset = 2;
+ const size_t index_offset = 10;
+ const size_t length_offset = 18;
+ const size_t data_offset = 22;
+ const size_t write_info_size = 12;
+ const uint32_t total_length =
+ TPM_REQUEST_HEADER_LENGTH + write_info_size + length;
+ uint8_t buf[COMMAND_BUFFER_SIZE], response[COMMAND_BUFFER_SIZE];
+ size_t response_length = sizeof(response);
+ uint32_t err;
+
+ if (pack_byte_string(buf, sizeof(buf), "sddds",
+ 0, command, sizeof(command),
+ command_size_offset, total_length,
+ index_offset, index,
+ length_offset, length,
+ data_offset, data, length))
+ return TPM_LIB_ERROR;
+ err = tpm_sendrecv_command(buf, response, &response_length);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+uint32_t tpm_extend(uint32_t index, const void *in_digest, void *out_digest)
+{
+ const uint8_t command[34] = {
+ 0x0, 0xc1, 0x0, 0x0, 0x0, 0x22, 0x0, 0x0, 0x0, 0x14,
+ };
+ const size_t index_offset = 10;
+ const size_t in_digest_offset = 14;
+ const size_t out_digest_offset = 10;
+ uint8_t buf[COMMAND_BUFFER_SIZE];
+ uint8_t response[TPM_RESPONSE_HEADER_LENGTH + PCR_DIGEST_LENGTH];
+ size_t response_length = sizeof(response);
+ uint32_t err;
+
+ if (pack_byte_string(buf, sizeof(buf), "sds",
+ 0, command, sizeof(command),
+ index_offset, index,
+ in_digest_offset, in_digest,
+ PCR_DIGEST_LENGTH))
+ return TPM_LIB_ERROR;
+ err = tpm_sendrecv_command(buf, response, &response_length);
+ if (err)
+ return err;
+
+ if (unpack_byte_string(response, response_length, "s",
+ out_digest_offset, out_digest,
+ PCR_DIGEST_LENGTH))
+ return TPM_LIB_ERROR;
+
+ return 0;
+}
+
+uint32_t tpm_pcr_read(uint32_t index, void *data, size_t count)
+{
+ const uint8_t command[14] = {
+ 0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x15,
+ };
+ const size_t index_offset = 10;
+ const size_t out_digest_offset = 10;
+ uint8_t buf[COMMAND_BUFFER_SIZE], response[COMMAND_BUFFER_SIZE];
+ size_t response_length = sizeof(response);
+ uint32_t err;
+
+ if (count < PCR_DIGEST_LENGTH)
+ return TPM_LIB_ERROR;
+
+ if (pack_byte_string(buf, sizeof(buf), "sd",
+ 0, command, sizeof(command),
+ index_offset, index))
+ return TPM_LIB_ERROR;
+ err = tpm_sendrecv_command(buf, response, &response_length);
+ if (err)
+ return err;
+ if (unpack_byte_string(response, response_length, "s",
+ out_digest_offset, data, PCR_DIGEST_LENGTH))
+ return TPM_LIB_ERROR;
+
+ return 0;
+}
+
+uint32_t tpm_tsc_physical_presence(uint16_t presence)
+{
+ const uint8_t command[12] = {
+ 0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x0,
+ };
+ const size_t presence_offset = 10;
+ uint8_t buf[COMMAND_BUFFER_SIZE];
+
+ if (pack_byte_string(buf, sizeof(buf), "sw",
+ 0, command, sizeof(command),
+ presence_offset, presence))
+ return TPM_LIB_ERROR;
+
+ return tpm_sendrecv_command(buf, NULL, NULL);
+}
+
+uint32_t tpm_read_pubek(void *data, size_t count)
+{
+ const uint8_t command[30] = {
+ 0x0, 0xc1, 0x0, 0x0, 0x0, 0x1e, 0x0, 0x0, 0x0, 0x7c,
+ };
+ const size_t response_size_offset = 2;
+ const size_t data_offset = 10;
+ const size_t header_and_checksum_size = TPM_RESPONSE_HEADER_LENGTH + 20;
+ uint8_t response[COMMAND_BUFFER_SIZE + TPM_PUBEK_SIZE];
+ size_t response_length = sizeof(response);
+ uint32_t data_size;
+ uint32_t err;
+
+ err = tpm_sendrecv_command(command, response, &response_length);
+ if (err)
+ return err;
+ if (unpack_byte_string(response, response_length, "d",
+ response_size_offset, &data_size))
+ return TPM_LIB_ERROR;
+ if (data_size < header_and_checksum_size)
+ return TPM_LIB_ERROR;
+ data_size -= header_and_checksum_size;
+ if (data_size > count)
+ return TPM_LIB_ERROR;
+ if (unpack_byte_string(response, response_length, "s",
+ data_offset, data, data_size))
+ return TPM_LIB_ERROR;
+
+ return 0;
+}
+
+uint32_t tpm_force_clear(void)
+{
+ const uint8_t command[10] = {
+ 0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x5d,
+ };
+
+ return tpm_sendrecv_command(command, NULL, NULL);
+}
+
+uint32_t tpm_physical_enable(void)
+{
+ const uint8_t command[10] = {
+ 0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x6f,
+ };
+
+ return tpm_sendrecv_command(command, NULL, NULL);
+}
+
+uint32_t tpm_physical_disable(void)
+{
+ const uint8_t command[10] = {
+ 0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x70,
+ };
+
+ return tpm_sendrecv_command(command, NULL, NULL);
+}
+
+uint32_t tpm_physical_set_deactivated(uint8_t state)
+{
+ const uint8_t command[11] = {
+ 0x0, 0xc1, 0x0, 0x0, 0x0, 0xb, 0x0, 0x0, 0x0, 0x72,
+ };
+ const size_t state_offset = 10;
+ uint8_t buf[COMMAND_BUFFER_SIZE];
+
+ if (pack_byte_string(buf, sizeof(buf), "sb",
+ 0, command, sizeof(command),
+ state_offset, state))
+ return TPM_LIB_ERROR;
+
+ return tpm_sendrecv_command(buf, NULL, NULL);
+}
+
+uint32_t tpm_get_capability(uint32_t cap_area, uint32_t sub_cap,
+ void *cap, size_t count)
+{
+ const uint8_t command[22] = {
+ 0x0, 0xc1, /* TPM_TAG */
+ 0x0, 0x0, 0x0, 0x16, /* parameter size */
+ 0x0, 0x0, 0x0, 0x65, /* TPM_COMMAND_CODE */
+ 0x0, 0x0, 0x0, 0x0, /* TPM_CAPABILITY_AREA */
+ 0x0, 0x0, 0x0, 0x4, /* subcap size */
+ 0x0, 0x0, 0x0, 0x0, /* subcap value */
+ };
+ const size_t cap_area_offset = 10;
+ const size_t sub_cap_offset = 18;
+ const size_t cap_offset = 14;
+ const size_t cap_size_offset = 10;
+ uint8_t buf[COMMAND_BUFFER_SIZE], response[COMMAND_BUFFER_SIZE];
+ size_t response_length = sizeof(response);
+ uint32_t cap_size;
+ uint32_t err;
+
+ if (pack_byte_string(buf, sizeof(buf), "sdd",
+ 0, command, sizeof(command),
+ cap_area_offset, cap_area,
+ sub_cap_offset, sub_cap))
+ return TPM_LIB_ERROR;
+ err = tpm_sendrecv_command(buf, response, &response_length);
+ if (err)
+ return err;
+ if (unpack_byte_string(response, response_length, "d",
+ cap_size_offset, &cap_size))
+ return TPM_LIB_ERROR;
+ if (cap_size > response_length || cap_size > count)
+ return TPM_LIB_ERROR;
+ if (unpack_byte_string(response, response_length, "s",
+ cap_offset, cap, cap_size))
+ return TPM_LIB_ERROR;
+
+ return 0;
+}
# Use native tools and options
# Define __KERNEL_STRICT_NAMES to prevent typedef overlaps
#
-HOSTCPPFLAGS = -idirafter $(SRCTREE)/include \
+HOSTCPPFLAGS = -include $(SRCTREE)/include/libfdt_env.h \
+ -idirafter $(SRCTREE)/include \
-idirafter $(OBJTREE)/include2 \
-idirafter $(OBJTREE)/include \
-I $(SRCTREE)/lib/libfdt \
projects / karo-tx-uboot.git / commitdiff