#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
+#include <libfdt.h>
#include "ifdtool.h"
#undef DEBUG
enum input_file_type_t {
IF_normal,
+ IF_fdt,
+ IF_uboot,
};
struct input_file {
if (ret)
return ret;
dump_region(i, frba);
- if (region.size == 0)
+ if (region.size <= 0)
continue;
region_fd = open(region_filename(i),
O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR |
* 0xffffffff so use an address relative to that. For an
* 8MB ROM the start address is 0xfff80000.
* @write_fname: Filename to add to the image
- * @return 0 if OK, -ve on error
+ * @return number of bytes written if OK, -ve on error
*/
static int write_data(char *image, int size, unsigned int addr,
const char *write_fname)
if (write_fd < 0)
return write_fd;
- offset = addr + size;
+ offset = (uint32_t)(addr + size);
debug("Writing %s to offset %#x\n", write_fname, offset);
if (offset < 0 || offset + write_size > size) {
close(write_fd);
+ return write_size;
+}
+
+/**
+ * write_uboot() - Write U-Boot, device tree and microcode pointer
+ *
+ * This writes U-Boot into a place in the flash, followed by its device tree.
+ * The microcode pointer is written so that U-Boot can find the microcode in
+ * the device tree very early in boot.
+ *
+ * @image: Pointer to image
+ * @size: Size of image in bytes
+ * @uboot: Input file information for u-boot.bin
+ * @fdt: Input file information for u-boot.dtb
+ * @ucode_ptr: Address in U-Boot where the microcode pointer should be placed
+ * @return 0 if OK, -ve on error
+ */
+static int write_uboot(char *image, int size, struct input_file *uboot,
+ struct input_file *fdt, unsigned int ucode_ptr)
+{
+ const void *blob;
+ const char *data;
+ int uboot_size;
+ uint32_t *ptr;
+ int data_size;
+ int offset;
+ int node;
+ int ret;
+
+ uboot_size = write_data(image, size, uboot->addr, uboot->fname);
+ if (uboot_size < 0)
+ return uboot_size;
+ fdt->addr = uboot->addr + uboot_size;
+ debug("U-Boot size %#x, FDT at %#x\n", uboot_size, fdt->addr);
+ ret = write_data(image, size, fdt->addr, fdt->fname);
+ if (ret < 0)
+ return ret;
+
+ if (ucode_ptr) {
+ blob = (void *)image + (uint32_t)(fdt->addr + size);
+ debug("DTB at %lx\n", (char *)blob - image);
+ node = fdt_node_offset_by_compatible(blob, 0,
+ "intel,microcode");
+ if (node < 0) {
+ debug("No microcode found in FDT: %s\n",
+ fdt_strerror(node));
+ return -ENOENT;
+ }
+ data = fdt_getprop(blob, node, "data", &data_size);
+ if (!data) {
+ debug("No microcode data found in FDT: %s\n",
+ fdt_strerror(data_size));
+ return -ENOENT;
+ }
+ offset = (uint32_t)(ucode_ptr + size);
+ ptr = (void *)image + offset;
+ ptr[0] = (data - image) - size;
+ ptr[1] = data_size;
+ debug("Wrote microcode pointer at %x: addr=%x, size=%x\n",
+ ucode_ptr, ptr[0], ptr[1]);
+ }
+
return 0;
}
char *desc_fname = NULL, *addr_str = NULL;
int region_type = -1, inputfreq = 0;
enum spi_frequency spifreq = SPI_FREQUENCY_20MHZ;
- struct input_file input_file[WRITE_MAX], *ifile;
+ struct input_file input_file[WRITE_MAX], *ifile, *fdt = NULL;
unsigned char wr_idx, wr_num = 0;
int rom_size = -1;
bool write_it;
char *outfile = NULL;
struct stat buf;
int size = 0;
+ unsigned int ucode_ptr = 0;
+ bool have_uboot = false;
int bios_fd;
char *image;
int ret;
{"descriptor", 1, NULL, 'D'},
{"em100", 0, NULL, 'e'},
{"extract", 0, NULL, 'x'},
+ {"fdt", 1, NULL, 'f'},
{"inject", 1, NULL, 'i'},
{"lock", 0, NULL, 'l'},
+ {"microcode", 1, NULL, 'm'},
{"romsize", 1, NULL, 'r'},
{"spifreq", 1, NULL, 's'},
{"unlock", 0, NULL, 'u'},
+ {"uboot", 1, NULL, 'U'},
{"write", 1, NULL, 'w'},
{"version", 0, NULL, 'v'},
{"help", 0, NULL, 'h'},
{0, 0, 0, 0}
};
- while ((opt = getopt_long(argc, argv, "cdD:ehi:lr:s:uvw:x?",
+ while ((opt = getopt_long(argc, argv, "cdD:ef:hi:lm:r:s:uU:vw:x?",
long_options, &option_index)) != EOF) {
switch (opt) {
case 'c':
case 'l':
mode_locked = 1;
break;
+ case 'm':
+ ucode_ptr = strtoul(optarg, NULL, 0);
+ break;
case 'r':
rom_size = strtol(optarg, NULL, 0);
debug("ROM size %d\n", rom_size);
exit(EXIT_SUCCESS);
break;
case 'w':
+ case 'U':
+ case 'f':
ifile = &input_file[wr_num];
mode_write = 1;
if (wr_num < WRITE_MAX) {
print_usage(argv[0]);
exit(EXIT_FAILURE);
}
- ifile->addr = strtol(optarg, NULL, 0);
- ifile->type = IF_normal;
+ ifile->addr = strtoll(optarg, NULL, 0);
+ ifile->type = opt == 'f' ? IF_fdt :
+ opt == 'U' ? IF_uboot : IF_normal;
+ if (ifile->type == IF_fdt)
+ fdt = ifile;
+ else if (ifile->type == IF_uboot)
+ have_uboot = true;
wr_num++;
} else {
fprintf(stderr,
exit(EXIT_FAILURE);
}
+ if (have_uboot && !fdt) {
+ fprintf(stderr,
+ "You must supply a device tree file for U-Boot\n\n");
+ print_usage(argv[0]);
+ exit(EXIT_FAILURE);
+ }
+
filename = argv[optind];
if (optind + 2 != argc)
outfile = argv[optind + 1];
if (mode_write) {
for (wr_idx = 0; wr_idx < wr_num; wr_idx++) {
ifile = &input_file[wr_idx];
- ret = write_data(image, size, ifile->addr,
+ if (ifile->type == IF_fdt) {
+ continue;
+ } else if (ifile->type == IF_uboot) {
+ ret = write_uboot(image, size, ifile, fdt,
+ ucode_ptr);
+ } else {
+ ret = write_data(image, size, ifile->addr,
ifile->fname);
- if (ret)
+ }
+ if (ret < 0)
break;
}
}
free(image);
close(bios_fd);
- return ret ? 1 : 0;
+ return ret < 0 ? 1 : 0;
}
projects / karo-tx-uboot.git / blobdiff