*
* 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
+ * SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
DECLARE_GLOBAL_DATA_PTR;
-/* Address of the TPM on the I2C bus */
-#define TPM_I2C_ADDR 0x20
-
/* Max buffer size supported by our tpm */
#define TPM_DEV_BUFSIZE 1260
#define TPM_HEADER_SIZE 10
-/*
- * Expected value for DIDVID register
- *
- * The only device the system knows about at this moment is Infineon slb9635.
- */
-#define TPM_TIS_I2C_DID_VID 0x000b15d1L
-
enum tis_access {
TPM_ACCESS_VALID = 0x80,
TPM_ACCESS_ACTIVE_LOCALITY = 0x20,
/* Structure to store I2C TPM specific stuff */
struct tpm_dev {
-#ifdef CONFIG_DM_I2C
struct udevice *dev;
-#else
- uint addr;
-#endif
u8 buf[TPM_DEV_BUFSIZE + sizeof(u8)]; /* Max buffer size + addr */
enum i2c_chip_type chip_type;
};
-static struct tpm_dev tpm_dev = {
-#ifndef CONFIG_DM_I2C
- .addr = TPM_I2C_ADDR
-#endif
-};
-
static struct tpm_dev tpm_dev;
/*
if ((tpm_dev.chip_type == SLB9635) || (tpm_dev.chip_type == UNKNOWN)) {
/* slb9635 protocol should work in both cases */
for (count = 0; count < MAX_COUNT; count++) {
-#ifdef CONFIG_DM_I2C
rc = dm_i2c_write(tpm_dev.dev, 0, (uchar *)&addrbuf, 1);
-#else
- rc = i2c_write(tpm_dev.addr, 0, 0,
- (uchar *)&addrbuf, 1);
-#endif
if (rc == 0)
break; /* Success, break to skip sleep */
udelay(SLEEP_DURATION);
*/
for (count = 0; count < MAX_COUNT; count++) {
udelay(SLEEP_DURATION);
-#ifdef CONFIG_DM_I2C
rc = dm_i2c_read(tpm_dev.dev, 0, buffer, len);
-#else
- rc = i2c_read(tpm_dev.addr, 0, 0, buffer, len);
-#endif
if (rc == 0)
break; /* success, break to skip sleep */
}
* be safe on the safe side.
*/
for (count = 0; count < MAX_COUNT; count++) {
-#ifdef CONFIG_DM_I2C
rc = dm_i2c_read(tpm_dev.dev, addr, buffer, len);
-#else
- rc = i2c_read(tpm_dev.addr, addr, 1, buffer, len);
-#endif
if (rc == 0)
break; /* break here to skip sleep */
udelay(SLEEP_DURATION);
int rc = 0;
int count;
- /* Prepare send buffer */
-#ifndef CONFIG_DM_I2C
- tpm_dev.buf[0] = addr;
- memcpy(&(tpm_dev.buf[1]), buffer, len);
- buffer = tpm_dev.buf;
- len++;
-#endif
-
for (count = 0; count < max_count; count++) {
-#ifdef CONFIG_DM_I2C
rc = dm_i2c_write(tpm_dev.dev, addr, buffer, len);
-#else
- rc = i2c_write(tpm_dev.addr, 0, 0, buffer, len);
-#endif
if (rc == 0)
break; /* Success, break to skip sleep */
udelay(sleep_time);
return UNKNOWN;
}
-static int tpm_vendor_init_common(void)
+int tpm_vendor_init(struct udevice *dev)
{
struct tpm_chip *chip;
u32 vendor;
u32 expected_did_vid;
+ tpm_dev.dev = dev;
tpm_dev.chip_type = tpm_vendor_chip_type();
chip = tpm_register_hardware(&tpm_tis_i2c);
return 0;
}
-#ifdef CONFIG_DM_I2C
-/* Initialisation of i2c tpm */
-int tpm_vendor_init_dev(struct udevice *dev)
-{
- tpm_dev.dev = dev;
- return tpm_vendor_init_common();
-}
-#else
-/* Initialisation of i2c tpm */
-int tpm_vendor_init(uint32_t dev_addr)
-{
- uint old_addr;
- int rc = 0;
-
- old_addr = tpm_dev.addr;
- if (dev_addr != 0)
- tpm_dev.addr = dev_addr;
-
- rc = tpm_vendor_init_common();
- if (rc)
- tpm_dev.addr = old_addr;
-
- return rc;
-}
-#endif
-
void tpm_vendor_cleanup(struct tpm_chip *chip)
{
release_locality(chip, chip->vendor.locality, 1);