int last_stage_init(void)
{
#ifndef CONFIG_SPL_BUILD
ccdc_eth_init();
#endif
if (tpm_init() || tpm_startup(TPM_ST_CLEAR) ||
tpm_continue_self_test()) {
return 1;
}
mdelay(37);
flush_keys();
load_and_run_keyprog();
return 0;
}
static int do_tpm_startup(cmd_tbl_t *cmdtp, int flag,
int argc, char * const argv[])
{
enum tpm_startup_type mode;
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));
}
int tpm_get_timeouts(struct tpm_chip *chip)
{
struct tpm_cmd_t tpm_cmd;
unsigned long new_timeout[4];
unsigned long old_timeout[4];
struct duration_t *duration_cap;
ssize_t rc;
if (chip->flags & TPM_CHIP_FLAG_TPM2) {
/* Fixed timeouts for TPM2 */
chip->timeout_a = msecs_to_jiffies(TPM2_TIMEOUT_A);
chip->timeout_b = msecs_to_jiffies(TPM2_TIMEOUT_B);
chip->timeout_c = msecs_to_jiffies(TPM2_TIMEOUT_C);
chip->timeout_d = msecs_to_jiffies(TPM2_TIMEOUT_D);
chip->duration[TPM_SHORT] =
msecs_to_jiffies(TPM2_DURATION_SHORT);
chip->duration[TPM_MEDIUM] =
msecs_to_jiffies(TPM2_DURATION_MEDIUM);
chip->duration[TPM_LONG] =
msecs_to_jiffies(TPM2_DURATION_LONG);
return 0;
}
tpm_cmd.header.in = tpm_getcap_header;
tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP;
tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_TIMEOUT;
rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, 0,
NULL);
if (rc == TPM_ERR_INVALID_POSTINIT) {
/* The TPM is not started, we are the first to talk to it.
Execute a startup command. */
dev_info(&chip->dev, "Issuing TPM_STARTUP");
if (tpm_startup(chip, TPM_ST_CLEAR))
return rc;
tpm_cmd.header.in = tpm_getcap_header;
tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP;
tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_TIMEOUT;
rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE,
0, NULL);
}
if (rc) {
dev_err(&chip->dev,
"A TPM error (%zd) occurred attempting to determine the timeouts\n",
rc);
goto duration;
}
if (be32_to_cpu(tpm_cmd.header.out.return_code) != 0 ||
be32_to_cpu(tpm_cmd.header.out.length)
!= sizeof(tpm_cmd.header.out) + sizeof(u32) + 4 * sizeof(u32))
return -EINVAL;
old_timeout[0] = be32_to_cpu(tpm_cmd.params.getcap_out.cap.timeout.a);
old_timeout[1] = be32_to_cpu(tpm_cmd.params.getcap_out.cap.timeout.b);
old_timeout[2] = be32_to_cpu(tpm_cmd.params.getcap_out.cap.timeout.c);
old_timeout[3] = be32_to_cpu(tpm_cmd.params.getcap_out.cap.timeout.d);
memcpy(new_timeout, old_timeout, sizeof(new_timeout));
/*
* Provide ability for vendor overrides of timeout values in case
* of misreporting.
*/
if (chip->ops->update_timeouts != NULL)
chip->timeout_adjusted =
chip->ops->update_timeouts(chip, new_timeout);
if (!chip->timeout_adjusted) {
/* Don't overwrite default if value is 0 */
if (new_timeout[0] != 0 && new_timeout[0] < 1000) {
int i;
/* timeouts in msec rather usec */
for (i = 0; i != ARRAY_SIZE(new_timeout); i++)
new_timeout[i] *= 1000;
chip->timeout_adjusted = true;
}
}
/* Report adjusted timeouts */
if (chip->timeout_adjusted) {
dev_info(&chip->dev,
HW_ERR "Adjusting reported timeouts: A %lu->%luus B %lu->%luus C %lu->%luus D %lu->%luus\n",
old_timeout[0], new_timeout[0],
old_timeout[1], new_timeout[1],
old_timeout[2], new_timeout[2],
old_timeout[3], new_timeout[3]);
}
chip->timeout_a = usecs_to_jiffies(new_timeout[0]);
chip->timeout_b = usecs_to_jiffies(new_timeout[1]);
chip->timeout_c = usecs_to_jiffies(new_timeout[2]);
chip->timeout_d = usecs_to_jiffies(new_timeout[3]);
duration:
tpm_cmd.header.in = tpm_getcap_header;
tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP;
tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_DURATION;
rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE, 0,
"attempting to determine the durations");
if (rc)
return rc;
if (be32_to_cpu(tpm_cmd.header.out.return_code) != 0 ||
be32_to_cpu(tpm_cmd.header.out.length)
!= sizeof(tpm_cmd.header.out) + sizeof(u32) + 3 * sizeof(u32))
return -EINVAL;
duration_cap = &tpm_cmd.params.getcap_out.cap.duration;
chip->duration[TPM_SHORT] =
usecs_to_jiffies(be32_to_cpu(duration_cap->tpm_short));
chip->duration[TPM_MEDIUM] =
usecs_to_jiffies(be32_to_cpu(duration_cap->tpm_medium));
chip->duration[TPM_LONG] =
usecs_to_jiffies(be32_to_cpu(duration_cap->tpm_long));
/* The Broadcom BCM0102 chipset in a Dell Latitude D820 gets the above
* value wrong and apparently reports msecs rather than usecs. So we
* fix up the resulting too-small TPM_SHORT value to make things work.
* We also scale the TPM_MEDIUM and -_LONG values by 1000.
*/
if (chip->duration[TPM_SHORT] < (HZ / 100)) {
chip->duration[TPM_SHORT] = HZ;
chip->duration[TPM_MEDIUM] *= 1000;
chip->duration[TPM_LONG] *= 1000;
chip->duration_adjusted = true;
dev_info(&chip->dev, "Adjusting TPM timeout parameters.");
}
return 0;
}
u32 tpm_resume(struct udevice *dev)
{
return tpm_startup(dev, TPM_ST_STATE);
}
