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Revert "security/tpm/: turn tis_{init,open} into tis_probe"

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This reverts commit d43154486d.

From CB:68991: This causes CraterLake boot up process to die.
Investigation in progress.

Change-Id: I4a6c11b0e638a891108fe230bdaea92d5fbca020
Signed-off-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71205
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Tested-by: siemens-bot
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
This commit is contained in:
Sergii Dmytruk
2022-12-22 19:35:25 +02:00
committed by Felix Held
parent 025d20eaeb
commit 4ee03170e0
11 changed files with 180 additions and 124 deletions
Download Patch File Download Diff File Expand all files Collapse all files

63
src/drivers/spi/tpm/tis.c
View File

@@ -5,6 +5,8 @@
#include "tpm.h"
static unsigned int tpm_is_open;
static const struct {
uint16_t vid;
uint16_t did;
@@ -27,8 +29,41 @@ static const char *tis_get_dev_name(struct tpm2_info *info)
return "Unknown";
}
static int tpm_sendrecv(const uint8_t *sendbuf, size_t sbuf_size,
uint8_t *recvbuf, size_t *rbuf_len)
int tis_open(void)
{
if (tpm_is_open) {
printk(BIOS_ERR, "%s() called twice.\n", __func__);
return -1;
}
return 0;
}
int tis_init(void)
{
struct spi_slave spi;
struct tpm2_info info;
if (spi_setup_slave(CONFIG_DRIVER_TPM_SPI_BUS,
CONFIG_DRIVER_TPM_SPI_CHIP, &spi)) {
printk(BIOS_ERR, "Failed to setup TPM SPI slave\n");
return -1;
}
if (tpm2_init(&spi)) {
printk(BIOS_ERR, "Failed to initialize TPM SPI interface\n");
return -1;
}
tpm2_get_info(&info);
printk(BIOS_INFO, "Initialized TPM device %s revision %d\n",
tis_get_dev_name(&info), info.revision);
return 0;
}
int tis_sendrecv(const uint8_t *sendbuf, size_t sbuf_size,
uint8_t *recvbuf, size_t *rbuf_len)
{
int len = tpm2_process_command(sendbuf, sbuf_size, recvbuf, *rbuf_len);
@@ -39,27 +74,3 @@ static int tpm_sendrecv(const uint8_t *sendbuf, size_t sbuf_size,
return 0;
}
tis_sendrecv_fn tis_probe(void)
{
struct spi_slave spi;
struct tpm2_info info;
if (spi_setup_slave(CONFIG_DRIVER_TPM_SPI_BUS,
CONFIG_DRIVER_TPM_SPI_CHIP, &spi)) {
printk(BIOS_ERR, "Failed to setup TPM SPI slave\n");
return NULL;
}
if (tpm2_init(&spi)) {
printk(BIOS_ERR, "Failed to initialize TPM SPI interface\n");
return NULL;
}
tpm2_get_info(&info);
printk(BIOS_INFO, "Initialized TPM device %s revision %d\n",
tis_get_dev_name(&info), info.revision);
return &tpm_sendrecv;
}