diff options
| -rw-r--r-- | src/vendorcode/google/chromeos/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/vendorcode/google/chromeos/chromeos.h | 6 | ||||
| -rw-r--r-- | src/vendorcode/google/chromeos/tpm_factory_config.c | 31 |
3 files changed, 38 insertions, 0 deletions
diff --git a/src/vendorcode/google/chromeos/Makefile.inc b/src/vendorcode/google/chromeos/Makefile.inc index fbfd7a4e2f..dce4d9ccf1 100644 --- a/src/vendorcode/google/chromeos/Makefile.inc +++ b/src/vendorcode/google/chromeos/Makefile.inc @@ -9,6 +9,7 @@ ramstage-$(CONFIG_CHROMEOS_DISABLE_PLATFORM_HIERARCHY_ON_RESUME) += tpm2.c ramstage-$(CONFIG_HAVE_REGULATORY_DOMAIN) += wrdd.c ramstage-$(CONFIG_USE_SAR) += sar.c ramstage-$(CONFIG_TPM_GOOGLE) += cr50_enable_update.c +ramstage-$(CONFIG_TPM_GOOGLE) += tpm_factory_config.c romstage-$(CONFIG_CHROMEOS_CSE_BOARD_RESET_OVERRIDE) += cse_board_reset.c ramstage-$(CONFIG_CHROMEOS_CSE_BOARD_RESET_OVERRIDE) += cse_board_reset.c diff --git a/src/vendorcode/google/chromeos/chromeos.h b/src/vendorcode/google/chromeos/chromeos.h index cab855d34e..c14af319f5 100644 --- a/src/vendorcode/google/chromeos/chromeos.h +++ b/src/vendorcode/google/chromeos/chromeos.h @@ -26,6 +26,12 @@ void mainboard_prepare_cr50_reset(void); void cbmem_add_vpd_calibration_data(void); void chromeos_set_me_hash(u32*, int); void chromeos_set_ramoops(void *ram_oops, size_t size); +/* + * The factory config space is a one-time programmable info page. + * For the unprovisioned one, the read will be 0x0. + * Return `-1` in case of error. + */ +int64_t chromeos_get_factory_config(void); /* * Declaration for mainboards to use to generate ACPI-specific ChromeOS needs. diff --git a/src/vendorcode/google/chromeos/tpm_factory_config.c b/src/vendorcode/google/chromeos/tpm_factory_config.c new file mode 100644 index 0000000000..3b68020bd1 --- /dev/null +++ b/src/vendorcode/google/chromeos/tpm_factory_config.c @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <console/console.h> +#include <security/tpm/tss.h> +#include <vendorcode/google/chromeos/chromeos.h> + +int64_t chromeos_get_factory_config(void) +{ + static int64_t factory_config = -1; + + if (factory_config >= 0) + return factory_config; + + /* Initialize TPM driver. */ + tpm_result_t rc = tlcl_lib_init(); + if (rc != TPM_SUCCESS) { + printk(BIOS_ERR, "%s:%d - tlcl_lib_init() failed: %#x\n", + __func__, __LINE__, rc); + return -1; + } + + rc = tlcl_cr50_get_factory_config((uint64_t *)&factory_config); + + if (rc != TPM_SUCCESS) { + printk(BIOS_ERR, "%s:%d - tlcl_cr50_get_factory_config() failed: %#x\n", + __func__, __LINE__, rc); + return -1; + } + + return factory_config; +} |