/* SPDX-License-Identifier: BSD-3-Clause */ #include <console/console.h> #include <security/tpm/tis.h> #include "tpm.h" static const struct { uint16_t vid; uint16_t did; const char *device_name; } dev_map[] = { { 0x15d1, 0x001b, "SLB9670" }, { 0x1ae0, 0x0028, "CR50" }, { 0x104a, 0x0000, "ST33HTPH2E32" }, { 0x6666, 0x504a, "TI50" }, }; static const char *tis_get_dev_name(struct tpm2_info *info) { int i; for (i = 0; i < ARRAY_SIZE(dev_map); i++) if ((dev_map[i].vid == info->vendor_id) && (dev_map[i].did == info->device_id)) return dev_map[i].device_name; return "Unknown"; } static tpm_result_t tpm_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); if (len == 0) return TPM_CB_FAIL; *rbuf_len = len; return TPM_SUCCESS; } 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; }