93447c42a8
BUG=none TEST=See "[INFO ] Initialized TPM device TI50 revision 83" Signed-off-by: Yidi Lin <yidilin@chromium.org> Change-Id: I3af5f4653b6b8ecd086f85ec573530a4e5c57211 Reviewed-on: https://review.coreboot.org/c/coreboot/+/66786 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Yu-Ping Wu <yupingso@google.com>
90 lines
1.6 KiB
C
90 lines
1.6 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
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#include <console/console.h>
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#include <security/tpm/tis.h>
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#include "tpm.h"
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static unsigned int tpm_is_open;
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static const struct {
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uint16_t vid;
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uint16_t did;
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const char *device_name;
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} dev_map[] = {
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{ 0x15d1, 0x001b, "SLB9670" },
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{ 0x1ae0, 0x0028, "CR50" },
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{ 0x104a, 0x0000, "ST33HTPH2E32" },
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{ 0x6666, 0x504a, "TI50" },
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};
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static const char *tis_get_dev_name(struct tpm2_info *info)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(dev_map); i++)
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if ((dev_map[i].vid == info->vendor_id) &&
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(dev_map[i].did == info->device_id))
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return dev_map[i].device_name;
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return "Unknown";
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}
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int tis_open(void)
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{
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if (tpm_is_open) {
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printk(BIOS_ERR, "%s() called twice.\n", __func__);
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return -1;
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}
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return 0;
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}
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int tis_close(void)
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{
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if (tpm_is_open) {
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/*
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* Do we need to do something here, like waiting for a
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* transaction to stop?
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*/
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tpm_is_open = 0;
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}
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return 0;
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}
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int tis_init(void)
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{
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struct spi_slave spi;
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struct tpm2_info info;
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if (spi_setup_slave(CONFIG_DRIVER_TPM_SPI_BUS,
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CONFIG_DRIVER_TPM_SPI_CHIP, &spi)) {
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printk(BIOS_ERR, "Failed to setup TPM SPI slave\n");
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return -1;
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}
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if (tpm2_init(&spi)) {
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printk(BIOS_ERR, "Failed to initialize TPM SPI interface\n");
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return -1;
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}
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tpm2_get_info(&info);
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printk(BIOS_INFO, "Initialized TPM device %s revision %d\n",
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tis_get_dev_name(&info), info.revision);
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return 0;
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}
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int tis_sendrecv(const uint8_t *sendbuf, size_t sbuf_size,
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uint8_t *recvbuf, size_t *rbuf_len)
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{
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int len = tpm2_process_command(sendbuf, sbuf_size, recvbuf, *rbuf_len);
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if (len == 0)
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return -1;
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*rbuf_len = len;
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return 0;
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}
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