3ccd53b647
We don't need to include this file anymore, so drop it. Signed-off-by: Simon Glass <sjg@chromium.org>
97 lines
2.0 KiB
C
97 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Aurora Innovation, Inc. Copyright 2022.
|
|
*
|
|
*/
|
|
|
|
#include <dm.h>
|
|
#include <efi.h>
|
|
#include <efi_api.h>
|
|
#include <efi_tcg2.h>
|
|
#include <malloc.h>
|
|
#include <tpm-v2.h>
|
|
|
|
static int efi_tpm_bind(struct udevice *dev)
|
|
{
|
|
struct tpm_chip_priv *priv = dev_get_uclass_priv(dev);
|
|
struct efi_tpm_plat *plat = dev_get_plat(dev);
|
|
struct efi_tcg2_boot_service_capability caps;
|
|
efi_status_t status;
|
|
|
|
caps.size = sizeof(caps);
|
|
status = plat->proto->get_capability(plat->proto, &caps);
|
|
if (status != EFI_SUCCESS)
|
|
return -EINVAL;
|
|
|
|
if (!caps.tpm_present_flag)
|
|
return -ENODEV;
|
|
|
|
priv->pcr_count = 24;
|
|
priv->pcr_select_min = 3;
|
|
priv->version = TPM_V2;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int efi_tpm_open(struct udevice *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int efi_tpm_close(struct udevice *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int efi_tpm_xfer(struct udevice *dev, const u8 *sendbuf,
|
|
size_t send_size, u8 *recvbuf,
|
|
size_t *recv_len)
|
|
{
|
|
struct efi_tpm_plat *plat = dev_get_plat(dev);
|
|
efi_status_t status;
|
|
|
|
status = plat->proto->submit_command(plat->proto, send_size,
|
|
(u8 *)sendbuf, *recv_len,
|
|
recvbuf);
|
|
switch (status) {
|
|
case EFI_BUFFER_TOO_SMALL:
|
|
debug("%s:response length is bigger than receive buffer\n",
|
|
__func__);
|
|
return -EIO;
|
|
case EFI_DEVICE_ERROR:
|
|
debug("%s:received error from device on write\n", __func__);
|
|
return -EIO;
|
|
case EFI_INVALID_PARAMETER:
|
|
debug("%s:invalid parameter\n", __func__);
|
|
return -EINVAL;
|
|
case EFI_SUCCESS:
|
|
return 0;
|
|
default:
|
|
debug("%s:received unknown error 0x%lx\n", __func__, status);
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
static int efi_tpm_desc(struct udevice *dev, char *buf, int size)
|
|
{
|
|
if (size < 9)
|
|
return -ENOSPC;
|
|
|
|
return snprintf(buf, size, "UEFI TPM");
|
|
}
|
|
|
|
static const struct tpm_ops efi_tpm_ops = {
|
|
.open = efi_tpm_open,
|
|
.close = efi_tpm_close,
|
|
.get_desc = efi_tpm_desc,
|
|
.xfer = efi_tpm_xfer,
|
|
};
|
|
|
|
U_BOOT_DRIVER(efi_tpm) = {
|
|
.name = "efi_tpm",
|
|
.id = UCLASS_TPM,
|
|
.bind = efi_tpm_bind,
|
|
.ops = &efi_tpm_ops,
|
|
.plat_auto = sizeof(struct efi_tpm_plat),
|
|
};
|