diff options
Diffstat (limited to 'firmware/2lib/2secdatak.c')
-rw-r--r-- | firmware/2lib/2secdatak.c | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/firmware/2lib/2secdatak.c b/firmware/2lib/2secdatak.c deleted file mode 100644 index f6bc4c82..00000000 --- a/firmware/2lib/2secdatak.c +++ /dev/null @@ -1,121 +0,0 @@ -/* Copyright 2015 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - * - * Secure storage APIs - kernel version space - */ - -#include "2sysincludes.h" -#include "2common.h" -#include "2crc8.h" -#include "2misc.h" -#include "2secdata.h" - -vb2_error_t vb2api_secdatak_check(struct vb2_context *ctx) -{ - struct vb2_secdatak *sec = (struct vb2_secdatak *)ctx->secdatak; - - /* Verify CRC */ - if (sec->crc8 != vb2_crc8(sec, offsetof(struct vb2_secdatak, crc8))) { - VB2_DEBUG("secdata_kernel: bad CRC\n"); - return VB2_ERROR_SECDATAK_CRC; - } - - /* Verify version */ - if (sec->struct_version < VB2_SECDATAK_VERSION) { - VB2_DEBUG("secdata_firmware: version incompatible\n"); - return VB2_ERROR_SECDATAK_VERSION; - } - - /* Verify UID */ - if (sec->uid != VB2_SECDATAK_UID) { - VB2_DEBUG("secdata_kernel: bad UID\n"); - return VB2_ERROR_SECDATAK_UID; - } - - return VB2_SUCCESS; -} - -vb2_error_t vb2api_secdatak_create(struct vb2_context *ctx) -{ - struct vb2_secdatak *sec = (struct vb2_secdatak *)ctx->secdatak; - - /* Clear the entire struct */ - memset(sec, 0, sizeof(*sec)); - - /* Set to current version */ - sec->struct_version = VB2_SECDATAK_VERSION; - - /* Set UID */ - sec->uid = VB2_SECDATAK_UID; - - /* Calculate initial CRC */ - sec->crc8 = vb2_crc8(sec, offsetof(struct vb2_secdatak, crc8)); - ctx->flags |= VB2_CONTEXT_SECDATAK_CHANGED; - return VB2_SUCCESS; -} - -vb2_error_t vb2_secdatak_init(struct vb2_context *ctx) -{ - struct vb2_shared_data *sd = vb2_get_sd(ctx); - vb2_error_t rv; - - rv = vb2api_secdatak_check(ctx); - if (rv) - return rv; - - /* Set status flag */ - sd->status |= VB2_SD_STATUS_SECDATAK_INIT; - - return VB2_SUCCESS; -} - -vb2_error_t vb2_secdatak_get(struct vb2_context *ctx, - enum vb2_secdatak_param param, uint32_t *dest) -{ - struct vb2_shared_data *sd = vb2_get_sd(ctx); - struct vb2_secdatak *sec = (struct vb2_secdatak *)ctx->secdatak; - - if (!(sd->status & VB2_SD_STATUS_SECDATAK_INIT)) - return VB2_ERROR_SECDATAK_GET_UNINITIALIZED; - - switch(param) { - case VB2_SECDATAK_VERSIONS: - *dest = sec->kernel_versions; - return VB2_SUCCESS; - - default: - return VB2_ERROR_SECDATAK_GET_PARAM; - } -} - -vb2_error_t vb2_secdatak_set(struct vb2_context *ctx, - enum vb2_secdatak_param param, uint32_t value) -{ - struct vb2_shared_data *sd = vb2_get_sd(ctx); - struct vb2_secdatak *sec = (struct vb2_secdatak *)ctx->secdatak; - uint32_t now; - - if (!(sd->status & VB2_SD_STATUS_SECDATAK_INIT)) - return VB2_ERROR_SECDATAK_SET_UNINITIALIZED; - - /* If not changing the value, don't regenerate the CRC. */ - if (vb2_secdatak_get(ctx, param, &now) == VB2_SUCCESS && now == value) - return VB2_SUCCESS; - - switch(param) { - case VB2_SECDATAK_VERSIONS: - VB2_DEBUG("secdatak versions updated from 0x%x to 0x%x\n", - sec->kernel_versions, value); - sec->kernel_versions = value; - break; - - default: - return VB2_ERROR_SECDATAK_SET_PARAM; - } - - /* Regenerate CRC */ - sec->crc8 = vb2_crc8(sec, offsetof(struct vb2_secdatak, crc8)); - ctx->flags |= VB2_CONTEXT_SECDATAK_CHANGED; - return VB2_SUCCESS; -} |