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f182401b97
LoadKernel() was a big function which did everything from looping over partitions on a drive to loading the data within them to calling the low-level verification functions on that data. Split it apart into more manageable chunks. This also reduces indentation of the inner parts of the code, whic increases readability. No outwardly-visible functionality changes. BUG=chromium:611535 BRANCH=none TEST=make runtests; emerge-kevin coreboot depthcharge Change-Id: Iea79e70163f5d9f1a9d0d897e4a9bacc925a742d Signed-off-by: Randall Spangler <rspangler@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/404919 Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* High-level firmware API for loading and verifying kernel.
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* (Firmware Portion)
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*/
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#ifndef VBOOT_REFERENCE_LOAD_KERNEL_FW_H_
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#define VBOOT_REFERENCE_LOAD_KERNEL_FW_H_
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#include "vboot_api.h"
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#include "vboot_nvstorage.h"
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/* Interface provided by verified boot library to BDS */
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/* Boot flags for LoadKernel().boot_flags */
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/* Developer switch is on */
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#define BOOT_FLAG_DEVELOPER (0x01ULL)
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/* In recovery mode */
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#define BOOT_FLAG_RECOVERY (0x02ULL)
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/* GPT is external */
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#define BOOT_FLAG_EXTERNAL_GPT (0x04ULL)
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struct RollbackSpaceFwmp;
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typedef struct LoadKernelParams {
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/* Inputs to LoadKernel() */
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/* Pointer to GBB data */
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void *gbb_data;
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/* Size of GBB data in bytes */
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uint64_t gbb_size;
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/* Disk handle for current device */
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VbExDiskHandle_t disk_handle;
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/* Bytes per lba sector on current device */
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uint64_t bytes_per_lba;
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/* Number of LBA-addressable sectors on the main device */
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uint64_t streaming_lba_count;
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/* Random-access GPT size */
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uint64_t gpt_lba_count;
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/* Destination buffer for kernel (normally at 0x100000) */
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void *kernel_buffer;
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/* Size of kernel buffer in bytes */
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uint64_t kernel_buffer_size;
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/* Boot flags */
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uint64_t boot_flags;
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/*
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* Context for NV storage. Caller is responsible for calling
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* VbNvSetup() and VbNvTeardown() on the context.
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*/
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VbNvContext *nv_context;
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/* Firmware management parameters; may be NULL if not present. */
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const struct RollbackSpaceFwmp *fwmp;
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/*
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* Outputs from LoadKernel(); valid only if LoadKernel() returns
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* LOAD_KERNEL_SUCCESS
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*/
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/* Partition number to boot on current device (1...M) */
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uint32_t partition_number;
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/* Address of bootloader image in RAM */
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uint64_t bootloader_address;
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/* Size of bootloader image in bytes */
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uint32_t bootloader_size;
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/* UniquePartitionGuid for boot partition */
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uint8_t partition_guid[16];
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/* Flags passed in by signer */
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uint32_t flags;
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} LoadKernelParams;
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/**
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* Attempt to load the kernel from the current device.
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*
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* Returns VBERROR_SUCCESS if successful. If unsuccessful, sets a recovery
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* reason via VbNvStorage and returns an error code.
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*/
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VbError_t LoadKernel(LoadKernelParams *params, VbCommonParams *cparams);
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#endif /* VBOOT_REFERENCE_LOAD_KERNEL_FW_H_ */
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