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57e405e1f4
Support Bootconfig feature.
- The bootconfig feature replaces the androidboot.*
kernel cmdline options.
This was adapted from downstream [1] commit : 7af0a0506d4d ("cuttlefish:
support bootconfig parameters").
Link:[1] https://android.googlesource.com/platform/external/u-boot/
Signed-off-by: Safae Ouajih <souajih@baylibre.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Tested-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
362 lines
14 KiB
C
362 lines
14 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
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/*
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* This is from the Android Project,
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* Repository: https://android.googlesource.com/platform/system/tools/mkbootimg
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* File: include/bootimg/bootimg.h
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* Commit: cce5b1923e3cd2fcb765b512610bdc5c42bc501d
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*
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* Copyright (C) 2007 The Android Open Source Project
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*/
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#ifndef _ANDROID_IMAGE_H_
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#define _ANDROID_IMAGE_H_
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#include <linux/compiler.h>
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#include <linux/types.h>
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#define ANDR_GKI_PAGE_SIZE 4096
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#define ANDR_BOOT_MAGIC "ANDROID!"
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#define ANDR_BOOT_MAGIC_SIZE 8
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#define ANDR_BOOT_NAME_SIZE 16
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#define ANDR_BOOT_ARGS_SIZE 512
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#define ANDR_BOOT_EXTRA_ARGS_SIZE 1024
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#define VENDOR_BOOT_MAGIC "VNDRBOOT"
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#define ANDR_VENDOR_BOOT_MAGIC_SIZE 8
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#define ANDR_VENDOR_BOOT_ARGS_SIZE 2048
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#define ANDR_VENDOR_BOOT_NAME_SIZE 16
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#define BOOTCONFIG_MAGIC "#BOOTCONFIG\n"
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#define BOOTCONFIG_MAGIC_SIZE 12
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#define BOOTCONFIG_SIZE_SIZE 4
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#define BOOTCONFIG_CHECKSUM_SIZE 4
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#define BOOTCONFIG_TRAILER_SIZE BOOTCONFIG_MAGIC_SIZE + \
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BOOTCONFIG_SIZE_SIZE + \
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BOOTCONFIG_CHECKSUM_SIZE
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struct andr_boot_img_hdr_v3 {
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u8 magic[ANDR_BOOT_MAGIC_SIZE];
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u32 kernel_size; /* size in bytes */
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u32 ramdisk_size; /* size in bytes */
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u32 os_version;
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u32 header_size; /* size of boot image header in bytes */
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u32 reserved[4];
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u32 header_version; /* offset remains constant for version check */
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u8 cmdline[ANDR_BOOT_ARGS_SIZE + ANDR_BOOT_EXTRA_ARGS_SIZE];
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/* for boot image header v4 only */
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u32 signature_size; /* size in bytes */
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};
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struct andr_vnd_boot_img_hdr {
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u8 magic[ANDR_VENDOR_BOOT_MAGIC_SIZE];
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u32 header_version;
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u32 page_size; /* flash page size we assume */
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u32 kernel_addr; /* physical load addr */
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u32 ramdisk_addr; /* physical load addr */
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u32 vendor_ramdisk_size; /* size in bytes */
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u8 cmdline[ANDR_VENDOR_BOOT_ARGS_SIZE];
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u32 tags_addr; /* physical addr for kernel tags */
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u8 name[ANDR_VENDOR_BOOT_NAME_SIZE]; /* asciiz product name */
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u32 header_size; /* size of vendor boot image header in bytes */
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u32 dtb_size; /* size of dtb image */
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u64 dtb_addr; /* physical load address */
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/* for boot image header v4 only */
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u32 vendor_ramdisk_table_size; /* size in bytes for the vendor ramdisk table */
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u32 vendor_ramdisk_table_entry_num; /* number of entries in the vendor ramdisk table */
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u32 vendor_ramdisk_table_entry_size; /* size in bytes for a vendor ramdisk table entry */
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u32 bootconfig_size; /* size in bytes for the bootconfig section */
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};
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/* The bootloader expects the structure of andr_boot_img_hdr_v0 with header
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* version 0 to be as follows: */
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struct andr_boot_img_hdr_v0 {
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/* Must be ANDR_BOOT_MAGIC. */
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char magic[ANDR_BOOT_MAGIC_SIZE];
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u32 kernel_size; /* size in bytes */
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u32 kernel_addr; /* physical load addr */
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u32 ramdisk_size; /* size in bytes */
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u32 ramdisk_addr; /* physical load addr */
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u32 second_size; /* size in bytes */
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u32 second_addr; /* physical load addr */
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u32 tags_addr; /* physical addr for kernel tags */
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u32 page_size; /* flash page size we assume */
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/* Version of the boot image header. */
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u32 header_version;
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/* Operating system version and security patch level.
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* For version "A.B.C" and patch level "Y-M-D":
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* (7 bits for each of A, B, C; 7 bits for (Y-2000), 4 bits for M)
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* os_version = A[31:25] B[24:18] C[17:11] (Y-2000)[10:4] M[3:0] */
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u32 os_version;
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char name[ANDR_BOOT_NAME_SIZE]; /* asciiz product name */
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char cmdline[ANDR_BOOT_ARGS_SIZE];
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u32 id[8]; /* timestamp / checksum / sha1 / etc */
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/* Supplemental command line data; kept here to maintain
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* binary compatibility with older versions of mkbootimg. */
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char extra_cmdline[ANDR_BOOT_EXTRA_ARGS_SIZE];
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/* Fields in boot_img_hdr_v1 and newer. */
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u32 recovery_dtbo_size; /* size in bytes for recovery DTBO/ACPIO image */
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u64 recovery_dtbo_offset; /* offset to recovery dtbo/acpio in boot image */
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u32 header_size;
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/* Fields in boot_img_hdr_v2 and newer. */
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u32 dtb_size; /* size in bytes for DTB image */
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u64 dtb_addr; /* physical load address for DTB image */
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} __attribute__((packed));
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/* When a boot header is of version 0, the structure of boot image is as
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* follows:
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*
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* +-----------------+
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* | boot header | 1 page
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* +-----------------+
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* | kernel | n pages
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* +-----------------+
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* | ramdisk | m pages
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* +-----------------+
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* | second stage | o pages
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* +-----------------+
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*
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* n = (kernel_size + page_size - 1) / page_size
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* m = (ramdisk_size + page_size - 1) / page_size
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* o = (second_size + page_size - 1) / page_size
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*
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* 0. all entities are page_size aligned in flash
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* 1. kernel and ramdisk are required (size != 0)
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* 2. second is optional (second_size == 0 -> no second)
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* 3. load each element (kernel, ramdisk, second) at
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* the specified physical address (kernel_addr, etc)
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* 4. prepare tags at tag_addr. kernel_args[] is
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* appended to the kernel commandline in the tags.
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* 5. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr
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* 6. if second_size != 0: jump to second_addr
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* else: jump to kernel_addr
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*/
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/* When the boot image header has a version of 2, the structure of the boot
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* image is as follows:
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*
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* +---------------------+
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* | boot header | 1 page
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* +---------------------+
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* | kernel | n pages
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* +---------------------+
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* | ramdisk | m pages
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* +---------------------+
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* | second stage | o pages
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* +---------------------+
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* | recovery dtbo/acpio | p pages
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* +---------------------+
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* | dtb | q pages
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* +---------------------+
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*
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* n = (kernel_size + page_size - 1) / page_size
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* m = (ramdisk_size + page_size - 1) / page_size
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* o = (second_size + page_size - 1) / page_size
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* p = (recovery_dtbo_size + page_size - 1) / page_size
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* q = (dtb_size + page_size - 1) / page_size
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*
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* 0. all entities are page_size aligned in flash
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* 1. kernel, ramdisk and DTB are required (size != 0)
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* 2. recovery_dtbo/recovery_acpio is required for recovery.img in non-A/B
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* devices(recovery_dtbo_size != 0)
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* 3. second is optional (second_size == 0 -> no second)
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* 4. load each element (kernel, ramdisk, second, dtb) at
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* the specified physical address (kernel_addr, etc)
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* 5. If booting to recovery mode in a non-A/B device, extract recovery
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* dtbo/acpio and apply the correct set of overlays on the base device tree
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* depending on the hardware/product revision.
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* 6. prepare tags at tag_addr. kernel_args[] is
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* appended to the kernel commandline in the tags.
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* 7. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr
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* 8. if second_size != 0: jump to second_addr
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* else: jump to kernel_addr
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*/
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/* When the boot image header has a version of 3, the structure of the boot
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* image is as follows:
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*
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* +---------------------+
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* | boot header | 4096 bytes
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* +---------------------+
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* | kernel | m pages
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* +---------------------+
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* | ramdisk | n pages
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* +---------------------+
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*
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* m = (kernel_size + 4096 - 1) / 4096
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* n = (ramdisk_size + 4096 - 1) / 4096
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*
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* Note that in version 3 of the boot image header, page size is fixed at 4096 bytes.
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*
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* The structure of the vendor boot image (introduced with version 3 and
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* required to be present when a v3 boot image is used) is as follows:
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*
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* +---------------------+
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* | vendor boot header | o pages
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* +---------------------+
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* | vendor ramdisk | p pages
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* +---------------------+
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* | dtb | q pages
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* +---------------------+
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* o = (2112 + page_size - 1) / page_size
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* p = (vendor_ramdisk_size + page_size - 1) / page_size
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* q = (dtb_size + page_size - 1) / page_size
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*
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* 0. all entities in the boot image are 4096-byte aligned in flash, all
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* entities in the vendor boot image are page_size (determined by the vendor
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* and specified in the vendor boot image header) aligned in flash
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* 1. kernel, ramdisk, vendor ramdisk, and DTB are required (size != 0)
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* 2. load the kernel and DTB at the specified physical address (kernel_addr,
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* dtb_addr)
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* 3. load the vendor ramdisk at ramdisk_addr
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* 4. load the generic ramdisk immediately following the vendor ramdisk in
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* memory
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* 5. set up registers for kernel entry as required by your architecture
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* 6. if the platform has a second stage bootloader jump to it (must be
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* contained outside boot and vendor boot partitions), otherwise
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* jump to kernel_addr
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*/
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/* When the boot image header has a version of 4, the structure of the boot
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* image is as follows:
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*
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* +---------------------+
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* | boot header | 4096 bytes
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* +---------------------+
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* | kernel | m pages
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* +---------------------+
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* | ramdisk | n pages
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* +---------------------+
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* | boot signature | g pages
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* +---------------------+
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*
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* m = (kernel_size + 4096 - 1) / 4096
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* n = (ramdisk_size + 4096 - 1) / 4096
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* g = (signature_size + 4096 - 1) / 4096
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*
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* Note that in version 4 of the boot image header, page size is fixed at 4096
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* bytes.
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*
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* The structure of the vendor boot image version 4, which is required to be
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* present when a version 4 boot image is used, is as follows:
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*
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* +------------------------+
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* | vendor boot header | o pages
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* +------------------------+
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* | vendor ramdisk section | p pages
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* +------------------------+
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* | dtb | q pages
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* +------------------------+
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* | vendor ramdisk table | r pages
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* +------------------------+
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* | bootconfig | s pages
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* +------------------------+
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*
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* o = (2128 + page_size - 1) / page_size
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* p = (vendor_ramdisk_size + page_size - 1) / page_size
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* q = (dtb_size + page_size - 1) / page_size
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* r = (vendor_ramdisk_table_size + page_size - 1) / page_size
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* s = (vendor_bootconfig_size + page_size - 1) / page_size
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*
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* Note that in version 4 of the vendor boot image, multiple vendor ramdisks can
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* be included in the vendor boot image. The bootloader can select a subset of
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* ramdisks to load at runtime. To help the bootloader select the ramdisks, each
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* ramdisk is tagged with a type tag and a set of hardware identifiers
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* describing the board, soc or platform that this ramdisk is intended for.
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*
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* The vendor ramdisk section is consist of multiple ramdisk images concatenated
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* one after another, and vendor_ramdisk_size is the size of the section, which
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* is the total size of all the ramdisks included in the vendor boot image.
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*
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* The vendor ramdisk table holds the size, offset, type, name and hardware
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* identifiers of each ramdisk. The type field denotes the type of its content.
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* The vendor ramdisk names are unique. The hardware identifiers are specified
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* in the board_id field in each table entry. The board_id field is consist of a
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* vector of unsigned integer words, and the encoding scheme is defined by the
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* hardware vendor.
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*
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* For the different type of ramdisks, there are:
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* - VENDOR_RAMDISK_TYPE_NONE indicates the value is unspecified.
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* - VENDOR_RAMDISK_TYPE_PLATFORM ramdisks contain platform specific bits, so
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* the bootloader should always load these into memory.
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* - VENDOR_RAMDISK_TYPE_RECOVERY ramdisks contain recovery resources, so
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* the bootloader should load these when booting into recovery.
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* - VENDOR_RAMDISK_TYPE_DLKM ramdisks contain dynamic loadable kernel
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* modules.
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*
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* Version 4 of the vendor boot image also adds a bootconfig section to the end
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* of the image. This section contains Boot Configuration parameters known at
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* build time. The bootloader is responsible for placing this section directly
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* after the generic ramdisk, followed by the bootconfig trailer, before
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* entering the kernel.
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*
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* 0. all entities in the boot image are 4096-byte aligned in flash, all
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* entities in the vendor boot image are page_size (determined by the vendor
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* and specified in the vendor boot image header) aligned in flash
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* 1. kernel, ramdisk, and DTB are required (size != 0)
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* 2. load the kernel and DTB at the specified physical address (kernel_addr,
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* dtb_addr)
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* 3. load the vendor ramdisks at ramdisk_addr
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* 4. load the generic ramdisk immediately following the vendor ramdisk in
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* memory
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* 5. load the bootconfig immediately following the generic ramdisk. Add
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* additional bootconfig parameters followed by the bootconfig trailer.
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* 6. set up registers for kernel entry as required by your architecture
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* 7. if the platform has a second stage bootloader jump to it (must be
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* contained outside boot and vendor boot partitions), otherwise
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* jump to kernel_addr
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*/
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/* Private struct */
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struct andr_image_data {
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ulong kernel_ptr; /* kernel address */
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u32 kernel_size; /* size in bytes */
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u32 ramdisk_size; /* size in bytes */
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ulong vendor_ramdisk_ptr; /* vendor ramdisk address */
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u32 vendor_ramdisk_size; /* vendor ramdisk size*/
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u32 boot_ramdisk_size; /* size in bytes */
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ulong second_ptr; /* secondary bootloader address */
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u32 second_size; /* secondary bootloader size */
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ulong dtb_ptr; /* address of dtb image */
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u32 dtb_size; /* size of dtb image */
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ulong recovery_dtbo_ptr; /* size in bytes for recovery DTBO/ACPIO image */
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u32 recovery_dtbo_size; /* offset to recovery dtbo/acpio in boot image */
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const char *kcmdline; /* boot kernel cmdline */
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const char *kcmdline_extra; /* vendor-boot extra kernel cmdline */
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const char *image_name; /* asciiz product name */
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ulong bootconfig_addr; /* bootconfig image address */
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ulong bootconfig_size; /* bootconfig image size */
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u32 kernel_addr; /* physical load addr */
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ulong ramdisk_addr; /* physical load addr */
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ulong ramdisk_ptr; /* ramdisk address */
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ulong dtb_load_addr; /* physical load address for DTB image */
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ulong tags_addr; /* physical addr for kernel tags */
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u32 header_version; /* version of the boot image header */
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u32 boot_img_total_size; /* boot image size */
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u32 vendor_boot_img_total_size; /* vendor boot image size */
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};
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#endif
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