Hi Alex,
On Mon, Aug 5, 2019 at 11:25 PM Alex Deymo deymo@google.com wrote:
This takes the latest changes from AOSP from the file include/bootimg/bootimg.h from the repository: https://android.googlesource.com/platform/system/tools/mkbootimg and update the U-Boot version with the latest changes.
This file keeps the changes from AOSP to a minimum:
- Comments were converted from C++ to C style.
- Code inside __cplusplus #ifdef blocks were removed.
- C++11 struct extensions replaced with a single struct.
Signed-off-by: Alex Deymo deymo@google.com
Thanks for submitting this, Alex.
Reviewed-by: Sam Protsenko semen.protsenko@linaro.org
Tom, can this be applied for -rc2? It shouldn't break anything, as all fields are preserved (patch only adds new ones), and header size is page_size everywhere anyway. I can send another patch on top of this one, to change associated routines a bit, so that users are able to boot boot.img v1 and v2 as well as legacy one (v0).
include/android_image.h | 120 ++++++++++++++++++++++++++++++---------- 1 file changed, 90 insertions(+), 30 deletions(-)
diff --git a/include/android_image.h b/include/android_image.h index d78db9e2b7..0519ece368 100644 --- a/include/android_image.h +++ b/include/android_image.h @@ -1,59 +1,78 @@ -/* SPDX-License-Identifier: BSD-2-Clause */ +/* SPDX-License-Identifier: BSD-3-Clause */ /*
- This is from the Android Project,
- File: mkbootimg/bootimg.h
- Commit: d162828814b08ada310846a33205befb69ef5799
- File: include/bootimg/bootimg.h
- Commit: e55998a0f2b61b685d5eb4a486ca3a0c680b1a2f
- Copyright (C) 2008 The Android Open Source Project
*/
- Copyright (C) 2007 The Android Open Source Project
#ifndef _ANDROID_IMAGE_H_ #define _ANDROID_IMAGE_H_
-typedef struct andr_img_hdr andr_img_hdr;
#define ANDR_BOOT_MAGIC "ANDROID!" #define ANDR_BOOT_MAGIC_SIZE 8 #define ANDR_BOOT_NAME_SIZE 16 #define ANDR_BOOT_ARGS_SIZE 512 #define ANDR_BOOT_EXTRA_ARGS_SIZE 1024
+/*
- It is expected that callers would explicitly specify which version of the
- boot image header they need to use.
- */
+typedef struct andr_img_hdr andr_img_hdr;
+/* The bootloader expects the structure of andr_img_hdr with header
- version 0 to be as follows: */
struct andr_img_hdr {
char magic[ANDR_BOOT_MAGIC_SIZE];
- /* Must be ANDR_BOOT_MAGIC. */
- char magic[ANDR_BOOT_MAGIC_SIZE];
u32 kernel_size; /* size in bytes */u32 kernel_addr; /* physical load addr */
- u32 kernel_size; /* size in bytes */
- u32 kernel_addr; /* physical load addr */
u32 ramdisk_size; /* size in bytes */u32 ramdisk_addr; /* physical load addr */
- u32 ramdisk_size; /* size in bytes */
- u32 ramdisk_addr; /* physical load addr */
u32 second_size; /* size in bytes */u32 second_addr; /* physical load addr */
- u32 second_size; /* size in bytes */
- u32 second_addr; /* physical load addr */
u32 tags_addr; /* physical addr for kernel tags */u32 page_size; /* flash page size we assume */u32 unused; /* reserved for future expansion: MUST be 0 */
- u32 tags_addr; /* physical addr for kernel tags */
- u32 page_size; /* flash page size we assume */
/* operating system version and security patch level; for* version "A.B.C" and patch level "Y-M-D":* ver = A << 14 | B << 7 | C (7 bits for each of A, B, C)* lvl = ((Y - 2000) & 127) << 4 | M (7 bits for Y, 4 bits for M)* os_version = ver << 11 | lvl */u32 os_version;
- /* Version of the boot image header. */
- u32 header_version;
char name[ANDR_BOOT_NAME_SIZE]; /* asciiz product name */
- /* Operating system version and security patch level.
* For version "A.B.C" and patch level "Y-M-D":* (7 bits for each of A, B, C; 7 bits for (Y-2000), 4 bits for M)* os_version = A[31:25] B[24:18] C[17:11] (Y-2000)[10:4] M[3:0] */- u32 os_version;
char cmdline[ANDR_BOOT_ARGS_SIZE];
- char name[ANDR_BOOT_NAME_SIZE]; /* asciiz product name */
u32 id[8]; /* timestamp / checksum / sha1 / etc */
- char cmdline[ANDR_BOOT_ARGS_SIZE];
/* Supplemental command line data; kept here to maintain* binary compatibility with older versions of mkbootimg */char extra_cmdline[ANDR_BOOT_EXTRA_ARGS_SIZE];
- u32 id[8]; /* timestamp / checksum / sha1 / etc */
- /* Supplemental command line data; kept here to maintain
* binary compatibility with older versions of mkbootimg. */- char extra_cmdline[ANDR_BOOT_EXTRA_ARGS_SIZE];
- /* Fields in boot_img_hdr_v1 and newer. */
- u32 recovery_dtbo_size; /* size in bytes for recovery DTBO/ACPIO image */
- u64 recovery_dtbo_offset; /* offset to recovery dtbo/acpio in boot image */
- u32 header_size;
- /* Fields in boot_img_hdr_v2 and newer. */
- u32 dtb_size; /* size in bytes for DTB image */
- u64 dtb_addr; /* physical load address for DTB image */
} __attribute__((packed));
-/* +/* When a boot header is of version 0, the structure of boot image is as
- follows:
- +-----------------+
- | boot header | 1 page
- +-----------------+
@@ -79,4 +98,45 @@ struct andr_img_hdr {
- if second_size != 0: jump to second_addr
- else: jump to kernel_addr
*/
+/* When the boot image header has a version of 2, the structure of the boot
- image is as follows:
- +---------------------+
- | boot header | 1 page
- +---------------------+
- | kernel | n pages
- +---------------------+
- | ramdisk | m pages
- +---------------------+
- | second stage | o pages
- +---------------------+
- | recovery dtbo/acpio | p pages
- +---------------------+
- | dtb | q pages
- +---------------------+
- n = (kernel_size + page_size - 1) / page_size
- m = (ramdisk_size + page_size - 1) / page_size
- o = (second_size + page_size - 1) / page_size
- p = (recovery_dtbo_size + page_size - 1) / page_size
- q = (dtb_size + page_size - 1) / page_size
- all entities are page_size aligned in flash
- kernel, ramdisk and DTB are required (size != 0)
- recovery_dtbo/recovery_acpio is required for recovery.img in non-A/B
- devices(recovery_dtbo_size != 0)
- second is optional (second_size == 0 -> no second)
- load each element (kernel, ramdisk, second, dtb) at
- the specified physical address (kernel_addr, etc)
- If booting to recovery mode in a non-A/B device, extract recovery
- dtbo/acpio and apply the correct set of overlays on the base device tree
- depending on the hardware/product revision.
- prepare tags at tag_addr. kernel_args[] is
- appended to the kernel commandline in the tags.
- r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr
- if second_size != 0: jump to second_addr
- else: jump to kernel_addr
- */
#endif
2.22.0.770.g0f2c4a37fd-goog
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