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| author | Eugeniu Rosca <erosca@de.adit-jv.com> | 2019-04-08 17:35:27 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2019-04-24 07:27:32 -0400 |
| commit | 829ceb28215a1b6178bf690182def5ad56842f49 (patch) | |
| tree | 2dbfc2ea6f426284576ca4bb4b0d47c01ceb3a75 /common | |
| parent | 0efe2b8f9ee2f459a2161e19ae1e66918c9f5c3b (diff) | |
| download | u-boot-829ceb28215a1b6178bf690182def5ad56842f49.tar.gz u-boot-829ceb28215a1b6178bf690182def5ad56842f49.tar.xz u-boot-829ceb28215a1b6178bf690182def5ad56842f49.zip | |
image: android: allow booting lz4-compressed kernels
According to Android image format [1], kernel image resides at 1 page
offset from the boot image address. Grab the magic number from there
and allow U-Boot to handle LZ4-compressed KNL binaries instead of
hardcoding compression type to IH_COMP_NONE. Other compression types,
if needed, can be added later.
Tested on H3ULCB-KF using the image detailed in [2].
[1] Excerpt from include/android_image.h
+-----------------+
| boot header | 1 page
+-----------------+
| kernel | n pages
+-----------------+
| ramdisk | m pages
+-----------------+
| second stage | o pages
+-----------------+
[2] => iminfo 4c000000
## Checking Image at 4c000000 ...
Android image found
kernel size: 85b9d1
kernel address: 48080000
ramdisk size: 54ddbc
ramdisk addrress: 4a180000
second size: 0
second address: 48000800
tags address: 48000100
page size: 800
os_version: 1200012a (ver: 0.9.0, level: 2018.10)
name:
cmdline: buildvariant=userdebug
Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Diffstat (limited to 'common')
| -rw-r--r-- | common/bootm.c | 2 | ||||
| -rw-r--r-- | common/image-android.c | 11 |
2 files changed, 12 insertions, 1 deletions
diff --git a/common/bootm.c b/common/bootm.c index 42358b81fc..b5d37d38db 100644 --- a/common/bootm.c +++ b/common/bootm.c @@ -154,7 +154,7 @@ static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc, #ifdef CONFIG_ANDROID_BOOT_IMAGE case IMAGE_FORMAT_ANDROID: images.os.type = IH_TYPE_KERNEL; - images.os.comp = IH_COMP_NONE; + images.os.comp = android_image_get_kcomp(os_hdr); images.os.os = IH_OS_LINUX; images.os.end = android_image_get_end(os_hdr); diff --git a/common/image-android.c b/common/image-android.c index 2f38c191e9..c31dcd4465 100644 --- a/common/image-android.c +++ b/common/image-android.c @@ -8,6 +8,7 @@ #include <android_image.h> #include <malloc.h> #include <errno.h> +#include <asm/unaligned.h> #define ANDROID_IMAGE_DEFAULT_KERNEL_ADDR 0x10008000 @@ -126,6 +127,16 @@ ulong android_image_get_kload(const struct andr_img_hdr *hdr) return android_image_get_kernel_addr(hdr); } +ulong android_image_get_kcomp(const struct andr_img_hdr *hdr) +{ + const void *p = (void *)((uintptr_t)hdr + hdr->page_size); + + if (get_unaligned_le32(p) == LZ4F_MAGIC) + return IH_COMP_LZ4; + else + return IH_COMP_NONE; +} + int android_image_get_ramdisk(const struct andr_img_hdr *hdr, ulong *rd_data, ulong *rd_len) { |