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find dtb in android boot image with header version 2 during bootm

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This patch is about bootm process, android boot image and device tree.

Android 10 updates the boot image header to version 2,
which includes a section to store the device tree blob (DTB) image.

include/android_image.h has updated the struct andr_img_hdr,
but not used in bootm process. This patch avoid reporting
"Device tree not found or missing FDT support"
when bootm a correctly constructed android boot image.

Signed-off-by: chenshuo <chenshuo@eswin.com>
This commit is contained in:
chenshuo 2020-07-20 08:48:15 +08:00 committed by Simon Glass
parent 6724a37a7c
commit 6e31458435
1 changed files with 13 additions and 3 deletions
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16
common/image-fdt.c
View file

@ -465,10 +465,20 @@ int boot_get_fdt(int flag, int argc, char *const argv[], uint8_t arch,
#ifdef CONFIG_ANDROID_BOOT_IMAGE
} else if (genimg_get_format(buf) == IMAGE_FORMAT_ANDROID) {
struct andr_img_hdr *hdr = buf;
ulong fdt_data, fdt_len;
ulong fdt_data, fdt_len;
u32 fdt_size, dtb_idx;
/*
* Firstly check if this android boot image has dtb field.
*/
dtb_idx = (u32)env_get_ulong("adtb_idx", 10, 0);
if (android_image_get_dtb_by_index((ulong)hdr, dtb_idx, &fdt_addr, &fdt_size)) {
fdt_blob = (char *)map_sysmem(fdt_addr, 0);
if (fdt_check_header(fdt_blob))
goto no_fdt;
if (!android_image_get_second(hdr, &fdt_data, &fdt_len) &&
!fdt_check_header((char *)fdt_data)) {
debug("## Using FDT in Android image dtb area with idx %u\n", dtb_idx);
} else if (!android_image_get_second(hdr, &fdt_data, &fdt_len) &&
!fdt_check_header((char *)fdt_data)) {
fdt_blob = (char *)fdt_data;
if (fdt_totalsize(fdt_blob) != fdt_len)
goto error;