From fc493b5427e5cea739420800d54dff322548d563 Mon Sep 17 00:00:00 2001 From: Safae Ouajih Date: Mon, 6 Feb 2023 00:50:07 +0100 Subject: android: boot: kcomp: support andr_image_data commit f48efa0edb6f65b2c382209871df7c9b61a905e2 upstream. andr_image_data structure is used as a global representation of boot image header structure. Introduce this new structure to support all boot header versions : v0,v1.v2.v3.v4 and to support v3 and v4 while maitaining support for v0,v1,v2. The need of using andr_image_data comes from the change of header structure in both version 3 and 4. Rework android_image_get_kcomp() to support this new struct. Signed-off-by: Safae Ouajih Reviewed-by: Simon Glass Reviewed-by: Mattijs Korpershoek Tested-by: Mattijs Korpershoek Signed-off-by: Praneeth Bajjuri --- boot/image-android.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 74 insertions(+), 1 deletion(-) (limited to 'boot') diff --git a/boot/image-android.c b/boot/image-android.c index ac7cb479c1..ea05c1814f 100644 --- a/boot/image-android.c +++ b/boot/image-android.c @@ -18,6 +18,74 @@ static char andr_tmp_str[ANDR_BOOT_ARGS_SIZE + 1]; +static void android_boot_image_v0_v1_v2_parse_hdr(const struct andr_boot_img_hdr_v0 *hdr, + struct andr_image_data *data) +{ + ulong end; + + data->image_name = hdr->name; + data->kcmdline = hdr->cmdline; + data->kernel_addr = hdr->kernel_addr; + data->ramdisk_addr = hdr->ramdisk_addr; + data->header_version = hdr->header_version; + data->dtb_load_addr = hdr->dtb_addr; + + end = (ulong)hdr; + + /* + * The header takes a full page, the remaining components are aligned + * on page boundary + */ + + end += hdr->page_size; + + data->kernel_ptr = end; + data->kernel_size = hdr->kernel_size; + end += ALIGN(hdr->kernel_size, hdr->page_size); + + data->ramdisk_ptr = end; + data->ramdisk_size = hdr->ramdisk_size; + end += ALIGN(hdr->ramdisk_size, hdr->page_size); + + data->second_ptr = end; + data->second_size = hdr->second_size; + end += ALIGN(hdr->second_size, hdr->page_size); + + if (hdr->header_version >= 1) { + data->recovery_dtbo_ptr = end; + data->recovery_dtbo_size = hdr->recovery_dtbo_size; + end += ALIGN(hdr->recovery_dtbo_size, hdr->page_size); + } + + if (hdr->header_version >= 2) { + data->dtb_ptr = end; + data->dtb_size = hdr->dtb_size; + end += ALIGN(hdr->dtb_size, hdr->page_size); + } + + data->boot_img_total_size = end - (ulong)hdr; +} + +bool android_image_get_data(const void *boot_hdr, struct andr_image_data *data) +{ + if (!boot_hdr || !data) { + printf("boot_hdr or data params can't be NULL\n"); + return false; + } + + if (!is_android_boot_image_header(boot_hdr)) { + printf("Incorrect boot image header\n"); + return false; + } + + if (((struct andr_boot_img_hdr_v0 *)boot_hdr)->header_version > 2) + printf("Only boot image header version 2 and below are supported\n"); + else + android_boot_image_v0_v1_v2_parse_hdr(boot_hdr, data); + + return true; +} + static ulong android_image_get_kernel_addr(const struct andr_boot_img_hdr_v0 *hdr) { /* @@ -157,8 +225,13 @@ ulong android_image_get_kload(const struct andr_boot_img_hdr_v0 *hdr) ulong android_image_get_kcomp(const struct andr_boot_img_hdr_v0 *hdr) { - const void *p = (void *)((uintptr_t)hdr + hdr->page_size); + struct andr_image_data img_data; + const void *p; + + if (!android_image_get_data(hdr, &img_data)) + return -EINVAL; + p = (const void *)img_data.kernel_ptr; if (image_get_magic((struct legacy_img_hdr *)p) == IH_MAGIC) return image_get_comp((struct legacy_img_hdr *)p); else if (get_unaligned_le32(p) == LZ4F_MAGIC) -- cgit v1.2.3