[PATCH v3 09/19] android: boot: add vendor boot image to prepare for v3,v4 support
Mattijs Korpershoek
mkorpershoek at baylibre.com
Thu Feb 9 15:30:36 CET 2023
On Mon, Feb 06, 2023 at 00:50, Safae Ouajih <souajih at baylibre.com> wrote:
> Introduce vendor boot image for version 3 and 4 of boot image header.
> The vendor boot image will hold extra information about kernel, dtb
> and ramdisk.
>
> This is done to prepare for boot image version 3 and 4 support.
>
> Signed-off-by: Safae Ouajih <souajih at baylibre.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek at baylibre.com>
> ---
> boot/bootm.c | 8 +++----
> boot/image-android.c | 54 ++++++++++++++++++++++++++++----------------
> boot/image-board.c | 3 +--
> boot/image-fdt.c | 3 ++-
> cmd/abootimg.c | 4 ++--
> include/image.h | 48 ++++++++++++++++++++++++++++++---------
> 6 files changed, 81 insertions(+), 39 deletions(-)
>
> diff --git a/boot/bootm.c b/boot/bootm.c
> index 15fce8ad95..a58e6f391e 100644
> --- a/boot/bootm.c
> +++ b/boot/bootm.c
> @@ -182,11 +182,11 @@ static int bootm_find_os(struct cmd_tbl *cmdtp, int flag, int argc,
> #ifdef CONFIG_ANDROID_BOOT_IMAGE
> case IMAGE_FORMAT_ANDROID:
> images.os.type = IH_TYPE_KERNEL;
> - images.os.comp = android_image_get_kcomp(os_hdr);
> + images.os.comp = android_image_get_kcomp(os_hdr, NULL);
> images.os.os = IH_OS_LINUX;
>
> - images.os.end = android_image_get_end(os_hdr);
> - images.os.load = android_image_get_kload(os_hdr);
> + images.os.end = android_image_get_end(os_hdr, NULL);
> + images.os.load = android_image_get_kload(os_hdr, NULL);
> images.ep = images.os.load;
> ep_found = true;
> break;
> @@ -965,7 +965,7 @@ static const void *boot_get_kernel(struct cmd_tbl *cmdtp, int flag, int argc,
> #ifdef CONFIG_ANDROID_BOOT_IMAGE
> case IMAGE_FORMAT_ANDROID:
> printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
> - if (android_image_get_kernel(buf, images->verify,
> + if (android_image_get_kernel(buf, NULL, images->verify,
> os_data, os_len))
> return NULL;
> break;
> diff --git a/boot/image-android.c b/boot/image-android.c
> index 748fd212ae..f16eebff49 100644
> --- a/boot/image-android.c
> +++ b/boot/image-android.c
> @@ -66,7 +66,8 @@ static void android_boot_image_v0_v1_v2_parse_hdr(const struct andr_boot_img_hdr
> data->boot_img_total_size = end - (ulong)hdr;
> }
>
> -bool android_image_get_data(const void *boot_hdr, struct andr_image_data *data)
> +bool android_image_get_data(const void *boot_hdr, const void *vendor_boot_hdr,
> + struct andr_image_data *data)
> {
> if (!boot_hdr || !data) {
> printf("boot_hdr or data params can't be NULL\n");
> @@ -114,8 +115,10 @@ static ulong android_image_get_kernel_addr(struct andr_image_data *img_data)
>
> /**
> * android_image_get_kernel() - processes kernel part of Android boot images
> - * @hdr: Pointer to image header, which is at the start
> + * @hdr: Pointer to boot image header, which is at the start
> * of the image.
> + * @vendor_boot_img: Pointer to vendor boot image header, which is at the
> + * start of the image.
> * @verify: Checksum verification flag. Currently unimplemented.
> * @os_data: Pointer to a ulong variable, will hold os data start
> * address.
> @@ -127,14 +130,15 @@ static ulong android_image_get_kernel_addr(struct andr_image_data *img_data)
> * Return: Zero, os start address and length on success,
> * otherwise on failure.
> */
> -int android_image_get_kernel(const struct andr_boot_img_hdr_v0 *hdr, int verify,
> +int android_image_get_kernel(const struct andr_boot_img_hdr_v0 *hdr,
> + const void *vendor_boot_img, int verify,
> ulong *os_data, ulong *os_len)
> {
> struct andr_image_data img_data = {0};
> u32 kernel_addr;
> const struct legacy_img_hdr *ihdr;
>
> - if (!android_image_get_data(hdr, &img_data))
> + if (!android_image_get_data(hdr, vendor_boot_img, &img_data))
> return -EINVAL;
>
> kernel_addr = android_image_get_kernel_addr(&img_data);
> @@ -201,11 +205,12 @@ bool is_android_boot_image_header(const struct andr_boot_img_hdr_v0 *hdr)
> return !memcmp(ANDR_BOOT_MAGIC, hdr, ANDR_BOOT_MAGIC_SIZE);
> }
>
> -ulong android_image_get_end(const struct andr_boot_img_hdr_v0 *hdr)
> +ulong android_image_get_end(const struct andr_boot_img_hdr_v0 *hdr,
> + const void *vendor_boot_img)
> {
> struct andr_image_data img_data;
>
> - if (!android_image_get_data(hdr, &img_data))
> + if (!android_image_get_data(hdr, vendor_boot_img, &img_data))
> return -EINVAL;
>
> if (img_data.header_version > 2)
> @@ -214,22 +219,24 @@ ulong android_image_get_end(const struct andr_boot_img_hdr_v0 *hdr)
> return img_data.boot_img_total_size;
> }
>
> -ulong android_image_get_kload(const struct andr_boot_img_hdr_v0 *hdr)
> +ulong android_image_get_kload(const struct andr_boot_img_hdr_v0 *hdr,
> + const void *vendor_boot_img)
> {
> struct andr_image_data img_data;
>
> - if (!android_image_get_data(hdr, &img_data))
> + if (!android_image_get_data(hdr, vendor_boot_img, &img_data))
> return -EINVAL;
>
> return android_image_get_kernel_addr(&img_data);
> }
>
> -ulong android_image_get_kcomp(const struct andr_boot_img_hdr_v0 *hdr)
> +ulong android_image_get_kcomp(const struct andr_boot_img_hdr_v0 *hdr,
> + const void *vendor_boot_img)
> {
> struct andr_image_data img_data;
> const void *p;
>
> - if (!android_image_get_data(hdr, &img_data))
> + if (!android_image_get_data(hdr, vendor_boot_img, &img_data))
> return -EINVAL;
>
> p = (const void *)img_data.kernel_ptr;
> @@ -242,11 +249,11 @@ ulong android_image_get_kcomp(const struct andr_boot_img_hdr_v0 *hdr)
> }
>
> int android_image_get_ramdisk(const struct andr_boot_img_hdr_v0 *hdr,
> - ulong *rd_data, ulong *rd_len)
> + const void *vendor_boot_img, ulong *rd_data, ulong *rd_len)
> {
> struct andr_image_data img_data = {0};
>
> - if (!android_image_get_data(hdr, &img_data))
> + if (!android_image_get_data(hdr, vendor_boot_img, &img_data))
> return -EINVAL;
>
> if (!img_data.ramdisk_size) {
> @@ -268,7 +275,7 @@ int android_image_get_second(const struct andr_boot_img_hdr_v0 *hdr,
> {
> struct andr_image_data img_data;
>
> - if (!android_image_get_data(hdr, &img_data))
> + if (!android_image_get_data(hdr, NULL, &img_data))
> return -EINVAL;
>
> if (!img_data.second_size) {
> @@ -348,11 +355,12 @@ exit:
> /**
> * android_image_get_dtb_img_addr() - Get the address of DTB area in boot image.
> * @hdr_addr: Boot image header address
> + * @vhdr_addr: Vendor Boot image header address
> * @addr: Will contain the address of DTB area in boot image
> *
> * Return: true on success or false on fail.
> */
> -static bool android_image_get_dtb_img_addr(ulong hdr_addr, ulong *addr)
> +static bool android_image_get_dtb_img_addr(ulong hdr_addr, ulong vhdr_addr, ulong *addr)
> {
> const struct andr_boot_img_hdr_v0 *hdr;
> ulong dtb_img_addr;
> @@ -395,6 +403,7 @@ exit:
> /**
> * android_image_get_dtb_by_index() - Get address and size of blob in DTB area.
> * @hdr_addr: Boot image header address
> + * @vendor_boot_img: Pointer to vendor boot image header, which is at the start of the image.
> * @index: Index of desired DTB in DTB area (starting from 0)
> * @addr: If not NULL, will contain address to specified DTB
> * @size: If not NULL, will contain size of specified DTB
> @@ -404,17 +413,24 @@ exit:
> *
> * Return: true on success or false on error.
> */
> -bool android_image_get_dtb_by_index(ulong hdr_addr, u32 index, ulong *addr,
> - u32 *size)
> +bool android_image_get_dtb_by_index(ulong hdr_addr, ulong vendor_boot_img,
> + u32 index, ulong *addr, u32 *size)
> {
> struct andr_image_data img_data;
> const struct andr_boot_img_hdr_v0 *hdr;
> + const struct andr_vnd_boot_img_hdr *vhdr;
>
> hdr = map_sysmem(hdr_addr, sizeof(*hdr));
> - if (!android_image_get_data(hdr, &img_data)) {
> + if (vendor_boot_img != -1)
> + vhdr = map_sysmem(vendor_boot_img, sizeof(*vhdr));
> + if (!android_image_get_data(hdr, vhdr, &img_data)) {
> + if (vendor_boot_img != -1)
> + unmap_sysmem(vhdr);
> unmap_sysmem(hdr);
> return false;
> }
> + if (vendor_boot_img != -1)
> + unmap_sysmem(vhdr);
> unmap_sysmem(hdr);
>
> ulong dtb_img_addr; /* address of DTB part in boot image */
> @@ -422,7 +438,7 @@ bool android_image_get_dtb_by_index(ulong hdr_addr, u32 index, ulong *addr,
> ulong dtb_addr; /* address of DTB blob with specified index */
> u32 i; /* index iterator */
>
> - android_image_get_dtb_img_addr(hdr_addr, &dtb_img_addr);
> + android_image_get_dtb_img_addr(hdr_addr, vendor_boot_img, &dtb_img_addr);
> /* Check if DTB area of boot image is in DTBO format */
> if (android_dt_check_header(dtb_img_addr)) {
> return android_dt_get_fdt_by_index(dtb_img_addr, index, addr,
> @@ -578,7 +594,7 @@ bool android_image_print_dtb_contents(ulong hdr_addr)
> ulong dtb_addr; /* address of DTB blob with specified index */
> u32 i; /* index iterator */
>
> - res = android_image_get_dtb_img_addr(hdr_addr, &dtb_img_addr);
> + res = android_image_get_dtb_img_addr(hdr_addr, 0, &dtb_img_addr);
> if (!res)
> return false;
>
> diff --git a/boot/image-board.c b/boot/image-board.c
> index 9295b6d0c8..b6c9bbe8f5 100644
> --- a/boot/image-board.c
> +++ b/boot/image-board.c
> @@ -428,8 +428,7 @@ static int select_ramdisk(struct bootm_headers *images, const char *select, u8 a
> if (IS_ENABLED(CONFIG_ANDROID_BOOT_IMAGE)) {
> void *ptr = map_sysmem(images->os.start, 0);
> int ret;
> -
> - ret = android_image_get_ramdisk(ptr, rd_datap, rd_lenp);
> + ret = android_image_get_ramdisk(ptr, NULL, rd_datap, rd_lenp);
> unmap_sysmem(ptr);
> if (ret)
> return ret;
> diff --git a/boot/image-fdt.c b/boot/image-fdt.c
> index 1181cb60f0..f270d00a5f 100644
> --- a/boot/image-fdt.c
> +++ b/boot/image-fdt.c
> @@ -536,7 +536,8 @@ int boot_get_fdt(int flag, int argc, char *const argv[], uint8_t arch,
> * 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)) {
> + if (android_image_get_dtb_by_index((ulong)hdr, 0,
> + dtb_idx, &fdt_addr, &fdt_size)) {
> fdt_blob = (char *)map_sysmem(fdt_addr, 0);
> if (fdt_check_header(fdt_blob))
> goto no_fdt;
> diff --git a/cmd/abootimg.c b/cmd/abootimg.c
> index f04a7c7c8e..4d6cf0fa3e 100644
> --- a/cmd/abootimg.c
> +++ b/cmd/abootimg.c
> @@ -72,7 +72,7 @@ static int abootimg_get_dtb_load_addr(int argc, char *const argv[])
> const struct andr_boot_img_hdr_v0 *hdr;
>
> hdr = map_sysmem(abootimg_addr(), sizeof(*hdr));
> - if (!android_image_get_data(hdr, &img_data)) {
> + if (!android_image_get_data(hdr, NULL, &img_data)) {
> unmap_sysmem(hdr);
> return CMD_RET_FAILURE;
> }
> @@ -119,7 +119,7 @@ static int abootimg_get_dtb_by_index(int argc, char *const argv[])
> return CMD_RET_FAILURE;
> }
>
> - if (!android_image_get_dtb_by_index(abootimg_addr(), num,
> + if (!android_image_get_dtb_by_index(abootimg_addr(), 0, num,
> &addr, &size)) {
> return CMD_RET_FAILURE;
> }
> diff --git a/include/image.h b/include/image.h
> index 4bf6c98ced..f84c03f08f 100644
> --- a/include/image.h
> +++ b/include/image.h
> @@ -1736,16 +1736,19 @@ struct cipher_algo *image_get_cipher_algo(const char *full_name);
> struct andr_image_data;
>
> /**
> - * android_image_get_data() - Parse Android boot image
> + * android_image_get_data() - Parse Android boot images
> *
> - * This is used to parse boot image header into andr_image_data
> - * generic structure.
> + * This is used to parse boot and vendor-boot header into
> + * andr_image_data generic structure.
> *
> * @boot_hdr: Pointer to boot image header
> + * @vendor_boot_hdr: Pointer to vendor boot image header
> * @data: Pointer to generic boot format structure
> * Return: true if succeeded, false otherwise
> */
> -bool android_image_get_data(const void *boot_hdr, struct andr_image_data *data);
> +bool android_image_get_data(const void *boot_hdr, const void *vendor_boot_hdr,
> + struct andr_image_data *data);
> +
> struct andr_boot_img_hdr_v0;
>
> /**
> @@ -1756,6 +1759,7 @@ struct andr_boot_img_hdr_v0;
> *
> * @hdr: Pointer to image header, which is at the start
> * of the image.
> + * @vendor_boot_img : Pointer to vendor boot image header
> * @verify: Checksum verification flag. Currently unimplemented.
> * @os_data: Pointer to a ulong variable, will hold os data start
> * address.
> @@ -1763,7 +1767,8 @@ struct andr_boot_img_hdr_v0;
> * Return: Zero, os start address and length on success,
> * otherwise on failure.
> */
> -int android_image_get_kernel(const struct andr_boot_img_hdr_v0 *hdr, int verify,
> +int android_image_get_kernel(const struct andr_boot_img_hdr_v0 *hdr,
> + const void *vendor_boot_img, int verify,
> ulong *os_data, ulong *os_len);
>
> /**
> @@ -1772,12 +1777,13 @@ int android_image_get_kernel(const struct andr_boot_img_hdr_v0 *hdr, int verify,
> * This extracts the load address of the ramdisk and its size
> *
> * @hdr: Pointer to image header
> + * @vendor_boot_img : Pointer to vendor boot image header
> * @rd_data: Pointer to a ulong variable, will hold ramdisk address
> * @rd_len: Pointer to a ulong variable, will hold ramdisk length
> * Return: 0 if succeeded, -1 if ramdisk size is 0
> */
> int android_image_get_ramdisk(const struct andr_boot_img_hdr_v0 *hdr,
> - ulong *rd_data, ulong *rd_len);
> + const void *vendor_boot_img, ulong *rd_data, ulong *rd_len);
>
> /**
> * android_image_get_second() - Extracts the secondary bootloader address
> @@ -1793,8 +1799,22 @@ int android_image_get_ramdisk(const struct andr_boot_img_hdr_v0 *hdr,
> int android_image_get_second(const struct andr_boot_img_hdr_v0 *hdr,
> ulong *second_data, ulong *second_len);
> bool android_image_get_dtbo(ulong hdr_addr, ulong *addr, u32 *size);
> -bool android_image_get_dtb_by_index(ulong hdr_addr, u32 index, ulong *addr,
> - u32 *size);
> +
> +/**
> + * android_image_get_dtb_by_index() - Get address and size of blob in DTB area.
> + * @hdr_addr: Boot image header address
> + * @vendor_boot_img: Pointer to vendor boot image header, which is at the start of the image.
> + * @index: Index of desired DTB in DTB area (starting from 0)
> + * @addr: If not NULL, will contain address to specified DTB
> + * @size: If not NULL, will contain size of specified DTB
> + *
> + * Get the address and size of DTB blob by its index in DTB area of Android
> + * Boot Image in RAM.
> + *
> + * Return: true on success or false on error.
> + */
> +bool android_image_get_dtb_by_index(ulong hdr_addr, ulong vendor_boot_img,
> + u32 index, ulong *addr, u32 *size);
>
> /**
> * android_image_get_end() - Get the end of Android boot image
> @@ -1802,9 +1822,11 @@ bool android_image_get_dtb_by_index(ulong hdr_addr, u32 index, ulong *addr,
> * This returns the end address of Android boot image address
> *
> * @hdr: Pointer to image header
> + * @vendor_boot_img : Pointer to vendor boot image header
> * Return: The end address of Android boot image
> */
> -ulong android_image_get_end(const struct andr_boot_img_hdr_v0 *hdr);
> +ulong android_image_get_end(const struct andr_boot_img_hdr_v0 *hdr,
> + const void *vendor_boot_img);
>
> /**
> * android_image_get_kload() - Get the kernel load address
> @@ -1813,9 +1835,11 @@ ulong android_image_get_end(const struct andr_boot_img_hdr_v0 *hdr);
> * from the boot image header or the "kernel_addr_r" environment variable
> *
> * @hdr: Pointer to image header
> + * @vendor_boot_img : Pointer to vendor boot image header
> * Return: The kernel load address
> */
> -ulong android_image_get_kload(const struct andr_boot_img_hdr_v0 *hdr);
> +ulong android_image_get_kload(const struct andr_boot_img_hdr_v0 *hdr,
> + const void *vendor_boot_img);
>
> /**
> * android_image_get_kcomp() - Get kernel compression type
> @@ -1823,9 +1847,11 @@ ulong android_image_get_kload(const struct andr_boot_img_hdr_v0 *hdr);
> * This gets the kernel compression type from the boot image header
> *
> * @hdr: Pointer to image header
> + * @vendor_boot_img : Pointer to vendor boot image header
> * Return: Kernel compression type
> */
> -ulong android_image_get_kcomp(const struct andr_boot_img_hdr_v0 *hdr);
> +ulong android_image_get_kcomp(const struct andr_boot_img_hdr_v0 *hdr,
> + const void *vendor_boot_img);
>
> /**
> * android_print_contents() - Prints out the contents of the Android format image
> --
> 2.34.1
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