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path: root/boot/bootmeth_android.c
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Diffstat (limited to 'boot/bootmeth_android.c')
-rw-r--r--boot/bootmeth_android.c104
1 files changed, 76 insertions, 28 deletions
diff --git a/boot/bootmeth_android.c b/boot/bootmeth_android.c
index 19b1f2c377b..3a5144aaa3b 100644
--- a/boot/bootmeth_android.c
+++ b/boot/bootmeth_android.c
@@ -29,6 +29,7 @@
#define BCB_PART_NAME "misc"
#define BOOT_PART_NAME "boot"
#define VENDOR_BOOT_PART_NAME "vendor_boot"
+#define SLOT_LEN 2
/**
* struct android_priv - Private data
@@ -42,8 +43,10 @@
*/
struct android_priv {
enum android_boot_mode boot_mode;
- char slot[2];
+ char *slot;
u32 header_version;
+ u32 boot_img_size;
+ u32 vendor_boot_img_size;
};
static int android_check(struct udevice *dev, struct bootflow_iter *iter)
@@ -71,7 +74,11 @@ static int scan_boot_part(struct udevice *blk, struct android_priv *priv)
char *buf;
int ret;
- sprintf(partname, BOOT_PART_NAME "_%s", priv->slot);
+ if (priv->slot)
+ sprintf(partname, BOOT_PART_NAME "_%s", priv->slot);
+ else
+ sprintf(partname, BOOT_PART_NAME);
+
ret = part_get_info_by_name(desc, partname, &partition);
if (ret < 0)
return log_msg_ret("part info", ret);
@@ -93,7 +100,13 @@ static int scan_boot_part(struct udevice *blk, struct android_priv *priv)
return log_msg_ret("header", -ENOENT);
}
+ if (!android_image_get_bootimg_size(buf, &priv->boot_img_size)) {
+ free(buf);
+ return log_msg_ret("get bootimg size", -EINVAL);
+ }
+
priv->header_version = ((struct andr_boot_img_hdr_v0 *)buf)->header_version;
+
free(buf);
return 0;
@@ -108,7 +121,11 @@ static int scan_vendor_boot_part(struct udevice *blk, struct android_priv *priv)
char *buf;
int ret;
- sprintf(partname, VENDOR_BOOT_PART_NAME "_%s", priv->slot);
+ if (priv->slot)
+ sprintf(partname, VENDOR_BOOT_PART_NAME "_%s", priv->slot);
+ else
+ sprintf(partname, VENDOR_BOOT_PART_NAME);
+
ret = part_get_info_by_name(desc, partname, &partition);
if (ret < 0)
return log_msg_ret("part info", ret);
@@ -129,6 +146,12 @@ static int scan_vendor_boot_part(struct udevice *blk, struct android_priv *priv)
free(buf);
return log_msg_ret("header", -ENOENT);
}
+
+ if (!android_image_get_vendor_bootimg_size(buf, &priv->vendor_boot_img_size)) {
+ free(buf);
+ return log_msg_ret("get vendor bootimg size", -EINVAL);
+ }
+
free(buf);
return 0;
@@ -142,6 +165,11 @@ static int android_read_slot_from_bcb(struct bootflow *bflow, bool decrement)
char slot_suffix[3];
int ret;
+ if (!CONFIG_IS_ENABLED(ANDROID_AB)) {
+ priv->slot = NULL;
+ return 0;
+ }
+
ret = part_get_info_by_name(desc, BCB_PART_NAME, &misc);
if (ret < 0)
return log_msg_ret("part", ret);
@@ -150,6 +178,7 @@ static int android_read_slot_from_bcb(struct bootflow *bflow, bool decrement)
if (ret < 0)
return log_msg_ret("slot", ret);
+ priv->slot = malloc(SLOT_LEN);
priv->slot[0] = BOOT_SLOT_NAME(ret);
priv->slot[1] = '\0';
@@ -259,16 +288,12 @@ static int android_read_bootflow(struct udevice *dev, struct bootflow *bflow)
goto free_priv;
}
- if (priv->header_version != 4) {
- log_debug("only boot.img v4 is supported %u\n", priv->header_version);
- ret = -EINVAL;
- goto free_priv;
- }
-
- ret = scan_vendor_boot_part(bflow->blk, priv);
- if (ret < 0) {
- log_debug("scan vendor_boot failed: err=%d\n", ret);
- goto free_priv;
+ if (priv->header_version >= 3) {
+ ret = scan_vendor_boot_part(bflow->blk, priv);
+ if (ret < 0) {
+ log_debug("scan vendor_boot failed: err=%d\n", ret);
+ goto free_priv;
+ }
}
/*
@@ -278,7 +303,7 @@ static int android_read_bootflow(struct udevice *dev, struct bootflow *bflow)
configure_serialno(bflow);
configure_bootloader_version(bflow);
- if (priv->boot_mode == ANDROID_BOOT_MODE_NORMAL) {
+ if (priv->boot_mode == ANDROID_BOOT_MODE_NORMAL && priv->slot) {
ret = bootflow_cmdline_set_arg(bflow, "androidboot.force_normal_boot",
"1", false);
if (ret < 0) {
@@ -319,28 +344,44 @@ static int android_read_file(struct udevice *dev, struct bootflow *bflow,
* @blk: Block device to read
* @name: Partition name to read
* @slot: Nul-terminated slot suffixed to partition name ("a\0" or "b\0")
+ * @image_size: Image size in bytes used when reading the partition
* @addr: Address where the partition content is loaded into
* Return: 0 if OK, negative errno on failure.
*/
static int read_slotted_partition(struct blk_desc *desc, const char *const name,
- const char slot[2], ulong addr)
+ const char slot[2], ulong image_size, ulong addr)
{
struct disk_partition partition;
char partname[PART_NAME_LEN];
+ size_t partname_len;
+ ulong num_blks = DIV_ROUND_UP(image_size, desc->blksz);
int ret;
u32 n;
- /* Ensure name fits in partname it should be: <name>_<slot>\0 */
- if (strlen(name) > (PART_NAME_LEN - 2 - 1))
+ /*
+ * Ensure name fits in partname.
+ * For A/B, it should be <name>_<slot>\0
+ * For non A/B, it should be <name>\0
+ */
+ if (CONFIG_IS_ENABLED(ANDROID_AB))
+ partname_len = PART_NAME_LEN - 2 - 1;
+ else
+ partname_len = PART_NAME_LEN - 1;
+
+ if (strlen(name) > partname_len)
return log_msg_ret("name too long", -EINVAL);
- sprintf(partname, "%s_%s", name, slot);
+ if (slot)
+ sprintf(partname, "%s_%s", name, slot);
+ else
+ sprintf(partname, "%s", name);
+
ret = part_get_info_by_name(desc, partname, &partition);
if (ret < 0)
return log_msg_ret("part", ret);
- n = blk_dread(desc, partition.start, partition.size, map_sysmem(addr, 0));
- if (n < partition.size)
+ n = blk_dread(desc, partition.start, num_blks, map_sysmem(addr, 0));
+ if (n < num_blks)
return log_msg_ret("part read", -EIO);
return 0;
@@ -386,7 +427,7 @@ static int run_avb_verification(struct bootflow *bflow)
AvbSlotVerifyData *out_data;
enum avb_boot_state boot_state;
char *extra_args;
- char slot_suffix[3];
+ char slot_suffix[3] = "";
bool unlocked = false;
int ret;
@@ -394,7 +435,8 @@ static int run_avb_verification(struct bootflow *bflow)
if (!avb_ops)
return log_msg_ret("avb ops", -ENOMEM);
- sprintf(slot_suffix, "_%s", priv->slot);
+ if (priv->slot)
+ sprintf(slot_suffix, "_%s", priv->slot);
ret = avb_ops->read_is_device_unlocked(avb_ops, &unlocked);
if (ret != AVB_IO_RESULT_OK)
@@ -472,16 +514,22 @@ static int boot_android_normal(struct bootflow *bflow)
if (ret < 0)
return log_msg_ret("read slot", ret);
- ret = read_slotted_partition(desc, "boot", priv->slot, loadaddr);
+ ret = read_slotted_partition(desc, "boot", priv->slot, priv->boot_img_size,
+ loadaddr);
if (ret < 0)
return log_msg_ret("read boot", ret);
- ret = read_slotted_partition(desc, "vendor_boot", priv->slot, vloadaddr);
- if (ret < 0)
- return log_msg_ret("read vendor_boot", ret);
-
+ if (priv->header_version >= 3) {
+ ret = read_slotted_partition(desc, "vendor_boot", priv->slot,
+ priv->vendor_boot_img_size, vloadaddr);
+ if (ret < 0)
+ return log_msg_ret("read vendor_boot", ret);
+ set_avendor_bootimg_addr(vloadaddr);
+ }
set_abootimg_addr(loadaddr);
- set_avendor_bootimg_addr(vloadaddr);
+
+ if (priv->slot)
+ free(priv->slot);
ret = bootm_boot_start(loadaddr, bflow->cmdline);
generated by cgit v1.2.3 (git 2.0.4) at 2025-07-20 01:42:05 +0000