diff --git a/boot/Kconfig b/boot/Kconfig index 1f5ecb60c77..a671d78e570 100644 --- a/boot/Kconfig +++ b/boot/Kconfig @@ -11,6 +11,17 @@ config ANDROID_BOOT_IMAGE This enables support for booting images which use the Android image format header. +config ANDROID_BOOT_IMAGE_IGNORE_BLOB_ADDR + bool "Android Boot Image ignore addr" + default n + help + This ignore kernel/ramdisk load addr specified in androidboot header. + + There is a concern on exposing the whole memory to image loading is + dangerous. Also, since it's not always possible to change the load + addr by repacking the boot.img (mainly due to AVB signature mismatch), + we need a way to use kernel_addr_r and ramdisk_addr_r. + config TIMESTAMP bool "Show image date and time when displaying image information" default y if CMD_DATE diff --git a/boot/image-android.c b/boot/image-android.c index 459cdb8456c..14cf611cee5 100644 --- a/boot/image-android.c +++ b/boot/image-android.c @@ -268,7 +268,8 @@ static ulong android_image_get_kernel_addr(struct andr_image_data *img_data, * * Otherwise, we will return the actual value set by the user. */ - if (img_data->kernel_addr == ANDROID_IMAGE_DEFAULT_KERNEL_ADDR) { + if (img_data->kernel_addr == ANDROID_IMAGE_DEFAULT_KERNEL_ADDR || + IS_ENABLED(CONFIG_ANDROID_BOOT_IMAGE_IGNORE_BLOB_ADDR)) { if (comp == IH_COMP_NONE) return img_data->kernel_ptr; return env_get_ulong("kernel_addr_r", 16, 0); @@ -464,7 +465,8 @@ int android_image_get_ramdisk(const void *hdr, const void *vendor_boot_img, */ if (img_data.header_version > 2) { /* Ramdisk can't be used in-place, copy it to ramdisk_addr_r */ - if (img_data.ramdisk_addr == ANDROID_IMAGE_DEFAULT_RAMDISK_ADDR) { + if (img_data.ramdisk_addr == ANDROID_IMAGE_DEFAULT_RAMDISK_ADDR || + IS_ENABLED(CONFIG_ANDROID_BOOT_IMAGE_IGNORE_BLOB_ADDR)) { ramdisk_ptr = env_get_ulong("ramdisk_addr_r", 16, 0); if (!ramdisk_ptr) { printf("Invalid ramdisk_addr_r to copy ramdisk into\n"); @@ -489,7 +491,8 @@ int android_image_get_ramdisk(const void *hdr, const void *vendor_boot_img, /* Ramdisk can be used in-place, use current ptr */ if (img_data.ramdisk_addr == 0 || img_data.ramdisk_addr == ANDROID_IMAGE_DEFAULT_RAMDISK_ADDR || - img_data.ramdisk_addr == img_data.kernel_addr) { + img_data.ramdisk_addr == img_data.kernel_addr || + IS_ENABLED(CONFIG_ANDROID_BOOT_IMAGE_IGNORE_BLOB_ADDR)) { *rd_data = img_data.ramdisk_ptr; } else { ramdisk_ptr = img_data.ramdisk_addr;