#include #include "format.h" #ifndef _BOOT_IMAGE_H_ #define _BOOT_IMAGE_H_ typedef struct boot_img_hdr { char magic[8]; uint32_t kernel_size; /* size in bytes */ uint32_t kernel_addr; /* physical load addr */ uint32_t ramdisk_size; /* size in bytes */ uint32_t ramdisk_addr; /* physical load addr */ uint32_t second_size; /* size in bytes */ uint32_t second_addr; /* physical load addr */ uint32_t tags_addr; /* physical addr for kernel tags */ uint32_t page_size; /* flash page size we assume */ uint32_t extra_size; /* extra blob size in bytes */ /* operating system version and security patch level; for * version "A.B.C" and patch level "Y-M-D": * ver = A << 14 | B << 7 | C (7 bits for each of A, B, C) * lvl = ((Y - 2000) & 127) << 4 | M (7 bits for Y, 4 bits for M) * os_version = ver << 11 | lvl */ uint32_t os_version; char name[16]; /* asciiz product name */ char cmdline[512]; char id[32]; /* timestamp / checksum / sha1 / etc */ /* Supplemental command line data; kept here to maintain * binary compatibility with older versions of mkbootimg */ char extra_cmdline[1024]; } __attribute__((packed)) boot_img_hdr ; typedef struct pxa_boot_img_hdr { char magic[8]; uint32_t kernel_size; /* size in bytes */ uint32_t kernel_addr; /* physical load addr */ uint32_t ramdisk_size; /* size in bytes */ uint32_t ramdisk_addr; /* physical load addr */ uint32_t second_size; /* size in bytes */ uint32_t second_addr; /* physical load addr */ uint32_t extra_size; /* extra blob size in bytes */ uint32_t unknown; /* unknown value */ uint32_t tags_addr; /* physical addr for kernel tags */ uint32_t page_size; /* flash page size we assume */ char name[24]; /* asciiz product name */ char cmdline[512]; char id[32]; /* timestamp / checksum / sha1 / etc */ /* Supplemental command line data; kept here to maintain * binary compatibility with older versions of mkbootimg */ char extra_cmdline[1024]; } __attribute__((packed)) pxa_boot_img_hdr; /* ** +-----------------+ ** | boot header | 1 page ** +-----------------+ ** | kernel | n pages ** +-----------------+ ** | ramdisk | m pages ** +-----------------+ ** | second stage | o pages ** +-----------------+ ** | extra blob | p pages ** +-----------------+ ** ** n = (kernel_size + page_size - 1) / page_size ** m = (ramdisk_size + page_size - 1) / page_size ** o = (second_size + page_size - 1) / page_size ** p = (extra_size + page_size - 1) / page_size ** ** 0. all entities are page_size aligned in flash ** 1. kernel and ramdisk are required (size != 0) ** 2. second is optional (second_size == 0 -> no second) ** 3. load each element (kernel, ramdisk, second) at ** the specified physical address (kernel_addr, etc) ** 4. prepare tags at tag_addr. kernel_args[] is ** appended to the kernel commandline in the tags. ** 5. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr ** 6. if second_size != 0: jump to second_addr ** else: jump to kernel_addr */ typedef struct mtk_hdr { uint32_t magic; /* MTK magic */ uint32_t size; /* Size of the content */ char name[32]; /* The type of the header */ } __attribute__((packed)) mtk_hdr; typedef struct dhtb_hdr { char magic[8]; /* DHTB magic */ char checksum[40]; /* Payload SHA256, whole image + SEANDROIDENFORCE + 0xFFFFFFFF */ uint32_t size; /* Payload size, whole image + SEANDROIDENFORCE + 0xFFFFFFFF */ } __attribute__((packed)) dhtb_hdr; typedef struct blob_hdr { char secure_magic[20]; /* "-SIGNED-BY-SIGNBLOB-" */ uint32_t datalen; /* 0x00000000 */ uint32_t signature; /* 0x00000000 */ char magic[16]; /* "MSM-RADIO-UPDATE" */ uint32_t hdr_version; /* 0x00010000 */ uint32_t hdr_size; /* Size of header */ uint32_t part_offset; /* Same as size */ uint32_t num_parts; /* Number of partitions */ uint32_t unknown[7]; /* All 0x00000000 */ char name[4]; /* Name of partition */ uint32_t offset; /* offset in blob where this partition starts */ uint32_t size; /* Size of data */ uint32_t version; /* 0x00000001 */ } __attribute__((packed)) blob_hdr; // Flags #define MTK_KERNEL 0x0001 #define MTK_RAMDISK 0x0002 #define CHROMEOS_FLAG 0x0004 #define PXA_FLAG 0x0008 #define DHTB_FLAG 0x0010 #define SEANDROID_FLAG 0x0020 #define LG_BUMP_FLAG 0x0040 #define SHA256_FLAG 0x0080 #define BLOB_FLAG 0x0100 #define NOOKHD_FLAG 0x0200 #define ACCLAIM_FLAG 0x0400 typedef struct boot_img { // Memory map of the whole image void *map_addr; size_t map_size; // Headers void *hdr; /* Either boot_img_hdr or pxa_boot_img_hdr */ mtk_hdr *k_hdr; /* MTK kernel header */ mtk_hdr *r_hdr; /* MTK ramdisk header */ blob_hdr *b_hdr; /* Tegra blob header */ // Flags to indicate the state of current boot image uint16_t flags; // The format of kernel and ramdisk format_t k_fmt; format_t r_fmt; // Pointer to dtb that is appended after kernel void *dtb; uint32_t dt_size; // Pointer to end of image void *tail; size_t tail_size; // Pointers to blocks defined in header void *kernel; void *ramdisk; void *second; void *extra; } boot_img; #endif