| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright (c) 2011 Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| */ |
| |
| #include <common.h> |
| #include <image.h> |
| #include <android_image.h> |
| #include <malloc.h> |
| #include <errno.h> |
| static const unsigned char lzop_magic[] = { |
| 0x89, 0x4c, 0x5a, 0x4f, 0x00, 0x0d, 0x0a, 0x1a, 0x0a |
| }; |
| |
| #define ANDROID_IMAGE_DEFAULT_KERNEL_ADDR 0x10008000 |
| |
| #define ANDROIDR_IMAGE_KERNEL_DECOMPRESS_LOAD_ADDR 0x1080000 |
| |
| static const unsigned char gzip_magic[] = { |
| 0x1f, 0x8b |
| }; |
| |
| static char andr_tmp_str[ANDR_BOOT_ARGS_SIZE + 1]; |
| |
| static struct { |
| const unsigned char * szID; |
| int nIDLength; |
| ulong nCompID; |
| } arrComp[] = { |
| {lzop_magic,9,IH_COMP_LZO}, |
| {gzip_magic,2,IH_COMP_GZIP}, |
| }; |
| |
| /* android R*/ |
| static int android_image_get_kernel_v3(const boot_img_hdr_v3_t *hdr, int verify, ulong *os_data, ulong *os_len); |
| static int android_image_need_move_v3(ulong *img_addr,const boot_img_hdr_v3_t *hdr); |
| static ulong android_image_get_kload_v3(const boot_img_hdr_v3_t *hdr); |
| static ulong android_image_get_comp_v3(const boot_img_hdr_v3_t *hdr); |
| static ulong android_image_get_end_v3(const boot_img_hdr_v3_t *hdr); |
| |
| int is_android_r_image(void *img_addr) |
| { |
| /* check android version for R/S/etc */ |
| p_boot_img_hdr_v3_t pHDR = (p_boot_img_hdr_v3_t)(img_addr); |
| return ((pHDR->header_version >= 3) ? 1 : 0); |
| } |
| |
| static ulong android_image_get_kernel_addr(const boot_img_hdr_t *hdr) |
| { |
| /* |
| * All the Android tools that generate a boot.img use this |
| * address as the default. |
| * |
| * Even though it doesn't really make a lot of sense, and it |
| * might be valid on some platforms, we treat that adress as |
| * the default value for this field, and try to execute the |
| * kernel in place in such a case. |
| * |
| * Otherwise, we will return the actual value set by the user. |
| */ |
| if (hdr->kernel_addr == ANDROID_IMAGE_DEFAULT_KERNEL_ADDR) |
| return (ulong)hdr + hdr->page_size; |
| |
| return hdr->kernel_addr; |
| } |
| |
| /** |
| * android_image_get_kernel() - processes kernel part of Android boot images |
| * @hdr: Pointer to 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. |
| * @os_len: Pointer to a ulong variable, will hold os data length. |
| * |
| * This function returns the os image's start address and length. Also, |
| * it appends the kernel command line to the bootargs env variable. |
| * |
| * Return: Zero, os start address and length on success, |
| * otherwise on failure. |
| */ |
| int android_image_get_kernel(const boot_img_hdr_t *hdr, int verify, |
| ulong *os_data, ulong *os_len) |
| { |
| if (is_android_r_image((void*)hdr)) |
| return android_image_get_kernel_v3((void*)hdr,verify,os_data,os_len); |
| |
| u32 kernel_addr = android_image_get_kernel_addr(hdr); |
| |
| /* |
| * Not all Android tools use the id field for signing the image with |
| * sha1 (or anything) so we don't check it. It is not obvious that the |
| * string is null terminated so we take care of this. |
| */ |
| strncpy(andr_tmp_str, hdr->name, ANDR_BOOT_NAME_SIZE); |
| andr_tmp_str[ANDR_BOOT_NAME_SIZE] = '\0'; |
| if (strlen(andr_tmp_str)) |
| printf("Android's image name: %s\n", andr_tmp_str); |
| |
| printf("Kernel load addr 0x%08x size %u KiB\n", |
| kernel_addr, DIV_ROUND_UP(hdr->kernel_size, 1024)); |
| |
| int len = 0; |
| if (*hdr->cmdline) { |
| printf("Kernel command line: %s\n", hdr->cmdline); |
| len += strlen(hdr->cmdline); |
| } |
| |
| char *bootargs = env_get("bootargs"); |
| if (bootargs) |
| len += strlen(bootargs); |
| |
| char *newbootargs = malloc(len + 2); |
| if (!newbootargs) { |
| puts("Error: malloc in android_image_get_kernel failed!\n"); |
| return -ENOMEM; |
| } |
| *newbootargs = '\0'; |
| |
| if (bootargs) { |
| strcpy(newbootargs, bootargs); |
| strcat(newbootargs, " "); |
| } |
| if (*hdr->cmdline) |
| strcat(newbootargs, hdr->cmdline); |
| |
| env_set("bootargs", newbootargs); |
| |
| if (os_data) { |
| *os_data = (ulong)hdr; |
| *os_data += hdr->page_size; |
| } |
| if (os_len) |
| *os_len = hdr->kernel_size; |
| |
| #if defined(CONFIG_ANDROID_BOOT_IMAGE) |
| ulong end; |
| images.ft_len = (ulong)(hdr->second_size); |
| end = (ulong)hdr; |
| end += hdr->page_size; |
| end += ALIGN(hdr->kernel_size, hdr->page_size); |
| images.rd_start = end; |
| end += ALIGN(hdr->ramdisk_size, hdr->page_size); |
| images.ft_addr = (char *)end; |
| #endif |
| |
| return 0; |
| } |
| |
| int android_image_check_header(const boot_img_hdr_t *hdr) |
| { |
| return memcmp(ANDR_BOOT_MAGIC, hdr->magic, ANDR_BOOT_MAGIC_SIZE); |
| } |
| |
| int vendor_boot_image_check_header(const vendor_boot_img_hdr_t * hdr) |
| { |
| return memcmp(VENDOR_BOOT_MAGIC, hdr->magic, VENDOR_BOOT_MAGIC_SIZE); |
| } |
| |
| ulong android_image_get_end(const boot_img_hdr_t *hdr) |
| { |
| if (is_android_r_image((void*)hdr)) |
| return android_image_get_end_v3((void*)hdr); |
| |
| ulong end; |
| /* |
| * The header takes a full page, the remaining components are aligned |
| * on page boundary |
| */ |
| end = (ulong)hdr; |
| end += hdr->page_size; |
| end += ALIGN(hdr->kernel_size, hdr->page_size); |
| end += ALIGN(hdr->ramdisk_size, hdr->page_size); |
| end += ALIGN(hdr->second_size, hdr->page_size); |
| |
| return end; |
| } |
| |
| ulong android_image_get_kload(const boot_img_hdr_t *hdr) |
| { |
| if (is_android_r_image((void*)hdr)) |
| return android_image_get_kload_v3((void*)hdr); |
| else |
| return android_image_get_kernel_addr(hdr); |
| } |
| |
| int android_image_get_ramdisk(const boot_img_hdr_t *hdr, |
| ulong *rd_data, ulong *rd_len) |
| { |
| if (is_android_r_image((void*)hdr)) |
| return android_image_get_ramdisk_v3((void*)hdr,rd_data,rd_len); |
| |
| if (!hdr->ramdisk_size) { |
| *rd_data = *rd_len = 0; |
| return -1; |
| } |
| |
| printf("RAM disk load addr 0x%08x size %u KiB\n", |
| hdr->ramdisk_addr, DIV_ROUND_UP(hdr->ramdisk_size, 1024)); |
| |
| *rd_data = (unsigned long)hdr; |
| *rd_data += hdr->page_size; |
| *rd_data += ALIGN(hdr->kernel_size, hdr->page_size); |
| |
| *rd_len = hdr->ramdisk_size; |
| return 0; |
| } |
| |
| int android_image_get_second(const boot_img_hdr_t *hdr, |
| ulong *second_data, ulong *second_len) |
| { |
| if (is_android_r_image((void*)hdr)) |
| return 0; |
| |
| if (!hdr->second_size) { |
| *second_data = *second_len = 0; |
| return -1; |
| } |
| |
| *second_data = (unsigned long)hdr; |
| *second_data += hdr->page_size; |
| *second_data += ALIGN(hdr->kernel_size, hdr->page_size); |
| *second_data += ALIGN(hdr->ramdisk_size, hdr->page_size); |
| |
| printf("second address is 0x%lx\n",*second_data); |
| |
| *second_len = hdr->second_size; |
| return 0; |
| } |
| |
| #if !defined(CONFIG_SPL_BUILD) |
| /** |
| * android_print_contents - prints out the contents of the Android format image |
| * @hdr: pointer to the Android format image header |
| * |
| * android_print_contents() formats a multi line Android image contents |
| * description. |
| * The routine prints out Android image properties |
| * |
| * returns: |
| * no returned results |
| */ |
| void android_print_contents(const boot_img_hdr_t *hdr) |
| { |
| const char * const p = IMAGE_INDENT_STRING; |
| /* os_version = ver << 11 | lvl */ |
| u32 os_ver = hdr->os_version >> 11; |
| u32 os_lvl = hdr->os_version & ((1U << 11) - 1); |
| |
| printf("%skernel size: %x\n", p, hdr->kernel_size); |
| printf("%skernel address: %x\n", p, hdr->kernel_addr); |
| printf("%sramdisk size: %x\n", p, hdr->ramdisk_size); |
| printf("%sramdisk addrress: %x\n", p, hdr->ramdisk_addr); |
| printf("%ssecond size: %x\n", p, hdr->second_size); |
| printf("%ssecond address: %x\n", p, hdr->second_addr); |
| printf("%stags address: %x\n", p, hdr->tags_addr); |
| printf("%spage size: %x\n", p, hdr->page_size); |
| /* 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) */ |
| printf("%sos_version: %x (ver: %u.%u.%u, level: %u.%u)\n", |
| p, hdr->os_version, |
| (os_ver >> 7) & 0x7F, (os_ver >> 14) & 0x7F, os_ver & 0x7F, |
| (os_lvl >> 4) + 2000, os_lvl & 0x0F); |
| printf("%sname: %s\n", p, hdr->name); |
| printf("%scmdline: %s\n", p, hdr->cmdline); |
| } |
| #endif |
| |
| ulong android_image_get_comp(const boot_img_hdr_t *os_hdr) |
| { |
| if (is_android_r_image((void*)os_hdr)) |
| return android_image_get_comp_v3((void*)os_hdr); |
| |
| int i; |
| unsigned char *src = (unsigned char *)os_hdr + os_hdr->page_size; |
| for (i = 0;i< ARRAY_SIZE(arrComp);++i) |
| { |
| if (!memcmp(arrComp[i].szID,src,arrComp[i].nIDLength)) |
| return arrComp[i].nCompID; |
| } |
| |
| return IH_COMP_NONE; |
| } |
| int android_image_need_move(ulong *img_addr, const boot_img_hdr_t *hdr) |
| { |
| if (is_android_r_image((void*)hdr)) |
| return android_image_need_move_v3(img_addr,(void*)hdr); |
| |
| ulong kernel_load_addr = android_image_get_kload(hdr); |
| ulong img_start = *img_addr; |
| ulong val = 0; |
| if (kernel_load_addr > img_start) |
| val = kernel_load_addr - img_start; |
| else |
| val = img_start - kernel_load_addr; |
| if (android_image_get_comp(hdr) == IH_COMP_NONE) |
| return 0; |
| if (val < 32*1024*1024) { |
| ulong total_size = android_image_get_end(hdr)-(ulong)hdr; |
| void *reloc_addr = malloc(total_size); |
| if (!reloc_addr) { |
| puts("Error: malloc in android_image_need_move failed!\n"); |
| return -ENOMEM; |
| } |
| printf("reloc_addr =%lx\n", (ulong)reloc_addr); |
| memset(reloc_addr, 0, total_size); |
| memmove(reloc_addr, hdr, total_size); |
| *img_addr = (ulong)reloc_addr; |
| printf("copy done\n"); |
| } |
| return 0; |
| } |
| |
| /*Android R boot func*/ |
| /* definition of vendor_boot partition structure */ |
| p_vendor_boot_img_t p_vender_boot_img = 0; |
| static int android_image_get_kernel_v3(const boot_img_hdr_v3_t *hdr, int verify, |
| ulong *os_data, ulong *os_len) |
| { |
| /* |
| * Not all Android tools use the id field for signing the image with |
| * sha1 (or anything) so we don't check it. It is not obvious that the |
| * string is null terminated so we take care of this. |
| */ |
| /*check vendor boot image first*/ |
| if (!p_vender_boot_img) |
| { |
| if (os_data) |
| *os_data = 0; |
| if (os_len) |
| *os_len = 0; |
| goto exit; |
| } |
| |
| p_vendor_boot_img_hdr_t vb_hdr = &p_vender_boot_img->hdr; |
| char boot_name[ANDR_BOOT_NAME_SIZE + 8]; |
| memset(boot_name,0,sizeof(boot_name)); |
| strncpy(boot_name, (char *)vb_hdr->name, ANDR_BOOT_NAME_SIZE); |
| if (strlen(boot_name)) |
| printf("Android's image name: %s\n", boot_name); |
| |
| //debug("Kernel load addr 0x%08x size %u KiB\n", |
| // hdr_v3->kernel_addr, DIV_ROUND_UP(hdr->kernel_size, 1024)); |
| |
| int len = 0; |
| #if defined(CONFIG_ANDROID_IMG) |
| ulong end; |
| ulong dtb_size = vb_hdr->dtb_size; |
| ulong dtb_addr = vb_hdr->dtb_addr; |
| #endif |
| |
| if (*vb_hdr->cmdline) { |
| printf("Kernel command line: %s\n", vb_hdr->cmdline); |
| len += strlen(vb_hdr->cmdline); |
| } |
| |
| char *pbootargs = env_get("bootargs"); |
| if (pbootargs) { |
| int nlen = strlen(pbootargs) + len + 2; |
| char *pnewbootargs = malloc(nlen); |
| if (pnewbootargs) { |
| memset((void *)pnewbootargs,0,nlen); |
| sprintf(pnewbootargs,"%s %s",pbootargs,vb_hdr->cmdline); |
| env_set("bootargs",pnewbootargs); |
| free(pnewbootargs); |
| pnewbootargs = NULL; |
| } |
| else { |
| puts("Error: malloc in pnewbootargs failed!\n"); |
| } |
| } |
| else { |
| puts("Error: add kernel command line in bootargs failed!\n"); |
| } |
| |
| if (os_data) { |
| *os_data = (ulong)hdr; |
| *os_data += 0x1000; //android R header size |
| } |
| if (os_len) |
| *os_len = hdr->kernel_size; |
| |
| #if defined(CONFIG_ANDROID_IMG) |
| images.ft_len = dtb_size; |
| end = dtb_addr; |
| images.ft_addr = (char *)end; |
| #endif |
| |
| exit: |
| |
| return 0; |
| } |
| |
| |
| void aml_u8_printf(void *pBuffer, int nSize) |
| { |
| printf("aml log : dump buffer from addr=0x%x\n",(unsigned int)(unsigned long)pBuffer); |
| |
| unsigned char *pData = (unsigned char *)pBuffer; |
| int nIndex = 0; |
| |
| for (nIndex = 0; nIndex < nSize;++nIndex) |
| { |
| printf("%02x%s",pData[nIndex], |
| (nIndex + 1)%16 ? " ":"\n"); |
| } |
| |
| printf("\n"); |
| } |
| |
| static ulong android_image_get_end_v3(const boot_img_hdr_v3_t *hdr) |
| { |
| if (!p_vender_boot_img) |
| return 0; |
| |
| /*??*/ |
| ulong end; |
| /* |
| * The header takes a full page, the remaining components are aligned |
| * on page boundary |
| */ |
| |
| end = (ulong)hdr; |
| end += 0x1000; |
| end += ALIGN(hdr->kernel_size, 0x1000); |
| end += ALIGN(hdr->ramdisk_size, 0x1000); |
| return end; |
| } |
| |
| static ulong android_image_get_kload_v3(const boot_img_hdr_v3_t *hdr) |
| { |
| if (p_vender_boot_img) |
| return ANDROIDR_IMAGE_KERNEL_DECOMPRESS_LOAD_ADDR; |
| else |
| return 0; |
| } |
| |
| int android_image_get_ramdisk_v3(const boot_img_hdr_v3_t *hdr, |
| ulong *rd_data, ulong *rd_len) |
| { |
| /*boot image must contain ramdisk*/ |
| if (!hdr->ramdisk_size ||!p_vender_boot_img) |
| { |
| if (rd_data) |
| *rd_data = 0; |
| if (rd_len) |
| *rd_len = 0; |
| return -1; |
| } |
| |
| p_vendor_boot_img_hdr_t vb_hdr = &p_vender_boot_img->hdr; |
| #ifdef CONFIG_RAMDISK_MEM_ADDR |
| vb_hdr->ramdisk_addr = CONFIG_RAMDISK_MEM_ADDR; |
| #endif |
| |
| debug("RAM disk load addr 0x%08x size %u KiB\n", |
| vb_hdr->ramdisk_addr, DIV_ROUND_UP(hdr->ramdisk_size, 1024)); |
| |
| /*ramdisk offset of android R boot image*/ |
| int nOffset = (DIV_ROUND_UP(hdr->kernel_size,4096)+1)*4096; |
| |
| unsigned char *pRAMdisk = (unsigned char *)(unsigned long)vb_hdr->ramdisk_addr; |
| |
| /* copy ramdisk to ramdisk_addr */ |
| memmove(pRAMdisk, (char*)(unsigned long)(simple_strtoul(env_get("loadaddr"), NULL, 16) + nOffset),hdr->ramdisk_size); |
| memmove(pRAMdisk + hdr->ramdisk_size, p_vender_boot_img->szData,vb_hdr->vendor_ramdisk_size); |
| |
| if (rd_data) |
| *rd_data = vb_hdr->ramdisk_addr; |
| |
| if (rd_len) |
| *rd_len = hdr->ramdisk_size + vb_hdr->vendor_ramdisk_size; |
| |
| return 0; |
| } |
| |
| static ulong android_image_get_comp_v3(const boot_img_hdr_v3_t *os_hdr) |
| { |
| int i; |
| unsigned char *src = (unsigned char *)os_hdr + 0x1000; |
| |
| for (i = 0;i< ARRAY_SIZE(arrComp);++i) |
| { |
| if (!memcmp(arrComp[i].szID,src,arrComp[i].nIDLength)) |
| return arrComp[i].nCompID; |
| } |
| |
| return IH_COMP_NONE; |
| } |
| |
| static int android_image_need_move_v3(ulong *img_addr, const boot_img_hdr_v3_t *hdr) |
| { |
| /* |
| Gzip format boot.img need relocate to high address.In order to quickly boot,so change load |
| decompress kernel address,when imgread load kernel at 0x3080000 and load decompress kernel |
| address is 0x1080000 needless to relocate,margin calculation is 32M. |
| */ |
| ulong kernel_load_addr = android_image_get_kload_v3(hdr); |
| ulong img_start = *img_addr; |
| ulong val = 0; |
| if (kernel_load_addr > img_start) |
| val = kernel_load_addr - img_start; |
| else |
| val = img_start - kernel_load_addr; |
| |
| if (android_image_get_comp_v3(hdr) == IH_COMP_NONE) |
| return 0; |
| |
| if (val < 32*1024*1024) { |
| ulong total_size = android_image_get_end_v3(hdr)-(ulong)hdr; |
| void *reloc_addr = malloc(total_size); |
| if (!reloc_addr) { |
| puts("Error: malloc in android_image_need_move failed!\n"); |
| return -ENOMEM; |
| } |
| printf("reloc_addr =%lx\n", (ulong)reloc_addr); |
| memset(reloc_addr, 0, total_size); |
| memmove(reloc_addr, hdr, total_size); |
| *img_addr = (ulong)reloc_addr; |
| printf("Copy done\n"); |
| } |
| return 0; |
| } |