1 /* 2 * Copyright (c) 2011 Sebastian Andrzej Siewior <bigeasy@linutronix.de> 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <image.h> 9 #include <android_image.h> 10 11 static char andr_tmp_str[ANDR_BOOT_ARGS_SIZE + 1]; 12 13 int android_image_get_kernel(const struct andr_img_hdr *hdr, int verify, 14 ulong *os_data, ulong *os_len) 15 { 16 /* 17 * Not all Android tools use the id field for signing the image with 18 * sha1 (or anything) so we don't check it. It is not obvious that the 19 * string is null terminated so we take care of this. 20 */ 21 strncpy(andr_tmp_str, hdr->name, ANDR_BOOT_NAME_SIZE); 22 andr_tmp_str[ANDR_BOOT_NAME_SIZE] = '\0'; 23 if (strlen(andr_tmp_str)) 24 printf("Android's image name: %s\n", andr_tmp_str); 25 26 printf("Kernel load addr 0x%08x size %u KiB\n", 27 hdr->kernel_addr, DIV_ROUND_UP(hdr->kernel_size, 1024)); 28 strncpy(andr_tmp_str, hdr->cmdline, ANDR_BOOT_ARGS_SIZE); 29 andr_tmp_str[ANDR_BOOT_ARGS_SIZE] = '\0'; 30 if (strlen(andr_tmp_str)) { 31 printf("Kernel command line: %s\n", andr_tmp_str); 32 setenv("bootargs", andr_tmp_str); 33 } 34 if (hdr->ramdisk_size) 35 printf("RAM disk load addr 0x%08x size %u KiB\n", 36 hdr->ramdisk_addr, 37 DIV_ROUND_UP(hdr->ramdisk_size, 1024)); 38 39 if (os_data) { 40 *os_data = (ulong)hdr; 41 *os_data += hdr->page_size; 42 } 43 if (os_len) 44 *os_len = hdr->kernel_size; 45 return 0; 46 } 47 48 int android_image_check_header(const struct andr_img_hdr *hdr) 49 { 50 return memcmp(ANDR_BOOT_MAGIC, hdr->magic, ANDR_BOOT_MAGIC_SIZE); 51 } 52 53 ulong android_image_get_end(const struct andr_img_hdr *hdr) 54 { 55 u32 size = 0; 56 /* 57 * The header takes a full page, the remaining components are aligned 58 * on page boundary 59 */ 60 size += hdr->page_size; 61 size += ALIGN(hdr->kernel_size, hdr->page_size); 62 size += ALIGN(hdr->ramdisk_size, hdr->page_size); 63 size += ALIGN(hdr->second_size, hdr->page_size); 64 65 return size; 66 } 67 68 ulong android_image_get_kload(const struct andr_img_hdr *hdr) 69 { 70 return hdr->kernel_addr; 71 } 72 73 int android_image_get_ramdisk(const struct andr_img_hdr *hdr, 74 ulong *rd_data, ulong *rd_len) 75 { 76 if (!hdr->ramdisk_size) 77 return -1; 78 *rd_data = (unsigned long)hdr; 79 *rd_data += hdr->page_size; 80 *rd_data += ALIGN(hdr->kernel_size, hdr->page_size); 81 82 *rd_len = hdr->ramdisk_size; 83 return 0; 84 } 85