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common/image-android.c
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// SPDX-License-Identifier: GPL-2.0+ |
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/* * Copyright (c) 2011 Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
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* * Copyright (C) 2015-2016 Freescale Semiconductor, Inc. * Copyright 2017 NXP |
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*/ #include <common.h> #include <image.h> #include <android_image.h> |
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#include <malloc.h> #include <errno.h> |
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#include <asm/bootm.h> #include <asm/mach-imx/boot_mode.h> #include <asm/arch/sys_proto.h> #include <fb_fsl.h> #include <asm/setup.h> #include <dm.h> |
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#include <mmc.h> |
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#define ANDROID_IMAGE_DEFAULT_KERNEL_ADDR 0x10008000 |
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static char andr_tmp_str[ANDR_BOOT_ARGS_SIZE + 1]; |
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static ulong android_image_get_kernel_addr(const struct andr_img_hdr *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; } |
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/** * 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. */ |
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int android_image_get_kernel(const struct andr_img_hdr *hdr, int verify, ulong *os_data, ulong *os_len) { |
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extern boot_metric metrics; |
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u32 kernel_addr = android_image_get_kernel_addr(hdr); |
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/* * 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 ", andr_tmp_str); printf("Kernel load addr 0x%08x size %u KiB ", |
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kernel_addr, DIV_ROUND_UP(hdr->kernel_size, 1024)); |
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char newbootargs[512] = {0}; char commandline[2048] = {0}; int offset; char *bootargs = env_get("bootargs"); if (bootargs) { if (strlen(bootargs) + 1 > sizeof(commandline)) { printf("bootargs is too long! "); return -1; } else strncpy(commandline, bootargs, sizeof(commandline) - 1); } else { offset = fdt_path_offset(gd->fdt_blob, "/chosen"); if (offset > 0) { bootargs = (char *)fdt_getprop(gd->fdt_blob, offset, "bootargs", NULL); if (bootargs) sprintf(commandline, "%s ", bootargs); } if (*hdr->cmdline) { if (strlen(hdr->cmdline) + 1 > sizeof(commandline) - strlen(commandline)) { printf("cmdline in bootimg is too long! "); return -1; } else strncat(commandline, hdr->cmdline, sizeof(commandline) - strlen(commandline)); } |
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} |
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/* Add 'bootargs_ram_capacity' to hold the parameters based on different ram capacity */ char *bootargs_ram_capacity = env_get("bootargs_ram_capacity"); if (bootargs_ram_capacity) { strncat(commandline, " ", sizeof(commandline) - strlen(commandline)); strncat(commandline, bootargs_ram_capacity, sizeof(commandline) - strlen(commandline)); } #ifdef CONFIG_SERIAL_TAG struct tag_serialnr serialnr; get_board_serial(&serialnr); sprintf(newbootargs, " androidboot.serialno=%08x%08x", serialnr.high, serialnr.low); strncat(commandline, newbootargs, sizeof(commandline) - strlen(commandline)); |
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if (serialnr.high + serialnr.low != 0) { char bd_addr[16]={0}; sprintf(bd_addr, "%08x%08x", serialnr.high, serialnr.low); sprintf(newbootargs, " androidboot.btmacaddr=%c%c:%c%c:%c%c:%c%c:%c%c:%c%c", bd_addr[0],bd_addr[1],bd_addr[2],bd_addr[3],bd_addr[4],bd_addr[5], bd_addr[6],bd_addr[7],bd_addr[8],bd_addr[9],bd_addr[10],bd_addr[11]); strncat(commandline, newbootargs, sizeof(commandline) - strlen(commandline)); } |
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#endif /* append soc type into bootargs */ char *soc_type = env_get("soc_type"); if (soc_type) { sprintf(newbootargs, " androidboot.soc_type=%s", soc_type); strncat(commandline, newbootargs, sizeof(commandline) - strlen(commandline)); |
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} |
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sprintf(newbootargs, " androidboot.boot_device_root=mmcblk%d", mmc_map_to_kernel_blk(mmc_get_env_dev())); strncat(commandline, newbootargs, sizeof(commandline) - strlen(commandline)); |
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/* boot metric variables */ metrics.ble_1 = get_timer(0); sprintf(newbootargs, " androidboot.boottime=1BLL:%d,1BLE:%d,KL:%d,KD:%d,AVB:%d,ODT:%d,SW:%d", metrics.bll_1, metrics.ble_1, metrics.kl, metrics.kd, metrics.avb, metrics.odt, metrics.sw); strncat(commandline, newbootargs, sizeof(commandline) - strlen(commandline)); #if defined(CONFIG_ARCH_MX6) || defined(CONFIG_ARCH_MX7) || \ defined(CONFIG_ARCH_MX7ULP) || defined(CONFIG_ARCH_IMX8M) char cause[18]; memset(cause, '\0', sizeof(cause)); get_reboot_reason(cause); if (strstr(cause, "POR")) sprintf(newbootargs," androidboot.bootreason=cold,powerkey"); else if (strstr(cause, "WDOG") || strstr(cause, "WDG")) sprintf(newbootargs," androidboot.bootreason=watchdog"); else sprintf(newbootargs," androidboot.bootreason=reboot"); #else sprintf(newbootargs," androidboot.bootreason=reboot"); #endif strncat(commandline, newbootargs, sizeof(commandline) - strlen(commandline)); #ifdef CONFIG_AVB_SUPPORT /* secondary cmdline added by avb */ char *bootargs_sec = env_get("bootargs_sec"); if (bootargs_sec) { strncat(commandline, " ", sizeof(commandline) - strlen(commandline)); strncat(commandline, bootargs_sec, sizeof(commandline) - strlen(commandline)); |
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} |
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#endif #ifdef CONFIG_SYSTEM_RAMDISK_SUPPORT /* Normal boot: * cmdline to bypass ramdisk in boot.img, but use the system.img * Recovery boot: * Use the ramdisk in boot.img */ char *bootargs_3rd = env_get("bootargs_3rd"); if (bootargs_3rd) { strncat(commandline, " ", sizeof(commandline) - strlen(commandline)); strncat(commandline, bootargs_3rd, sizeof(commandline) - strlen(commandline)); } #endif |
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/* VTS need this commandline to verify fdt overlay. Pass the * dtb index as "0" here since we only have one dtb in dtbo * partition and haven't enabled the dtb overlay. */ #if defined(CONFIG_ANDROID_SUPPORT) || defined(CONFIG_ANDROID_AUTO_SUPPORT) sprintf(newbootargs," androidboot.dtbo_idx=0"); strncat(commandline, newbootargs, sizeof(commandline) - strlen(commandline)); #endif char *keystore = env_get("keystore"); if ((keystore == NULL) || strncmp(keystore, "trusty", sizeof("trusty"))) { char *bootargs_trusty = "androidboot.keystore=software"; strncat(commandline, " ", sizeof(commandline) - strlen(commandline)); strncat(commandline, bootargs_trusty, sizeof(commandline) - strlen(commandline)); } else { char *bootargs_trusty = "androidboot.keystore=trusty"; strncat(commandline, " ", sizeof(commandline) - strlen(commandline)); strncat(commandline, bootargs_trusty, sizeof(commandline) - strlen(commandline)); } #ifdef CONFIG_APPEND_BOOTARGS /* Add 'append_bootargs' to hold some paramemters which need to be appended * to bootargs */ char *append_bootargs = env_get("append_bootargs"); if (append_bootargs) { if (strlen(append_bootargs) + 2 > (sizeof(commandline) - strlen(commandline))) { printf("The 'append_bootargs' is too long to be appended to bootargs "); } else { strncat(commandline, " ", sizeof(commandline) - strlen(commandline)); strncat(commandline, append_bootargs, sizeof(commandline) - strlen(commandline)); } } #endif debug("Kernel command line: %s ", commandline); env_set("bootargs", commandline); |
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if (os_data) { *os_data = (ulong)hdr; *os_data += hdr->page_size; } if (os_len) *os_len = hdr->kernel_size; return 0; } int android_image_check_header(const struct andr_img_hdr *hdr) { return memcmp(ANDR_BOOT_MAGIC, hdr->magic, ANDR_BOOT_MAGIC_SIZE); } ulong android_image_get_end(const struct andr_img_hdr *hdr) { |
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ulong end; |
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/* * The header takes a full page, the remaining components are aligned * on page boundary */ |
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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); |
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return end; |
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} ulong android_image_get_kload(const struct andr_img_hdr *hdr) { |
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return android_image_get_kernel_addr(hdr); |
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} int android_image_get_ramdisk(const struct andr_img_hdr *hdr, ulong *rd_data, ulong *rd_len) { |
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if (!hdr->ramdisk_size) { *rd_data = *rd_len = 0; |
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return -1; |
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} |
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printf("RAM disk load addr 0x%08x size %u KiB ", hdr->ramdisk_addr, DIV_ROUND_UP(hdr->ramdisk_size, 1024)); |
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*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; } |
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int android_image_get_second(const struct andr_img_hdr *hdr, ulong *second_data, ulong *second_len) { 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 ",*second_data); *second_len = hdr->second_size; return 0; } |
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#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 struct andr_img_hdr *hdr) { const char * const p = IMAGE_INDENT_STRING; |
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/* os_version = ver << 11 | lvl */ u32 os_ver = hdr->os_version >> 11; u32 os_lvl = hdr->os_version & ((1U << 11) - 1); |
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printf("%skernel size: %x ", p, hdr->kernel_size); printf("%skernel address: %x ", p, hdr->kernel_addr); printf("%sramdisk size: %x ", p, hdr->ramdisk_size); printf("%sramdisk addrress: %x ", p, hdr->ramdisk_addr); printf("%ssecond size: %x ", p, hdr->second_size); printf("%ssecond address: %x ", p, hdr->second_addr); printf("%stags address: %x ", p, hdr->tags_addr); printf("%spage size: %x ", p, hdr->page_size); |
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/* 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) ", p, hdr->os_version, (os_ver >> 7) & 0x7F, (os_ver >> 14) & 0x7F, os_ver & 0x7F, (os_lvl >> 4) + 2000, os_lvl & 0x0F); |
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printf("%sname: %s ", p, hdr->name); printf("%scmdline: %s ", p, hdr->cmdline); } #endif |
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#define ARM64_IMAGE_MAGIC 0x644d5241 bool image_arm64(void *images) { struct header_image *ih; ih = (struct header_image *)images; debug("image magic: %x ", ih->magic); if (ih->magic == le32_to_cpu(ARM64_IMAGE_MAGIC)) return true; return false; } |