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https://github.com/AsahiLinux/u-boot
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9fb625ce05
Move env_set() over to the new header file. Acked-by: Joe Hershberger <joe.hershberger@ni.com> Signed-off-by: Simon Glass <sjg@chromium.org>
227 lines
6.4 KiB
C
227 lines
6.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2011 Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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*/
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#include <common.h>
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#include <env.h>
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#include <image.h>
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#include <android_image.h>
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#include <malloc.h>
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#include <errno.h>
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#include <asm/unaligned.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)
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{
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/*
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* All the Android tools that generate a boot.img use this
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* address as the default.
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*
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* Even though it doesn't really make a lot of sense, and it
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* might be valid on some platforms, we treat that adress as
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* the default value for this field, and try to execute the
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* kernel in place in such a case.
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*
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* Otherwise, we will return the actual value set by the user.
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*/
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if (hdr->kernel_addr == ANDROID_IMAGE_DEFAULT_KERNEL_ADDR)
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return (ulong)hdr + hdr->page_size;
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return hdr->kernel_addr;
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}
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/**
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* android_image_get_kernel() - processes kernel part of Android boot images
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* @hdr: Pointer to image header, which is at the start
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* of the image.
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* @verify: Checksum verification flag. Currently unimplemented.
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* @os_data: Pointer to a ulong variable, will hold os data start
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* address.
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* @os_len: Pointer to a ulong variable, will hold os data length.
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*
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* This function returns the os image's start address and length. Also,
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* it appends the kernel command line to the bootargs env variable.
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*
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* Return: Zero, os start address and length on success,
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* otherwise on failure.
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*/
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int android_image_get_kernel(const struct andr_img_hdr *hdr, int verify,
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ulong *os_data, ulong *os_len)
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{
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u32 kernel_addr = android_image_get_kernel_addr(hdr);
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const struct image_header *ihdr = (const struct image_header *)
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((uintptr_t)hdr + hdr->page_size);
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/*
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* Not all Android tools use the id field for signing the image with
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* sha1 (or anything) so we don't check it. It is not obvious that the
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* string is null terminated so we take care of this.
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*/
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strncpy(andr_tmp_str, hdr->name, ANDR_BOOT_NAME_SIZE);
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andr_tmp_str[ANDR_BOOT_NAME_SIZE] = '\0';
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if (strlen(andr_tmp_str))
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printf("Android's image name: %s\n", andr_tmp_str);
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printf("Kernel load addr 0x%08x size %u KiB\n",
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kernel_addr, DIV_ROUND_UP(hdr->kernel_size, 1024));
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int len = 0;
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if (*hdr->cmdline) {
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printf("Kernel command line: %s\n", hdr->cmdline);
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len += strlen(hdr->cmdline);
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}
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char *bootargs = env_get("bootargs");
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if (bootargs)
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len += strlen(bootargs);
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char *newbootargs = malloc(len + 2);
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if (!newbootargs) {
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puts("Error: malloc in android_image_get_kernel failed!\n");
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return -ENOMEM;
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}
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*newbootargs = '\0';
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if (bootargs) {
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strcpy(newbootargs, bootargs);
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strcat(newbootargs, " ");
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}
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if (*hdr->cmdline)
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strcat(newbootargs, hdr->cmdline);
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env_set("bootargs", newbootargs);
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if (os_data) {
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if (image_get_magic(ihdr) == IH_MAGIC) {
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*os_data = image_get_data(ihdr);
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} else {
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*os_data = (ulong)hdr;
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*os_data += hdr->page_size;
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}
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}
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if (os_len) {
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if (image_get_magic(ihdr) == IH_MAGIC)
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*os_len = image_get_data_size(ihdr);
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else
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*os_len = hdr->kernel_size;
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}
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return 0;
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}
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int android_image_check_header(const struct andr_img_hdr *hdr)
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{
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return memcmp(ANDR_BOOT_MAGIC, hdr->magic, ANDR_BOOT_MAGIC_SIZE);
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}
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ulong android_image_get_end(const struct andr_img_hdr *hdr)
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{
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ulong end;
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/*
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* The header takes a full page, the remaining components are aligned
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* on page boundary
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*/
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end = (ulong)hdr;
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end += hdr->page_size;
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end += ALIGN(hdr->kernel_size, hdr->page_size);
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end += ALIGN(hdr->ramdisk_size, hdr->page_size);
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end += ALIGN(hdr->second_size, hdr->page_size);
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return end;
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}
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ulong android_image_get_kload(const struct andr_img_hdr *hdr)
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{
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return android_image_get_kernel_addr(hdr);
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}
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ulong android_image_get_kcomp(const struct andr_img_hdr *hdr)
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{
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const void *p = (void *)((uintptr_t)hdr + hdr->page_size);
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if (image_get_magic((image_header_t *)p) == IH_MAGIC)
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return image_get_comp((image_header_t *)p);
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else if (get_unaligned_le32(p) == LZ4F_MAGIC)
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return IH_COMP_LZ4;
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else
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return IH_COMP_NONE;
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}
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int android_image_get_ramdisk(const struct andr_img_hdr *hdr,
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ulong *rd_data, ulong *rd_len)
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{
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if (!hdr->ramdisk_size) {
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*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\n",
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hdr->ramdisk_addr, DIV_ROUND_UP(hdr->ramdisk_size, 1024));
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*rd_data = (unsigned long)hdr;
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*rd_data += hdr->page_size;
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*rd_data += ALIGN(hdr->kernel_size, hdr->page_size);
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*rd_len = hdr->ramdisk_size;
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return 0;
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}
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int android_image_get_second(const struct andr_img_hdr *hdr,
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ulong *second_data, ulong *second_len)
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{
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if (!hdr->second_size) {
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*second_data = *second_len = 0;
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return -1;
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}
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*second_data = (unsigned long)hdr;
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*second_data += hdr->page_size;
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*second_data += ALIGN(hdr->kernel_size, hdr->page_size);
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*second_data += ALIGN(hdr->ramdisk_size, hdr->page_size);
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printf("second address is 0x%lx\n",*second_data);
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*second_len = hdr->second_size;
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return 0;
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}
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#if !defined(CONFIG_SPL_BUILD)
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/**
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* android_print_contents - prints out the contents of the Android format image
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* @hdr: pointer to the Android format image header
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*
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* android_print_contents() formats a multi line Android image contents
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* description.
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* The routine prints out Android image properties
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*
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* returns:
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* no returned results
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*/
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void android_print_contents(const struct andr_img_hdr *hdr)
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{
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const char * const p = IMAGE_INDENT_STRING;
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/* os_version = ver << 11 | lvl */
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u32 os_ver = hdr->os_version >> 11;
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u32 os_lvl = hdr->os_version & ((1U << 11) - 1);
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printf("%skernel size: %x\n", p, hdr->kernel_size);
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printf("%skernel address: %x\n", p, hdr->kernel_addr);
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printf("%sramdisk size: %x\n", p, hdr->ramdisk_size);
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printf("%sramdisk address: %x\n", p, hdr->ramdisk_addr);
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printf("%ssecond size: %x\n", p, hdr->second_size);
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printf("%ssecond address: %x\n", p, hdr->second_addr);
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printf("%stags address: %x\n", p, hdr->tags_addr);
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printf("%spage size: %x\n", p, hdr->page_size);
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/* ver = A << 14 | B << 7 | C (7 bits for each of A, B, C)
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* lvl = ((Y - 2000) & 127) << 4 | M (7 bits for Y, 4 bits for M) */
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printf("%sos_version: %x (ver: %u.%u.%u, level: %u.%u)\n",
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p, hdr->os_version,
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(os_ver >> 7) & 0x7F, (os_ver >> 14) & 0x7F, os_ver & 0x7F,
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(os_lvl >> 4) + 2000, os_lvl & 0x0F);
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printf("%sname: %s\n", p, hdr->name);
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printf("%scmdline: %s\n", p, hdr->cmdline);
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}
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#endif
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