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Initial commit, from CM's system/core

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Change-Id: I9bcf09859a7171e4fbb869b1d2818b31b2677207
tirimbino
Ketut Putu Kumajaya 10 years ago committed by Christopher N. Hesse
parent a8fe2a112f
commit 6384637a7c
4 changed files with 640 additions and 0 deletions
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  1. 40
      dtbhtool/Android.mk
  2. 100
      dtbhtool/bootimg.h
  3. 289
      dtbhtool/mkbootimg.c
  4. 211
      dtbhtool/unpackbootimg.c

40
dtbhtool/Android.mk
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LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)
LOCAL_SRC_FILES := mkbootimg.c
LOCAL_STATIC_LIBRARIES := libmincrypt
LOCAL_MODULE := mkbootimg
include $(BUILD_HOST_EXECUTABLE)
include $(CLEAR_VARS)
LOCAL_SRC_FILES := unpackbootimg.c
LOCAL_MODULE := unpackbootimg
include $(BUILD_HOST_EXECUTABLE)
include $(CLEAR_VARS)
LOCAL_SRC_FILES := mkbootimg.c
LOCAL_STATIC_LIBRARIES := libmincrypt libcutils libc
LOCAL_MODULE := utility_mkbootimg
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE_STEM := mkbootimg
LOCAL_MODULE_CLASS := UTILITY_EXECUTABLES
LOCAL_UNSTRIPPED_PATH := $(PRODUCT_OUT)/symbols/utilities
LOCAL_MODULE_PATH := $(PRODUCT_OUT)/utilities
LOCAL_FORCE_STATIC_EXECUTABLE := true
include $(BUILD_EXECUTABLE)
include $(CLEAR_VARS)
LOCAL_SRC_FILES := unpackbootimg.c
LOCAL_STATIC_LIBRARIES := libcutils libc
LOCAL_MODULE := utility_unpackbootimg
LOCAL_MODULE_TAGS := eng
LOCAL_MODULE_STEM := unpackbootimg
LOCAL_MODULE_CLASS := UTILITY_EXECUTABLES
LOCAL_UNSTRIPPED_PATH := $(PRODUCT_OUT)/symbols/utilities
LOCAL_MODULE_PATH := $(PRODUCT_OUT)/utilities
LOCAL_FORCE_STATIC_EXECUTABLE := true
include $(BUILD_EXECUTABLE)
$(call dist-for-goals,dist_files,$(LOCAL_BUILT_MODULE))

100
dtbhtool/bootimg.h
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/* tools/mkbootimg/bootimg.h
**
** Copyright 2007, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#ifndef _BOOT_IMAGE_H_
#define _BOOT_IMAGE_H_
typedef struct boot_img_hdr boot_img_hdr;
#define BOOT_MAGIC "ANDROID!"
#define BOOT_MAGIC_SIZE 8
#define BOOT_NAME_SIZE 16
#define BOOT_ARGS_SIZE 512
struct boot_img_hdr
{
unsigned char magic[BOOT_MAGIC_SIZE];
unsigned kernel_size; /* size in bytes */
unsigned kernel_addr; /* physical load addr */
unsigned ramdisk_size; /* size in bytes */
unsigned ramdisk_addr; /* physical load addr */
unsigned second_size; /* size in bytes */
unsigned second_addr; /* physical load addr */
unsigned tags_addr; /* physical addr for kernel tags */
unsigned page_size; /* flash page size we assume */
unsigned dt_size; /* device tree in bytes */
unsigned unused; /* future expansion: should be 0 */
unsigned char name[BOOT_NAME_SIZE]; /* asciiz product name */
unsigned char cmdline[BOOT_ARGS_SIZE];
unsigned id[8]; /* timestamp / checksum / sha1 / etc */
};
/*
** +-----------------+
** | boot header | 1 page
** +-----------------+
** | kernel | n pages
** +-----------------+
** | ramdisk | m pages
** +-----------------+
** | second stage | o pages
** +-----------------+
** | device tree | 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 = (dt_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
*/
#if 0
typedef struct ptentry ptentry;
struct ptentry {
char name[16]; /* asciiz partition name */
unsigned start; /* starting block number */
unsigned length; /* length in blocks */
unsigned flags; /* set to zero */
};
/* MSM Partition Table ATAG
**
** length: 2 + 7 * n
** atag: 0x4d534d70
** <ptentry> x n
*/
#endif
#endif

289
dtbhtool/mkbootimg.c
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/* tools/mkbootimg/mkbootimg.c
**
** Copyright 2007, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include "mincrypt/sha.h"
#include "bootimg.h"
static void *load_file(const char *fn, unsigned *_sz)
{
char *data;
int sz;
int fd;
data = 0;
fd = open(fn, O_RDONLY);
if(fd < 0) return 0;
sz = lseek(fd, 0, SEEK_END);
if(sz < 0) goto oops;
if(lseek(fd, 0, SEEK_SET) != 0) goto oops;
data = (char*) malloc(sz);
if(data == 0) goto oops;
if(read(fd, data, sz) != sz) goto oops;
close(fd);
if(_sz) *_sz = sz;
return data;
oops:
close(fd);
if(data != 0) free(data);
return 0;
}
int usage(void)
{
fprintf(stderr,"usage: mkbootimg\n"
" --kernel <filename>\n"
" --ramdisk <filename>\n"
" [ --second <2ndbootloader-filename> ]\n"
" [ --cmdline <kernel-commandline> ]\n"
" [ --board <boardname> ]\n"
" [ --base <address> ]\n"
" [ --pagesize <pagesize> ]\n"
" [ --ramdisk_offset <address> ]\n"
" [ --dt <filename> ]\n"
" -o|--output <filename>\n"
);
return 1;
}
static unsigned char padding[131072] = { 0, };
int write_padding(int fd, unsigned pagesize, unsigned itemsize)
{
unsigned pagemask = pagesize - 1;
unsigned count;
if((itemsize & pagemask) == 0) {
return 0;
}
count = pagesize - (itemsize & pagemask);
if(write(fd, padding, count) != count) {
return -1;
} else {
return 0;
}
}
int main(int argc, char **argv)
{
boot_img_hdr hdr;
char *kernel_fn = 0;
void *kernel_data = 0;
char *ramdisk_fn = 0;
void *ramdisk_data = 0;
char *second_fn = 0;
void *second_data = 0;
char *cmdline = "";
char *bootimg = 0;
char *board = "";
char *dt_fn = 0;
void *dt_data = 0;
unsigned pagesize = 2048;
int fd;
SHA_CTX ctx;
uint8_t* sha;
unsigned base = 0x10000000;
unsigned kernel_offset = 0x00008000;
unsigned ramdisk_offset = 0x01000000;
unsigned second_offset = 0x00f00000;
unsigned tags_offset = 0x00000100;
argc--;
argv++;
memset(&hdr, 0, sizeof(hdr));
while(argc > 0){
char *arg = argv[0];
char *val = argv[1];
if(argc < 2) {
return usage();
}
argc -= 2;
argv += 2;
if(!strcmp(arg, "--output") || !strcmp(arg, "-o")) {
bootimg = val;
} else if(!strcmp(arg, "--kernel")) {
kernel_fn = val;
} else if(!strcmp(arg, "--ramdisk")) {
ramdisk_fn = val;
} else if(!strcmp(arg, "--second")) {
second_fn = val;
} else if(!strcmp(arg, "--cmdline")) {
cmdline = val;
} else if(!strcmp(arg, "--base")) {
base = strtoul(val, 0, 16);
} else if(!strcmp(arg, "--kernel_offset")) {
kernel_offset = strtoul(val, 0, 16);
} else if(!strcmp(arg, "--ramdisk_offset")) {
ramdisk_offset = strtoul(val, 0, 16);
} else if(!strcmp(arg, "--second_offset")) {
second_offset = strtoul(val, 0, 16);
} else if(!strcmp(arg, "--tags_offset")) {
tags_offset = strtoul(val, 0, 16);
} else if(!strcmp(arg, "--board")) {
board = val;
} else if(!strcmp(arg,"--pagesize")) {
pagesize = strtoul(val, 0, 10);
if ((pagesize != 2048) && (pagesize != 4096) && (pagesize != 8192) && (pagesize != 16384) && (pagesize != 32768) && (pagesize != 65536) && (pagesize != 131072)) {
fprintf(stderr,"error: unsupported page size %d\n", pagesize);
return -1;
}
} else if(!strcmp(arg, "--dt")) {
dt_fn = val;
} else {
return usage();
}
}
hdr.page_size = pagesize;
hdr.kernel_addr = base + kernel_offset;
hdr.ramdisk_addr = base + ramdisk_offset;
hdr.second_addr = base + second_offset;
hdr.tags_addr = base + tags_offset;
if(bootimg == 0) {
fprintf(stderr,"error: no output filename specified\n");
return usage();
}
if(kernel_fn == 0) {
fprintf(stderr,"error: no kernel image specified\n");
return usage();
}
if(ramdisk_fn == 0) {
fprintf(stderr,"error: no ramdisk image specified\n");
return usage();
}
if(strlen(board) >= BOOT_NAME_SIZE) {
fprintf(stderr,"error: board name too large\n");
return usage();
}
strcpy(hdr.name, board);
memcpy(hdr.magic, BOOT_MAGIC, BOOT_MAGIC_SIZE);
if(strlen(cmdline) > (BOOT_ARGS_SIZE - 1)) {
fprintf(stderr,"error: kernel commandline too large\n");
return 1;
}
strcpy((char*)hdr.cmdline, cmdline);
kernel_data = load_file(kernel_fn, &hdr.kernel_size);
if(kernel_data == 0) {
fprintf(stderr,"error: could not load kernel '%s'\n", kernel_fn);
return 1;
}
if(!strcmp(ramdisk_fn,"NONE")) {
ramdisk_data = 0;
hdr.ramdisk_size = 0;
} else {
ramdisk_data = load_file(ramdisk_fn, &hdr.ramdisk_size);
if(ramdisk_data == 0) {
fprintf(stderr,"error: could not load ramdisk '%s'\n", ramdisk_fn);
return 1;
}
}
if(second_fn) {
second_data = load_file(second_fn, &hdr.second_size);
if(second_data == 0) {
fprintf(stderr,"error: could not load secondstage '%s'\n", second_fn);
return 1;
}
}
if(dt_fn) {
dt_data = load_file(dt_fn, &hdr.dt_size);
if (dt_data == 0) {
fprintf(stderr,"error: could not load device tree image '%s'\n", dt_fn);
return 1;
}
}
/* put a hash of the contents in the header so boot images can be
* differentiated based on their first 2k.
*/
SHA_init(&ctx);
SHA_update(&ctx, kernel_data, hdr.kernel_size);
SHA_update(&ctx, &hdr.kernel_size, sizeof(hdr.kernel_size));
SHA_update(&ctx, ramdisk_data, hdr.ramdisk_size);
SHA_update(&ctx, &hdr.ramdisk_size, sizeof(hdr.ramdisk_size));
SHA_update(&ctx, second_data, hdr.second_size);
SHA_update(&ctx, &hdr.second_size, sizeof(hdr.second_size));
if(dt_data) {
SHA_update(&ctx, dt_data, hdr.dt_size);
SHA_update(&ctx, &hdr.dt_size, sizeof(hdr.dt_size));
}
sha = SHA_final(&ctx);
memcpy(hdr.id, sha,
SHA_DIGEST_SIZE > sizeof(hdr.id) ? sizeof(hdr.id) : SHA_DIGEST_SIZE);
fd = open(bootimg, O_CREAT | O_TRUNC | O_WRONLY, 0644);
if(fd < 0) {
fprintf(stderr,"error: could not create '%s'\n", bootimg);
return 1;
}
if(write(fd, &hdr, sizeof(hdr)) != sizeof(hdr)) goto fail;
if(write_padding(fd, pagesize, sizeof(hdr))) goto fail;
if(write(fd, kernel_data, hdr.kernel_size) != hdr.kernel_size) goto fail;
if(write_padding(fd, pagesize, hdr.kernel_size)) goto fail;
if(write(fd, ramdisk_data, hdr.ramdisk_size) != hdr.ramdisk_size) goto fail;
if(write_padding(fd, pagesize, hdr.ramdisk_size)) goto fail;
if(second_data) {
if(write(fd, second_data, hdr.second_size) != hdr.second_size) goto fail;
if(write_padding(fd, pagesize, hdr.ramdisk_size)) goto fail;
}
if(dt_data) {
if(write(fd, dt_data, hdr.dt_size) != hdr.dt_size) goto fail;
if(write_padding(fd, pagesize, hdr.dt_size)) goto fail;
}
return 0;
fail:
unlink(bootimg);
close(fd);
fprintf(stderr,"error: failed writing '%s': %s\n", bootimg,
strerror(errno));
return 1;
}

211
dtbhtool/unpackbootimg.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <limits.h>
#include <libgen.h>
#include "mincrypt/sha.h"
#include "bootimg.h"
typedef unsigned char byte;
int read_padding(FILE* f, unsigned itemsize, int pagesize)
{
byte* buf = (byte*)malloc(sizeof(byte) * pagesize);
unsigned pagemask = pagesize - 1;
unsigned count;
if((itemsize & pagemask) == 0) {
free(buf);
return 0;
}
count = pagesize - (itemsize & pagemask);
fread(buf, count, 1, f);
free(buf);
return count;
}
void write_string_to_file(char* file, char* string)
{
FILE* f = fopen(file, "w");
fwrite(string, strlen(string), 1, f);
fwrite("\n", 1, 1, f);
fclose(f);
}
int usage() {
printf("usage: unpackbootimg\n");
printf("\t-i|--input boot.img\n");
printf("\t[ -o|--output output_directory]\n");
printf("\t[ -p|--pagesize <size-in-hexadecimal> ]\n");
return 0;
}
int main(int argc, char** argv)
{
char tmp[PATH_MAX];
char* directory = "./";
char* filename = NULL;
int pagesize = 0;
argc--;
argv++;
while(argc > 0){
char *arg = argv[0];
char *val = argv[1];
argc -= 2;
argv += 2;
if(!strcmp(arg, "--input") || !strcmp(arg, "-i")) {
filename = val;
} else if(!strcmp(arg, "--output") || !strcmp(arg, "-o")) {
directory = val;
} else if(!strcmp(arg, "--pagesize") || !strcmp(arg, "-p")) {
pagesize = strtoul(val, 0, 16);
} else {
return usage();
}
}
if (filename == NULL) {
return usage();
}
int total_read = 0;
FILE* f = fopen(filename, "rb");
boot_img_hdr header;
//printf("Reading header...\n");
int i;
for (i = 0; i <= 512; i++) {
fseek(f, i, SEEK_SET);
fread(tmp, BOOT_MAGIC_SIZE, 1, f);
if (memcmp(tmp, BOOT_MAGIC, BOOT_MAGIC_SIZE) == 0)
break;
}
total_read = i;
if (i > 512) {
printf("Android boot magic not found.\n");
return 1;
}
fseek(f, i, SEEK_SET);
printf("Android magic found at: %d\n", i);
fread(&header, sizeof(header), 1, f);
printf("BOARD_KERNEL_CMDLINE %s\n", header.cmdline);
printf("BOARD_KERNEL_BASE %08x\n", header.kernel_addr - 0x00008000);
printf("BOARD_RAMDISK_OFFSET %08x\n", header.ramdisk_addr - header.kernel_addr + 0x00008000);
printf("BOARD_SECOND_OFFSET %08x\n", header.second_addr - header.kernel_addr + 0x00008000);
printf("BOARD_TAGS_OFFSET %08x\n",header.tags_addr - header.kernel_addr + 0x00008000);
printf("BOARD_PAGE_SIZE %d\n", header.page_size);
printf("BOARD_SECOND_SIZE %d\n", header.second_size);
printf("BOARD_DT_SIZE %d\n", header.dt_size);
if (pagesize == 0) {
pagesize = header.page_size;
}
//printf("cmdline...\n");
sprintf(tmp, "%s/%s", directory, basename(filename));
strcat(tmp, "-cmdline");
write_string_to_file(tmp, header.cmdline);
//printf("base...\n");
sprintf(tmp, "%s/%s", directory, basename(filename));
strcat(tmp, "-base");
char basetmp[200];
sprintf(basetmp, "%08x", header.kernel_addr - 0x00008000);
write_string_to_file(tmp, basetmp);
//printf("ramdisk_offset...\n");
sprintf(tmp, "%s/%s", directory, basename(filename));
strcat(tmp, "-ramdisk_offset");
char ramdisktmp[200];
sprintf(ramdisktmp, "%08x", header.ramdisk_addr - header.kernel_addr + 0x00008000);
write_string_to_file(tmp, ramdisktmp);
//printf("second_offset...\n");
sprintf(tmp, "%s/%s", directory, basename(filename));
strcat(tmp, "-second_offset");
char secondtmp[200];
sprintf(secondtmp, "%08x", header.second_addr - header.kernel_addr + 0x00008000);
write_string_to_file(tmp, secondtmp);
//printf("tags_offset...\n");
sprintf(tmp, "%s/%s", directory, basename(filename));
strcat(tmp, "-tags_offset");
char tagstmp[200];
sprintf(tagstmp, "%08x", header.tags_addr - header.kernel_addr + 0x00008000);
write_string_to_file(tmp, tagstmp);
//printf("pagesize...\n");
sprintf(tmp, "%s/%s", directory, basename(filename));
strcat(tmp, "-pagesize");
char pagesizetmp[200];
sprintf(pagesizetmp, "%d", header.page_size);
write_string_to_file(tmp, pagesizetmp);
total_read += sizeof(header);
//printf("total read: %d\n", total_read);
total_read += read_padding(f, sizeof(header), pagesize);
sprintf(tmp, "%s/%s", directory, basename(filename));
strcat(tmp, "-zImage");
FILE *k = fopen(tmp, "wb");
byte* kernel = (byte*)malloc(header.kernel_size);
//printf("Reading kernel...\n");
fread(kernel, header.kernel_size, 1, f);
total_read += header.kernel_size;
fwrite(kernel, header.kernel_size, 1, k);
fclose(k);
//printf("total read: %d\n", header.kernel_size);
total_read += read_padding(f, header.kernel_size, pagesize);
byte* ramdisk = (byte*)malloc(header.ramdisk_size);
//printf("Reading ramdisk...\n");
fread(ramdisk, header.ramdisk_size, 1, f);
total_read += header.ramdisk_size;
sprintf(tmp, "%s/%s", directory, basename(filename));
if(ramdisk[0] == 0x02 && ramdisk[1]== 0x21)
strcat(tmp, "-ramdisk.lz4");
else
strcat(tmp, "-ramdisk.gz");
FILE *r = fopen(tmp, "wb");
fwrite(ramdisk, header.ramdisk_size, 1, r);
fclose(r);
total_read += read_padding(f, header.ramdisk_size, pagesize);
sprintf(tmp, "%s/%s", directory, basename(filename));
strcat(tmp, "-second");
FILE *s = fopen(tmp, "wb");
byte* second = (byte*)malloc(header.second_size);
//printf("Reading second...\n");
fread(second, header.second_size, 1, f);
total_read += header.second_size;
fwrite(second, header.second_size, 1, r);
fclose(s);
total_read += read_padding(f, header.second_size, pagesize);
sprintf(tmp, "%s/%s", directory, basename(filename));
strcat(tmp, "-dt");
FILE *d = fopen(tmp, "wb");
byte* dt = (byte*)malloc(header.dt_size);
//printf("Reading dt...\n");
fread(dt, header.dt_size, 1, f);
total_read += header.dt_size;
fwrite(dt, header.dt_size, 1, r);
fclose(d);
fclose(f);
//printf("Total Read: %d\n", total_read);
return 0;
}
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