--- /dev/null
+/* 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"
+ " -o|--output <filename>\n"
+ );
+ return 1;
+}
+
+
+
+static unsigned char padding[4096] = { 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 = "";
+ unsigned pagesize = 2048;
+ int fd;
+ SHA_CTX ctx;
+ uint8_t* sha;
+
+ argc--;
+ argv++;
+
+ memset(&hdr, 0, sizeof(hdr));
+
+ /* default load addresses */
+ hdr.kernel_addr = 0x10008000;
+ hdr.ramdisk_addr = 0x11000000;
+ hdr.second_addr = 0x10F00000;
+ hdr.tags_addr = 0x10000100;
+
+ 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")) {
+ unsigned base = strtoul(val, 0, 16);
+ hdr.kernel_addr = base + 0x00008000;
+ hdr.ramdisk_addr = base + 0x01000000;
+ hdr.second_addr = base + 0x00F00000;
+ hdr.tags_addr = base + 0x00000100;
+ } else if(!strcmp(arg, "--board")) {
+ board = val;
+ } else if(!strcmp(arg,"--pagesize")) {
+ pagesize = strtoul(val, 0, 10);
+ if ((pagesize != 2048) && (pagesize != 4096)) {
+ fprintf(stderr,"error: unsupported page size %d\n", pagesize);
+ return -1;
+ }
+ } else {
+ return usage();
+ }
+ }
+ hdr.page_size = pagesize;
+
+
+ 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;
+ }
+ }
+
+ /* 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));
+ 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;
+ }
+
+ return 0;
+
+fail:
+ unlink(bootimg);
+ close(fd);
+ fprintf(stderr,"error: failed writing '%s': %s\n", bootimg,
+ strerror(errno));
+ return 1;
+}
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