Initial Contribution

3 files changed, 365 insertions, 0 deletions

diff --git a/mkbootimg/Android.mk b/mkbootimg/Android.mk
new file mode 100644
index 000000000..e44bd99a0
--- /dev/null
+++ b/mkbootimg/Android.mk
@@ -0,0 +1,11 @@
+
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := mkbootimg.c
+
+LOCAL_MODULE := mkbootimg
+
+include $(BUILD_HOST_EXECUTABLE)
+
+$(call dist-for-goals,user userdebug droid,$(LOCAL_BUILT_MODULE))
diff --git a/mkbootimg/bootimg.h b/mkbootimg/bootimg.h
new file mode 100644
index 000000000..242ab35db
--- /dev/null
+++ b/mkbootimg/bootimg.h
@@ -0,0 +1,97 @@
+/* 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 unused[2];    /* 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
+** +-----------------+
+**
+** n = (kernel_size + page_size - 1) / page_size
+** m = (ramdisk_size + page_size - 1) / page_size
+** o = (second_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
diff --git a/mkbootimg/mkbootimg.c b/mkbootimg/mkbootimg.c
new file mode 100644
index 000000000..fa650cfca
--- /dev/null
+++ b/mkbootimg/mkbootimg.c
@@ -0,0 +1,257 @@
+/* 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 <time.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"
+            "       -o|--output <filename>\n"
+            );
+    return 1;
+}
+
+
+
+static unsigned char padding[2048] = { 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;
+    }
+}
+
+unsigned checksum(void *_ptr, unsigned len)
+{
+    unsigned chk = 0;
+    unsigned char *ptr = _ptr;
+    while (len > 0) {
+        chk += *ptr++;
+        len--;
+    }
+    return chk;
+}
+
+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;
+    unsigned saddr = 0;
+    int fd;
+    
+    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, "--saddr")) {
+            saddr = strtoul(val, 0, 16);
+        } else if(!strcmp(arg, "--board")) {
+            board = val;
+        } else {
+            return usage();
+        }
+    }
+
+    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);
+    
+    hdr.kernel_addr =  0x10008000;
+    hdr.ramdisk_addr = 0x11000000;
+    if(saddr) {
+        hdr.second_addr =  0x00300000;
+    } else {
+        hdr.second_addr =  0x10F00000;
+    }
+    hdr.tags_addr   =  0x10000100;
+    hdr.page_size = pagesize;
+    
+    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 some stuff in the header to differentiate between
+         * different boot images.  SHA1 would be nicer, but this
+         * isn't for crypto grade anything, just to have a quick
+         * way to compare boot.imgs based on their first 2k
+         */
+    hdr.id[0] = (unsigned) time(0);
+    hdr.id[1] = checksum(kernel_data, hdr.kernel_size);
+    hdr.id[2] = checksum(ramdisk_data, hdr.ramdisk_size);
+    hdr.id[3] = checksum(second_data, hdr.second_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;
+}
+