void *load_bootable_image(const char *kernel, const char *ramdisk,
unsigned *sz, const char *cmdline)
{
void *kdata = 0, *rdata = 0;
unsigned ksize = 0, rsize = 0;
void *bdata;
unsigned bsize;
if(kernel == 0) {
fprintf(stderr, "no image specified\n");
return 0;
}
kdata = load_file(kernel, &ksize);
if(kdata == 0) {
fprintf(stderr, "cannot load '%s': %s\n", kernel, strerror(errno));
return 0;
}
/* is this actually a boot image? */
if(!memcmp(kdata, BOOT_MAGIC, BOOT_MAGIC_SIZE)) {
if(cmdline) bootimg_set_cmdline((boot_img_hdr*) kdata, cmdline);
if(ramdisk) {
fprintf(stderr, "cannot boot a boot.img *and* ramdisk\n");
return 0;
}
*sz = ksize;
return kdata;
}
if(ramdisk) {
rdata = load_file(ramdisk, &rsize);
if(rdata == 0) {
fprintf(stderr,"cannot load '%s': %s\n", ramdisk, strerror(errno));
return 0;
}
}
fprintf(stderr,"creating boot image...\n");
bdata = mkbootimg(kdata, ksize, kernel_offset,
rdata, rsize, ramdisk_offset,
0, 0, second_offset,
page_size, base_addr, tags_offset, &bsize);
if(bdata == 0) {
fprintf(stderr,"failed to create boot.img\n");
return 0;
}
if(cmdline) bootimg_set_cmdline((boot_img_hdr*) bdata, cmdline);
fprintf(stderr,"creating boot image - %d bytes\n", bsize);
*sz = bsize;
return bdata;
}
static void* load_bootable_image(const char* kernel, const char* ramdisk,
const char* secondstage, int64_t* sz,
const char* cmdline) {
if (kernel == nullptr) {
fprintf(stderr, "no image specified\n");
return 0;
}
int64_t ksize;
void* kdata = load_file(kernel, &ksize);
if (kdata == nullptr) {
fprintf(stderr, "cannot load '%s': %s\n", kernel, strerror(errno));
return 0;
}
// Is this actually a boot image?
if(!memcmp(kdata, BOOT_MAGIC, BOOT_MAGIC_SIZE)) {
if (cmdline) bootimg_set_cmdline((boot_img_hdr*) kdata, cmdline);
if (ramdisk) {
fprintf(stderr, "cannot boot a boot.img *and* ramdisk\n");
return 0;
}
*sz = ksize;
return kdata;
}
void* rdata = nullptr;
int64_t rsize = 0;
if (ramdisk) {
rdata = load_file(ramdisk, &rsize);
if (rdata == nullptr) {
fprintf(stderr,"cannot load '%s': %s\n", ramdisk, strerror(errno));
return 0;
}
}
void* sdata = nullptr;
int64_t ssize = 0;
if (secondstage) {
sdata = load_file(secondstage, &ssize);
if (sdata == nullptr) {
fprintf(stderr,"cannot load '%s': %s\n", secondstage, strerror(errno));
return 0;
}
}
fprintf(stderr,"creating boot image...\n");
int64_t bsize = 0;
void* bdata = mkbootimg(kdata, ksize, kernel_offset,
rdata, rsize, ramdisk_offset,
sdata, ssize, second_offset,
page_size, base_addr, tags_offset, &bsize);
if (bdata == nullptr) {
fprintf(stderr,"failed to create boot.img\n");
return 0;
}
if (cmdline) bootimg_set_cmdline((boot_img_hdr*) bdata, cmdline);
fprintf(stderr, "creating boot image - %" PRId64 " bytes\n", bsize);
*sz = bsize;
return bdata;
}
