bootm: factor out code to make it usable from C
Much of the bootm code is implemented in the command itself. Move it to a common place to be able to call it from C aswell. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer
parent
40c4e61554
commit
7d58f3f346
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@ -420,6 +420,7 @@ menu "booting"
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config CMD_BOOTM
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tristate
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default y
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select BOOTM
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select CRC32
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select UIMAGE
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select UNCOMPRESS
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281
commands/bootm.c
281
commands/bootm.c
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@ -46,172 +46,11 @@
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#include <magicvar.h>
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#include <asm-generic/memory_layout.h>
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static LIST_HEAD(handler_list);
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/*
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* Additional oftree size for the fixed tree
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*/
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#define OFTREE_SIZE_INCREASE 0x8000
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int register_image_handler(struct image_handler *handler)
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{
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list_add_tail(&handler->list, &handler_list);
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return 0;
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}
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#define UIMAGE_SOME_ADDRESS (UIMAGE_INVALID_ADDRESS - 1)
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static int bootm_open_os_uimage(struct image_data *data)
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{
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int ret;
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data->os = uimage_open(data->os_file);
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if (!data->os)
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return -EINVAL;
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if (data->verify) {
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ret = uimage_verify(data->os);
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if (ret) {
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printf("Checking data crc failed with %s\n",
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strerror(-ret));
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uimage_close(data->os);
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return ret;
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}
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}
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uimage_print_contents(data->os);
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if (data->os->header.ih_arch != IH_ARCH) {
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printf("Unsupported Architecture 0x%x\n",
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data->os->header.ih_arch);
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uimage_close(data->os);
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return -EINVAL;
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}
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if (data->os_address == UIMAGE_SOME_ADDRESS)
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data->os_address = data->os->header.ih_load;
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if (data->os_address != UIMAGE_INVALID_ADDRESS) {
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data->os_res = uimage_load_to_sdram(data->os, 0,
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data->os_address);
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if (!data->os_res) {
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uimage_close(data->os);
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return -ENOMEM;
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}
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}
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return 0;
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}
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static int bootm_open_initrd_uimage(struct image_data *data)
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{
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int ret;
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if (!data->initrd_file)
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return 0;
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if (strcmp(data->os_file, data->initrd_file)) {
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data->initrd = uimage_open(data->initrd_file);
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if (!data->initrd)
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return -EINVAL;
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if (data->verify) {
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ret = uimage_verify(data->initrd);
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if (ret) {
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printf("Checking data crc failed with %s\n",
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strerror(-ret));
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}
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}
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uimage_print_contents(data->initrd);
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} else {
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data->initrd = data->os;
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}
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return 0;
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}
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#ifdef CONFIG_OFTREE
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static int bootm_open_oftree(struct image_data *data, const char *oftree, int num)
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{
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enum filetype ft;
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struct fdt_header *fdt;
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size_t size;
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printf("Loading devicetree from '%s'\n", oftree);
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ft = file_name_detect_type(oftree);
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if ((int)ft < 0) {
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printf("failed to open %s: %s\n", oftree, strerror(-(int)ft));
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return ft;
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}
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if (ft == filetype_uimage) {
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#ifdef CONFIG_CMD_BOOTM_OFTREE_UIMAGE
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struct uimage_handle *of_handle;
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int release = 0;
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if (!strcmp(data->os_file, oftree)) {
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of_handle = data->os;
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} else if (!strcmp(data->initrd_file, oftree)) {
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of_handle = data->initrd;
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} else {
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of_handle = uimage_open(oftree);
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if (!of_handle)
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return -ENODEV;
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uimage_print_contents(of_handle);
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release = 1;
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}
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fdt = uimage_load_to_buf(of_handle, num, &size);
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if (release)
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uimage_close(of_handle);
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#else
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return -EINVAL;
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#endif
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} else {
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fdt = read_file(oftree, &size);
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if (!fdt) {
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perror("open");
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return -ENODEV;
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}
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}
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ft = file_detect_type(fdt, size);
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if (ft != filetype_oftree) {
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printf("%s is not an oftree but %s\n", oftree,
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file_type_to_string(ft));
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}
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data->of_root_node = of_unflatten_dtb(NULL, fdt);
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if (!data->of_root_node) {
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pr_err("unable to unflatten devicetree\n");
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return -EINVAL;
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}
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free(fdt);
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return 0;
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}
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#endif
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static struct image_handler *bootm_find_handler(enum filetype filetype,
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struct image_data *data)
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{
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struct image_handler *handler;
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list_for_each_entry(handler, &handler_list, list) {
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if (filetype != filetype_uimage &&
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handler->filetype == filetype)
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return handler;
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if (filetype == filetype_uimage &&
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handler->ih_os == data->os->header.ih_os)
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return handler;
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}
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return NULL;
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}
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static char *bootm_image_name_and_no(const char *name, int *no)
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{
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char *at, *ret;
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@ -244,12 +83,9 @@ static char *bootm_image_name_and_no(const char *name, int *no)
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static int do_bootm(int argc, char *argv[])
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{
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int opt;
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struct image_handler *handler;
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struct image_data data;
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int ret = 1;
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enum filetype os_type, initrd_type = filetype_unknown;
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const char *oftree = NULL, *initrd_file = NULL, *os_file = NULL;
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int fallback = 0;
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memset(&data, 0, sizeof(struct image_data));
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@ -289,7 +125,7 @@ static int do_bootm(int argc, char *argv[])
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oftree = optarg;
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break;
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case 'f':
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fallback = 1;
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data.force = 1;
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break;
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default:
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break;
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@ -311,124 +147,17 @@ static int do_bootm(int argc, char *argv[])
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oftree = NULL;
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data.os_file = bootm_image_name_and_no(os_file, &data.os_num);
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data.oftree_file = bootm_image_name_and_no(oftree, &data.oftree_num);
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data.initrd_file = bootm_image_name_and_no(initrd_file, &data.initrd_num);
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os_type = file_name_detect_type(data.os_file);
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if ((int)os_type < 0) {
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printf("could not open %s: %s\n", data.os_file,
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strerror(-os_type));
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goto err_out;
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}
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if (!fallback && os_type == filetype_unknown) {
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printf("Unknown OS filetype (try -f)\n");
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goto err_out;
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}
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if (os_type == filetype_uimage) {
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ret = bootm_open_os_uimage(&data);
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if (ret) {
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printf("loading os image failed with %s\n",
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strerror(-ret));
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goto err_out;
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}
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}
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if (IS_ENABLED(CONFIG_CMD_BOOTM_INITRD) && initrd_file) {
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data.initrd_file = bootm_image_name_and_no(initrd_file, &data.initrd_num);
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initrd_type = file_name_detect_type(data.initrd_file);
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if ((int)initrd_type < 0) {
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printf("could not open %s: %s\n", data.initrd_file,
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strerror(-initrd_type));
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goto err_out;
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}
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if (initrd_type == filetype_uimage) {
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ret = bootm_open_initrd_uimage(&data);
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if (ret) {
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printf("loading initrd failed with %s\n",
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strerror(-ret));
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goto err_out;
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}
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}
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}
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printf("\nLoading OS %s '%s'", file_type_to_string(os_type),
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data.os_file);
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if (os_type == filetype_uimage &&
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data.os->header.ih_type == IH_TYPE_MULTI)
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printf(", multifile image %d", data.os_num);
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printf("\n");
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if (bootm_verbose(&data)) {
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if (data.os_res)
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printf("OS image is at 0x%08x-0x%08x\n",
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data.os_res->start,
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data.os_res->end);
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else
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printf("OS image not yet relocated\n");
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if (data.initrd_file) {
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printf("Loading initrd %s '%s'",
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file_type_to_string(initrd_type),
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data.initrd_file);
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if (initrd_type == filetype_uimage &&
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data.initrd->header.ih_type == IH_TYPE_MULTI)
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printf(", multifile image %d", data.initrd_num);
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printf("\n");
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if (data.initrd_res)
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printf("initrd is at 0x%08x-0x%08x\n",
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data.initrd_res->start,
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data.initrd_res->end);
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else
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printf("initrd image not yet relocated\n");
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}
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}
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#ifdef CONFIG_OFTREE
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if (oftree) {
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int oftree_num;
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oftree = bootm_image_name_and_no(oftree, &oftree_num);
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ret = bootm_open_oftree(&data, oftree, oftree_num);
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if (ret)
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goto err_out;
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} else {
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data.of_root_node = of_get_root_node();
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if (data.of_root_node)
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printf("using internal devicetree\n");
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}
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#endif
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if (data.os_address == UIMAGE_SOME_ADDRESS)
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data.os_address = UIMAGE_INVALID_ADDRESS;
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handler = bootm_find_handler(os_type, &data);
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if (!handler) {
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printf("no image handler found for image type %s\n",
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file_type_to_string(os_type));
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if (os_type == filetype_uimage)
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printf("and os type: %d\n", data.os->header.ih_os);
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goto err_out;
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}
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if (bootm_verbose(&data))
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printf("Passing control to %s handler\n", handler->name);
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ret = handler->bootm(&data);
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ret = bootm_boot(&data);
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printf("handler failed with %s\n", strerror(-ret));
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err_out:
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free(data.initrd_file);
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free(data.os_file);
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if (data.os_res)
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release_sdram_region(data.os_res);
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if (data.initrd_res)
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release_sdram_region(data.initrd_res);
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if (data.initrd && data.initrd != data.os)
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uimage_close(data.initrd);
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if (data.os)
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uimage_close(data.os);
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return 1;
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}
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@ -31,6 +31,9 @@ config ENV_HANDLING
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config GENERIC_GPIO
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bool
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config BOOTM
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bool
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config BLOCK
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bool
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@ -42,6 +42,7 @@ obj-$(CONFIG_MODULES) += module.o
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obj-$(CONFIG_FLEXIBLE_BOOTARGS) += bootargs.o
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obj-$(CONFIG_BAREBOX_UPDATE) += bbu.o
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obj-y += bootsource.o
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obj-$(CONFIG_BOOTM) += bootm.o
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extra-$(CONFIG_MODULES) += module.lds
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extra-y += barebox_default_env barebox_default_env.h
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@ -0,0 +1,303 @@
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <common.h>
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#include <boot.h>
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#include <fs.h>
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#include <malloc.h>
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#include <memory.h>
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static LIST_HEAD(handler_list);
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int register_image_handler(struct image_handler *handler)
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{
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list_add_tail(&handler->list, &handler_list);
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return 0;
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}
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static struct image_handler *bootm_find_handler(enum filetype filetype,
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struct image_data *data)
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{
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struct image_handler *handler;
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list_for_each_entry(handler, &handler_list, list) {
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if (filetype != filetype_uimage &&
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handler->filetype == filetype)
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return handler;
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if (filetype == filetype_uimage &&
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handler->ih_os == data->os->header.ih_os)
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return handler;
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}
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return NULL;
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}
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static int bootm_open_os_uimage(struct image_data *data)
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{
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int ret;
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data->os = uimage_open(data->os_file);
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if (!data->os)
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return -EINVAL;
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if (data->verify) {
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ret = uimage_verify(data->os);
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if (ret) {
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printf("Checking data crc failed with %s\n",
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strerror(-ret));
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uimage_close(data->os);
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return ret;
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}
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}
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uimage_print_contents(data->os);
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if (data->os->header.ih_arch != IH_ARCH) {
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printf("Unsupported Architecture 0x%x\n",
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data->os->header.ih_arch);
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uimage_close(data->os);
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return -EINVAL;
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}
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if (data->os_address == UIMAGE_SOME_ADDRESS)
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data->os_address = data->os->header.ih_load;
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if (data->os_address != UIMAGE_INVALID_ADDRESS) {
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data->os_res = uimage_load_to_sdram(data->os, 0,
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data->os_address);
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if (!data->os_res) {
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uimage_close(data->os);
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return -ENOMEM;
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}
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}
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return 0;
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}
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static int bootm_open_initrd_uimage(struct image_data *data)
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{
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int ret;
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if (!data->initrd_file)
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return 0;
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if (strcmp(data->os_file, data->initrd_file)) {
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data->initrd = uimage_open(data->initrd_file);
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if (!data->initrd)
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return -EINVAL;
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if (data->verify) {
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ret = uimage_verify(data->initrd);
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if (ret) {
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printf("Checking data crc failed with %s\n",
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strerror(-ret));
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}
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}
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uimage_print_contents(data->initrd);
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} else {
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data->initrd = data->os;
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}
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return 0;
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}
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static int bootm_open_oftree(struct image_data *data, const char *oftree, int num)
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{
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enum filetype ft;
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struct fdt_header *fdt;
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size_t size;
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printf("Loading devicetree from '%s'\n", oftree);
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ft = file_name_detect_type(oftree);
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if ((int)ft < 0) {
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printf("failed to open %s: %s\n", oftree, strerror(-(int)ft));
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return ft;
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}
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if (ft == filetype_uimage) {
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#ifdef CONFIG_CMD_BOOTM_OFTREE_UIMAGE
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struct uimage_handle *of_handle;
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int release = 0;
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if (!strcmp(data->os_file, oftree)) {
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of_handle = data->os;
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} else if (!strcmp(data->initrd_file, oftree)) {
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of_handle = data->initrd;
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} else {
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of_handle = uimage_open(oftree);
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if (!of_handle)
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return -ENODEV;
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uimage_print_contents(of_handle);
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release = 1;
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}
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fdt = uimage_load_to_buf(of_handle, num, &size);
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||||
|
||||
if (release)
|
||||
uimage_close(of_handle);
|
||||
#else
|
||||
return -EINVAL;
|
||||
#endif
|
||||
} else {
|
||||
fdt = read_file(oftree, &size);
|
||||
if (!fdt) {
|
||||
perror("open");
|
||||
return -ENODEV;
|
||||
}
|
||||
}
|
||||
|
||||
ft = file_detect_type(fdt, size);
|
||||
if (ft != filetype_oftree) {
|
||||
printf("%s is not an oftree but %s\n", oftree,
|
||||
file_type_to_string(ft));
|
||||
}
|
||||
|
||||
data->of_root_node = of_unflatten_dtb(NULL, fdt);
|
||||
if (!data->of_root_node) {
|
||||
pr_err("unable to unflatten devicetree\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
free(fdt);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void bootm_print_info(struct image_data *data)
|
||||
{
|
||||
if (data->os_res)
|
||||
printf("OS image is at 0x%08x-0x%08x\n",
|
||||
data->os_res->start,
|
||||
data->os_res->end);
|
||||
else
|
||||
printf("OS image not yet relocated\n");
|
||||
|
||||
if (data->initrd_file) {
|
||||
enum filetype initrd_type = file_name_detect_type(data->initrd_file);
|
||||
|
||||
printf("Loading initrd %s '%s'",
|
||||
file_type_to_string(initrd_type),
|
||||
data->initrd_file);
|
||||
if (initrd_type == filetype_uimage &&
|
||||
data->initrd->header.ih_type == IH_TYPE_MULTI)
|
||||
printf(", multifile image %d", data->initrd_num);
|
||||
printf("\n");
|
||||
if (data->initrd_res)
|
||||
printf("initrd is at 0x%08x-0x%08x\n",
|
||||
data->initrd_res->start,
|
||||
data->initrd_res->end);
|
||||
else
|
||||
printf("initrd image not yet relocated\n");
|
||||
}
|
||||
}
|
||||
|
||||
int bootm_boot(struct image_data *data)
|
||||
{
|
||||
struct image_handler *handler;
|
||||
int ret;
|
||||
enum filetype os_type, initrd_type = filetype_unknown;
|
||||
|
||||
os_type = file_name_detect_type(data->os_file);
|
||||
if ((int)os_type < 0) {
|
||||
printf("could not open %s: %s\n", data->os_file,
|
||||
strerror(-os_type));
|
||||
ret = (int)os_type;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
if (!data->force && os_type == filetype_unknown) {
|
||||
printf("Unknown OS filetype (try -f)\n");
|
||||
ret = -EINVAL;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
if (os_type == filetype_uimage) {
|
||||
ret = bootm_open_os_uimage(data);
|
||||
if (ret) {
|
||||
printf("loading os image failed with %s\n",
|
||||
strerror(-ret));
|
||||
goto err_out;
|
||||
}
|
||||
}
|
||||
|
||||
if (IS_ENABLED(CONFIG_CMD_BOOTM_INITRD) && data->initrd_file) {
|
||||
|
||||
initrd_type = file_name_detect_type(data->initrd_file);
|
||||
if ((int)initrd_type < 0) {
|
||||
printf("could not open %s: %s\n", data->initrd_file,
|
||||
strerror(-initrd_type));
|
||||
ret = (int)initrd_type;
|
||||
goto err_out;
|
||||
}
|
||||
if (initrd_type == filetype_uimage) {
|
||||
ret = bootm_open_initrd_uimage(data);
|
||||
if (ret) {
|
||||
printf("loading initrd failed with %s\n",
|
||||
strerror(-ret));
|
||||
goto err_out;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
printf("\nLoading OS %s '%s'", file_type_to_string(os_type),
|
||||
data->os_file);
|
||||
if (os_type == filetype_uimage &&
|
||||
data->os->header.ih_type == IH_TYPE_MULTI)
|
||||
printf(", multifile image %d", data->os_num);
|
||||
printf("\n");
|
||||
|
||||
if (IS_ENABLED(CONFIG_OFTREE)) {
|
||||
if (data->oftree_file) {
|
||||
ret = bootm_open_oftree(data, data->oftree_file, data->oftree_num);
|
||||
if (ret)
|
||||
goto err_out;
|
||||
} else {
|
||||
data->of_root_node = of_get_root_node();
|
||||
if (data->of_root_node)
|
||||
printf("using internal devicetree\n");
|
||||
}
|
||||
}
|
||||
|
||||
if (data->os_address == UIMAGE_SOME_ADDRESS)
|
||||
data->os_address = UIMAGE_INVALID_ADDRESS;
|
||||
|
||||
handler = bootm_find_handler(os_type, data);
|
||||
if (!handler) {
|
||||
printf("no image handler found for image type %s\n",
|
||||
file_type_to_string(os_type));
|
||||
if (os_type == filetype_uimage)
|
||||
printf("and os type: %d\n", data->os->header.ih_os);
|
||||
ret = -ENODEV;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
if (bootm_verbose(data)) {
|
||||
bootm_print_info(data);
|
||||
printf("Passing control to %s handler\n", handler->name);
|
||||
}
|
||||
|
||||
ret = handler->bootm(data);
|
||||
err_out:
|
||||
if (data->os_res)
|
||||
release_sdram_region(data->os_res);
|
||||
if (data->initrd_res)
|
||||
release_sdram_region(data->initrd_res);
|
||||
if (data->initrd && data->initrd != data->os)
|
||||
uimage_close(data->initrd);
|
||||
if (data->os)
|
||||
uimage_close(data->os);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -41,11 +41,15 @@ struct image_data {
|
|||
|
||||
unsigned long initrd_address;
|
||||
|
||||
char *oftree_file;
|
||||
int oftree_num;
|
||||
|
||||
struct device_node *of_root_node;
|
||||
struct fdt_header *oftree;
|
||||
|
||||
int verify;
|
||||
int verbose;
|
||||
int force;
|
||||
};
|
||||
|
||||
struct image_handler {
|
||||
|
|
@ -88,4 +92,8 @@ static inline int linux_bootargs_overwrite(const char *bootargs)
|
|||
}
|
||||
#endif
|
||||
|
||||
#define UIMAGE_SOME_ADDRESS (UIMAGE_INVALID_ADDRESS - 1)
|
||||
|
||||
int bootm_boot(struct image_data *);
|
||||
|
||||
#endif /* __BOOT_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue