From 19a91f2464a89402a925fd4a2d8b7e28c804c7cc Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Thu, 14 Oct 2021 12:47:54 -0600 Subject: Create a new boot/ directory Quite a lot of the code in common/relates to booting and images. Before adding more it seems like a good time to move the code into its own directory. Most files with 'boot' or 'image' in them are moved, except: - autoboot.c which relates to U-Boot automatically running a script - bootstage.c which relates to U-Boot timing Drop the removal of boot* files from the output directory, since this interfers with the symlinks created by tools and there does not appear to be any such file from my brief testing. Signed-off-by: Simon Glass Reviewed-by: Artem Lapkin Tested-by: Artem Lapkin --- boot/bootm.c | 1038 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1038 insertions(+) create mode 100644 boot/bootm.c (limited to 'boot/bootm.c') diff --git a/boot/bootm.c b/boot/bootm.c new file mode 100644 index 0000000000..4482f84b40 --- /dev/null +++ b/boot/bootm.c @@ -0,0 +1,1038 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2000-2009 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + */ + +#ifndef USE_HOSTCC +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#if defined(CONFIG_CMD_USB) +#include +#endif +#else +#include "mkimage.h" +#endif + +#include +#include +#include + +#ifndef CONFIG_SYS_BOOTM_LEN +/* use 8MByte as default max gunzip size */ +#define CONFIG_SYS_BOOTM_LEN 0x800000 +#endif + +#define MAX_CMDLINE_SIZE SZ_4K + +#define IH_INITRD_ARCH IH_ARCH_DEFAULT + +#ifndef USE_HOSTCC + +DECLARE_GLOBAL_DATA_PTR; + +bootm_headers_t images; /* pointers to os/initrd/fdt images */ + +static const void *boot_get_kernel(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[], bootm_headers_t *images, + ulong *os_data, ulong *os_len); + +__weak void board_quiesce_devices(void) +{ +} + +#ifdef CONFIG_LMB +static void boot_start_lmb(bootm_headers_t *images) +{ + ulong mem_start; + phys_size_t mem_size; + + mem_start = env_get_bootm_low(); + mem_size = env_get_bootm_size(); + + lmb_init_and_reserve_range(&images->lmb, (phys_addr_t)mem_start, + mem_size, NULL); +} +#else +#define lmb_reserve(lmb, base, size) +static inline void boot_start_lmb(bootm_headers_t *images) { } +#endif + +static int bootm_start(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + memset((void *)&images, 0, sizeof(images)); + images.verify = env_get_yesno("verify"); + + boot_start_lmb(&images); + + bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start"); + images.state = BOOTM_STATE_START; + + return 0; +} + +static int bootm_find_os(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + const void *os_hdr; + bool ep_found = false; + int ret; + + /* get kernel image header, start address and length */ + os_hdr = boot_get_kernel(cmdtp, flag, argc, argv, + &images, &images.os.image_start, &images.os.image_len); + if (images.os.image_len == 0) { + puts("ERROR: can't get kernel image!\n"); + return 1; + } + + /* get image parameters */ + switch (genimg_get_format(os_hdr)) { +#if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT) + case IMAGE_FORMAT_LEGACY: + images.os.type = image_get_type(os_hdr); + images.os.comp = image_get_comp(os_hdr); + images.os.os = image_get_os(os_hdr); + + images.os.end = image_get_image_end(os_hdr); + images.os.load = image_get_load(os_hdr); + images.os.arch = image_get_arch(os_hdr); + break; +#endif +#if CONFIG_IS_ENABLED(FIT) + case IMAGE_FORMAT_FIT: + if (fit_image_get_type(images.fit_hdr_os, + images.fit_noffset_os, + &images.os.type)) { + puts("Can't get image type!\n"); + bootstage_error(BOOTSTAGE_ID_FIT_TYPE); + return 1; + } + + if (fit_image_get_comp(images.fit_hdr_os, + images.fit_noffset_os, + &images.os.comp)) { + puts("Can't get image compression!\n"); + bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION); + return 1; + } + + if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os, + &images.os.os)) { + puts("Can't get image OS!\n"); + bootstage_error(BOOTSTAGE_ID_FIT_OS); + return 1; + } + + if (fit_image_get_arch(images.fit_hdr_os, + images.fit_noffset_os, + &images.os.arch)) { + puts("Can't get image ARCH!\n"); + return 1; + } + + images.os.end = fit_get_end(images.fit_hdr_os); + + if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os, + &images.os.load)) { + puts("Can't get image load address!\n"); + bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR); + return 1; + } + break; +#endif +#ifdef CONFIG_ANDROID_BOOT_IMAGE + case IMAGE_FORMAT_ANDROID: + images.os.type = IH_TYPE_KERNEL; + images.os.comp = android_image_get_kcomp(os_hdr); + images.os.os = IH_OS_LINUX; + + images.os.end = android_image_get_end(os_hdr); + images.os.load = android_image_get_kload(os_hdr); + images.ep = images.os.load; + ep_found = true; + break; +#endif + default: + puts("ERROR: unknown image format type!\n"); + return 1; + } + + /* If we have a valid setup.bin, we will use that for entry (x86) */ + if (images.os.arch == IH_ARCH_I386 || + images.os.arch == IH_ARCH_X86_64) { + ulong len; + + ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len); + if (ret < 0 && ret != -ENOENT) { + puts("Could not find a valid setup.bin for x86\n"); + return 1; + } + /* Kernel entry point is the setup.bin */ + } else if (images.legacy_hdr_valid) { + images.ep = image_get_ep(&images.legacy_hdr_os_copy); +#if CONFIG_IS_ENABLED(FIT) + } else if (images.fit_uname_os) { + int ret; + + ret = fit_image_get_entry(images.fit_hdr_os, + images.fit_noffset_os, &images.ep); + if (ret) { + puts("Can't get entry point property!\n"); + return 1; + } +#endif + } else if (!ep_found) { + puts("Could not find kernel entry point!\n"); + return 1; + } + + if (images.os.type == IH_TYPE_KERNEL_NOLOAD) { + if (CONFIG_IS_ENABLED(CMD_BOOTI) && + images.os.arch == IH_ARCH_ARM64) { + ulong image_addr; + ulong image_size; + + ret = booti_setup(images.os.image_start, &image_addr, + &image_size, true); + if (ret != 0) + return 1; + + images.os.type = IH_TYPE_KERNEL; + images.os.load = image_addr; + images.ep = image_addr; + } else { + images.os.load = images.os.image_start; + images.ep += images.os.image_start; + } + } + + images.os.start = map_to_sysmem(os_hdr); + + return 0; +} + +/** + * bootm_find_images - wrapper to find and locate various images + * @flag: Ignored Argument + * @argc: command argument count + * @argv: command argument list + * @start: OS image start address + * @size: OS image size + * + * boot_find_images() will attempt to load an available ramdisk, + * flattened device tree, as well as specifically marked + * "loadable" images (loadables are FIT only) + * + * Note: bootm_find_images will skip an image if it is not found + * + * @return: + * 0, if all existing images were loaded correctly + * 1, if an image is found but corrupted, or invalid + */ +int bootm_find_images(int flag, int argc, char *const argv[], ulong start, + ulong size) +{ + int ret; + + /* find ramdisk */ + ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH, + &images.rd_start, &images.rd_end); + if (ret) { + puts("Ramdisk image is corrupt or invalid\n"); + return 1; + } + + /* check if ramdisk overlaps OS image */ + if (images.rd_start && (((ulong)images.rd_start >= start && + (ulong)images.rd_start < start + size) || + ((ulong)images.rd_end > start && + (ulong)images.rd_end <= start + size) || + ((ulong)images.rd_start < start && + (ulong)images.rd_end >= start + size))) { + printf("ERROR: RD image overlaps OS image (OS=0x%lx..0x%lx)\n", + start, start + size); + return 1; + } + +#if CONFIG_IS_ENABLED(OF_LIBFDT) + /* find flattened device tree */ + ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images, + &images.ft_addr, &images.ft_len); + if (ret) { + puts("Could not find a valid device tree\n"); + return 1; + } + + /* check if FDT overlaps OS image */ + if (images.ft_addr && + (((ulong)images.ft_addr >= start && + (ulong)images.ft_addr <= start + size) || + ((ulong)images.ft_addr + images.ft_len >= start && + (ulong)images.ft_addr + images.ft_len <= start + size))) { + printf("ERROR: FDT image overlaps OS image (OS=0x%lx..0x%lx)\n", + start, start + size); + return 1; + } + + if (CONFIG_IS_ENABLED(CMD_FDT)) + set_working_fdt_addr(map_to_sysmem(images.ft_addr)); +#endif + +#if CONFIG_IS_ENABLED(FIT) + if (IS_ENABLED(CONFIG_FPGA)) { + /* find bitstreams */ + ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT, + NULL, NULL); + if (ret) { + printf("FPGA image is corrupted or invalid\n"); + return 1; + } + } + + /* find all of the loadables */ + ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT, + NULL, NULL); + if (ret) { + printf("Loadable(s) is corrupt or invalid\n"); + return 1; + } +#endif + + return 0; +} + +static int bootm_find_other(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + if (((images.os.type == IH_TYPE_KERNEL) || + (images.os.type == IH_TYPE_KERNEL_NOLOAD) || + (images.os.type == IH_TYPE_MULTI)) && + (images.os.os == IH_OS_LINUX || + images.os.os == IH_OS_VXWORKS)) + return bootm_find_images(flag, argc, argv, 0, 0); + + return 0; +} +#endif /* USE_HOSTC */ + +#if !defined(USE_HOSTCC) || defined(CONFIG_FIT_SIGNATURE) +/** + * handle_decomp_error() - display a decompression error + * + * This function tries to produce a useful message. In the case where the + * uncompressed size is the same as the available space, we can assume that + * the image is too large for the buffer. + * + * @comp_type: Compression type being used (IH_COMP_...) + * @uncomp_size: Number of bytes uncompressed + * @ret: errno error code received from compression library + * @return Appropriate BOOTM_ERR_ error code + */ +static int handle_decomp_error(int comp_type, size_t uncomp_size, int ret) +{ + const char *name = genimg_get_comp_name(comp_type); + + /* ENOSYS means unimplemented compression type, don't reset. */ + if (ret == -ENOSYS) + return BOOTM_ERR_UNIMPLEMENTED; + + if (uncomp_size >= CONFIG_SYS_BOOTM_LEN) + printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n"); + else + printf("%s: uncompress error %d\n", name, ret); + + /* + * The decompression routines are now safe, so will not write beyond + * their bounds. Probably it is not necessary to reset, but maintain + * the current behaviour for now. + */ + printf("Must RESET board to recover\n"); +#ifndef USE_HOSTCC + bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); +#endif + + return BOOTM_ERR_RESET; +} +#endif + +#ifndef USE_HOSTCC +static int bootm_load_os(bootm_headers_t *images, int boot_progress) +{ + image_info_t os = images->os; + ulong load = os.load; + ulong load_end; + ulong blob_start = os.start; + ulong blob_end = os.end; + ulong image_start = os.image_start; + ulong image_len = os.image_len; + ulong flush_start = ALIGN_DOWN(load, ARCH_DMA_MINALIGN); + bool no_overlap; + void *load_buf, *image_buf; + int err; + + load_buf = map_sysmem(load, 0); + image_buf = map_sysmem(os.image_start, image_len); + err = image_decomp(os.comp, load, os.image_start, os.type, + load_buf, image_buf, image_len, + CONFIG_SYS_BOOTM_LEN, &load_end); + if (err) { + err = handle_decomp_error(os.comp, load_end - load, err); + bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE); + return err; + } + /* We need the decompressed image size in the next steps */ + images->os.image_len = load_end - load; + + flush_cache(flush_start, ALIGN(load_end, ARCH_DMA_MINALIGN) - flush_start); + + debug(" kernel loaded at 0x%08lx, end = 0x%08lx\n", load, load_end); + bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED); + + no_overlap = (os.comp == IH_COMP_NONE && load == image_start); + + if (!no_overlap && load < blob_end && load_end > blob_start) { + debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n", + blob_start, blob_end); + debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load, + load_end); + + /* Check what type of image this is. */ + if (images->legacy_hdr_valid) { + if (image_get_type(&images->legacy_hdr_os_copy) + == IH_TYPE_MULTI) + puts("WARNING: legacy format multi component image overwritten\n"); + return BOOTM_ERR_OVERLAP; + } else { + puts("ERROR: new format image overwritten - must RESET the board to recover\n"); + bootstage_error(BOOTSTAGE_ID_OVERWRITTEN); + return BOOTM_ERR_RESET; + } + } + + lmb_reserve(&images->lmb, images->os.load, (load_end - + images->os.load)); + return 0; +} + +/** + * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot + * + * @return interrupt flag (0 if interrupts were disabled, non-zero if they were + * enabled) + */ +ulong bootm_disable_interrupts(void) +{ + ulong iflag; + + /* + * We have reached the point of no return: we are going to + * overwrite all exception vector code, so we cannot easily + * recover from any failures any more... + */ + iflag = disable_interrupts(); +#ifdef CONFIG_NETCONSOLE + /* Stop the ethernet stack if NetConsole could have left it up */ + eth_halt(); +# ifndef CONFIG_DM_ETH + eth_unregister(eth_get_dev()); +# endif +#endif + +#if defined(CONFIG_CMD_USB) + /* + * turn off USB to prevent the host controller from writing to the + * SDRAM while Linux is booting. This could happen (at least for OHCI + * controller), because the HCCA (Host Controller Communication Area) + * lies within the SDRAM and the host controller writes continously to + * this area (as busmaster!). The HccaFrameNumber is for example + * updated every 1 ms within the HCCA structure in SDRAM! For more + * details see the OpenHCI specification. + */ + usb_stop(); +#endif + return iflag; +} + +#define CONSOLE_ARG "console=" +#define CONSOLE_ARG_SIZE sizeof(CONSOLE_ARG) + +/** + * fixup_silent_linux() - Handle silencing the linux boot if required + * + * This uses the silent_linux envvar to control whether to add/set a "console=" + * parameter to the command line + * + * @buf: Buffer containing the string to process + * @maxlen: Maximum length of buffer + * @return 0 if OK, -ENOSPC if @maxlen is too small + */ +static int fixup_silent_linux(char *buf, int maxlen) +{ + int want_silent; + char *cmdline; + int size; + + /* + * Move the input string to the end of buffer. The output string will be + * built up at the start. + */ + size = strlen(buf) + 1; + if (size * 2 > maxlen) + return -ENOSPC; + cmdline = buf + maxlen - size; + memmove(cmdline, buf, size); + /* + * Only fix cmdline when requested. The environment variable can be: + * + * no - we never fixup + * yes - we always fixup + * unset - we rely on the console silent flag + */ + want_silent = env_get_yesno("silent_linux"); + if (want_silent == 0) + return 0; + else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT)) + return 0; + + debug("before silent fix-up: %s\n", cmdline); + if (*cmdline) { + char *start = strstr(cmdline, CONSOLE_ARG); + + /* Check space for maximum possible new command line */ + if (size + CONSOLE_ARG_SIZE > maxlen) + return -ENOSPC; + + if (start) { + char *end = strchr(start, ' '); + int start_bytes; + + start_bytes = start - cmdline + CONSOLE_ARG_SIZE - 1; + strncpy(buf, cmdline, start_bytes); + if (end) + strcpy(buf + start_bytes, end); + else + buf[start_bytes] = '\0'; + } else { + sprintf(buf, "%s %s", cmdline, CONSOLE_ARG); + } + if (buf + strlen(buf) >= cmdline) + return -ENOSPC; + } else { + if (maxlen < sizeof(CONSOLE_ARG)) + return -ENOSPC; + strcpy(buf, CONSOLE_ARG); + } + debug("after silent fix-up: %s\n", buf); + + return 0; +} + +/** + * process_subst() - Handle substitution of ${...} fields in the environment + * + * Handle variable substitution in the provided buffer + * + * @buf: Buffer containing the string to process + * @maxlen: Maximum length of buffer + * @return 0 if OK, -ENOSPC if @maxlen is too small + */ +static int process_subst(char *buf, int maxlen) +{ + char *cmdline; + int size; + int ret; + + /* Move to end of buffer */ + size = strlen(buf) + 1; + cmdline = buf + maxlen - size; + if (buf + size > cmdline) + return -ENOSPC; + memmove(cmdline, buf, size); + + ret = cli_simple_process_macros(cmdline, buf, cmdline - buf); + + return ret; +} + +int bootm_process_cmdline(char *buf, int maxlen, int flags) +{ + int ret; + + /* Check config first to enable compiler to eliminate code */ + if (IS_ENABLED(CONFIG_SILENT_CONSOLE) && + !IS_ENABLED(CONFIG_SILENT_U_BOOT_ONLY) && + (flags & BOOTM_CL_SILENT)) { + ret = fixup_silent_linux(buf, maxlen); + if (ret) + return log_msg_ret("silent", ret); + } + if (IS_ENABLED(CONFIG_BOOTARGS_SUBST) && IS_ENABLED(CONFIG_CMDLINE) && + (flags & BOOTM_CL_SUBST)) { + ret = process_subst(buf, maxlen); + if (ret) + return log_msg_ret("subst", ret); + } + + return 0; +} + +int bootm_process_cmdline_env(int flags) +{ + const int maxlen = MAX_CMDLINE_SIZE; + bool do_silent; + const char *env; + char *buf; + int ret; + + /* First check if any action is needed */ + do_silent = IS_ENABLED(CONFIG_SILENT_CONSOLE) && + !IS_ENABLED(CONFIG_SILENT_U_BOOT_ONLY) && (flags & BOOTM_CL_SILENT); + if (!do_silent && !IS_ENABLED(CONFIG_BOOTARGS_SUBST)) + return 0; + + env = env_get("bootargs"); + if (env && strlen(env) >= maxlen) + return -E2BIG; + buf = malloc(maxlen); + if (!buf) + return -ENOMEM; + if (env) + strcpy(buf, env); + else + *buf = '\0'; + ret = bootm_process_cmdline(buf, maxlen, flags); + if (!ret) { + ret = env_set("bootargs", buf); + + /* + * If buf is "" and bootargs does not exist, this will produce + * an error trying to delete bootargs. Ignore it + */ + if (ret == -ENOENT) + ret = 0; + } + free(buf); + if (ret) + return log_msg_ret("env", ret); + + return 0; +} + +/** + * Execute selected states of the bootm command. + * + * Note the arguments to this state must be the first argument, Any 'bootm' + * or sub-command arguments must have already been taken. + * + * Note that if states contains more than one flag it MUST contain + * BOOTM_STATE_START, since this handles and consumes the command line args. + * + * Also note that aside from boot_os_fn functions and bootm_load_os no other + * functions we store the return value of in 'ret' may use a negative return + * value, without special handling. + * + * @param cmdtp Pointer to bootm command table entry + * @param flag Command flags (CMD_FLAG_...) + * @param argc Number of subcommand arguments (0 = no arguments) + * @param argv Arguments + * @param states Mask containing states to run (BOOTM_STATE_...) + * @param images Image header information + * @param boot_progress 1 to show boot progress, 0 to not do this + * @return 0 if ok, something else on error. Some errors will cause this + * function to perform a reboot! If states contains BOOTM_STATE_OS_GO + * then the intent is to boot an OS, so this function will not return + * unless the image type is standalone. + */ +int do_bootm_states(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[], int states, bootm_headers_t *images, + int boot_progress) +{ + boot_os_fn *boot_fn; + ulong iflag = 0; + int ret = 0, need_boot_fn; + + images->state |= states; + + /* + * Work through the states and see how far we get. We stop on + * any error. + */ + if (states & BOOTM_STATE_START) + ret = bootm_start(cmdtp, flag, argc, argv); + + if (!ret && (states & BOOTM_STATE_FINDOS)) + ret = bootm_find_os(cmdtp, flag, argc, argv); + + if (!ret && (states & BOOTM_STATE_FINDOTHER)) + ret = bootm_find_other(cmdtp, flag, argc, argv); + + /* Load the OS */ + if (!ret && (states & BOOTM_STATE_LOADOS)) { + iflag = bootm_disable_interrupts(); + ret = bootm_load_os(images, 0); + if (ret && ret != BOOTM_ERR_OVERLAP) + goto err; + else if (ret == BOOTM_ERR_OVERLAP) + ret = 0; + } + + /* Relocate the ramdisk */ +#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH + if (!ret && (states & BOOTM_STATE_RAMDISK)) { + ulong rd_len = images->rd_end - images->rd_start; + + ret = boot_ramdisk_high(&images->lmb, images->rd_start, + rd_len, &images->initrd_start, &images->initrd_end); + if (!ret) { + env_set_hex("initrd_start", images->initrd_start); + env_set_hex("initrd_end", images->initrd_end); + } + } +#endif +#if CONFIG_IS_ENABLED(OF_LIBFDT) && defined(CONFIG_LMB) + if (!ret && (states & BOOTM_STATE_FDT)) { + boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr); + ret = boot_relocate_fdt(&images->lmb, &images->ft_addr, + &images->ft_len); + } +#endif + + /* From now on, we need the OS boot function */ + if (ret) + return ret; + boot_fn = bootm_os_get_boot_func(images->os.os); + need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE | + BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP | + BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO); + if (boot_fn == NULL && need_boot_fn) { + if (iflag) + enable_interrupts(); + printf("ERROR: booting os '%s' (%d) is not supported\n", + genimg_get_os_name(images->os.os), images->os.os); + bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS); + return 1; + } + + + /* Call various other states that are not generally used */ + if (!ret && (states & BOOTM_STATE_OS_CMDLINE)) + ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images); + if (!ret && (states & BOOTM_STATE_OS_BD_T)) + ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images); + if (!ret && (states & BOOTM_STATE_OS_PREP)) { + ret = bootm_process_cmdline_env(images->os.os == IH_OS_LINUX); + if (ret) { + printf("Cmdline setup failed (err=%d)\n", ret); + ret = CMD_RET_FAILURE; + goto err; + } + ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images); + } + +#ifdef CONFIG_TRACE + /* Pretend to run the OS, then run a user command */ + if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) { + char *cmd_list = env_get("fakegocmd"); + + ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO, + images, boot_fn); + if (!ret && cmd_list) + ret = run_command_list(cmd_list, -1, flag); + } +#endif + + /* Check for unsupported subcommand. */ + if (ret) { + puts("subcommand not supported\n"); + return ret; + } + + /* Now run the OS! We hope this doesn't return */ + if (!ret && (states & BOOTM_STATE_OS_GO)) + ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO, + images, boot_fn); + + /* Deal with any fallout */ +err: + if (iflag) + enable_interrupts(); + + if (ret == BOOTM_ERR_UNIMPLEMENTED) + bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL); + else if (ret == BOOTM_ERR_RESET) + do_reset(cmdtp, flag, argc, argv); + + return ret; +} + +#if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT) +/** + * image_get_kernel - verify legacy format kernel image + * @img_addr: in RAM address of the legacy format image to be verified + * @verify: data CRC verification flag + * + * image_get_kernel() verifies legacy image integrity and returns pointer to + * legacy image header if image verification was completed successfully. + * + * returns: + * pointer to a legacy image header if valid image was found + * otherwise return NULL + */ +static image_header_t *image_get_kernel(ulong img_addr, int verify) +{ + image_header_t *hdr = (image_header_t *)img_addr; + + if (!image_check_magic(hdr)) { + puts("Bad Magic Number\n"); + bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC); + return NULL; + } + bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER); + + if (!image_check_hcrc(hdr)) { + puts("Bad Header Checksum\n"); + bootstage_error(BOOTSTAGE_ID_CHECK_HEADER); + return NULL; + } + + bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM); + image_print_contents(hdr); + + if (verify) { + puts(" Verifying Checksum ... "); + if (!image_check_dcrc(hdr)) { + printf("Bad Data CRC\n"); + bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM); + return NULL; + } + puts("OK\n"); + } + bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH); + + if (!image_check_target_arch(hdr)) { + printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr)); + bootstage_error(BOOTSTAGE_ID_CHECK_ARCH); + return NULL; + } + return hdr; +} +#endif + +/** + * boot_get_kernel - find kernel image + * @os_data: pointer to a ulong variable, will hold os data start address + * @os_len: pointer to a ulong variable, will hold os data length + * + * boot_get_kernel() tries to find a kernel image, verifies its integrity + * and locates kernel data. + * + * returns: + * pointer to image header if valid image was found, plus kernel start + * address and length, otherwise NULL + */ +static const void *boot_get_kernel(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[], bootm_headers_t *images, + ulong *os_data, ulong *os_len) +{ +#if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT) + image_header_t *hdr; +#endif + ulong img_addr; + const void *buf; + const char *fit_uname_config = NULL; + const char *fit_uname_kernel = NULL; +#if CONFIG_IS_ENABLED(FIT) + int os_noffset; +#endif + + img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0], + &fit_uname_config, + &fit_uname_kernel); + + bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC); + + /* check image type, for FIT images get FIT kernel node */ + *os_data = *os_len = 0; + buf = map_sysmem(img_addr, 0); + switch (genimg_get_format(buf)) { +#if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT) + case IMAGE_FORMAT_LEGACY: + printf("## Booting kernel from Legacy Image at %08lx ...\n", + img_addr); + hdr = image_get_kernel(img_addr, images->verify); + if (!hdr) + return NULL; + bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE); + + /* get os_data and os_len */ + switch (image_get_type(hdr)) { + case IH_TYPE_KERNEL: + case IH_TYPE_KERNEL_NOLOAD: + *os_data = image_get_data(hdr); + *os_len = image_get_data_size(hdr); + break; + case IH_TYPE_MULTI: + image_multi_getimg(hdr, 0, os_data, os_len); + break; + case IH_TYPE_STANDALONE: + *os_data = image_get_data(hdr); + *os_len = image_get_data_size(hdr); + break; + default: + printf("Wrong Image Type for %s command\n", + cmdtp->name); + bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE); + return NULL; + } + + /* + * copy image header to allow for image overwrites during + * kernel decompression. + */ + memmove(&images->legacy_hdr_os_copy, hdr, + sizeof(image_header_t)); + + /* save pointer to image header */ + images->legacy_hdr_os = hdr; + + images->legacy_hdr_valid = 1; + bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE); + break; +#endif +#if CONFIG_IS_ENABLED(FIT) + case IMAGE_FORMAT_FIT: + os_noffset = fit_image_load(images, img_addr, + &fit_uname_kernel, &fit_uname_config, + IH_ARCH_DEFAULT, IH_TYPE_KERNEL, + BOOTSTAGE_ID_FIT_KERNEL_START, + FIT_LOAD_IGNORED, os_data, os_len); + if (os_noffset < 0) + return NULL; + + images->fit_hdr_os = map_sysmem(img_addr, 0); + images->fit_uname_os = fit_uname_kernel; + images->fit_uname_cfg = fit_uname_config; + images->fit_noffset_os = os_noffset; + break; +#endif +#ifdef CONFIG_ANDROID_BOOT_IMAGE + case IMAGE_FORMAT_ANDROID: + printf("## Booting Android Image at 0x%08lx ...\n", img_addr); + if (android_image_get_kernel(buf, images->verify, + os_data, os_len)) + return NULL; + break; +#endif + default: + printf("Wrong Image Format for %s command\n", cmdtp->name); + bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO); + return NULL; + } + + debug(" kernel data at 0x%08lx, len = 0x%08lx (%ld)\n", + *os_data, *os_len, *os_len); + + return buf; +} + +/** + * switch_to_non_secure_mode() - switch to non-secure mode + * + * This routine is overridden by architectures requiring this feature. + */ +void __weak switch_to_non_secure_mode(void) +{ +} + +#else /* USE_HOSTCC */ + +#if defined(CONFIG_FIT_SIGNATURE) +static int bootm_host_load_image(const void *fit, int req_image_type, + int cfg_noffset) +{ + const char *fit_uname_config = NULL; + ulong data, len; + bootm_headers_t images; + int noffset; + ulong load_end; + uint8_t image_type; + uint8_t imape_comp; + void *load_buf; + int ret; + + fit_uname_config = fdt_get_name(fit, cfg_noffset, NULL); + memset(&images, '\0', sizeof(images)); + images.verify = 1; + noffset = fit_image_load(&images, (ulong)fit, + NULL, &fit_uname_config, + IH_ARCH_DEFAULT, req_image_type, -1, + FIT_LOAD_IGNORED, &data, &len); + if (noffset < 0) + return noffset; + if (fit_image_get_type(fit, noffset, &image_type)) { + puts("Can't get image type!\n"); + return -EINVAL; + } + + if (fit_image_get_comp(fit, noffset, &imape_comp)) { + puts("Can't get image compression!\n"); + return -EINVAL; + } + + /* Allow the image to expand by a factor of 4, should be safe */ + load_buf = malloc((1 << 20) + len * 4); + ret = image_decomp(imape_comp, 0, data, image_type, load_buf, + (void *)data, len, CONFIG_SYS_BOOTM_LEN, + &load_end); + free(load_buf); + + if (ret) { + ret = handle_decomp_error(imape_comp, load_end - 0, ret); + if (ret != BOOTM_ERR_UNIMPLEMENTED) + return ret; + } + + return 0; +} + +int bootm_host_load_images(const void *fit, int cfg_noffset) +{ + static uint8_t image_types[] = { + IH_TYPE_KERNEL, + IH_TYPE_FLATDT, + IH_TYPE_RAMDISK, + }; + int err = 0; + int i; + + for (i = 0; i < ARRAY_SIZE(image_types); i++) { + int ret; + + ret = bootm_host_load_image(fit, image_types[i], cfg_noffset); + if (!err && ret && ret != -ENOENT) + err = ret; + } + + /* Return the first error we found */ + return err; +} +#endif + +#endif /* ndef USE_HOSTCC */ -- cgit v1.2.3