1 files changed, 792 insertions, 0 deletions
diff --git a/roms/u-boot/arch/x86/lib/zimage.c b/roms/u-boot/arch/x86/lib/zimage.c
new file mode 100644
index 000000000..90fc8a466
--- /dev/null
+++ b/roms/u-boot/arch/x86/lib/zimage.c
@@ -0,0 +1,792 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2002
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
+ */
+
+/*
+ * Linux x86 zImage and bzImage loading
+ *
+ * based on the procdure described in
+ * linux/Documentation/i386/boot.txt
+ */
+
+#define LOG_CATEGORY	LOGC_BOOT
+
+#include <common.h>
+#include <bootm.h>
+#include <command.h>
+#include <env.h>
+#include <init.h>
+#include <irq_func.h>
+#include <log.h>
+#include <malloc.h>
+#include <acpi/acpi_table.h>
+#include <asm/io.h>
+#include <asm/ptrace.h>
+#include <asm/zimage.h>
+#include <asm/byteorder.h>
+#include <asm/bootm.h>
+#include <asm/bootparam.h>
+#include <asm/global_data.h>
+#ifdef CONFIG_SYS_COREBOOT
+#include <asm/arch/timestamp.h>
+#endif
+#include <linux/compiler.h>
+#include <linux/ctype.h>
+#include <linux/libfdt.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Memory lay-out:
+ *
+ * relative to setup_base (which is 0x90000 currently)
+ *
+ *	0x0000-0x7FFF	Real mode kernel
+ *	0x8000-0x8FFF	Stack and heap
+ *	0x9000-0x90FF	Kernel command line
+ */
+#define DEFAULT_SETUP_BASE	0x90000
+#define COMMAND_LINE_OFFSET	0x9000
+#define HEAP_END_OFFSET		0x8e00
+
+#define COMMAND_LINE_SIZE	2048
+
+/**
+ * struct zboot_state - Current state of the boot
+ *
+ * @bzimage_addr: Address of the bzImage to boot
+ * @bzimage_size: Size of the bzImage, or 0 to detect this
+ * @initrd_addr: Address of the initial ramdisk, or 0 if none
+ * @initrd_size: Size of the initial ramdisk, or 0 if none
+ * @load_address: Address where the bzImage is moved before booting, either
+ *	BZIMAGE_LOAD_ADDR or ZIMAGE_LOAD_ADDR
+ * @base_ptr: Pointer to the boot parameters, typically at address
+ *	DEFAULT_SETUP_BASE
+ * @cmdline: Environment variable containing the 'override' command line, or
+ *	NULL to use the one in the setup block
+ */
+struct zboot_state {
+	ulong bzimage_addr;
+	ulong bzimage_size;
+	ulong initrd_addr;
+	ulong initrd_size;
+	ulong load_address;
+	struct boot_params *base_ptr;
+	char *cmdline;
+} state;
+
+enum {
+	ZBOOT_STATE_START	= BIT(0),
+	ZBOOT_STATE_LOAD	= BIT(1),
+	ZBOOT_STATE_SETUP	= BIT(2),
+	ZBOOT_STATE_INFO	= BIT(3),
+	ZBOOT_STATE_GO		= BIT(4),
+
+	/* This one doesn't execute automatically, so stop the count before 5 */
+	ZBOOT_STATE_DUMP	= BIT(5),
+	ZBOOT_STATE_COUNT	= 5,
+};
+
+static void build_command_line(char *command_line, int auto_boot)
+{
+	char *env_command_line;
+
+	command_line[0] = '\0';
+
+	env_command_line =  env_get("bootargs");
+
+	/* set console= argument if we use a serial console */
+	if (!strstr(env_command_line, "console=")) {
+		if (!strcmp(env_get("stdout"), "serial")) {
+
+			/* We seem to use serial console */
+			sprintf(command_line, "console=ttyS0,%s ",
+				env_get("baudrate"));
+		}
+	}
+
+	if (auto_boot)
+		strcat(command_line, "auto ");
+
+	if (env_command_line)
+		strcat(command_line, env_command_line);
+#ifdef DEBUG
+	printf("Kernel command line:");
+	puts(command_line);
+	printf("\n");
+#endif
+}
+
+static int kernel_magic_ok(struct setup_header *hdr)
+{
+	if (KERNEL_MAGIC != hdr->boot_flag) {
+		printf("Error: Invalid Boot Flag "
+			"(found 0x%04x, expected 0x%04x)\n",
+			hdr->boot_flag, KERNEL_MAGIC);
+		return 0;
+	} else {
+		printf("Valid Boot Flag\n");
+		return 1;
+	}
+}
+
+static int get_boot_protocol(struct setup_header *hdr, bool verbose)
+{
+	if (hdr->header == KERNEL_V2_MAGIC) {
+		if (verbose)
+			printf("Magic signature found\n");
+		return hdr->version;
+	} else {
+		/* Very old kernel */
+		if (verbose)
+			printf("Magic signature not found\n");
+		return 0x0100;
+	}
+}
+
+static int setup_device_tree(struct setup_header *hdr, const void *fdt_blob)
+{
+	int bootproto = get_boot_protocol(hdr, false);
+	struct setup_data *sd;
+	int size;
+
+	if (bootproto < 0x0209)
+		return -ENOTSUPP;
+
+	if (!fdt_blob)
+		return 0;
+
+	size = fdt_totalsize(fdt_blob);
+	if (size < 0)
+		return -EINVAL;
+
+	size += sizeof(struct setup_data);
+	sd = (struct setup_data *)malloc(size);
+	if (!sd) {
+		printf("Not enough memory for DTB setup data\n");
+		return -ENOMEM;
+	}
+
+	sd->next = hdr->setup_data;
+	sd->type = SETUP_DTB;
+	sd->len = fdt_totalsize(fdt_blob);
+	memcpy(sd->data, fdt_blob, sd->len);
+	hdr->setup_data = (unsigned long)sd;
+
+	return 0;
+}
+
+static const char *get_kernel_version(struct boot_params *params,
+				      void *kernel_base)
+{
+	struct setup_header *hdr = &params->hdr;
+	int bootproto;
+	const char *s, *end;
+
+	bootproto = get_boot_protocol(hdr, false);
+	if (bootproto < 0x0200 || hdr->setup_sects < 15)
+		return NULL;
+
+	/* sanity-check the kernel version in case it is missing */
+	for (s = kernel_base + hdr->kernel_version + 0x200, end = s + 0x100; *s;
+	     s++) {
+		if (!isprint(*s))
+			return NULL;
+	}
+
+	return kernel_base + hdr->kernel_version + 0x200;
+}
+
+struct boot_params *load_zimage(char *image, unsigned long kernel_size,
+				ulong *load_addressp)
+{
+	struct boot_params *setup_base;
+	const char *version;
+	int setup_size;
+	int bootproto;
+	int big_image;
+
+	struct boot_params *params = (struct boot_params *)image;
+	struct setup_header *hdr = &params->hdr;
+
+	/* base address for real-mode segment */
+	setup_base = (struct boot_params *)DEFAULT_SETUP_BASE;
+
+	if (!kernel_magic_ok(hdr))
+		return 0;
+
+	/* determine size of setup */
+	if (0 == hdr->setup_sects) {
+		log_warning("Setup Sectors = 0 (defaulting to 4)\n");
+		setup_size = 5 * 512;
+	} else {
+		setup_size = (hdr->setup_sects + 1) * 512;
+	}
+
+	log_debug("Setup Size = 0x%8.8lx\n", (ulong)setup_size);
+
+	if (setup_size > SETUP_MAX_SIZE)
+		printf("Error: Setup is too large (%d bytes)\n", setup_size);
+
+	/* determine boot protocol version */
+	bootproto = get_boot_protocol(hdr, true);
+
+	log_debug("Using boot protocol version %x.%02x\n",
+		  (bootproto & 0xff00) >> 8, bootproto & 0xff);
+
+	version = get_kernel_version(params, image);
+	if (version)
+		printf("Linux kernel version %s\n", version);
+	else
+		printf("Setup Sectors < 15 - Cannot print kernel version\n");
+
+	/* Determine image type */
+	big_image = (bootproto >= 0x0200) &&
+		    (hdr->loadflags & BIG_KERNEL_FLAG);
+
+	/* Determine load address */
+	if (big_image)
+		*load_addressp = BZIMAGE_LOAD_ADDR;
+	else
+		*load_addressp = ZIMAGE_LOAD_ADDR;
+
+	printf("Building boot_params at 0x%8.8lx\n", (ulong)setup_base);
+	memset(setup_base, 0, sizeof(*setup_base));
+	setup_base->hdr = params->hdr;
+
+	if (bootproto >= 0x0204)
+		kernel_size = hdr->syssize * 16;
+	else
+		kernel_size -= setup_size;
+
+	if (bootproto == 0x0100) {
+		/*
+		 * A very old kernel MUST have its real-mode code
+		 * loaded at 0x90000
+		 */
+		if ((ulong)setup_base != 0x90000) {
+			/* Copy the real-mode kernel */
+			memmove((void *)0x90000, setup_base, setup_size);
+
+			/* Copy the command line */
+			memmove((void *)0x99000,
+				(u8 *)setup_base + COMMAND_LINE_OFFSET,
+				COMMAND_LINE_SIZE);
+
+			 /* Relocated */
+			setup_base = (struct boot_params *)0x90000;
+		}
+
+		/* It is recommended to clear memory up to the 32K mark */
+		memset((u8 *)0x90000 + setup_size, 0,
+		       SETUP_MAX_SIZE - setup_size);
+	}
+
+	if (big_image) {
+		if (kernel_size > BZIMAGE_MAX_SIZE) {
+			printf("Error: bzImage kernel too big! "
+				"(size: %ld, max: %d)\n",
+				kernel_size, BZIMAGE_MAX_SIZE);
+			return 0;
+		}
+	} else if ((kernel_size) > ZIMAGE_MAX_SIZE) {
+		printf("Error: zImage kernel too big! (size: %ld, max: %d)\n",
+		       kernel_size, ZIMAGE_MAX_SIZE);
+		return 0;
+	}
+
+	printf("Loading %s at address %lx (%ld bytes)\n",
+	       big_image ? "bzImage" : "zImage", *load_addressp, kernel_size);
+
+	memmove((void *)*load_addressp, image + setup_size, kernel_size);
+
+	return setup_base;
+}
+
+int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
+		 ulong initrd_addr, ulong initrd_size, ulong cmdline_force)
+{
+	struct setup_header *hdr = &setup_base->hdr;
+	int bootproto = get_boot_protocol(hdr, false);
+
+	log_debug("Setup E820 entries\n");
+	if (ll_boot_init()) {
+		setup_base->e820_entries = install_e820_map(
+			ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map);
+	} else if (IS_ENABLED(CONFIG_COREBOOT_SYSINFO)) {
+		setup_base->e820_entries = cb_install_e820_map(
+			ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map);
+	}
+
+	if (bootproto == 0x0100) {
+		setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC;
+		setup_base->screen_info.cl_offset = COMMAND_LINE_OFFSET;
+	}
+	if (bootproto >= 0x0200) {
+		hdr->type_of_loader = 0x80;	/* U-Boot version 0 */
+		if (initrd_addr) {
+			printf("Initial RAM disk at linear address "
+			       "0x%08lx, size %ld bytes\n",
+			       initrd_addr, initrd_size);
+
+			hdr->ramdisk_image = initrd_addr;
+			hdr->ramdisk_size = initrd_size;
+		}
+	}
+
+	if (bootproto >= 0x0201) {
+		hdr->heap_end_ptr = HEAP_END_OFFSET;
+		hdr->loadflags |= HEAP_FLAG;
+	}
+
+	if (cmd_line) {
+		int max_size = 0xff;
+		int ret;
+
+		log_debug("Setup cmdline\n");
+		if (bootproto >= 0x0206)
+			max_size = hdr->cmdline_size;
+		if (bootproto >= 0x0202) {
+			hdr->cmd_line_ptr = (uintptr_t)cmd_line;
+		} else if (bootproto >= 0x0200) {
+			setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC;
+			setup_base->screen_info.cl_offset =
+				(uintptr_t)cmd_line - (uintptr_t)setup_base;
+
+			hdr->setup_move_size = 0x9100;
+		}
+
+		/* build command line at COMMAND_LINE_OFFSET */
+		if (cmdline_force)
+			strcpy(cmd_line, (char *)cmdline_force);
+		else
+			build_command_line(cmd_line, auto_boot);
+		ret = bootm_process_cmdline(cmd_line, max_size, BOOTM_CL_ALL);
+		if (ret) {
+			printf("Cmdline setup failed (max_size=%x, bootproto=%x, err=%d)\n",
+			       max_size, bootproto, ret);
+			return ret;
+		}
+		printf("Kernel command line: \"");
+		puts(cmd_line);
+		printf("\"\n");
+	}
+
+	if (IS_ENABLED(CONFIG_INTEL_MID) && bootproto >= 0x0207)
+		hdr->hardware_subarch = X86_SUBARCH_INTEL_MID;
+
+	if (IS_ENABLED(CONFIG_GENERATE_ACPI_TABLE))
+		setup_base->acpi_rsdp_addr = acpi_get_rsdp_addr();
+
+	log_debug("Setup devicetree\n");
+	setup_device_tree(hdr, (const void *)env_get_hex("fdtaddr", 0));
+	setup_video(&setup_base->screen_info);
+
+	if (IS_ENABLED(CONFIG_EFI_STUB))
+		setup_efi_info(&setup_base->efi_info);
+
+	return 0;
+}
+
+static int do_zboot_start(struct cmd_tbl *cmdtp, int flag, int argc,
+			  char *const argv[])
+{
+	const char *s;
+
+	memset(&state, '\0', sizeof(state));
+	if (argc >= 2) {
+		/* argv[1] holds the address of the bzImage */
+		s = argv[1];
+	} else {
+		s = env_get("fileaddr");
+	}
+
+	if (s)
+		state.bzimage_addr = simple_strtoul(s, NULL, 16);
+
+	if (argc >= 3) {
+		/* argv[2] holds the size of the bzImage */
+		state.bzimage_size = simple_strtoul(argv[2], NULL, 16);
+	}
+
+	if (argc >= 4)
+		state.initrd_addr = simple_strtoul(argv[3], NULL, 16);
+	if (argc >= 5)
+		state.initrd_size = simple_strtoul(argv[4], NULL, 16);
+	if (argc >= 6) {
+		/*
+		 * When the base_ptr is passed in, we assume that the image is
+		 * already loaded at the address given by argv[1] and therefore
+		 * the original bzImage is somewhere else, or not accessible.
+		 * In any case, we don't need access to the bzImage since all
+		 * the processing is assumed to be done.
+		 *
+		 * So set the base_ptr to the given address, use this arg as the
+		 * load address and set bzimage_addr to 0 so we know that it
+		 * cannot be proceesed (or processed again).
+		 */
+		state.base_ptr = (void *)simple_strtoul(argv[5], NULL, 16);
+		state.load_address = state.bzimage_addr;
+		state.bzimage_addr = 0;
+	}
+	if (argc >= 7)
+		state.cmdline = env_get(argv[6]);
+
+	return 0;
+}
+
+static int do_zboot_load(struct cmd_tbl *cmdtp, int flag, int argc,
+			 char *const argv[])
+{
+	struct boot_params *base_ptr;
+
+	if (state.base_ptr) {
+		struct boot_params *from = (struct boot_params *)state.base_ptr;
+
+		base_ptr = (struct boot_params *)DEFAULT_SETUP_BASE;
+		log_debug("Building boot_params at 0x%8.8lx\n",
+			  (ulong)base_ptr);
+		memset(base_ptr, '\0', sizeof(*base_ptr));
+		base_ptr->hdr = from->hdr;
+	} else {
+		base_ptr = load_zimage((void *)state.bzimage_addr, state.bzimage_size,
+				       &state.load_address);
+		if (!base_ptr) {
+			puts("## Kernel loading failed ...\n");
+			return CMD_RET_FAILURE;
+		}
+	}
+	state.base_ptr = base_ptr;
+	if (env_set_hex("zbootbase", (ulong)base_ptr) ||
+	    env_set_hex("zbootaddr", state.load_address))
+		return CMD_RET_FAILURE;
+
+	return 0;
+}
+
+static int do_zboot_setup(struct cmd_tbl *cmdtp, int flag, int argc,
+			  char *const argv[])
+{
+	struct boot_params *base_ptr = state.base_ptr;
+	int ret;
+
+	if (!base_ptr) {
+		printf("base is not set: use 'zboot load' first\n");
+		return CMD_RET_FAILURE;
+	}
+	ret = setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET,
+			   0, state.initrd_addr, state.initrd_size,
+			   (ulong)state.cmdline);
+	if (ret) {
+		puts("Setting up boot parameters failed ...\n");
+		return CMD_RET_FAILURE;
+	}
+
+	return 0;
+}
+
+static int do_zboot_info(struct cmd_tbl *cmdtp, int flag, int argc,
+			 char *const argv[])
+{
+	printf("Kernel loaded at %08lx, setup_base=%p\n",
+	       state.load_address, state.base_ptr);
+
+	return 0;
+}
+
+static int do_zboot_go(struct cmd_tbl *cmdtp, int flag, int argc,
+		       char *const argv[])
+{
+	int ret;
+
+	disable_interrupts();
+
+	/* we assume that the kernel is in place */
+	ret = boot_linux_kernel((ulong)state.base_ptr, state.load_address,
+				false);
+	printf("Kernel returned! (err=%d)\n", ret);
+
+	return CMD_RET_FAILURE;
+}
+
+static void print_num(const char *name, ulong value)
+{
+	printf("%-20s: %lx\n", name, value);
+}
+
+static void print_num64(const char *name, u64 value)
+{
+	printf("%-20s: %llx\n", name, value);
+}
+
+static const char *const e820_type_name[E820_COUNT] = {
+	[E820_RAM] = "RAM",
+	[E820_RESERVED] = "Reserved",
+	[E820_ACPI] = "ACPI",
+	[E820_NVS] = "ACPI NVS",
+	[E820_UNUSABLE] = "Unusable",
+};
+
+static const char *const bootloader_id[] = {
+	"LILO",
+	"Loadlin",
+	"bootsect-loader",
+	"Syslinux",
+	"Etherboot/gPXE/iPXE",
+	"ELILO",
+	"undefined",
+	"GRUB",
+	"U-Boot",
+	"Xen",
+	"Gujin",
+	"Qemu",
+	"Arcturus Networks uCbootloader",
+	"kexec-tools",
+	"Extended",
+	"Special",
+	"Reserved",
+	"Minimal Linux Bootloader",
+	"OVMF UEFI virtualization stack",
+};
+
+struct flag_info {
+	uint bit;
+	const char *name;
+};
+
+static struct flag_info load_flags[] = {
+	{ LOADED_HIGH, "loaded-high" },
+	{ QUIET_FLAG, "quiet" },
+	{ KEEP_SEGMENTS, "keep-segments" },
+	{ CAN_USE_HEAP, "can-use-heap" },
+};
+
+static struct flag_info xload_flags[] = {
+	{ XLF_KERNEL_64, "64-bit-entry" },
+	{ XLF_CAN_BE_LOADED_ABOVE_4G, "can-load-above-4gb" },
+	{ XLF_EFI_HANDOVER_32, "32-efi-handoff" },
+	{ XLF_EFI_HANDOVER_64, "64-efi-handoff" },
+	{ XLF_EFI_KEXEC, "kexec-efi-runtime" },
+};
+
+static void print_flags(struct flag_info *flags, int count, uint value)
+{
+	int i;
+
+	printf("%-20s:", "");
+	for (i = 0; i < count; i++) {
+		uint mask = flags[i].bit;
+
+		if (value & mask)
+			printf(" %s", flags[i].name);
+	}
+	printf("\n");
+}
+
+static void show_loader(struct setup_header *hdr)
+{
+	bool version_valid = false;
+	int type, version;
+	const char *name;
+
+	type = hdr->type_of_loader >> 4;
+	version = hdr->type_of_loader & 0xf;
+	if (type == 0xe)
+		type = 0x10 + hdr->ext_loader_type;
+	version |= hdr->ext_loader_ver << 4;
+	if (!hdr->type_of_loader) {
+		name = "pre-2.00 bootloader";
+	} else if (hdr->type_of_loader == 0xff) {
+		name = "unknown";
+	} else if (type < ARRAY_SIZE(bootloader_id)) {
+		name = bootloader_id[type];
+		version_valid = true;
+	} else {
+		name = "undefined";
+	}
+	printf("%20s  %s", "", name);
+	if (version_valid)
+		printf(", version %x", version);
+	printf("\n");
+}
+
+void zimage_dump(struct boot_params *base_ptr)
+{
+	struct setup_header *hdr;
+	const char *version;
+	int i;
+
+	printf("Setup located at %p:\n\n", base_ptr);
+	print_num64("ACPI RSDP addr", base_ptr->acpi_rsdp_addr);
+
+	printf("E820: %d entries\n", base_ptr->e820_entries);
+	if (base_ptr->e820_entries) {
+		printf("%18s  %16s  %s\n", "Addr", "Size", "Type");
+		for (i = 0; i < base_ptr->e820_entries; i++) {
+			struct e820_entry *entry = &base_ptr->e820_map[i];
+
+			printf("%12llx  %10llx  %s\n", entry->addr, entry->size,
+			       entry->type < E820_COUNT ?
+			       e820_type_name[entry->type] :
+			       simple_itoa(entry->type));
+		}
+	}
+
+	hdr = &base_ptr->hdr;
+	print_num("Setup sectors", hdr->setup_sects);
+	print_num("Root flags", hdr->root_flags);
+	print_num("Sys size", hdr->syssize);
+	print_num("RAM size", hdr->ram_size);
+	print_num("Video mode", hdr->vid_mode);
+	print_num("Root dev", hdr->root_dev);
+	print_num("Boot flag", hdr->boot_flag);
+	print_num("Jump", hdr->jump);
+	print_num("Header", hdr->header);
+	if (hdr->header == KERNEL_V2_MAGIC)
+		printf("%-20s  %s\n", "", "Kernel V2");
+	else
+		printf("%-20s  %s\n", "", "Ancient kernel, using version 100");
+	print_num("Version", hdr->version);
+	print_num("Real mode switch", hdr->realmode_swtch);
+	print_num("Start sys", hdr->start_sys);
+	print_num("Kernel version", hdr->kernel_version);
+	version = get_kernel_version(base_ptr, (void *)state.bzimage_addr);
+	if (version)
+		printf("   @%p: %s\n", version, version);
+	print_num("Type of loader", hdr->type_of_loader);
+	show_loader(hdr);
+	print_num("Load flags", hdr->loadflags);
+	print_flags(load_flags, ARRAY_SIZE(load_flags), hdr->loadflags);
+	print_num("Setup move size", hdr->setup_move_size);
+	print_num("Code32 start", hdr->code32_start);
+	print_num("Ramdisk image", hdr->ramdisk_image);
+	print_num("Ramdisk size", hdr->ramdisk_size);
+	print_num("Bootsect kludge", hdr->bootsect_kludge);
+	print_num("Heap end ptr", hdr->heap_end_ptr);
+	print_num("Ext loader ver", hdr->ext_loader_ver);
+	print_num("Ext loader type", hdr->ext_loader_type);
+	print_num("Command line ptr", hdr->cmd_line_ptr);
+	if (hdr->cmd_line_ptr) {
+		printf("   ");
+		/* Use puts() to avoid limits from CONFIG_SYS_PBSIZE */
+		puts((char *)(ulong)hdr->cmd_line_ptr);
+		printf("\n");
+	}
+	print_num("Initrd addr max", hdr->initrd_addr_max);
+	print_num("Kernel alignment", hdr->kernel_alignment);
+	print_num("Relocatable kernel", hdr->relocatable_kernel);
+	print_num("Min alignment", hdr->min_alignment);
+	if (hdr->min_alignment)
+		printf("%-20s: %x\n", "", 1 << hdr->min_alignment);
+	print_num("Xload flags", hdr->xloadflags);
+	print_flags(xload_flags, ARRAY_SIZE(xload_flags), hdr->xloadflags);
+	print_num("Cmdline size", hdr->cmdline_size);
+	print_num("Hardware subarch", hdr->hardware_subarch);
+	print_num64("HW subarch data", hdr->hardware_subarch_data);
+	print_num("Payload offset", hdr->payload_offset);
+	print_num("Payload length", hdr->payload_length);
+	print_num64("Setup data", hdr->setup_data);
+	print_num64("Pref address", hdr->pref_address);
+	print_num("Init size", hdr->init_size);
+	print_num("Handover offset", hdr->handover_offset);
+	if (get_boot_protocol(hdr, false) >= 0x215)
+		print_num("Kernel info offset", hdr->kernel_info_offset);
+}
+
+static int do_zboot_dump(struct cmd_tbl *cmdtp, int flag, int argc,
+			 char *const argv[])
+{
+	struct boot_params *base_ptr = state.base_ptr;
+
+	if (argc > 1)
+		base_ptr = (void *)simple_strtoul(argv[1], NULL, 16);
+	if (!base_ptr) {
+		printf("No zboot setup_base\n");
+		return CMD_RET_FAILURE;
+	}
+	zimage_dump(base_ptr);
+
+	return 0;
+}
+
+/* Note: This defines the complete_zboot() function */
+U_BOOT_SUBCMDS(zboot,
+	U_BOOT_CMD_MKENT(start, 8, 1, do_zboot_start, "", ""),
+	U_BOOT_CMD_MKENT(load, 1, 1, do_zboot_load, "", ""),
+	U_BOOT_CMD_MKENT(setup, 1, 1, do_zboot_setup, "", ""),
+	U_BOOT_CMD_MKENT(info, 1, 1, do_zboot_info, "", ""),
+	U_BOOT_CMD_MKENT(go, 1, 1, do_zboot_go, "", ""),
+	U_BOOT_CMD_MKENT(dump, 2, 1, do_zboot_dump, "", ""),
+)
+
+int do_zboot_states(struct cmd_tbl *cmdtp, int flag, int argc,
+		    char *const argv[], int state_mask)
+{
+	int i;
+
+	for (i = 0; i < ZBOOT_STATE_COUNT; i++) {
+		struct cmd_tbl *cmd = &zboot_subcmds[i];
+		int mask = 1 << i;
+		int ret;
+
+		if (mask & state_mask) {
+			ret = cmd->cmd(cmd, flag, argc, argv);
+			if (ret)
+				return ret;
+		}
+	}
+
+	return 0;
+}
+
+int do_zboot_parent(struct cmd_tbl *cmdtp, int flag, int argc,
+		    char *const argv[], int *repeatable)
+{
+	/* determine if we have a sub command */
+	if (argc > 1) {
+		char *endp;
+
+		simple_strtoul(argv[1], &endp, 16);
+		/*
+		 * endp pointing to nul means that argv[1] was just a valid
+		 * number, so pass it along to the normal processing
+		 */
+		if (*endp)
+			return do_zboot(cmdtp, flag, argc, argv, repeatable);
+	}
+
+	do_zboot_states(cmdtp, flag, argc, argv, ZBOOT_STATE_START |
+			ZBOOT_STATE_LOAD | ZBOOT_STATE_SETUP |
+			ZBOOT_STATE_INFO | ZBOOT_STATE_GO);
+
+	return CMD_RET_FAILURE;
+}
+
+U_BOOT_CMDREP_COMPLETE(
+	zboot, 8, do_zboot_parent, "Boot bzImage",
+	"[addr] [size] [initrd addr] [initrd size] [setup] [cmdline]\n"
+	"      addr -        The optional starting address of the bzimage.\n"
+	"                    If not set it defaults to the environment\n"
+	"                    variable \"fileaddr\".\n"
+	"      size -        The optional size of the bzimage. Defaults to\n"
+	"                    zero.\n"
+	"      initrd addr - The address of the initrd image to use, if any.\n"
+	"      initrd size - The size of the initrd image to use, if any.\n"
+	"      setup -       The address of the kernel setup region, if this\n"
+	"                    is not at addr\n"
+	"      cmdline -     Environment variable containing the kernel\n"
+	"                    command line, to override U-Boot's normal\n"
+	"                    cmdline generation\n"
+	"\n"
+	"Sub-commands to do part of the zboot sequence:\n"
+	"\tstart [addr [arg ...]] - specify arguments\n"
+	"\tload   - load OS image\n"
+	"\tsetup  - set up table\n"
+	"\tinfo   - show summary info\n"
+	"\tgo     - start OS\n"
+	"\tdump [addr]    - dump info (optional address of boot params)",
+	complete_zboot
+);