[people/ms/u-boot.git] / common / spl / spl.c

/*
 * (C) Copyright 2010
 * Texas Instruments, <www.ti.com>
 *
 * Aneesh V <aneesh@ti.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <dm.h>
#include <spl.h>
#include <asm/u-boot.h>
#include <nand.h>
#include <fat.h>
#include <version.h>
#include <image.h>
#include <malloc.h>
#include <dm/root.h>
#include <linux/compiler.h>
#include <fdt_support.h>

DECLARE_GLOBAL_DATA_PTR;

#ifndef CONFIG_SYS_UBOOT_START
#define CONFIG_SYS_UBOOT_START	CONFIG_SYS_TEXT_BASE
#endif
#ifndef CONFIG_SYS_MONITOR_LEN
/* Unknown U-Boot size, let's assume it will not be more than 200 KB */
#define CONFIG_SYS_MONITOR_LEN	(200 * 1024)
#endif

u32 *boot_params_ptr = NULL;

/* Define board data structure */
static bd_t bdata __attribute__ ((section(".data")));

/*
 * Board-specific Platform code can reimplement show_boot_progress () if needed
 */
__weak void show_boot_progress(int val) {}

/*
 * Default function to determine if u-boot or the OS should
 * be started. This implementation always returns 1.
 *
 * Please implement your own board specific funcion to do this.
 *
 * RETURN
 * 0 to not start u-boot
 * positive if u-boot should start
 */
#ifdef CONFIG_SPL_OS_BOOT
__weak int spl_start_uboot(void)
{
	puts("SPL: Please implement spl_start_uboot() for your board\n");
	puts("SPL: Direct Linux boot not active!\n");
	return 1;
}

/* weak default platform specific function to initialize
 * dram banks
 */
__weak int dram_init_banksize(void)
{
	return 0;
}

/*
 * Weak default function for arch specific zImage check. Return zero
 * and fill start and end address if image is recognized.
 */
int __weak bootz_setup(ulong image, ulong *start, ulong *end)
{
	 return 1;
}
#endif

void spl_fixup_fdt(void)
{
#if defined(CONFIG_SPL_OF_LIBFDT) && defined(CONFIG_SYS_SPL_ARGS_ADDR)
	void *fdt_blob = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
	int err;

	err = fdt_check_header(fdt_blob);
	if (err < 0) {
		printf("fdt_root: %s\n", fdt_strerror(err));
		return;
	}

	/* fixup the memory dt node */
	err = fdt_shrink_to_minimum(fdt_blob, 0);
	if (err == 0) {
		printf("spl: fdt_shrink_to_minimum err - %d\n", err);
		return;
	}

	err = arch_fixup_fdt(fdt_blob);
	if (err) {
		printf("spl: arch_fixup_fdt err - %d\n", err);
		return;
	}
#endif
}

/*
 * Weak default function for board specific cleanup/preparation before
 * Linux boot. Some boards/platforms might not need it, so just provide
 * an empty stub here.
 */
__weak void spl_board_prepare_for_linux(void)
{
	/* Nothing to do! */
}

__weak void spl_board_prepare_for_boot(void)
{
	/* Nothing to do! */
}

void spl_set_header_raw_uboot(struct spl_image_info *spl_image)
{
	spl_image->size = CONFIG_SYS_MONITOR_LEN;
	spl_image->entry_point = CONFIG_SYS_UBOOT_START;
	spl_image->load_addr = CONFIG_SYS_TEXT_BASE;
	spl_image->os = IH_OS_U_BOOT;
	spl_image->name = "U-Boot";
}

int spl_parse_image_header(struct spl_image_info *spl_image,
			   const struct image_header *header)
{
	if (image_get_magic(header) == IH_MAGIC) {
#ifdef CONFIG_SPL_LEGACY_IMAGE_SUPPORT
		u32 header_size = sizeof(struct image_header);

		if (spl_image->flags & SPL_COPY_PAYLOAD_ONLY) {
			/*
			 * On some system (e.g. powerpc), the load-address and
			 * entry-point is located at address 0. We can't load
			 * to 0-0x40. So skip header in this case.
			 */
			spl_image->load_addr = image_get_load(header);
			spl_image->entry_point = image_get_ep(header);
			spl_image->size = image_get_data_size(header);
		} else {
			spl_image->entry_point = image_get_load(header);
			/* Load including the header */
			spl_image->load_addr = spl_image->entry_point -
				header_size;
			spl_image->size = image_get_data_size(header) +
				header_size;
		}
		spl_image->os = image_get_os(header);
		spl_image->name = image_get_name(header);
		debug("spl: payload image: %.*s load addr: 0x%lx size: %d\n",
			IH_NMLEN, spl_image->name,
			spl_image->load_addr, spl_image->size);
#else
		/* LEGACY image not supported */
		debug("Legacy boot image support not enabled, proceeding to other boot methods\n");
		return -EINVAL;
#endif
	} else {
#ifdef CONFIG_SPL_PANIC_ON_RAW_IMAGE
		/*
		 * CONFIG_SPL_PANIC_ON_RAW_IMAGE is defined when the
		 * code which loads images in SPL cannot guarantee that
		 * absolutely all read errors will be reported.
		 * An example is the LPC32XX MLC NAND driver, which
		 * will consider that a completely unreadable NAND block
		 * is bad, and thus should be skipped silently.
		 */
		panic("** no mkimage signature but raw image not supported");
#endif

#ifdef CONFIG_SPL_OS_BOOT
		ulong start, end;

		if (!bootz_setup((ulong)header, &start, &end)) {
			spl_image->name = "Linux";
			spl_image->os = IH_OS_LINUX;
			spl_image->load_addr = CONFIG_SYS_LOAD_ADDR;
			spl_image->entry_point = CONFIG_SYS_LOAD_ADDR;
			spl_image->size = end - start;
			debug("spl: payload zImage, load addr: 0x%lx size: %d\n",
			      spl_image->load_addr, spl_image->size);
			return 0;
		}
#endif

#ifdef CONFIG_SPL_RAW_IMAGE_SUPPORT
		/* Signature not found - assume u-boot.bin */
		debug("mkimage signature not found - ih_magic = %x\n",
			header->ih_magic);
		spl_set_header_raw_uboot(spl_image);
#else
		/* RAW image not supported, proceed to other boot methods. */
		debug("Raw boot image support not enabled, proceeding to other boot methods\n");
		return -EINVAL;
#endif
	}

	return 0;
}

__weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
{
	typedef void __noreturn (*image_entry_noargs_t)(void);

	image_entry_noargs_t image_entry =
		(image_entry_noargs_t)spl_image->entry_point;

	debug("image entry point: 0x%lX\n", spl_image->entry_point);
	image_entry();
}

static int spl_common_init(bool setup_malloc)
{
	int ret;

	debug("spl_early_init()\n");

#if CONFIG_VAL(SYS_MALLOC_F_LEN)
	if (setup_malloc) {
#ifdef CONFIG_MALLOC_F_ADDR
		gd->malloc_base = CONFIG_MALLOC_F_ADDR;
#endif
		gd->malloc_limit = CONFIG_VAL(SYS_MALLOC_F_LEN);
		gd->malloc_ptr = 0;
	}
#endif
	ret = bootstage_init(true);
	if (ret) {
		debug("%s: Failed to set up bootstage: ret=%d\n", __func__,
		      ret);
		return ret;
	}
	bootstage_mark_name(BOOTSTAGE_ID_START_SPL, "spl");
	if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
		ret = fdtdec_setup();
		if (ret) {
			debug("fdtdec_setup() returned error %d\n", ret);
			return ret;
		}
	}
	if (CONFIG_IS_ENABLED(DM)) {
		bootstage_start(BOOTSTATE_ID_ACCUM_DM_SPL, "dm_spl");
		/* With CONFIG_SPL_OF_PLATDATA, bring in all devices */
		ret = dm_init_and_scan(!CONFIG_IS_ENABLED(OF_PLATDATA));
		bootstage_accum(BOOTSTATE_ID_ACCUM_DM_SPL);
		if (ret) {
			debug("dm_init_and_scan() returned error %d\n", ret);
			return ret;
		}
	}

	return 0;
}

void spl_set_bd(void)
{
	if (!gd->bd)
		gd->bd = &bdata;
}

int spl_early_init(void)
{
	int ret;

	ret = spl_common_init(true);
	if (ret)
		return ret;
	gd->flags |= GD_FLG_SPL_EARLY_INIT;

	return 0;
}

int spl_init(void)
{
	int ret;
	bool setup_malloc = !(IS_ENABLED(CONFIG_SPL_STACK_R) &&
			IS_ENABLED(CONFIG_SPL_SYS_MALLOC_SIMPLE));

	if (!(gd->flags & GD_FLG_SPL_EARLY_INIT)) {
		ret = spl_common_init(setup_malloc);
		if (ret)
			return ret;
	}
	gd->flags |= GD_FLG_SPL_INIT;

	return 0;
}

#ifndef BOOT_DEVICE_NONE
#define BOOT_DEVICE_NONE 0xdeadbeef
#endif

__weak void board_boot_order(u32 *spl_boot_list)
{
	spl_boot_list[0] = spl_boot_device();
}

static struct spl_image_loader *spl_ll_find_loader(uint boot_device)
{
	struct spl_image_loader *drv =
		ll_entry_start(struct spl_image_loader, spl_image_loader);
	const int n_ents =
		ll_entry_count(struct spl_image_loader, spl_image_loader);
	struct spl_image_loader *entry;

	for (entry = drv; entry != drv + n_ents; entry++) {
		if (boot_device == entry->boot_device)
			return entry;
	}

	/* Not found */
	return NULL;
}

static int spl_load_image(struct spl_image_info *spl_image,
			  struct spl_image_loader *loader)
{
	struct spl_boot_device bootdev;

	bootdev.boot_device = loader->boot_device;
	bootdev.boot_device_name = NULL;

	return loader->load_image(spl_image, &bootdev);
}

/**
 * boot_from_devices() - Try loading an booting U-Boot from a list of devices
 *
 * @spl_image: Place to put the image details if successful
 * @spl_boot_list: List of boot devices to try
 * @count: Number of elements in spl_boot_list
 * @return 0 if OK, -ve on error
 */
static int boot_from_devices(struct spl_image_info *spl_image,
			     u32 spl_boot_list[], int count)
{
	int i;

	for (i = 0; i < count && spl_boot_list[i] != BOOT_DEVICE_NONE; i++) {
		struct spl_image_loader *loader;

		loader = spl_ll_find_loader(spl_boot_list[i]);
#if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
		if (loader)
			printf("Trying to boot from %s\n", loader->name);
		else
			puts("SPL: Unsupported Boot Device!\n");
#endif
		if (loader && !spl_load_image(spl_image, loader))
			return 0;
	}

	return -ENODEV;
}

void board_init_r(gd_t *dummy1, ulong dummy2)
{
	u32 spl_boot_list[] = {
		BOOT_DEVICE_NONE,
		BOOT_DEVICE_NONE,
		BOOT_DEVICE_NONE,
		BOOT_DEVICE_NONE,
		BOOT_DEVICE_NONE,
	};
	struct spl_image_info spl_image;

	debug(">>spl:board_init_r()\n");

	spl_set_bd();

#ifdef CONFIG_SPL_OS_BOOT
	dram_init_banksize();
#endif

#if defined(CONFIG_SYS_SPL_MALLOC_START)
	mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
			CONFIG_SYS_SPL_MALLOC_SIZE);
	gd->flags |= GD_FLG_FULL_MALLOC_INIT;
#endif
	if (!(gd->flags & GD_FLG_SPL_INIT)) {
		if (spl_init())
			hang();
	}
#if !defined(CONFIG_PPC) && !defined(CONFIG_ARCH_MX6)
	/*
	 * timer_init() does not exist on PPC systems. The timer is initialized
	 * and enabled (decrementer) in interrupt_init() here.
	 */
	timer_init();
#endif

#ifdef CONFIG_SPL_BOARD_INIT
	spl_board_init();
#endif

	memset(&spl_image, '\0', sizeof(spl_image));
#ifdef CONFIG_SYS_SPL_ARGS_ADDR
	spl_image.arg = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
#endif
	board_boot_order(spl_boot_list);

	if (boot_from_devices(&spl_image, spl_boot_list,
			      ARRAY_SIZE(spl_boot_list))) {
		puts("SPL: failed to boot from all boot devices\n");
		hang();
	}

#ifdef CONFIG_CPU_V7M
	spl_image.entry_point |= 0x1;
#endif
	switch (spl_image.os) {
	case IH_OS_U_BOOT:
		debug("Jumping to U-Boot\n");
		break;
#ifdef CONFIG_SPL_OS_BOOT
	case IH_OS_LINUX:
		debug("Jumping to Linux\n");
		spl_fixup_fdt();
		spl_board_prepare_for_linux();
		jump_to_image_linux(&spl_image);
#endif
	default:
		debug("Unsupported OS image.. Jumping nevertheless..\n");
	}
#if CONFIG_VAL(SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE)
	debug("SPL malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
	      gd->malloc_ptr / 1024);
#endif
#ifdef CONFIG_BOOTSTAGE_STASH
	int ret;

	bootstage_mark_name(BOOTSTAGE_ID_END_SPL, "end_spl");
	ret = bootstage_stash((void *)CONFIG_BOOTSTAGE_STASH_ADDR,
			      CONFIG_BOOTSTAGE_STASH_SIZE);
	if (ret)
		debug("Failed to stash bootstage: err=%d\n", ret);
#endif

	if (CONFIG_IS_ENABLED(ATF_SUPPORT)) {
		debug("loaded - jumping to U-Boot via ATF BL31.\n");
		bl31_entry();
	}

	debug("loaded - jumping to U-Boot...\n");
	spl_board_prepare_for_boot();
	jump_to_image_no_args(&spl_image);
}

/*
 * This requires UART clocks to be enabled.  In order for this to work the
 * caller must ensure that the gd pointer is valid.
 */
void preloader_console_init(void)
{
	gd->baudrate = CONFIG_BAUDRATE;

	serial_init();		/* serial communications setup */

	gd->have_console = 1;

	puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
			U_BOOT_TIME ")\n");
#ifdef CONFIG_SPL_DISPLAY_PRINT
	spl_display_print();
#endif
}

/**
 * spl_relocate_stack_gd() - Relocate stack ready for board_init_r() execution
 *
 * Sometimes board_init_f() runs with a stack in SRAM but we want to use SDRAM
 * for the main board_init_r() execution. This is typically because we need
 * more stack space for things like the MMC sub-system.
 *
 * This function calculates the stack position, copies the global_data into
 * place, sets the new gd (except for ARM, for which setting GD within a C
 * function may not always work) and returns the new stack position. The
 * caller is responsible for setting up the sp register and, in the case
 * of ARM, setting up gd.
 *
 * All of this is done using the same layout and alignments as done in
 * board_init_f_init_reserve() / board_init_f_alloc_reserve().
 *
 * @return new stack location, or 0 to use the same stack
 */
ulong spl_relocate_stack_gd(void)
{
#ifdef CONFIG_SPL_STACK_R
	gd_t *new_gd;
	ulong ptr = CONFIG_SPL_STACK_R_ADDR;

#if defined(CONFIG_SPL_SYS_MALLOC_SIMPLE) && CONFIG_VAL(SYS_MALLOC_F_LEN)
	if (CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN) {
		ptr -= CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
		gd->malloc_base = ptr;
		gd->malloc_limit = CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
		gd->malloc_ptr = 0;
	}
#endif
	/* Get stack position: use 8-byte alignment for ABI compliance */
	ptr = CONFIG_SPL_STACK_R_ADDR - roundup(sizeof(gd_t),16);
	new_gd = (gd_t *)ptr;
	memcpy(new_gd, (void *)gd, sizeof(gd_t));
#if CONFIG_IS_ENABLED(DM)
	dm_fixup_for_gd_move(new_gd);
#endif
#if !defined(CONFIG_ARM)
	gd = new_gd;
#endif
	return ptr;
#else
	return 0;
#endif
}
Commit	Line	Data
bcae7211 A	1	/*
	2	* (C) Copyright 2010
	3	* Texas Instruments, <www.ti.com>
	4	*
	5	* Aneesh V <aneesh@ti.com>
	6	*
1a459660	7	* SPDX-License-Identifier: GPL-2.0+
bcae7211	8	*/
f1c6e192	9
bcae7211	10	#include <common.h>
11516518	11	#include <dm.h>
47f7bcae	12	#include <spl.h>
bcae7211	13	#include <asm/u-boot.h>
bb085b87	14	#include <nand.h>
8cf686e1	15	#include <fat.h>
efb2172e	16	#include <version.h>
8cf686e1	17	#include <image.h>
2d01dd95	18	#include <malloc.h>
11516518	19	#include <dm/root.h>
761ca31e	20	#include <linux/compiler.h>
6e7585bb	21	#include <fdt_support.h>
bcae7211 A	22
	23	DECLARE_GLOBAL_DATA_PTR;
	24
3c6f8a0d SR	25	#ifndef CONFIG_SYS_UBOOT_START
	26	#define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE
	27	#endif
ae83d882	28	#ifndef CONFIG_SYS_MONITOR_LEN
e76caa62	29	/* Unknown U-Boot size, let's assume it will not be more than 200 KB */
ae83d882 SB	30	#define CONFIG_SYS_MONITOR_LEN (200 * 1024)
	31	#endif
	32
47f7bcae	33	u32 *boot_params_ptr = NULL;
9ea5c6ef	34
6507f133	35	/* Define board data structure */
bcae7211 A	36	static bd_t bdata __attribute__ ((section(".data")));
bcae7211 A	37
496c5483 HS	38	/*
	39	* Board-specific Platform code can reimplement show_boot_progress () if needed
	40	*/
	41	__weak void show_boot_progress(int val) {}
	42
379c19ab SS	43	/*
	44	* Default function to determine if u-boot or the OS should
	45	* be started. This implementation always returns 1.
	46	*
	47	* Please implement your own board specific funcion to do this.
	48	*
	49	* RETURN
	50	* 0 to not start u-boot
	51	* positive if u-boot should start
	52	*/
	53	#ifdef CONFIG_SPL_OS_BOOT
	54	__weak int spl_start_uboot(void)
	55	{
026b2fe3 TR	56	puts("SPL: Please implement spl_start_uboot() for your board\n");
026b2fe3 TR	57	puts("SPL: Direct Linux boot not active!\n");
379c19ab SS	58	return 1;
379c19ab SS	59	}
431889d6	60
6e7585bb R	61	/* weak default platform specific function to initialize
	62	* dram banks
	63	*/
	64	__weak int dram_init_banksize(void)
	65	{
	66	return 0;
	67	}
	68
431889d6 LM	69	/*
	70	* Weak default function for arch specific zImage check. Return zero
	71	* and fill start and end address if image is recognized.
	72	*/
	73	int __weak bootz_setup(ulong image, ulong start, ulong end)
	74	{
	75	return 1;
	76	}
379c19ab SS	77	#endif
379c19ab SS	78
6e7585bb R	79	void spl_fixup_fdt(void)
	80	{
	81	#if defined(CONFIG_SPL_OF_LIBFDT) && defined(CONFIG_SYS_SPL_ARGS_ADDR)
	82	void fdt_blob = (void )CONFIG_SYS_SPL_ARGS_ADDR;
	83	int err;
	84
	85	err = fdt_check_header(fdt_blob);
	86	if (err < 0) {
	87	printf("fdt_root: %s\n", fdt_strerror(err));
	88	return;
	89	}
	90
	91	/* fixup the memory dt node */
	92	err = fdt_shrink_to_minimum(fdt_blob, 0);
	93	if (err == 0) {
	94	printf("spl: fdt_shrink_to_minimum err - %d\n", err);
	95	return;
	96	}
	97
	98	err = arch_fixup_fdt(fdt_blob);
	99	if (err) {
	100	printf("spl: arch_fixup_fdt err - %d\n", err);
	101	return;
	102	}
	103	#endif
	104	}
	105
ea8256f0 SR	106	/*
	107	* Weak default function for board specific cleanup/preparation before
	108	* Linux boot. Some boards/platforms might not need it, so just provide
	109	* an empty stub here.
	110	*/
	111	__weak void spl_board_prepare_for_linux(void)
	112	{
	113	/* Nothing to do! */
	114	}
	115
3a3b9147 MS	116	__weak void spl_board_prepare_for_boot(void)
	117	{
	118	/* Nothing to do! */
	119	}
	120
d95ceb97	121	void spl_set_header_raw_uboot(struct spl_image_info *spl_image)
0c3117b1	122	{
d95ceb97 SG	123	spl_image->size = CONFIG_SYS_MONITOR_LEN;
	124	spl_image->entry_point = CONFIG_SYS_UBOOT_START;
	125	spl_image->load_addr = CONFIG_SYS_TEXT_BASE;
	126	spl_image->os = IH_OS_U_BOOT;
	127	spl_image->name = "U-Boot";
0c3117b1 HS	128	}
0c3117b1 HS	129
71316c1d SG	130	int spl_parse_image_header(struct spl_image_info *spl_image,
71316c1d SG	131	const struct image_header *header)
8cf686e1	132	{
77552b06	133	if (image_get_magic(header) == IH_MAGIC) {
722a6b17 AD	134	#ifdef CONFIG_SPL_LEGACY_IMAGE_SUPPORT
	135	u32 header_size = sizeof(struct image_header);
	136
71316c1d	137	if (spl_image->flags & SPL_COPY_PAYLOAD_ONLY) {
022b4975 SR	138	/*
	139	* On some system (e.g. powerpc), the load-address and
	140	* entry-point is located at address 0. We can't load
	141	* to 0-0x40. So skip header in this case.
	142	*/
71316c1d SG	143	spl_image->load_addr = image_get_load(header);
	144	spl_image->entry_point = image_get_ep(header);
	145	spl_image->size = image_get_data_size(header);
022b4975	146	} else {
71316c1d	147	spl_image->entry_point = image_get_load(header);
022b4975	148	/* Load including the header */
71316c1d	149	spl_image->load_addr = spl_image->entry_point -
022b4975	150	header_size;
71316c1d	151	spl_image->size = image_get_data_size(header) +
022b4975 SR	152	header_size;
022b4975 SR	153	}
71316c1d SG	154	spl_image->os = image_get_os(header);
71316c1d SG	155	spl_image->name = image_get_name(header);
11e1479b	156	debug("spl: payload image: %.*s load addr: 0x%lx size: %d\n",
3fe3839a	157	IH_NMLEN, spl_image->name,
71316c1d	158	spl_image->load_addr, spl_image->size);
722a6b17 AD	159	#else
722a6b17 AD	160	/* LEGACY image not supported */
2d2531be	161	debug("Legacy boot image support not enabled, proceeding to other boot methods\n");
722a6b17 AD	162	return -EINVAL;
722a6b17 AD	163	#endif
8cf686e1	164	} else {
8c80eb3b AA	165	#ifdef CONFIG_SPL_PANIC_ON_RAW_IMAGE
	166	/*
	167	* CONFIG_SPL_PANIC_ON_RAW_IMAGE is defined when the
	168	* code which loads images in SPL cannot guarantee that
	169	* absolutely all read errors will be reported.
	170	* An example is the LPC32XX MLC NAND driver, which
	171	* will consider that a completely unreadable NAND block
	172	* is bad, and thus should be skipped silently.
	173	*/
	174	panic("** no mkimage signature but raw image not supported");
85a37729 PK	175	#endif
85a37729 PK	176
431889d6 LM	177	#ifdef CONFIG_SPL_OS_BOOT
	178	ulong start, end;
	179
	180	if (!bootz_setup((ulong)header, &start, &end)) {
71316c1d SG	181	spl_image->name = "Linux";
	182	spl_image->os = IH_OS_LINUX;
	183	spl_image->load_addr = CONFIG_SYS_LOAD_ADDR;
	184	spl_image->entry_point = CONFIG_SYS_LOAD_ADDR;
	185	spl_image->size = end - start;
11e1479b	186	debug("spl: payload zImage, load addr: 0x%lx size: %d\n",
71316c1d	187	spl_image->load_addr, spl_image->size);
431889d6 LM	188	return 0;
	189	}
	190	#endif
85a37729	191
24eb39b5	192	#ifdef CONFIG_SPL_RAW_IMAGE_SUPPORT
8cf686e1	193	/* Signature not found - assume u-boot.bin */
026b2fe3	194	debug("mkimage signature not found - ih_magic = %x\n",
8cf686e1	195	header->ih_magic);
71316c1d	196	spl_set_header_raw_uboot(spl_image);
24eb39b5 AD	197	#else
24eb39b5 AD	198	/* RAW image not supported, proceed to other boot methods. */
2d2531be	199	debug("Raw boot image support not enabled, proceeding to other boot methods\n");
24eb39b5	200	return -EINVAL;
8c80eb3b	201	#endif
8cf686e1	202	}
24eb39b5	203
7e0f2267	204	return 0;
8cf686e1 A	205	}
8cf686e1 A	206
a759f1e0	207	__weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
8cf686e1	208	{
4a0eb757 S	209	typedef void __noreturn (*image_entry_noargs_t)(void);
4a0eb757 S	210
8cf686e1	211	image_entry_noargs_t image_entry =
11e1479b	212	(image_entry_noargs_t)spl_image->entry_point;
8cf686e1	213
11e1479b	214	debug("image entry point: 0x%lX\n", spl_image->entry_point);
4a0eb757	215	image_entry();
8cf686e1 A	216	}
8cf686e1 A	217
340f418a	218	static int spl_common_init(bool setup_malloc)
bcae7211	219	{
f3d46bd6 SG	220	int ret;
f3d46bd6 SG	221
340f418a EC	222	debug("spl_early_init()\n");
340f418a EC	223
f1896c45	224	#if CONFIG_VAL(SYS_MALLOC_F_LEN)
340f418a	225	if (setup_malloc) {
94b9e22e	226	#ifdef CONFIG_MALLOC_F_ADDR
340f418a	227	gd->malloc_base = CONFIG_MALLOC_F_ADDR;
94b9e22e	228	#endif
f1896c45	229	gd->malloc_limit = CONFIG_VAL(SYS_MALLOC_F_LEN);
340f418a EC	230	gd->malloc_ptr = 0;
340f418a EC	231	}
24dafad5	232	#endif
824bb1b4 SG	233	ret = bootstage_init(true);
	234	if (ret) {
	235	debug("%s: Failed to set up bootstage: ret=%d\n", __func__,
	236	ret);
	237	return ret;
	238	}
	239	bootstage_mark_name(BOOTSTAGE_ID_START_SPL, "spl");
d223e0a8	240	if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
f3d46bd6 SG	241	ret = fdtdec_setup();
	242	if (ret) {
	243	debug("fdtdec_setup() returned error %d\n", ret);
070d00b8	244	return ret;
f3d46bd6 SG	245	}
f3d46bd6 SG	246	}
f1c6e192	247	if (CONFIG_IS_ENABLED(DM)) {
824bb1b4	248	bootstage_start(BOOTSTATE_ID_ACCUM_DM_SPL, "dm_spl");
7f73ca48	249	/* With CONFIG_SPL_OF_PLATDATA, bring in all devices */
7d23b9cf	250	ret = dm_init_and_scan(!CONFIG_IS_ENABLED(OF_PLATDATA));
824bb1b4	251	bootstage_accum(BOOTSTATE_ID_ACCUM_DM_SPL);
f3d46bd6 SG	252	if (ret) {
f3d46bd6 SG	253	debug("dm_init_and_scan() returned error %d\n", ret);
070d00b8	254	return ret;
f3d46bd6 SG	255	}
f3d46bd6 SG	256	}
340f418a EC	257
	258	return 0;
	259	}
	260
d1fc0a31 YS	261	void spl_set_bd(void)
	262	{
	263	if (!gd->bd)
	264	gd->bd = &bdata;
	265	}
	266
340f418a EC	267	int spl_early_init(void)
	268	{
	269	int ret;
	270
	271	ret = spl_common_init(true);
	272	if (ret)
	273	return ret;
	274	gd->flags \|= GD_FLG_SPL_EARLY_INIT;
	275
	276	return 0;
	277	}
	278
	279	int spl_init(void)
	280	{
	281	int ret;
cf334edf TR	282	bool setup_malloc = !(IS_ENABLED(CONFIG_SPL_STACK_R) &&
cf334edf TR	283	IS_ENABLED(CONFIG_SPL_SYS_MALLOC_SIMPLE));
340f418a EC	284
340f418a EC	285	if (!(gd->flags & GD_FLG_SPL_EARLY_INIT)) {
cf334edf	286	ret = spl_common_init(setup_malloc);
340f418a EC	287	if (ret)
	288	return ret;
	289	}
070d00b8	290	gd->flags \|= GD_FLG_SPL_INIT;
2d01dd95	291
070d00b8 SG	292	return 0;
	293	}
	294
f101e4bd NK	295	#ifndef BOOT_DEVICE_NONE
	296	#define BOOT_DEVICE_NONE 0xdeadbeef
	297	#endif
	298
f101e4bd NK	299	__weak void board_boot_order(u32 *spl_boot_list)
	300	{
	301	spl_boot_list[0] = spl_boot_device();
	302	}
	303
a0a80290 SG	304	static struct spl_image_loader *spl_ll_find_loader(uint boot_device)
	305	{
	306	struct spl_image_loader *drv =
	307	ll_entry_start(struct spl_image_loader, spl_image_loader);
	308	const int n_ents =
	309	ll_entry_count(struct spl_image_loader, spl_image_loader);
	310	struct spl_image_loader *entry;
	311
	312	for (entry = drv; entry != drv + n_ents; entry++) {
	313	if (boot_device == entry->boot_device)
	314	return entry;
	315	}
	316
	317	/* Not found */
	318	return NULL;
	319	}
	320
29d357d7 SG	321	static int spl_load_image(struct spl_image_info *spl_image,
29d357d7 SG	322	struct spl_image_loader *loader)
070d00b8	323	{
ecdfd69a SG	324	struct spl_boot_device bootdev;
ecdfd69a SG	325
29d357d7	326	bootdev.boot_device = loader->boot_device;
ecdfd69a SG	327	bootdev.boot_device_name = NULL;
ecdfd69a SG	328
540bfe7d SG	329	return loader->load_image(spl_image, &bootdev);
	330	}
	331
	332	/**
	333	* boot_from_devices() - Try loading an booting U-Boot from a list of devices
	334	*
	335	* @spl_image: Place to put the image details if successful
	336	* @spl_boot_list: List of boot devices to try
	337	* @count: Number of elements in spl_boot_list
	338	* @return 0 if OK, -ve on error
	339	*/
	340	static int boot_from_devices(struct spl_image_info *spl_image,
	341	u32 spl_boot_list[], int count)
	342	{
	343	int i;
	344
	345	for (i = 0; i < count && spl_boot_list[i] != BOOT_DEVICE_NONE; i++) {
	346	struct spl_image_loader *loader;
	347
540bfe7d	348	loader = spl_ll_find_loader(spl_boot_list[i]);
18f26fdb	349	#if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
2acf35db	350	if (loader)
cf947da1	351	printf("Trying to boot from %s\n", loader->name);
2acf35db	352	else
540bfe7d	353	puts("SPL: Unsupported Boot Device!\n");
18f26fdb	354	#endif
29d357d7	355	if (loader && !spl_load_image(spl_image, loader))
540bfe7d SG	356	return 0;
	357	}
	358
97d9df0a	359	return -ENODEV;
5211b87e NK	360	}
	361
	362	void board_init_r(gd_t *dummy1, ulong dummy2)
	363	{
d32b2d1c SG	364	u32 spl_boot_list[] = {
	365	BOOT_DEVICE_NONE,
	366	BOOT_DEVICE_NONE,
	367	BOOT_DEVICE_NONE,
	368	BOOT_DEVICE_NONE,
	369	BOOT_DEVICE_NONE,
	370	};
	371	struct spl_image_info spl_image;
5211b87e NK	372
5211b87e NK	373	debug(">>spl:board_init_r()\n");
d1fc0a31 YS	374
	375	spl_set_bd();
	376
6e7585bb R	377	#ifdef CONFIG_SPL_OS_BOOT
	378	dram_init_banksize();
	379	#endif
5211b87e NK	380
	381	#if defined(CONFIG_SYS_SPL_MALLOC_START)
	382	mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
	383	CONFIG_SYS_SPL_MALLOC_SIZE);
	384	gd->flags \|= GD_FLG_FULL_MALLOC_INIT;
	385	#endif
	386	if (!(gd->flags & GD_FLG_SPL_INIT)) {
	387	if (spl_init())
	388	hang();
	389	}
f9d42d82	390	#if !defined(CONFIG_PPC) && !defined(CONFIG_ARCH_MX6)
5211b87e NK	391	/*
	392	* timer_init() does not exist on PPC systems. The timer is initialized
	393	* and enabled (decrementer) in interrupt_init() here.
	394	*/
	395	timer_init();
	396	#endif
	397
	398	#ifdef CONFIG_SPL_BOARD_INIT
	399	spl_board_init();
	400	#endif
	401
d32b2d1c	402	memset(&spl_image, '\0', sizeof(spl_image));
5bf5250e VM	403	#ifdef CONFIG_SYS_SPL_ARGS_ADDR
	404	spl_image.arg = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
	405	#endif
f101e4bd	406	board_boot_order(spl_boot_list);
f101e4bd	407
540bfe7d SG	408	if (boot_from_devices(&spl_image, spl_boot_list,
540bfe7d SG	409	ARRAY_SIZE(spl_boot_list))) {
f101e4bd	410	puts("SPL: failed to boot from all boot devices\n");
5211b87e	411	hang();
f101e4bd	412	}
5211b87e	413
6bcdd66d VM	414	#ifdef CONFIG_CPU_V7M
	415	spl_image.entry_point \|= 0x1;
	416	#endif
9ea5c6ef	417	switch (spl_image.os) {
8cf686e1 A	418	case IH_OS_U_BOOT:
8cf686e1 A	419	debug("Jumping to U-Boot\n");
8cf686e1	420	break;
379c19ab SS	421	#ifdef CONFIG_SPL_OS_BOOT
	422	case IH_OS_LINUX:
	423	debug("Jumping to Linux\n");
6e7585bb	424	spl_fixup_fdt();
379c19ab	425	spl_board_prepare_for_linux();
5bf5250e	426	jump_to_image_linux(&spl_image);
379c19ab	427	#endif
8cf686e1	428	default:
42120981	429	debug("Unsupported OS image.. Jumping nevertheless..\n");
8cf686e1	430	}
f1896c45	431	#if CONFIG_VAL(SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE)
fb4f5e7c SG	432	debug("SPL malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
	433	gd->malloc_ptr / 1024);
	434	#endif
824bb1b4 SG	435	#ifdef CONFIG_BOOTSTAGE_STASH
	436	int ret;
	437
	438	bootstage_mark_name(BOOTSTAGE_ID_END_SPL, "end_spl");
	439	ret = bootstage_stash((void *)CONFIG_BOOTSTAGE_STASH_ADDR,
	440	CONFIG_BOOTSTAGE_STASH_SIZE);
	441	if (ret)
	442	debug("Failed to stash bootstage: err=%d\n", ret);
	443	#endif
a8c5112a KY	444
	445	if (CONFIG_IS_ENABLED(ATF_SUPPORT)) {
	446	debug("loaded - jumping to U-Boot via ATF BL31.\n");
	447	bl31_entry();
	448	}
	449
	450	debug("loaded - jumping to U-Boot...\n");
3a3b9147	451	spl_board_prepare_for_boot();
a759f1e0	452	jump_to_image_no_args(&spl_image);
bcae7211 A	453	}
bcae7211 A	454
6507f133 TR	455	/*
	456	* This requires UART clocks to be enabled. In order for this to work the
	457	* caller must ensure that the gd pointer is valid.
	458	*/
bcae7211 A	459	void preloader_console_init(void)
bcae7211 A	460	{
bcae7211 A	461	gd->baudrate = CONFIG_BAUDRATE;
bcae7211 A	462
bcae7211 A	463	serial_init(); /* serial communications setup */
bcae7211 A	464
b88befa5 IY	465	gd->have_console = 1;
b88befa5 IY	466
026b2fe3 TR	467	puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
026b2fe3 TR	468	U_BOOT_TIME ")\n");
861a86f4 TR	469	#ifdef CONFIG_SPL_DISPLAY_PRINT
	470	spl_display_print();
	471	#endif
cc3f7058	472	}
db910353 SG	473
	474	/**
	475	* spl_relocate_stack_gd() - Relocate stack ready for board_init_r() execution
	476	*
	477	* Sometimes board_init_f() runs with a stack in SRAM but we want to use SDRAM
	478	* for the main board_init_r() execution. This is typically because we need
	479	* more stack space for things like the MMC sub-system.
	480	*
	481	* This function calculates the stack position, copies the global_data into
adc421e4 AA	482	* place, sets the new gd (except for ARM, for which setting GD within a C
	483	* function may not always work) and returns the new stack position. The
	484	* caller is responsible for setting up the sp register and, in the case
	485	* of ARM, setting up gd.
	486	*
	487	* All of this is done using the same layout and alignments as done in
	488	* board_init_f_init_reserve() / board_init_f_alloc_reserve().
db910353 SG	489	*
	490	* @return new stack location, or 0 to use the same stack
	491	*/
	492	ulong spl_relocate_stack_gd(void)
	493	{
	494	#ifdef CONFIG_SPL_STACK_R
	495	gd_t *new_gd;
adc421e4	496	ulong ptr = CONFIG_SPL_STACK_R_ADDR;
db910353	497
ae2cee2e	498	#if defined(CONFIG_SPL_SYS_MALLOC_SIMPLE) && CONFIG_VAL(SYS_MALLOC_F_LEN)
dcfcb8d4	499	if (CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN) {
dcfcb8d4 HG	500	ptr -= CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
	501	gd->malloc_base = ptr;
	502	gd->malloc_limit = CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
	503	gd->malloc_ptr = 0;
	504	}
	505	#endif
adc421e4 AA	506	/* Get stack position: use 8-byte alignment for ABI compliance */
	507	ptr = CONFIG_SPL_STACK_R_ADDR - roundup(sizeof(gd_t),16);
	508	new_gd = (gd_t *)ptr;
	509	memcpy(new_gd, (void *)gd, sizeof(gd_t));
2f11cd91 SG	510	#if CONFIG_IS_ENABLED(DM)
	511	dm_fixup_for_gd_move(new_gd);
	512	#endif
adc421e4 AA	513	#if !defined(CONFIG_ARM)
	514	gd = new_gd;
	515	#endif
db910353 SG	516	return ptr;
	517	#else
	518	return 0;
	519	#endif
	520	}