[people/ms/u-boot.git] / arch / arm / lib / bootm.c

/* Copyright (C) 2011
 * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
 *  - Added prep subcommand support
 *  - Reorganized source - modeled after powerpc version
 *
 * (C) Copyright 2002
 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Marius Groeger <mgroeger@sysgo.de>
 *
 * Copyright (C) 2001  Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <command.h>
#include <dm.h>
#include <dm/root.h>
#include <image.h>
#include <u-boot/zlib.h>
#include <asm/byteorder.h>
#include <libfdt.h>
#include <mapmem.h>
#include <fdt_support.h>
#include <asm/bootm.h>
#include <asm/secure.h>
#include <linux/compiler.h>
#include <bootm.h>
#include <vxworks.h>

#ifdef CONFIG_ARMV7_NONSEC
#include <asm/armv7.h>
#endif
#include <asm/setup.h>

DECLARE_GLOBAL_DATA_PTR;

static struct tag *params;

static ulong get_sp(void)
{
	ulong ret;

	asm("mov %0, sp" : "=r"(ret) : );
	return ret;
}

void arch_lmb_reserve(struct lmb *lmb)
{
	ulong sp, bank_end;
	int bank;

	/*
	 * Booting a (Linux) kernel image
	 *
	 * Allocate space for command line and board info - the
	 * address should be as high as possible within the reach of
	 * the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused
	 * memory, which means far enough below the current stack
	 * pointer.
	 */
	sp = get_sp();
	debug("## Current stack ends at 0x%08lx ", sp);

	/* adjust sp by 4K to be safe */
	sp -= 4096;
	for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
		if (sp < gd->bd->bi_dram[bank].start)
			continue;
		bank_end = gd->bd->bi_dram[bank].start +
			gd->bd->bi_dram[bank].size;
		if (sp >= bank_end)
			continue;
		lmb_reserve(lmb, sp, bank_end - sp);
		break;
	}
}

__weak void board_quiesce_devices(void)
{
}

/**
 * announce_and_cleanup() - Print message and prepare for kernel boot
 *
 * @fake: non-zero to do everything except actually boot
 */
static void announce_and_cleanup(int fake)
{
	printf("\nStarting kernel ...%s\n\n", fake ?
		"(fake run for tracing)" : "");
	bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
#ifdef CONFIG_BOOTSTAGE_FDT
	bootstage_fdt_add_report();
#endif
#ifdef CONFIG_BOOTSTAGE_REPORT
	bootstage_report();
#endif

#ifdef CONFIG_USB_DEVICE
	udc_disconnect();
#endif

	board_quiesce_devices();

	/*
	 * Call remove function of all devices with a removal flag set.
	 * This may be useful for last-stage operations, like cancelling
	 * of DMA operation or releasing device internal buffers.
	 */
	dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);

	cleanup_before_linux();
}

static void setup_start_tag (bd_t *bd)
{
	params = (struct tag *)bd->bi_boot_params;

	params->hdr.tag = ATAG_CORE;
	params->hdr.size = tag_size (tag_core);

	params->u.core.flags = 0;
	params->u.core.pagesize = 0;
	params->u.core.rootdev = 0;

	params = tag_next (params);
}

static void setup_memory_tags(bd_t *bd)
{
	int i;

	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
		params->hdr.tag = ATAG_MEM;
		params->hdr.size = tag_size (tag_mem32);

		params->u.mem.start = bd->bi_dram[i].start;
		params->u.mem.size = bd->bi_dram[i].size;

		params = tag_next (params);
	}
}

static void setup_commandline_tag(bd_t *bd, char *commandline)
{
	char *p;

	if (!commandline)
		return;

	/* eat leading white space */
	for (p = commandline; *p == ' '; p++);

	/* skip non-existent command lines so the kernel will still
	 * use its default command line.
	 */
	if (*p == '\0')
		return;

	params->hdr.tag = ATAG_CMDLINE;
	params->hdr.size =
		(sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;

	strcpy (params->u.cmdline.cmdline, p);

	params = tag_next (params);
}

static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end)
{
	/* an ATAG_INITRD node tells the kernel where the compressed
	 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
	 */
	params->hdr.tag = ATAG_INITRD2;
	params->hdr.size = tag_size (tag_initrd);

	params->u.initrd.start = initrd_start;
	params->u.initrd.size = initrd_end - initrd_start;

	params = tag_next (params);
}

static void setup_serial_tag(struct tag **tmp)
{
	struct tag *params = *tmp;
	struct tag_serialnr serialnr;

	get_board_serial(&serialnr);
	params->hdr.tag = ATAG_SERIAL;
	params->hdr.size = tag_size (tag_serialnr);
	params->u.serialnr.low = serialnr.low;
	params->u.serialnr.high= serialnr.high;
	params = tag_next (params);
	*tmp = params;
}

static void setup_revision_tag(struct tag **in_params)
{
	u32 rev = 0;

	rev = get_board_rev();
	params->hdr.tag = ATAG_REVISION;
	params->hdr.size = tag_size (tag_revision);
	params->u.revision.rev = rev;
	params = tag_next (params);
}

static void setup_end_tag(bd_t *bd)
{
	params->hdr.tag = ATAG_NONE;
	params->hdr.size = 0;
}

__weak void setup_board_tags(struct tag **in_params) {}

#ifdef CONFIG_ARM64
static void do_nonsec_virt_switch(void)
{
	smp_kick_all_cpus();
	dcache_disable();	/* flush cache before swtiching to EL2 */
}
#endif

/* Subcommand: PREP */
static void boot_prep_linux(bootm_headers_t *images)
{
	char *commandline = env_get("bootargs");

	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
#ifdef CONFIG_OF_LIBFDT
		debug("using: FDT\n");
		if (image_setup_linux(images)) {
			printf("FDT creation failed! hanging...");
			hang();
		}
#endif
	} else if (BOOTM_ENABLE_TAGS) {
		debug("using: ATAGS\n");
		setup_start_tag(gd->bd);
		if (BOOTM_ENABLE_SERIAL_TAG)
			setup_serial_tag(&params);
		if (BOOTM_ENABLE_CMDLINE_TAG)
			setup_commandline_tag(gd->bd, commandline);
		if (BOOTM_ENABLE_REVISION_TAG)
			setup_revision_tag(&params);
		if (BOOTM_ENABLE_MEMORY_TAGS)
			setup_memory_tags(gd->bd);
		if (BOOTM_ENABLE_INITRD_TAG) {
			/*
			 * In boot_ramdisk_high(), it may relocate ramdisk to
			 * a specified location. And set images->initrd_start &
			 * images->initrd_end to relocated ramdisk's start/end
			 * addresses. So use them instead of images->rd_start &
			 * images->rd_end when possible.
			 */
			if (images->initrd_start && images->initrd_end) {
				setup_initrd_tag(gd->bd, images->initrd_start,
						 images->initrd_end);
			} else if (images->rd_start && images->rd_end) {
				setup_initrd_tag(gd->bd, images->rd_start,
						 images->rd_end);
			}
		}
		setup_board_tags(&params);
		setup_end_tag(gd->bd);
	} else {
		printf("FDT and ATAGS support not compiled in - hanging\n");
		hang();
	}
}

__weak bool armv7_boot_nonsec_default(void)
{
#ifdef CONFIG_ARMV7_BOOT_SEC_DEFAULT
	return false;
#else
	return true;
#endif
}

#ifdef CONFIG_ARMV7_NONSEC
bool armv7_boot_nonsec(void)
{
	char *s = env_get("bootm_boot_mode");
	bool nonsec = armv7_boot_nonsec_default();

	if (s && !strcmp(s, "sec"))
		nonsec = false;

	if (s && !strcmp(s, "nonsec"))
		nonsec = true;

	return nonsec;
}
#endif

#ifdef CONFIG_ARM64
__weak void update_os_arch_secondary_cores(uint8_t os_arch)
{
}

#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
static void switch_to_el1(void)
{
	if ((IH_ARCH_DEFAULT == IH_ARCH_ARM64) &&
	    (images.os.arch == IH_ARCH_ARM))
		armv8_switch_to_el1(0, (u64)gd->bd->bi_arch_number,
				    (u64)images.ft_addr, 0,
				    (u64)images.ep,
				    ES_TO_AARCH32);
	else
		armv8_switch_to_el1((u64)images.ft_addr, 0, 0, 0,
				    images.ep,
				    ES_TO_AARCH64);
}
#endif
#endif

/* Subcommand: GO */
static void boot_jump_linux(bootm_headers_t *images, int flag)
{
#ifdef CONFIG_ARM64
	void (*kernel_entry)(void *fdt_addr, void *res0, void *res1,
			void *res2);
	int fake = (flag & BOOTM_STATE_OS_FAKE_GO);

	kernel_entry = (void (*)(void *fdt_addr, void *res0, void *res1,
				void *res2))images->ep;

	debug("## Transferring control to Linux (at address %lx)...\n",
		(ulong) kernel_entry);
	bootstage_mark(BOOTSTAGE_ID_RUN_OS);

	announce_and_cleanup(fake);

	if (!fake) {
#ifdef CONFIG_ARMV8_PSCI
		armv8_setup_psci();
#endif
		do_nonsec_virt_switch();

		update_os_arch_secondary_cores(images->os.arch);

#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
		armv8_switch_to_el2((u64)images->ft_addr, 0, 0, 0,
				    (u64)switch_to_el1, ES_TO_AARCH64);
#else
		if ((IH_ARCH_DEFAULT == IH_ARCH_ARM64) &&
		    (images->os.arch == IH_ARCH_ARM))
			armv8_switch_to_el2(0, (u64)gd->bd->bi_arch_number,
					    (u64)images->ft_addr, 0,
					    (u64)images->ep,
					    ES_TO_AARCH32);
		else
			armv8_switch_to_el2((u64)images->ft_addr, 0, 0, 0,
					    images->ep,
					    ES_TO_AARCH64);
#endif
	}
#else
	unsigned long machid = gd->bd->bi_arch_number;
	char *s;
	void (*kernel_entry)(int zero, int arch, uint params);
	unsigned long r2;
	int fake = (flag & BOOTM_STATE_OS_FAKE_GO);

	kernel_entry = (void (*)(int, int, uint))images->ep;
#ifdef CONFIG_CPU_V7M
	ulong addr = (ulong)kernel_entry | 1;
	kernel_entry = (void *)addr;
#endif
	s = env_get("machid");
	if (s) {
		if (strict_strtoul(s, 16, &machid) < 0) {
			debug("strict_strtoul failed!\n");
			return;
		}
		printf("Using machid 0x%lx from environment\n", machid);
	}

	debug("## Transferring control to Linux (at address %08lx)" \
		"...\n", (ulong) kernel_entry);
	bootstage_mark(BOOTSTAGE_ID_RUN_OS);
	announce_and_cleanup(fake);

	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
		r2 = (unsigned long)images->ft_addr;
	else
		r2 = gd->bd->bi_boot_params;

	if (!fake) {
#ifdef CONFIG_ARMV7_NONSEC
		if (armv7_boot_nonsec()) {
			armv7_init_nonsec();
			secure_ram_addr(_do_nonsec_entry)(kernel_entry,
							  0, machid, r2);
		} else
#endif
			kernel_entry(0, machid, r2);
	}
#endif
}

/* Main Entry point for arm bootm implementation
 *
 * Modeled after the powerpc implementation
 * DIFFERENCE: Instead of calling prep and go at the end
 * they are called if subcommand is equal 0.
 */
int do_bootm_linux(int flag, int argc, char * const argv[],
		   bootm_headers_t *images)
{
	/* No need for those on ARM */
	if (flag & BOOTM_STATE_OS_BD_T || flag & BOOTM_STATE_OS_CMDLINE)
		return -1;

	if (flag & BOOTM_STATE_OS_PREP) {
		boot_prep_linux(images);
		return 0;
	}

	if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
		boot_jump_linux(images, flag);
		return 0;
	}

	boot_prep_linux(images);
	boot_jump_linux(images, flag);
	return 0;
}

#if defined(CONFIG_BOOTM_VXWORKS)
void boot_prep_vxworks(bootm_headers_t *images)
{
#if defined(CONFIG_OF_LIBFDT)
	int off;

	if (images->ft_addr) {
		off = fdt_path_offset(images->ft_addr, "/memory");
		if (off < 0) {
			if (arch_fixup_fdt(images->ft_addr))
				puts("## WARNING: fixup memory failed!\n");
		}
	}
#endif
	cleanup_before_linux();
}
void boot_jump_vxworks(bootm_headers_t *images)
{
	/* ARM VxWorks requires device tree physical address to be passed */
	((void (*)(void *))images->ep)(images->ft_addr);
}
#endif
Commit	Line	Data
0a672d49 SS	1	/* Copyright (C) 2011
	2	* Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
	3	* - Added prep subcommand support
	4	* - Reorganized source - modeled after powerpc version
	5	*
c609719b WD	6	* (C) Copyright 2002
	7	* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
	8	* Marius Groeger <mgroeger@sysgo.de>
	9	*
	10	* Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
	11	*
1a459660	12	* SPDX-License-Identifier: GPL-2.0+
c609719b WD	13	*/
	14
	15	#include <common.h>
	16	#include <command.h>
9d922450	17	#include <dm.h>
1b8220aa	18	#include <dm/root.h>
c609719b	19	#include <image.h>
a31e091a	20	#include <u-boot/zlib.h>
c609719b	21	#include <asm/byteorder.h>
2d1916e4	22	#include <libfdt.h>
0eb25b61	23	#include <mapmem.h>
2d1916e4	24	#include <fdt_support.h>
0a672d49	25	#include <asm/bootm.h>
f510aeae	26	#include <asm/secure.h>
89e6f138	27	#include <linux/compiler.h>
8d196e52 EN	28	#include <bootm.h>
8d196e52 EN	29	#include <vxworks.h>
c609719b	30
104d6fb6	31	#ifdef CONFIG_ARMV7_NONSEC
bb975455 AP	32	#include <asm/armv7.h>
bb975455 AP	33	#endif
c45300b0	34	#include <asm/setup.h>
bb975455	35
d87080b7 WD	36	DECLARE_GLOBAL_DATA_PTR;
d87080b7 WD	37
c609719b	38	static struct tag *params;
2d1916e4	39
0a672d49 SS	40	static ulong get_sp(void)
	41	{
	42	ulong ret;
	43
	44	asm("mov %0, sp" : "=r"(ret) : );
	45	return ret;
	46	}
	47
2d1916e4 JR	48	void arch_lmb_reserve(struct lmb *lmb)
2d1916e4 JR	49	{
15751403 SW	50	ulong sp, bank_end;
15751403 SW	51	int bank;
2d1916e4 JR	52
	53	/*
	54	* Booting a (Linux) kernel image
	55	*
	56	* Allocate space for command line and board info - the
	57	* address should be as high as possible within the reach of
	58	* the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused
	59	* memory, which means far enough below the current stack
	60	* pointer.
	61	*/
	62	sp = get_sp();
	63	debug("## Current stack ends at 0x%08lx ", sp);
	64
fcfa696b RH	65	/* adjust sp by 4K to be safe */
fcfa696b RH	66	sp -= 4096;
15751403 SW	67	for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
	68	if (sp < gd->bd->bi_dram[bank].start)
	69	continue;
	70	bank_end = gd->bd->bi_dram[bank].start +
	71	gd->bd->bi_dram[bank].size;
	72	if (sp >= bank_end)
	73	continue;
	74	lmb_reserve(lmb, sp, bank_end - sp);
	75	break;
	76	}
2d1916e4 JR	77	}
2d1916e4 JR	78
b7b8410a AG	79	__weak void board_quiesce_devices(void)
	80	{
	81	}
	82
bce1b92a SG	83	/**
	84	* announce_and_cleanup() - Print message and prepare for kernel boot
	85	*
	86	* @fake: non-zero to do everything except actually boot
	87	*/
	88	static void announce_and_cleanup(int fake)
2d1916e4	89	{
bce1b92a SG	90	printf("\nStarting kernel ...%s\n\n", fake ?
bce1b92a SG	91	"(fake run for tracing)" : "");
0a672d49	92	bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
94fd1316	93	#ifdef CONFIG_BOOTSTAGE_FDT
91290cf7	94	bootstage_fdt_add_report();
94fd1316	95	#endif
0a672d49 SS	96	#ifdef CONFIG_BOOTSTAGE_REPORT
	97	bootstage_report();
	98	#endif
1055171e	99
0a672d49 SS	100	#ifdef CONFIG_USB_DEVICE
0a672d49 SS	101	udc_disconnect();
2d1916e4	102	#endif
b7b8410a AG	103
	104	board_quiesce_devices();
	105
1b8220aa SR	106	/*
	107	* Call remove function of all devices with a removal flag set.
	108	* This may be useful for last-stage operations, like cancelling
	109	* of DMA operation or releasing device internal buffers.
	110	*/
	111	dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
	112
0a672d49 SS	113	cleanup_before_linux();
0a672d49 SS	114	}
c609719b	115
5779d8d9	116	static void setup_start_tag (bd_t *bd)
c609719b	117	{
0a672d49	118	params = (struct tag *)bd->bi_boot_params;
c609719b	119
5779d8d9 WD	120	params->hdr.tag = ATAG_CORE;
5779d8d9 WD	121	params->hdr.size = tag_size (tag_core);
c609719b	122
5779d8d9 WD	123	params->u.core.flags = 0;
	124	params->u.core.pagesize = 0;
	125	params->u.core.rootdev = 0;
c609719b	126
5779d8d9	127	params = tag_next (params);
c609719b	128	}
c609719b	129
0a672d49	130	static void setup_memory_tags(bd_t *bd)
c609719b	131	{
5779d8d9	132	int i;
c609719b	133
5779d8d9 WD	134	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
	135	params->hdr.tag = ATAG_MEM;
	136	params->hdr.size = tag_size (tag_mem32);
c609719b	137
5779d8d9 WD	138	params->u.mem.start = bd->bi_dram[i].start;
5779d8d9 WD	139	params->u.mem.size = bd->bi_dram[i].size;
c609719b	140
5779d8d9 WD	141	params = tag_next (params);
5779d8d9 WD	142	}
c609719b	143	}
c609719b	144
0a672d49	145	static void setup_commandline_tag(bd_t bd, char commandline)
c609719b	146	{
5779d8d9	147	char *p;
c609719b	148
109c0e3a WD	149	if (!commandline)
	150	return;
	151
5779d8d9 WD	152	/* eat leading white space */
5779d8d9 WD	153	for (p = commandline; *p == ' '; p++);
c609719b	154
5779d8d9 WD	155	/* skip non-existent command lines so the kernel will still
	156	* use its default command line.
	157	*/
	158	if (*p == '\0')
	159	return;
c609719b	160
5779d8d9 WD	161	params->hdr.tag = ATAG_CMDLINE;
	162	params->hdr.size =
	163	(sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
c609719b	164
5779d8d9	165	strcpy (params->u.cmdline.cmdline, p);
c609719b	166
5779d8d9	167	params = tag_next (params);
c609719b	168	}
c609719b	169
0a672d49	170	static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end)
c609719b	171	{
5779d8d9 WD	172	/* an ATAG_INITRD node tells the kernel where the compressed
	173	* ramdisk can be found. ATAG_RDIMG is a better name, actually.
	174	*/
498b8db7	175	params->hdr.tag = ATAG_INITRD2;
5779d8d9	176	params->hdr.size = tag_size (tag_initrd);
c609719b	177
5779d8d9 WD	178	params->u.initrd.start = initrd_start;
5779d8d9 WD	179	params->u.initrd.size = initrd_end - initrd_start;
c609719b	180
5779d8d9	181	params = tag_next (params);
c609719b WD	182	}
c609719b WD	183
c19d13b0	184	static void setup_serial_tag(struct tag **tmp)
3a574cbe WD	185	{
	186	struct tag params = tmp;
	187	struct tag_serialnr serialnr;
3a574cbe WD	188
	189	get_board_serial(&serialnr);
	190	params->hdr.tag = ATAG_SERIAL;
	191	params->hdr.size = tag_size (tag_serialnr);
	192	params->u.serialnr.low = serialnr.low;
	193	params->u.serialnr.high= serialnr.high;
	194	params = tag_next (params);
	195	*tmp = params;
	196	}
3a574cbe	197
c19d13b0	198	static void setup_revision_tag(struct tag **in_params)
289f932c WD	199	{
289f932c WD	200	u32 rev = 0;
289f932c WD	201
289f932c WD	202	rev = get_board_rev();
289f932c WD	203	params->hdr.tag = ATAG_REVISION;
	204	params->hdr.size = tag_size (tag_revision);
	205	params->u.revision.rev = rev;
	206	params = tag_next (params);
	207	}
289f932c	208
0a672d49	209	static void setup_end_tag(bd_t *bd)
c609719b	210	{
5779d8d9 WD	211	params->hdr.tag = ATAG_NONE;
5779d8d9 WD	212	params->hdr.size = 0;
c609719b WD	213	}
c609719b WD	214
89e6f138 PR	215	__weak void setup_board_tags(struct tag **in_params) {}
89e6f138 PR	216
f510aeae	217	#ifdef CONFIG_ARM64
bb975455 AP	218	static void do_nonsec_virt_switch(void)
bb975455 AP	219	{
0ae76531	220	smp_kick_all_cpus();
dcd468b8	221	dcache_disable(); /* flush cache before swtiching to EL2 */
bb975455	222	}
f510aeae	223	#endif
bb975455	224
0a672d49 SS	225	/* Subcommand: PREP */
	226	static void boot_prep_linux(bootm_headers_t *images)
	227	{
00caae6d	228	char *commandline = env_get("bootargs");
0a672d49	229
c19d13b0	230	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
0a672d49	231	#ifdef CONFIG_OF_LIBFDT
0a672d49	232	debug("using: FDT\n");
6caa1956	233	if (image_setup_linux(images)) {
0a672d49 SS	234	printf("FDT creation failed! hanging...");
	235	hang();
	236	}
0a672d49	237	#endif
c19d13b0	238	} else if (BOOTM_ENABLE_TAGS) {
0a672d49 SS	239	debug("using: ATAGS\n");
0a672d49 SS	240	setup_start_tag(gd->bd);
c19d13b0 SG	241	if (BOOTM_ENABLE_SERIAL_TAG)
	242	setup_serial_tag(&params);
	243	if (BOOTM_ENABLE_CMDLINE_TAG)
	244	setup_commandline_tag(gd->bd, commandline);
	245	if (BOOTM_ENABLE_REVISION_TAG)
	246	setup_revision_tag(&params);
	247	if (BOOTM_ENABLE_MEMORY_TAGS)
	248	setup_memory_tags(gd->bd);
	249	if (BOOTM_ENABLE_INITRD_TAG) {
f7ee071a JC	250	/*
	251	* In boot_ramdisk_high(), it may relocate ramdisk to
	252	* a specified location. And set images->initrd_start &
	253	* images->initrd_end to relocated ramdisk's start/end
	254	* addresses. So use them instead of images->rd_start &
	255	* images->rd_end when possible.
	256	*/
	257	if (images->initrd_start && images->initrd_end) {
	258	setup_initrd_tag(gd->bd, images->initrd_start,
	259	images->initrd_end);
	260	} else if (images->rd_start && images->rd_end) {
c19d13b0 SG	261	setup_initrd_tag(gd->bd, images->rd_start,
	262	images->rd_end);
	263	}
	264	}
89e6f138	265	setup_board_tags(&params);
0a672d49	266	setup_end_tag(gd->bd);
c19d13b0	267	} else {
0a672d49 SS	268	printf("FDT and ATAGS support not compiled in - hanging\n");
0a672d49 SS	269	hang();
0a672d49 SS	270	}
	271	}
	272
f225d39d	273	__weak bool armv7_boot_nonsec_default(void)
8bc347e2	274	{
8bc347e2	275	#ifdef CONFIG_ARMV7_BOOT_SEC_DEFAULT
f225d39d	276	return false;
8bc347e2	277	#else
f225d39d	278	return true;
8bc347e2	279	#endif
f225d39d JMT	280	}
	281
	282	#ifdef CONFIG_ARMV7_NONSEC
	283	bool armv7_boot_nonsec(void)
	284	{
00caae6d	285	char *s = env_get("bootm_boot_mode");
f225d39d	286	bool nonsec = armv7_boot_nonsec_default();
8bc347e2 HG	287
	288	if (s && !strcmp(s, "sec"))
	289	nonsec = false;
	290
	291	if (s && !strcmp(s, "nonsec"))
	292	nonsec = true;
	293
	294	return nonsec;
	295	}
	296	#endif
	297
ec6617c3	298	#ifdef CONFIG_ARM64
e2c18e40 AW	299	__weak void update_os_arch_secondary_cores(uint8_t os_arch)
	300	{
	301	}
	302
ec6617c3 AW	303	#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
	304	static void switch_to_el1(void)
	305	{
	306	if ((IH_ARCH_DEFAULT == IH_ARCH_ARM64) &&
	307	(images.os.arch == IH_ARCH_ARM))
	308	armv8_switch_to_el1(0, (u64)gd->bd->bi_arch_number,
7c5e1feb	309	(u64)images.ft_addr, 0,
ec6617c3 AW	310	(u64)images.ep,
	311	ES_TO_AARCH32);
	312	else
7c5e1feb	313	armv8_switch_to_el1((u64)images.ft_addr, 0, 0, 0,
ec6617c3 AW	314	images.ep,
	315	ES_TO_AARCH64);
	316	}
	317	#endif
	318	#endif
	319
0a672d49	320	/* Subcommand: GO */
bce1b92a	321	static void boot_jump_linux(bootm_headers_t *images, int flag)
0a672d49	322	{
0ae76531	323	#ifdef CONFIG_ARM64
3f1b6beb TR	324	void (kernel_entry)(void fdt_addr, void res0, void res1,
3f1b6beb TR	325	void *res2);
0ae76531 DF	326	int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
0ae76531 DF	327
3f1b6beb TR	328	kernel_entry = (void ()(void fdt_addr, void res0, void res1,
3f1b6beb TR	329	void *res2))images->ep;
0ae76531 DF	330
	331	debug("## Transferring control to Linux (at address %lx)...\n",
	332	(ulong) kernel_entry);
	333	bootstage_mark(BOOTSTAGE_ID_RUN_OS);
	334
	335	announce_and_cleanup(fake);
	336
c19e0dd7	337	if (!fake) {
9a561753	338	#ifdef CONFIG_ARMV8_PSCI
	339	armv8_setup_psci();
	340	#endif
c19e0dd7	341	do_nonsec_virt_switch();
ec6617c3	342
e2c18e40 AW	343	update_os_arch_secondary_cores(images->os.arch);
e2c18e40 AW	344
ec6617c3	345	#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
7c5e1feb	346	armv8_switch_to_el2((u64)images->ft_addr, 0, 0, 0,
ec6617c3 AW	347	(u64)switch_to_el1, ES_TO_AARCH64);
	348	#else
	349	if ((IH_ARCH_DEFAULT == IH_ARCH_ARM64) &&
	350	(images->os.arch == IH_ARCH_ARM))
	351	armv8_switch_to_el2(0, (u64)gd->bd->bi_arch_number,
7c5e1feb	352	(u64)images->ft_addr, 0,
ec6617c3 AW	353	(u64)images->ep,
	354	ES_TO_AARCH32);
	355	else
7c5e1feb	356	armv8_switch_to_el2((u64)images->ft_addr, 0, 0, 0,
ec6617c3 AW	357	images->ep,
	358	ES_TO_AARCH64);
	359	#endif
c19e0dd7	360	}
0ae76531	361	#else
0a672d49 SS	362	unsigned long machid = gd->bd->bi_arch_number;
	363	char *s;
	364	void (*kernel_entry)(int zero, int arch, uint params);
17239976	365	unsigned long r2;
bce1b92a	366	int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
0a672d49 SS	367
0a672d49 SS	368	kernel_entry = (void (*)(int, int, uint))images->ep;
dc89c6fb PC	369	#ifdef CONFIG_CPU_V7M
	370	ulong addr = (ulong)kernel_entry \| 1;
	371	kernel_entry = (void *)addr;
	372	#endif
00caae6d	373	s = env_get("machid");
0a672d49	374	if (s) {
bc3c89b1 PF	375	if (strict_strtoul(s, 16, &machid) < 0) {
	376	debug("strict_strtoul failed!\n");
	377	return;
	378	}
0a672d49 SS	379	printf("Using machid 0x%lx from environment\n", machid);
	380	}
	381
	382	debug("## Transferring control to Linux (at address %08lx)" \
	383	"...\n", (ulong) kernel_entry);
	384	bootstage_mark(BOOTSTAGE_ID_RUN_OS);
bce1b92a	385	announce_and_cleanup(fake);
17239976	386
c19d13b0	387	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
17239976 SW	388	r2 = (unsigned long)images->ft_addr;
17239976 SW	389	else
17239976 SW	390	r2 = gd->bd->bi_boot_params;
17239976 SW	391
c19e0dd7	392	if (!fake) {
104d6fb6	393	#ifdef CONFIG_ARMV7_NONSEC
97a81964	394	if (armv7_boot_nonsec()) {
8bc347e2 HG	395	armv7_init_nonsec();
	396	secure_ram_addr(_do_nonsec_entry)(kernel_entry,
	397	0, machid, r2);
	398	} else
f510aeae	399	#endif
8bc347e2	400	kernel_entry(0, machid, r2);
c19e0dd7	401	}
0ae76531	402	#endif
0a672d49 SS	403	}
	404
	405	/* Main Entry point for arm bootm implementation
	406	*
	407	* Modeled after the powerpc implementation
	408	* DIFFERENCE: Instead of calling prep and go at the end
	409	* they are called if subcommand is equal 0.
	410	*/
8d196e52 EN	411	int do_bootm_linux(int flag, int argc, char * const argv[],
8d196e52 EN	412	bootm_headers_t *images)
0a672d49 SS	413	{
	414	/* No need for those on ARM */
	415	if (flag & BOOTM_STATE_OS_BD_T \|\| flag & BOOTM_STATE_OS_CMDLINE)
	416	return -1;
	417
	418	if (flag & BOOTM_STATE_OS_PREP) {
	419	boot_prep_linux(images);
	420	return 0;
	421	}
	422
bce1b92a SG	423	if (flag & (BOOTM_STATE_OS_GO \| BOOTM_STATE_OS_FAKE_GO)) {
bce1b92a SG	424	boot_jump_linux(images, flag);
0a672d49 SS	425	return 0;
	426	}
	427
	428	boot_prep_linux(images);
bce1b92a	429	boot_jump_linux(images, flag);
0a672d49	430	return 0;
2d1916e4	431	}
44f074c7	432
871a57bb MY	433	#if defined(CONFIG_BOOTM_VXWORKS)
	434	void boot_prep_vxworks(bootm_headers_t *images)
	435	{
	436	#if defined(CONFIG_OF_LIBFDT)
	437	int off;
	438
	439	if (images->ft_addr) {
	440	off = fdt_path_offset(images->ft_addr, "/memory");
	441	if (off < 0) {
e29607ed	442	if (arch_fixup_fdt(images->ft_addr))
871a57bb MY	443	puts("## WARNING: fixup memory failed!\n");
	444	}
	445	}
	446	#endif
	447	cleanup_before_linux();
	448	}
	449	void boot_jump_vxworks(bootm_headers_t *images)
	450	{
	451	/* ARM VxWorks requires device tree physical address to be passed */
	452	((void ()(void ))images->ep)(images->ft_addr);
	453	}
	454	#endif