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

// SPDX-License-Identifier: GPL-2.0+
/* Copyright (C) 2011
 * Corscience GmbH & Co. KG - Simon Schwarz <[email protected]>
 *  - Added prep subcommand support
 *  - Reorganized source - modeled after powerpc version
 *
 * (C) Copyright 2002
 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Marius Groeger <[email protected]>
 *
 * Copyright (C) 2001  Erik Mouw ([email protected])
 */

#include <common.h>
#include <command.h>
#include <dm.h>
#include <dm/root.h>
#include <env.h>
#include <image.h>
#include <u-boot/zlib.h>
#include <asm/byteorder.h>
#include <linux/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 (!gd->bd->bi_dram[bank].size ||
		    sp < gd->bd->bi_dram[bank].start)
			continue;
		/* Watch out for RAM at end of address space! */
		bank_end = gd->bd->bi_dram[bank].start +
			gd->bd->bi_dram[bank].size - 1;
		if (sp > bank_end)
			continue;
		lmb_reserve(lmb, sp, bank_end - sp + 1);
		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)
{
	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();

	printf("\nStarting kernel ...%s\n\n", fake ?
		"(fake run for tracing)" : "");
	/*
	 * 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)
{
#if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)
	armv8_setup_psci();
	smp_kick_all_cpus();
#endif

	/* ARM VxWorks requires device tree physical address to be passed */
	((void (*)(void *))images->ep)(images->ft_addr);
}
#endif
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
0a672d49 SS	2	/* Copyright (C) 2011
	3	* Corscience GmbH & Co. KG - Simon Schwarz <[email protected]>
	4	* - Added prep subcommand support
	5	* - Reorganized source - modeled after powerpc version
	6	*
c609719b WD	7	* (C) Copyright 2002
	8	* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
	9	* Marius Groeger <[email protected]>
	10	*
	11	* Copyright (C) 2001 Erik Mouw ([email protected])
c609719b WD	12	*/
	13
	14	#include <common.h>
	15	#include <command.h>
9d922450	16	#include <dm.h>
1b8220aa	17	#include <dm/root.h>
7b51b576	18	#include <env.h>
c609719b	19	#include <image.h>
a31e091a	20	#include <u-boot/zlib.h>
c609719b	21	#include <asm/byteorder.h>
b08c8c48	22	#include <linux/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	67	for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
f8878da5 SG	68	if (!gd->bd->bi_dram[bank].size \|\|
f8878da5 SG	69	sp < gd->bd->bi_dram[bank].start)
15751403	70	continue;
f8878da5	71	/* Watch out for RAM at end of address space! */
15751403	72	bank_end = gd->bd->bi_dram[bank].start +
f8878da5 SG	73	gd->bd->bi_dram[bank].size - 1;
f8878da5 SG	74	if (sp > bank_end)
15751403	75	continue;
f8878da5	76	lmb_reserve(lmb, sp, bank_end - sp + 1);
15751403 SW	77	break;
15751403 SW	78	}
2d1916e4 JR	79	}
2d1916e4 JR	80
b7b8410a AG	81	__weak void board_quiesce_devices(void)
	82	{
	83	}
	84
bce1b92a SG	85	/**
	86	* announce_and_cleanup() - Print message and prepare for kernel boot
	87	*
	88	* @fake: non-zero to do everything except actually boot
	89	*/
	90	static void announce_and_cleanup(int fake)
2d1916e4	91	{
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
6dad56d7 K	106	printf("\nStarting kernel ...%s\n\n", fake ?
6dad56d7 K	107	"(fake run for tracing)" : "");
1b8220aa SR	108	/*
	109	* Call remove function of all devices with a removal flag set.
	110	* This may be useful for last-stage operations, like cancelling
	111	* of DMA operation or releasing device internal buffers.
	112	*/
	113	dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
	114
0a672d49 SS	115	cleanup_before_linux();
0a672d49 SS	116	}
c609719b	117
5779d8d9	118	static void setup_start_tag (bd_t *bd)
c609719b	119	{
0a672d49	120	params = (struct tag *)bd->bi_boot_params;
c609719b	121
5779d8d9 WD	122	params->hdr.tag = ATAG_CORE;
5779d8d9 WD	123	params->hdr.size = tag_size (tag_core);
c609719b	124
5779d8d9 WD	125	params->u.core.flags = 0;
	126	params->u.core.pagesize = 0;
	127	params->u.core.rootdev = 0;
c609719b	128
5779d8d9	129	params = tag_next (params);
c609719b	130	}
c609719b	131
0a672d49	132	static void setup_memory_tags(bd_t *bd)
c609719b	133	{
5779d8d9	134	int i;
c609719b	135
5779d8d9 WD	136	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
	137	params->hdr.tag = ATAG_MEM;
	138	params->hdr.size = tag_size (tag_mem32);
c609719b	139
5779d8d9 WD	140	params->u.mem.start = bd->bi_dram[i].start;
5779d8d9 WD	141	params->u.mem.size = bd->bi_dram[i].size;
c609719b	142
5779d8d9 WD	143	params = tag_next (params);
5779d8d9 WD	144	}
c609719b	145	}
c609719b	146
0a672d49	147	static void setup_commandline_tag(bd_t bd, char commandline)
c609719b	148	{
5779d8d9	149	char *p;
c609719b	150
109c0e3a WD	151	if (!commandline)
	152	return;
	153
5779d8d9 WD	154	/* eat leading white space */
5779d8d9 WD	155	for (p = commandline; *p == ' '; p++);
c609719b	156
5779d8d9 WD	157	/* skip non-existent command lines so the kernel will still
	158	* use its default command line.
	159	*/
	160	if (*p == '\0')
	161	return;
c609719b	162
5779d8d9 WD	163	params->hdr.tag = ATAG_CMDLINE;
	164	params->hdr.size =
	165	(sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
c609719b	166
5779d8d9	167	strcpy (params->u.cmdline.cmdline, p);
c609719b	168
5779d8d9	169	params = tag_next (params);
c609719b	170	}
c609719b	171
0a672d49	172	static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end)
c609719b	173	{
5779d8d9 WD	174	/* an ATAG_INITRD node tells the kernel where the compressed
	175	* ramdisk can be found. ATAG_RDIMG is a better name, actually.
	176	*/
498b8db7	177	params->hdr.tag = ATAG_INITRD2;
5779d8d9	178	params->hdr.size = tag_size (tag_initrd);
c609719b	179
5779d8d9 WD	180	params->u.initrd.start = initrd_start;
5779d8d9 WD	181	params->u.initrd.size = initrd_end - initrd_start;
c609719b	182
5779d8d9	183	params = tag_next (params);
c609719b WD	184	}
c609719b WD	185
c19d13b0	186	static void setup_serial_tag(struct tag **tmp)
3a574cbe WD	187	{
	188	struct tag params = tmp;
	189	struct tag_serialnr serialnr;
3a574cbe WD	190
	191	get_board_serial(&serialnr);
	192	params->hdr.tag = ATAG_SERIAL;
	193	params->hdr.size = tag_size (tag_serialnr);
	194	params->u.serialnr.low = serialnr.low;
	195	params->u.serialnr.high= serialnr.high;
	196	params = tag_next (params);
	197	*tmp = params;
	198	}
3a574cbe	199
c19d13b0	200	static void setup_revision_tag(struct tag **in_params)
289f932c WD	201	{
289f932c WD	202	u32 rev = 0;
289f932c WD	203
289f932c WD	204	rev = get_board_rev();
289f932c WD	205	params->hdr.tag = ATAG_REVISION;
	206	params->hdr.size = tag_size (tag_revision);
	207	params->u.revision.rev = rev;
	208	params = tag_next (params);
	209	}
289f932c	210
0a672d49	211	static void setup_end_tag(bd_t *bd)
c609719b	212	{
5779d8d9 WD	213	params->hdr.tag = ATAG_NONE;
5779d8d9 WD	214	params->hdr.size = 0;
c609719b WD	215	}
c609719b WD	216
89e6f138 T	217	__weak void setup_board_tags(struct tag **in_params) {}
89e6f138 T	218
f510aeae	219	#ifdef CONFIG_ARM64
bb975455 AP	220	static void do_nonsec_virt_switch(void)
bb975455 AP	221	{
0ae76531	222	smp_kick_all_cpus();
dcd468b8	223	dcache_disable(); /* flush cache before swtiching to EL2 */
bb975455	224	}
f510aeae	225	#endif
bb975455	226
0a672d49 SS	227	/* Subcommand: PREP */
	228	static void boot_prep_linux(bootm_headers_t *images)
	229	{
00caae6d	230	char *commandline = env_get("bootargs");
0a672d49	231
c19d13b0	232	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
0a672d49	233	#ifdef CONFIG_OF_LIBFDT
0a672d49	234	debug("using: FDT\n");
6caa1956	235	if (image_setup_linux(images)) {
0a672d49 SS	236	printf("FDT creation failed! hanging...");
	237	hang();
	238	}
0a672d49	239	#endif
c19d13b0	240	} else if (BOOTM_ENABLE_TAGS) {
0a672d49 SS	241	debug("using: ATAGS\n");
0a672d49 SS	242	setup_start_tag(gd->bd);
c19d13b0 SG	243	if (BOOTM_ENABLE_SERIAL_TAG)
	244	setup_serial_tag(&params);
	245	if (BOOTM_ENABLE_CMDLINE_TAG)
	246	setup_commandline_tag(gd->bd, commandline);
	247	if (BOOTM_ENABLE_REVISION_TAG)
	248	setup_revision_tag(&params);
	249	if (BOOTM_ENABLE_MEMORY_TAGS)
	250	setup_memory_tags(gd->bd);
	251	if (BOOTM_ENABLE_INITRD_TAG) {
f7ee071a JC	252	/*
	253	* In boot_ramdisk_high(), it may relocate ramdisk to
	254	* a specified location. And set images->initrd_start &
	255	* images->initrd_end to relocated ramdisk's start/end
	256	* addresses. So use them instead of images->rd_start &
	257	* images->rd_end when possible.
	258	*/
	259	if (images->initrd_start && images->initrd_end) {
	260	setup_initrd_tag(gd->bd, images->initrd_start,
	261	images->initrd_end);
	262	} else if (images->rd_start && images->rd_end) {
c19d13b0 SG	263	setup_initrd_tag(gd->bd, images->rd_start,
	264	images->rd_end);
	265	}
	266	}
89e6f138	267	setup_board_tags(&params);
0a672d49	268	setup_end_tag(gd->bd);
c19d13b0	269	} else {
0a672d49 SS	270	printf("FDT and ATAGS support not compiled in - hanging\n");
0a672d49 SS	271	hang();
0a672d49 SS	272	}
	273	}
	274
f225d39d	275	__weak bool armv7_boot_nonsec_default(void)
8bc347e2	276	{
8bc347e2	277	#ifdef CONFIG_ARMV7_BOOT_SEC_DEFAULT
f225d39d	278	return false;
8bc347e2	279	#else
f225d39d	280	return true;
8bc347e2	281	#endif
f225d39d JMT	282	}
	283
	284	#ifdef CONFIG_ARMV7_NONSEC
	285	bool armv7_boot_nonsec(void)
	286	{
00caae6d	287	char *s = env_get("bootm_boot_mode");
f225d39d	288	bool nonsec = armv7_boot_nonsec_default();
8bc347e2 HG	289
	290	if (s && !strcmp(s, "sec"))
	291	nonsec = false;
	292
	293	if (s && !strcmp(s, "nonsec"))
	294	nonsec = true;
	295
	296	return nonsec;
	297	}
	298	#endif
	299
ec6617c3	300	#ifdef CONFIG_ARM64
e2c18e40 AW	301	__weak void update_os_arch_secondary_cores(uint8_t os_arch)
	302	{
	303	}
	304
ec6617c3 AW	305	#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
	306	static void switch_to_el1(void)
	307	{
	308	if ((IH_ARCH_DEFAULT == IH_ARCH_ARM64) &&
	309	(images.os.arch == IH_ARCH_ARM))
	310	armv8_switch_to_el1(0, (u64)gd->bd->bi_arch_number,
7c5e1feb	311	(u64)images.ft_addr, 0,
ec6617c3 AW	312	(u64)images.ep,
	313	ES_TO_AARCH32);
	314	else
7c5e1feb	315	armv8_switch_to_el1((u64)images.ft_addr, 0, 0, 0,
ec6617c3 AW	316	images.ep,
	317	ES_TO_AARCH64);
	318	}
	319	#endif
	320	#endif
	321
0a672d49	322	/* Subcommand: GO */
bce1b92a	323	static void boot_jump_linux(bootm_headers_t *images, int flag)
0a672d49	324	{
0ae76531	325	#ifdef CONFIG_ARM64
3f1b6beb TR	326	void (kernel_entry)(void fdt_addr, void res0, void res1,
3f1b6beb TR	327	void *res2);
0ae76531 DF	328	int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
0ae76531 DF	329
3f1b6beb TR	330	kernel_entry = (void ()(void fdt_addr, void res0, void res1,
3f1b6beb TR	331	void *res2))images->ep;
0ae76531 DF	332
	333	debug("## Transferring control to Linux (at address %lx)...\n",
	334	(ulong) kernel_entry);
	335	bootstage_mark(BOOTSTAGE_ID_RUN_OS);
	336
	337	announce_and_cleanup(fake);
	338
c19e0dd7	339	if (!fake) {
9a561753	340	#ifdef CONFIG_ARMV8_PSCI
	341	armv8_setup_psci();
	342	#endif
c19e0dd7	343	do_nonsec_virt_switch();
ec6617c3	344
e2c18e40 AW	345	update_os_arch_secondary_cores(images->os.arch);
e2c18e40 AW	346
ec6617c3	347	#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
7c5e1feb	348	armv8_switch_to_el2((u64)images->ft_addr, 0, 0, 0,
ec6617c3 AW	349	(u64)switch_to_el1, ES_TO_AARCH64);
	350	#else
	351	if ((IH_ARCH_DEFAULT == IH_ARCH_ARM64) &&
	352	(images->os.arch == IH_ARCH_ARM))
	353	armv8_switch_to_el2(0, (u64)gd->bd->bi_arch_number,
7c5e1feb	354	(u64)images->ft_addr, 0,
ec6617c3 AW	355	(u64)images->ep,
	356	ES_TO_AARCH32);
	357	else
7c5e1feb	358	armv8_switch_to_el2((u64)images->ft_addr, 0, 0, 0,
ec6617c3 AW	359	images->ep,
	360	ES_TO_AARCH64);
	361	#endif
c19e0dd7	362	}
0ae76531	363	#else
0a672d49 SS	364	unsigned long machid = gd->bd->bi_arch_number;
	365	char *s;
	366	void (*kernel_entry)(int zero, int arch, uint params);
17239976	367	unsigned long r2;
bce1b92a	368	int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
0a672d49 SS	369
0a672d49 SS	370	kernel_entry = (void (*)(int, int, uint))images->ep;
dc89c6fb PC	371	#ifdef CONFIG_CPU_V7M
	372	ulong addr = (ulong)kernel_entry \| 1;
	373	kernel_entry = (void *)addr;
	374	#endif
00caae6d	375	s = env_get("machid");
0a672d49	376	if (s) {
bc3c89b1 PF	377	if (strict_strtoul(s, 16, &machid) < 0) {
	378	debug("strict_strtoul failed!\n");
	379	return;
	380	}
0a672d49 SS	381	printf("Using machid 0x%lx from environment\n", machid);
	382	}
	383
	384	debug("## Transferring control to Linux (at address %08lx)" \
	385	"...\n", (ulong) kernel_entry);
	386	bootstage_mark(BOOTSTAGE_ID_RUN_OS);
bce1b92a	387	announce_and_cleanup(fake);
17239976	388
c19d13b0	389	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
17239976 SW	390	r2 = (unsigned long)images->ft_addr;
17239976 SW	391	else
17239976 SW	392	r2 = gd->bd->bi_boot_params;
17239976 SW	393
c19e0dd7	394	if (!fake) {
104d6fb6	395	#ifdef CONFIG_ARMV7_NONSEC
97a81964	396	if (armv7_boot_nonsec()) {
8bc347e2 HG	397	armv7_init_nonsec();
	398	secure_ram_addr(_do_nonsec_entry)(kernel_entry,
	399	0, machid, r2);
	400	} else
f510aeae	401	#endif
8bc347e2	402	kernel_entry(0, machid, r2);
c19e0dd7	403	}
0ae76531	404	#endif
0a672d49 SS	405	}
	406
	407	/* Main Entry point for arm bootm implementation
	408	*
	409	* Modeled after the powerpc implementation
	410	* DIFFERENCE: Instead of calling prep and go at the end
	411	* they are called if subcommand is equal 0.
	412	*/
8d196e52 EN	413	int do_bootm_linux(int flag, int argc, char * const argv[],
8d196e52 EN	414	bootm_headers_t *images)
0a672d49 SS	415	{
	416	/* No need for those on ARM */
	417	if (flag & BOOTM_STATE_OS_BD_T \|\| flag & BOOTM_STATE_OS_CMDLINE)
	418	return -1;
	419
	420	if (flag & BOOTM_STATE_OS_PREP) {
	421	boot_prep_linux(images);
	422	return 0;
	423	}
	424
bce1b92a SG	425	if (flag & (BOOTM_STATE_OS_GO \| BOOTM_STATE_OS_FAKE_GO)) {
bce1b92a SG	426	boot_jump_linux(images, flag);
0a672d49 SS	427	return 0;
	428	}
	429
	430	boot_prep_linux(images);
bce1b92a	431	boot_jump_linux(images, flag);
0a672d49	432	return 0;
2d1916e4	433	}
44f074c7	434
871a57bb MY	435	#if defined(CONFIG_BOOTM_VXWORKS)
	436	void boot_prep_vxworks(bootm_headers_t *images)
	437	{
	438	#if defined(CONFIG_OF_LIBFDT)
	439	int off;
	440
	441	if (images->ft_addr) {
	442	off = fdt_path_offset(images->ft_addr, "/memory");
7f1cb1d5	443	if (off > 0) {
e29607ed	444	if (arch_fixup_fdt(images->ft_addr))
871a57bb MY	445	puts("## WARNING: fixup memory failed!\n");
	446	}
	447	}
	448	#endif
	449	cleanup_before_linux();
	450	}
	451	void boot_jump_vxworks(bootm_headers_t *images)
	452	{
3194daa1 VV	453	#if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)
	454	armv8_setup_psci();
	455	smp_kick_all_cpus();
	456	#endif
	457
871a57bb MY	458	/* ARM VxWorks requires device tree physical address to be passed */
	459	((void ()(void ))images->ep)(images->ft_addr);
	460	}
	461	#endif