[J-u-boot.git] / cmd / booti.c

/*
 * (C) Copyright 2000-2009
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <bootm.h>
#include <command.h>
#include <image.h>
#include <lmb.h>
#include <mapmem.h>

DECLARE_GLOBAL_DATA_PTR;

/* See Documentation/arm64/booting.txt in the Linux kernel */
struct Image_header {
	uint32_t	code0;		/* Executable code */
	uint32_t	code1;		/* Executable code */
	uint64_t	text_offset;	/* Image load offset, LE */
	uint64_t	image_size;	/* Effective Image size, LE */
	uint64_t	res1;		/* reserved */
	uint64_t	res2;		/* reserved */
	uint64_t	res3;		/* reserved */
	uint64_t	res4;		/* reserved */
	uint32_t	magic;		/* Magic number */
	uint32_t	res5;
};

#define LINUX_ARM64_IMAGE_MAGIC	0x644d5241

static int booti_setup(bootm_headers_t *images)
{
	struct Image_header *ih;
	uint64_t dst;
	uint64_t image_size;

	ih = (struct Image_header *)map_sysmem(images->ep, 0);

	if (ih->magic != le32_to_cpu(LINUX_ARM64_IMAGE_MAGIC)) {
		puts("Bad Linux ARM64 Image magic!\n");
		return 1;
	}
	
	if (ih->image_size == 0) {
		puts("Image lacks image_size field, assuming 16MiB\n");
		image_size = 16 << 20;
	} else {
		image_size = le64_to_cpu(ih->image_size);
	}

	/*
	 * If we are not at the correct run-time location, set the new
	 * correct location and then move the image there.
	 */
	dst = gd->bd->bi_dram[0].start + le64_to_cpu(ih->text_offset);

	unmap_sysmem(ih);

	if (images->ep != dst) {
		void *src;

		debug("Moving Image from 0x%lx to 0x%llx\n", images->ep, dst);

		src = (void *)images->ep;
		images->ep = dst;
		memmove((void *)dst, src, image_size);
	}

	return 0;
}

/*
 * Image booting support
 */
static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc,
			char * const argv[], bootm_headers_t *images)
{
	int ret;
	struct Image_header *ih;

	ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
			      images, 1);

	/* Setup Linux kernel Image entry point */
	if (!argc) {
		images->ep = load_addr;
		debug("*  kernel: default image load address = 0x%08lx\n",
				load_addr);
	} else {
		images->ep = simple_strtoul(argv[0], NULL, 16);
		debug("*  kernel: cmdline image address = 0x%08lx\n",
			images->ep);
	}

	ret = booti_setup(images);
	if (ret != 0)
		return 1;

	ih = (struct Image_header *)map_sysmem(images->ep, 0);

	lmb_reserve(&images->lmb, images->ep, le32_to_cpu(ih->image_size));

	unmap_sysmem(ih);

	/*
	 * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
	 * have a header that provide this informaiton.
	 */
	if (bootm_find_images(flag, argc, argv))
		return 1;

	return 0;
}

int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	int ret;

	/* Consume 'booti' */
	argc--; argv++;

	if (booti_start(cmdtp, flag, argc, argv, &images))
		return 1;

	/*
	 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
	 * disable interrupts ourselves
	 */
	bootm_disable_interrupts();

	images.os.os = IH_OS_LINUX;
	ret = do_bootm_states(cmdtp, flag, argc, argv,
			      BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
			      BOOTM_STATE_OS_GO,
			      &images, 1);

	return ret;
}

#ifdef CONFIG_SYS_LONGHELP
static char booti_help_text[] =
	"[addr [initrd[:size]] [fdt]]\n"
	"    - boot arm64 Linux Image stored in memory\n"
	"\tThe argument 'initrd' is optional and specifies the address\n"
	"\tof an initrd in memory. The optional parameter ':size' allows\n"
	"\tspecifying the size of a RAW initrd.\n"
#if defined(CONFIG_OF_LIBFDT)
	"\tSince booting a Linux kernel requires a flat device-tree, a\n"
	"\tthird argument providing the address of the device-tree blob\n"
	"\tis required. To boot a kernel with a device-tree blob but\n"
	"\twithout an initrd image, use a '-' for the initrd argument.\n"
#endif
	"";
#endif

U_BOOT_CMD(
	booti,	CONFIG_SYS_MAXARGS,	1,	do_booti,
	"boot arm64 Linux Image image from memory", booti_help_text
);
Commit	Line	Data
5db28905 TR	1	/*
	2	* (C) Copyright 2000-2009
	3	* Wolfgang Denk, DENX Software Engineering, [email protected].
	4	*
	5	* SPDX-License-Identifier: GPL-2.0+
	6	*/
	7
	8	#include <common.h>
	9	#include <bootm.h>
	10	#include <command.h>
	11	#include <image.h>
	12	#include <lmb.h>
	13	#include <mapmem.h>
	14
	15	DECLARE_GLOBAL_DATA_PTR;
	16
	17	/* See Documentation/arm64/booting.txt in the Linux kernel */
	18	struct Image_header {
	19	uint32_t code0; /* Executable code */
	20	uint32_t code1; /* Executable code */
	21	uint64_t text_offset; /* Image load offset, LE */
	22	uint64_t image_size; /* Effective Image size, LE */
	23	uint64_t res1; /* reserved */
	24	uint64_t res2; /* reserved */
	25	uint64_t res3; /* reserved */
	26	uint64_t res4; /* reserved */
	27	uint32_t magic; /* Magic number */
	28	uint32_t res5;
	29	};
	30
	31	#define LINUX_ARM64_IMAGE_MAGIC 0x644d5241
	32
	33	static int booti_setup(bootm_headers_t *images)
	34	{
	35	struct Image_header *ih;
	36	uint64_t dst;
	37	uint64_t image_size;
	38
	39	ih = (struct Image_header *)map_sysmem(images->ep, 0);
	40
	41	if (ih->magic != le32_to_cpu(LINUX_ARM64_IMAGE_MAGIC)) {
	42	puts("Bad Linux ARM64 Image magic!\n");
	43	return 1;
	44	}
	45
	46	if (ih->image_size == 0) {
	47	puts("Image lacks image_size field, assuming 16MiB\n");
	48	image_size = 16 << 20;
	49	} else {
	50	image_size = le64_to_cpu(ih->image_size);
	51	}
	52
	53	/*
	54	* If we are not at the correct run-time location, set the new
	55	* correct location and then move the image there.
	56	*/
	57	dst = gd->bd->bi_dram[0].start + le64_to_cpu(ih->text_offset);
	58
	59	unmap_sysmem(ih);
	60
	61	if (images->ep != dst) {
	62	void *src;
	63
	64	debug("Moving Image from 0x%lx to 0x%llx\n", images->ep, dst);
65
66	src = (void *)images->ep;
67	images->ep = dst;
68	memmove((void *)dst, src, image_size);
69	}
70
71	return 0;
72	}
73
74	/*
75	* Image booting support
76	*/
77	static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc,
78	char * const argv[], bootm_headers_t *images)
79	{
80	int ret;
81	struct Image_header *ih;
82
83	ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
84	images, 1);
85
86	/* Setup Linux kernel Image entry point */
87	if (!argc) {
88	images->ep = load_addr;
89	debug("* kernel: default image load address = 0x%08lx\n",
90	load_addr);
91	} else {
92	images->ep = simple_strtoul(argv[0], NULL, 16);
93	debug("* kernel: cmdline image address = 0x%08lx\n",
94	images->ep);
95	}
96
97	ret = booti_setup(images);
98	if (ret != 0)
99	return 1;
100
101	ih = (struct Image_header *)map_sysmem(images->ep, 0);
102
103	lmb_reserve(&images->lmb, images->ep, le32_to_cpu(ih->image_size));
104
105	unmap_sysmem(ih);
106
107	/*
108	* Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
109	* have a header that provide this informaiton.
110	*/
111	if (bootm_find_images(flag, argc, argv))
112	return 1;
113
114	return 0;
115	}
116
117	int do_booti(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
118	{
119	int ret;
120
121	/* Consume 'booti' */
122	argc--; argv++;
123
124	if (booti_start(cmdtp, flag, argc, argv, &images))
125	return 1;
126
127	/*
128	* We are doing the BOOTM_STATE_LOADOS state ourselves, so must
129	* disable interrupts ourselves
130	*/
131	bootm_disable_interrupts();
132
133	images.os.os = IH_OS_LINUX;
134	ret = do_bootm_states(cmdtp, flag, argc, argv,
135	BOOTM_STATE_OS_PREP \| BOOTM_STATE_OS_FAKE_GO \|
136	BOOTM_STATE_OS_GO,
137	&images, 1);
138
139	return ret;
140	}
141
142	#ifdef CONFIG_SYS_LONGHELP
143	static char booti_help_text[] =
144	"[addr [initrd[:size]] [fdt]]\n"
145	" - boot arm64 Linux Image stored in memory\n"
146	"\tThe argument 'initrd' is optional and specifies the address\n"
147	"\tof an initrd in memory. The optional parameter ':size' allows\n"
148	"\tspecifying the size of a RAW initrd.\n"
149	#if defined(CONFIG_OF_LIBFDT)
150	"\tSince booting a Linux kernel requires a flat device-tree, a\n"
151	"\tthird argument providing the address of the device-tree blob\n"
152	"\tis required. To boot a kernel with a device-tree blob but\n"
153	"\twithout an initrd image, use a '-' for the initrd argument.\n"
154	#endif
155	"";
156	#endif
157
158	U_BOOT_CMD(
159	booti, CONFIG_SYS_MAXARGS, 1, do_booti,
160	"boot arm64 Linux Image image from memory", booti_help_text
161	);