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

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2019 Google LLC
 * Written by Simon Glass <[email protected]>
 */
#include <common.h>
#include <command.h>
#include <display_options.h>
#include <mapmem.h>
#include <acpi/acpi_table.h>
#include <asm/acpi_table.h>
#include <asm/global_data.h>
#include <dm/acpi.h>

DECLARE_GLOBAL_DATA_PTR;

/**
 * dump_hdr() - Dump an ACPI header
 *
 * If the header is for FACS then it shows the revision information as well
 *
 * @hdr: ACPI header to dump
 */
static void dump_hdr(struct acpi_table_header *hdr)
{
	bool has_hdr = memcmp(hdr->signature, "FACS", ACPI_NAME_LEN);

	printf("%.*s  %08lx  %5x", ACPI_NAME_LEN, hdr->signature,
	       (ulong)map_to_sysmem(hdr), hdr->length);
	if (has_hdr) {
		printf("  v%02d %.6s %.8s %x %.4s %x\n", hdr->revision,
		       hdr->oem_id, hdr->oem_table_id, hdr->oem_revision,
		       hdr->aslc_id, hdr->aslc_revision);
	} else {
		printf("\n");
	}
}

static int dump_table_name(const char *sig)
{
	struct acpi_table_header *hdr;

	hdr = acpi_find_table(sig);
	if (!hdr)
		return -ENOENT;
	printf("%.*s @ %08lx\n", ACPI_NAME_LEN, hdr->signature,
	       (ulong)map_to_sysmem(hdr));
	print_buffer(0, hdr, 1, hdr->length, 0);

	return 0;
}

static void list_fadt(struct acpi_fadt *fadt)
{
	if (fadt->dsdt)
		dump_hdr(map_sysmem(fadt->dsdt, 0));
	if (fadt->firmware_ctrl)
		dump_hdr(map_sysmem(fadt->firmware_ctrl, 0));
}

static int list_rsdt(struct acpi_rsdt *rsdt, struct acpi_xsdt *xsdt)
{
	int len, i, count;

	dump_hdr(&rsdt->header);
	if (xsdt)
		dump_hdr(&xsdt->header);
	len = rsdt->header.length - sizeof(rsdt->header);
	count = len / sizeof(u32);
	for (i = 0; i < count; i++) {
		struct acpi_table_header *hdr;

		if (!rsdt->entry[i])
			break;
		hdr = map_sysmem(rsdt->entry[i], 0);
		dump_hdr(hdr);
		if (!memcmp(hdr->signature, "FACP", ACPI_NAME_LEN))
			list_fadt((struct acpi_fadt *)hdr);
		if (xsdt) {
			if (xsdt->entry[i] != rsdt->entry[i]) {
				printf("   (xsdt mismatch %llx)\n",
				       xsdt->entry[i]);
			}
		}
	}

	return 0;
}

static int list_rsdp(struct acpi_rsdp *rsdp)
{
	struct acpi_rsdt *rsdt;
	struct acpi_xsdt *xsdt;

	printf("RSDP  %08lx  %5x  v%02d %.6s\n", (ulong)map_to_sysmem(rsdp),
	       rsdp->length, rsdp->revision, rsdp->oem_id);
	rsdt = map_sysmem(rsdp->rsdt_address, 0);
	xsdt = map_sysmem(rsdp->xsdt_address, 0);
	list_rsdt(rsdt, xsdt);

	return 0;
}

static int do_acpi_list(struct cmd_tbl *cmdtp, int flag, int argc,
			char *const argv[])
{
	struct acpi_rsdp *rsdp;

	rsdp = map_sysmem(gd_acpi_start(), 0);
	if (!rsdp) {
		printf("No ACPI tables present\n");
		return 0;
	}
	printf("Name      Base   Size  Detail\n");
	printf("----  --------  -----  ------\n");
	list_rsdp(rsdp);

	return 0;
}

static int do_acpi_set(struct cmd_tbl *cmdtp, int flag, int argc,
		       char *const argv[])
{
	ulong val;

	if (argc < 2) {
		printf("ACPI pointer: %lx\n", gd_acpi_start());
	} else {
		val = hextoul(argv[1], NULL);
		printf("Setting ACPI pointer to %lx\n", val);
		gd_set_acpi_start(val);
	}

	return 0;
}

static int do_acpi_items(struct cmd_tbl *cmdtp, int flag, int argc,
			 char *const argv[])
{
	bool dump_contents;

	dump_contents = argc >= 2 && !strcmp("-d", argv[1]);
	if (!IS_ENABLED(CONFIG_ACPIGEN)) {
		printf("Not supported (enable ACPIGEN)\n");
		return CMD_RET_FAILURE;
	}
	acpi_dump_items(dump_contents ? ACPI_DUMP_CONTENTS : ACPI_DUMP_LIST);

	return 0;
}

static int do_acpi_dump(struct cmd_tbl *cmdtp, int flag, int argc,
			char *const argv[])
{
	const char *name;
	char sig[ACPI_NAME_LEN];
	int ret;

	name = argv[1];
	if (strlen(name) != ACPI_NAME_LEN) {
		printf("Table name '%s' must be four characters\n", name);
		return CMD_RET_FAILURE;
	}
	str_to_upper(name, sig, ACPI_NAME_LEN);
	ret = dump_table_name(sig);
	if (ret) {
		printf("Table '%.*s' not found\n", ACPI_NAME_LEN, sig);
		return CMD_RET_FAILURE;
	}

	return 0;
}

#ifdef CONFIG_SYS_LONGHELP
static char acpi_help_text[] =
	"list  - list ACPI tables\n"
	"acpi items [-d]   - List/dump each piece of ACPI data from devices\n"
	"acpi set [<addr>] - Set or show address of ACPI tables\n"
	"acpi dump <name>  - Dump ACPI table";
#endif

U_BOOT_CMD_WITH_SUBCMDS(acpi, "ACPI tables", acpi_help_text,
	U_BOOT_SUBCMD_MKENT(list, 1, 1, do_acpi_list),
	U_BOOT_SUBCMD_MKENT(items, 2, 1, do_acpi_items),
	U_BOOT_SUBCMD_MKENT(set, 2, 1, do_acpi_set),
	U_BOOT_SUBCMD_MKENT(dump, 2, 1, do_acpi_dump));
Commit	Line	Data
0b885bcf SG	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* Copyright 2019 Google LLC
	4	* Written by Simon Glass <[email protected]>
	5	*/
	6	#include <common.h>
	7	#include <command.h>
4e4bf944	8	#include <display_options.h>
0b885bcf SG	9	#include <mapmem.h>
	10	#include <acpi/acpi_table.h>
	11	#include <asm/acpi_table.h>
401d1c4f	12	#include <asm/global_data.h>
0b885bcf SG	13	#include <dm/acpi.h>
	14
	15	DECLARE_GLOBAL_DATA_PTR;
	16
	17	/**
	18	* dump_hdr() - Dump an ACPI header
	19	*
	20	* If the header is for FACS then it shows the revision information as well
	21	*
	22	* @hdr: ACPI header to dump
	23	*/
	24	static void dump_hdr(struct acpi_table_header *hdr)
	25	{
	26	bool has_hdr = memcmp(hdr->signature, "FACS", ACPI_NAME_LEN);
	27
06f6f3d4	28	printf("%.*s %08lx %5x", ACPI_NAME_LEN, hdr->signature,
0b885bcf SG	29	(ulong)map_to_sysmem(hdr), hdr->length);
0b885bcf SG	30	if (has_hdr) {
06f6f3d4	31	printf(" v%02d %.6s %.8s %x %.4s %x\n", hdr->revision,
0b885bcf SG	32	hdr->oem_id, hdr->oem_table_id, hdr->oem_revision,
	33	hdr->aslc_id, hdr->aslc_revision);
	34	} else {
	35	printf("\n");
	36	}
	37	}
	38
0b885bcf SG	39	static int dump_table_name(const char *sig)
	40	{
	41	struct acpi_table_header *hdr;
	42
37bf4407	43	hdr = acpi_find_table(sig);
0b885bcf SG	44	if (!hdr)
	45	return -ENOENT;
	46	printf("%.*s @ %08lx\n", ACPI_NAME_LEN, hdr->signature,
	47	(ulong)map_to_sysmem(hdr));
	48	print_buffer(0, hdr, 1, hdr->length, 0);
	49
	50	return 0;
	51	}
	52
	53	static void list_fadt(struct acpi_fadt *fadt)
	54	{
	55	if (fadt->dsdt)
	56	dump_hdr(map_sysmem(fadt->dsdt, 0));
	57	if (fadt->firmware_ctrl)
	58	dump_hdr(map_sysmem(fadt->firmware_ctrl, 0));
	59	}
	60
	61	static int list_rsdt(struct acpi_rsdt rsdt, struct acpi_xsdt xsdt)
	62	{
	63	int len, i, count;
	64
	65	dump_hdr(&rsdt->header);
	66	if (xsdt)
	67	dump_hdr(&xsdt->header);
	68	len = rsdt->header.length - sizeof(rsdt->header);
	69	count = len / sizeof(u32);
	70	for (i = 0; i < count; i++) {
	71	struct acpi_table_header *hdr;
	72
	73	if (!rsdt->entry[i])
	74	break;
	75	hdr = map_sysmem(rsdt->entry[i], 0);
	76	dump_hdr(hdr);
	77	if (!memcmp(hdr->signature, "FACP", ACPI_NAME_LEN))
	78	list_fadt((struct acpi_fadt *)hdr);
	79	if (xsdt) {
	80	if (xsdt->entry[i] != rsdt->entry[i]) {
	81	printf(" (xsdt mismatch %llx)\n",
	82	xsdt->entry[i]);
	83	}
	84	}
	85	}
	86
	87	return 0;
	88	}
	89
	90	static int list_rsdp(struct acpi_rsdp *rsdp)
	91	{
	92	struct acpi_rsdt *rsdt;
	93	struct acpi_xsdt *xsdt;
	94
06f6f3d4	95	printf("RSDP %08lx %5x v%02d %.6s\n", (ulong)map_to_sysmem(rsdp),
0b885bcf SG	96	rsdp->length, rsdp->revision, rsdp->oem_id);
	97	rsdt = map_sysmem(rsdp->rsdt_address, 0);
	98	xsdt = map_sysmem(rsdp->xsdt_address, 0);
	99	list_rsdt(rsdt, xsdt);
	100
	101	return 0;
	102	}
	103
09140113	104	static int do_acpi_list(struct cmd_tbl *cmdtp, int flag, int argc,
0b885bcf SG	105	char *const argv[])
	106	{
	107	struct acpi_rsdp *rsdp;
	108
233f0e35	109	rsdp = map_sysmem(gd_acpi_start(), 0);
0b885bcf SG	110	if (!rsdp) {
	111	printf("No ACPI tables present\n");
	112	return 0;
	113	}
06f6f3d4 SG	114	printf("Name Base Size Detail\n");
06f6f3d4 SG	115	printf("---- -------- ----- ------\n");
0b885bcf SG	116	list_rsdp(rsdp);
	117
	118	return 0;
	119	}
	120
29718414 SG	121	static int do_acpi_set(struct cmd_tbl *cmdtp, int flag, int argc,
	122	char *const argv[])
	123	{
	124	ulong val;
	125
	126	if (argc < 2) {
	127	printf("ACPI pointer: %lx\n", gd_acpi_start());
	128	} else {
	129	val = hextoul(argv[1], NULL);
	130	printf("Setting ACPI pointer to %lx\n", val);
	131	gd_set_acpi_start(val);
	132	}
	133
	134	return 0;
	135	}
	136
a4f82089 SG	137	static int do_acpi_items(struct cmd_tbl *cmdtp, int flag, int argc,
	138	char *const argv[])
	139	{
	140	bool dump_contents;
	141
	142	dump_contents = argc >= 2 && !strcmp("-d", argv[1]);
0992a90d SG	143	if (!IS_ENABLED(CONFIG_ACPIGEN)) {
	144	printf("Not supported (enable ACPIGEN)\n");
	145	return CMD_RET_FAILURE;
	146	}
a4f82089 SG	147	acpi_dump_items(dump_contents ? ACPI_DUMP_CONTENTS : ACPI_DUMP_LIST);
	148
	149	return 0;
	150	}
	151
09140113	152	static int do_acpi_dump(struct cmd_tbl *cmdtp, int flag, int argc,
0b885bcf SG	153	char *const argv[])
	154	{
	155	const char *name;
	156	char sig[ACPI_NAME_LEN];
	157	int ret;
	158
0b885bcf SG	159	name = argv[1];
	160	if (strlen(name) != ACPI_NAME_LEN) {
	161	printf("Table name '%s' must be four characters\n", name);
	162	return CMD_RET_FAILURE;
	163	}
3849ca7b	164	str_to_upper(name, sig, ACPI_NAME_LEN);
0b885bcf SG	165	ret = dump_table_name(sig);
	166	if (ret) {
	167	printf("Table '%.*s' not found\n", ACPI_NAME_LEN, sig);
	168	return CMD_RET_FAILURE;
	169	}
	170
	171	return 0;
	172	}
	173
907bcd3a	174	#ifdef CONFIG_SYS_LONGHELP
0b885bcf	175	static char acpi_help_text[] =
29718414 SG	176	"list - list ACPI tables\n"
	177	"acpi items [-d] - List/dump each piece of ACPI data from devices\n"
	178	"acpi set [<addr>] - Set or show address of ACPI tables\n"
	179	"acpi dump <name> - Dump ACPI table";
907bcd3a	180	#endif
0b885bcf SG	181
	182	U_BOOT_CMD_WITH_SUBCMDS(acpi, "ACPI tables", acpi_help_text,
	183	U_BOOT_SUBCMD_MKENT(list, 1, 1, do_acpi_list),
a4f82089	184	U_BOOT_SUBCMD_MKENT(items, 2, 1, do_acpi_items),
29718414	185	U_BOOT_SUBCMD_MKENT(set, 2, 1, do_acpi_set),
0b885bcf	186	U_BOOT_SUBCMD_MKENT(dump, 2, 1, do_acpi_dump));