[u-boot.git] / lib / acpi / acpi_table.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Generic code used to generate ACPI tables
 *
 * Copyright 2019 Google LLC
 */

#include <common.h>
#include <dm.h>
#include <cpu.h>
#include <log.h>
#include <mapmem.h>
#include <tables_csum.h>
#include <version.h>
#include <acpi/acpi_table.h>
#include <asm/global_data.h>
#include <dm/acpi.h>

int acpi_create_dmar(struct acpi_dmar *dmar, enum dmar_flags flags)
{
	struct acpi_table_header *header = &dmar->header;
	struct cpu_info info;
	struct udevice *cpu;
	int ret;

	ret = uclass_first_device(UCLASS_CPU, &cpu);
	if (ret)
		return log_msg_ret("cpu", ret);
	ret = cpu_get_info(cpu, &info);
	if (ret)
		return log_msg_ret("info", ret);
	memset((void *)dmar, 0, sizeof(struct acpi_dmar));

	/* Fill out header fields. */
	acpi_fill_header(&dmar->header, "DMAR");
	header->length = sizeof(struct acpi_dmar);
	header->revision = acpi_get_table_revision(ACPITAB_DMAR);

	dmar->host_address_width = info.address_width - 1;
	dmar->flags = flags;

	return 0;
}

int acpi_get_table_revision(enum acpi_tables table)
{
	switch (table) {
	case ACPITAB_FADT:
		return ACPI_FADT_REV_ACPI_3_0;
	case ACPITAB_MADT:
		return ACPI_MADT_REV_ACPI_3_0;
	case ACPITAB_MCFG:
		return ACPI_MCFG_REV_ACPI_3_0;
	case ACPITAB_TCPA:
		/* This version and the rest are open-coded */
		return 2;
	case ACPITAB_TPM2:
		return 4;
	case ACPITAB_SSDT: /* ACPI 3.0 upto 6.3: 2 */
		return 2;
	case ACPITAB_SRAT: /* ACPI 2.0: 1, ACPI 3.0: 2, ACPI 4.0 to 6.3: 3 */
		return 1; /* TODO Should probably be upgraded to 2 */
	case ACPITAB_DMAR:
		return 1;
	case ACPITAB_SLIT: /* ACPI 2.0 upto 6.3: 1 */
		return 1;
	case ACPITAB_SPMI: /* IMPI 2.0 */
		return 5;
	case ACPITAB_HPET: /* Currently 1. Table added in ACPI 2.0 */
		return 1;
	case ACPITAB_VFCT: /* ACPI 2.0/3.0/4.0: 1 */
		return 1;
	case ACPITAB_IVRS:
		return IVRS_FORMAT_FIXED;
	case ACPITAB_DBG2:
		return 0;
	case ACPITAB_FACS: /* ACPI 2.0/3.0: 1, ACPI 4.0 to 6.3: 2 */
		return 1;
	case ACPITAB_RSDT: /* ACPI 1.0 upto 6.3: 1 */
		return 1;
	case ACPITAB_XSDT: /* ACPI 2.0 upto 6.3: 1 */
		return 1;
	case ACPITAB_RSDP: /* ACPI 2.0 upto 6.3: 2 */
		return 2;
	case ACPITAB_HEST:
		return 1;
	case ACPITAB_NHLT:
		return 5;
	case ACPITAB_BERT:
		return 1;
	case ACPITAB_SPCR:
		return 2;
	default:
		return -EINVAL;
	}
}

void acpi_fill_header(struct acpi_table_header *header, char *signature)
{
	memcpy(header->signature, signature, 4);
	memcpy(header->oem_id, OEM_ID, 6);
	memcpy(header->oem_table_id, OEM_TABLE_ID, 8);
	header->oem_revision = U_BOOT_BUILD_DATE;
	memcpy(header->aslc_id, ASLC_ID, 4);
}

void acpi_align(struct acpi_ctx *ctx)
{
	ctx->current = (void *)ALIGN((ulong)ctx->current, 16);
}

void acpi_align64(struct acpi_ctx *ctx)
{
	ctx->current = (void *)ALIGN((ulong)ctx->current, 64);
}

void acpi_inc(struct acpi_ctx *ctx, uint amount)
{
	ctx->current += amount;
}

void acpi_inc_align(struct acpi_ctx *ctx, uint amount)
{
	ctx->current += amount;
	acpi_align(ctx);
}

/**
 * Add an ACPI table to the RSDT (and XSDT) structure, recalculate length
 * and checksum.
 */
int acpi_add_table(struct acpi_ctx *ctx, void *table)
{
	int i, entries_num;
	struct acpi_rsdt *rsdt;
	struct acpi_xsdt *xsdt;

	/* The RSDT is mandatory while the XSDT is not */
	rsdt = ctx->rsdt;

	/* This should always be MAX_ACPI_TABLES */
	entries_num = ARRAY_SIZE(rsdt->entry);

	for (i = 0; i < entries_num; i++) {
		if (rsdt->entry[i] == 0)
			break;
	}

	if (i >= entries_num) {
		log_err("ACPI: Error: too many tables\n");
		return -E2BIG;
	}

	/* Add table to the RSDT */
	rsdt->entry[i] = map_to_sysmem(table);

	/* Fix RSDT length or the kernel will assume invalid entries */
	rsdt->header.length = sizeof(struct acpi_table_header) +
				(sizeof(u32) * (i + 1));

	/* Re-calculate checksum */
	rsdt->header.checksum = 0;
	rsdt->header.checksum = table_compute_checksum((u8 *)rsdt,
						       rsdt->header.length);

	/*
	 * And now the same thing for the XSDT. We use the same index as for
	 * now we want the XSDT and RSDT to always be in sync in U-Boot
	 */
	xsdt = ctx->xsdt;

	/* Add table to the XSDT */
	xsdt->entry[i] = map_to_sysmem(table);

	/* Fix XSDT length */
	xsdt->header.length = sizeof(struct acpi_table_header) +
				(sizeof(u64) * (i + 1));

	/* Re-calculate checksum */
	xsdt->header.checksum = 0;
	xsdt->header.checksum = table_compute_checksum((u8 *)xsdt,
						       xsdt->header.length);

	return 0;
}

void acpi_write_rsdp(struct acpi_rsdp *rsdp, struct acpi_rsdt *rsdt,
		     struct acpi_xsdt *xsdt)
{
	memset(rsdp, 0, sizeof(struct acpi_rsdp));

	memcpy(rsdp->signature, RSDP_SIG, 8);
	memcpy(rsdp->oem_id, OEM_ID, 6);

	rsdp->length = sizeof(struct acpi_rsdp);
	rsdp->rsdt_address = map_to_sysmem(rsdt);

	rsdp->xsdt_address = map_to_sysmem(xsdt);
	rsdp->revision = ACPI_RSDP_REV_ACPI_2_0;

	/* Calculate checksums */
	rsdp->checksum = table_compute_checksum(rsdp, 20);
	rsdp->ext_checksum = table_compute_checksum(rsdp,
						    sizeof(struct acpi_rsdp));
}

static void acpi_write_rsdt(struct acpi_rsdt *rsdt)
{
	struct acpi_table_header *header = &rsdt->header;

	/* Fill out header fields */
	acpi_fill_header(header, "RSDT");
	header->length = sizeof(struct acpi_rsdt);
	header->revision = 1;

	/* Entries are filled in later, we come with an empty set */

	/* Fix checksum */
	header->checksum = table_compute_checksum(rsdt,
						  sizeof(struct acpi_rsdt));
}

static void acpi_write_xsdt(struct acpi_xsdt *xsdt)
{
	struct acpi_table_header *header = &xsdt->header;

	/* Fill out header fields */
	acpi_fill_header(header, "XSDT");
	header->length = sizeof(struct acpi_xsdt);
	header->revision = 1;

	/* Entries are filled in later, we come with an empty set */

	/* Fix checksum */
	header->checksum = table_compute_checksum(xsdt,
						  sizeof(struct acpi_xsdt));
}

void acpi_setup_base_tables(struct acpi_ctx *ctx, void *start)
{
	ctx->base = start;
	ctx->current = start;

	/* Align ACPI tables to 16 byte */
	acpi_align(ctx);
	gd->arch.acpi_start = map_to_sysmem(ctx->current);

	/* We need at least an RSDP and an RSDT Table */
	ctx->rsdp = ctx->current;
	acpi_inc_align(ctx, sizeof(struct acpi_rsdp));
	ctx->rsdt = ctx->current;
	acpi_inc_align(ctx, sizeof(struct acpi_rsdt));
	ctx->xsdt = ctx->current;
	acpi_inc_align(ctx, sizeof(struct acpi_xsdt));

	/* clear all table memory */
	memset((void *)start, '\0', ctx->current - start);

	acpi_write_rsdp(ctx->rsdp, ctx->rsdt, ctx->xsdt);
	acpi_write_rsdt(ctx->rsdt);
	acpi_write_xsdt(ctx->xsdt);
	/*
	 * Per ACPI spec, the FACS table address must be aligned to a 64 byte
	 * boundary (Windows checks this, but Linux does not).
	 */
	acpi_align64(ctx);
}

void acpi_create_dbg2(struct acpi_dbg2_header *dbg2,
		      int port_type, int port_subtype,
		      struct acpi_gen_regaddr *address, u32 address_size,
		      const char *device_path)
{
	uintptr_t current;
	struct acpi_dbg2_device *device;
	u32 *dbg2_addr_size;
	struct acpi_table_header *header;
	size_t path_len;
	const char *path;
	char *namespace;

	/* Fill out header fields. */
	current = (uintptr_t)dbg2;
	memset(dbg2, '\0', sizeof(struct acpi_dbg2_header));
	header = &dbg2->header;

	header->revision = acpi_get_table_revision(ACPITAB_DBG2);
	acpi_fill_header(header, "DBG2");
	header->aslc_revision = ASL_REVISION;

	/* One debug device defined */
	dbg2->devices_offset = sizeof(struct acpi_dbg2_header);
	dbg2->devices_count = 1;
	current += sizeof(struct acpi_dbg2_header);

	/* Device comes after the header */
	device = (struct acpi_dbg2_device *)current;
	memset(device, 0, sizeof(struct acpi_dbg2_device));
	current += sizeof(struct acpi_dbg2_device);

	device->revision = 0;
	device->address_count = 1;
	device->port_type = port_type;
	device->port_subtype = port_subtype;

	/* Base Address comes after device structure */
	memcpy((void *)current, address, sizeof(struct acpi_gen_regaddr));
	device->base_address_offset = current - (uintptr_t)device;
	current += sizeof(struct acpi_gen_regaddr);

	/* Address Size comes after address structure */
	dbg2_addr_size = (uint32_t *)current;
	device->address_size_offset = current - (uintptr_t)device;
	*dbg2_addr_size = address_size;
	current += sizeof(uint32_t);

	/* Namespace string comes last, use '.' if not provided */
	path = device_path ? : ".";
	/* Namespace string length includes NULL terminator */
	path_len = strlen(path) + 1;
	namespace = (char *)current;
	device->namespace_string_length = path_len;
	device->namespace_string_offset = current - (uintptr_t)device;
	strncpy(namespace, path, path_len);
	current += path_len;

	/* Update structure lengths and checksum */
	device->length = current - (uintptr_t)device;
	header->length = current - (uintptr_t)dbg2;
	header->checksum = table_compute_checksum(dbg2, header->length);
}
Commit	Line	Data
91fe8b79 SG	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* Generic code used to generate ACPI tables
	4	*
	5	* Copyright 2019 Google LLC
	6	*/
	7
	8	#include <common.h>
bfeb5d46 SG	9	#include <dm.h>
bfeb5d46 SG	10	#include <cpu.h>
f7ae49fc	11	#include <log.h>
29b35112 SG	12	#include <mapmem.h>
29b35112 SG	13	#include <tables_csum.h>
93f7f827	14	#include <version.h>
86e1778d	15	#include <acpi/acpi_table.h>
401d1c4f	16	#include <asm/global_data.h>
86e1778d	17	#include <dm/acpi.h>
bfeb5d46	18
bfeb5d46 SG	19	int acpi_create_dmar(struct acpi_dmar *dmar, enum dmar_flags flags)
	20	{
	21	struct acpi_table_header *header = &dmar->header;
	22	struct cpu_info info;
	23	struct udevice *cpu;
	24	int ret;
	25
	26	ret = uclass_first_device(UCLASS_CPU, &cpu);
	27	if (ret)
	28	return log_msg_ret("cpu", ret);
	29	ret = cpu_get_info(cpu, &info);
	30	if (ret)
	31	return log_msg_ret("info", ret);
	32	memset((void *)dmar, 0, sizeof(struct acpi_dmar));
	33
	34	/* Fill out header fields. */
	35	acpi_fill_header(&dmar->header, "DMAR");
	36	header->length = sizeof(struct acpi_dmar);
	37	header->revision = acpi_get_table_revision(ACPITAB_DMAR);
	38
	39	dmar->host_address_width = info.address_width - 1;
	40	dmar->flags = flags;
	41
	42	return 0;
	43	}
91fe8b79 SG	44
	45	int acpi_get_table_revision(enum acpi_tables table)
	46	{
	47	switch (table) {
	48	case ACPITAB_FADT:
	49	return ACPI_FADT_REV_ACPI_3_0;
	50	case ACPITAB_MADT:
	51	return ACPI_MADT_REV_ACPI_3_0;
	52	case ACPITAB_MCFG:
	53	return ACPI_MCFG_REV_ACPI_3_0;
	54	case ACPITAB_TCPA:
	55	/* This version and the rest are open-coded */
	56	return 2;
	57	case ACPITAB_TPM2:
	58	return 4;
	59	case ACPITAB_SSDT: /* ACPI 3.0 upto 6.3: 2 */
	60	return 2;
	61	case ACPITAB_SRAT: /* ACPI 2.0: 1, ACPI 3.0: 2, ACPI 4.0 to 6.3: 3 */
	62	return 1; /* TODO Should probably be upgraded to 2 */
	63	case ACPITAB_DMAR:
	64	return 1;
	65	case ACPITAB_SLIT: /* ACPI 2.0 upto 6.3: 1 */
	66	return 1;
	67	case ACPITAB_SPMI: /* IMPI 2.0 */
	68	return 5;
	69	case ACPITAB_HPET: /* Currently 1. Table added in ACPI 2.0 */
	70	return 1;
	71	case ACPITAB_VFCT: /* ACPI 2.0/3.0/4.0: 1 */
	72	return 1;
	73	case ACPITAB_IVRS:
	74	return IVRS_FORMAT_FIXED;
	75	case ACPITAB_DBG2:
	76	return 0;
	77	case ACPITAB_FACS: /* ACPI 2.0/3.0: 1, ACPI 4.0 to 6.3: 2 */
	78	return 1;
	79	case ACPITAB_RSDT: /* ACPI 1.0 upto 6.3: 1 */
	80	return 1;
	81	case ACPITAB_XSDT: /* ACPI 2.0 upto 6.3: 1 */
	82	return 1;
	83	case ACPITAB_RSDP: /* ACPI 2.0 upto 6.3: 2 */
	84	return 2;
	85	case ACPITAB_HEST:
	86	return 1;
	87	case ACPITAB_NHLT:
	88	return 5;
	89	case ACPITAB_BERT:
	90	return 1;
	91	case ACPITAB_SPCR:
	92	return 2;
	93	default:
	94	return -EINVAL;
	95	}
	96	}
93f7f827 SG	97
	98	void acpi_fill_header(struct acpi_table_header header, char signature)
	99	{
	100	memcpy(header->signature, signature, 4);
	101	memcpy(header->oem_id, OEM_ID, 6);
	102	memcpy(header->oem_table_id, OEM_TABLE_ID, 8);
	103	header->oem_revision = U_BOOT_BUILD_DATE;
	104	memcpy(header->aslc_id, ASLC_ID, 4);
	105	}
86e1778d SG	106
	107	void acpi_align(struct acpi_ctx *ctx)
	108	{
	109	ctx->current = (void *)ALIGN((ulong)ctx->current, 16);
	110	}
	111
	112	void acpi_align64(struct acpi_ctx *ctx)
	113	{
	114	ctx->current = (void *)ALIGN((ulong)ctx->current, 64);
	115	}
	116
	117	void acpi_inc(struct acpi_ctx *ctx, uint amount)
	118	{
	119	ctx->current += amount;
	120	}
	121
	122	void acpi_inc_align(struct acpi_ctx *ctx, uint amount)
	123	{
	124	ctx->current += amount;
	125	acpi_align(ctx);
	126	}
29b35112 SG	127
	128	/**
	129	* Add an ACPI table to the RSDT (and XSDT) structure, recalculate length
	130	* and checksum.
	131	*/
	132	int acpi_add_table(struct acpi_ctx ctx, void table)
	133	{
	134	int i, entries_num;
	135	struct acpi_rsdt *rsdt;
	136	struct acpi_xsdt *xsdt;
	137
	138	/* The RSDT is mandatory while the XSDT is not */
	139	rsdt = ctx->rsdt;
	140
	141	/* This should always be MAX_ACPI_TABLES */
	142	entries_num = ARRAY_SIZE(rsdt->entry);
	143
	144	for (i = 0; i < entries_num; i++) {
	145	if (rsdt->entry[i] == 0)
	146	break;
	147	}
	148
	149	if (i >= entries_num) {
	150	log_err("ACPI: Error: too many tables\n");
	151	return -E2BIG;
	152	}
	153
	154	/* Add table to the RSDT */
	155	rsdt->entry[i] = map_to_sysmem(table);
	156
	157	/* Fix RSDT length or the kernel will assume invalid entries */
	158	rsdt->header.length = sizeof(struct acpi_table_header) +
	159	(sizeof(u32) * (i + 1));
	160
	161	/* Re-calculate checksum */
	162	rsdt->header.checksum = 0;
	163	rsdt->header.checksum = table_compute_checksum((u8 *)rsdt,
	164	rsdt->header.length);
	165
	166	/*
	167	* And now the same thing for the XSDT. We use the same index as for
	168	* now we want the XSDT and RSDT to always be in sync in U-Boot
	169	*/
b38309b7	170	xsdt = ctx->xsdt;
29b35112 SG	171
	172	/* Add table to the XSDT */
	173	xsdt->entry[i] = map_to_sysmem(table);
	174
	175	/* Fix XSDT length */
	176	xsdt->header.length = sizeof(struct acpi_table_header) +
	177	(sizeof(u64) * (i + 1));
	178
	179	/* Re-calculate checksum */
	180	xsdt->header.checksum = 0;
	181	xsdt->header.checksum = table_compute_checksum((u8 *)xsdt,
	182	xsdt->header.length);
	183
	184	return 0;
	185	}
7e586f69	186
d2cb7a22 SG	187	void acpi_write_rsdp(struct acpi_rsdp rsdp, struct acpi_rsdt rsdt,
d2cb7a22 SG	188	struct acpi_xsdt *xsdt)
7e586f69 SG	189	{
	190	memset(rsdp, 0, sizeof(struct acpi_rsdp));
	191
	192	memcpy(rsdp->signature, RSDP_SIG, 8);
	193	memcpy(rsdp->oem_id, OEM_ID, 6);
	194
	195	rsdp->length = sizeof(struct acpi_rsdp);
	196	rsdp->rsdt_address = map_to_sysmem(rsdt);
	197
	198	rsdp->xsdt_address = map_to_sysmem(xsdt);
	199	rsdp->revision = ACPI_RSDP_REV_ACPI_2_0;
	200
	201	/* Calculate checksums */
	202	rsdp->checksum = table_compute_checksum(rsdp, 20);
	203	rsdp->ext_checksum = table_compute_checksum(rsdp,
	204	sizeof(struct acpi_rsdp));
	205	}
	206
	207	static void acpi_write_rsdt(struct acpi_rsdt *rsdt)
	208	{
	209	struct acpi_table_header *header = &rsdt->header;
	210
	211	/* Fill out header fields */
	212	acpi_fill_header(header, "RSDT");
	213	header->length = sizeof(struct acpi_rsdt);
	214	header->revision = 1;
	215
	216	/* Entries are filled in later, we come with an empty set */
	217
	218	/* Fix checksum */
	219	header->checksum = table_compute_checksum(rsdt,
	220	sizeof(struct acpi_rsdt));
	221	}
	222
	223	static void acpi_write_xsdt(struct acpi_xsdt *xsdt)
	224	{
	225	struct acpi_table_header *header = &xsdt->header;
	226
	227	/* Fill out header fields */
	228	acpi_fill_header(header, "XSDT");
	229	header->length = sizeof(struct acpi_xsdt);
	230	header->revision = 1;
	231
	232	/* Entries are filled in later, we come with an empty set */
	233
	234	/* Fix checksum */
	235	header->checksum = table_compute_checksum(xsdt,
	236	sizeof(struct acpi_xsdt));
	237	}
	238
	239	void acpi_setup_base_tables(struct acpi_ctx ctx, void start)
	240	{
61cc9339	241	ctx->base = start;
7e586f69 SG	242	ctx->current = start;
	243
	244	/* Align ACPI tables to 16 byte */
	245	acpi_align(ctx);
0b885bcf	246	gd->arch.acpi_start = map_to_sysmem(ctx->current);
7e586f69 SG	247
	248	/* We need at least an RSDP and an RSDT Table */
	249	ctx->rsdp = ctx->current;
	250	acpi_inc_align(ctx, sizeof(struct acpi_rsdp));
	251	ctx->rsdt = ctx->current;
	252	acpi_inc_align(ctx, sizeof(struct acpi_rsdt));
b38309b7	253	ctx->xsdt = ctx->current;
7e586f69 SG	254	acpi_inc_align(ctx, sizeof(struct acpi_xsdt));
	255
	256	/* clear all table memory */
	257	memset((void *)start, '\0', ctx->current - start);
	258
b38309b7	259	acpi_write_rsdp(ctx->rsdp, ctx->rsdt, ctx->xsdt);
7e586f69	260	acpi_write_rsdt(ctx->rsdt);
b38309b7	261	acpi_write_xsdt(ctx->xsdt);
7e586f69 SG	262	/*
	263	* Per ACPI spec, the FACS table address must be aligned to a 64 byte
	264	* boundary (Windows checks this, but Linux does not).
	265	*/
	266	acpi_align64(ctx);
	267	}
f37979e7 SG	268
	269	void acpi_create_dbg2(struct acpi_dbg2_header *dbg2,
	270	int port_type, int port_subtype,
	271	struct acpi_gen_regaddr *address, u32 address_size,
	272	const char *device_path)
	273	{
	274	uintptr_t current;
	275	struct acpi_dbg2_device *device;
	276	u32 *dbg2_addr_size;
	277	struct acpi_table_header *header;
	278	size_t path_len;
	279	const char *path;
	280	char *namespace;
	281
	282	/* Fill out header fields. */
	283	current = (uintptr_t)dbg2;
	284	memset(dbg2, '\0', sizeof(struct acpi_dbg2_header));
	285	header = &dbg2->header;
	286
	287	header->revision = acpi_get_table_revision(ACPITAB_DBG2);
	288	acpi_fill_header(header, "DBG2");
	289	header->aslc_revision = ASL_REVISION;
	290
	291	/* One debug device defined */
	292	dbg2->devices_offset = sizeof(struct acpi_dbg2_header);
	293	dbg2->devices_count = 1;
	294	current += sizeof(struct acpi_dbg2_header);
	295
	296	/* Device comes after the header */
	297	device = (struct acpi_dbg2_device *)current;
	298	memset(device, 0, sizeof(struct acpi_dbg2_device));
	299	current += sizeof(struct acpi_dbg2_device);
	300
	301	device->revision = 0;
	302	device->address_count = 1;
	303	device->port_type = port_type;
	304	device->port_subtype = port_subtype;
	305
	306	/* Base Address comes after device structure */
	307	memcpy((void *)current, address, sizeof(struct acpi_gen_regaddr));
	308	device->base_address_offset = current - (uintptr_t)device;
	309	current += sizeof(struct acpi_gen_regaddr);
	310
	311	/* Address Size comes after address structure */
	312	dbg2_addr_size = (uint32_t *)current;
	313	device->address_size_offset = current - (uintptr_t)device;
	314	*dbg2_addr_size = address_size;
	315	current += sizeof(uint32_t);
	316
	317	/* Namespace string comes last, use '.' if not provided */
	318	path = device_path ? : ".";
	319	/* Namespace string length includes NULL terminator */
	320	path_len = strlen(path) + 1;
	321	namespace = (char *)current;
	322	device->namespace_string_length = path_len;
	323	device->namespace_string_offset = current - (uintptr_t)device;
	324	strncpy(namespace, path, path_len);
	325	current += path_len;
	326
	327	/* Update structure lengths and checksum */
	328	device->length = current - (uintptr_t)device;
	329	header->length = current - (uintptr_t)dbg2;
	330	header->checksum = table_compute_checksum(dbg2, header->length);
	331	}