blob: c736adf5fb55241ecb564a796496b2fad32e3b67 [file] [log] [blame]
/******************************************************************************
*
* Module Name: apdump - Dump routines for ACPI tables (acpidump)
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2015, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#include "acpidump.h"
/* Local prototypes */
static int
ap_dump_table_buffer(struct acpi_table_header *table,
u32 instance, acpi_physical_address address);
/******************************************************************************
*
* FUNCTION: ap_is_valid_header
*
* PARAMETERS: table - Pointer to table to be validated
*
* RETURN: TRUE if the header appears to be valid. FALSE otherwise
*
* DESCRIPTION: Check for a valid ACPI table header
*
******************************************************************************/
u8 ap_is_valid_header(struct acpi_table_header *table)
{
if (!ACPI_VALIDATE_RSDP_SIG(table->signature)) {
/* Make sure signature is all ASCII and a valid ACPI name */
if (!acpi_ut_valid_acpi_name(table->signature)) {
acpi_log_error("Table signature (0x%8.8X) is invalid\n",
*(u32 *)table->signature);
return (FALSE);
}
/* Check for minimum table length */
if (table->length < sizeof(struct acpi_table_header)) {
acpi_log_error("Table length (0x%8.8X) is invalid\n",
table->length);
return (FALSE);
}
}
return (TRUE);
}
/******************************************************************************
*
* FUNCTION: ap_is_valid_checksum
*
* PARAMETERS: table - Pointer to table to be validated
*
* RETURN: TRUE if the checksum appears to be valid. FALSE otherwise.
*
* DESCRIPTION: Check for a valid ACPI table checksum.
*
******************************************************************************/
u8 ap_is_valid_checksum(struct acpi_table_header *table)
{
acpi_status status;
struct acpi_table_rsdp *rsdp;
if (ACPI_VALIDATE_RSDP_SIG(table->signature)) {
/*
* Checksum for RSDP.
* Note: Other checksums are computed during the table dump.
*/
rsdp = ACPI_CAST_PTR(struct acpi_table_rsdp, table);
status = acpi_tb_validate_rsdp(rsdp);
} else {
status = acpi_tb_verify_checksum(table, table->length);
}
if (ACPI_FAILURE(status)) {
acpi_log_error("%4.4s: Warning: wrong checksum in table\n",
table->signature);
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: ap_get_table_length
*
* PARAMETERS: table - Pointer to the table
*
* RETURN: Table length
*
* DESCRIPTION: Obtain table length according to table signature.
*
******************************************************************************/
u32 ap_get_table_length(struct acpi_table_header *table)
{
struct acpi_table_rsdp *rsdp;
/* Check if table is valid */
if (!ap_is_valid_header(table)) {
return (0);
}
if (ACPI_VALIDATE_RSDP_SIG(table->signature)) {
rsdp = ACPI_CAST_PTR(struct acpi_table_rsdp, table);
return (acpi_tb_get_rsdp_length(rsdp));
}
/* Normal ACPI table */
return (table->length);
}
/******************************************************************************
*
* FUNCTION: ap_dump_table_buffer
*
* PARAMETERS: table - ACPI table to be dumped
* instance - ACPI table instance no. to be dumped
* address - Physical address of the table
*
* RETURN: None
*
* DESCRIPTION: Dump an ACPI table in standard ASCII hex format, with a
* header that is compatible with the acpi_xtract utility.
*
******************************************************************************/
static int
ap_dump_table_buffer(struct acpi_table_header *table,
u32 instance, acpi_physical_address address)
{
u32 table_length;
table_length = ap_get_table_length(table);
/* Print only the header if requested */
if (gbl_summary_mode) {
acpi_tb_print_table_header(address, table);
return (0);
}
/* Dump to binary file if requested */
if (gbl_binary_mode) {
return (ap_write_to_binary_file(table, instance));
}
/*
* Dump the table with header for use with acpixtract utility.
* Note: simplest to just always emit a 64-bit address. acpi_xtract
* utility can handle this.
*/
acpi_ut_file_printf(gbl_output_file, "%4.4s @ 0x%8.8X%8.8X\n",
table->signature, ACPI_FORMAT_UINT64(address));
acpi_ut_dump_buffer_to_file(gbl_output_file,
ACPI_CAST_PTR(u8, table), table_length,
DB_BYTE_DISPLAY, 0);
acpi_ut_file_printf(gbl_output_file, "\n");
return (0);
}
/******************************************************************************
*
* FUNCTION: ap_dump_all_tables
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Get all tables from the RSDT/XSDT (or at least all of the
* tables that we can possibly get).
*
******************************************************************************/
int ap_dump_all_tables(void)
{
struct acpi_table_header *table;
u32 instance = 0;
acpi_physical_address address;
acpi_status status;
int table_status;
u32 i;
/* Get and dump all available ACPI tables */
for (i = 0; i < AP_MAX_ACPI_FILES; i++) {
status =
acpi_os_get_table_by_index(i, &table, &instance, &address);
if (ACPI_FAILURE(status)) {
/* AE_LIMIT means that no more tables are available */
if (status == AE_LIMIT) {
return (0);
} else if (i == 0) {
acpi_log_error
("Could not get ACPI tables, %s\n",
acpi_format_exception(status));
return (-1);
} else {
acpi_log_error
("Could not get ACPI table at index %u, %s\n",
i, acpi_format_exception(status));
continue;
}
}
table_status = ap_dump_table_buffer(table, instance, address);
ACPI_FREE(table);
if (table_status) {
break;
}
}
/* Something seriously bad happened if the loop terminates here */
return (-1);
}
/******************************************************************************
*
* FUNCTION: ap_dump_table_by_address
*
* PARAMETERS: ascii_address - Address for requested ACPI table
*
* RETURN: Status
*
* DESCRIPTION: Get an ACPI table via a physical address and dump it.
*
******************************************************************************/
int ap_dump_table_by_address(char *ascii_address)
{
acpi_physical_address address;
struct acpi_table_header *table;
acpi_status status;
int table_status;
u64 long_address;
/* Convert argument to an integer physical address */
status = acpi_ut_strtoul64(ascii_address, 0, &long_address);
if (ACPI_FAILURE(status)) {
acpi_log_error("%s: Could not convert to a physical address\n",
ascii_address);
return (-1);
}
address = (acpi_physical_address) long_address;
status = acpi_os_get_table_by_address(address, &table);
if (ACPI_FAILURE(status)) {
acpi_log_error("Could not get table at 0x%8.8X%8.8X, %s\n",
ACPI_FORMAT_UINT64(address),
acpi_format_exception(status));
return (-1);
}
table_status = ap_dump_table_buffer(table, 0, address);
ACPI_FREE(table);
return (table_status);
}
/******************************************************************************
*
* FUNCTION: ap_dump_table_by_name
*
* PARAMETERS: signature - Requested ACPI table signature
*
* RETURN: Status
*
* DESCRIPTION: Get an ACPI table via a signature and dump it. Handles
* multiple tables with the same signature (SSDTs).
*
******************************************************************************/
int ap_dump_table_by_name(char *signature)
{
char local_signature[ACPI_NAME_SIZE + 1];
u32 instance;
struct acpi_table_header *table;
acpi_physical_address address;
acpi_status status;
int table_status;
if (ACPI_STRLEN(signature) != ACPI_NAME_SIZE) {
acpi_log_error
("Invalid table signature [%s]: must be exactly 4 characters\n",
signature);
return (-1);
}
/* Table signatures are expected to be uppercase */
ACPI_STRCPY(local_signature, signature);
acpi_ut_strupr(local_signature);
/* To be friendly, handle tables whose signatures do not match the name */
if (ACPI_COMPARE_NAME(local_signature, "FADT")) {
ACPI_STRCPY(local_signature, ACPI_SIG_FADT);
} else if (ACPI_COMPARE_NAME(local_signature, "MADT")) {
ACPI_STRCPY(local_signature, ACPI_SIG_MADT);
}
/* Dump all instances of this signature (to handle multiple SSDTs) */
for (instance = 0; instance < AP_MAX_ACPI_FILES; instance++) {
status = acpi_os_get_table_by_name(local_signature, instance,
&table, &address);
if (ACPI_FAILURE(status)) {
/* AE_LIMIT means that no more tables are available */
if (status == AE_LIMIT) {
return (0);
}
acpi_log_error
("Could not get ACPI table with signature [%s], %s\n",
local_signature, acpi_format_exception(status));
return (-1);
}
table_status = ap_dump_table_buffer(table, instance, address);
ACPI_FREE(table);
if (table_status) {
break;
}
}
/* Something seriously bad happened if the loop terminates here */
return (-1);
}
/******************************************************************************
*
* FUNCTION: ap_dump_table_from_file
*
* PARAMETERS: pathname - File containing the binary ACPI table
*
* RETURN: Status
*
* DESCRIPTION: Dump an ACPI table from a binary file
*
******************************************************************************/
int ap_dump_table_from_file(char *pathname)
{
struct acpi_table_header *table;
u32 file_size = 0;
int table_status = -1;
/* Get the entire ACPI table from the file */
table = ap_get_table_from_file(pathname, &file_size);
if (!table) {
return (-1);
}
/* File must be at least as long as the table length */
if (table->length > file_size) {
acpi_log_error
("Table length (0x%X) is too large for input file (0x%X) %s\n",
table->length, file_size, pathname);
goto exit;
}
if (gbl_verbose_mode) {
acpi_log_error
("Input file: %s contains table [%4.4s], 0x%X (%u) bytes\n",
pathname, table->signature, file_size, file_size);
}
table_status = ap_dump_table_buffer(table, 0, 0);
exit:
ACPI_FREE(table);
return (table_status);
}