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/*
* (c) Alexey Starikovskiy, Intel, 2005.
* 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.
*/
#ifdef DEFINE_ALTERNATE_TYPES
/* hack to enable building old application with new headers -lenb */
#define acpi_fadt_descriptor acpi_table_fadt
#define acpi_rsdp_descriptor acpi_table_rsdp
#define DSDT_SIG ACPI_SIG_DSDT
#define FACS_SIG ACPI_SIG_FACS
#define FADT_SIG ACPI_SIG_FADT
#define xfirmware_ctrl Xfacs
#define firmware_ctrl facs
typedef int s32;
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
typedef unsigned long long u64;
typedef long long s64;
#endif
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#include <acpi/acconfig.h>
#include <acpi/platform/acenv.h>
#include <acpi/actypes.h>
#include <acpi/actbl.h>
static inline u8 checksum(u8 * buffer, u32 length)
{
u8 sum = 0, *i = buffer;
buffer += length;
for (; i < buffer; sum += *(i++));
return sum;
}
static unsigned long psz, addr, length;
static int print, connect;
static u8 select_sig[4];
static unsigned long read_efi_systab( void )
{
FILE *f = fopen("/sys/firmware/efi/systab", "r");
if (f) {
char buffer[80];
while (fgets(buffer, 80, f)) {
unsigned long addr;
if (sscanf(buffer, "ACPI20=0x%lx", &addr) == 1)
return addr;
}
fclose(f);
}
return 0;
}
static u8 *acpi_map_memory(unsigned long where, unsigned length)
{
int fd = open("/dev/mem", O_RDONLY);
if (fd < 0) {
fprintf(stderr, "acpi_os_map_memory: cannot open /dev/mem\n");
exit(1);
}
unsigned long offset = where % psz;
u8 *there = mmap(NULL, length + offset, PROT_READ, MAP_PRIVATE,
fd, where - offset);
close(fd);
if (there == MAP_FAILED) return 0;
return (there + offset);
}
static void acpi_unmap_memory(u8 * there, unsigned length)
{
unsigned long offset = (unsigned long)there % psz;
munmap(there - offset, length + offset);
}
static struct acpi_table_header *acpi_map_table(unsigned long where, char *sig)
{
struct acpi_table_header *tbl = (struct acpi_table_header *)
acpi_map_memory(where, sizeof(struct acpi_table_header));
if (!tbl || (sig && memcmp(sig, tbl->signature, 4))) return 0;
unsigned size = tbl->length;
acpi_unmap_memory((u8 *) tbl, sizeof(struct acpi_table_header));
return (struct acpi_table_header *)acpi_map_memory(where, size);
}
static void acpi_unmap_table(struct acpi_table_header *tbl)
{
acpi_unmap_memory((u8 *)tbl, tbl->length);
}
static struct acpi_rsdp_descriptor *acpi_scan_for_rsdp(u8 *begin, u32 length)
{
u8 *i, *end = begin + length;
/* Search from given start address for the requested length */
for (i = begin; i < end; i += ACPI_RSDP_SCAN_STEP) {
/* The signature and checksum must both be correct */
if (memcmp((char *)i, "RSD PTR ", 8)) continue;
struct acpi_rsdp_descriptor *rsdp = (struct acpi_rsdp_descriptor *)i;
/* Signature matches, check the appropriate checksum */
if (!checksum((u8 *) rsdp, (rsdp->revision < 2) ?
ACPI_RSDP_CHECKSUM_LENGTH :
ACPI_RSDP_XCHECKSUM_LENGTH))
/* Checksum valid, we have found a valid RSDP */
return rsdp;
}
/* Searched entire block, no RSDP was found */
return 0;
}
/*
* Output data
*/
static void acpi_show_data(int fd, u8 * data, int size)
{
char buffer[256];
int i, remain = size;
while (remain > 0) {
int len = snprintf(buffer, 256, " %04x:", size - remain);
for (i = 0; i < 16 && i < remain; i++) {
len +=
snprintf(&buffer[len], 256 - len, " %02x", data[i]);
}
for (; i < 16; i++) {
len += snprintf(&buffer[len], 256 - len, " ");
}
len += snprintf(&buffer[len], 256 - len, " ");
for (i = 0; i < 16 && i < remain; i++) {
buffer[len++] = (isprint(data[i])) ? data[i] : '.';
}
buffer[len++] = '\n';
write(fd, buffer, len);
data += 16;
remain -= 16;
}
}
/*
* Output ACPI table
*/
static void acpi_show_table(int fd, struct acpi_table_header *table, unsigned long addr)
{
char buff[80];
int len = snprintf(buff, 80, "%.4s @ %p\n", table->signature, (void *)addr);
write(fd, buff, len);
acpi_show_data(fd, (u8 *) table, table->length);
buff[0] = '\n';
write(fd, buff, 1);
}
static void write_table(int fd, struct acpi_table_header *tbl, unsigned long addr)
{
static int select_done = 0;
if (!select_sig[0]) {
if (print) {
acpi_show_table(fd, tbl, addr);
} else {
write(fd, tbl, tbl->length);
}
} else if (!select_done && !memcmp(select_sig, tbl->signature, 4)) {
if (print) {
acpi_show_table(fd, tbl, addr);
} else {
write(fd, tbl, tbl->length);
}
select_done = 1;
}
}
static void acpi_dump_FADT(int fd, struct acpi_table_header *tbl, unsigned long xaddr) {
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