+++ /dev/null
-/*
- * (c) Alexey Starikovskiy, Intel, 2005-2006.
- * 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 <dirent.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, skip;
-static u8 select_sig[4];
-
-static unsigned long read_efi_systab( void )
-{
- char buffer[80];
- unsigned long addr;
- FILE *f = fopen("/sys/firmware/efi/systab", "r");
- if (f) {
- while (fgets(buffer, 80, f)) {
- if (sscanf(buffer, "ACPI20=0x%lx", &addr) == 1)
- return addr;
- }
- fclose(f);
- }
- return 0;
-}
-
-static u8 *acpi_map_memory(unsigned long where, unsigned length)
-{
- unsigned long offset;
- u8 *there;
- int fd = open("/dev/mem", O_RDONLY);
- if (fd < 0) {
- fprintf(stderr, "acpi_os_map_memory: cannot open /dev/mem\n");
- exit(1);
- }
- offset = where % psz;
- 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)
-{
- unsigned size;
- 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;
- 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)
-{
- struct acpi_rsdp_descriptor *rsdp;
- 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;
- 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 len;
- int i, remain = size;
- while (remain > 0) {
- 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 (skip > 0) {
- --skip;
- return;
- }
- 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) {
- struct acpi_fadt_descriptor x;
- unsigned long addr;
- size_t len = sizeof(struct acpi_fadt_descriptor);
- if (len > tbl->length) len = tbl->length;
- memcpy(&x, tbl, len);
- x.header.length = len;
- if (checksum((u8 *)tbl, len)) {
- fprintf(stderr, "Wrong checksum for FADT!\n");
- }
- if (x.header.length >= 148 && x.Xdsdt) {
- addr = (unsigned long)x.Xdsdt;
- if (connect) {
- x.Xdsdt = lseek(fd, 0, SEEK_CUR);
- }
- } else if (x.header.length >= 44 && x.dsdt) {
- addr = (unsigned long)x.dsdt;
- if (connect) {
- x.dsdt = lseek(fd, 0, SEEK_CUR);
- }
- } else {
- fprintf(stderr, "No DSDT in FADT!\n");
- goto no_dsdt;
- }
- tbl = acpi_map_table(addr, DSDT_SIG);
- if (!tbl) goto no_dsdt;
- if (checksum((u8 *)tbl, tbl->length))
- fprintf(stderr, "Wrong checksum for DSDT!\n");
- write_table(fd, tbl, addr);
- acpi_unmap_table(tbl);
-no_dsdt:
- if (x.header.length >= 140 && x.xfirmware_ctrl) {
- addr = (unsigned long)x.xfirmware_ctrl;
- if (connect) {
- x.xfirmware_ctrl = lseek(fd, 0, SEEK_CUR);
- }
- } else if (x.header.length >= 40 && x.firmware_ctrl) {
- addr = (unsigned long)x.firmware_ctrl;
- if (connect) {
- x.firmware_ctrl = lseek(fd, 0, SEEK_CUR);
- }
- } else {
- fprintf(stderr, "No FACS in FADT!\n");
- goto no_facs;
- }
- tbl = acpi_map_table(addr, FACS_SIG);
- if (!tbl) goto no_facs;
- /* do not checksum FACS */
- write_table(fd, tbl, addr);
- acpi_unmap_table(tbl);
-no_facs:
- write_table(fd, (struct acpi_table_header *)&x, xaddr);
-}
-
-static int acpi_dump_SDT(int fd, struct acpi_rsdp_descriptor *rsdp)
-{
- struct acpi_table_header *sdt, *tbl = 0;
- int xsdt = 1, i, num;
- char *offset;
- unsigned long addr;
- if (rsdp->revision > 1 && rsdp->xsdt_physical_address) {
- tbl = acpi_map_table(rsdp->xsdt_physical_address, "XSDT");
- }
- if (!tbl && rsdp->rsdt_physical_address) {
- xsdt = 0;
- tbl = acpi_map_table(rsdp->rsdt_physical_address, "RSDT");
- }
- if (!tbl) return 0;
- sdt = malloc(tbl->length);
- memcpy(sdt, tbl, tbl->length);
- acpi_unmap_table(tbl);
- if (checksum((u8 *)sdt, sdt->length))
- fprintf(stderr, "Wrong checksum for %s!\n", (xsdt)?"XSDT":"RSDT");
- num = (sdt->length - sizeof(struct acpi_table_header))/((xsdt)?sizeof(u64):sizeof(u32));
- offset = (char *)sdt + sizeof(struct acpi_table_header);
- for (i = 0; i < num; ++i, offset += ((xsdt) ? sizeof(u64) : sizeof(u32))) {
- addr = (xsdt) ? (unsigned long)(*(u64 *)offset):
- (unsigned long)(*(u32 *)offset);
- if (!addr) continue;
- tbl = acpi_map_table(addr, 0);
- if (!tbl) continue;
- if (!memcmp(tbl->signature, FADT_SIG, 4)) {
- acpi_dump_FADT(fd, tbl, addr);
- } else {
- if (checksum((u8 *)tbl, tbl->length))
- fprintf(stderr, "Wrong checksum for generic table!\n");
- write_table(fd, tbl, addr);
- }
- acpi_unmap_table(tbl);
- if (connect) {
- if (xsdt)
- (*(u64*)offset) = lseek(fd, 0, SEEK_CUR);
- else
- (*(u32*)offset) = lseek(fd, 0, SEEK_CUR);
- }
- }
- if (xsdt) {
- addr = (unsigned long)rsdp->xsdt_physical_address;
- if (connect) {
- rsdp->xsdt_physical_address = lseek(fd, 0, SEEK_CUR);
- }
- } else {
- addr = (unsigned long)rsdp->rsdt_physical_address;
- if (connect) {
- rsdp->rsdt_physical_address = lseek(fd, 0, SEEK_CUR);
- }
- }
- write_table(fd, sdt, addr);
- free (sdt);
- return 1;
-}
-
-#define DYNAMIC_SSDT "/sys/firmware/acpi/tables/dynamic"
-
-static void acpi_dump_dynamic_SSDT(int fd)
-{
- struct stat file_stat;
- char filename[256], *ptr;
- DIR *tabledir;
- struct dirent *entry;
- FILE *fp;
- int count, readcount, length;
- struct acpi_table_header table_header, *ptable;
-
- if (stat(DYNAMIC_SSDT, &file_stat) == -1) {
- /* The directory doesn't exist */
- return;
- }
- tabledir = opendir(DYNAMIC_SSDT);
- if(!tabledir){
- /*can't open the directory */
- return;
- }
-
- while ((entry = readdir(tabledir)) != 0){
- /* skip the file of . /.. */
- if (entry->d_name[0] == '.')
- continue;
-
- sprintf(filename, "%s/%s", DYNAMIC_SSDT, entry->d_name);
- fp = fopen(filename, "r");
- if (fp == NULL) {
- fprintf(stderr, "Can't open the file of %s\n",
- filename);
- continue;
- }
- /* Read the Table header to parse the table length */
- count = fread(&table_header, 1, sizeof(struct acpi_table_header), fp);
- if (count < sizeof(table_header)) {
- /* the length is lessn than ACPI table header. skip it */
- fclose(fp);
- continue;
- }
- length = table_header.length;
- ptr = malloc(table_header.length);
- fseek(fp, 0, SEEK_SET);
- readcount = 0;
- while(!feof(fp) && readcount < length) {
- count = fread(ptr + readcount, 1, 256, fp);
- readcount += count;
- }
- fclose(fp);
- ptable = (struct acpi_table_header *) ptr;
- if (checksum((u8 *) ptable, ptable->length))
- fprintf(stderr, "Wrong checksum "
- "for dynamic SSDT table!\n");
- write_table(fd, ptable, 0);
- free(ptr);
- }
- closedir(tabledir);
- return;
-}
-
-static void usage(const char *progname)
-{
- puts("Usage:");
- printf("%s [--addr 0x1234][--table DSDT][--output filename]"
- "[--binary][--length 0x456][--help]\n", progname);
- puts("\t--addr 0x1234 or -a 0x1234 -- look for tables at this physical address");
- puts("\t--table DSDT or -t DSDT -- only dump table with DSDT signature");
- puts("\t--output filename or -o filename -- redirect output from stdin to filename");
- puts("\t--binary or -b -- dump data in binary form rather than in hex-dump format");
- puts("\t--length 0x456 or -l 0x456 -- works only with --addr, dump physical memory"
- "\n\t\tregion without trying to understand it's contents");
- puts("\t--skip 2 or -s 2 -- skip 2 tables of the given name and output only 3rd one");
- puts("\t--help or -h -- this help message");
- exit(0);
-}
-
-static struct option long_options[] = {
- {"addr", 1, 0, 0},
- {"table", 1, 0, 0},
- {"output", 1, 0, 0},
- {"binary", 0, 0, 0},
- {"length", 1, 0, 0},
- {"skip", 1, 0, 0},
- {"help", 0, 0, 0},
- {0, 0, 0, 0}
-};
-int main(int argc, char **argv)
-{
- int option_index, c, fd;
- u8 *raw;
- struct acpi_rsdp_descriptor rsdpx, *x = 0;
- char *filename = 0;
- char buff[80];
- memset(select_sig, 0, 4);
- print = 1;
- connect = 0;
- addr = length = 0;
- skip = 0;
- while (1) {
- option_index = 0;
- c = getopt_long(argc, argv, "a:t:o:bl:s:h",
- long_options, &option_index);
- if (c == -1)
- break;
-
- switch (c) {
- case 0:
- switch (option_index) {
- case 0:
- addr = strtoul(optarg, (char **)NULL, 16);
- break;
- case 1:
- memcpy(select_sig, optarg, 4);
- break;
- case 2:
- filename = optarg;
- break;
- case 3:
- print = 0;
- break;
- case 4:
- length = strtoul(optarg, (char **)NULL, 16);
- break;
- case 5:
- skip = strtoul(optarg, (char **)NULL, 10);
- break;
- case 6:
- usage(argv[0]);
- exit(0);
- }
- break;
- case 'a':
- addr = strtoul(optarg, (char **)NULL, 16);
- break;
- case 't':
- memcpy(select_sig, optarg, 4);
- break;
- case 'o':
- filename = optarg;
- break;
- case 'b':
- print = 0;
- break;
- case 'l':
- length = strtoul(optarg, (char **)NULL, 16);
- break;
- case 's':
- skip = strtoul(optarg, (char **)NULL, 10);
- break;
- case 'h':
- usage(argv[0]);
- exit(0);
- default:
- printf("Unknown option!\n");
- usage(argv[0]);
- exit(0);
- }
- }
-
- fd = STDOUT_FILENO;
- if (filename) {
- fd = creat(filename, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
- if (fd < 0)
- return fd;
- }
-
- if (!select_sig[0] && !print) {
- connect = 1;
- }
-
- psz = sysconf(_SC_PAGESIZE);
- if (length && addr) {
- /* We know length and address, it means we just want a memory dump */
- if (!(raw = acpi_map_memory(addr, length)))
- goto not_found;
- write(fd, raw, length);
- acpi_unmap_memory(raw, length);
- close(fd);
- return 0;
- }
-
- length = sizeof(struct acpi_rsdp_descriptor);
- if (!addr) {
- addr = read_efi_systab();
- if (!addr) {
- addr = ACPI_HI_RSDP_WINDOW_BASE;
- length = ACPI_HI_RSDP_WINDOW_SIZE;
- }
- }
-
- if (!(raw = acpi_map_memory(addr, length)) ||
- !(x = acpi_scan_for_rsdp(raw, length)))
- goto not_found;
-
- /* Find RSDP and print all found tables */
- memcpy(&rsdpx, x, sizeof(struct acpi_rsdp_descriptor));
- acpi_unmap_memory(raw, length);
- if (connect) {
- lseek(fd, sizeof(struct acpi_rsdp_descriptor), SEEK_SET);
- }
- if (!acpi_dump_SDT(fd, &rsdpx))
- goto not_found;
- if (connect) {
- lseek(fd, 0, SEEK_SET);
- write(fd, x, (rsdpx.revision < 2) ?
- ACPI_RSDP_CHECKSUM_LENGTH : ACPI_RSDP_XCHECKSUM_LENGTH);
- } else if (!select_sig[0] || !memcmp("RSD PTR ", select_sig, 4)) {
- addr += (long)x - (long)raw;
- length = snprintf(buff, 80, "RSD PTR @ %p\n", (void *)addr);
- write(fd, buff, length);
- acpi_show_data(fd, (u8 *) & rsdpx, (rsdpx.revision < 2) ?
- ACPI_RSDP_CHECKSUM_LENGTH : ACPI_RSDP_XCHECKSUM_LENGTH);
- buff[0] = '\n';
- write(fd, buff, 1);
- }
- acpi_dump_dynamic_SSDT(fd);
- close(fd);
- return 0;
-not_found:
- close(fd);
- fprintf(stderr, "ACPI tables were not found. If you know location "
- "of RSD PTR table (from dmesg, etc), "
- "supply it with either --addr or -a option\n");
- return 1;
-}
projects / linux-beck.git / commitdiff