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coreboot-kgpe-d16/util/ifdtool/ifdtool.c

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/*
* ifdtool - dump Intel Firmware Descriptor information
*
* Copyright (C) 2011 The ChromiumOS Authors. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <getopt.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <commonlib/helpers.h>
#include "ifdtool.h"
#ifndef O_BINARY
#define O_BINARY 0
#endif
/**
* PTR_IN_RANGE - examine whether a pointer falls in [base, base + limit)
* @param ptr: the non-void* pointer to a single arbitrary-sized object.
* @param base: base address represented with char* type.
* @param limit: upper limit of the legal address.
*
*/
#define PTR_IN_RANGE(ptr, base, limit) \
((const char *)(ptr) >= (base) && \
(const char *)&(ptr)[1] <= (base) + (limit))
static int ifd_version;
static unsigned int max_regions = 0;
static int selected_chip = 0;
static int platform = -1;
static const struct region_name region_names[MAX_REGIONS] = {
{ "Flash Descriptor", "fd", "flashregion_0_flashdescriptor.bin" },
{ "BIOS", "bios", "flashregion_1_bios.bin" },
{ "Intel ME", "me", "flashregion_2_intel_me.bin" },
{ "GbE", "gbe", "flashregion_3_gbe.bin" },
{ "Platform Data", "pd", "flashregion_4_platform_data.bin" },
{ "Reserved", "res1", "flashregion_5_reserved.bin" },
{ "Reserved", "res2", "flashregion_6_reserved.bin" },
{ "Reserved", "res3", "flashregion_7_reserved.bin" },
{ "EC", "ec", "flashregion_8_ec.bin" },
};
static fdbar_t *find_fd(char *image, int size)
{
int i, found = 0;
/* Scan for FD signature */
for (i = 0; i < (size - 4); i += 4) {
if (*(uint32_t *) (image + i) == 0x0FF0A55A) {
found = 1;
break; // signature found.
}
}
if (!found) {
printf("No Flash Descriptor found in this image\n");
return NULL;
}
fdbar_t *fdb = (fdbar_t *) (image + i);
return PTR_IN_RANGE(fdb, image, size) ? fdb : NULL;
}
static char *find_flumap(char *image, int size)
{
/* The upper map is located in the word before the 256B-long OEM section
* at the end of the 4kB-long flash descriptor. In the official
* documentation this is defined as FDBAR + 0xEFC. However, starting
* with B-Step of Ibex Peak (5 series) the signature (and thus FDBAR)
* has moved 16 bytes back to offset 0x10 of the image. Although
* official documentation still maintains the offset relative to FDBAR
* this is wrong and a simple fixed offset from the start of the image
* works.
*/
char *flumap = image + 4096 - 256 - 4;
return PTR_IN_RANGE(flumap, image, size) ? flumap : NULL;
}
static fcba_t *find_fcba(char *image, int size)
{
fdbar_t *fdb = find_fd(image, size);
if (!fdb)
return NULL;
fcba_t *fcba = (fcba_t *) (image + ((fdb->flmap0 & 0xff) << 4));
return PTR_IN_RANGE(fcba, image, size) ? fcba : NULL;
}
static fmba_t *find_fmba(char *image, int size)
{
fdbar_t *fdb = find_fd(image, size);
if (!fdb)
return NULL;
fmba_t *fmba = (fmba_t *) (image + ((fdb->flmap1 & 0xff) << 4));
return PTR_IN_RANGE(fmba, image, size) ? fmba : NULL;
}
static frba_t *find_frba(char *image, int size)
{
fdbar_t *fdb = find_fd(image, size);
if (!fdb)
return NULL;
frba_t *frba =
(frba_t *) (image + (((fdb->flmap0 >> 16) & 0xff) << 4));
return PTR_IN_RANGE(frba, image, size) ? frba : NULL;
}
static fpsba_t *find_fpsba(char *image, int size)
{
fdbar_t *fdb = find_fd(image, size);
if (!fdb)
return NULL;
fpsba_t *fpsba =
(fpsba_t *) (image + (((fdb->flmap1 >> 16) & 0xff) << 4));
return PTR_IN_RANGE(fpsba, image, size) ? fpsba : NULL;
}
static fmsba_t *find_fmsba(char *image, int size)
{
fdbar_t *fdb = find_fd(image, size);
if (!fdb)
return NULL;
fmsba_t *fmsba = (fmsba_t *) (image + ((fdb->flmap2 & 0xff) << 4));
return PTR_IN_RANGE(fmsba, image, size) ? fmsba : NULL;
}
/*
* Some newer platforms have re-defined the FCBA field that was used to
* distinguish IFD v1 v/s v2. Define a list of platforms that we know do not
* have the required FCBA field, but are IFD v2 and return true if current
* platform is one of them.
*/
static int is_platform_ifd_2(void)
{
static const int ifd_2_platforms[] = {
PLATFORM_GLK,
PLATFORM_CNL,
};
unsigned int i;
for (i = 0; i < ARRAY_SIZE(ifd_2_platforms); i++) {
if (platform == ifd_2_platforms[i])
return 1;
}
return 0;
}
/*
* There is no version field in the descriptor so to determine
* if this is a new descriptor format we check the hardcoded SPI
* read frequency to see if it is fixed at 20MHz or 17MHz.
*/
static int get_ifd_version_from_fcba(char *image, int size)
{
int read_freq;
const fcba_t *fcba = find_fcba(image, size);
if (!fcba)
exit(EXIT_FAILURE);
read_freq = (fcba->flcomp >> 17) & 7;
switch (read_freq) {
case SPI_FREQUENCY_20MHZ:
return IFD_VERSION_1;
case SPI_FREQUENCY_17MHZ:
case SPI_FREQUENCY_50MHZ_30MHZ:
return IFD_VERSION_2;
default:
fprintf(stderr, "Unknown descriptor version: %d\n",
read_freq);
exit(EXIT_FAILURE);
}
}
static void check_ifd_version(char *image, int size)
{
if (is_platform_ifd_2())
ifd_version = IFD_VERSION_2;
else
ifd_version = get_ifd_version_from_fcba(image, size);
if (ifd_version == IFD_VERSION_1)
max_regions = MAX_REGIONS_OLD;
else
max_regions = MAX_REGIONS;
}
static region_t get_region(const frba_t *frba, unsigned int region_type)
{
int base_mask;
int limit_mask;
uint32_t flreg;
region_t region;
if (ifd_version >= IFD_VERSION_2)
base_mask = 0x7fff;
else
base_mask = 0xfff;
limit_mask = base_mask << 16;
if (region_type >= max_regions) {
fprintf(stderr, "Invalid region type %d.\n", region_type);
exit (EXIT_FAILURE);
}
flreg = frba->flreg[region_type];
region.base = (flreg & base_mask) << 12;
region.limit = ((flreg & limit_mask) >> 4) | 0xfff;
region.size = region.limit - region.base + 1;
if (region.size < 0)
region.size = 0;
return region;
}
static void set_region(frba_t *frba, unsigned int region_type,
const region_t *region)
{
if (region_type >= max_regions) {
fprintf(stderr, "Invalid region type %u.\n", region_type);
exit (EXIT_FAILURE);
}
frba->flreg[region_type] =
(((region->limit >> 12) & 0x7fff) << 16) |
((region->base >> 12) & 0x7fff);
}
static const char *region_name(unsigned int region_type)
{
if (region_type >= max_regions) {
fprintf(stderr, "Invalid region type.\n");
exit (EXIT_FAILURE);
}
return region_names[region_type].pretty;
}
static const char *region_name_short(unsigned int region_type)
{
if (region_type >= max_regions) {
fprintf(stderr, "Invalid region type.\n");
exit (EXIT_FAILURE);
}
return region_names[region_type].terse;
}
static int region_num(const char *name)
{
unsigned int i;
for (i = 0; i < max_regions; i++) {
if (strcasecmp(name, region_names[i].pretty) == 0)
return i;
if (strcasecmp(name, region_names[i].terse) == 0)
return i;
}
return -1;
}
static const char *region_filename(unsigned int region_type)
{
if (region_type >= max_regions) {
fprintf(stderr, "Invalid region type %d.\n", region_type);
exit (EXIT_FAILURE);
}
return region_names[region_type].filename;
}
static void dump_region(unsigned int num, const frba_t *frba)
{
region_t region = get_region(frba, num);
printf(" Flash Region %d (%s): %08x - %08x %s\n",
num, region_name(num), region.base, region.limit,
region.size < 1 ? "(unused)" : "");
}
static void dump_region_layout(char *buf, size_t bufsize, unsigned int num,
const frba_t *frba)
{
region_t region = get_region(frba, num);
snprintf(buf, bufsize, "%08x:%08x %s\n",
region.base, region.limit, region_name_short(num));
}
static void dump_frba(const frba_t *frba)
{
unsigned int i;
printf("Found Region Section\n");
for (i = 0; i < max_regions; i++) {
printf("FLREG%u: 0x%08x\n", i, frba->flreg[i]);
dump_region(i, frba);
}
}
static void dump_frba_layout(const frba_t *frba, const char *layout_fname)
{
char buf[LAYOUT_LINELEN];
size_t bufsize = LAYOUT_LINELEN;
unsigned int i;
int layout_fd = open(layout_fname, O_WRONLY | O_CREAT | O_TRUNC,
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
if (layout_fd == -1) {
perror("Could not open file");
exit(EXIT_FAILURE);
}
for (i = 0; i < max_regions; i++) {
region_t region = get_region(frba, i);
/* is region invalid? */
if (region.size < 1)
continue;
dump_region_layout(buf, bufsize, i, frba);
if (write(layout_fd, buf, strlen(buf)) < 0) {
perror("Could not write to file");
exit(EXIT_FAILURE);
}
}
close(layout_fd);
printf("Wrote layout to %s\n", layout_fname);
}
static void decode_spi_frequency(unsigned int freq)
{
switch (freq) {
case SPI_FREQUENCY_20MHZ:
printf("20MHz");
break;
case SPI_FREQUENCY_33MHZ:
printf("33MHz");
break;
case SPI_FREQUENCY_48MHZ:
printf("48MHz");
break;
case SPI_FREQUENCY_50MHZ_30MHZ:
switch (ifd_version) {
case IFD_VERSION_1:
printf("50MHz");
break;
case IFD_VERSION_2:
printf("30MHz");
break;
}
break;
case SPI_FREQUENCY_17MHZ:
printf("17MHz");
break;
default:
printf("unknown<%x>MHz", freq);
}
}
static void decode_component_density(unsigned int density)
{
switch (density) {
case COMPONENT_DENSITY_512KB:
printf("512KB");
break;
case COMPONENT_DENSITY_1MB:
printf("1MB");
break;
case COMPONENT_DENSITY_2MB:
printf("2MB");
break;
case COMPONENT_DENSITY_4MB:
printf("4MB");
break;
case COMPONENT_DENSITY_8MB:
printf("8MB");
break;
case COMPONENT_DENSITY_16MB:
printf("16MB");
break;
case COMPONENT_DENSITY_32MB:
printf("32MB");
break;
case COMPONENT_DENSITY_64MB:
printf("64MB");
break;
case COMPONENT_DENSITY_UNUSED:
printf("UNUSED");
break;
default:
printf("unknown<%x>MB", density);
}
}
static void dump_fcba(const fcba_t *fcba)
{
printf("\nFound Component Section\n");
printf("FLCOMP 0x%08x\n", fcba->flcomp);
printf(" Dual Output Fast Read Support: %ssupported\n",
(fcba->flcomp & (1 << 30))?"":"not ");
printf(" Read ID/Read Status Clock Frequency: ");
decode_spi_frequency((fcba->flcomp >> 27) & 7);
printf("\n Write/Erase Clock Frequency: ");
decode_spi_frequency((fcba->flcomp >> 24) & 7);
printf("\n Fast Read Clock Frequency: ");
decode_spi_frequency((fcba->flcomp >> 21) & 7);
printf("\n Fast Read Support: %ssupported",
(fcba->flcomp & (1 << 20))?"":"not ");
printf("\n Read Clock Frequency: ");
decode_spi_frequency((fcba->flcomp >> 17) & 7);
switch (ifd_version) {
case IFD_VERSION_1:
printf("\n Component 2 Density: ");
decode_component_density((fcba->flcomp >> 3) & 7);
printf("\n Component 1 Density: ");
decode_component_density(fcba->flcomp & 7);
break;
case IFD_VERSION_2:
printf("\n Component 2 Density: ");
decode_component_density((fcba->flcomp >> 4) & 0xf);
printf("\n Component 1 Density: ");
decode_component_density(fcba->flcomp & 0xf);
break;
}
printf("\n");
printf("FLILL 0x%08x\n", fcba->flill);
printf(" Invalid Instruction 3: 0x%02x\n",
(fcba->flill >> 24) & 0xff);
printf(" Invalid Instruction 2: 0x%02x\n",
(fcba->flill >> 16) & 0xff);
printf(" Invalid Instruction 1: 0x%02x\n",
(fcba->flill >> 8) & 0xff);
printf(" Invalid Instruction 0: 0x%02x\n",
fcba->flill & 0xff);
printf("FLPB 0x%08x\n", fcba->flpb);
printf(" Flash Partition Boundary Address: 0x%06x\n\n",
(fcba->flpb & 0xfff) << 12);
}
static void dump_fpsba(const fpsba_t *fpsba)
{
unsigned int i;
printf("Found PCH Strap Section\n");
for (i = 0; i < ARRAY_SIZE(fpsba->pchstrp); i++)
printf("PCHSTRP%u:%s 0x%08x\n", i,
i < 10 ? " " : "", fpsba->pchstrp[i]);
printf("\n");
}
static void decode_flmstr(uint32_t flmstr)
{
int wr_shift, rd_shift;
if (ifd_version >= IFD_VERSION_2) {
wr_shift = FLMSTR_WR_SHIFT_V2;
rd_shift = FLMSTR_RD_SHIFT_V2;
} else {
wr_shift = FLMSTR_WR_SHIFT_V1;
rd_shift = FLMSTR_RD_SHIFT_V1;
}
/* EC region access only available on v2+ */
if (ifd_version >= IFD_VERSION_2)
printf(" EC Region Write Access: %s\n",
(flmstr & (1 << (wr_shift + 8))) ?
"enabled" : "disabled");
printf(" Platform Data Region Write Access: %s\n",
(flmstr & (1 << (wr_shift + 4))) ? "enabled" : "disabled");
printf(" GbE Region Write Access: %s\n",
(flmstr & (1 << (wr_shift + 3))) ? "enabled" : "disabled");
printf(" Intel ME Region Write Access: %s\n",
(flmstr & (1 << (wr_shift + 2))) ? "enabled" : "disabled");
printf(" Host CPU/BIOS Region Write Access: %s\n",
(flmstr & (1 << (wr_shift + 1))) ? "enabled" : "disabled");
printf(" Flash Descriptor Write Access: %s\n",
(flmstr & (1 << wr_shift)) ? "enabled" : "disabled");
if (ifd_version >= IFD_VERSION_2)
printf(" EC Region Read Access: %s\n",
(flmstr & (1 << (rd_shift + 8))) ?
"enabled" : "disabled");
printf(" Platform Data Region Read Access: %s\n",
(flmstr & (1 << (rd_shift + 4))) ? "enabled" : "disabled");
printf(" GbE Region Read Access: %s\n",
(flmstr & (1 << (rd_shift + 3))) ? "enabled" : "disabled");
printf(" Intel ME Region Read Access: %s\n",
(flmstr & (1 << (rd_shift + 2))) ? "enabled" : "disabled");
printf(" Host CPU/BIOS Region Read Access: %s\n",
(flmstr & (1 << (rd_shift + 1))) ? "enabled" : "disabled");
printf(" Flash Descriptor Read Access: %s\n",
(flmstr & (1 << rd_shift)) ? "enabled" : "disabled");
/* Requestor ID doesn't exist for ifd 2 */
if (ifd_version < IFD_VERSION_2)
printf(" Requester ID: 0x%04x\n\n",
flmstr & 0xffff);
}
static void dump_fmba(const fmba_t *fmba)
{
printf("Found Master Section\n");
printf("FLMSTR1: 0x%08x (Host CPU/BIOS)\n", fmba->flmstr1);
decode_flmstr(fmba->flmstr1);
printf("FLMSTR2: 0x%08x (Intel ME)\n", fmba->flmstr2);
decode_flmstr(fmba->flmstr2);
printf("FLMSTR3: 0x%08x (GbE)\n", fmba->flmstr3);
decode_flmstr(fmba->flmstr3);
if (ifd_version >= IFD_VERSION_2) {
printf("FLMSTR5: 0x%08x (EC)\n", fmba->flmstr5);
decode_flmstr(fmba->flmstr5);
}
}
static void dump_fmsba(const fmsba_t *fmsba)
{
unsigned int i;
printf("Found Processor Strap Section\n");
for (i = 0; i < ARRAY_SIZE(fmsba->data); i++)
printf("????: 0x%08x\n", fmsba->data[i]);
}
static void dump_jid(uint32_t jid)
{
printf(" SPI Componend Vendor ID: 0x%02x\n",
jid & 0xff);
printf(" SPI Componend Device ID 0: 0x%02x\n",
(jid >> 8) & 0xff);
printf(" SPI Componend Device ID 1: 0x%02x\n",
(jid >> 16) & 0xff);
}
static void dump_vscc(uint32_t vscc)
{
printf(" Lower Erase Opcode: 0x%02x\n",
vscc >> 24);
printf(" Lower Write Enable on Write Status: 0x%02x\n",
vscc & (1 << 20) ? 0x06 : 0x50);
printf(" Lower Write Status Required: %s\n",
vscc & (1 << 19) ? "Yes" : "No");
printf(" Lower Write Granularity: %d bytes\n",
vscc & (1 << 18) ? 64 : 1);
printf(" Lower Block / Sector Erase Size: ");
switch ((vscc >> 16) & 0x3) {
case 0:
printf("256 Byte\n");
break;
case 1:
printf("4KB\n");
break;
case 2:
printf("8KB\n");
break;
case 3:
printf("64KB\n");
break;
}
printf(" Upper Erase Opcode: 0x%02x\n",
(vscc >> 8) & 0xff);
printf(" Upper Write Enable on Write Status: 0x%02x\n",
vscc & (1 << 4) ? 0x06 : 0x50);
printf(" Upper Write Status Required: %s\n",
vscc & (1 << 3) ? "Yes" : "No");
printf(" Upper Write Granularity: %d bytes\n",
vscc & (1 << 2) ? 64 : 1);
printf(" Upper Block / Sector Erase Size: ");
switch (vscc & 0x3) {
case 0:
printf("256 Byte\n");
break;
case 1:
printf("4KB\n");
break;
case 2:
printf("8KB\n");
break;
case 3:
printf("64KB\n");
break;
}
}
static void dump_vtba(const vtba_t *vtba, int vtl)
{
int i;
int max_len = sizeof(vtba_t)/sizeof(vscc_t);
int num = (vtl >> 1) < max_len ? (vtl >> 1) : max_len;
printf("ME VSCC table:\n");
for (i = 0; i < num; i++) {
printf(" JID%d: 0x%08x\n", i, vtba->entry[i].jid);
dump_jid(vtba->entry[i].jid);
printf(" VSCC%d: 0x%08x\n", i, vtba->entry[i].vscc);
dump_vscc(vtba->entry[i].vscc);
}
printf("\n");
}
static void dump_oem(const uint8_t *oem)
{
int i, j;
printf("OEM Section:\n");
for (i = 0; i < 4; i++) {
printf("%02x:", i << 4);
for (j = 0; j < 16; j++)
printf(" %02x", oem[(i<<4)+j]);
printf ("\n");
}
printf ("\n");
}
static void dump_fd(char *image, int size)
{
const fdbar_t *fdb = find_fd(image, size);
if (!fdb)
exit(EXIT_FAILURE);
printf("FLMAP0: 0x%08x\n", fdb->flmap0);
printf(" NR: %d\n", (fdb->flmap0 >> 24) & 7);
printf(" FRBA: 0x%x\n", ((fdb->flmap0 >> 16) & 0xff) << 4);
printf(" NC: %d\n", ((fdb->flmap0 >> 8) & 3) + 1);
printf(" FCBA: 0x%x\n", ((fdb->flmap0) & 0xff) << 4);
printf("FLMAP1: 0x%08x\n", fdb->flmap1);
printf(" ISL: 0x%02x\n", (fdb->flmap1 >> 24) & 0xff);
printf(" FPSBA: 0x%x\n", ((fdb->flmap1 >> 16) & 0xff) << 4);
printf(" NM: %d\n", (fdb->flmap1 >> 8) & 3);
printf(" FMBA: 0x%x\n", ((fdb->flmap1) & 0xff) << 4);
printf("FLMAP2: 0x%08x\n", fdb->flmap2);
printf(" PSL: 0x%04x\n", (fdb->flmap2 >> 8) & 0xffff);
printf(" FMSBA: 0x%x\n", ((fdb->flmap2) & 0xff) << 4);
char *flumap = find_flumap(image, size);
uint32_t flumap1 = *(uint32_t *)flumap;
printf("FLUMAP1: 0x%08x\n", flumap1);
printf(" Intel ME VSCC Table Length (VTL): %d\n",
(flumap1 >> 8) & 0xff);
printf(" Intel ME VSCC Table Base Address (VTBA): 0x%06x\n\n",
(flumap1 & 0xff) << 4);
dump_vtba((vtba_t *)
(image + ((flumap1 & 0xff) << 4)),
(flumap1 >> 8) & 0xff);
dump_oem((const uint8_t *)image + 0xf00);
const frba_t *frba = find_frba(image, size);
const fcba_t *fcba = find_fcba(image, size);
const fpsba_t *fpsba = find_fpsba(image, size);
const fmba_t *fmba = find_fmba(image, size);
const fmsba_t *fmsba = find_fmsba(image, size);
if (frba && fcba && fpsba && fmba && fmsba) {
dump_frba(frba);
dump_fcba(fcba);
dump_fpsba(fpsba);
dump_fmba(fmba);
dump_fmsba(fmsba);
} else {
printf("FD is corrupted!\n");
}
}
static void dump_layout(char *image, int size, const char *layout_fname)
{
const frba_t *frba = find_frba(image, size);
if (!frba)
exit(EXIT_FAILURE);
dump_frba_layout(frba, layout_fname);
}
static void write_regions(char *image, int size)
{
unsigned int i;
const frba_t *frba = find_frba(image, size);
if (!frba)
exit(EXIT_FAILURE);
for (i = 0; i < max_regions; i++) {
region_t region = get_region(frba, i);
dump_region(i, frba);
if (region.size > 0) {
int region_fd;
region_fd = open(region_filename(i),
O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
if (region_fd < 0) {
perror("Error while trying to open file");
exit(EXIT_FAILURE);
}
if (write(region_fd, image + region.base, region.size) != region.size)
perror("Error while writing");
close(region_fd);
}
}
}
static void write_image(const char *filename, char *image, int size)
{
char new_filename[FILENAME_MAX]; // allow long file names
int new_fd;
// - 5: leave room for ".new\0"
strncpy(new_filename, filename, FILENAME_MAX - 5);
strncat(new_filename, ".new", FILENAME_MAX - strlen(filename));
printf("Writing new image to %s\n", new_filename);
// Now write out new image
new_fd = open(new_filename,
O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
if (new_fd < 0) {
perror("Error while trying to open file");
exit(EXIT_FAILURE);
}
if (write(new_fd, image, size) != size)
perror("Error while writing");
close(new_fd);
}
static void set_spi_frequency(const char *filename, char *image, int size,
enum spi_frequency freq)
{
fcba_t *fcba = find_fcba(image, size);
if (!fcba)
exit(EXIT_FAILURE);
/* clear bits 21-29 */
fcba->flcomp &= ~0x3fe00000;
/* Read ID and Read Status Clock Frequency */
fcba->flcomp |= freq << 27;
/* Write and Erase Clock Frequency */
fcba->flcomp |= freq << 24;
/* Fast Read Clock Frequency */
fcba->flcomp |= freq << 21;
write_image(filename, image, size);
}
static void set_em100_mode(const char *filename, char *image, int size)
{
fcba_t *fcba = find_fcba(image, size);
if (!fcba)
exit(EXIT_FAILURE);
int freq;
switch (ifd_version) {
case IFD_VERSION_1:
freq = SPI_FREQUENCY_20MHZ;
break;
case IFD_VERSION_2:
freq = SPI_FREQUENCY_17MHZ;
break;
default:
freq = SPI_FREQUENCY_17MHZ;
break;
}
fcba->flcomp &= ~(1 << 30);
set_spi_frequency(filename, image, size, freq);
}
static void set_chipdensity(const char *filename, char *image, int size,
unsigned int density)
{
fcba_t *fcba = find_fcba(image, size);
if (!fcba)
exit(EXIT_FAILURE);
printf("Setting chip density to ");
decode_component_density(density);
printf("\n");
switch (ifd_version) {
case IFD_VERSION_1:
/* fail if selected density is not supported by this version */
if ( (density == COMPONENT_DENSITY_32MB) ||
(density == COMPONENT_DENSITY_64MB) ||
(density == COMPONENT_DENSITY_UNUSED) ) {
printf("error: Selected density not supported in IFD version 1.\n");
exit(EXIT_FAILURE);
}
break;
case IFD_VERSION_2:
/* I do not have a version 2 IFD nor do i have the docs. */
printf("error: Changing the chip density for IFD version 2 has not been"
" implemented yet.\n");
exit(EXIT_FAILURE);
default:
printf("error: Unknown IFD version\n");
exit(EXIT_FAILURE);
break;
}
/* clear chip density for corresponding chip */
switch (selected_chip) {
case 1:
fcba->flcomp &= ~(0x7);
break;
case 2:
fcba->flcomp &= ~(0x7 << 3);
break;
default: /*both chips*/
fcba->flcomp &= ~(0x3F);
break;
}
/* set the new density */
if (selected_chip == 1 || selected_chip == 0)
fcba->flcomp |= (density); /* first chip */
if (selected_chip == 2 || selected_chip == 0)
fcba->flcomp |= (density << 3); /* second chip */
write_image(filename, image, size);
}
static void lock_descriptor(const char *filename, char *image, int size)
{
int wr_shift, rd_shift;
fmba_t *fmba = find_fmba(image, size);
if (!fmba)
exit(EXIT_FAILURE);
/* TODO: Dynamically take Platform Data Region and GbE Region
* into regard.
*/
if (ifd_version >= IFD_VERSION_2) {
wr_shift = FLMSTR_WR_SHIFT_V2;
rd_shift = FLMSTR_RD_SHIFT_V2;
/* Clear non-reserved bits */
fmba->flmstr1 &= 0xff;
fmba->flmstr2 &= 0xff;
fmba->flmstr3 &= 0xff;
} else {
wr_shift = FLMSTR_WR_SHIFT_V1;
rd_shift = FLMSTR_RD_SHIFT_V1;
fmba->flmstr1 = 0;
fmba->flmstr2 = 0;
/* Requestor ID */
fmba->flmstr3 = 0x118;
}
switch (platform) {
case PLATFORM_APL:
case PLATFORM_GLK:
/* CPU/BIOS can read descriptor and BIOS */
fmba->flmstr1 |= 0x3 << rd_shift;
/* CPU/BIOS can write BIOS */
fmba->flmstr1 |= 0x2 << wr_shift;
/* TXE can read descriptor, BIOS and Device Expansion */
fmba->flmstr2 |= 0x23 << rd_shift;
/* TXE can only write Device Expansion */
fmba->flmstr2 |= 0x20 << wr_shift;
break;
case PLATFORM_SKLKBL:
/* CPU/BIOS can read descriptor, BIOS and GbE. */
fmba->flmstr1 |= 0xb << rd_shift;
/* CPU/BIOS can write BIOS and Gbe. */
fmba->flmstr1 |= 0xa << wr_shift;
/* ME can read descriptor, ME and GbE. */
fmba->flmstr2 |= 0xd << rd_shift;
/* ME can write ME. */
fmba->flmstr2 |= 0x4 << wr_shift;
/* GbE can read GbE and descriptor. */
fmba->flmstr3 |= 0x9 << rd_shift;
/* GbE can write GbE. */
fmba->flmstr3 |= 0x8 << wr_shift;
/* EC can read EC and descriptor. */
fmba->flmstr5 |= 0x101 << rd_shift;
/* EC can write EC region. */
fmba->flmstr5 |= 0x100 << wr_shift;
break;
default:
/* CPU/BIOS can read descriptor, BIOS, and GbE. */
fmba->flmstr1 |= 0xb << rd_shift;
/* CPU/BIOS can write BIOS and GbE. */
fmba->flmstr1 |= 0xa << wr_shift;
/* ME can read descriptor, ME, and GbE. */
fmba->flmstr2 |= 0xd << rd_shift;
/* ME can write ME and GbE. */
fmba->flmstr2 |= 0xc << wr_shift;
/* GbE can write only GbE. */
fmba->flmstr3 |= 0x8 << rd_shift;
/* GbE can read only GbE. */
fmba->flmstr3 |= 0x8 << wr_shift;
break;
}
write_image(filename, image, size);
}
static void unlock_descriptor(const char *filename, char *image, int size)
{
fmba_t *fmba = find_fmba(image, size);
if (!fmba)
exit(EXIT_FAILURE);
if (ifd_version >= IFD_VERSION_2) {
/* Access bits for each region are read: 19:8 write: 31:20 */
fmba->flmstr1 = 0xffffff00 | (fmba->flmstr1 & 0xff);
fmba->flmstr2 = 0xffffff00 | (fmba->flmstr2 & 0xff);
fmba->flmstr3 = 0xffffff00 | (fmba->flmstr3 & 0xff);
} else {
fmba->flmstr1 = 0xffff0000;
fmba->flmstr2 = 0xffff0000;
/* Keep chipset specific Requester ID */
fmba->flmstr3 = 0x08080000 | (fmba->flmstr3 & 0xffff);
}
write_image(filename, image, size);
}
void inject_region(const char *filename, char *image, int size,
unsigned int region_type, const char *region_fname)
{
frba_t *frba = find_frba(image, size);
if (!frba)
exit(EXIT_FAILURE);
region_t region = get_region(frba, region_type);
if (region.size <= 0xfff) {
fprintf(stderr, "Region %s is disabled in target. Not injecting.\n",
region_name(region_type));
exit(EXIT_FAILURE);
}
int region_fd = open(region_fname, O_RDONLY | O_BINARY);
if (region_fd == -1) {
perror("Could not open file");
exit(EXIT_FAILURE);
}
struct stat buf;
if (fstat(region_fd, &buf) == -1) {
perror("Could not stat file");
exit(EXIT_FAILURE);
}
int region_size = buf.st_size;
printf("File %s is %d bytes\n", region_fname, region_size);
if ( (region_size > region.size) || ((region_type != 1) &&
(region_size > region.size))) {
fprintf(stderr, "Region %s is %d(0x%x) bytes. File is %d(0x%x)"
" bytes. Not injecting.\n",
region_name(region_type), region.size,
region.size, region_size, region_size);
exit(EXIT_FAILURE);
}
int offset = 0;
if ((region_type == 1) && (region_size < region.size)) {
fprintf(stderr, "Region %s is %d(0x%x) bytes. File is %d(0x%x)"
" bytes. Padding before injecting.\n",
region_name(region_type), region.size,
region.size, region_size, region_size);
offset = region.size - region_size;
memset(image + region.base, 0xff, offset);
}
if (size < region.base + offset + region_size) {
fprintf(stderr, "Output file is too small. (%d < %d)\n",
size, region.base + offset + region_size);
exit(EXIT_FAILURE);
}
if (read(region_fd, image + region.base + offset, region_size)
!= region_size) {
perror("Could not read file");
exit(EXIT_FAILURE);
}
close(region_fd);
printf("Adding %s as the %s section of %s\n",
region_fname, region_name(region_type), filename);
write_image(filename, image, size);
}
unsigned int next_pow2(unsigned int x)
{
unsigned int y = 1;
if (x == 0)
return 0;
while (y <= x)
y = y << 1;
return y;
}
/**
* Determine if two memory regions overlap.
*
* @param r1, r2 Memory regions to compare.
* @return 0 if the two regions are seperate
* @return 1 if the two regions overlap
*/
static int regions_collide(const region_t *r1, const region_t *r2)
{
if ((r1->size == 0) || (r2->size == 0))
return 0;
if ( ((r1->base >= r2->base) && (r1->base <= r2->limit)) ||
((r1->limit >= r2->base) && (r1->limit <= r2->limit)) )
return 1;
return 0;
}
void new_layout(const char *filename, char *image, int size,
const char *layout_fname)
{
FILE *romlayout;
char tempstr[256];
char layout_region_name[256];
unsigned int i, j;
int region_number;
region_t current_regions[MAX_REGIONS];
region_t new_regions[MAX_REGIONS];
int new_extent = 0;
char *new_image;
/* load current descriptor map and regions */
frba_t *frba = find_frba(image, size);
if (!frba)
exit(EXIT_FAILURE);
for (i = 0; i < max_regions; i++) {
current_regions[i] = get_region(frba, i);
new_regions[i] = get_region(frba, i);
}
/* read new layout */
romlayout = fopen(layout_fname, "r");
if (!romlayout) {
perror("Could not read layout file.\n");
exit(EXIT_FAILURE);
}
while (!feof(romlayout)) {
char *tstr1, *tstr2;
if (2 != fscanf(romlayout, "%255s %255s\n", tempstr,
layout_region_name))
continue;
region_number = region_num(layout_region_name);
if (region_number < 0)
continue;
tstr1 = strtok(tempstr, ":");
tstr2 = strtok(NULL, ":");
if (!tstr1 || !tstr2) {
fprintf(stderr, "Could not parse layout file.\n");
exit(EXIT_FAILURE);
}
new_regions[region_number].base = strtol(tstr1,
(char **)NULL, 16);
new_regions[region_number].limit = strtol(tstr2,
(char **)NULL, 16);
new_regions[region_number].size =
new_regions[region_number].limit -
new_regions[region_number].base + 1;
if (new_regions[region_number].size < 0)
new_regions[region_number].size = 0;
}
fclose(romlayout);
/* check new layout */
for (i = 0; i < max_regions; i++) {
if (new_regions[i].size == 0)
continue;
if (new_regions[i].size < current_regions[i].size) {
printf("DANGER: Region %s is shrinking.\n",
region_name(i));
printf(" The region will be truncated to fit.\n");
printf(" This may result in an unusable image.\n");
}
for (j = i + 1; j < max_regions; j++) {
if (regions_collide(&new_regions[i], &new_regions[j])) {
fprintf(stderr, "Regions would overlap.\n");
exit(EXIT_FAILURE);
}
}
/* detect if the image size should grow */
if (new_extent < new_regions[i].limit)
new_extent = new_regions[i].limit;
}
new_extent = next_pow2(new_extent - 1);
if (new_extent != size) {
printf("The image has changed in size.\n");
printf("The old image is %d bytes.\n", size);
printf("The new image is %d bytes.\n", new_extent);
}
/* copy regions to a new image */
new_image = malloc(new_extent);
memset(new_image, 0xff, new_extent);
for (i = 0; i < max_regions; i++) {
int copy_size = new_regions[i].size;
int offset_current = 0, offset_new = 0;
const region_t *current = &current_regions[i];
const region_t *new = &new_regions[i];
if (new->size == 0)
continue;
if (new->size > current->size) {
/* copy from the end of the current region */
copy_size = current->size;
offset_new = new->size - current->size;
}
if (new->size < current->size) {
/* copy to the end of the new region */
offset_current = current->size - new->size;
}
printf("Copy Descriptor %d (%s) (%d bytes)\n", i,
region_name(i), copy_size);
printf(" from %08x+%08x:%08x (%10d)\n", current->base,
offset_current, current->limit, current->size);
printf(" to %08x+%08x:%08x (%10d)\n", new->base,
offset_new, new->limit, new->size);
memcpy(new_image + new->base + offset_new,
image + current->base + offset_current,
copy_size);
}
/* update new descriptor regions */
frba = find_frba(new_image, new_extent);
if (!frba)
exit(EXIT_FAILURE);
for (i = 1; i < max_regions; i++)
set_region(frba, i, &new_regions[i]);
write_image(filename, new_image, new_extent);
free(new_image);
}
static void print_version(void)
{
printf("ifdtool v%s -- ", IFDTOOL_VERSION);
printf("Copyright (C) 2011 Google Inc.\n\n");
printf
("This program is free software: you can redistribute it and/or modify\n"
"it under the terms of the GNU General Public License as published by\n"
"the Free Software Foundation, version 2 of the License.\n\n"
"This program is distributed in the hope that it will be useful,\n"
"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
"GNU General Public License for more details.\n\n");
}
static void print_usage(const char *name)
{
printf("usage: %s [-vhdix?] <filename>\n", name);
printf("\n"
" -d | --dump: dump intel firmware descriptor\n"
" -f | --layout <filename> dump regions into a flashrom layout file\n"
" -x | --extract: extract intel fd modules\n"
" -i | --inject <region>:<module> inject file <module> into region <region>\n"
" -n | --newlayout <filename> update regions using a flashrom layout file\n"
" -s | --spifreq <17|20|30|33|48|50> set the SPI frequency\n"
" -D | --density <512|1|2|4|8|16> set chip density (512 in KByte, others in MByte)\n"
" -C | --chip <0|1|2> select spi chip on which to operate\n"
" can only be used once per run:\n"
" 0 - both chips (default), 1 - first chip, 2 - second chip\n"
" -e | --em100 set SPI frequency to 20MHz and disable\n"
" Dual Output Fast Read Support\n"
" -l | --lock Lock firmware descriptor and ME region\n"
" -u | --unlock Unlock firmware descriptor and ME region\n"
" -p | --platform Add platform-specific quirks\n"
" aplk - Apollo Lake\n"
" cnl - Cannon Lake\n"
" glk - Gemini Lake\n"
" sklkbl - Skylake/Kaby Lake\n"
" -v | --version: print the version\n"
" -h | --help: print this help\n\n"
"<region> is one of Descriptor, BIOS, ME, GbE, Platform\n"
"\n");
}
int main(int argc, char *argv[])
{
int opt, option_index = 0;
int mode_dump = 0, mode_extract = 0, mode_inject = 0, mode_spifreq = 0;
int mode_em100 = 0, mode_locked = 0, mode_unlocked = 0;
int mode_layout = 0, mode_newlayout = 0, mode_density = 0;
char *region_type_string = NULL, *region_fname = NULL;
const char *layout_fname = NULL;
int region_type = -1, inputfreq = 0;
unsigned int new_density = 0;
enum spi_frequency spifreq = SPI_FREQUENCY_20MHZ;
static const struct option long_options[] = {
{"dump", 0, NULL, 'd'},
{"layout", 1, NULL, 'f'},
{"extract", 0, NULL, 'x'},
{"inject", 1, NULL, 'i'},
{"newlayout", 1, NULL, 'n'},
{"spifreq", 1, NULL, 's'},
{"density", 1, NULL, 'D'},
{"chip", 1, NULL, 'C'},
{"em100", 0, NULL, 'e'},
{"lock", 0, NULL, 'l'},
{"unlock", 0, NULL, 'u'},
{"version", 0, NULL, 'v'},
{"help", 0, NULL, 'h'},
{"platform", 0, NULL, 'p'},
{0, 0, 0, 0}
};
while ((opt = getopt_long(argc, argv, "df:D:C:xi:n:s:p:eluvh?",
long_options, &option_index)) != EOF) {
switch (opt) {
case 'd':
mode_dump = 1;
break;
case 'f':
mode_layout = 1;
layout_fname = strdup(optarg);
if (!layout_fname) {
fprintf(stderr, "No layout file specified\n");
print_usage(argv[0]);
exit(EXIT_FAILURE);
}
break;
case 'x':
mode_extract = 1;
break;
case 'i':
// separate type and file name
region_type_string = strdup(optarg);
region_fname = strchr(region_type_string, ':');
if (!region_fname) {
print_usage(argv[0]);
exit(EXIT_FAILURE);
}
region_fname[0] = '\0';
region_fname++;
// Descriptor, BIOS, ME, GbE, Platform
// valid type?
if (!strcasecmp("Descriptor", region_type_string))
region_type = 0;
else if (!strcasecmp("BIOS", region_type_string))
region_type = 1;
else if (!strcasecmp("ME", region_type_string))
region_type = 2;
else if (!strcasecmp("GbE", region_type_string))
region_type = 3;
else if (!strcasecmp("Platform", region_type_string))
region_type = 4;
else if (!strcasecmp("EC", region_type_string))
region_type = 8;
if (region_type == -1) {
fprintf(stderr, "No such region type: '%s'\n\n",
region_type_string);
print_usage(argv[0]);
exit(EXIT_FAILURE);
}
mode_inject = 1;
break;
case 'n':
mode_newlayout = 1;
layout_fname = strdup(optarg);
if (!layout_fname) {
fprintf(stderr, "No layout file specified\n");
print_usage(argv[0]);
exit(EXIT_FAILURE);
}
break;
case 'D':
mode_density = 1;
new_density = strtoul(optarg, NULL, 0);
switch (new_density) {
case 512:
new_density = COMPONENT_DENSITY_512KB;
break;
case 1:
new_density = COMPONENT_DENSITY_1MB;
break;
case 2:
new_density = COMPONENT_DENSITY_2MB;
break;
case 4:
new_density = COMPONENT_DENSITY_4MB;
break;
case 8:
new_density = COMPONENT_DENSITY_8MB;
break;
case 16:
new_density = COMPONENT_DENSITY_16MB;
break;
case 32:
new_density = COMPONENT_DENSITY_32MB;
break;
case 64:
new_density = COMPONENT_DENSITY_64MB;
break;
case 0:
new_density = COMPONENT_DENSITY_UNUSED;
break;
default:
printf("error: Unknown density\n");
print_usage(argv[0]);
exit(EXIT_FAILURE);
}
break;
case 'C':
selected_chip = strtol(optarg, NULL, 0);
if (selected_chip > 2) {
fprintf(stderr, "error: Invalid chip selection\n");
print_usage(argv[0]);
exit(EXIT_FAILURE);
}
break;
case 's':
// Parse the requested SPI frequency
inputfreq = strtol(optarg, NULL, 0);
switch (inputfreq) {
case 17:
spifreq = SPI_FREQUENCY_17MHZ;
break;
case 20:
spifreq = SPI_FREQUENCY_20MHZ;
break;
case 30:
spifreq = SPI_FREQUENCY_50MHZ_30MHZ;
break;
case 33:
spifreq = SPI_FREQUENCY_33MHZ;
break;
case 48:
spifreq = SPI_FREQUENCY_48MHZ;
break;
case 50:
spifreq = SPI_FREQUENCY_50MHZ_30MHZ;
break;
default:
fprintf(stderr, "Invalid SPI Frequency: %d\n",
inputfreq);
print_usage(argv[0]);
exit(EXIT_FAILURE);
}
mode_spifreq = 1;
break;
case 'e':
mode_em100 = 1;
break;
case 'l':
mode_locked = 1;
if (mode_unlocked == 1) {
fprintf(stderr, "Locking/Unlocking FD and ME are mutually exclusive\n");
exit(EXIT_FAILURE);
}
break;
case 'u':
mode_unlocked = 1;
if (mode_locked == 1) {
fprintf(stderr, "Locking/Unlocking FD and ME are mutually exclusive\n");
exit(EXIT_FAILURE);
}
break;
case 'p':
if (!strcmp(optarg, "aplk")) {
platform = PLATFORM_APL;
} else if (!strcmp(optarg, "cnl")) {
platform = PLATFORM_CNL;
} else if (!strcmp(optarg, "glk")) {
platform = PLATFORM_GLK;
} else if (!strcmp(optarg, "sklkbl")) {
platform = PLATFORM_SKLKBL;
} else {
fprintf(stderr, "Unknown platform: %s\n", optarg);
exit(EXIT_FAILURE);
}
fprintf(stderr, "Platform is: %s\n", optarg);
break;
case 'v':
print_version();
exit(EXIT_SUCCESS);
break;
case 'h':
case '?':
default:
print_usage(argv[0]);
exit(EXIT_SUCCESS);
break;
}
}
if ((mode_dump + mode_layout + mode_extract + mode_inject +
mode_newlayout + (mode_spifreq | mode_em100 | mode_unlocked |
mode_locked)) > 1) {
fprintf(stderr, "You may not specify more than one mode.\n\n");
print_usage(argv[0]);
exit(EXIT_FAILURE);
}
if ((mode_dump + mode_layout + mode_extract + mode_inject +
mode_newlayout + mode_spifreq + mode_em100 + mode_locked +
mode_unlocked + mode_density) == 0) {
fprintf(stderr, "You need to specify a mode.\n\n");
print_usage(argv[0]);
exit(EXIT_FAILURE);
}
if (optind + 1 != argc) {
fprintf(stderr, "You need to specify a file.\n\n");
print_usage(argv[0]);
exit(EXIT_FAILURE);
}
char *filename = argv[optind];
int bios_fd = open(filename, O_RDONLY | O_BINARY);
if (bios_fd == -1) {
perror("Could not open file");
exit(EXIT_FAILURE);
}
struct stat buf;
if (fstat(bios_fd, &buf) == -1) {
perror("Could not stat file");
exit(EXIT_FAILURE);
}
int size = buf.st_size;
printf("File %s is %d bytes\n", filename, size);
char *image = malloc(size);
if (!image) {
printf("Out of memory.\n");
exit(EXIT_FAILURE);
}
if (read(bios_fd, image, size) != size) {
perror("Could not read file");
exit(EXIT_FAILURE);
}
close(bios_fd);
check_ifd_version(image, size);
if (mode_dump)
dump_fd(image, size);
if (mode_layout)
dump_layout(image, size, layout_fname);
if (mode_extract)
write_regions(image, size);
if (mode_inject)
inject_region(filename, image, size, region_type,
region_fname);
if (mode_newlayout)
new_layout(filename, image, size, layout_fname);
if (mode_spifreq)
set_spi_frequency(filename, image, size, spifreq);
if (mode_density)
set_chipdensity(filename, image, size, new_density);
if (mode_em100)
set_em100_mode(filename, image, size);
if (mode_locked)
lock_descriptor(filename, image, size);
if (mode_unlocked)
unlock_descriptor(filename, image, size);
free(image);
return 0;
}
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