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Diffstat (limited to 'util/ifdtool/ifdtool.c')
-rw-r--r--util/ifdtool/ifdtool.c158
1 files changed, 154 insertions, 4 deletions
diff --git a/util/ifdtool/ifdtool.c b/util/ifdtool/ifdtool.c
index aa8ff73673..eb5dbc3fa0 100644
--- a/util/ifdtool/ifdtool.c
+++ b/util/ifdtool/ifdtool.c
@@ -40,6 +40,7 @@
(const char *)&(ptr)[1] <= (base) + (limit))
static int ifd_version;
+static int chipset;
static unsigned int max_regions = 0;
static int selected_chip = 0;
static int platform = -1;
@@ -56,6 +57,33 @@ static const struct region_name region_names[MAX_REGIONS] = {
{ "EC", "ec", "flashregion_8_ec.bin" },
};
+/* port from flashrom */
+static const char *const ich_chipset_names[] = {
+ "Unknown ICH",
+ "ICH",
+ "ICH2345",
+ "ICH6",
+ "SCH U",
+ "Atom E6xx",
+ "Atom S1220 S1240 S1260",
+ "ICH7",
+ "ICH8",
+ "ICH9",
+ "ICH10",
+ "5 series Ibex Peak",
+ "6 series Cougar Point",
+ "7 series Panther Point",
+ "8 series Lynx Point",
+ "Baytrail",
+ "8 series Lynx Point LP",
+ "8 series Wellsburg",
+ "9 series Wildcat Point",
+ "9 series Wildcat Point LP",
+ "100 series Sunrise Point",
+ "C620 series Lewisburg",
+ NULL
+};
+
static fdbar_t *find_fd(char *image, int size)
{
int i, found = 0;
@@ -140,6 +168,41 @@ static fmsba_t *find_fmsba(char *image, int size)
return PTR_IN_RANGE(fmsba, image, size) ? fmsba : NULL;
}
+/* port from flashrom */
+static enum ich_chipset guess_ich_chipset(const fdbar_t *fdb)
+{
+ uint32_t iccriba = (fdb->flmap2 >> 16) & 0xff;
+ uint32_t msl = (fdb->flmap2 >> 8) & 0xff;
+ uint32_t isl = (fdb->flmap1 >> 24);
+ uint32_t nm = (fdb->flmap1 >> 8) & 0x7;
+
+ if (iccriba == 0x00) {
+ if (msl == 0 && isl <= 2)
+ return CHIPSET_ICH8;
+ else if (isl <= 2)
+ return CHIPSET_ICH9;
+ else if (isl <= 10)
+ return CHIPSET_ICH10;
+ else if (isl <= 16)
+ return CHIPSET_5_SERIES_IBEX_PEAK;
+ printf("Peculiar firmware descriptor, assuming Ibex Peak compatibility.\n");
+ return CHIPSET_5_SERIES_IBEX_PEAK;
+ } else if (iccriba < 0x31 && (fdb->flmap2 & 0xff) < 0x30) {
+ if (msl == 0 && isl <= 17)
+ return CHIPSET_BAYTRAIL;
+ else if (msl <= 1 && isl <= 18)
+ return CHIPSET_6_SERIES_COUGAR_POINT;
+ else if (msl <= 1 && isl <= 21)
+ return CHIPSET_8_SERIES_LYNX_POINT;
+ printf("Peculiar firmware descriptor, assuming Wildcat Point compatibility.\n");
+ return CHIPSET_9_SERIES_WILDCAT_POINT;
+ } else if (nm == 6) {
+ return CHIPSET_C620_SERIES_LEWISBURG;
+ } else {
+ return CHIPSET_100_SERIES_SUNRISE_POINT;
+ }
+}
+
/*
* 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
@@ -171,9 +234,14 @@ static int get_ifd_version_from_fcba(char *image, int size)
{
int read_freq;
const fcba_t *fcba = find_fcba(image, size);
- if (!fcba)
+ const fdbar_t *fdb = find_fd(image, size);
+ if (!fcba) /* a valid fcba indicates a valid fdb */
exit(EXIT_FAILURE);
+ chipset = guess_ich_chipset(fdb);
+ /* TODO: port ifd_version and max_regions
+ * against guess_ich_chipset()
+ */
read_freq = (fcba->flcomp >> 17) & 7;
switch (read_freq) {
@@ -463,6 +531,19 @@ static void dump_fpsba(const fpsba_t *fpsba)
for (i = 0; i < ARRAY_SIZE(fpsba->pchstrp); i++)
printf("PCHSTRP%u:%s 0x%08x\n", i,
i < 10 ? " " : "", fpsba->pchstrp[i]);
+
+ if (ifd_version >= IFD_VERSION_2) {
+ printf("HAP bit is %sset\n",
+ fpsba->pchstrp[0] & (1 << 16) ? "" : "not ");
+ } else if (chipset >= CHIPSET_ICH8
+ && chipset <= CHIPSET_ICH10) {
+ printf("ICH_MeDisable bit is %sset\n",
+ fpsba->pchstrp[0] & 1 ? "" : "not ");
+ } else {
+ printf("AltMeDisable bit is %sset\n",
+ fpsba->pchstrp[10] & (1 << 7) ? "" : "not ");
+ }
+
printf("\n");
}
@@ -535,6 +616,13 @@ static void dump_fmsba(const fmsba_t *fmsba)
printf("Found Processor Strap Section\n");
for (i = 0; i < ARRAY_SIZE(fmsba->data); i++)
printf("????: 0x%08x\n", fmsba->data[i]);
+
+ if (chipset >= CHIPSET_ICH8 && chipset <= CHIPSET_ICH10) {
+ printf("MCH_MeDisable bit is %sset\n",
+ fmsba->data[0] & 1 ? "" : "not ");
+ printf("MCH_AltMeDisable bit is %sset\n",
+ fmsba->data[0] & (1 << 7) ? "" : "not ");
+ }
}
static void dump_jid(uint32_t jid)
@@ -633,6 +721,7 @@ static void dump_fd(char *image, int size)
if (!fdb)
exit(EXIT_FAILURE);
+ printf("ICH Revision: %s\n", ich_chipset_names[chipset]);
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);
@@ -933,6 +1022,47 @@ static void unlock_descriptor(const char *filename, char *image, int size)
write_image(filename, image, size);
}
+/* Set the AltMeDisable (or HAP for >= IFD_VERSION_2) */
+void fpsba_set_altmedisable(fpsba_t *fpsba, fmsba_t *fmsba, bool altmedisable)
+{
+ if (ifd_version >= IFD_VERSION_2) {
+ printf("%sting the HAP bit to %s Intel ME...\n",
+ altmedisable?"Set":"Unset",
+ altmedisable?"disable":"enable");
+ if (altmedisable)
+ fpsba->pchstrp[0] |= (1 << 16);
+ else
+ fpsba->pchstrp[0] &= ~(1 << 16);
+ } else {
+ if (chipset >= CHIPSET_ICH8 && chipset <= CHIPSET_ICH10) {
+ printf("%sting the ICH_MeDisable, MCH_MeDisable, "
+ "and MCH_AltMeDisable to %s Intel ME...\n",
+ altmedisable?"Set":"Unset",
+ altmedisable?"disable":"enable");
+ if (altmedisable) {
+ /* MCH_MeDisable */
+ fmsba->data[0] |= 1;
+ /* MCH_AltMeDisable */
+ fmsba->data[0] |= (1 << 7);
+ /* ICH_MeDisable */
+ fpsba->pchstrp[0] |= 1;
+ } else {
+ fmsba->data[0] &= ~1;
+ fmsba->data[0] &= ~(1 << 7);
+ fpsba->pchstrp[0] &= ~1;
+ }
+ } else {
+ printf("%sting the AltMeDisable to %s Intel ME...\n",
+ altmedisable?"Set":"Unset",
+ altmedisable?"disable":"enable");
+ if (altmedisable)
+ fpsba->pchstrp[10] |= (1 << 7);
+ else
+ fpsba->pchstrp[10] &= ~(1 << 7);
+ }
+ }
+}
+
void inject_region(const char *filename, char *image, int size,
unsigned int region_type, const char *region_fname)
{
@@ -1200,6 +1330,8 @@ static void print_usage(const char *name)
" Dual Output Fast Read Support\n"
" -l | --lock Lock firmware descriptor and ME region\n"
" -u | --unlock Unlock firmware descriptor and ME region\n"
+ " -M | --altmedisable <0|1> Set the AltMeDisable (or HAP for skylake or newer platform)\n"
+ " bit to disable ME\n"
" -p | --platform Add platform-specific quirks\n"
" aplk - Apollo Lake\n"
" cnl - Cannon Lake\n"
@@ -1217,6 +1349,7 @@ int main(int argc, char *argv[])
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;
+ int mode_altmedisable = 0, altmedisable = 0;
char *region_type_string = NULL, *region_fname = NULL;
const char *layout_fname = NULL;
int region_type = -1, inputfreq = 0;
@@ -1232,6 +1365,7 @@ int main(int argc, char *argv[])
{"spifreq", 1, NULL, 's'},
{"density", 1, NULL, 'D'},
{"chip", 1, NULL, 'C'},
+ {"altmedisable", 1, NULL, 'M'},
{"em100", 0, NULL, 'e'},
{"lock", 0, NULL, 'l'},
{"unlock", 0, NULL, 'u'},
@@ -1241,7 +1375,7 @@ int main(int argc, char *argv[])
{0, 0, 0, 0}
};
- while ((opt = getopt_long(argc, argv, "df:D:C:xi:n:s:p:eluvh?",
+ while ((opt = getopt_long(argc, argv, "df:D:C:M:xi:n:s:p:eluvh?",
long_options, &option_index)) != EOF) {
switch (opt) {
case 'd':
@@ -1345,6 +1479,15 @@ int main(int argc, char *argv[])
exit(EXIT_FAILURE);
}
break;
+ case 'M':
+ mode_altmedisable = 1;
+ altmedisable = strtol(optarg, NULL, 0);
+ if (altmedisable > 1) {
+ fprintf(stderr, "error: Illegal value\n");
+ print_usage(argv[0]);
+ exit(EXIT_FAILURE);
+ }
+ break;
case 's':
// Parse the requested SPI frequency
inputfreq = strtol(optarg, NULL, 0);
@@ -1422,7 +1565,7 @@ int main(int argc, char *argv[])
if ((mode_dump + mode_layout + mode_extract + mode_inject +
mode_newlayout + (mode_spifreq | mode_em100 | mode_unlocked |
- mode_locked)) > 1) {
+ mode_locked) + mode_altmedisable) > 1) {
fprintf(stderr, "You may not specify more than one mode.\n\n");
print_usage(argv[0]);
exit(EXIT_FAILURE);
@@ -1430,7 +1573,7 @@ int main(int argc, char *argv[])
if ((mode_dump + mode_layout + mode_extract + mode_inject +
mode_newlayout + mode_spifreq + mode_em100 + mode_locked +
- mode_unlocked + mode_density) == 0) {
+ mode_unlocked + mode_density + mode_altmedisable) == 0) {
fprintf(stderr, "You need to specify a mode.\n\n");
print_usage(argv[0]);
exit(EXIT_FAILURE);
@@ -1503,6 +1646,13 @@ int main(int argc, char *argv[])
if (mode_unlocked)
unlock_descriptor(filename, image, size);
+ if (mode_altmedisable) {
+ fpsba_t *fpsba = find_fpsba(image, size);
+ fmsba_t *fmsba = find_fmsba(image, size);
+ fpsba_set_altmedisable(fpsba, fmsba, altmedisable);
+ write_image(filename, image, size);
+ }
+
free(image);
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 03:20:11 +0000