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-rw-r--r--resources/coreboot/default/patches/0016-util-ifdtool-add-nuke-flag-all-0xFF-on-region.patch205
1 files changed, 205 insertions, 0 deletions
diff --git a/resources/coreboot/default/patches/0016-util-ifdtool-add-nuke-flag-all-0xFF-on-region.patch b/resources/coreboot/default/patches/0016-util-ifdtool-add-nuke-flag-all-0xFF-on-region.patch
new file mode 100644
index 00000000..a596d858
--- /dev/null
+++ b/resources/coreboot/default/patches/0016-util-ifdtool-add-nuke-flag-all-0xFF-on-region.patch
@@ -0,0 +1,205 @@
+From 4d78ee1f99fe49585eeb1afe6792ddfe8ddcccb1 Mon Sep 17 00:00:00 2001
+From: Leah Rowe <leah@libreboot.org>
+Date: Sun, 19 Feb 2023 18:21:43 +0000
+Subject: [PATCH 16/16] util/ifdtool: add --nuke flag (all 0xFF on region)
+
+When this option is used, the region's contents are overwritten
+with all ones (0xFF).
+
+Example:
+
+./ifdtool --nuke gbe coreboot.rom
+./ifdtool --nuke bios coreboot.com
+./ifdtool --nuke me coreboot.com
+
+Rebased since the last revision update in lbmk.
+---
+ util/ifdtool/ifdtool.c | 117 ++++++++++++++++++++++++++++++-----------
+ 1 file changed, 85 insertions(+), 32 deletions(-)
+
+diff --git a/util/ifdtool/ifdtool.c b/util/ifdtool/ifdtool.c
+index 98afa4bbcf..5509721018 100644
+--- a/util/ifdtool/ifdtool.c
++++ b/util/ifdtool/ifdtool.c
+@@ -1771,6 +1771,7 @@ static void print_usage(const char *name)
+ " wbg - Wellsburg\n"
+ " -S | --setpchstrap Write a PCH strap\n"
+ " -V | --newvalue The new value to write into PCH strap specified by -S\n"
++ " -N | --nuke <region> Overwrite the specified region with 0xFF (all ones)\n"
+ " -v | --version: print the version\n"
+ " -h | --help: print this help\n\n"
+ "<region> is one of Descriptor, BIOS, ME, GbE, Platform Data, Secondary BIOS, "
+@@ -1778,13 +1779,70 @@ static void print_usage(const char *name)
+ "\n");
+ }
+
++static int
++get_region_type_string(const char *region_type_string)
++{
++ if (region_type_string == NULL)
++ return -1;
++ else 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 Data", region_type_string))
++ region_type = 4;
++ else if (!strcasecmp("Device Exp1", region_type_string))
++ region_type = 5;
++ else if (!strcasecmp("Secondary BIOS", region_type_string))
++ region_type = 6;
++ else if (!strcasecmp("Reserved", region_type_string))
++ region_type = 7;
++ else if (!strcasecmp("EC", region_type_string))
++ region_type = 8;
++ else if (!strcasecmp("Device Exp2", region_type_string))
++ region_type = 9;
++ else if (!strcasecmp("IE", region_type_string))
++ region_type = 10;
++ else if (!strcasecmp("10GbE_0", region_type_string))
++ region_type = 11;
++ else if (!strcasecmp("10GbE_1", region_type_string))
++ region_type = 12;
++ else if (!strcasecmp("PTT", region_type_string))
++ region_type = 15;
++ else
++ return -1;
++}
++
++static void
++nuke(const char *filename, char *image, int size, int region_type)
++{
++ int i;
++ region_t region;
++ const frba_t *frba = find_frba(image, size);
++ if (!frba)
++ exit(EXIT_FAILURE);
++
++ region = get_region(frba, region_type);
++ if (region.size > 0) {
++ for (i = region.base; i <= region.limit; i++) {
++ if ((i + 1) > (size))
++ break;
++ image[i] = 0xFF;
++ }
++ write_image(filename, image, size);
++ }
++}
++
+ 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, mode_validate = 0;
+ int mode_layout = 0, mode_newlayout = 0, mode_density = 0, mode_setstrap = 0;
+- int mode_read = 0, mode_altmedisable = 0, altmedisable = 0;
++ int mode_read = 0, mode_altmedisable = 0, altmedisable = 0, mode_nuke = 0;
+ char *region_type_string = NULL, *region_fname = NULL;
+ const char *layout_fname = NULL;
+ char *new_filename = NULL;
+@@ -1815,6 +1873,7 @@ int main(int argc, char *argv[])
+ {"validate", 0, NULL, 't'},
+ {"setpchstrap", 1, NULL, 'S'},
+ {"newvalue", 1, NULL, 'V'},
++ {"nuke", 1, NULL, 'N'},
+ {0, 0, 0, 0}
+ };
+
+@@ -1855,35 +1914,8 @@ int main(int argc, char *argv[])
+ 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 Data", region_type_string))
+- region_type = 4;
+- else if (!strcasecmp("Device Exp1", region_type_string))
+- region_type = 5;
+- else if (!strcasecmp("Secondary BIOS", region_type_string))
+- region_type = 6;
+- else if (!strcasecmp("Reserved", region_type_string))
+- region_type = 7;
+- else if (!strcasecmp("EC", region_type_string))
+- region_type = 8;
+- else if (!strcasecmp("Device Exp2", region_type_string))
+- region_type = 9;
+- else if (!strcasecmp("IE", region_type_string))
+- region_type = 10;
+- else if (!strcasecmp("10GbE_0", region_type_string))
+- region_type = 11;
+- else if (!strcasecmp("10GbE_1", region_type_string))
+- region_type = 12;
+- else if (!strcasecmp("PTT", region_type_string))
+- region_type = 15;
+- if (region_type == -1) {
++ if ((region_type =
++ get_region_type_string(region_type_string)) == -1) {
+ fprintf(stderr, "No such region type: '%s'\n\n",
+ region_type_string);
+ print_usage(argv[0]);
+@@ -2050,6 +2082,22 @@ int main(int argc, char *argv[])
+ case 't':
+ mode_validate = 1;
+ break;
++ case 'N':
++ region_type_string = strdup(optarg);
++ if (!region_type_string) {
++ fprintf(stderr, "No region specified\n");
++ print_usage(argv[0]);
++ exit(EXIT_FAILURE);
++ }
++ if ((region_type =
++ get_region_type_string(region_type_string)) == -1) {
++ fprintf(stderr, "No such region type: '%s'\n\n",
++ region_type_string);
++ print_usage(argv[0]);
++ exit(EXIT_FAILURE);
++ }
++ mode_nuke = 1;
++ break;
+ case 'v':
+ print_version();
+ exit(EXIT_SUCCESS);
+@@ -2065,7 +2113,7 @@ int main(int argc, char *argv[])
+
+ if ((mode_dump + mode_layout + mode_extract + mode_inject + mode_setstrap +
+ mode_newlayout + (mode_spifreq | mode_em100 | mode_unlocked |
+- mode_locked) + mode_altmedisable + mode_validate) > 1) {
++ mode_locked) + mode_altmedisable + mode_validate + mode_nuke) > 1) {
+ fprintf(stderr, "You may not specify more than one mode.\n\n");
+ print_usage(argv[0]);
+ exit(EXIT_FAILURE);
+@@ -2073,7 +2121,8 @@ int main(int argc, char *argv[])
+
+ if ((mode_dump + mode_layout + mode_extract + mode_inject + mode_setstrap +
+ mode_newlayout + mode_spifreq + mode_em100 + mode_locked +
+- mode_unlocked + mode_density + mode_altmedisable + mode_validate) == 0) {
++ mode_unlocked + mode_density + mode_altmedisable + mode_validate +
++ mode_nuke) == 0) {
+ fprintf(stderr, "You need to specify a mode.\n\n");
+ print_usage(argv[0]);
+ exit(EXIT_FAILURE);
+@@ -2171,6 +2220,10 @@ int main(int argc, char *argv[])
+ write_image(new_filename, image, size);
+ }
+
++ if (mode_nuke) {
++ nuke(new_filename, image, size, region_type);
++ }
++
+ if (mode_altmedisable) {
+ fpsba_t *fpsba = find_fpsba(image, size);
+ fmsba_t *fmsba = find_fmsba(image, size);
+--
+2.30.2
+
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-10 07:58:36 +0000