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-rw-r--r--config/coreboot/next/patches/0005-util-ifdtool-add-nuke-flag-all-0xFF-on-region.patch205
1 files changed, 205 insertions, 0 deletions
diff --git a/config/coreboot/next/patches/0005-util-ifdtool-add-nuke-flag-all-0xFF-on-region.patch b/config/coreboot/next/patches/0005-util-ifdtool-add-nuke-flag-all-0xFF-on-region.patch
new file mode 100644
index 00000000..d623f57f
--- /dev/null
+++ b/config/coreboot/next/patches/0005-util-ifdtool-add-nuke-flag-all-0xFF-on-region.patch
@@ -0,0 +1,205 @@
+From 13da22a18b2c13b8676c69e929ba51f2d5d188cf Mon Sep 17 00:00:00 2001
+From: Leah Rowe <info@minifree.org>
+Date: Sun, 19 Feb 2023 18:21:43 +0000
+Subject: [PATCH 5/9] 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.
+
+Signed-off-by: Leah Rowe <leah@libreboot.org>
+---
+ util/ifdtool/ifdtool.c | 114 ++++++++++++++++++++++++++++++-----------
+ 1 file changed, 83 insertions(+), 31 deletions(-)
+
+diff --git a/util/ifdtool/ifdtool.c b/util/ifdtool/ifdtool.c
+index ace05e2265..ba292fd142 100644
+--- a/util/ifdtool/ifdtool.c
++++ b/util/ifdtool/ifdtool.c
+@@ -2230,6 +2230,7 @@ static void print_usage(const char *name)
+ " tgl - Tiger Lake\n"
+ " wbg - Wellsburg\n"
+ " -S | --setpchstrap Write a PCH strap\n"
++ " -N | --nuke <region> Overwrite the specified region with 0xFF (all ones)\n"
+ " -V | --newvalue The new value to write into PCH strap specified by -S\n"
+ " -v | --version: print the version\n"
+ " -h | --help: print this help\n\n"
+@@ -2238,6 +2239,60 @@ static void print_usage(const char *name)
+ "\n");
+ }
+
++static int
++get_region_type_string(const char *region_type_string)
++{
++ if (!strcasecmp("Descriptor", region_type_string))
++ return 0;
++ else if (!strcasecmp("BIOS", region_type_string))
++ return 1;
++ else if (!strcasecmp("ME", region_type_string))
++ return 2;
++ else if (!strcasecmp("GbE", region_type_string))
++ return 3;
++ else if (!strcasecmp("Platform Data", region_type_string))
++ return 4;
++ else if (!strcasecmp("Device Exp1", region_type_string))
++ return 5;
++ else if (!strcasecmp("Secondary BIOS", region_type_string))
++ return 6;
++ else if (!strcasecmp("Reserved", region_type_string))
++ return 7;
++ else if (!strcasecmp("EC", region_type_string))
++ return 8;
++ else if (!strcasecmp("Device Exp2", region_type_string))
++ return 9;
++ else if (!strcasecmp("IE", region_type_string))
++ return 10;
++ else if (!strcasecmp("10GbE_0", region_type_string))
++ return 11;
++ else if (!strcasecmp("10GbE_1", region_type_string))
++ return 12;
++ else if (!strcasecmp("PTT", region_type_string))
++ return 15;
++ return -1;
++}
++
++static void
++nuke(const char *filename, char *image, int size, int region_type)
++{
++ int i;
++ struct region region;
++ const struct frba *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;
+@@ -2245,6 +2300,7 @@ int main(int argc, char *argv[])
+ 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, mode_fmap_template = 0;
++ int mode_nuke = 0;
+ int mode_gpr0_disable = 0, mode_gpr0_enable = 0, mode_gpr0_status = 0;
+ char *region_type_string = NULL, *region_fname = NULL;
+ const char *layout_fname = NULL;
+@@ -2280,6 +2336,7 @@ 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}
+ };
+
+@@ -2329,35 +2386,8 @@ 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);
+ fprintf(stderr, "run '%s -h' for usage\n", argv[0]);
+@@ -2534,6 +2564,22 @@ 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);
+@@ -2553,7 +2599,8 @@ int main(int argc, char *argv[])
+ if ((mode_dump + mode_layout + mode_fmap_template + mode_extract + mode_inject +
+ mode_setstrap + mode_newlayout + (mode_spifreq | mode_em100 |
+ mode_unlocked | mode_locked) + mode_altmedisable + mode_validate +
+- (mode_gpr0_disable | mode_gpr0_enable) + mode_gpr0_status) > 1) {
++ (mode_gpr0_disable | mode_gpr0_enable) + mode_gpr0_status +
++ mode_nuke) > 1) {
+ fprintf(stderr, "You may not specify more than one mode.\n\n");
+ fprintf(stderr, "run '%s -h' for usage\n", argv[0]);
+ exit(EXIT_FAILURE);
+@@ -2562,7 +2609,8 @@ int main(int argc, char *argv[])
+ if ((mode_dump + mode_layout + mode_fmap_template + mode_extract + mode_inject +
+ mode_setstrap + mode_newlayout + mode_spifreq + mode_em100 +
+ mode_locked + mode_unlocked + mode_density + mode_altmedisable +
+- mode_validate + (mode_gpr0_disable | mode_gpr0_enable) + mode_gpr0_status) == 0) {
++ mode_validate + (mode_gpr0_disable | mode_gpr0_enable) + mode_gpr0_status +
++ mode_nuke) == 0) {
+ fprintf(stderr, "You need to specify a mode.\n\n");
+ fprintf(stderr, "run '%s -h' for usage\n", argv[0]);
+ exit(EXIT_FAILURE);
+@@ -2675,6 +2723,10 @@ 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) {
+ struct fpsba *fpsba = find_fpsba(image, size);
+ struct fmsba *fmsba = find_fmsba(image, size);
+--
+2.39.5
+
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-02 11:00:24 +0000