coreboot/dell7: add missing ifdtool nuke patch

This is for blanking the ME region on release builds.

This is required for lbmk when doing Libreboot releases,
on images that use an Intel ME region.

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 205 insertions, 0 deletions

diff --git a/config/coreboot/dell7/patches/0005-util-ifdtool-add-nuke-flag-all-0xFF-on-region.patch b/config/coreboot/dell7/patches/0005-util-ifdtool-add-nuke-flag-all-0xFF-on-region.patch
new file mode 100644
index 00000000..66059f24
--- /dev/null
+++ b/config/coreboot/dell7/patches/0005-util-ifdtool-add-nuke-flag-all-0xFF-on-region.patch
@@ -0,0 +1,205 @@
+From ecedecb1224a04531ec544b76ef93efd33cd8f6d Mon Sep 17 00:00:00 2001
+From: Leah Rowe <info@minifree.org>
+Date: Sun, 19 Feb 2023 18:21:43 +0000
+Subject: [PATCH 1/1] 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 36477eef66..3ebef74042 100644
+--- a/util/ifdtool/ifdtool.c
++++ b/util/ifdtool/ifdtool.c
+@@ -2217,6 +2217,7 @@ 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"
+@@ -2225,6 +2226,60 @@ 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;
+@@ -2232,6 +2287,7 @@ 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;
+@@ -2267,6 +2323,7 @@ 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}
+ 	};
+ 
+@@ -2316,35 +2373,8 @@ 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]);
+@@ -2521,6 +2551,22 @@ 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);
+@@ -2540,7 +2586,8 @@ 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);
+@@ -2549,7 +2596,8 @@ 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);
+@@ -2662,6 +2710,10 @@ 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
+