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-rw-r--r--util/ifdtool/ifdtool.c108
-rw-r--r--util/ifdtool/ifdtool.h2
2 files changed, 105 insertions, 5 deletions
diff --git a/util/ifdtool/ifdtool.c b/util/ifdtool/ifdtool.c
index c2dde3c289..625b4cf5ac 100644
--- a/util/ifdtool/ifdtool.c
+++ b/util/ifdtool/ifdtool.c
@@ -331,6 +331,7 @@ static struct region get_region(const struct frba *frba, unsigned int region_typ
region.base = (flreg & base_mask) << 12;
region.limit = ((flreg & limit_mask) >> 4) | 0xfff;
region.size = region.limit - region.base + 1;
+ region.type = region_type;
if (region.size < 0)
region.size = 0;
@@ -995,6 +996,91 @@ static void dump_fd(char *image, int size)
}
}
+/* Takes an image containing an IFD and creates a Flashmap .fmd file template.
+ * This flashmap will contain all IFD regions except the BIOS region.
+ * The BIOS region is created by coreboot itself and 'should' match the IFD region
+ * anyway (CONFIG_VALIDATE_INTEL_DESCRIPTOR should make sure). coreboot built system will use
+ * this template to generate the final Flashmap file.
+ */
+static void create_fmap_template(char *image, int size, const char *layout_fname)
+{
+ const struct frba *frba = find_frba(image, size);
+ if (!frba)
+ exit(EXIT_FAILURE);
+
+ int layout_fd = open(layout_fname, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+ if (layout_fd == -1) {
+ perror("Could not open file");
+ exit(EXIT_FAILURE);
+ }
+
+ char *bbuf = "FLASH@##ROM_BASE## ##ROM_SIZE## {\n";
+ if (write(layout_fd, bbuf, strlen(bbuf)) < 0) {
+ perror("Could not write to file");
+ exit(EXIT_FAILURE);
+ }
+
+ /* fmaptool requires regions in .fmd to be sorted.
+ * => We need to sort the regions by base address before writing them in .fmd File
+ */
+ int count_regions = 0;
+ struct region sorted_regions[MAX_REGIONS] = { 0 };
+ for (unsigned int i = 0; i < max_regions; i++) {
+ struct region region = get_region(frba, i);
+ /* is region invalid? */
+ if (region.size < 1)
+ continue;
+
+ /* Here we decide to use the coreboot generated FMAP BIOS region, instead of
+ * the one specified in the IFD. The case when IFD and FMAP BIOS region do not
+ * match cannot be caught here, therefore one should still validate IFD and
+ * FMAP via CONFIG_VALIDATE_INTEL_DESCRIPTOR
+ */
+ if (i == REGION_BIOS)
+ continue;
+
+ sorted_regions[count_regions] = region;
+ // basically insertion sort
+ for (int i = count_regions-1; i >= 0 ; i--) {
+ if (sorted_regions[i].base > sorted_regions[i+1].base) {
+ struct region tmp = sorted_regions[i];
+ sorted_regions[i] = sorted_regions[i+1];
+ sorted_regions[i+1] = tmp;
+ }
+ }
+ count_regions++;
+ }
+
+ // Now write regions sorted by base address in the fmap file
+ for (int i = 0; i < count_regions; i++) {
+ struct region region = sorted_regions[i];
+ char buf[LAYOUT_LINELEN];
+ snprintf(buf, LAYOUT_LINELEN, "\t%s@0x%X 0x%X\n", region_names[region.type].fmapname, region.base, region.size);
+ if (write(layout_fd, buf, strlen(buf)) < 0) {
+ perror("Could not write to file");
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ char *ebuf = "\tSI_BIOS@##BIOS_BASE## ##BIOS_SIZE## {\n"
+ "\t\t##CONSOLE_ENTRY##\n"
+ "\t\t##MRC_CACHE_ENTRY##\n"
+ "\t\t##SMMSTORE_ENTRY##\n"
+ "\t\t##SPD_CACHE_ENTRY##\n"
+ "\t\t##VPD_ENTRY##\n"
+ "\t\tFMAP@##FMAP_BASE## ##FMAP_SIZE##\n"
+ "\t\tCOREBOOT(CBFS)@##CBFS_BASE## ##CBFS_SIZE##\n"
+ "\t}\n"
+ "}\n";
+ if (write(layout_fd, ebuf, strlen(ebuf)) < 0) {
+ perror("Could not write to file");
+ exit(EXIT_FAILURE);
+ }
+
+ close(layout_fd);
+ printf("Wrote layout to %s\n", layout_fname);
+}
+
static void write_regions(char *image, int size)
{
unsigned int i;
@@ -1689,6 +1775,7 @@ static void print_usage(const char *name)
printf("\n"
" -d | --dump: dump intel firmware descriptor\n"
" -f | --layout <filename> dump regions into a flashrom layout file\n"
+ " -F | --fmap-layout <filename> dump IFD regions into a fmap layout template (.fmd) file\n"
" -t | --validate Validate that the firmware descriptor layout matches the fmap layout\n"
" -x | --extract: extract intel fd modules\n"
" -i | --inject <region>:<module> inject file <module> into region <region>\n"
@@ -1735,7 +1822,7 @@ 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, 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_fmap_template = 0;
char *region_type_string = NULL, *region_fname = NULL;
const char *layout_fname = NULL;
char *new_filename = NULL;
@@ -1748,6 +1835,7 @@ int main(int argc, char *argv[])
static const struct option long_options[] = {
{"dump", 0, NULL, 'd'},
{"layout", 1, NULL, 'f'},
+ {"fmap-template", 1, NULL, 'F'},
{"extract", 0, NULL, 'x'},
{"inject", 1, NULL, 'i'},
{"newlayout", 1, NULL, 'n'},
@@ -1769,7 +1857,7 @@ int main(int argc, char *argv[])
{0, 0, 0, 0}
};
- while ((opt = getopt_long(argc, argv, "S:V:df:D:C:M:xi:n:O:s:p:elruvth?",
+ while ((opt = getopt_long(argc, argv, "S:V:df:F:D:C:M:xi:n:O:s:p:elruvth?",
long_options, &option_index)) != EOF) {
switch (opt) {
case 'd':
@@ -1791,6 +1879,15 @@ int main(int argc, char *argv[])
exit(EXIT_FAILURE);
}
break;
+ case 'F':
+ mode_fmap_template = 1;
+ layout_fname = strdup(optarg);
+ if (!layout_fname) {
+ fprintf(stderr, "No layout file specified\n");
+ fprintf(stderr, "run '%s -h' for usage\n", argv[0]);
+ exit(EXIT_FAILURE);
+ }
+ break;
case 'x':
mode_extract = 1;
break;
@@ -2013,7 +2110,7 @@ int main(int argc, char *argv[])
}
}
- if ((mode_dump + mode_layout + mode_extract + mode_inject +
+ 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) > 1) {
fprintf(stderr, "You may not specify more than one mode.\n\n");
@@ -2021,7 +2118,7 @@ int main(int argc, char *argv[])
exit(EXIT_FAILURE);
}
- if ((mode_dump + mode_layout + mode_extract + mode_inject +
+ 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) == 0) {
fprintf(stderr, "You need to specify a mode.\n\n");
@@ -2086,6 +2183,9 @@ int main(int argc, char *argv[])
if (mode_layout)
dump_flashrom_layout(image, size, layout_fname);
+ if (mode_fmap_template)
+ create_fmap_template(image, size, layout_fname);
+
if (mode_extract)
write_regions(image, size);
diff --git a/util/ifdtool/ifdtool.h b/util/ifdtool/ifdtool.h
index 6029c66d5b..5717a0a87a 100644
--- a/util/ifdtool/ifdtool.h
+++ b/util/ifdtool/ifdtool.h
@@ -191,7 +191,7 @@ struct vtba {
};
struct region {
- int base, limit, size;
+ int base, limit, size, type;
};
struct region_name {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 02:54:53 +0000