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util/ifdtool: Skip unused and reserved Flash Region 

This patch ensures all unused and reserved flash region sections are not
getting listed while using -d option to dump FD.

BUG=b:153888802
TEST=List only used flash region section with below command
> ifdtool -p tgl -d coreboot.rom

Without this CL :
Found Region Section
FLREG0:    0x00000000
  Flash Region 0 (Flash Descriptor): 00000000 - 00000fff
FLREG1:    0x1fff0400
  Flash Region 1 (BIOS): 00400000 - 01ffffff
FLREG2:    0x03ff0001
  Flash Region 2 (Intel ME): 00001000 - 003fffff
FLREG3:    0x00007fff
  Flash Region 3 (GbE): 07fff000 - 00000fff (unused)
FLREG4:    0x00007fff
  Flash Region 4 (Platform Data): 07fff000 - 00000fff (unused)
FLREG5:    0x00007fff
  Flash Region 5 (Reserved): 07fff000 - 00000fff (unused)
FLREG6:    0x00007fff
  Flash Region 6 (Reserved): 07fff000 - 00000fff (unused)
FLREG7:    0x00007fff
  Flash Region 7 (Reserved): 07fff000 - 00000fff (unused)
FLREG8:    0x00007fff
  Flash Region 8 (EC): 07fff000 - 00000fff (unused)

With this CL :
Found Region Section
FLREG0:    0x00000000
  Flash Region 0 (Flash Descriptor): 00000000 - 00000fff
FLREG1:    0x1fff0400
  Flash Region 1 (BIOS): 00400000 - 01ffffff
FLREG2:    0x03ff0001
  Flash Region 2 (Intel ME): 00001000 - 003fffff
FLREG3:    0x00007fff
  Flash Region 3 (GbE): 07fff000 - 00000fff (unused)
FLREG4:    0x00007fff
  Flash Region 4 (Platform Data): 07fff000 - 00000fff (unused)
FLREG8:    0x00007fff
  Flash Region 8 (EC): 07fff000 - 00000fff (unused)

Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Change-Id: I900a29d8968bd61d66c04012e60e1ba4baff786d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44813
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This commit is contained in:
Subrata Banik 2020-08-26 14:02:01 +05:30 committed by Patrick Georgi
parent 15da174652
commit d52df3cd84
1 changed files with 6 additions and 0 deletions
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6
util/ifdtool/ifdtool.c
View File

@ -373,8 +373,14 @@ static void dump_region_layout(char *buf, size_t bufsize, unsigned int num,
static void dump_frba(const frba_t *frba)
{
unsigned int i;
region_t region;
printf("Found Region Section\n");
for (i = 0; i < max_regions; i++) {
region = get_region(frba, i);
/* Skip unused & reserved Flash Region */
if (region.size < 1 && !strcmp(region_name(i), "Reserved"))
continue;
printf("FLREG%u: 0x%08x\n", i, frba->flreg[i]);
dump_region(i, frba);
}