Change in coreboot[master]: mb/google/brya: Add overrideable variant_update_descriptor

[Tim Wawrzynczak (Code Review)]

Tim Wawrzynczak has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/56680 )

Change subject: mb/google/brya: Add overrideable variant_update_descriptor
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mb/google/brya: Add overrideable variant_update_descriptor

Some variants may want to uniquely modify the descriptor region based on
their own criteria. Therefore add a weak function that variants can use
for this.

BUG=b:188577893

Change-Id: I1ac3b639b77855695aabac79a069b621554df707
Signed-off-by: Tim Wawrzynczak 
---
M src/mainboard/google/brya/bootblock.c
M src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h
2 files changed, 9 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/80/56680/1

diff --git a/src/mainboard/google/brya/bootblock.c b/src/mainboard/google/brya/bootblock.c
index 4b655c0..23dfd01 100644
--- a/src/mainboard/google/brya/bootblock.c
+++ b/src/mainboard/google/brya/bootblock.c
@@ -20,6 +20,11 @@
 #define FLASH_VAL_SIGN		0xFF0A55A
 #define FLMSTR_WR_SHIFT_V2	20

+__weak bool variant_update_descriptor(uint8_t *desc)
+{
+	return false;
+}
+
 /* It checks whether host(Flash Master 1) has write access to the Descriptor Region or not */
 static int is_descriptor_writeable(uint8_t *desc)
 {
@@ -80,7 +85,7 @@
    if (!read_descriptor(&desc_rdev, si_desc_buf) || !is_descriptor_writeable(si_desc_buf))
    	return;

-	if (!update_for_a0(si_desc_buf))
+	if (!update_for_a0(si_desc_buf) && !variant_update_descriptor(si_desc_buf))
    	return;

if (!write_descriptor(&desc_rdev, si_desc_buf)) {
diff --git a/src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h
index c938de8..fa58164 100644
--- a/src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h
@@ -22,4 +22,7 @@
 bool variant_is_half_populated(void);
 void variant_update_soc_chip_config(struct soc_intel_alderlake_config *config);

+/* Optional function for variants to update the descriptor when it is writable */
+bool variant_update_descriptor(uint8_t *desc);
+
 #endif /*__BASEBOARD_VARIANTS_H__ */