[coreboot-gerrit] Change in coreboot[master]: soc/intel/xeon_sp: Look up the IIO_HOB only once

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/47294 )

Change subject: soc/intel/xeon_sp: Look up the IIO_HOB only once
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soc/intel/xeon_sp: Look up the IIO_HOB only once

The HOB does not move, place its location in .bss.

Change-Id: I2c6dbe4d64138e45fa1dfe7580ffa70d0441bd88
Signed-off-by: Arthur Heymans 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47294
Reviewed-by: Marc Jones 
Tested-by: build bot (Jenkins) 
---
M src/soc/intel/xeon_sp/util.c
1 file changed, 4 insertions(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Marc Jones: Looks good to me, approved

diff --git a/src/soc/intel/xeon_sp/util.c b/src/soc/intel/xeon_sp/util.c
index feacca4..75f8a8a 100644
--- a/src/soc/intel/xeon_sp/util.c
+++ b/src/soc/intel/xeon_sp/util.c
@@ -105,9 +105,12 @@
 const IIO_UDS *get_iio_uds(void)
 {
    size_t hob_size;
-	const IIO_UDS *hob;
+	static const IIO_UDS *hob;
    const uint8_t fsp_hob_iio_universal_data_guid[16] = FSP_HOB_IIO_UNIVERSAL_DATA_GUID;

+	if (hob != NULL)
+		return hob;
+
    hob = fsp_find_extension_hob_by_guid(fsp_hob_iio_universal_data_guid, &hob_size);
    assert(hob != NULL && hob_size != 0);
    return hob;