[coreboot-gerrit] [XS] Change in coreboot[main]: soc/intel/xeon_sp/uncore: Don't print uninitialized memory

[Patrick Rudolph (Code Review)]

Patrick Rudolph has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/80546?usp=email )

Change subject: soc/intel/xeon_sp/uncore: Don't print uninitialized memory
......................................................................

soc/intel/xeon_sp/uncore: Don't print uninitialized memory

The struct map_entry has two zero'd entries due to the ifdef
being used. Do not read those entries and do not print those
entries.

Fixes a NULL string being printed along as the vendor and device
ID of the PCI device.

Change-Id: Id87ced76af552c0d064538f8140d1b78724fb833
Signed-off-by: Patrick Rudolph 
---
M src/soc/intel/xeon_sp/uncore.c
1 file changed, 8 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/46/80546/1

diff --git a/src/soc/intel/xeon_sp/uncore.c b/src/soc/intel/xeon_sp/uncore.c
index ddc6e82..de2d175 100644
--- a/src/soc/intel/xeon_sp/uncore.c
+++ b/src/soc/intel/xeon_sp/uncore.c
@@ -72,6 +72,11 @@
    uint64_t value;
    uint64_t mask;

+	if (!entry->reg) {
+		*result = 0;
+		return;
+	}
+
    /* All registers are on a 1MiB granularity. */
    mask = ((1ULL << entry->mask_bits) - 1);
    mask = ~mask;
@@ -103,6 +108,9 @@
 {
    int i;
    for (i = 0; i < NUM_MAP_ENTRIES; i++) {
+		if (!memory_map[i].description)
+			continue;
+
    	printk(BIOS_DEBUG, "MC MAP: %s: 0x%llx\n",
    	       memory_map[i].description, values[i]);
    }