[S] Change in coreboot[master]: soc/amd/stoneyridge/acpi: use available number of CPUs for CPU entries

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/73070 )

Change subject: soc/amd/stoneyridge/acpi: use available number of CPUs for CPU entries
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soc/amd/stoneyridge/acpi: use available number of CPUs for CPU entries

It's sufficient to generate CPU devices for all available CPU cores/
threads instead of for the maximum number of possible CPU cores/threads.

TEST=google/careena with 2 cores still boots and Linux doesn't complain
about ACPI errors due to referenced but not present CPU objects.

Signed-off-by: Felix Held 
Change-Id: I6850edfa305304060092cb5480f4296f4f5ddacc
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73070
Tested-by: build bot (Jenkins) 
Reviewed-by: Matt DeVillier 
---
M src/soc/amd/stoneyridge/acpi.c
1 file changed, 22 insertions(+), 5 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Matt DeVillier: Looks good to me, approved

diff --git a/src/soc/amd/stoneyridge/acpi.c b/src/soc/amd/stoneyridge/acpi.c
index bc3e73a..34d1571 100644
--- a/src/soc/amd/stoneyridge/acpi.c
+++ b/src/soc/amd/stoneyridge/acpi.c
@@ -16,6 +16,7 @@
 #include <gpio.h>
 #include <amdblocks/acpimmio.h>
 #include <amdblocks/acpi.h>
+#include <amdblocks/cpu.h>
 #include <amdblocks/ioapic.h>
 #include <soc/acpi.h>
 #include <soc/pci_devs.h>
@@ -94,11 +95,8 @@

void generate_cpu_entries(const struct device *device)
 {
-	int cores, cpu;
-
-	/* Stoney Ridge is single node, just report # of cores */
-	cores = pci_read_config32(SOC_NB_DEV, NB_CAPABILITIES2) & CMP_CAP_MASK;
-	cores++; /* number of cores is CmpCap+1 */
+	int cpu;
+	const int cores = get_cpu_count();

printk(BIOS_DEBUG, "ACPI \_SB report %d core(s)\n", cores);