soc/amd/*/psp: move MSR_CU_CBBCFG to common and rename to MSR_PSP_ADDR

TEST=Checked that the MSR is the same for Stoneyridge, Picasso and
Cezanne.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Id15715ed1c17f4fc475985dcb1c31a83713ee65c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50149
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/soc/amd/common/block/include/amdblocks/psp.h b/src/soc/amd/common/block/include/amdblocks/psp.h
index 8cd8236..9d56d6b 100644
--- a/src/soc/amd/common/block/include/amdblocks/psp.h
+++ b/src/soc/amd/common/block/include/amdblocks/psp.h
@@ -3,6 +3,8 @@
 #ifndef AMD_BLOCK_PSP_H
 #define AMD_BLOCK_PSP_H
 
+#define MSR_PSP_ADDR		0xc00110a2
+
 /* Get the mailbox base address - specific to family of device. */
 void *soc_get_mbox_address(void);
 
diff --git a/src/soc/amd/picasso/psp.c b/src/soc/amd/picasso/psp.c
index 6a4a1ea..ddefd22 100644
--- a/src/soc/amd/picasso/psp.c
+++ b/src/soc/amd/picasso/psp.c
@@ -8,15 +8,14 @@
 #include <amdblocks/smi.h>
 
 #define PSP_MAILBOX_OFFSET		0x10570
-#define MSR_CU_CBBCFG			0xc00110a2
 
 void *soc_get_mbox_address(void)
 {
 	uintptr_t psp_mmio;
 
-	psp_mmio = rdmsr(MSR_CU_CBBCFG).lo;
+	psp_mmio = rdmsr(MSR_PSP_ADDR).lo;
 	if (psp_mmio == 0xffffffff) {
-		printk(BIOS_WARNING, "PSP: MSR_CU_CBBCFG uninitialized\n");
+		printk(BIOS_WARNING, "PSP: MSR_PSP_ADDR uninitialized\n");
 		return 0;
 	}
 
diff --git a/src/soc/amd/stoneyridge/include/soc/southbridge.h b/src/soc/amd/stoneyridge/include/soc/southbridge.h
index 8d82035..219af84 100644
--- a/src/soc/amd/stoneyridge/include/soc/southbridge.h
+++ b/src/soc/amd/stoneyridge/include/soc/southbridge.h
@@ -205,8 +205,6 @@
 #define  BAR3HIDE			BIT(12) /* Bit to hide BAR3 addr */
 #define  PSP_MAILBOX_BAR_EN		BIT(4)
 
-#define MSR_CU_CBBCFG			0xc00110a2 /* PSP Pvt Blk Base Addr */
-
 typedef struct aoac_devs {
 	unsigned int :5;
 	unsigned int ic0e:1; /* 5: I2C0 */
diff --git a/src/soc/amd/stoneyridge/psp.c b/src/soc/amd/stoneyridge/psp.c
index c24b8be..a7fead7 100644
--- a/src/soc/amd/stoneyridge/psp.c
+++ b/src/soc/amd/stoneyridge/psp.c
@@ -44,9 +44,9 @@
 	/* Determine if Bar3Hide has been set, and if hidden get the base from
 	 * the MSR instead. */
 	if (pci_read_config32(SOC_PSP_DEV, PSP_BAR_ENABLES) & BAR3HIDE) {
-		psp_mmio = rdmsr(MSR_CU_CBBCFG).lo;
+		psp_mmio = rdmsr(MSR_PSP_ADDR).lo;
 		if (psp_mmio == 0xffffffff) {
-			printk(BIOS_WARNING, "PSP: BAR hidden, MSR val uninitialized\n");
+			printk(BIOS_WARNING, "PSP: BAR hidden, MSR_PSP_ADDR uninitialized\n");
 			return 0;
 		}
 	} else {