soc/amd/phoenix: add VBIOS ID remapping for phoenix

Phoenix2 VBIOS PCI DID is 15c8 though the VBIOS image uses a different
PCI ID i.e. 0x1205, so we need to implement map_oprom_vendev for the SoC.

Change-Id: I7eef5eb41b781f02abb9dd4098e92a8652a431f5
Signed-off-by: Ritul Guru <ritul.bits@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73122
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>

src/soc/amd/phoenix/Makefile.inc

@@ -36,6 +36,7 @@ ramstage-y	+= cpu.c
 ramstage-y	+= fch.c
 ramstage-y	+= fsp_s_params.c
 ramstage-y	+= gpio.c
+ramstage-y	+= graphics.c
 ramstage-y	+= i2c.c
 ramstage-y	+= mca.c
 ramstage-y	+= root_complex.c

src/soc/amd/phoenix/graphics.c

@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <device/pci_rom.h>
+#include <soc/cpu.h>
+#include <stdint.h>
+
+u32 map_oprom_vendev(u32 vendev)
+{
+	switch (vendev) {
+	case PHOENIX2_VBIOS_VID_DID:
+		return PHOENIX2_GPU_VID_DID;
+	}
+
+	return vendev;
+}

src/soc/amd/phoenix/include/soc/cpu.h

@@ -6,4 +6,7 @@
 #define PHOENIX_A0_CPUID	CPUID_FROM_FMS(0x19, 0x74, 0)
 #define PHOENIX2_A0_CPUID	CPUID_FROM_FMS(0x19, 0x78, 0)
 
+#define PHOENIX2_VBIOS_VID_DID	0x100215c8
+#define PHOENIX2_GPU_VID_DID	0x10021205
+
 #endif /* AMD_PHOENIX_CPU_H */