drivers/amd/opensil: Add hooks to populate CBMEM_ID_MEMINFO

Add a hooks that will populate mem_info structure with DIMM data
obtained from OpenSIL. As the memory population may be SoC-specific,
call a SoC-specific hook to fill the data.

Change-Id: I0b489c685877ac56f45e0e3abd0bd1b64549585b
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/89484
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>

src/drivers/amd/opensil/Makefile.mk

@@ -7,6 +7,7 @@ subdirs-y += mpio
 romstage-y += romstage.c
 
 ramstage-y += acpi.c
+ramstage-y += dmi.c
 ramstage-y += ramstage.c
 ramstage-y += memmap.c
 

src/drivers/amd/opensil/dmi.c

@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <bootstate.h>
+#include "opensil.h"
+
+__weak void opensil_smbios_fill_cbmem_meminfo(void) { }
+
+static void prepare_dmi_17(void *unused)
+{
+	opensil_smbios_fill_cbmem_meminfo();
+}
+
+BOOT_STATE_INIT_ENTRY(BS_DEV_ENUMERATE, BS_ON_ENTRY, prepare_dmi_17, NULL);

src/drivers/amd/opensil/opensil.h

@@ -5,6 +5,7 @@
 
 #include <acpi/acpi.h>
 #include <device/device.h>
+#include <smbios.h>
 
 /* Set up openSIL env and call TP1 */
 void amd_opensil_silicon_init(void);
@@ -14,5 +15,9 @@ void configure_mpio(void);
 void amd_opensil_add_memmap(struct device *dev, unsigned long *idx);
 /* Fill in FADT from openSIL */
 void amd_opensil_fill_fadt_io_ports(acpi_fadt_t *fadt);
+/* Marshalls dimm info from SIL_DMI_INFO into CBMEM_ID_MEMINFO */
+void opensil_smbios_fill_cbmem_meminfo(void);
+/* Fill DIMM locators using OpenSIL DMI info, returns 0 on success */
+int opensil_smbios_fill_dimm_locator(const struct dimm_info *dimm, struct smbios_type17 *t);
 
 #endif /* OPENSIL_DRIVER_H */