mb/google/volteer: add support for ddr4 memory

Add new ddr_memory_cfg structure to support both DDR4 and LPDDR4x
memory types.

Change existing variant code to use the new meminit_ddr() call
instead of calling meminit_lpddr4x() directly.

BUG=b:161772961
TEST='emerge-volteer coreboot chromeos-bootimage' and verify that
volteer still boots.  NOTE that this only tests the lpddr4 side
of the implementation as I do not have a DDR4 board to test this on.

Change-Id: Id4bca2bfa97530f0d04a0e8d90f01b8281d2aea6
Signed-off-by: Nick Vaccaro <nvaccaro@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44250
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Caveh Jalali <caveh@chromium.org>

2 files changed, 8 insertions, 3 deletions

diff --git a/src/mainboard/google/volteer/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/volteer/variants/baseboard/include/baseboard/variants.h
index 2f90a42e71..84081983c3 100644
--- a/src/mainboard/google/volteer/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/volteer/variants/baseboard/include/baseboard/variants.h
@@ -18,7 +18,7 @@ const struct pad_config *variant_override_gpio_table(size_t *num);
 
 const struct cros_gpio *variant_cros_gpios(size_t *num);
 
-const struct lpddr4x_cfg *variant_memory_params(void);
+const struct ddr_memory_cfg *variant_memory_params(void);
 int variant_memory_sku(void);
 
 #endif /* __BASEBOARD_VARIANTS_H__ */
diff --git a/src/mainboard/google/volteer/variants/baseboard/memory.c b/src/mainboard/google/volteer/variants/baseboard/memory.c
index 2da395aa09..dafeb3b3a6 100644
--- a/src/mainboard/google/volteer/variants/baseboard/memory.c
+++ b/src/mainboard/google/volteer/variants/baseboard/memory.c
@@ -4,7 +4,7 @@
 #include <baseboard/variants.h>
 #include <gpio.h>
 
-static const struct lpddr4x_cfg baseboard_memcfg = {
+static const struct lpddr4x_cfg baseboard_lpddr4x_memcfg = {
 	/* DQ CPU<>DRAM map */
 	.dq_map = {
 		[0] = {
@@ -56,7 +56,12 @@ static const struct lpddr4x_cfg baseboard_memcfg = {
 	.ect = 1, /* Enable Early Command Training */
 };
 
-const struct lpddr4x_cfg *__weak variant_memory_params(void)
+static const struct ddr_memory_cfg baseboard_memcfg = {
+	.mem_type = MEMTYPE_LPDDR4X,
+	.lpddr4_cfg = &baseboard_lpddr4x_memcfg
+};
+
+const struct ddr_memory_cfg *__weak variant_memory_params(void)
 {
 	return &baseboard_memcfg;
 }