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>

src/mainboard/google/volteer/romstage.c

@@ -15,7 +15,7 @@
 void mainboard_memory_init_params(FSPM_UPD *mupd)
 {
 	FSP_M_CONFIG *mem_cfg = &mupd->FspmConfig;
-	const struct lpddr4x_cfg *board_cfg = variant_memory_params();
+	const struct ddr_memory_cfg *board_cfg = variant_memory_params();
 	const struct spd_info spd_info = {
 		.topology = MEMORY_DOWN,
 		.md_spd_loc = SPD_CBFS,
@@ -27,7 +27,7 @@ void mainboard_memory_init_params(FSPM_UPD *mupd)
 	if (fw_config_probe(FW_CONFIG(AUDIO, NONE)))
 		mem_cfg->PchHdaEnable = 0;
 
-	meminit_lpddr4x(mem_cfg, board_cfg, &spd_info, half_populated);
+	meminit_ddr(mem_cfg, board_cfg, &spd_info, half_populated);
 }
 
 bool mainboard_get_dram_part_num(const char **part_num, size_t *len)

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__ */

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;
 }

src/mainboard/google/volteer/variants/delbin/memory.c

@@ -54,7 +54,12 @@ static const struct lpddr4x_cfg delbin_memcfg = {
 	.ect = 1, /* Enable Early Command Training */
 };
 
-const struct lpddr4x_cfg *variant_memory_params(void)
+static const struct ddr_memory_cfg board_memcfg = {
+	.mem_type = MEMTYPE_LPDDR4X,
+	.lpddr4_cfg = &delbin_memcfg
+};
+
+const struct ddr_memory_cfg *variant_memory_params(void)
 {
-	return &delbin_memcfg;
+	return &board_memcfg;
 }

src/mainboard/google/volteer/variants/malefor/memory.c

@@ -54,7 +54,12 @@ static const struct lpddr4x_cfg malefor_memcfg = {
 	.ect = 1, /* Enable Early Command Training */
 };
 
-const struct lpddr4x_cfg *variant_memory_params(void)
+static const struct ddr_memory_cfg board_memcfg = {
+	.mem_type = MEMTYPE_LPDDR4X,
+	.lpddr4_cfg = &malefor_memcfg
+};
+
+const struct ddr_memory_cfg *variant_memory_params(void)
 {
-	return &malefor_memcfg;
+	return &board_memcfg;
 }

src/mainboard/google/volteer/variants/terrador/memory.c

@@ -54,7 +54,12 @@ static const struct lpddr4x_cfg terrador_memcfg = {
 	.ect = 1, /* Enable Early Command Training */
 };
 
-const struct lpddr4x_cfg *variant_memory_params(void)
+static const struct ddr_memory_cfg board_memcfg = {
+	.mem_type = MEMTYPE_LPDDR4X,
+	.lpddr4_cfg = &terrador_memcfg
+};
+
+const struct ddr_memory_cfg *variant_memory_params(void)
 {
-	return &terrador_memcfg;
+	return &board_memcfg;
 }

src/mainboard/google/volteer/variants/todor/memory.c

@@ -54,7 +54,12 @@ static const struct lpddr4x_cfg todor_memcfg = {
 	.ect = 1, /* Enable Early Command Training */
 };
 
-const struct lpddr4x_cfg *variant_memory_params(void)
+static const struct ddr_memory_cfg board_memcfg = {
+	.mem_type = MEMTYPE_LPDDR4X,
+	.lpddr4_cfg = &todor_memcfg
+};
+
+const struct ddr_memory_cfg *variant_memory_params(void)
 {
-	return &todor_memcfg;
+	return &board_memcfg;
 }

src/mainboard/google/volteer/variants/voxel/memory.c

@@ -54,7 +54,12 @@ static const struct lpddr4x_cfg voxel_memcfg = {
 	.ect = 1, /* Enable Early Command Training */
 };
 
-const struct lpddr4x_cfg *variant_memory_params(void)
+static const struct ddr_memory_cfg board_memcfg = {
+	.mem_type = MEMTYPE_LPDDR4X,
+	.lpddr4_cfg = &voxel_memcfg
+};
+
+const struct ddr_memory_cfg *variant_memory_params(void)
 {
-	return &voxel_memcfg;
+	return &board_memcfg;
 }