soc/intel/cannonlake: Support different SPD read type for each slot

Also clean up cannonlake_memcfg_init.

The major changes include:
(1) Add enum 'mem_info_read_type' to spd_info.
(2) Add per-dimm-slot spd_info to cnl_mb_cfg.
(3) Setup memory config for each slot independently.
(4) Squash meminit_memcfg_spd().

BUG=chromium:960581, b:124990009
BRANCH=none
TEST=boot hatch, hatch_whl, and kohaku

Change-Id: I686a85996858204c20fd05ef24787a0487817c34
Signed-off-by: Philip Chen <philipchen@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32513
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

6 files changed, 72 insertions, 81 deletions

diff --git a/src/mainboard/google/hatch/romstage.c b/src/mainboard/google/hatch/romstage.c
index bdf951b016..2c630a8ce8 100644
--- a/src/mainboard/google/hatch/romstage.c
+++ b/src/mainboard/google/hatch/romstage.c
@@ -16,23 +16,63 @@
 #include <baseboard/variants.h>
 #include <console/console.h>
 #include <ec/google/chromeec/ec.h>
+#include <gpio.h>
 #include <memory_info.h>
 #include <soc/cnl_memcfg_init.h>
 #include <soc/romstage.h>
 #include <string.h>
 
+/* Memory configuration board straps */
+#define GPIO_MEM_CONFIG_0	GPP_F20
+#define GPIO_MEM_CONFIG_1	GPP_F21
+#define GPIO_MEM_CONFIG_2	GPP_F11
+#define GPIO_MEM_CONFIG_3	GPP_F22
+
+/*
+ * GPIO_MEM_CH_SEL is set to 1 for single channel skus
+ * and 0 for dual channel skus.
+ */
+#define GPIO_MEM_CH_SEL		GPP_F2
+
+static int memory_sku(void)
+{
+	const gpio_t spd_gpios[] = {
+		GPIO_MEM_CONFIG_0,
+		GPIO_MEM_CONFIG_1,
+		GPIO_MEM_CONFIG_2,
+		GPIO_MEM_CONFIG_3,
+	};
+
+	return gpio_base2_value(spd_gpios, ARRAY_SIZE(spd_gpios));
+}
+
 void mainboard_memory_init_params(FSPM_UPD *memupd)
 {
 	struct cnl_mb_cfg memcfg;
-
-	const struct spd_info spd = {
-		.spd_by_index = true,
-		.spd_spec.spd_index = variant_memory_sku(),
-	};
+	int mem_sku;
+	int is_single_ch_mem;
 
 	variant_memory_params(&memcfg);
-	cannonlake_memcfg_init(&memupd->FspmConfig,
-			       &memcfg, &spd);
+	mem_sku = memory_sku();
+	/*
+	 * GPP_F2 is the MEM_CH_SEL gpio, which is set to 1 for single
+	 * channel skus and 0 for dual channel skus.
+	 */
+	is_single_ch_mem = gpio_get(GPIO_MEM_CH_SEL);
+
+	/*
+	 * spd[0]-spd[3] map to CH0D0, CH0D1, CH1D0, CH1D1 respectively.
+	 * Dual-DIMM memory is not used in hatch family, so we only
+	 * fill in spd_info for CH0D0 and CH1D0 here.
+	 */
+	memcfg.spd[0].read_type = READ_SPD_CBFS;
+	memcfg.spd[0].spd_spec.spd_index = mem_sku;
+	if (!is_single_ch_mem) {
+		memcfg.spd[2].read_type = READ_SPD_CBFS;
+		memcfg.spd[2].spd_spec.spd_index = mem_sku;
+	}
+
+	cannonlake_memcfg_init(&memupd->FspmConfig, &memcfg);
 }
 
 void mainboard_get_dram_part_num(const char **part_num, size_t *len)
diff --git a/src/mainboard/google/hatch/variants/baseboard/include/baseboard/gpio.h b/src/mainboard/google/hatch/variants/baseboard/include/baseboard/gpio.h
index 5d6311ba24..e83732cb62 100644
--- a/src/mainboard/google/hatch/variants/baseboard/include/baseboard/gpio.h
+++ b/src/mainboard/google/hatch/variants/baseboard/include/baseboard/gpio.h
@@ -22,13 +22,6 @@
 
 #define GPIO_PCH_WP	        GPP_C20
 
-/* Memory configuration board straps */
-#define GPIO_MEM_CONFIG_0	GPP_F20
-#define GPIO_MEM_CONFIG_1	GPP_F21
-#define GPIO_MEM_CONFIG_2	GPP_F11
-#define GPIO_MEM_CONFIG_3	GPP_F22
-
-
 /* EC wake pin is LAN_WAKE# */
 #define GPE_EC_WAKE		GPE0_LAN_WAK
 
diff --git a/src/mainboard/google/hatch/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/hatch/variants/baseboard/include/baseboard/variants.h
index d41ad536f2..17bd5df63d 100644
--- a/src/mainboard/google/hatch/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/hatch/variants/baseboard/include/baseboard/variants.h
@@ -31,9 +31,6 @@ const struct pad_config *base_early_gpio_table(size_t *num);
 const struct pad_config *override_gpio_table(size_t *num);
 const struct pad_config *override_early_gpio_table(size_t *num);
 
-/* Return memory SKU for the board. */
-int variant_memory_sku(void);
-
 /* Return board specific memory configuration */
 void variant_memory_params(struct cnl_mb_cfg *bcfg);
 
diff --git a/src/mainboard/google/hatch/variants/baseboard/memory.c b/src/mainboard/google/hatch/variants/baseboard/memory.c
index 580bdc9ab3..bcfc49f20e 100644
--- a/src/mainboard/google/hatch/variants/baseboard/memory.c
+++ b/src/mainboard/google/hatch/variants/baseboard/memory.c
@@ -15,16 +15,15 @@
 
 #include <baseboard/variants.h>
 #include <baseboard/gpio.h>
-#include <gpio.h>
 #include <soc/cnl_memcfg_init.h>
 #include <string.h>
 
 static const struct cnl_mb_cfg baseboard_memcfg = {
 	/* Baseboard uses 121, 81 and 100 rcomp resistors */
-	.rcomp_resistor = { 121, 81, 100 },
+	.rcomp_resistor = {121, 81, 100},
 
 	/* Baseboard Rcomp target values */
-	.rcomp_targets = { 100, 40, 20, 20, 26 },
+	.rcomp_targets = {100, 40, 20, 20, 26},
 
 	/* Set CaVref config to 2 */
 	.vref_ca_config = 2,
@@ -36,32 +35,4 @@ static const struct cnl_mb_cfg baseboard_memcfg = {
 void __weak variant_memory_params(struct cnl_mb_cfg *bcfg)
 {
 	memcpy(bcfg, &baseboard_memcfg, sizeof(baseboard_memcfg));
-	/*
-	 * GPP_F2 is the MEM_CH_SEL gpio, which is set to 1 for single
-	 * channel skus and 0 for dual channel skus.
-	 */
-	if (gpio_get(GPP_F2) == 1) {
-		/*
-		 * Single channel config: for Hatch, Channel 0 is
-		 * always populated.
-		 */
-		bcfg->channel_empty[0] = 0;
-		bcfg->channel_empty[1] = 1;
-	} else {
-		/* Dual channel config: both channels populated. */
-		bcfg->channel_empty[0] = 0;
-		bcfg->channel_empty[1] = 0;
-	}
-}
-
-int __weak variant_memory_sku(void)
-{
-	const gpio_t spd_gpios[] = {
-		GPIO_MEM_CONFIG_0,
-		GPIO_MEM_CONFIG_1,
-		GPIO_MEM_CONFIG_2,
-		GPIO_MEM_CONFIG_3,
-	};
-
-	return gpio_base2_value(spd_gpios, ARRAY_SIZE(spd_gpios));
 }
diff --git a/src/mainboard/google/hatch/variants/kohaku/memory.c b/src/mainboard/google/hatch/variants/kohaku/memory.c
index 27ae3d8fb2..490124776e 100644
--- a/src/mainboard/google/hatch/variants/kohaku/memory.c
+++ b/src/mainboard/google/hatch/variants/kohaku/memory.c
@@ -15,7 +15,6 @@
 
 #include <baseboard/variants.h>
 #include <baseboard/gpio.h>
-#include <gpio.h>
 #include <soc/cnl_memcfg_init.h>
 #include <string.h>
 
@@ -30,8 +29,8 @@ static const struct cnl_mb_cfg baseboard_memcfg = {
 	 * the index = pin number on SoC
 	 * the value = pin number on lpddr3 part
 	 */
-	.dqs_map[DDR_CH0] = { 0, 1, 3, 2, 5, 7, 6, 4 },
-	.dqs_map[DDR_CH1] = { 1, 3, 2, 0, 5, 7, 6, 4 },
+	.dqs_map[DDR_CH0] = {0, 1, 3, 2, 5, 7, 6, 4},
+	.dqs_map[DDR_CH1] = {1, 3, 2, 0, 5, 7, 6, 4},
 
 	.dq_map[DDR_CH0] = {
 		{0xf, 0xf0},
@@ -40,7 +39,7 @@ static const struct cnl_mb_cfg baseboard_memcfg = {
 		{0xf, 0x0},
 		{0xff, 0x0},
 		{0xff, 0x0}
-		},
+	},
 	.dq_map[DDR_CH1] = {
 		{0xf, 0xf0},
 		{0x0, 0xf0},
@@ -48,13 +47,13 @@ static const struct cnl_mb_cfg baseboard_memcfg = {
 		{0xf, 0x0},
 		{0xff, 0x0},
 		{0xff, 0x0}
-		},
+	},
 
 	/* Kohaku uses 200, 80.6 and 162 rcomp resistors */
-	.rcomp_resistor = { 200, 81, 162 },
+	.rcomp_resistor = {200, 81, 162},
 
 	/* Kohaku Rcomp target values */
-	.rcomp_targets = { 100, 40, 40, 23, 40 },
+	.rcomp_targets = {100, 40, 40, 23, 40},
 
 	/* Set CaVref config to 0 for LPDDR3 */
 	.vref_ca_config = 0,
@@ -66,20 +65,4 @@ static const struct cnl_mb_cfg baseboard_memcfg = {
 void variant_memory_params(struct cnl_mb_cfg *bcfg)
 {
 	memcpy(bcfg, &baseboard_memcfg, sizeof(baseboard_memcfg));
-	/*
-	 * GPP_F2 is the MEM_CH_SEL gpio, which is set to 1 for single
-	 * channel skus and 0 for dual channel skus.
-	 */
-	if (gpio_get(GPP_F2) == 1) {
-		/*
-		 * Single channel config: for kohaku, Channel 0 is
-		 * always populated.
-		 */
-		bcfg->channel_empty[0] = 0;
-		bcfg->channel_empty[1] = 1;
-	} else {
-		/* Dual channel config: both channels populated. */
-		bcfg->channel_empty[0] = 0;
-		bcfg->channel_empty[1] = 0;
-	}
 }
diff --git a/src/mainboard/google/sarien/romstage.c b/src/mainboard/google/sarien/romstage.c
index e83cd4aed4..20eee7f34b 100644
--- a/src/mainboard/google/sarien/romstage.c
+++ b/src/mainboard/google/sarien/romstage.c
@@ -18,6 +18,18 @@
 #include <soc/romstage.h>
 
 static const struct cnl_mb_cfg memcfg = {
+	/* Access memory info through SMBUS. */
+	.spd[0] = {
+		.read_type = READ_SMBUS,
+		.spd_spec = {.spd_smbus_address = 0xa0},
+	},
+	.spd[1] = {.read_type = NOT_EXISTING},
+	.spd[2] = {
+		.read_type = READ_SMBUS,
+		.spd_spec = {.spd_smbus_address = 0xa4},
+	},
+	.spd[3] = {.read_type = NOT_EXISTING},
+
 	/*
 	 * The dqs_map arrays map the ddr4 pins to the SoC pins
 	 * for both channels.
@@ -25,16 +37,16 @@ static const struct cnl_mb_cfg memcfg = {
 	 * the index = pin number on ddr4 part
 	 * the value = pin number on SoC
 	 */
-	.dqs_map[DDR_CH0] = { 0, 1, 4, 5, 2, 3, 6, 7 },
-	.dqs_map[DDR_CH1] = { 0, 1, 4, 5, 2, 3, 6, 7 },
+	.dqs_map[DDR_CH0] = {0, 1, 4, 5, 2, 3, 6, 7},
+	.dqs_map[DDR_CH1] = {0, 1, 4, 5, 2, 3, 6, 7},
 
 	/* Baseboard uses 121, 81 and 100 rcomp resistors */
-	.rcomp_resistor = { 121, 81, 100 },
+	.rcomp_resistor = {121, 81, 100},
 
 	/*
 	 * Baseboard Rcomp target values.
 	 */
-	.rcomp_targets = { 100, 40, 20, 20, 26 },
+	.rcomp_targets = {100, 40, 20, 20, 26},
 
 	/* Disable Early Command Training */
 	.ect = 0,
@@ -45,12 +57,7 @@ static const struct cnl_mb_cfg memcfg = {
 
 void mainboard_memory_init_params(FSPM_UPD *memupd)
 {
-	const struct spd_info spd = {
-		.spd_smbus_address[0] = 0xa0,
-		.spd_smbus_address[2] = 0xa4
-	};
-
 	wilco_ec_romstage_init();
 
-	cannonlake_memcfg_init(&memupd->FspmConfig, &memcfg, &spd);
+	cannonlake_memcfg_init(&memupd->FspmConfig, &memcfg);
 }