mb/google/brya: Add new baseboard hades with variants hades

Add a new baseboard for hades, an Intel RPL based reference design.
Also, add variants for the reference boards hades. This commit is
a stub which only adds the minimum code needed for a successful build.
Need update gpio and memory DQ pins after final shchematic comes out.

BUG=b:269371363
TEST=abuild -a -x -c max -p none -t google/brya -b hades

Signed-off-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Change-Id: Ib7fbdf997df8225cc7814a34f8b4e4e04884dbf9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73055
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tarun Tuli <taruntuli@google.com>
Reviewed-by: Ivy Jian <ivy.jian@quanta.corp-partner.google.com>

10 files changed, 282 insertions, 0 deletions

diff --git a/src/mainboard/google/brya/variants/baseboard/hades/Makefile.inc b/src/mainboard/google/brya/variants/baseboard/hades/Makefile.inc
new file mode 100644
index 0000000000..1693d2e263
--- /dev/null
+++ b/src/mainboard/google/brya/variants/baseboard/hades/Makefile.inc
@@ -0,0 +1,6 @@
+bootblock-y += gpio.c
+
+romstage-y += memory.c
+romstage-y += gpio.c
+
+ramstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/baseboard/hades/devicetree.cb b/src/mainboard/google/brya/variants/baseboard/hades/devicetree.cb
new file mode 100644
index 0000000000..a5e2217fef
--- /dev/null
+++ b/src/mainboard/google/brya/variants/baseboard/hades/devicetree.cb
@@ -0,0 +1,4 @@
+chip soc/intel/alderlake
+	device domain 0 on
+	end
+end
diff --git a/src/mainboard/google/brya/variants/baseboard/hades/gpio.c b/src/mainboard/google/brya/variants/baseboard/hades/gpio.c
new file mode 100644
index 0000000000..9da802119a
--- /dev/null
+++ b/src/mainboard/google/brya/variants/baseboard/hades/gpio.c
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/gpio.h>
+#include <baseboard/variants.h>
+#include <types.h>
+#include <soc/gpio.h>
+#include <vendorcode/google/chromeos/chromeos.h>
+
+/* Pad configuration in ramstage */
+static const struct pad_config gpio_table[] = {
+	/* TODO */
+};
+
+/* Early pad configuration in bootblock */
+static const struct pad_config early_gpio_table[] = {
+	/* TODO */
+};
+
+const struct pad_config *__weak variant_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(gpio_table);
+	return gpio_table;
+}
+
+const struct pad_config *__weak variant_gpio_override_table(size_t *num)
+{
+	*num = 0;
+	return NULL;
+}
+
+const struct pad_config *__weak variant_early_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(early_gpio_table);
+	return early_gpio_table;
+}
+
+static const struct cros_gpio cros_gpios[] = {
+	CROS_GPIO_REC_AL(CROS_GPIO_VIRTUAL, CROS_GPIO_DEVICE_NAME),
+	CROS_GPIO_WP_AH(GPIO_PCH_WP, CROS_GPIO_DEVICE_NAME),
+};
+
+DECLARE_WEAK_CROS_GPIOS(cros_gpios);
+
+const struct pad_config *__weak variant_romstage_gpio_table(size_t *num)
+{
+	*num = 0;
+	return NULL;
+}
diff --git a/src/mainboard/google/brya/variants/baseboard/hades/include/baseboard/ec.h b/src/mainboard/google/brya/variants/baseboard/hades/include/baseboard/ec.h
new file mode 100644
index 0000000000..41091462fd
--- /dev/null
+++ b/src/mainboard/google/brya/variants/baseboard/hades/include/baseboard/ec.h
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef __BASEBOARD_EC_H__
+#define __BASEBOARD_EC_H__
+
+#include <ec/ec.h>
+#include <ec/google/chromeec/ec_commands.h>
+#include <baseboard/gpio.h>
+
+#define MAINBOARD_EC_SCI_EVENTS \
+	(EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_CLOSED)        |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_OPEN)          |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_CONNECTED)      |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_DISCONNECTED)   |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_LOW)       |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_CRITICAL)  |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY)           |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_STATUS)    |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_THERMAL_THRESHOLD) |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_THROTTLE_START)    |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_THROTTLE_STOP)     |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_MKBP)              |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_PD_MCU)            |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_MODE_CHANGE)       |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_USB_MUX))
+#define MAINBOARD_EC_SMI_EVENTS \
+	(EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_CLOSED))
+/* EC can wake from S5 with lid or power button */
+#define MAINBOARD_EC_S5_WAKE_EVENTS \
+	(EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_OPEN)     |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_POWER_BUTTON))
+/*
+ * EC can wake from S3/S0ix with:
+ * 1. Lid open
+ * 2. AC Connect/Disconnect
+ * 3. Power button
+ * 4. Key press
+ * 5. Mode change
+ */
+#define MAINBOARD_EC_S3_WAKE_EVENTS \
+	(MAINBOARD_EC_S5_WAKE_EVENTS |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_CONNECTED)    |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_DISCONNECTED) |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEY_PRESSED)     |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_MODE_CHANGE))
+#define MAINBOARD_EC_S0IX_WAKE_EVENTS \
+	(MAINBOARD_EC_S3_WAKE_EVENTS |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_USB_MUX)         |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_HANG_DETECT))
+/* Log EC wake events plus EC shutdown events */
+#define MAINBOARD_EC_LOG_EVENTS \
+	(EC_HOST_EVENT_MASK(EC_HOST_EVENT_THERMAL_SHUTDOWN) |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_SHUTDOWN) |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_PANIC))
+/*
+ * ACPI related definitions for ASL code.
+ */
+/* Enable Keyboard Backlight */
+#define EC_ENABLE_KEYBOARD_BACKLIGHT
+/* Enable MKBP for buttons and switches */
+#define EC_ENABLE_MKBP_DEVICE
+/* Enable LID switch and provide wake pin for EC */
+#define EC_ENABLE_LID_SWITCH
+#define EC_ENABLE_WAKE_PIN      GPE_EC_WAKE
+/* Enable EC backed PD MCU device in ACPI */
+#define EC_ENABLE_PD_MCU_DEVICE
+#define SIO_EC_MEMMAP_ENABLE     /* EC Memory Map Resources */
+#define SIO_EC_HOST_ENABLE       /* EC Host Interface Resources */
+#define SIO_EC_ENABLE_PS2K       /* Enable PS/2 Keyboard */
+
+#define EC_ENABLE_SYNC_IRQ      /* Enable tight timestamp / wake support */
+
+#endif /* __BASEBOARD_EC_H__ */
diff --git a/src/mainboard/google/brya/variants/baseboard/hades/include/baseboard/gpio.h b/src/mainboard/google/brya/variants/baseboard/hades/include/baseboard/gpio.h
new file mode 100644
index 0000000000..6da54bf037
--- /dev/null
+++ b/src/mainboard/google/brya/variants/baseboard/hades/include/baseboard/gpio.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef __BASEBOARD_GPIO_H__
+#define __BASEBOARD_GPIO_H__
+
+#include <soc/gpe.h>
+#include <soc/gpio.h>
+
+/* TODO: Set the correct values */
+/* eSPI virtual wire reporting */
+#define EC_SCI_GPI		GPE0_ESPI
+/* EC wake is EC_PCH_INT which is routed to GPP_F17 pin */
+#define GPE_EC_WAKE		GPE0_DW2_17
+/* WP signal to PCH */
+#define GPIO_PCH_WP		GPP_E15
+/* EC in RW or RO */
+#define GPIO_EC_IN_RW		GPP_F18
+/* Used to gate SoC's SLP_S0# signal */
+#define GPIO_SLP_S0_GATE	GPP_F9
+/* GPIO IRQ for tight timestamps / wake support */
+#define EC_SYNC_IRQ		GPP_F17_IRQ
+
+#endif /* __BASEBOARD_GPIO_H__ */
diff --git a/src/mainboard/google/brya/variants/baseboard/hades/memory.c b/src/mainboard/google/brya/variants/baseboard/hades/memory.c
new file mode 100644
index 0000000000..b4a26dd45b
--- /dev/null
+++ b/src/mainboard/google/brya/variants/baseboard/hades/memory.c
@@ -0,0 +1,104 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/gpio.h>
+#include <baseboard/variants.h>
+#include <gpio.h>
+
+/* TODO: Set the correct values */
+static const struct mb_cfg baseboard_memcfg = {
+	.type = MEM_TYPE_LP4X,
+
+	.rcomp = {
+		/* Baseboard uses only 100ohm Rcomp resistors */
+		.resistor = 100,
+
+		/* Baseboard Rcomp target values */
+		.targets = {40, 30, 30, 30, 30},
+	},
+
+	/* DQ byte map */
+	.lpx_dq_map = {
+		.ddr0 = {
+			.dq0 = {  9, 11,  8, 10, 12, 14, 13, 15, },
+			.dq1 = {  4,  7,  6,  5,  2,  3,  0,  1, },
+		},
+		.ddr1 = {
+			.dq0 = { 15, 12, 14, 13,  9, 10, 11,  8, },
+			.dq1 = {  0,  1,  3,  2,  7,  5,  4,  6, },
+		},
+		.ddr2 = {
+			.dq0 = {  2,  3,  1,  0,  6,  7,  5,  4, },
+			.dq1 = { 15,  9, 14,  8, 11, 10, 13, 12, },
+		},
+		.ddr3 = {
+			.dq0 = {  3,  1,  2,  0,  4,  6,  7,  5, },
+			.dq1 = { 13, 15, 14, 12, 11,  9,  8, 10, },
+		},
+		.ddr4 = {
+			.dq0 = { 13, 12, 14, 15,  9,  8, 10, 11, },
+			.dq1 = {  4,  7,  5,  6,  1,  2,  0,  3, },
+		},
+		.ddr5 = {
+			.dq0 = {  5,  0,  6,  4,  3,  1,  7,  2, },
+			.dq1 = { 11,  9, 10,  8, 15, 12, 14, 13, },
+		},
+		.ddr6 = {
+			.dq0 = { 15, 12, 14, 13, 10,  9, 11,  8, },
+			.dq1 = {  0,  1,  2,  3,  5,  6,  4,  7, },
+		},
+		.ddr7 = {
+			.dq0 = {  0,  3,  1,  2,  4,  5,  6,  7, },
+			.dq1 = { 11,  8, 13, 14,  9, 12, 15, 10, },
+		},
+	},
+
+	/* DQS CPU<>DRAM map */
+	.lpx_dqs_map = {
+		.ddr0 = { .dqs0 = 1, .dqs1 = 0 },
+		.ddr1 = { .dqs0 = 1, .dqs1 = 0 },
+		.ddr2 = { .dqs0 = 0, .dqs1 = 1 },
+		.ddr3 = { .dqs0 = 0, .dqs1 = 1 },
+		.ddr4 = { .dqs0 = 1, .dqs1 = 0 },
+		.ddr5 = { .dqs0 = 0, .dqs1 = 1 },
+		.ddr6 = { .dqs0 = 1, .dqs1 = 0 },
+		.ddr7 = { .dqs0 = 0, .dqs1 = 1 },
+	},
+
+	.ect = 1, /* Enable Early Command Training */
+};
+
+const struct mb_cfg *__weak variant_memory_params(void)
+{
+	return &baseboard_memcfg;
+}
+
+int __weak variant_memory_sku(void)
+{
+	/*
+	 * Memory configuration board straps
+	 * GPIO_MEM_CONFIG_0	GPP_E11
+	 * GPIO_MEM_CONFIG_1	GPP_E2
+	 * GPIO_MEM_CONFIG_2	GPP_E1
+	 * GPIO_MEM_CONFIG_3	GPP_E12
+	 */
+	gpio_t spd_gpios[] = {
+		GPP_E11,
+		GPP_E2,
+		GPP_E1,
+		GPP_E12,
+	};
+
+	return gpio_base2_value(spd_gpios, ARRAY_SIZE(spd_gpios));
+}
+
+bool __weak variant_is_half_populated(void)
+{
+	/* GPIO_MEM_CH_SEL GPP_E13 */
+	return gpio_get(GPP_E13);
+}
+
+void __weak variant_get_spd_info(struct mem_spd *spd_info)
+{
+	spd_info->topo = MEM_TOPO_MEMORY_DOWN;
+	spd_info->cbfs_index = variant_memory_sku();
+}
diff --git a/src/mainboard/google/brya/variants/hades/include/variant/ec.h b/src/mainboard/google/brya/variants/hades/include/variant/ec.h
new file mode 100644
index 0000000000..4fc0622f15
--- /dev/null
+++ b/src/mainboard/google/brya/variants/hades/include/variant/ec.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef MAINBOARD_EC_H
+#define MAINBOARD_EC_H
+
+#include <baseboard/ec.h>
+
+#endif /* MAINBOARD_GPIO_H */
diff --git a/src/mainboard/google/brya/variants/hades/include/variant/gpio.h b/src/mainboard/google/brya/variants/hades/include/variant/gpio.h
new file mode 100644
index 0000000000..27c87b3fe7
--- /dev/null
+++ b/src/mainboard/google/brya/variants/hades/include/variant/gpio.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef __MAINBOARD_GPIO_H__
+#define __MAINBOARD_GPIO_H__
+
+#include <baseboard/gpio.h>
+
+#endif /* __MAINBOARD_GPIO_H__ */
diff --git a/src/mainboard/google/brya/variants/hades/memory/Makefile.inc b/src/mainboard/google/brya/variants/hades/memory/Makefile.inc
new file mode 100644
index 0000000000..7467ad6361
--- /dev/null
+++ b/src/mainboard/google/brya/variants/hades/memory/Makefile.inc
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+SPD_SOURCES =
+SPD_SOURCES += spd/lp4x/set-0/spd-empty.hex      # dummy SPD
diff --git a/src/mainboard/google/brya/variants/hades/overridetree.cb b/src/mainboard/google/brya/variants/hades/overridetree.cb
new file mode 100644
index 0000000000..ee861420f6
--- /dev/null
+++ b/src/mainboard/google/brya/variants/hades/overridetree.cb
@@ -0,0 +1,4 @@
+chip soc/intel/alderlake
+        device domain 0 on
+        end
+end