mb/google/fatcat: Add minimal code support for fatcat
This patch adds initial code block required to build google/fatcat
board with Intel Meteor Lake Silicon. Later after the initial board
power-on is successful, we shall switch to Panther Lake silicon to
build the google/fatcat reference design.
BUG=b:347669091
TEST=Able to build the google/fatcat and able to hit power-on reset
using Intel Meteor Lake SoC platform.
Change-Id: Iad78aec51b2f0f240991c9c35842764a60be988e
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83197
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
diff --git a/src/mainboard/google/fatcat/mainboard.c b/src/mainboard/google/fatcat/mainboard.c
new file mode 100644
index 0000000..107ee8d
--- /dev/null
+++ b/src/mainboard/google/fatcat/mainboard.c
@@ -0,0 +1,75 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <acpi/acpi.h>
+#include <acpi/acpigen.h>
+#include <baseboard/gpio.h>
+#include <baseboard/variants.h>
+#include <device/device.h>
+#include <ec/ec.h>
+#include <soc/ramstage.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <vendorcode/google/chromeos/chromeos.h>
+
+void __weak fw_config_gpio_padbased_override(struct pad_config *padbased_table)
+{
+ /* default implementation does nothing */
+}
+
+void mainboard_update_soc_chip_config(struct soc_intel_meteorlake_config *config)
+{
+ variant_update_soc_chip_config(config);
+}
+
+__weak void variant_update_soc_chip_config(struct soc_intel_meteorlake_config *config)
+{
+ /* default implementation does nothing */
+}
+
+static void mainboard_init(void *chip_info)
+{
+ struct pad_config *padbased_table;
+ const struct pad_config *base_pads;
+ size_t base_num;
+
+ padbased_table = new_padbased_table();
+ base_pads = variant_gpio_table(&base_num);
+ gpio_padbased_override(padbased_table, base_pads, base_num);
+ fw_config_gpio_padbased_override(padbased_table);
+ gpio_configure_pads_with_padbased(padbased_table);
+ free(padbased_table);
+ baseboard_devtree_update();
+}
+
+void __weak baseboard_devtree_update(void)
+{
+ /* Override dev tree settings per baseboard */
+}
+
+void __weak variant_generate_s0ix_hook(enum s0ix_entry entry)
+{
+ /* Add board-specific MS0X entries */
+ /*
+ if (s0ix_entry == S0IX_ENTRY) {
+ implement variant operations here
+ }
+ if (s0ix_entry == S0IX_EXIT) {
+ implement variant operations here
+ }
+ */
+}
+
+static void mainboard_dev_init(struct device *dev)
+{
+ mainboard_ec_init();
+}
+
+static void mainboard_enable(struct device *dev)
+{
+ dev->ops->init = mainboard_dev_init;
+}
+
+struct chip_operations mainboard_ops = {
+ .init = mainboard_init,
+ .enable_dev = mainboard_enable,
+};