mb/google/guybrush: Add helpers for cbi fw_config settings

Turn on CBI and add helper functions for determining the board
configuration from the firmware config settings in CBI.

BUG=b:187316460
TEST=Built

Signed-off-by: Martin Roth <martinroth@chromium.org>
Change-Id: I212e7f413b4d8a7d15122cde90100a0ec28e88a6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54639
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 23 insertions, 7 deletions

diff --git a/src/mainboard/google/guybrush/variants/baseboard/helpers.c b/src/mainboard/google/guybrush/variants/baseboard/helpers.c
index b0cca28983..5297a4925b 100644
--- a/src/mainboard/google/guybrush/variants/baseboard/helpers.c
+++ b/src/mainboard/google/guybrush/variants/baseboard/helpers.c
@@ -2,11 +2,20 @@
 
 #include <baseboard/variants.h>
 #include <device/device.h>
+#include <fw_config.h>
 #include <soc/iomap.h>
+#include <soc/pci_devs.h>
 
-bool variant_has_fpmcu(void)
+static bool variant_has_device_enabled(const struct device_path *device_path, size_t path_length)
+{
+	const struct device *dev =
+		find_dev_nested_path(all_devices->link_list, device_path, path_length);
+
+	return is_dev_enabled(dev);
+}
+
+__weak bool variant_has_fpmcu(void)
 {
-	DEVTREE_CONST struct device *mmio_dev = NULL;
 	static const struct device_path fpmcu_path[] = {
 		{
 			.type = DEVICE_PATH_MMIO,
@@ -18,11 +27,18 @@ bool variant_has_fpmcu(void)
 			.generic.subid = 0
 		},
 	};
-	mmio_dev = find_dev_nested_path(
-		all_devices->link_list, fpmcu_path, ARRAY_SIZE(fpmcu_path));
 
-	if (mmio_dev == NULL)
-		return false;
+	return variant_has_device_enabled(fpmcu_path, ARRAY_SIZE(fpmcu_path));
+}
+
+__weak bool variant_has_pcie_wwan(void)
+{
+	static const struct device_path pcie_wwan_path[] = {
+		{
+			.type = DEVICE_PATH_PCI,
+			.pci.devfn = PCIE_GPP_2_2_DEVFN,
+		},
+	};
 
-	return mmio_dev->enabled;
+	return variant_has_device_enabled(pcie_wwan_path, ARRAY_SIZE(pcie_wwan_path));
 }