soc/amd/common/block/gpio_banks/Kconfig: add option for non-soc/ chips

southbridge/amd/pi/hudson uses the common GPIO bank access code from
soc/amd, but doesn't provide all functionality that would be needed to
use the full functionality. Add a Kconfig option that switches off some
functionality in the common SoC GPIO access code, so that more of the
functionality proviced by the common SoC GPIO code can be used in the
AMD binaryPI chipset and board code.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ib10d5d5580aab30a359aa001bb6fc7e9fdb8fc41
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56783
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/amd/common/block/gpio_banks/Kconfig

@@ -5,3 +5,16 @@ config SOC_AMD_COMMON_BLOCK_BANKED_GPIOS
 	  Select this option to use the newer style banks of GPIO signals.
 	  These are at offsets +0x1500, +0x1600, and +0x1700 from the AcpiMmio
 	  base.
+
+if SOC_AMD_COMMON_BLOCK_BANKED_GPIOS
+
+config SOC_AMD_COMMON_BLOCK_BANKED_GPIOS_NON_SOC_CODEBASE
+	bool
+	help
+	  Select this option when selecting the GPIO bank support from AMD
+	  chipsets outside the soc/ subtree that only support a subset of the
+	  features available on the chipsets inside the soc/ subtree. When this
+	  option is selected, no SMI or SCI event can be configured by the GPIO
+	  code.
+
+endif # SOC_AMD_COMMON_BLOCK_BANKED_GPIOS

src/soc/amd/common/block/gpio_banks/gpio.c

@@ -171,8 +171,9 @@ static void set_single_gpio(const struct soc_amd_gpio *g)
 	static const struct soc_amd_event *gev_tbl;
 	static size_t gev_items;
 	int gevent_num;
-	const bool can_set_smi_flags = !(CONFIG(VBOOT_STARTS_BEFORE_BOOTBLOCK) &&
-			ENV_SEPARATE_VERSTAGE);
+	const bool can_set_smi_flags = !((CONFIG(VBOOT_STARTS_BEFORE_BOOTBLOCK) &&
+			ENV_SEPARATE_VERSTAGE) ||
+			CONFIG(SOC_AMD_COMMON_BLOCK_BANKED_GPIOS_NON_SOC_CODEBASE));
 
 	set_gpio_mux(g->gpio, g->function);
 

src/southbridge/amd/pi/hudson/Kconfig

@@ -18,6 +18,7 @@ config SOUTHBRIDGE_SPECIFIC_OPTIONS
 	select SOC_AMD_COMMON_BLOCK_ACPIMMIO
 	select SOC_AMD_COMMON_BLOCK_ACPIMMIO_BIOSRAM
 	select SOC_AMD_COMMON_BLOCK_BANKED_GPIOS
+	select SOC_AMD_COMMON_BLOCK_BANKED_GPIOS_NON_SOC_CODEBASE
 	select SOC_AMD_COMMON_BLOCK_PCI_MMCONF
 
 config EHCI_BAR