mb/amd/onyx/mainboard: add FCH IRQ mapping table
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Iab640551d6dd246884802ced948ff8c359d922a1
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79470
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/amd/onyx/mainboard.c b/src/mainboard/amd/onyx/mainboard.c
new file mode 100644
index 0000000..af89e14
--- /dev/null
+++ b/src/mainboard/amd/onyx/mainboard.c
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <soc/acpi.h>
+#include <soc/amd_pci_int_defs.h>
+#include <amdblocks/amd_pci_util.h>
+#include <types.h>
+
+/* The IRQ mapping in fch_irq_map ends up getting written to the indirect address space that is
+ accessed via I/O ports 0xc00/0xc01. */
+
+/*
+ * This controls the device -> IRQ routing.
+ *
+ * Hardcoded IRQs:
+ * 0: timer < soc/amd/common/acpi/lpc.asl
+ * 1: i8042 - Keyboard
+ * 2: cascade
+ * 8: rtc0 <- soc/amd/common/acpi/lpc.asl
+ * 9: acpi <- soc/amd/common/acpi/lpc.asl
+ */
+static const struct fch_irq_routing fch_irq_map[] = {
+ { PIRQ_A, 12, PIRQ_NC },
+ { PIRQ_B, 14, PIRQ_NC },
+ { PIRQ_C, 15, PIRQ_NC },
+ { PIRQ_D, 12, PIRQ_NC },
+ { PIRQ_E, 14, PIRQ_NC },
+ { PIRQ_F, 15, PIRQ_NC },
+ { PIRQ_G, 12, PIRQ_NC },
+ { PIRQ_H, 14, PIRQ_NC },
+
+ { PIRQ_SCI, ACPI_SCI_IRQ, ACPI_SCI_IRQ },
+ { PIRQ_GPIO, 11, 11 },
+ { PIRQ_I2C0, 10, 10 },
+ { PIRQ_I2C1, 7, 7 },
+ { PIRQ_I2C2, 6, 6 },
+ { PIRQ_I2C3, 5, 5 },
+ { PIRQ_UART0, 4, 4 },
+ { PIRQ_UART1, 3, 3 },
+
+ /* The MISC registers are not interrupt numbers */
+ { PIRQ_MISC, 0xfa, 0x00 },
+ { PIRQ_MISC0, 0x91, 0x00 },
+ { PIRQ_HPET_L, 0x00, 0x00 },
+ { PIRQ_HPET_H, 0x00, 0x00 },
+};
+
+const struct fch_irq_routing *mb_get_fch_irq_mapping(size_t *length)
+{
+ *length = ARRAY_SIZE(fch_irq_map);
+ return fch_irq_map;
+}