src/mainboard/amd/onyx_poc/mainboard.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <amdblocks/acpi.h>
   4 #include <soc/amd_pci_int_defs.h>
   5 #include <amdblocks/amd_pci_util.h>
   6 #include <types.h>
   7
   8 /* The IRQ mapping in fch_irq_map ends up getting written to the indirect address space that is
   9    accessed via I/O ports 0xc00/0xc01. */
  10
  11 /*
  12  * This controls the device -> IRQ routing.
  13  *
  14  * Hardcoded IRQs:
  15  *  0: timer < soc/amd/common/acpi/lpc.asl
  16  *  1: i8042 - Keyboard
  17  *  2: cascade
  18  *  8: rtc0 <- soc/amd/common/acpi/lpc.asl
  19  *  9: acpi <- soc/amd/common/acpi/lpc.asl
  20  */
  21 static const struct fch_irq_routing fch_irq_map[] = {
  22         { PIRQ_A,       12,             PIRQ_NC },
  23         { PIRQ_B,       14,             PIRQ_NC },
  24         { PIRQ_C,       15,             PIRQ_NC },
  25         { PIRQ_D,       12,             PIRQ_NC },
  26         { PIRQ_E,       14,             PIRQ_NC },
  27         { PIRQ_F,       15,             PIRQ_NC },
  28         { PIRQ_G,       12,             PIRQ_NC },
  29         { PIRQ_H,       14,             PIRQ_NC },
  30
  31         { PIRQ_SCI,     ACPI_SCI_IRQ,   ACPI_SCI_IRQ },
  32         { PIRQ_GPIO,    11,             11 },
  33         { PIRQ_I2C0,    10,             10 },
  34         { PIRQ_I2C1,     7,              7 },
  35         { PIRQ_I2C2,     6,              6 },
  36         { PIRQ_I2C3,     5,              5 },
  37         { PIRQ_UART0,    4,              4 },
  38         { PIRQ_UART1,    3,              3 },
  39
  40         /* The MISC registers are not interrupt numbers */
  41         { PIRQ_MISC,    0xfa,           0x00 },
  42         { PIRQ_MISC0,   0x91,           0x00 },
  43         { PIRQ_HPET_L,  0x00,           0x00 },
  44         { PIRQ_HPET_H,  0x00,           0x00 },
  45 };
  46
  47 const struct fch_irq_routing *mb_get_fch_irq_mapping(size_t *length)
  48 {
  49         *length = ARRAY_SIZE(fch_irq_map);
  50         return fch_irq_map;
  51 }