early_init.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <northbridge/intel/i945/i945.h>
#include <southbridge/intel/i82801gx/i82801gx.h>
 
void mainboard_late_rcba_config(void)
{
        /* Device 1f interrupt pin register */
        RCBA32(0x3100) = 0x00042210;
        RCBA32(0x3108) = 0x10004321;
 
        /* PCIe Interrupts */
        RCBA32(D28IP) = 0x00214321;
        /* HD Audio Interrupt */
        RCBA32(D27IP) = 0x00000001;
 
        /* dev irq route register */
        RCBA16(D31IR) = 0x0232;
        RCBA16(D30IR) = 0x3246;
        RCBA16(D29IR) = 0x0235;
        RCBA16(D28IR) = 0x3201;
        RCBA16(D27IR) = 0x3216;
 
        /* Disable unused devices */
        RCBA32(FD) |= FD_INTLAN;
 
        /* Set up I/O Trap #0 for 0xfe00 (SMIC) */
 
        /* Set up I/O Trap #3 for 0x800-0x80c (Trap) */
        RCBA32(0x1e9c) = 0x000200f0;
        RCBA32(0x1e98) = 0x000c0801;
}