77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
/*
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* Copyright 2004 Freescale Semiconductor.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <libfdt.h>
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#include <fdt_support.h>
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#include "cadmus.h"
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#if defined(CONFIG_OF_BOARD_SETUP)
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static void cds_pci_fixup(void *blob)
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{
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int node;
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const char *path;
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int len, slot, i;
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u32 *map = NULL, *piccells = NULL;
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int off, cells;
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node = fdt_path_offset(blob, "/aliases");
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if (node >= 0) {
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path = fdt_getprop(blob, node, "pci0", NULL);
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if (path) {
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node = fdt_path_offset(blob, path);
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if (node >= 0) {
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map = fdt_getprop_w(blob, node, "interrupt-map", &len);
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}
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/* Each item in "interrupt-map" property is translated with
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* following cells:
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* PCI #address-cells, PCI #interrupt-cells,
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* PIC address, PIC #address-cells, PIC #interrupt-cells.
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*/
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cells = fdt_getprop_u32_default(blob, path, "#address-cells", 1);
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cells += fdt_getprop_u32_default(blob, path, "#interrupt-cells", 1);
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off = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*(map+cells)));
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if (off <= 0)
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return;
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cells += 1;
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piccells = (u32 *)fdt_getprop(blob, off, "#address-cells", NULL);
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if (piccells == NULL)
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return;
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cells += *piccells;
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piccells = (u32 *)fdt_getprop(blob, off, "#interrupt-cells", NULL);
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if (piccells == NULL)
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return;
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cells += *piccells;
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}
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}
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if (map) {
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len /= sizeof(u32);
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slot = get_pci_slot();
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for (i=0;i<len;i+=cells) {
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/* We rotate the interrupt pins so that the mapping
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* changes depending on the slot the carrier card is in.
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*/
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map[3] = ((map[3] + slot - 2) % 4) + 1;
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map+=cells;
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}
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}
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}
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int ft_board_setup(void *blob, bd_t *bd)
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{
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ft_cpu_setup(blob, bd);
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#ifdef CONFIG_PCI
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ft_pci_setup(blob, bd);
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cds_pci_fixup(blob);
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#endif
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return 0;
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}
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#endif
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