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