1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright 2004 Freescale Semiconductor.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <common.h>
8*4882a593Smuzhiyun #include <linux/libfdt.h>
9*4882a593Smuzhiyun #include <fdt_support.h>
10*4882a593Smuzhiyun #include "cadmus.h"
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #if defined(CONFIG_OF_BOARD_SETUP)
cds_pci_fixup(void * blob)13*4882a593Smuzhiyun static void cds_pci_fixup(void *blob)
14*4882a593Smuzhiyun {
15*4882a593Smuzhiyun int node;
16*4882a593Smuzhiyun const char *path;
17*4882a593Smuzhiyun int len, slot, i;
18*4882a593Smuzhiyun u32 *map = NULL, *piccells = NULL;
19*4882a593Smuzhiyun int off, cells;
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun node = fdt_path_offset(blob, "/aliases");
22*4882a593Smuzhiyun if (node >= 0) {
23*4882a593Smuzhiyun path = fdt_getprop(blob, node, "pci0", NULL);
24*4882a593Smuzhiyun if (path) {
25*4882a593Smuzhiyun node = fdt_path_offset(blob, path);
26*4882a593Smuzhiyun if (node >= 0) {
27*4882a593Smuzhiyun map = fdt_getprop_w(blob, node, "interrupt-map", &len);
28*4882a593Smuzhiyun }
29*4882a593Smuzhiyun /* Each item in "interrupt-map" property is translated with
30*4882a593Smuzhiyun * following cells:
31*4882a593Smuzhiyun * PCI #address-cells, PCI #interrupt-cells,
32*4882a593Smuzhiyun * PIC address, PIC #address-cells, PIC #interrupt-cells.
33*4882a593Smuzhiyun */
34*4882a593Smuzhiyun cells = fdt_getprop_u32_default(blob, path, "#address-cells", 1);
35*4882a593Smuzhiyun cells += fdt_getprop_u32_default(blob, path, "#interrupt-cells", 1);
36*4882a593Smuzhiyun off = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*(map+cells)));
37*4882a593Smuzhiyun if (off <= 0)
38*4882a593Smuzhiyun return;
39*4882a593Smuzhiyun cells += 1;
40*4882a593Smuzhiyun piccells = (u32 *)fdt_getprop(blob, off, "#address-cells", NULL);
41*4882a593Smuzhiyun if (piccells == NULL)
42*4882a593Smuzhiyun return;
43*4882a593Smuzhiyun cells += *piccells;
44*4882a593Smuzhiyun piccells = (u32 *)fdt_getprop(blob, off, "#interrupt-cells", NULL);
45*4882a593Smuzhiyun if (piccells == NULL)
46*4882a593Smuzhiyun return;
47*4882a593Smuzhiyun cells += *piccells;
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun if (map) {
52*4882a593Smuzhiyun len /= sizeof(u32);
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun slot = get_pci_slot();
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun for (i=0;i<len;i+=cells) {
57*4882a593Smuzhiyun /* We rotate the interrupt pins so that the mapping
58*4882a593Smuzhiyun * changes depending on the slot the carrier card is in.
59*4882a593Smuzhiyun */
60*4882a593Smuzhiyun map[3] = ((map[3] + slot - 2) % 4) + 1;
61*4882a593Smuzhiyun map+=cells;
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun }
65*4882a593Smuzhiyun
ft_board_setup(void * blob,bd_t * bd)66*4882a593Smuzhiyun int ft_board_setup(void *blob, bd_t *bd)
67*4882a593Smuzhiyun {
68*4882a593Smuzhiyun ft_cpu_setup(blob, bd);
69*4882a593Smuzhiyun #ifdef CONFIG_PCI
70*4882a593Smuzhiyun ft_pci_setup(blob, bd);
71*4882a593Smuzhiyun cds_pci_fixup(blob);
72*4882a593Smuzhiyun #endif
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun return 0;
75*4882a593Smuzhiyun }
76*4882a593Smuzhiyun #endif
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