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11#include <linux/kernel.h>
12#include <linux/init.h>
13#include <linux/mbus.h>
14#include <linux/io.h>
15#include <mach/hardware.h>
16#include "common.h"
17
18
19
20
21#define TARGET_DDR 0
22#define TARGET_DEV_BUS 1
23#define TARGET_SRAM 3
24#define TARGET_PCIE 4
25#define ATTR_DEV_SPI_ROM 0x1e
26#define ATTR_DEV_BOOT 0x1d
27#define ATTR_DEV_NAND 0x2f
28#define ATTR_DEV_CS3 0x37
29#define ATTR_DEV_CS2 0x3b
30#define ATTR_DEV_CS1 0x3d
31#define ATTR_DEV_CS0 0x3e
32#define ATTR_PCIE_IO 0xe0
33#define ATTR_PCIE_MEM 0xe8
34#define ATTR_PCIE1_IO 0xd0
35#define ATTR_PCIE1_MEM 0xd8
36#define ATTR_SRAM 0x01
37
38
39
40
41#define DDR_BASE_CS_OFF(n) (0x0000 + ((n) << 3))
42#define DDR_SIZE_CS_OFF(n) (0x0004 + ((n) << 3))
43
44
45
46
47#define WIN_OFF(n) (BRIDGE_VIRT_BASE + 0x0000 + ((n) << 4))
48#define WIN_CTRL_OFF 0x0000
49#define WIN_BASE_OFF 0x0004
50#define WIN_REMAP_LO_OFF 0x0008
51#define WIN_REMAP_HI_OFF 0x000c
52
53
54struct mbus_dram_target_info kirkwood_mbus_dram_info;
55
56static int __init cpu_win_can_remap(int win)
57{
58 if (win < 4)
59 return 1;
60
61 return 0;
62}
63
64static void __init setup_cpu_win(int win, u32 base, u32 size,
65 u8 target, u8 attr, int remap)
66{
67 void __iomem *addr = (void __iomem *)WIN_OFF(win);
68 u32 ctrl;
69
70 base &= 0xffff0000;
71 ctrl = ((size - 1) & 0xffff0000) | (attr << 8) | (target << 4) | 1;
72
73 writel(base, addr + WIN_BASE_OFF);
74 writel(ctrl, addr + WIN_CTRL_OFF);
75 if (cpu_win_can_remap(win)) {
76 if (remap < 0)
77 remap = base;
78
79 writel(remap & 0xffff0000, addr + WIN_REMAP_LO_OFF);
80 writel(0, addr + WIN_REMAP_HI_OFF);
81 }
82}
83
84void __init kirkwood_setup_cpu_mbus(void)
85{
86 void __iomem *addr;
87 int i;
88 int cs;
89
90
91
92
93 for (i = 0; i < 8; i++) {
94 addr = (void __iomem *)WIN_OFF(i);
95
96 writel(0, addr + WIN_BASE_OFF);
97 writel(0, addr + WIN_CTRL_OFF);
98 if (cpu_win_can_remap(i)) {
99 writel(0, addr + WIN_REMAP_LO_OFF);
100 writel(0, addr + WIN_REMAP_HI_OFF);
101 }
102 }
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104
105
106
107 setup_cpu_win(0, KIRKWOOD_PCIE_IO_PHYS_BASE, KIRKWOOD_PCIE_IO_SIZE,
108 TARGET_PCIE, ATTR_PCIE_IO, KIRKWOOD_PCIE_IO_BUS_BASE);
109 setup_cpu_win(1, KIRKWOOD_PCIE_MEM_PHYS_BASE, KIRKWOOD_PCIE_MEM_SIZE,
110 TARGET_PCIE, ATTR_PCIE_MEM, KIRKWOOD_PCIE_MEM_BUS_BASE);
111 setup_cpu_win(2, KIRKWOOD_PCIE1_IO_PHYS_BASE, KIRKWOOD_PCIE1_IO_SIZE,
112 TARGET_PCIE, ATTR_PCIE1_IO, KIRKWOOD_PCIE1_IO_BUS_BASE);
113 setup_cpu_win(3, KIRKWOOD_PCIE1_MEM_PHYS_BASE, KIRKWOOD_PCIE1_MEM_SIZE,
114 TARGET_PCIE, ATTR_PCIE1_MEM, KIRKWOOD_PCIE1_MEM_BUS_BASE);
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116
117
118
119 setup_cpu_win(4, KIRKWOOD_NAND_MEM_PHYS_BASE, KIRKWOOD_NAND_MEM_SIZE,
120 TARGET_DEV_BUS, ATTR_DEV_NAND, -1);
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124
125 setup_cpu_win(5, KIRKWOOD_SRAM_PHYS_BASE, KIRKWOOD_SRAM_SIZE,
126 TARGET_SRAM, ATTR_SRAM, -1);
127
128
129
130
131 kirkwood_mbus_dram_info.mbus_dram_target_id = TARGET_DDR;
132
133 addr = (void __iomem *)DDR_WINDOW_CPU_BASE;
134
135 for (i = 0, cs = 0; i < 4; i++) {
136 u32 base = readl(addr + DDR_BASE_CS_OFF(i));
137 u32 size = readl(addr + DDR_SIZE_CS_OFF(i));
138
139
140
141
142 if (size & 1) {
143 struct mbus_dram_window *w;
144
145 w = &kirkwood_mbus_dram_info.cs[cs++];
146 w->cs_index = i;
147 w->mbus_attr = 0xf & ~(1 << i);
148 w->base = base & 0xffff0000;
149 w->size = (size | 0x0000ffff) + 1;
150 }
151 }
152 kirkwood_mbus_dram_info.num_cs = cs;
153}
154