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authorStanislav Samsonov <samsonov@marvell.com>2008-06-22 16:45:10 -0400
committerLennert Buytenhek <buytenh@marvell.com>2008-06-22 16:45:10 -0400
commit794d15b25df5dda10efba600d6dd6cd74a7aa9cb (patch)
tree10797e90295895994ea3f2363e84e555e40abb97 /arch/arm/mach-mv78xx0/addr-map.c
parenta9311cfed241ebcd6b5f9be5c8c6d519bf22f9e7 (diff)
[ARM] add Marvell 78xx0 ARM SoC support
The Marvell Discovery Duo (MV78xx0) is a family of ARM SoCs featuring (depending on the model) one or two Feroceon CPU cores with 512K of L2 cache and VFP coprocessors running at (depending on the model) between 800 MHz and 1.2 GHz, and features a DDR2 controller, two PCIe interfaces that can each run either in x4 or quad x1 mode, three USB 2.0 interfaces, two 3Gb/s SATA II interfaces, a SPI interface, two TWSI interfaces, a crypto accelerator, IDMA/XOR engines, a SPI interface, four UARTs, and depending on the model, two or four gigabit ethernet interfaces. This patch adds basic support for the platform, and allows booting on the MV78x00 development board, with functional UARTs, SATA, PCIe, GigE and USB ports. Signed-off-by: Stanislav Samsonov <samsonov@marvell.com> Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Diffstat (limited to 'arch/arm/mach-mv78xx0/addr-map.c')
-rw-r--r--arch/arm/mach-mv78xx0/addr-map.c156
1 files changed, 156 insertions, 0 deletions
diff --git a/arch/arm/mach-mv78xx0/addr-map.c b/arch/arm/mach-mv78xx0/addr-map.c
new file mode 100644
index 000000000000..4004b672a2eb
--- /dev/null
+++ b/arch/arm/mach-mv78xx0/addr-map.c
@@ -0,0 +1,156 @@
1/*
2 * arch/arm/mach-mv78xx0/addr-map.c
3 *
4 * Address map functions for Marvell MV78xx0 SoCs
5 *
6 * This file is licensed under the terms of the GNU General Public
7 * License version 2. This program is licensed "as is" without any
8 * warranty of any kind, whether express or implied.
9 */
10
11#include <linux/kernel.h>
12#include <linux/init.h>
13#include <linux/mbus.h>
14#include <asm/io.h>
15#include "common.h"
16
17/*
18 * Generic Address Decode Windows bit settings
19 */
20#define TARGET_DDR 0
21#define TARGET_DEV_BUS 1
22#define TARGET_PCIE0 4
23#define TARGET_PCIE1 8
24#define TARGET_PCIE(i) ((i) ? TARGET_PCIE1 : TARGET_PCIE0)
25#define ATTR_DEV_SPI_ROM 0x1f
26#define ATTR_DEV_BOOT 0x2f
27#define ATTR_DEV_CS3 0x37
28#define ATTR_DEV_CS2 0x3b
29#define ATTR_DEV_CS1 0x3d
30#define ATTR_DEV_CS0 0x3e
31#define ATTR_PCIE_IO(l) (0xf0 & ~(0x10 << (l)))
32#define ATTR_PCIE_MEM(l) (0xf8 & ~(0x10 << (l)))
33
34/*
35 * Helpers to get DDR bank info
36 */
37#define DDR_BASE_CS_OFF(n) (0x0000 + ((n) << 3))
38#define DDR_SIZE_CS_OFF(n) (0x0004 + ((n) << 3))
39
40/*
41 * CPU Address Decode Windows registers
42 */
43#define WIN0_OFF(n) (BRIDGE_VIRT_BASE + 0x0000 + ((n) << 4))
44#define WIN8_OFF(n) (BRIDGE_VIRT_BASE + 0x0900 + (((n) - 8) << 4))
45#define WIN_CTRL_OFF 0x0000
46#define WIN_BASE_OFF 0x0004
47#define WIN_REMAP_LO_OFF 0x0008
48#define WIN_REMAP_HI_OFF 0x000c
49
50
51struct mbus_dram_target_info mv78xx0_mbus_dram_info;
52
53static void __init __iomem *win_cfg_base(int win)
54{
55 /*
56 * Find the control register base address for this window.
57 *
58 * BRIDGE_VIRT_BASE points to the right (CPU0's or CPU1's)
59 * MBUS bridge depending on which CPU core we're running on,
60 * so we don't need to take that into account here.
61 */
62
63 return (void __iomem *)((win < 8) ? WIN0_OFF(win) : WIN8_OFF(win));
64}
65
66static int __init cpu_win_can_remap(int win)
67{
68 if (win < 8)
69 return 1;
70
71 return 0;
72}
73
74static void __init setup_cpu_win(int win, u32 base, u32 size,
75 u8 target, u8 attr, int remap)
76{
77 void __iomem *addr = win_cfg_base(win);
78 u32 ctrl;
79
80 base &= 0xffff0000;
81 ctrl = ((size - 1) & 0xffff0000) | (attr << 8) | (target << 4) | 1;
82
83 writel(base, addr + WIN_BASE_OFF);
84 writel(ctrl, addr + WIN_CTRL_OFF);
85 if (cpu_win_can_remap(win)) {
86 if (remap < 0)
87 remap = base;
88
89 writel(remap & 0xffff0000, addr + WIN_REMAP_LO_OFF);
90 writel(0, addr + WIN_REMAP_HI_OFF);
91 }
92}
93
94void __init mv78xx0_setup_cpu_mbus(void)
95{
96 void __iomem *addr;
97 int i;
98 int cs;
99
100 /*
101 * First, disable and clear windows.
102 */
103 for (i = 0; i < 14; i++) {
104 addr = win_cfg_base(i);
105
106 writel(0, addr + WIN_BASE_OFF);
107 writel(0, addr + WIN_CTRL_OFF);
108 if (cpu_win_can_remap(i)) {
109 writel(0, addr + WIN_REMAP_LO_OFF);
110 writel(0, addr + WIN_REMAP_HI_OFF);
111 }
112 }
113
114 /*
115 * Setup MBUS dram target info.
116 */
117 mv78xx0_mbus_dram_info.mbus_dram_target_id = TARGET_DDR;
118
119 if (mv78xx0_core_index() == 0)
120 addr = (void __iomem *)DDR_WINDOW_CPU0_BASE;
121 else
122 addr = (void __iomem *)DDR_WINDOW_CPU1_BASE;
123
124 for (i = 0, cs = 0; i < 4; i++) {
125 u32 base = readl(addr + DDR_BASE_CS_OFF(i));
126 u32 size = readl(addr + DDR_SIZE_CS_OFF(i));
127
128 /*
129 * Chip select enabled?
130 */
131 if (size & 1) {
132 struct mbus_dram_window *w;
133
134 w = &mv78xx0_mbus_dram_info.cs[cs++];
135 w->cs_index = i;
136 w->mbus_attr = 0xf & ~(1 << i);
137 w->base = base & 0xffff0000;
138 w->size = (size | 0x0000ffff) + 1;
139 }
140 }
141 mv78xx0_mbus_dram_info.num_cs = cs;
142}
143
144void __init mv78xx0_setup_pcie_io_win(int window, u32 base, u32 size,
145 int maj, int min)
146{
147 setup_cpu_win(window, base, size, TARGET_PCIE(maj),
148 ATTR_PCIE_IO(min), -1);
149}
150
151void __init mv78xx0_setup_pcie_mem_win(int window, u32 base, u32 size,
152 int maj, int min)
153{
154 setup_cpu_win(window, base, size, TARGET_PCIE(maj),
155 ATTR_PCIE_MEM(min), -1);
156}