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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-ixp4xx/gtwx5715-setup.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/arm/mach-ixp4xx/gtwx5715-setup.c')
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diff --git a/arch/arm/mach-ixp4xx/gtwx5715-setup.c b/arch/arm/mach-ixp4xx/gtwx5715-setup.c
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1/*
2 * arch/arm/mach-ixp4xx/gtwx5715-setup.c
3 *
4 * Gemtek GTWX5715 (Linksys WRV54G) board settup
5 *
6 * Copyright (C) 2004 George T. Joseph
7 * Derived from Coyote
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 *
23 */
24
25#include <linux/init.h>
26#include <linux/device.h>
27#include <linux/serial.h>
28#include <linux/tty.h>
29#include <linux/serial_8250.h>
30
31#include <asm/types.h>
32#include <asm/setup.h>
33#include <asm/memory.h>
34#include <asm/hardware.h>
35#include <asm/irq.h>
36#include <asm/mach-types.h>
37#include <asm/mach/arch.h>
38#include <asm/mach/flash.h>
39#include <asm/arch/gtwx5715.h>
40
41/*
42 * Xscale UART registers are 32 bits wide with only the least
43 * significant 8 bits having any meaning. From a configuration
44 * perspective, this means 2 things...
45 *
46 * Setting .regshift = 2 so that the standard 16550 registers
47 * line up on every 4th byte.
48 *
49 * Shifting the register start virtual address +3 bytes when
50 * compiled big-endian. Since register writes are done on a
51 * single byte basis, if the shift isn't done the driver will
52 * write the value into the most significant byte of the register,
53 * which is ignored, instead of the least significant.
54 */
55
56#ifdef __ARMEB__
57#define REG_OFFSET 3
58#else
59#define REG_OFFSET 0
60#endif
61
62/*
63 * Only the second or "console" uart is connected on the gtwx5715.
64 */
65
66static struct resource gtwx5715_uart_resources[] = {
67 {
68 .start = IXP4XX_UART2_BASE_PHYS,
69 .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
70 .flags = IORESOURCE_MEM,
71 },
72 {
73 .start = IRQ_IXP4XX_UART2,
74 .end = IRQ_IXP4XX_UART2,
75 .flags = IORESOURCE_IRQ,
76 },
77 { },
78};
79
80
81static struct plat_serial8250_port gtwx5715_uart_platform_data[] = {
82 {
83 .mapbase = IXP4XX_UART2_BASE_PHYS,
84 .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
85 .irq = IRQ_IXP4XX_UART2,
86 .flags = UPF_BOOT_AUTOCONF,
87 .iotype = UPIO_MEM,
88 .regshift = 2,
89 .uartclk = IXP4XX_UART_XTAL,
90 },
91 { },
92};
93
94static struct platform_device gtwx5715_uart_device = {
95 .name = "serial8250",
96 .id = 0,
97 .dev = {
98 .platform_data = gtwx5715_uart_platform_data,
99 },
100 .num_resources = 2,
101 .resource = gtwx5715_uart_resources,
102};
103
104
105void __init gtwx5715_map_io(void)
106{
107 ixp4xx_map_io();
108}
109
110static struct flash_platform_data gtwx5715_flash_data = {
111 .map_name = "cfi_probe",
112 .width = 2,
113};
114
115static struct resource gtwx5715_flash_resource = {
116 .start = GTWX5715_FLASH_BASE,
117 .end = GTWX5715_FLASH_BASE + GTWX5715_FLASH_SIZE,
118 .flags = IORESOURCE_MEM,
119};
120
121static struct platform_device gtwx5715_flash = {
122 .name = "IXP4XX-Flash",
123 .id = 0,
124 .dev = {
125 .platform_data = &gtwx5715_flash_data,
126 },
127 .num_resources = 1,
128 .resource = &gtwx5715_flash_resource,
129};
130
131static struct platform_device *gtwx5715_devices[] __initdata = {
132 &gtwx5715_uart_device,
133 &gtwx5715_flash,
134};
135
136static void __init gtwx5715_init(void)
137{
138 platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices));
139}
140
141
142MACHINE_START(GTWX5715, "Gemtek GTWX5715 (Linksys WRV54G)")
143 MAINTAINER("George Joseph")
144 BOOT_MEM(PHYS_OFFSET, IXP4XX_UART2_BASE_PHYS,
145 IXP4XX_UART2_BASE_VIRT)
146 MAPIO(gtwx5715_map_io)
147 INITIRQ(ixp4xx_init_irq)
148 .timer = &ixp4xx_timer,
149 BOOT_PARAMS(0x0100)
150 INIT_MACHINE(gtwx5715_init)
151MACHINE_END
152
153