Linux-2.6.12-rc2
[linux-3.10.git] / arch / arm / mach-sa1100 / hackkit.c
1 /*
2  * linux/arch/arm/mach-sa1100/hackkit.c
3  *
4  * Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
5  *
6  * This file contains all HackKit tweaks. Based on original work from
7  * Nicolas Pitre's assabet fixes
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as
11  * published by the Free Software Foundation.
12  *
13  */
14 #include <linux/init.h>
15 #include <linux/kernel.h>
16 #include <linux/sched.h>
17 #include <linux/tty.h>
18 #include <linux/module.h>
19 #include <linux/errno.h>
20 #include <linux/cpufreq.h>
21 #include <linux/serial_core.h>
22 #include <linux/mtd/mtd.h>
23 #include <linux/mtd/partitions.h>
24
25 #include <asm/hardware.h>
26 #include <asm/mach-types.h>
27 #include <asm/setup.h>
28 #include <asm/page.h>
29 #include <asm/pgtable.h>
30 #include <asm/irq.h>
31
32 #include <asm/mach/arch.h>
33 #include <asm/mach/flash.h>
34 #include <asm/mach/map.h>
35 #include <asm/mach/irq.h>
36 #include <asm/mach/serial_sa1100.h>
37
38 #include "generic.h"
39
40 /**********************************************************************
41  *  prototypes
42  */
43
44 /* init funcs */
45 static void __init hackkit_map_io(void);
46
47 static u_int hackkit_get_mctrl(struct uart_port *port);
48 static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl);
49 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
50
51 /**********************************************************************
52  *  global data
53  */
54
55 /**********************************************************************
56  *  static data
57  */
58
59 static struct map_desc hackkit_io_desc[] __initdata = {
60  /* virtual     physical    length      type */
61   { 0xe8000000, 0x00000000, 0x01000000, MT_DEVICE } /* Flash bank 0 */
62 };
63
64 static struct sa1100_port_fns hackkit_port_fns __initdata = {
65         .set_mctrl      = hackkit_set_mctrl,
66         .get_mctrl      = hackkit_get_mctrl,
67         .pm             = hackkit_uart_pm,
68 };
69
70 /**********************************************************************
71  *  Static functions
72  */
73
74 static void __init hackkit_map_io(void)
75 {
76         sa1100_map_io();
77         iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));
78
79         sa1100_register_uart_fns(&hackkit_port_fns);
80         sa1100_register_uart(0, 1);     /* com port */
81         sa1100_register_uart(1, 2);
82         sa1100_register_uart(2, 3);     /* radio module */
83
84         Ser1SDCR0 |= SDCR0_SUS;
85 }
86
87 /**
88  *      hackkit_uart_pm - powermgmt callback function for system 3 UART
89  *      @port: uart port structure
90  *      @state: pm state
91  *      @oldstate: old pm state
92  *
93  */
94 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
95 {
96         /* TODO: switch on/off uart in powersave mode */
97 }
98
99 /*
100  * Note! this can be called from IRQ context.
101  * FIXME: No modem ctrl lines yet.
102  */
103 static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
104 {
105 #if 0
106         if (port->mapbase == _Ser1UTCR0) {
107                 u_int set = 0, clear = 0;
108
109                 if (mctrl & TIOCM_RTS)
110                         set |= PT_CTRL2_RS1_RTS;
111                 else
112                         clear |= PT_CTRL2_RS1_RTS;
113
114                 if (mctrl & TIOCM_DTR)
115                         set |= PT_CTRL2_RS1_DTR;
116                 else
117                         clear |= PT_CTRL2_RS1_DTR;
118
119                 PTCTRL2_clear(clear);
120                 PTCTRL2_set(set);
121         }
122 #endif
123 }
124
125 static u_int hackkit_get_mctrl(struct uart_port *port)
126 {
127         u_int ret = 0;
128 #if 0
129         u_int irqsr = PT_IRQSR;
130
131         /* need 2 reads to read current value */
132         irqsr = PT_IRQSR;
133
134         /* TODO: check IRQ source register for modem/com
135          status lines and set them correctly. */
136 #endif
137
138         ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
139
140         return ret;
141 }
142
143 static struct mtd_partition hackkit_partitions[] = {
144         {
145                 .name           = "BLOB",
146                 .size           = 0x00040000,
147                 .offset         = 0x00000000,
148                 .mask_flags     = MTD_WRITEABLE,  /* force read-only */
149         }, {
150                 .name           = "config",
151                 .size           = 0x00040000,
152                 .offset         = MTDPART_OFS_APPEND,
153         }, {
154                 .name           = "kernel",
155                 .size           = 0x00100000,
156                 .offset         = MTDPART_OFS_APPEND,
157         }, {
158                 .name           = "initrd",
159                 .size           = 0x00180000,
160                 .offset         = MTDPART_OFS_APPEND,
161         }, {
162                 .name           = "rootfs",
163                 .size           = 0x700000,
164                 .offset         = MTDPART_OFS_APPEND,
165         }, {
166                 .name           = "data",
167                 .size           = MTDPART_SIZ_FULL,
168                 .offset         = MTDPART_OFS_APPEND,
169         }
170 };
171
172 static struct flash_platform_data hackkit_flash_data = {
173         .map_name       = "cfi_probe",
174         .parts          = hackkit_partitions,
175         .nr_parts       = ARRAY_SIZE(hackkit_partitions),
176 };
177
178 static struct resource hackkit_flash_resource = {
179         .start          = SA1100_CS0_PHYS,
180         .end            = SA1100_CS0_PHYS + SZ_32M,
181         .flags          = IORESOURCE_MEM,
182 };
183
184 static void __init hackkit_init(void)
185 {
186         sa11x0_set_flash_data(&hackkit_flash_data, &hackkit_flash_resource, 1);
187 }
188
189 /**********************************************************************
190  *  Exported Functions
191  */
192
193 MACHINE_START(HACKKIT, "HackKit Cpu Board")
194         BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
195         BOOT_PARAMS(0xc0000100)
196         MAPIO(hackkit_map_io)
197         INITIRQ(sa1100_init_irq)
198         .timer          = &sa1100_timer,
199         .init_machine   = hackkit_init,
200 MACHINE_END