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 <mach/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 { /* Flash bank 0 */
61 .virtual = 0xe8000000,
62 .pfn = __phys_to_pfn(0x00000000),
63 .length = 0x01000000,
64 .type = MT_DEVICE
65 },
66 };
67
68 static struct sa1100_port_fns hackkit_port_fns __initdata = {
69 .set_mctrl = hackkit_set_mctrl,
70 .get_mctrl = hackkit_get_mctrl,
71 .pm = hackkit_uart_pm,
72 };
73
74 /**********************************************************************
75 * Static functions
76 */
77
hackkit_map_io(void)78 static void __init hackkit_map_io(void)
79 {
80 sa1100_map_io();
81 iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));
82
83 sa1100_register_uart_fns(&hackkit_port_fns);
84 sa1100_register_uart(0, 1); /* com port */
85 sa1100_register_uart(1, 2);
86 sa1100_register_uart(2, 3); /* radio module */
87
88 Ser1SDCR0 |= SDCR0_SUS;
89 }
90
91 /**
92 * hackkit_uart_pm - powermgmt callback function for system 3 UART
93 * @port: uart port structure
94 * @state: pm state
95 * @oldstate: old pm state
96 *
97 */
hackkit_uart_pm(struct uart_port * port,u_int state,u_int oldstate)98 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
99 {
100 /* TODO: switch on/off uart in powersave mode */
101 }
102
103 /*
104 * Note! this can be called from IRQ context.
105 * FIXME: No modem ctrl lines yet.
106 */
hackkit_set_mctrl(struct uart_port * port,u_int mctrl)107 static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
108 {
109 #if 0
110 if (port->mapbase == _Ser1UTCR0) {
111 u_int set = 0, clear = 0;
112
113 if (mctrl & TIOCM_RTS)
114 set |= PT_CTRL2_RS1_RTS;
115 else
116 clear |= PT_CTRL2_RS1_RTS;
117
118 if (mctrl & TIOCM_DTR)
119 set |= PT_CTRL2_RS1_DTR;
120 else
121 clear |= PT_CTRL2_RS1_DTR;
122
123 PTCTRL2_clear(clear);
124 PTCTRL2_set(set);
125 }
126 #endif
127 }
128
hackkit_get_mctrl(struct uart_port * port)129 static u_int hackkit_get_mctrl(struct uart_port *port)
130 {
131 u_int ret = 0;
132 #if 0
133 u_int irqsr = PT_IRQSR;
134
135 /* need 2 reads to read current value */
136 irqsr = PT_IRQSR;
137
138 /* TODO: check IRQ source register for modem/com
139 status lines and set them correctly. */
140 #endif
141
142 ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
143
144 return ret;
145 }
146
147 static struct mtd_partition hackkit_partitions[] = {
148 {
149 .name = "BLOB",
150 .size = 0x00040000,
151 .offset = 0x00000000,
152 .mask_flags = MTD_WRITEABLE, /* force read-only */
153 }, {
154 .name = "config",
155 .size = 0x00040000,
156 .offset = MTDPART_OFS_APPEND,
157 }, {
158 .name = "kernel",
159 .size = 0x00100000,
160 .offset = MTDPART_OFS_APPEND,
161 }, {
162 .name = "initrd",
163 .size = 0x00180000,
164 .offset = MTDPART_OFS_APPEND,
165 }, {
166 .name = "rootfs",
167 .size = 0x700000,
168 .offset = MTDPART_OFS_APPEND,
169 }, {
170 .name = "data",
171 .size = MTDPART_SIZ_FULL,
172 .offset = MTDPART_OFS_APPEND,
173 }
174 };
175
176 static struct flash_platform_data hackkit_flash_data = {
177 .map_name = "cfi_probe",
178 .parts = hackkit_partitions,
179 .nr_parts = ARRAY_SIZE(hackkit_partitions),
180 };
181
182 static struct resource hackkit_flash_resource = {
183 .start = SA1100_CS0_PHYS,
184 .end = SA1100_CS0_PHYS + SZ_32M,
185 .flags = IORESOURCE_MEM,
186 };
187
hackkit_init(void)188 static void __init hackkit_init(void)
189 {
190 sa11x0_register_mtd(&hackkit_flash_data, &hackkit_flash_resource, 1);
191 }
192
193 /**********************************************************************
194 * Exported Functions
195 */
196
197 MACHINE_START(HACKKIT, "HackKit Cpu Board")
198 .atag_offset = 0x100,
199 .map_io = hackkit_map_io,
200 .init_irq = sa1100_init_irq,
201 .timer = &sa1100_timer,
202 .init_machine = hackkit_init,
203 .restart = sa11x0_restart,
204 MACHINE_END
205