1 /*
2 * linux/arch/arm/mach-sa1100/badge4.c
3 *
4 * BadgePAD 4 specific initialization
5 *
6 * Tim Connors <connors@hpl.hp.com>
7 * Christopher Hoover <ch@hpl.hp.com>
8 *
9 * Copyright (C) 2002 Hewlett-Packard Company
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14 *
15 */
16 #include <linux/module.h>
17 #include <linux/init.h>
18 #include <linux/kernel.h>
19 #include <linux/platform_device.h>
20 #include <linux/delay.h>
21 #include <linux/tty.h>
22 #include <linux/mtd/mtd.h>
23 #include <linux/mtd/partitions.h>
24 #include <linux/errno.h>
25
26 #include <mach/hardware.h>
27 #include <asm/mach-types.h>
28 #include <asm/setup.h>
29 #include <mach/irqs.h>
30
31 #include <asm/mach/arch.h>
32 #include <asm/mach/flash.h>
33 #include <asm/mach/map.h>
34 #include <asm/hardware/sa1111.h>
35 #include <asm/mach/serial_sa1100.h>
36
37 #include <mach/badge4.h>
38
39 #include "generic.h"
40
41 static struct resource sa1111_resources[] = {
42 [0] = {
43 .start = BADGE4_SA1111_BASE,
44 .end = BADGE4_SA1111_BASE + 0x00001fff,
45 .flags = IORESOURCE_MEM,
46 },
47 [1] = {
48 .start = BADGE4_IRQ_GPIO_SA1111,
49 .end = BADGE4_IRQ_GPIO_SA1111,
50 .flags = IORESOURCE_IRQ,
51 },
52 };
53
54 static struct sa1111_platform_data sa1111_info = {
55 .irq_base = IRQ_BOARD_END,
56 };
57
58 static u64 sa1111_dmamask = 0xffffffffUL;
59
60 static struct platform_device sa1111_device = {
61 .name = "sa1111",
62 .id = 0,
63 .dev = {
64 .dma_mask = &sa1111_dmamask,
65 .coherent_dma_mask = 0xffffffff,
66 .platform_data = &sa1111_info,
67 },
68 .num_resources = ARRAY_SIZE(sa1111_resources),
69 .resource = sa1111_resources,
70 };
71
72 static struct platform_device *devices[] __initdata = {
73 &sa1111_device,
74 };
75
badge4_sa1111_init(void)76 static int __init badge4_sa1111_init(void)
77 {
78 /*
79 * Ensure that the memory bus request/grant signals are setup,
80 * and the grant is held in its inactive state
81 */
82 sa1110_mb_disable();
83
84 /*
85 * Probe for SA1111.
86 */
87 return platform_add_devices(devices, ARRAY_SIZE(devices));
88 }
89
90
91 /*
92 * 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit)
93 * Eight 4 KiW Parameter Bottom Blocks (64 KiB)
94 * Sixty-three 32 KiW Main Blocks (4032 Ki b)
95 *
96 * <or>
97 *
98 * 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit)
99 * Eight 4 KiW Parameter Bottom Blocks (64 KiB)
100 * One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b)
101 */
102 static struct mtd_partition badge4_partitions[] = {
103 {
104 .name = "BLOB boot loader",
105 .offset = 0,
106 .size = 0x0000A000
107 }, {
108 .name = "params",
109 .offset = MTDPART_OFS_APPEND,
110 .size = 0x00006000
111 }, {
112 .name = "root",
113 .offset = MTDPART_OFS_APPEND,
114 .size = MTDPART_SIZ_FULL
115 }
116 };
117
118 static struct flash_platform_data badge4_flash_data = {
119 .map_name = "cfi_probe",
120 .parts = badge4_partitions,
121 .nr_parts = ARRAY_SIZE(badge4_partitions),
122 };
123
124 static struct resource badge4_flash_resource = {
125 .start = SA1100_CS0_PHYS,
126 .end = SA1100_CS0_PHYS + SZ_64M - 1,
127 .flags = IORESOURCE_MEM,
128 };
129
130 static int five_v_on __initdata = 0;
131
five_v_on_setup(char * ignore)132 static int __init five_v_on_setup(char *ignore)
133 {
134 five_v_on = 1;
135 return 1;
136 }
137 __setup("five_v_on", five_v_on_setup);
138
139
badge4_init(void)140 static int __init badge4_init(void)
141 {
142 int ret;
143
144 if (!machine_is_badge4())
145 return -ENODEV;
146
147 /* LCD */
148 GPCR = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
149 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
150 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
151 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
152 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
153 BADGE4_GPIO_GPC_VID);
154 GPDR &= ~BADGE4_GPIO_INT_VID;
155 GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
156 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
157 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
158 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
159 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
160 BADGE4_GPIO_GPC_VID);
161
162 /* SDRAM SPD i2c */
163 GPCR = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
164 GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
165
166 /* uart */
167 GPCR = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
168 GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
169
170 /* CPLD muxsel0 input for mux/adc chip select */
171 GPCR = BADGE4_GPIO_MUXSEL0;
172 GPDR |= BADGE4_GPIO_MUXSEL0;
173
174 /* test points: J5, J6 as inputs, J7 outputs */
175 GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6);
176 GPCR = BADGE4_GPIO_TESTPT_J7;
177 GPDR |= BADGE4_GPIO_TESTPT_J7;
178
179 /* 5V supply rail. */
180 GPCR = BADGE4_GPIO_PCMEN5V; /* initially off */
181 GPDR |= BADGE4_GPIO_PCMEN5V;
182
183 /* CPLD sdram type inputs; set up by blob */
184 //GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0);
185 printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n",
186 !!(GPLR & BADGE4_GPIO_SDTYP1),
187 !!(GPLR & BADGE4_GPIO_SDTYP0));
188
189 /* SA1111 reset pin; set up by blob */
190 //GPSR = BADGE4_GPIO_SA1111_NRST;
191 //GPDR |= BADGE4_GPIO_SA1111_NRST;
192
193
194 /* power management cruft */
195 PGSR = 0;
196 PWER = 0;
197 PCFR = 0;
198 PSDR = 0;
199
200 PWER |= PWER_GPIO26; /* wake up on an edge from TESTPT_J5 */
201 PWER |= PWER_RTC; /* wake up if rtc fires */
202
203 /* drive sa1111_nrst during sleep */
204 PGSR |= BADGE4_GPIO_SA1111_NRST;
205 /* drive CPLD as is during sleep */
206 PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1));
207
208
209 /* Now bring up the SA-1111. */
210 ret = badge4_sa1111_init();
211 if (ret < 0)
212 printk(KERN_ERR
213 "%s: SA-1111 initialization failed (%d)\n",
214 __func__, ret);
215
216
217 /* maybe turn on 5v0 from the start */
218 badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on);
219
220 sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1);
221
222 return 0;
223 }
224
225 arch_initcall(badge4_init);
226
227
228 static unsigned badge4_5V_bitmap = 0;
229
badge4_set_5V(unsigned subsystem,int on)230 void badge4_set_5V(unsigned subsystem, int on)
231 {
232 unsigned long flags;
233 unsigned old_5V_bitmap;
234
235 local_irq_save(flags);
236
237 old_5V_bitmap = badge4_5V_bitmap;
238
239 if (on) {
240 badge4_5V_bitmap |= subsystem;
241 } else {
242 badge4_5V_bitmap &= ~subsystem;
243 }
244
245 /* detect on->off and off->on transitions */
246 if ((!old_5V_bitmap) && (badge4_5V_bitmap)) {
247 /* was off, now on */
248 printk(KERN_INFO "%s: enabling 5V supply rail\n", __func__);
249 GPSR = BADGE4_GPIO_PCMEN5V;
250 } else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) {
251 /* was on, now off */
252 printk(KERN_INFO "%s: disabling 5V supply rail\n", __func__);
253 GPCR = BADGE4_GPIO_PCMEN5V;
254 }
255
256 local_irq_restore(flags);
257 }
258 EXPORT_SYMBOL(badge4_set_5V);
259
260
261 static struct map_desc badge4_io_desc[] __initdata = {
262 { /* SRAM bank 1 */
263 .virtual = 0xf1000000,
264 .pfn = __phys_to_pfn(0x08000000),
265 .length = 0x00100000,
266 .type = MT_DEVICE
267 }, { /* SRAM bank 2 */
268 .virtual = 0xf2000000,
269 .pfn = __phys_to_pfn(0x10000000),
270 .length = 0x00100000,
271 .type = MT_DEVICE
272 }, { /* SA-1111 */
273 .virtual = 0xf4000000,
274 .pfn = __phys_to_pfn(0x48000000),
275 .length = 0x00100000,
276 .type = MT_DEVICE
277 }
278 };
279
280 static void
badge4_uart_pm(struct uart_port * port,u_int state,u_int oldstate)281 badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
282 {
283 if (!state) {
284 Ser1SDCR0 |= SDCR0_UART;
285 }
286 }
287
288 static struct sa1100_port_fns badge4_port_fns __initdata = {
289 //.get_mctrl = badge4_get_mctrl,
290 //.set_mctrl = badge4_set_mctrl,
291 .pm = badge4_uart_pm,
292 };
293
badge4_map_io(void)294 static void __init badge4_map_io(void)
295 {
296 sa1100_map_io();
297 iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));
298
299 sa1100_register_uart_fns(&badge4_port_fns);
300 sa1100_register_uart(0, 3);
301 sa1100_register_uart(1, 1);
302 }
303
304 MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
305 .boot_params = 0xc0000100,
306 .map_io = badge4_map_io,
307 .init_irq = sa1100_init_irq,
308 .timer = &sa1100_timer,
309 MACHINE_END
310