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1da177e4 LT |
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> | |
d052d1be | 19 | #include <linux/platform_device.h> |
1da177e4 LT |
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 | ||
a09e64fb | 26 | #include <mach/hardware.h> |
1da177e4 LT |
27 | #include <asm/mach-types.h> |
28 | #include <asm/setup.h> | |
a09e64fb | 29 | #include <mach/irqs.h> |
1da177e4 LT |
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 | ||
a09e64fb | 37 | #include <mach/badge4.h> |
1da177e4 LT |
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 | ||
19851c58 EM |
54 | static struct sa1111_platform_data sa1111_info = { |
55 | .irq_base = IRQ_BOARD_END, | |
56 | }; | |
57 | ||
1da177e4 LT |
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, | |
19851c58 | 66 | .platform_data = &sa1111_info, |
1da177e4 LT |
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 | ||
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[] = { | |
bda03086 KE |
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 | } | |
1da177e4 LT |
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 | ||
132 | static int __init five_v_on_setup(char *ignore) | |
133 | { | |
bda03086 | 134 | five_v_on = 1; |
1da177e4 LT |
135 | return 1; |
136 | } | |
137 | __setup("five_v_on", five_v_on_setup); | |
138 | ||
139 | ||
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 | ||
bda03086 KE |
179 | /* 5V supply rail. */ |
180 | GPCR = BADGE4_GPIO_PCMEN5V; /* initially off */ | |
181 | GPDR |= BADGE4_GPIO_PCMEN5V; | |
1da177e4 LT |
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", | |
bda03086 KE |
186 | !!(GPLR & BADGE4_GPIO_SDTYP1), |
187 | !!(GPLR & BADGE4_GPIO_SDTYP0)); | |
1da177e4 LT |
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 | |
bda03086 KE |
213 | "%s: SA-1111 initialization failed (%d)\n", |
214 | __func__, ret); | |
1da177e4 LT |
215 | |
216 | ||
217 | /* maybe turn on 5v0 from the start */ | |
218 | badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on); | |
219 | ||
7a5b4e16 | 220 | sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1); |
1da177e4 LT |
221 | |
222 | return 0; | |
223 | } | |
224 | ||
225 | arch_initcall(badge4_init); | |
226 | ||
227 | ||
228 | static unsigned badge4_5V_bitmap = 0; | |
229 | ||
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 */ | |
8e86f427 | 248 | printk(KERN_INFO "%s: enabling 5V supply rail\n", __func__); |
1da177e4 LT |
249 | GPSR = BADGE4_GPIO_PCMEN5V; |
250 | } else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) { | |
251 | /* was on, now off */ | |
8e86f427 | 252 | printk(KERN_INFO "%s: disabling 5V supply rail\n", __func__); |
1da177e4 LT |
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 = { | |
bda03086 | 262 | { /* SRAM bank 1 */ |
92519d82 DS |
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 | } | |
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278 | }; |
279 | ||
280 | static void | |
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 | ||
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") | |
e9dea0c6 RK |
305 | .boot_params = 0xc0000100, |
306 | .map_io = badge4_map_io, | |
307 | .init_irq = sa1100_init_irq, | |
1da177e4 LT |
308 | .timer = &sa1100_timer, |
309 | MACHINE_END |