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8ad68bbf CM |
1 | /* |
2 | * linux/arch/arm/mach-realview/core.c | |
3 | * | |
4 | * Copyright (C) 1999 - 2003 ARM Limited | |
5 | * Copyright (C) 2000 Deep Blue Solutions Ltd | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
8ad68bbf | 21 | #include <linux/init.h> |
1be7228d | 22 | #include <linux/platform_device.h> |
8ad68bbf CM |
23 | #include <linux/dma-mapping.h> |
24 | #include <linux/sysdev.h> | |
25 | #include <linux/interrupt.h> | |
a62c80e5 RK |
26 | #include <linux/amba/bus.h> |
27 | #include <linux/amba/clcd.h> | |
fced80c7 | 28 | #include <linux/io.h> |
c5142e84 | 29 | #include <linux/smsc911x.h> |
6be62ba2 | 30 | #include <linux/ata_platform.h> |
6ef297f8 | 31 | #include <linux/amba/mmci.h> |
5a0e3ad6 | 32 | #include <linux/gfp.h> |
6d803ba7 | 33 | #include <linux/clkdev.h> |
8ad68bbf CM |
34 | |
35 | #include <asm/system.h> | |
a09e64fb | 36 | #include <mach/hardware.h> |
8ad68bbf CM |
37 | #include <asm/irq.h> |
38 | #include <asm/leds.h> | |
68c3d935 | 39 | #include <asm/mach-types.h> |
8ad68bbf | 40 | #include <asm/hardware/arm_timer.h> |
c5a0adb5 | 41 | #include <asm/hardware/icst.h> |
8ad68bbf CM |
42 | |
43 | #include <asm/mach/arch.h> | |
44 | #include <asm/mach/flash.h> | |
45 | #include <asm/mach/irq.h> | |
8ad68bbf | 46 | #include <asm/mach/map.h> |
8ad68bbf CM |
47 | |
48 | #include <asm/hardware/gic.h> | |
49 | ||
ee8c9571 CM |
50 | #include <mach/platform.h> |
51 | #include <mach/irqs.h> | |
8a9618f5 | 52 | #include <asm/hardware/timer-sp.h> |
ee8c9571 | 53 | |
3cb5ee49 | 54 | #include <plat/clcd.h> |
1da0c89c RK |
55 | #include <plat/sched_clock.h> |
56 | ||
8ad68bbf | 57 | #include "core.h" |
8ad68bbf | 58 | |
c97c5aa8 CM |
59 | #ifdef CONFIG_ZONE_DMA |
60 | /* | |
61 | * Adjust the zones if there are restrictions for DMA access. | |
62 | */ | |
b65b4781 | 63 | void __init realview_adjust_zones(unsigned long *size, unsigned long *hole) |
c97c5aa8 CM |
64 | { |
65 | unsigned long dma_size = SZ_256M >> PAGE_SHIFT; | |
66 | ||
b65b4781 | 67 | if (!machine_is_realview_pbx() || size[0] <= dma_size) |
c97c5aa8 CM |
68 | return; |
69 | ||
70 | size[ZONE_NORMAL] = size[0] - dma_size; | |
71 | size[ZONE_DMA] = dma_size; | |
72 | hole[ZONE_NORMAL] = hole[0]; | |
73 | hole[ZONE_DMA] = 0; | |
74 | } | |
75 | #endif | |
76 | ||
8ad68bbf CM |
77 | |
78 | #define REALVIEW_FLASHCTRL (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_FLASH_OFFSET) | |
79 | ||
80 | static int realview_flash_init(void) | |
81 | { | |
82 | u32 val; | |
83 | ||
84 | val = __raw_readl(REALVIEW_FLASHCTRL); | |
85 | val &= ~REALVIEW_FLASHPROG_FLVPPEN; | |
86 | __raw_writel(val, REALVIEW_FLASHCTRL); | |
87 | ||
88 | return 0; | |
89 | } | |
90 | ||
91 | static void realview_flash_exit(void) | |
92 | { | |
93 | u32 val; | |
94 | ||
95 | val = __raw_readl(REALVIEW_FLASHCTRL); | |
96 | val &= ~REALVIEW_FLASHPROG_FLVPPEN; | |
97 | __raw_writel(val, REALVIEW_FLASHCTRL); | |
98 | } | |
99 | ||
100 | static void realview_flash_set_vpp(int on) | |
101 | { | |
102 | u32 val; | |
103 | ||
104 | val = __raw_readl(REALVIEW_FLASHCTRL); | |
105 | if (on) | |
106 | val |= REALVIEW_FLASHPROG_FLVPPEN; | |
107 | else | |
108 | val &= ~REALVIEW_FLASHPROG_FLVPPEN; | |
109 | __raw_writel(val, REALVIEW_FLASHCTRL); | |
110 | } | |
111 | ||
112 | static struct flash_platform_data realview_flash_data = { | |
113 | .map_name = "cfi_probe", | |
114 | .width = 4, | |
115 | .init = realview_flash_init, | |
116 | .exit = realview_flash_exit, | |
117 | .set_vpp = realview_flash_set_vpp, | |
118 | }; | |
119 | ||
8ad68bbf CM |
120 | struct platform_device realview_flash_device = { |
121 | .name = "armflash", | |
122 | .id = 0, | |
123 | .dev = { | |
124 | .platform_data = &realview_flash_data, | |
125 | }, | |
8ad68bbf CM |
126 | }; |
127 | ||
a44ddfd5 CM |
128 | int realview_flash_register(struct resource *res, u32 num) |
129 | { | |
130 | realview_flash_device.resource = res; | |
131 | realview_flash_device.num_resources = num; | |
132 | return platform_device_register(&realview_flash_device); | |
133 | } | |
134 | ||
c5142e84 SG |
135 | static struct smsc911x_platform_config smsc911x_config = { |
136 | .flags = SMSC911X_USE_32BIT, | |
137 | .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH, | |
138 | .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL, | |
139 | .phy_interface = PHY_INTERFACE_MODE_MII, | |
0a5b2f6b CM |
140 | }; |
141 | ||
0a381330 | 142 | static struct platform_device realview_eth_device = { |
c5142e84 | 143 | .name = "smsc911x", |
0a381330 CM |
144 | .id = 0, |
145 | .num_resources = 2, | |
146 | }; | |
147 | ||
148 | int realview_eth_register(const char *name, struct resource *res) | |
149 | { | |
150 | if (name) | |
151 | realview_eth_device.name = name; | |
152 | realview_eth_device.resource = res; | |
c5142e84 SG |
153 | if (strcmp(realview_eth_device.name, "smsc911x") == 0) |
154 | realview_eth_device.dev.platform_data = &smsc911x_config; | |
0a381330 CM |
155 | |
156 | return platform_device_register(&realview_eth_device); | |
7db21712 CM |
157 | } |
158 | ||
159 | struct platform_device realview_usb_device = { | |
160 | .name = "isp1760", | |
161 | .num_resources = 2, | |
162 | }; | |
163 | ||
164 | int realview_usb_register(struct resource *res) | |
165 | { | |
166 | realview_usb_device.resource = res; | |
167 | return platform_device_register(&realview_usb_device); | |
0a381330 CM |
168 | } |
169 | ||
6be62ba2 CM |
170 | static struct pata_platform_info pata_platform_data = { |
171 | .ioport_shift = 1, | |
172 | }; | |
173 | ||
174 | static struct resource pata_resources[] = { | |
175 | [0] = { | |
176 | .start = REALVIEW_CF_BASE, | |
177 | .end = REALVIEW_CF_BASE + 0xff, | |
178 | .flags = IORESOURCE_MEM, | |
179 | }, | |
180 | [1] = { | |
181 | .start = REALVIEW_CF_BASE + 0x100, | |
182 | .end = REALVIEW_CF_BASE + SZ_4K - 1, | |
183 | .flags = IORESOURCE_MEM, | |
184 | }, | |
185 | }; | |
186 | ||
187 | struct platform_device realview_cf_device = { | |
188 | .name = "pata_platform", | |
189 | .id = -1, | |
190 | .num_resources = ARRAY_SIZE(pata_resources), | |
191 | .resource = pata_resources, | |
192 | .dev = { | |
193 | .platform_data = &pata_platform_data, | |
194 | }, | |
195 | }; | |
196 | ||
6b65cd74 RK |
197 | static struct resource realview_i2c_resource = { |
198 | .start = REALVIEW_I2C_BASE, | |
199 | .end = REALVIEW_I2C_BASE + SZ_4K - 1, | |
200 | .flags = IORESOURCE_MEM, | |
201 | }; | |
202 | ||
203 | struct platform_device realview_i2c_device = { | |
204 | .name = "versatile-i2c", | |
533ad5e6 | 205 | .id = 0, |
6b65cd74 RK |
206 | .num_resources = 1, |
207 | .resource = &realview_i2c_resource, | |
208 | }; | |
209 | ||
533ad5e6 CM |
210 | static struct i2c_board_info realview_i2c_board_info[] = { |
211 | { | |
64e8be6e | 212 | I2C_BOARD_INFO("ds1338", 0xd0 >> 1), |
533ad5e6 CM |
213 | }, |
214 | }; | |
215 | ||
216 | static int __init realview_i2c_init(void) | |
217 | { | |
218 | return i2c_register_board_info(0, realview_i2c_board_info, | |
219 | ARRAY_SIZE(realview_i2c_board_info)); | |
220 | } | |
221 | arch_initcall(realview_i2c_init); | |
222 | ||
8ad68bbf CM |
223 | #define REALVIEW_SYSMCI (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_MCI_OFFSET) |
224 | ||
98b0979f RK |
225 | /* |
226 | * This is only used if GPIOLIB support is disabled | |
227 | */ | |
8ad68bbf CM |
228 | static unsigned int realview_mmc_status(struct device *dev) |
229 | { | |
230 | struct amba_device *adev = container_of(dev, struct amba_device, dev); | |
231 | u32 mask; | |
232 | ||
48f1d5a3 LW |
233 | if (machine_is_realview_pb1176()) { |
234 | static bool inserted = false; | |
235 | ||
236 | /* | |
237 | * The PB1176 does not have the status register, | |
238 | * assume it is inserted at startup, then invert | |
239 | * for each call so card insertion/removal will | |
240 | * be detected anyway. This will not be called if | |
241 | * GPIO on PL061 is active, which is the proper | |
242 | * way to do this on the PB1176. | |
243 | */ | |
244 | inserted = !inserted; | |
245 | return inserted ? 0 : 1; | |
246 | } | |
247 | ||
8ad68bbf CM |
248 | if (adev->res.start == REALVIEW_MMCI0_BASE) |
249 | mask = 1; | |
250 | else | |
251 | mask = 2; | |
252 | ||
74bc8093 | 253 | return readl(REALVIEW_SYSMCI) & mask; |
8ad68bbf CM |
254 | } |
255 | ||
6ef297f8 | 256 | struct mmci_platform_data realview_mmc0_plat_data = { |
8ad68bbf CM |
257 | .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, |
258 | .status = realview_mmc_status, | |
98b0979f RK |
259 | .gpio_wp = 17, |
260 | .gpio_cd = 16, | |
29719445 | 261 | .cd_invert = true, |
8ad68bbf CM |
262 | }; |
263 | ||
6ef297f8 | 264 | struct mmci_platform_data realview_mmc1_plat_data = { |
8ad68bbf CM |
265 | .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, |
266 | .status = realview_mmc_status, | |
98b0979f RK |
267 | .gpio_wp = 19, |
268 | .gpio_cd = 18, | |
29719445 | 269 | .cd_invert = true, |
8ad68bbf CM |
270 | }; |
271 | ||
272 | /* | |
273 | * Clock handling | |
274 | */ | |
39c0cb02 | 275 | static const struct icst_params realview_oscvco_params = { |
64fceb1d | 276 | .ref = 24000000, |
4de2edbd | 277 | .vco_max = ICST307_VCO_MAX, |
e73a46a3 | 278 | .vco_min = ICST307_VCO_MIN, |
8ad68bbf CM |
279 | .vd_min = 4 + 8, |
280 | .vd_max = 511 + 8, | |
281 | .rd_min = 1 + 2, | |
282 | .rd_max = 127 + 2, | |
232eaf7f RK |
283 | .s2div = icst307_s2div, |
284 | .idx2s = icst307_idx2s, | |
8ad68bbf CM |
285 | }; |
286 | ||
39c0cb02 | 287 | static void realview_oscvco_set(struct clk *clk, struct icst_vco vco) |
8ad68bbf CM |
288 | { |
289 | void __iomem *sys_lock = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_LOCK_OFFSET; | |
8ad68bbf CM |
290 | u32 val; |
291 | ||
d1914c7e | 292 | val = readl(clk->vcoreg) & ~0x7ffff; |
8ad68bbf CM |
293 | val |= vco.v | (vco.r << 9) | (vco.s << 16); |
294 | ||
295 | writel(0xa05f, sys_lock); | |
d1914c7e | 296 | writel(val, clk->vcoreg); |
8ad68bbf CM |
297 | writel(0, sys_lock); |
298 | } | |
299 | ||
9bf5b2ef RK |
300 | static const struct clk_ops oscvco_clk_ops = { |
301 | .round = icst_clk_round, | |
302 | .set = icst_clk_set, | |
303 | .setvco = realview_oscvco_set, | |
304 | }; | |
305 | ||
cf30fb4a | 306 | static struct clk oscvco_clk = { |
9bf5b2ef | 307 | .ops = &oscvco_clk_ops, |
8ad68bbf | 308 | .params = &realview_oscvco_params, |
8ad68bbf CM |
309 | }; |
310 | ||
cf30fb4a RK |
311 | /* |
312 | * These are fixed clocks. | |
313 | */ | |
314 | static struct clk ref24_clk = { | |
315 | .rate = 24000000, | |
316 | }; | |
317 | ||
7ff550de RK |
318 | static struct clk sp804_clk = { |
319 | .rate = 1000000, | |
320 | }; | |
321 | ||
3126c7bc RK |
322 | static struct clk dummy_apb_pclk; |
323 | ||
cf30fb4a | 324 | static struct clk_lookup lookups[] = { |
3126c7bc RK |
325 | { /* Bus clock */ |
326 | .con_id = "apb_pclk", | |
327 | .clk = &dummy_apb_pclk, | |
328 | }, { /* UART0 */ | |
4321532c | 329 | .dev_id = "dev:uart0", |
cf30fb4a RK |
330 | .clk = &ref24_clk, |
331 | }, { /* UART1 */ | |
4321532c | 332 | .dev_id = "dev:uart1", |
cf30fb4a RK |
333 | .clk = &ref24_clk, |
334 | }, { /* UART2 */ | |
4321532c | 335 | .dev_id = "dev:uart2", |
cf30fb4a RK |
336 | .clk = &ref24_clk, |
337 | }, { /* UART3 */ | |
4321532c | 338 | .dev_id = "fpga:uart3", |
cf30fb4a | 339 | .clk = &ref24_clk, |
48f1d5a3 LW |
340 | }, { /* UART3 is on the dev chip in PB1176 */ |
341 | .dev_id = "dev:uart3", | |
342 | .clk = &ref24_clk, | |
343 | }, { /* UART4 only exists in PB1176 */ | |
344 | .dev_id = "fpga:uart4", | |
345 | .clk = &ref24_clk, | |
cf30fb4a | 346 | }, { /* KMI0 */ |
4321532c | 347 | .dev_id = "fpga:kmi0", |
cf30fb4a RK |
348 | .clk = &ref24_clk, |
349 | }, { /* KMI1 */ | |
4321532c | 350 | .dev_id = "fpga:kmi1", |
cf30fb4a RK |
351 | .clk = &ref24_clk, |
352 | }, { /* MMC0 */ | |
4321532c | 353 | .dev_id = "fpga:mmc0", |
cf30fb4a | 354 | .clk = &ref24_clk, |
48f1d5a3 | 355 | }, { /* CLCD is in the PB1176 and EB DevChip */ |
4321532c | 356 | .dev_id = "dev:clcd", |
cf30fb4a RK |
357 | .clk = &oscvco_clk, |
358 | }, { /* PB:CLCD */ | |
4321532c | 359 | .dev_id = "issp:clcd", |
cf30fb4a | 360 | .clk = &oscvco_clk, |
d6ada860 LW |
361 | }, { /* SSP */ |
362 | .dev_id = "dev:ssp0", | |
363 | .clk = &ref24_clk, | |
7ff550de RK |
364 | }, { /* SP804 timers */ |
365 | .dev_id = "sp804", | |
366 | .clk = &sp804_clk, | |
367 | }, | |
cf30fb4a RK |
368 | }; |
369 | ||
631e55f9 | 370 | void __init realview_init_early(void) |
cf30fb4a | 371 | { |
631e55f9 RK |
372 | void __iomem *sys = __io_address(REALVIEW_SYS_BASE); |
373 | ||
d1914c7e | 374 | if (machine_is_realview_pb1176()) |
631e55f9 | 375 | oscvco_clk.vcoreg = sys + REALVIEW_SYS_OSC0_OFFSET; |
d1914c7e | 376 | else |
631e55f9 | 377 | oscvco_clk.vcoreg = sys + REALVIEW_SYS_OSC4_OFFSET; |
d1914c7e | 378 | |
0a0300dc | 379 | clkdev_add_table(lookups, ARRAY_SIZE(lookups)); |
d1914c7e | 380 | |
631e55f9 | 381 | versatile_sched_clock_init(sys + REALVIEW_SYS_24MHz_OFFSET, 24000000); |
cf30fb4a | 382 | } |
cf30fb4a | 383 | |
8ad68bbf CM |
384 | /* |
385 | * CLCD support. | |
386 | */ | |
8ad68bbf CM |
387 | #define SYS_CLCD_NLCDIOON (1 << 2) |
388 | #define SYS_CLCD_VDDPOSSWITCH (1 << 3) | |
389 | #define SYS_CLCD_PWR3V5SWITCH (1 << 4) | |
390 | #define SYS_CLCD_ID_MASK (0x1f << 8) | |
391 | #define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8) | |
392 | #define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8) | |
393 | #define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8) | |
394 | #define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8) | |
395 | #define SYS_CLCD_ID_VGA (0x1f << 8) | |
396 | ||
8ad68bbf CM |
397 | /* |
398 | * Disable all display connectors on the interface module. | |
399 | */ | |
400 | static void realview_clcd_disable(struct clcd_fb *fb) | |
401 | { | |
402 | void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET; | |
403 | u32 val; | |
404 | ||
405 | val = readl(sys_clcd); | |
406 | val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH; | |
407 | writel(val, sys_clcd); | |
408 | } | |
409 | ||
410 | /* | |
411 | * Enable the relevant connector on the interface module. | |
412 | */ | |
413 | static void realview_clcd_enable(struct clcd_fb *fb) | |
414 | { | |
415 | void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET; | |
416 | u32 val; | |
417 | ||
8ad68bbf | 418 | /* |
9e7714d0 | 419 | * Enable the PSUs |
8ad68bbf | 420 | */ |
9e7714d0 | 421 | val = readl(sys_clcd); |
8ad68bbf CM |
422 | val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH; |
423 | writel(val, sys_clcd); | |
424 | } | |
425 | ||
3cb5ee49 RK |
426 | /* |
427 | * Detect which LCD panel is connected, and return the appropriate | |
428 | * clcd_panel structure. Note: we do not have any information on | |
429 | * the required timings for the 8.4in panel, so we presently assume | |
430 | * VGA timings. | |
431 | */ | |
8ad68bbf CM |
432 | static int realview_clcd_setup(struct clcd_fb *fb) |
433 | { | |
3cb5ee49 RK |
434 | void __iomem *sys_clcd = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_CLCD_OFFSET; |
435 | const char *panel_name, *vga_panel_name; | |
c34a1025 | 436 | unsigned long framesize; |
3cb5ee49 | 437 | u32 val; |
8ad68bbf | 438 | |
3cb5ee49 | 439 | if (machine_is_realview_eb()) { |
c34a1025 CT |
440 | /* VGA, 16bpp */ |
441 | framesize = 640 * 480 * 2; | |
3cb5ee49 RK |
442 | vga_panel_name = "VGA"; |
443 | } else { | |
c34a1025 CT |
444 | /* XVGA, 16bpp */ |
445 | framesize = 1024 * 768 * 2; | |
3cb5ee49 | 446 | vga_panel_name = "XVGA"; |
8ad68bbf CM |
447 | } |
448 | ||
3cb5ee49 RK |
449 | val = readl(sys_clcd) & SYS_CLCD_ID_MASK; |
450 | if (val == SYS_CLCD_ID_SANYO_3_8) | |
451 | panel_name = "Sanyo TM38QV67A02A"; | |
452 | else if (val == SYS_CLCD_ID_SANYO_2_5) | |
453 | panel_name = "Sanyo QVGA Portrait"; | |
454 | else if (val == SYS_CLCD_ID_EPSON_2_2) | |
455 | panel_name = "Epson L2F50113T00"; | |
456 | else if (val == SYS_CLCD_ID_VGA) | |
457 | panel_name = vga_panel_name; | |
458 | else { | |
459 | pr_err("CLCD: unknown LCD panel ID 0x%08x, using VGA\n", val); | |
460 | panel_name = vga_panel_name; | |
461 | } | |
8ad68bbf | 462 | |
3cb5ee49 RK |
463 | fb->panel = versatile_clcd_get_panel(panel_name); |
464 | if (!fb->panel) | |
465 | return -EINVAL; | |
8ad68bbf | 466 | |
3cb5ee49 | 467 | return versatile_clcd_setup_dma(fb, framesize); |
8ad68bbf CM |
468 | } |
469 | ||
470 | struct clcd_board clcd_plat_data = { | |
471 | .name = "RealView", | |
3cb5ee49 | 472 | .caps = CLCD_CAP_ALL, |
8ad68bbf CM |
473 | .check = clcdfb_check, |
474 | .decode = clcdfb_decode, | |
475 | .disable = realview_clcd_disable, | |
476 | .enable = realview_clcd_enable, | |
477 | .setup = realview_clcd_setup, | |
3cb5ee49 RK |
478 | .mmap = versatile_clcd_mmap_dma, |
479 | .remove = versatile_clcd_remove_dma, | |
8ad68bbf CM |
480 | }; |
481 | ||
482 | #ifdef CONFIG_LEDS | |
483 | #define VA_LEDS_BASE (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_LED_OFFSET) | |
484 | ||
485 | void realview_leds_event(led_event_t ledevt) | |
486 | { | |
487 | unsigned long flags; | |
488 | u32 val; | |
da055eb5 | 489 | u32 led = 1 << smp_processor_id(); |
8ad68bbf CM |
490 | |
491 | local_irq_save(flags); | |
492 | val = readl(VA_LEDS_BASE); | |
493 | ||
494 | switch (ledevt) { | |
495 | case led_idle_start: | |
da055eb5 | 496 | val = val & ~led; |
8ad68bbf CM |
497 | break; |
498 | ||
499 | case led_idle_end: | |
da055eb5 | 500 | val = val | led; |
8ad68bbf CM |
501 | break; |
502 | ||
503 | case led_timer: | |
da055eb5 | 504 | val = val ^ REALVIEW_SYS_LED7; |
8ad68bbf CM |
505 | break; |
506 | ||
507 | case led_halted: | |
508 | val = 0; | |
509 | break; | |
510 | ||
511 | default: | |
512 | break; | |
513 | } | |
514 | ||
515 | writel(val, VA_LEDS_BASE); | |
516 | local_irq_restore(flags); | |
517 | } | |
518 | #endif /* CONFIG_LEDS */ | |
519 | ||
520 | /* | |
521 | * Where is the timer (VA)? | |
522 | */ | |
80192735 CM |
523 | void __iomem *timer0_va_base; |
524 | void __iomem *timer1_va_base; | |
525 | void __iomem *timer2_va_base; | |
526 | void __iomem *timer3_va_base; | |
8ad68bbf | 527 | |
8ad68bbf | 528 | /* |
a8655e83 | 529 | * Set up the clock source and clock events devices |
8ad68bbf | 530 | */ |
8cc4c548 | 531 | void __init realview_timer_init(unsigned int timer_irq) |
8ad68bbf CM |
532 | { |
533 | u32 val; | |
534 | ||
535 | /* | |
536 | * set clock frequency: | |
537 | * REALVIEW_REFCLK is 32KHz | |
538 | * REALVIEW_TIMCLK is 1MHz | |
539 | */ | |
540 | val = readl(__io_address(REALVIEW_SCTL_BASE)); | |
541 | writel((REALVIEW_TIMCLK << REALVIEW_TIMER1_EnSel) | | |
542 | (REALVIEW_TIMCLK << REALVIEW_TIMER2_EnSel) | | |
543 | (REALVIEW_TIMCLK << REALVIEW_TIMER3_EnSel) | | |
544 | (REALVIEW_TIMCLK << REALVIEW_TIMER4_EnSel) | val, | |
545 | __io_address(REALVIEW_SCTL_BASE)); | |
546 | ||
547 | /* | |
548 | * Initialise to a known state (all timers off) | |
549 | */ | |
80192735 CM |
550 | writel(0, timer0_va_base + TIMER_CTRL); |
551 | writel(0, timer1_va_base + TIMER_CTRL); | |
552 | writel(0, timer2_va_base + TIMER_CTRL); | |
553 | writel(0, timer3_va_base + TIMER_CTRL); | |
8ad68bbf | 554 | |
fb593cf3 | 555 | sp804_clocksource_init(timer3_va_base, "timer3"); |
e3887714 | 556 | sp804_clockevents_init(timer0_va_base, timer_irq); |
8ad68bbf | 557 | } |
5b39d154 CM |
558 | |
559 | /* | |
560 | * Setup the memory banks. | |
561 | */ | |
562 | void realview_fixup(struct machine_desc *mdesc, struct tag *tags, char **from, | |
563 | struct meminfo *meminfo) | |
564 | { | |
565 | /* | |
566 | * Most RealView platforms have 512MB contiguous RAM at 0x70000000. | |
567 | * Half of this is mirrored at 0. | |
568 | */ | |
569 | #ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET | |
570 | meminfo->bank[0].start = 0x70000000; | |
571 | meminfo->bank[0].size = SZ_512M; | |
572 | meminfo->nr_banks = 1; | |
573 | #else | |
574 | meminfo->bank[0].start = 0; | |
575 | meminfo->bank[0].size = SZ_256M; | |
576 | meminfo->nr_banks = 1; | |
577 | #endif | |
578 | } |