Allow the L2X0 outer cache support to be configurable
[linux-2.6.git] / arch / arm / mach-realview / realview_pb1176.c
1 /*
2  *  linux/arch/arm/mach-realview/realview_pb1176.c
3  *
4  *  Copyright (C) 2008 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  */
21
22 #include <linux/init.h>
23 #include <linux/platform_device.h>
24 #include <linux/sysdev.h>
25 #include <linux/amba/bus.h>
26
27 #include <asm/hardware.h>
28 #include <asm/io.h>
29 #include <asm/irq.h>
30 #include <asm/leds.h>
31 #include <asm/mach-types.h>
32 #include <asm/hardware/gic.h>
33 #include <asm/hardware/icst307.h>
34 #include <asm/hardware/cache-l2x0.h>
35
36 #include <asm/mach/arch.h>
37 #include <asm/mach/flash.h>
38 #include <asm/mach/map.h>
39 #include <asm/mach/mmc.h>
40 #include <asm/mach/time.h>
41
42 #include <asm/arch/board-pb1176.h>
43 #include <asm/arch/irqs.h>
44
45 #include "core.h"
46 #include "clock.h"
47
48 static struct map_desc realview_pb1176_io_desc[] __initdata = {
49         {
50                 .virtual        = IO_ADDRESS(REALVIEW_SYS_BASE),
51                 .pfn            = __phys_to_pfn(REALVIEW_SYS_BASE),
52                 .length         = SZ_4K,
53                 .type           = MT_DEVICE,
54         }, {
55                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_GIC_CPU_BASE),
56                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_GIC_CPU_BASE),
57                 .length         = SZ_4K,
58                 .type           = MT_DEVICE,
59         }, {
60                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_GIC_DIST_BASE),
61                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_GIC_DIST_BASE),
62                 .length         = SZ_4K,
63                 .type           = MT_DEVICE,
64         }, {
65                 .virtual        = IO_ADDRESS(REALVIEW_DC1176_GIC_CPU_BASE),
66                 .pfn            = __phys_to_pfn(REALVIEW_DC1176_GIC_CPU_BASE),
67                 .length         = SZ_4K,
68                 .type           = MT_DEVICE,
69         }, {
70                 .virtual        = IO_ADDRESS(REALVIEW_DC1176_GIC_DIST_BASE),
71                 .pfn            = __phys_to_pfn(REALVIEW_DC1176_GIC_DIST_BASE),
72                 .length         = SZ_4K,
73                 .type           = MT_DEVICE,
74         }, {
75                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
76                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
77                 .length         = SZ_4K,
78                 .type           = MT_DEVICE,
79         }, {
80                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_TIMER0_1_BASE),
81                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_TIMER0_1_BASE),
82                 .length         = SZ_4K,
83                 .type           = MT_DEVICE,
84         }, {
85                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_TIMER2_3_BASE),
86                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_TIMER2_3_BASE),
87                 .length         = SZ_4K,
88                 .type           = MT_DEVICE,
89         }, {
90                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_L220_BASE),
91                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_L220_BASE),
92                 .length         = SZ_8K,
93                 .type           = MT_DEVICE,
94         },
95 #ifdef CONFIG_DEBUG_LL
96         {
97                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_UART0_BASE),
98                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_UART0_BASE),
99                 .length         = SZ_4K,
100                 .type           = MT_DEVICE,
101         },
102 #endif
103 };
104
105 static void __init realview_pb1176_map_io(void)
106 {
107         iotable_init(realview_pb1176_io_desc, ARRAY_SIZE(realview_pb1176_io_desc));
108 }
109
110 /*
111  * RealView PB1176 AMBA devices
112  */
113 #define GPIO2_IRQ       { IRQ_PB1176_GPIO2, NO_IRQ }
114 #define GPIO2_DMA       { 0, 0 }
115 #define GPIO3_IRQ       { IRQ_PB1176_GPIO3, NO_IRQ }
116 #define GPIO3_DMA       { 0, 0 }
117 #define AACI_IRQ        { IRQ_PB1176_AACI, NO_IRQ }
118 #define AACI_DMA        { 0x80, 0x81 }
119 #define MMCI0_IRQ       { IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
120 #define MMCI0_DMA       { 0x84, 0 }
121 #define KMI0_IRQ        { IRQ_PB1176_KMI0, NO_IRQ }
122 #define KMI0_DMA        { 0, 0 }
123 #define KMI1_IRQ        { IRQ_PB1176_KMI1, NO_IRQ }
124 #define KMI1_DMA        { 0, 0 }
125 #define PB1176_SMC_IRQ  { NO_IRQ, NO_IRQ }
126 #define PB1176_SMC_DMA  { 0, 0 }
127 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
128 #define MPMC_DMA        { 0, 0 }
129 #define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD, NO_IRQ }
130 #define PB1176_CLCD_DMA { 0, 0 }
131 #define DMAC_IRQ        { IRQ_PB1176_DMAC, NO_IRQ }
132 #define DMAC_DMA        { 0, 0 }
133 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
134 #define SCTL_DMA        { 0, 0 }
135 #define PB1176_WATCHDOG_IRQ     { IRQ_DC1176_WATCHDOG, NO_IRQ }
136 #define PB1176_WATCHDOG_DMA     { 0, 0 }
137 #define PB1176_GPIO0_IRQ        { IRQ_PB1176_GPIO0, NO_IRQ }
138 #define PB1176_GPIO0_DMA        { 0, 0 }
139 #define GPIO1_IRQ       { IRQ_PB1176_GPIO1, NO_IRQ }
140 #define GPIO1_DMA       { 0, 0 }
141 #define PB1176_RTC_IRQ  { IRQ_DC1176_RTC, NO_IRQ }
142 #define PB1176_RTC_DMA  { 0, 0 }
143 #define SCI_IRQ         { IRQ_PB1176_SCI, NO_IRQ }
144 #define SCI_DMA         { 7, 6 }
145 #define PB1176_UART0_IRQ        { IRQ_DC1176_UART0, NO_IRQ }
146 #define PB1176_UART0_DMA        { 15, 14 }
147 #define PB1176_UART1_IRQ        { IRQ_DC1176_UART1, NO_IRQ }
148 #define PB1176_UART1_DMA        { 13, 12 }
149 #define PB1176_UART2_IRQ        { IRQ_DC1176_UART2, NO_IRQ }
150 #define PB1176_UART2_DMA        { 11, 10 }
151 #define PB1176_UART3_IRQ        { IRQ_DC1176_UART3, NO_IRQ }
152 #define PB1176_UART3_DMA        { 0x86, 0x87 }
153 #define PB1176_SSP_IRQ          { IRQ_PB1176_SSP, NO_IRQ }
154 #define PB1176_SSP_DMA          { 9, 8 }
155
156 /* FPGA Primecells */
157 AMBA_DEVICE(aaci,       "fpga:04",      AACI,           NULL);
158 AMBA_DEVICE(mmc0,       "fpga:05",      MMCI0,          &realview_mmc0_plat_data);
159 AMBA_DEVICE(kmi0,       "fpga:06",      KMI0,           NULL);
160 AMBA_DEVICE(kmi1,       "fpga:07",      KMI1,           NULL);
161 AMBA_DEVICE(uart3,      "fpga:09",      PB1176_UART3,   NULL);
162
163 /* DevChip Primecells */
164 AMBA_DEVICE(smc,        "dev:00",       PB1176_SMC,     NULL);
165 AMBA_DEVICE(sctl,       "dev:e0",       SCTL,           NULL);
166 AMBA_DEVICE(wdog,       "dev:e1",       PB1176_WATCHDOG,        NULL);
167 AMBA_DEVICE(gpio0,      "dev:e4",       PB1176_GPIO0,   NULL);
168 AMBA_DEVICE(gpio1,      "dev:e5",       GPIO1,          NULL);
169 AMBA_DEVICE(gpio2,      "dev:e6",       GPIO2,          NULL);
170 AMBA_DEVICE(rtc,        "dev:e8",       PB1176_RTC,     NULL);
171 AMBA_DEVICE(sci0,       "dev:f0",       SCI,            NULL);
172 AMBA_DEVICE(uart0,      "dev:f1",       PB1176_UART0,   NULL);
173 AMBA_DEVICE(uart1,      "dev:f2",       PB1176_UART1,   NULL);
174 AMBA_DEVICE(uart2,      "dev:f3",       PB1176_UART2,   NULL);
175 AMBA_DEVICE(ssp0,       "dev:f4",       PB1176_SSP,     NULL);
176
177 /* Primecells on the NEC ISSP chip */
178 AMBA_DEVICE(clcd,       "issp:20",      PB1176_CLCD,    &clcd_plat_data);
179 //AMBA_DEVICE(dmac,     "issp:30",      PB1176_DMAC,    NULL);
180
181 static struct amba_device *amba_devs[] __initdata = {
182 //      &dmac_device,
183         &uart0_device,
184         &uart1_device,
185         &uart2_device,
186         &uart3_device,
187         &smc_device,
188         &clcd_device,
189         &sctl_device,
190         &wdog_device,
191         &gpio0_device,
192         &gpio1_device,
193         &gpio2_device,
194         &rtc_device,
195         &sci0_device,
196         &ssp0_device,
197         &aaci_device,
198         &mmc0_device,
199         &kmi0_device,
200         &kmi1_device,
201 };
202
203 /*
204  * RealView PB1176 platform devices
205  */
206 static struct resource realview_pb1176_flash_resource = {
207         .start                  = REALVIEW_PB1176_FLASH_BASE,
208         .end                    = REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1,
209         .flags                  = IORESOURCE_MEM,
210 };
211
212 static struct resource realview_pb1176_smsc911x_resources[] = {
213         [0] = {
214                 .start          = REALVIEW_PB1176_ETH_BASE,
215                 .end            = REALVIEW_PB1176_ETH_BASE + SZ_64K - 1,
216                 .flags          = IORESOURCE_MEM,
217         },
218         [1] = {
219                 .start          = IRQ_PB1176_ETH,
220                 .end            = IRQ_PB1176_ETH,
221                 .flags          = IORESOURCE_IRQ,
222         },
223 };
224
225 static struct platform_device realview_pb1176_smsc911x_device = {
226         .name           = "smc911x",
227         .id             = 0,
228         .num_resources  = ARRAY_SIZE(realview_pb1176_smsc911x_resources),
229         .resource       = realview_pb1176_smsc911x_resources,
230 };
231
232 static void __init gic_init_irq(void)
233 {
234         /* ARM1176 DevChip GIC, primary */
235         gic_cpu_base_addr = __io_address(REALVIEW_DC1176_GIC_CPU_BASE);
236         gic_dist_init(0, __io_address(REALVIEW_DC1176_GIC_DIST_BASE), IRQ_DC1176_GIC_START);
237         gic_cpu_init(0, gic_cpu_base_addr);
238
239         /* board GIC, secondary */
240         gic_dist_init(1, __io_address(REALVIEW_PB1176_GIC_DIST_BASE), IRQ_PB1176_GIC_START);
241         gic_cpu_init(1, __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
242         gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
243 }
244
245 static void __init realview_pb1176_timer_init(void)
246 {
247         timer0_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE);
248         timer1_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE) + 0x20;
249         timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE);
250         timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20;
251
252         realview_timer_init(IRQ_DC1176_TIMER0);
253 }
254
255 static struct sys_timer realview_pb1176_timer = {
256         .init           = realview_pb1176_timer_init,
257 };
258
259 static void __init realview_pb1176_init(void)
260 {
261         int i;
262
263 #ifdef CONFIG_CACHE_L2X0
264         /* 128Kb (16Kb/way) 8-way associativity. evmon/parity/share enabled. */
265         l2x0_init(__io_address(REALVIEW_PB1176_L220_BASE), 0x00730000, 0xfe000fff);
266 #endif
267
268         clk_register(&realview_clcd_clk);
269
270         realview_flash_register(&realview_pb1176_flash_resource, 1);
271         platform_device_register(&realview_pb1176_smsc911x_device);
272
273         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
274                 struct amba_device *d = amba_devs[i];
275                 amba_device_register(d, &iomem_resource);
276         }
277
278 #ifdef CONFIG_LEDS
279         leds_event = realview_leds_event;
280 #endif
281 }
282
283 MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
284         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
285         .phys_io        = REALVIEW_PB1176_UART0_BASE,
286         .io_pg_offst    = (IO_ADDRESS(REALVIEW_PB1176_UART0_BASE) >> 18) & 0xfffc,
287         .boot_params    = 0x00000100,
288         .map_io         = realview_pb1176_map_io,
289         .init_irq       = gic_init_irq,
290         .timer          = &realview_pb1176_timer,
291         .init_machine   = realview_pb1176_init,
292 MACHINE_END