2 * arch/arm/mach-realview/realview_pbx.c
4 * Copyright (C) 2009 ARM Limited
5 * Copyright (C) 2000 Deep Blue Solutions Ltd
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include <linux/init.h>
22 #include <linux/platform_device.h>
23 #include <linux/device.h>
24 #include <linux/amba/bus.h>
25 #include <linux/amba/pl061.h>
26 #include <linux/amba/mmci.h>
27 #include <linux/amba/pl022.h>
29 #include <linux/platform_data/clk-realview.h>
32 #include <asm/mach-types.h>
33 #include <asm/smp_twd.h>
34 #include <asm/pgtable.h>
35 #include <asm/hardware/gic.h>
36 #include <asm/hardware/cache-l2x0.h>
38 #include <asm/mach/arch.h>
39 #include <asm/mach/map.h>
40 #include <asm/mach/time.h>
42 #include <mach/hardware.h>
43 #include <mach/board-pbx.h>
44 #include <mach/irqs.h>
48 static struct map_desc realview_pbx_io_desc
[] __initdata
= {
50 .virtual = IO_ADDRESS(REALVIEW_SYS_BASE
),
51 .pfn
= __phys_to_pfn(REALVIEW_SYS_BASE
),
55 .virtual = IO_ADDRESS(REALVIEW_PBX_GIC_CPU_BASE
),
56 .pfn
= __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE
),
60 .virtual = IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE
),
61 .pfn
= __phys_to_pfn(REALVIEW_PBX_GIC_DIST_BASE
),
65 .virtual = IO_ADDRESS(REALVIEW_SCTL_BASE
),
66 .pfn
= __phys_to_pfn(REALVIEW_SCTL_BASE
),
70 .virtual = IO_ADDRESS(REALVIEW_PBX_TIMER0_1_BASE
),
71 .pfn
= __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE
),
75 .virtual = IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE
),
76 .pfn
= __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE
),
82 .virtual = PCIX_UNIT_BASE
,
83 .pfn
= __phys_to_pfn(REALVIEW_PBX_PCI_BASE
),
84 .length
= REALVIEW_PBX_PCI_BASE_SIZE
,
88 #ifdef CONFIG_DEBUG_LL
90 .virtual = IO_ADDRESS(REALVIEW_PBX_UART0_BASE
),
91 .pfn
= __phys_to_pfn(REALVIEW_PBX_UART0_BASE
),
98 static struct map_desc realview_local_io_desc
[] __initdata
= {
100 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_SCU_BASE
),
101 .pfn
= __phys_to_pfn(REALVIEW_PBX_TILE_SCU_BASE
),
105 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE
),
106 .pfn
= __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE
),
110 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE
),
111 .pfn
= __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE
),
117 static void __init
realview_pbx_map_io(void)
119 iotable_init(realview_pbx_io_desc
, ARRAY_SIZE(realview_pbx_io_desc
));
120 if (core_tile_pbx11mp() || core_tile_pbxa9mp())
121 iotable_init(realview_local_io_desc
, ARRAY_SIZE(realview_local_io_desc
));
124 static struct pl061_platform_data gpio0_plat_data
= {
128 static struct pl061_platform_data gpio1_plat_data
= {
132 static struct pl061_platform_data gpio2_plat_data
= {
136 static struct pl022_ssp_controller ssp0_plat_data
= {
143 * RealView PBXCore AMBA devices
146 #define GPIO2_IRQ { IRQ_PBX_GPIO2 }
147 #define GPIO3_IRQ { IRQ_PBX_GPIO3 }
148 #define AACI_IRQ { IRQ_PBX_AACI }
149 #define MMCI0_IRQ { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
150 #define KMI0_IRQ { IRQ_PBX_KMI0 }
151 #define KMI1_IRQ { IRQ_PBX_KMI1 }
152 #define PBX_SMC_IRQ { }
154 #define PBX_CLCD_IRQ { IRQ_PBX_CLCD }
155 #define DMAC_IRQ { IRQ_PBX_DMAC }
157 #define PBX_WATCHDOG_IRQ { IRQ_PBX_WATCHDOG }
158 #define PBX_GPIO0_IRQ { IRQ_PBX_GPIO0 }
159 #define GPIO1_IRQ { IRQ_PBX_GPIO1 }
160 #define PBX_RTC_IRQ { IRQ_PBX_RTC }
161 #define SCI_IRQ { IRQ_PBX_SCI }
162 #define PBX_UART0_IRQ { IRQ_PBX_UART0 }
163 #define PBX_UART1_IRQ { IRQ_PBX_UART1 }
164 #define PBX_UART2_IRQ { IRQ_PBX_UART2 }
165 #define PBX_UART3_IRQ { IRQ_PBX_UART3 }
166 #define PBX_SSP_IRQ { IRQ_PBX_SSP }
168 /* FPGA Primecells */
169 APB_DEVICE(aaci
, "fpga:aaci", AACI
, NULL
);
170 APB_DEVICE(mmc0
, "fpga:mmc0", MMCI0
, &realview_mmc0_plat_data
);
171 APB_DEVICE(kmi0
, "fpga:kmi0", KMI0
, NULL
);
172 APB_DEVICE(kmi1
, "fpga:kmi1", KMI1
, NULL
);
173 APB_DEVICE(uart3
, "fpga:uart3", PBX_UART3
, NULL
);
175 /* DevChip Primecells */
176 AHB_DEVICE(smc
, "dev:smc", PBX_SMC
, NULL
);
177 AHB_DEVICE(sctl
, "dev:sctl", SCTL
, NULL
);
178 APB_DEVICE(wdog
, "dev:wdog", PBX_WATCHDOG
, NULL
);
179 APB_DEVICE(gpio0
, "dev:gpio0", PBX_GPIO0
, &gpio0_plat_data
);
180 APB_DEVICE(gpio1
, "dev:gpio1", GPIO1
, &gpio1_plat_data
);
181 APB_DEVICE(gpio2
, "dev:gpio2", GPIO2
, &gpio2_plat_data
);
182 APB_DEVICE(rtc
, "dev:rtc", PBX_RTC
, NULL
);
183 APB_DEVICE(sci0
, "dev:sci0", SCI
, NULL
);
184 APB_DEVICE(uart0
, "dev:uart0", PBX_UART0
, NULL
);
185 APB_DEVICE(uart1
, "dev:uart1", PBX_UART1
, NULL
);
186 APB_DEVICE(uart2
, "dev:uart2", PBX_UART2
, NULL
);
187 APB_DEVICE(ssp0
, "dev:ssp0", PBX_SSP
, &ssp0_plat_data
);
189 /* Primecells on the NEC ISSP chip */
190 AHB_DEVICE(clcd
, "issp:clcd", PBX_CLCD
, &clcd_plat_data
);
191 AHB_DEVICE(dmac
, "issp:dmac", DMAC
, NULL
);
193 static struct amba_device
*amba_devs
[] __initdata
= {
216 * RealView PB-X platform devices
218 static struct resource realview_pbx_flash_resources
[] = {
220 .start
= REALVIEW_PBX_FLASH0_BASE
,
221 .end
= REALVIEW_PBX_FLASH0_BASE
+ REALVIEW_PBX_FLASH0_SIZE
- 1,
222 .flags
= IORESOURCE_MEM
,
225 .start
= REALVIEW_PBX_FLASH1_BASE
,
226 .end
= REALVIEW_PBX_FLASH1_BASE
+ REALVIEW_PBX_FLASH1_SIZE
- 1,
227 .flags
= IORESOURCE_MEM
,
231 static struct resource realview_pbx_smsc911x_resources
[] = {
233 .start
= REALVIEW_PBX_ETH_BASE
,
234 .end
= REALVIEW_PBX_ETH_BASE
+ SZ_64K
- 1,
235 .flags
= IORESOURCE_MEM
,
238 .start
= IRQ_PBX_ETH
,
240 .flags
= IORESOURCE_IRQ
,
244 static struct resource realview_pbx_isp1761_resources
[] = {
246 .start
= REALVIEW_PBX_USB_BASE
,
247 .end
= REALVIEW_PBX_USB_BASE
+ SZ_128K
- 1,
248 .flags
= IORESOURCE_MEM
,
251 .start
= IRQ_PBX_USB
,
253 .flags
= IORESOURCE_IRQ
,
257 static struct resource pmu_resources
[] = {
259 .start
= IRQ_PBX_PMU_CPU0
,
260 .end
= IRQ_PBX_PMU_CPU0
,
261 .flags
= IORESOURCE_IRQ
,
264 .start
= IRQ_PBX_PMU_CPU1
,
265 .end
= IRQ_PBX_PMU_CPU1
,
266 .flags
= IORESOURCE_IRQ
,
269 .start
= IRQ_PBX_PMU_CPU2
,
270 .end
= IRQ_PBX_PMU_CPU2
,
271 .flags
= IORESOURCE_IRQ
,
274 .start
= IRQ_PBX_PMU_CPU3
,
275 .end
= IRQ_PBX_PMU_CPU3
,
276 .flags
= IORESOURCE_IRQ
,
280 static struct platform_device pmu_device
= {
283 .num_resources
= ARRAY_SIZE(pmu_resources
),
284 .resource
= pmu_resources
,
287 static void __init
gic_init_irq(void)
289 /* ARM PBX on-board GIC */
290 if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
291 gic_init(0, 29, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE
),
292 __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE
));
294 gic_init(0, IRQ_PBX_GIC_START
,
295 __io_address(REALVIEW_PBX_GIC_DIST_BASE
),
296 __io_address(REALVIEW_PBX_GIC_CPU_BASE
));
300 #ifdef CONFIG_HAVE_ARM_TWD
301 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer
,
302 REALVIEW_PBX_TILE_TWD_BASE
,
305 static void __init
realview_pbx_twd_init(void)
307 int err
= twd_local_timer_register(&twd_local_timer
);
309 pr_err("twd_local_timer_register failed %d\n", err
);
312 #define realview_pbx_twd_init() do { } while(0)
315 static void __init
realview_pbx_timer_init(void)
317 timer0_va_base
= __io_address(REALVIEW_PBX_TIMER0_1_BASE
);
318 timer1_va_base
= __io_address(REALVIEW_PBX_TIMER0_1_BASE
) + 0x20;
319 timer2_va_base
= __io_address(REALVIEW_PBX_TIMER2_3_BASE
);
320 timer3_va_base
= __io_address(REALVIEW_PBX_TIMER2_3_BASE
) + 0x20;
322 realview_clk_init(__io_address(REALVIEW_SYS_BASE
), false);
323 realview_timer_init(IRQ_PBX_TIMER0_1
);
324 realview_pbx_twd_init();
327 static void realview_pbx_fixup(struct tag
*tags
, char **from
,
328 struct meminfo
*meminfo
)
330 #ifdef CONFIG_SPARSEMEM
332 * Memory configuration with SPARSEMEM enabled on RealView PBX (see
333 * asm/mach/memory.h for more information).
335 meminfo
->bank
[0].start
= 0;
336 meminfo
->bank
[0].size
= SZ_256M
;
337 meminfo
->bank
[1].start
= 0x20000000;
338 meminfo
->bank
[1].size
= SZ_512M
;
339 meminfo
->bank
[2].start
= 0x80000000;
340 meminfo
->bank
[2].size
= SZ_256M
;
341 meminfo
->nr_banks
= 3;
343 realview_fixup(tags
, from
, meminfo
);
347 static void realview_pbx_restart(char mode
, const char *cmd
)
349 void __iomem
*reset_ctrl
= __io_address(REALVIEW_SYS_RESETCTL
);
350 void __iomem
*lock_ctrl
= __io_address(REALVIEW_SYS_LOCK
);
353 * To reset, we hit the on-board reset register
356 __raw_writel(REALVIEW_SYS_LOCK_VAL
, lock_ctrl
);
357 __raw_writel(0x00F0, reset_ctrl
);
358 __raw_writel(0x00F4, reset_ctrl
);
362 static void __init
realview_pbx_init(void)
366 #ifdef CONFIG_CACHE_L2X0
367 if (core_tile_pbxa9mp()) {
368 void __iomem
*l2x0_base
=
369 __io_address(REALVIEW_PBX_TILE_L220_BASE
);
371 /* set RAM latencies to 1 cycle for eASIC */
372 writel(0, l2x0_base
+ L2X0_TAG_LATENCY_CTRL
);
373 writel(0, l2x0_base
+ L2X0_DATA_LATENCY_CTRL
);
375 /* 16KB way size, 8-way associativity, parity disabled
376 * Bits: .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
377 l2x0_init(l2x0_base
, 0x02520000, 0xc0000fff);
378 platform_device_register(&pmu_device
);
382 realview_flash_register(realview_pbx_flash_resources
,
383 ARRAY_SIZE(realview_pbx_flash_resources
));
384 realview_eth_register(NULL
, realview_pbx_smsc911x_resources
);
385 platform_device_register(&realview_i2c_device
);
386 platform_device_register(&realview_cf_device
);
387 realview_usb_register(realview_pbx_isp1761_resources
);
389 for (i
= 0; i
< ARRAY_SIZE(amba_devs
); i
++) {
390 struct amba_device
*d
= amba_devs
[i
];
391 amba_device_register(d
, &iomem_resource
);
395 MACHINE_START(REALVIEW_PBX
, "ARM-RealView PBX")
396 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
397 .atag_offset
= 0x100,
398 .smp
= smp_ops(realview_smp_ops
),
399 .fixup
= realview_pbx_fixup
,
400 .map_io
= realview_pbx_map_io
,
401 .init_early
= realview_init_early
,
402 .init_irq
= gic_init_irq
,
403 .init_time
= realview_pbx_timer_init
,
404 .handle_irq
= gic_handle_irq
,
405 .init_machine
= realview_pbx_init
,
406 #ifdef CONFIG_ZONE_DMA
407 .dma_zone_size
= SZ_256M
,
409 .restart
= realview_pbx_restart
,