2 * linux/arch/arm/mach-realview/realview_eb.c
4 * Copyright (C) 2004 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 as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
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.
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
22 #include <linux/init.h>
23 #include <linux/platform_device.h>
24 #include <linux/device.h>
25 #include <linux/amba/bus.h>
26 #include <linux/amba/pl061.h>
27 #include <linux/amba/mmci.h>
28 #include <linux/amba/pl022.h>
30 #include <linux/irqchip/arm-gic.h>
31 #include <linux/platform_data/clk-realview.h>
32 #include <linux/reboot.h>
34 #include <mach/hardware.h>
36 #include <asm/mach-types.h>
37 #include <asm/pgtable.h>
38 #include <asm/hardware/cache-l2x0.h>
39 #include <asm/smp_twd.h>
41 #include <asm/mach/arch.h>
42 #include <asm/mach/map.h>
43 #include <asm/mach/time.h>
45 #include <mach/board-eb.h>
46 #include <mach/irqs.h>
50 static struct map_desc realview_eb_io_desc
[] __initdata
= {
52 .virtual = IO_ADDRESS(REALVIEW_SYS_BASE
),
53 .pfn
= __phys_to_pfn(REALVIEW_SYS_BASE
),
57 .virtual = IO_ADDRESS(REALVIEW_EB_GIC_CPU_BASE
),
58 .pfn
= __phys_to_pfn(REALVIEW_EB_GIC_CPU_BASE
),
62 .virtual = IO_ADDRESS(REALVIEW_EB_GIC_DIST_BASE
),
63 .pfn
= __phys_to_pfn(REALVIEW_EB_GIC_DIST_BASE
),
67 .virtual = IO_ADDRESS(REALVIEW_SCTL_BASE
),
68 .pfn
= __phys_to_pfn(REALVIEW_SCTL_BASE
),
72 .virtual = IO_ADDRESS(REALVIEW_EB_TIMER0_1_BASE
),
73 .pfn
= __phys_to_pfn(REALVIEW_EB_TIMER0_1_BASE
),
77 .virtual = IO_ADDRESS(REALVIEW_EB_TIMER2_3_BASE
),
78 .pfn
= __phys_to_pfn(REALVIEW_EB_TIMER2_3_BASE
),
82 #ifdef CONFIG_DEBUG_LL
84 .virtual = IO_ADDRESS(REALVIEW_EB_UART0_BASE
),
85 .pfn
= __phys_to_pfn(REALVIEW_EB_UART0_BASE
),
92 static struct map_desc realview_eb11mp_io_desc
[] __initdata
= {
94 .virtual = IO_ADDRESS(REALVIEW_EB11MP_PRIV_MEM_BASE
),
95 .pfn
= __phys_to_pfn(REALVIEW_EB11MP_PRIV_MEM_BASE
),
96 .length
= REALVIEW_EB11MP_PRIV_MEM_SIZE
,
99 .virtual = IO_ADDRESS(REALVIEW_EB11MP_L220_BASE
),
100 .pfn
= __phys_to_pfn(REALVIEW_EB11MP_L220_BASE
),
106 static void __init
realview_eb_map_io(void)
108 iotable_init(realview_eb_io_desc
, ARRAY_SIZE(realview_eb_io_desc
));
109 if (core_tile_eb11mp() || core_tile_a9mp())
110 iotable_init(realview_eb11mp_io_desc
, ARRAY_SIZE(realview_eb11mp_io_desc
));
113 static struct pl061_platform_data gpio0_plat_data
= {
117 static struct pl061_platform_data gpio1_plat_data
= {
121 static struct pl061_platform_data gpio2_plat_data
= {
125 static struct pl022_ssp_controller ssp0_plat_data
= {
132 * RealView EB AMBA devices
136 * These devices are connected via the core APB bridge
138 #define GPIO2_IRQ { IRQ_EB_GPIO2 }
139 #define GPIO3_IRQ { IRQ_EB_GPIO3 }
141 #define AACI_IRQ { IRQ_EB_AACI }
142 #define MMCI0_IRQ { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
143 #define KMI0_IRQ { IRQ_EB_KMI0 }
144 #define KMI1_IRQ { IRQ_EB_KMI1 }
147 * These devices are connected directly to the multi-layer AHB switch
149 #define EB_SMC_IRQ { }
151 #define EB_CLCD_IRQ { IRQ_EB_CLCD }
152 #define DMAC_IRQ { IRQ_EB_DMA }
155 * These devices are connected via the core APB bridge
158 #define EB_WATCHDOG_IRQ { IRQ_EB_WDOG }
159 #define EB_GPIO0_IRQ { IRQ_EB_GPIO0 }
160 #define GPIO1_IRQ { IRQ_EB_GPIO1 }
161 #define EB_RTC_IRQ { IRQ_EB_RTC }
164 * These devices are connected via the DMA APB bridge
166 #define SCI_IRQ { IRQ_EB_SCI }
167 #define EB_UART0_IRQ { IRQ_EB_UART0 }
168 #define EB_UART1_IRQ { IRQ_EB_UART1 }
169 #define EB_UART2_IRQ { IRQ_EB_UART2 }
170 #define EB_UART3_IRQ { IRQ_EB_UART3 }
171 #define EB_SSP_IRQ { IRQ_EB_SSP }
173 /* FPGA Primecells */
174 APB_DEVICE(aaci
, "fpga:aaci", AACI
, NULL
);
175 APB_DEVICE(mmc0
, "fpga:mmc0", MMCI0
, &realview_mmc0_plat_data
);
176 APB_DEVICE(kmi0
, "fpga:kmi0", KMI0
, NULL
);
177 APB_DEVICE(kmi1
, "fpga:kmi1", KMI1
, NULL
);
178 APB_DEVICE(uart3
, "fpga:uart3", EB_UART3
, NULL
);
180 /* DevChip Primecells */
181 AHB_DEVICE(smc
, "dev:smc", EB_SMC
, NULL
);
182 AHB_DEVICE(clcd
, "dev:clcd", EB_CLCD
, &clcd_plat_data
);
183 AHB_DEVICE(dmac
, "dev:dmac", DMAC
, NULL
);
184 AHB_DEVICE(sctl
, "dev:sctl", SCTL
, NULL
);
185 APB_DEVICE(wdog
, "dev:wdog", EB_WATCHDOG
, NULL
);
186 APB_DEVICE(gpio0
, "dev:gpio0", EB_GPIO0
, &gpio0_plat_data
);
187 APB_DEVICE(gpio1
, "dev:gpio1", GPIO1
, &gpio1_plat_data
);
188 APB_DEVICE(gpio2
, "dev:gpio2", GPIO2
, &gpio2_plat_data
);
189 APB_DEVICE(rtc
, "dev:rtc", EB_RTC
, NULL
);
190 APB_DEVICE(sci0
, "dev:sci0", SCI
, NULL
);
191 APB_DEVICE(uart0
, "dev:uart0", EB_UART0
, NULL
);
192 APB_DEVICE(uart1
, "dev:uart1", EB_UART1
, NULL
);
193 APB_DEVICE(uart2
, "dev:uart2", EB_UART2
, NULL
);
194 APB_DEVICE(ssp0
, "dev:ssp0", EB_SSP
, &ssp0_plat_data
);
196 static struct amba_device
*amba_devs
[] __initdata
= {
219 * RealView EB platform devices
221 static struct resource realview_eb_flash_resource
= {
222 .start
= REALVIEW_EB_FLASH_BASE
,
223 .end
= REALVIEW_EB_FLASH_BASE
+ REALVIEW_EB_FLASH_SIZE
- 1,
224 .flags
= IORESOURCE_MEM
,
227 static struct resource realview_eb_eth_resources
[] = {
229 .start
= REALVIEW_EB_ETH_BASE
,
230 .end
= REALVIEW_EB_ETH_BASE
+ SZ_64K
- 1,
231 .flags
= IORESOURCE_MEM
,
236 .flags
= IORESOURCE_IRQ
,
241 * Detect and register the correct Ethernet device. RealView/EB rev D
242 * platforms use the newer SMSC LAN9118 Ethernet chip
244 static int eth_device_register(void)
246 void __iomem
*eth_addr
= ioremap(REALVIEW_EB_ETH_BASE
, SZ_4K
);
247 const char *name
= NULL
;
253 idrev
= readl(eth_addr
+ 0x50);
254 if ((idrev
& 0xFFFF0000) != 0x01180000)
255 /* SMSC LAN9118 not present, use LAN91C111 instead */
259 return realview_eth_register(name
, realview_eb_eth_resources
);
262 static struct resource realview_eb_isp1761_resources
[] = {
264 .start
= REALVIEW_EB_USB_BASE
,
265 .end
= REALVIEW_EB_USB_BASE
+ SZ_128K
- 1,
266 .flags
= IORESOURCE_MEM
,
271 .flags
= IORESOURCE_IRQ
,
275 static struct resource pmu_resources
[] = {
277 .start
= IRQ_EB11MP_PMU_CPU0
,
278 .end
= IRQ_EB11MP_PMU_CPU0
,
279 .flags
= IORESOURCE_IRQ
,
282 .start
= IRQ_EB11MP_PMU_CPU1
,
283 .end
= IRQ_EB11MP_PMU_CPU1
,
284 .flags
= IORESOURCE_IRQ
,
287 .start
= IRQ_EB11MP_PMU_CPU2
,
288 .end
= IRQ_EB11MP_PMU_CPU2
,
289 .flags
= IORESOURCE_IRQ
,
292 .start
= IRQ_EB11MP_PMU_CPU3
,
293 .end
= IRQ_EB11MP_PMU_CPU3
,
294 .flags
= IORESOURCE_IRQ
,
298 static struct platform_device pmu_device
= {
301 .num_resources
= ARRAY_SIZE(pmu_resources
),
302 .resource
= pmu_resources
,
305 static struct resource char_lcd_resources
[] = {
307 .start
= REALVIEW_CHAR_LCD_BASE
,
308 .end
= (REALVIEW_CHAR_LCD_BASE
+ SZ_4K
- 1),
309 .flags
= IORESOURCE_MEM
,
312 .start
= IRQ_EB_CHARLCD
,
313 .end
= IRQ_EB_CHARLCD
,
314 .flags
= IORESOURCE_IRQ
,
318 static struct platform_device char_lcd_device
= {
319 .name
= "arm-charlcd",
321 .num_resources
= ARRAY_SIZE(char_lcd_resources
),
322 .resource
= char_lcd_resources
,
325 static void __init
gic_init_irq(void)
327 if (core_tile_eb11mp() || core_tile_a9mp()) {
328 unsigned int pldctrl
;
331 writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK
));
332 pldctrl
= readl(__io_address(REALVIEW_SYS_BASE
) + REALVIEW_EB11MP_SYS_PLD_CTRL1
);
333 pldctrl
|= 0x00800000;
334 writel(pldctrl
, __io_address(REALVIEW_SYS_BASE
) + REALVIEW_EB11MP_SYS_PLD_CTRL1
);
335 writel(0x00000000, __io_address(REALVIEW_SYS_LOCK
));
337 /* core tile GIC, primary */
338 gic_init(0, 29, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE
),
339 __io_address(REALVIEW_EB11MP_GIC_CPU_BASE
));
341 #ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
342 /* board GIC, secondary */
343 gic_init(1, 96, __io_address(REALVIEW_EB_GIC_DIST_BASE
),
344 __io_address(REALVIEW_EB_GIC_CPU_BASE
));
345 gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1
);
348 /* board GIC, primary */
349 gic_init(0, 29, __io_address(REALVIEW_EB_GIC_DIST_BASE
),
350 __io_address(REALVIEW_EB_GIC_CPU_BASE
));
355 * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
357 static void realview_eb11mp_fixup(void)
360 dmac_device
.irq
[0] = IRQ_EB11MP_DMA
;
361 uart0_device
.irq
[0] = IRQ_EB11MP_UART0
;
362 uart1_device
.irq
[0] = IRQ_EB11MP_UART1
;
363 uart2_device
.irq
[0] = IRQ_EB11MP_UART2
;
364 uart3_device
.irq
[0] = IRQ_EB11MP_UART3
;
365 clcd_device
.irq
[0] = IRQ_EB11MP_CLCD
;
366 wdog_device
.irq
[0] = IRQ_EB11MP_WDOG
;
367 gpio0_device
.irq
[0] = IRQ_EB11MP_GPIO0
;
368 gpio1_device
.irq
[0] = IRQ_EB11MP_GPIO1
;
369 gpio2_device
.irq
[0] = IRQ_EB11MP_GPIO2
;
370 rtc_device
.irq
[0] = IRQ_EB11MP_RTC
;
371 sci0_device
.irq
[0] = IRQ_EB11MP_SCI
;
372 ssp0_device
.irq
[0] = IRQ_EB11MP_SSP
;
373 aaci_device
.irq
[0] = IRQ_EB11MP_AACI
;
374 mmc0_device
.irq
[0] = IRQ_EB11MP_MMCI0A
;
375 mmc0_device
.irq
[1] = IRQ_EB11MP_MMCI0B
;
376 kmi0_device
.irq
[0] = IRQ_EB11MP_KMI0
;
377 kmi1_device
.irq
[0] = IRQ_EB11MP_KMI1
;
379 /* platform devices */
380 realview_eb_eth_resources
[1].start
= IRQ_EB11MP_ETH
;
381 realview_eb_eth_resources
[1].end
= IRQ_EB11MP_ETH
;
382 realview_eb_isp1761_resources
[1].start
= IRQ_EB11MP_USB
;
383 realview_eb_isp1761_resources
[1].end
= IRQ_EB11MP_USB
;
386 #ifdef CONFIG_HAVE_ARM_TWD
387 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer
,
388 REALVIEW_EB11MP_TWD_BASE
,
391 static void __init
realview_eb_twd_init(void)
393 if (core_tile_eb11mp() || core_tile_a9mp()) {
394 int err
= twd_local_timer_register(&twd_local_timer
);
396 pr_err("twd_local_timer_register failed %d\n", err
);
400 #define realview_eb_twd_init() do { } while(0)
403 static void __init
realview_eb_timer_init(void)
405 unsigned int timer_irq
;
407 timer0_va_base
= __io_address(REALVIEW_EB_TIMER0_1_BASE
);
408 timer1_va_base
= __io_address(REALVIEW_EB_TIMER0_1_BASE
) + 0x20;
409 timer2_va_base
= __io_address(REALVIEW_EB_TIMER2_3_BASE
);
410 timer3_va_base
= __io_address(REALVIEW_EB_TIMER2_3_BASE
) + 0x20;
412 if (core_tile_eb11mp() || core_tile_a9mp())
413 timer_irq
= IRQ_EB11MP_TIMER0_1
;
415 timer_irq
= IRQ_EB_TIMER0_1
;
417 realview_clk_init(__io_address(REALVIEW_SYS_BASE
), false);
418 realview_timer_init(timer_irq
);
419 realview_eb_twd_init();
422 static void realview_eb_restart(enum reboot_mode mode
, const char *cmd
)
424 void __iomem
*reset_ctrl
= __io_address(REALVIEW_SYS_RESETCTL
);
425 void __iomem
*lock_ctrl
= __io_address(REALVIEW_SYS_LOCK
);
428 * To reset, we hit the on-board reset register
431 __raw_writel(REALVIEW_SYS_LOCK_VAL
, lock_ctrl
);
432 if (core_tile_eb11mp())
433 __raw_writel(0x0008, reset_ctrl
);
437 static void __init
realview_eb_init(void)
441 if (core_tile_eb11mp() || core_tile_a9mp()) {
442 realview_eb11mp_fixup();
444 #ifdef CONFIG_CACHE_L2X0
446 * The PL220 needs to be manually configured as the hardware
447 * doesn't report the correct sizes.
448 * 1MB (128KB/way), 8-way associativity, event monitor and
449 * parity enabled, ignore share bit, no force write allocate
450 * Bits: .... ...0 0111 1001 0000 .... .... ....
452 l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE
), 0x00790000, 0xfe000fff);
454 platform_device_register(&pmu_device
);
457 realview_flash_register(&realview_eb_flash_resource
, 1);
458 platform_device_register(&realview_i2c_device
);
459 platform_device_register(&char_lcd_device
);
460 platform_device_register(&realview_leds_device
);
461 eth_device_register();
462 realview_usb_register(realview_eb_isp1761_resources
);
464 for (i
= 0; i
< ARRAY_SIZE(amba_devs
); i
++) {
465 struct amba_device
*d
= amba_devs
[i
];
466 amba_device_register(d
, &iomem_resource
);
470 MACHINE_START(REALVIEW_EB
, "ARM-RealView EB")
471 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
472 .atag_offset
= 0x100,
473 .smp
= smp_ops(realview_smp_ops
),
474 .fixup
= realview_fixup
,
475 .map_io
= realview_eb_map_io
,
476 .init_early
= realview_init_early
,
477 .init_irq
= gic_init_irq
,
478 .init_time
= realview_eb_timer_init
,
479 .init_machine
= realview_eb_init
,
480 #ifdef CONFIG_ZONE_DMA
481 .dma_zone_size
= SZ_256M
,
483 .restart
= realview_eb_restart
,