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/irqchip/arm-gic.h>
30 #include <linux/platform_data/clk-realview.h>
31 #include <linux/reboot.h>
32 #include <linux/memblock.h>
35 #include <asm/mach-types.h>
36 #include <asm/smp_twd.h>
37 #include <asm/pgtable.h>
38 #include <asm/hardware/cache-l2x0.h>
40 #include <asm/mach/arch.h>
41 #include <asm/mach/map.h>
42 #include <asm/mach/time.h>
45 #include "board-pbx.h"
50 static struct map_desc realview_pbx_io_desc[] __initdata = {
52 .virtual = IO_ADDRESS(REALVIEW_SYS_BASE),
53 .pfn = __phys_to_pfn(REALVIEW_SYS_BASE),
57 .virtual = IO_ADDRESS(REALVIEW_PBX_GIC_CPU_BASE),
58 .pfn = __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE),
62 .virtual = IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE),
63 .pfn = __phys_to_pfn(REALVIEW_PBX_GIC_DIST_BASE),
67 .virtual = IO_ADDRESS(REALVIEW_SCTL_BASE),
68 .pfn = __phys_to_pfn(REALVIEW_SCTL_BASE),
72 .virtual = IO_ADDRESS(REALVIEW_PBX_TIMER0_1_BASE),
73 .pfn = __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE),
77 .virtual = IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE),
78 .pfn = __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE),
82 #ifdef CONFIG_DEBUG_LL
84 .virtual = IO_ADDRESS(REALVIEW_PBX_UART0_BASE),
85 .pfn = __phys_to_pfn(REALVIEW_PBX_UART0_BASE),
92 static struct map_desc realview_local_io_desc[] __initdata = {
94 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_SCU_BASE),
95 .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_SCU_BASE),
99 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE),
100 .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE),
104 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE),
105 .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE),
111 static void __init realview_pbx_map_io(void)
113 iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
114 if (core_tile_pbx11mp() || core_tile_pbxa9mp())
115 iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_io_desc));
118 static struct pl061_platform_data gpio0_plat_data = {
122 static struct pl061_platform_data gpio1_plat_data = {
126 static struct pl061_platform_data gpio2_plat_data = {
130 static struct pl022_ssp_controller ssp0_plat_data = {
137 * RealView PBXCore AMBA devices
140 #define GPIO2_IRQ { IRQ_PBX_GPIO2 }
141 #define GPIO3_IRQ { IRQ_PBX_GPIO3 }
142 #define AACI_IRQ { IRQ_PBX_AACI }
143 #define MMCI0_IRQ { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
144 #define KMI0_IRQ { IRQ_PBX_KMI0 }
145 #define KMI1_IRQ { IRQ_PBX_KMI1 }
146 #define PBX_SMC_IRQ { }
148 #define PBX_CLCD_IRQ { IRQ_PBX_CLCD }
149 #define DMAC_IRQ { IRQ_PBX_DMAC }
151 #define PBX_WATCHDOG_IRQ { IRQ_PBX_WATCHDOG }
152 #define PBX_GPIO0_IRQ { IRQ_PBX_GPIO0 }
153 #define GPIO1_IRQ { IRQ_PBX_GPIO1 }
154 #define PBX_RTC_IRQ { IRQ_PBX_RTC }
155 #define SCI_IRQ { IRQ_PBX_SCI }
156 #define PBX_UART0_IRQ { IRQ_PBX_UART0 }
157 #define PBX_UART1_IRQ { IRQ_PBX_UART1 }
158 #define PBX_UART2_IRQ { IRQ_PBX_UART2 }
159 #define PBX_UART3_IRQ { IRQ_PBX_UART3 }
160 #define PBX_SSP_IRQ { IRQ_PBX_SSP }
162 /* FPGA Primecells */
163 APB_DEVICE(aaci, "fpga:aaci", AACI, NULL);
164 APB_DEVICE(mmc0, "fpga:mmc0", MMCI0, &realview_mmc0_plat_data);
165 APB_DEVICE(kmi0, "fpga:kmi0", KMI0, NULL);
166 APB_DEVICE(kmi1, "fpga:kmi1", KMI1, NULL);
167 APB_DEVICE(uart3, "fpga:uart3", PBX_UART3, NULL);
169 /* DevChip Primecells */
170 AHB_DEVICE(smc, "dev:smc", PBX_SMC, NULL);
171 AHB_DEVICE(sctl, "dev:sctl", SCTL, NULL);
172 APB_DEVICE(wdog, "dev:wdog", PBX_WATCHDOG, NULL);
173 APB_DEVICE(gpio0, "dev:gpio0", PBX_GPIO0, &gpio0_plat_data);
174 APB_DEVICE(gpio1, "dev:gpio1", GPIO1, &gpio1_plat_data);
175 APB_DEVICE(gpio2, "dev:gpio2", GPIO2, &gpio2_plat_data);
176 APB_DEVICE(rtc, "dev:rtc", PBX_RTC, NULL);
177 APB_DEVICE(sci0, "dev:sci0", SCI, NULL);
178 APB_DEVICE(uart0, "dev:uart0", PBX_UART0, NULL);
179 APB_DEVICE(uart1, "dev:uart1", PBX_UART1, NULL);
180 APB_DEVICE(uart2, "dev:uart2", PBX_UART2, NULL);
181 APB_DEVICE(ssp0, "dev:ssp0", PBX_SSP, &ssp0_plat_data);
183 /* Primecells on the NEC ISSP chip */
184 AHB_DEVICE(clcd, "issp:clcd", PBX_CLCD, &clcd_plat_data);
185 AHB_DEVICE(dmac, "issp:dmac", DMAC, NULL);
187 static struct amba_device *amba_devs[] __initdata = {
210 * RealView PB-X platform devices
212 static struct resource realview_pbx_flash_resources[] = {
214 .start = REALVIEW_PBX_FLASH0_BASE,
215 .end = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
216 .flags = IORESOURCE_MEM,
219 .start = REALVIEW_PBX_FLASH1_BASE,
220 .end = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
221 .flags = IORESOURCE_MEM,
225 static struct resource realview_pbx_smsc911x_resources[] = {
227 .start = REALVIEW_PBX_ETH_BASE,
228 .end = REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
229 .flags = IORESOURCE_MEM,
232 .start = IRQ_PBX_ETH,
234 .flags = IORESOURCE_IRQ,
238 static struct resource realview_pbx_isp1761_resources[] = {
240 .start = REALVIEW_PBX_USB_BASE,
241 .end = REALVIEW_PBX_USB_BASE + SZ_128K - 1,
242 .flags = IORESOURCE_MEM,
245 .start = IRQ_PBX_USB,
247 .flags = IORESOURCE_IRQ,
251 static struct resource pmu_resources[] = {
253 .start = IRQ_PBX_PMU_CPU0,
254 .end = IRQ_PBX_PMU_CPU0,
255 .flags = IORESOURCE_IRQ,
258 .start = IRQ_PBX_PMU_CPU1,
259 .end = IRQ_PBX_PMU_CPU1,
260 .flags = IORESOURCE_IRQ,
263 .start = IRQ_PBX_PMU_CPU2,
264 .end = IRQ_PBX_PMU_CPU2,
265 .flags = IORESOURCE_IRQ,
268 .start = IRQ_PBX_PMU_CPU3,
269 .end = IRQ_PBX_PMU_CPU3,
270 .flags = IORESOURCE_IRQ,
274 static struct platform_device pmu_device = {
277 .num_resources = ARRAY_SIZE(pmu_resources),
278 .resource = pmu_resources,
281 static void __init gic_init_irq(void)
283 /* ARM PBX on-board GIC */
284 if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
285 gic_init(0, 29, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
286 __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
288 gic_init(0, IRQ_PBX_GIC_START,
289 __io_address(REALVIEW_PBX_GIC_DIST_BASE),
290 __io_address(REALVIEW_PBX_GIC_CPU_BASE));
294 #ifdef CONFIG_HAVE_ARM_TWD
295 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
296 REALVIEW_PBX_TILE_TWD_BASE,
299 static void __init realview_pbx_twd_init(void)
301 int err = twd_local_timer_register(&twd_local_timer);
303 pr_err("twd_local_timer_register failed %d\n", err);
306 #define realview_pbx_twd_init() do { } while(0)
309 static void __init realview_pbx_timer_init(void)
311 timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
312 timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
313 timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
314 timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
316 realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
317 realview_timer_init(IRQ_PBX_TIMER0_1);
318 realview_pbx_twd_init();
321 static void realview_pbx_fixup(struct tag *tags, char **from)
323 #ifdef CONFIG_SPARSEMEM
325 * Memory configuration with SPARSEMEM enabled on RealView PBX (see
326 * asm/mach/memory.h for more information).
329 memblock_add(0, SZ_256M);
330 memblock_add(0x20000000, SZ_512M);
331 memblock_add(0x80000000, SZ_256M);
333 realview_fixup(tags, from);
337 static void realview_pbx_restart(enum reboot_mode mode, const char *cmd)
339 void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
340 void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
343 * To reset, we hit the on-board reset register
346 __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
347 __raw_writel(0x00F0, reset_ctrl);
348 __raw_writel(0x00F4, reset_ctrl);
352 static void __init realview_pbx_init(void)
356 #ifdef CONFIG_CACHE_L2X0
357 if (core_tile_pbxa9mp()) {
358 void __iomem *l2x0_base =
359 __io_address(REALVIEW_PBX_TILE_L220_BASE);
361 /* set RAM latencies to 1 cycle for eASIC */
362 writel(0, l2x0_base + L310_TAG_LATENCY_CTRL);
363 writel(0, l2x0_base + L310_DATA_LATENCY_CTRL);
365 /* 16KB way size, 8-way associativity, parity disabled
366 * Bits: .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
367 l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
368 platform_device_register(&pmu_device);
372 realview_flash_register(realview_pbx_flash_resources,
373 ARRAY_SIZE(realview_pbx_flash_resources));
374 realview_eth_register(NULL, realview_pbx_smsc911x_resources);
375 platform_device_register(&realview_i2c_device);
376 platform_device_register(&realview_cf_device);
377 platform_device_register(&realview_leds_device);
378 realview_usb_register(realview_pbx_isp1761_resources);
380 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
381 struct amba_device *d = amba_devs[i];
382 amba_device_register(d, &iomem_resource);
386 MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
387 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
388 .atag_offset = 0x100,
389 .smp = smp_ops(realview_smp_ops),
390 .fixup = realview_pbx_fixup,
391 .map_io = realview_pbx_map_io,
392 .init_early = realview_init_early,
393 .init_irq = gic_init_irq,
394 .init_time = realview_pbx_timer_init,
395 .init_machine = realview_pbx_init,
396 #ifdef CONFIG_ZONE_DMA
397 .dma_zone_size = SZ_256M,
399 .restart = realview_pbx_restart,