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>
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_timer_init(IRQ_PBX_TIMER0_1);
323 realview_pbx_twd_init();
326 static struct sys_timer realview_pbx_timer = {
327 .init = realview_pbx_timer_init,
330 static void realview_pbx_fixup(struct tag *tags, char **from,
331 struct meminfo *meminfo)
333 #ifdef CONFIG_SPARSEMEM
335 * Memory configuration with SPARSEMEM enabled on RealView PBX (see
336 * asm/mach/memory.h for more information).
338 meminfo->bank[0].start = 0;
339 meminfo->bank[0].size = SZ_256M;
340 meminfo->bank[1].start = 0x20000000;
341 meminfo->bank[1].size = SZ_512M;
342 meminfo->bank[2].start = 0x80000000;
343 meminfo->bank[2].size = SZ_256M;
344 meminfo->nr_banks = 3;
346 realview_fixup(tags, from, meminfo);
350 static void realview_pbx_restart(char mode, const char *cmd)
352 void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
353 void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
356 * To reset, we hit the on-board reset register
359 __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
360 __raw_writel(0x00F0, reset_ctrl);
361 __raw_writel(0x00F4, reset_ctrl);
365 static void __init realview_pbx_init(void)
369 #ifdef CONFIG_CACHE_L2X0
370 if (core_tile_pbxa9mp()) {
371 void __iomem *l2x0_base =
372 __io_address(REALVIEW_PBX_TILE_L220_BASE);
374 /* set RAM latencies to 1 cycle for eASIC */
375 writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL);
376 writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL);
378 /* 16KB way size, 8-way associativity, parity disabled
379 * Bits: .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
380 l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
381 platform_device_register(&pmu_device);
385 realview_flash_register(realview_pbx_flash_resources,
386 ARRAY_SIZE(realview_pbx_flash_resources));
387 realview_eth_register(NULL, realview_pbx_smsc911x_resources);
388 platform_device_register(&realview_i2c_device);
389 platform_device_register(&realview_cf_device);
390 realview_usb_register(realview_pbx_isp1761_resources);
392 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
393 struct amba_device *d = amba_devs[i];
394 amba_device_register(d, &iomem_resource);
398 leds_event = realview_leds_event;
402 MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
403 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
404 .atag_offset = 0x100,
405 .fixup = realview_pbx_fixup,
406 .map_io = realview_pbx_map_io,
407 .init_early = realview_init_early,
408 .init_irq = gic_init_irq,
409 .timer = &realview_pbx_timer,
410 .handle_irq = gic_handle_irq,
411 .init_machine = realview_pbx_init,
412 #ifdef CONFIG_ZONE_DMA
413 .dma_zone_size = SZ_256M,
415 .restart = realview_pbx_restart,