| /* |
| * arch/arm/mach-realview/realview_pbx.c |
| * |
| * Copyright (C) 2009 ARM Limited |
| * Copyright (C) 2000 Deep Blue Solutions Ltd |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/platform_device.h> |
| #include <linux/device.h> |
| #include <linux/amba/bus.h> |
| #include <linux/amba/pl061.h> |
| #include <linux/amba/mmci.h> |
| #include <linux/amba/pl022.h> |
| #include <linux/io.h> |
| #include <linux/platform_data/clk-realview.h> |
| |
| #include <asm/irq.h> |
| #include <asm/leds.h> |
| #include <asm/mach-types.h> |
| #include <asm/pmu.h> |
| #include <asm/smp_twd.h> |
| #include <asm/pgtable.h> |
| #include <asm/hardware/gic.h> |
| #include <asm/hardware/cache-l2x0.h> |
| |
| #include <asm/mach/arch.h> |
| #include <asm/mach/map.h> |
| #include <asm/mach/time.h> |
| |
| #include <mach/hardware.h> |
| #include <mach/board-pbx.h> |
| #include <mach/irqs.h> |
| |
| #include "core.h" |
| |
| static struct map_desc realview_pbx_io_desc[] __initdata = { |
| { |
| .virtual = IO_ADDRESS(REALVIEW_SYS_BASE), |
| .pfn = __phys_to_pfn(REALVIEW_SYS_BASE), |
| .length = SZ_4K, |
| .type = MT_DEVICE, |
| }, { |
| .virtual = IO_ADDRESS(REALVIEW_PBX_GIC_CPU_BASE), |
| .pfn = __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE), |
| .length = SZ_4K, |
| .type = MT_DEVICE, |
| }, { |
| .virtual = IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE), |
| .pfn = __phys_to_pfn(REALVIEW_PBX_GIC_DIST_BASE), |
| .length = SZ_4K, |
| .type = MT_DEVICE, |
| }, { |
| .virtual = IO_ADDRESS(REALVIEW_SCTL_BASE), |
| .pfn = __phys_to_pfn(REALVIEW_SCTL_BASE), |
| .length = SZ_4K, |
| .type = MT_DEVICE, |
| }, { |
| .virtual = IO_ADDRESS(REALVIEW_PBX_TIMER0_1_BASE), |
| .pfn = __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE), |
| .length = SZ_4K, |
| .type = MT_DEVICE, |
| }, { |
| .virtual = IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE), |
| .pfn = __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE), |
| .length = SZ_4K, |
| .type = MT_DEVICE, |
| }, |
| #ifdef CONFIG_PCI |
| { |
| .virtual = PCIX_UNIT_BASE, |
| .pfn = __phys_to_pfn(REALVIEW_PBX_PCI_BASE), |
| .length = REALVIEW_PBX_PCI_BASE_SIZE, |
| .type = MT_DEVICE, |
| }, |
| #endif |
| #ifdef CONFIG_DEBUG_LL |
| { |
| .virtual = IO_ADDRESS(REALVIEW_PBX_UART0_BASE), |
| .pfn = __phys_to_pfn(REALVIEW_PBX_UART0_BASE), |
| .length = SZ_4K, |
| .type = MT_DEVICE, |
| }, |
| #endif |
| }; |
| |
| static struct map_desc realview_local_io_desc[] __initdata = { |
| { |
| .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_SCU_BASE), |
| .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_SCU_BASE), |
| .length = SZ_4K, |
| .type = MT_DEVICE, |
| }, { |
| .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE), |
| .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE), |
| .length = SZ_4K, |
| .type = MT_DEVICE, |
| }, { |
| .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE), |
| .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE), |
| .length = SZ_8K, |
| .type = MT_DEVICE, |
| } |
| }; |
| |
| static void __init realview_pbx_map_io(void) |
| { |
| iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc)); |
| if (core_tile_pbx11mp() || core_tile_pbxa9mp()) |
| iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_io_desc)); |
| } |
| |
| static struct pl061_platform_data gpio0_plat_data = { |
| .gpio_base = 0, |
| }; |
| |
| static struct pl061_platform_data gpio1_plat_data = { |
| .gpio_base = 8, |
| }; |
| |
| static struct pl061_platform_data gpio2_plat_data = { |
| .gpio_base = 16, |
| }; |
| |
| static struct pl022_ssp_controller ssp0_plat_data = { |
| .bus_id = 0, |
| .enable_dma = 0, |
| .num_chipselect = 1, |
| }; |
| |
| /* |
| * RealView PBXCore AMBA devices |
| */ |
| |
| #define GPIO2_IRQ { IRQ_PBX_GPIO2 } |
| #define GPIO3_IRQ { IRQ_PBX_GPIO3 } |
| #define AACI_IRQ { IRQ_PBX_AACI } |
| #define MMCI0_IRQ { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B } |
| #define KMI0_IRQ { IRQ_PBX_KMI0 } |
| #define KMI1_IRQ { IRQ_PBX_KMI1 } |
| #define PBX_SMC_IRQ { } |
| #define MPMC_IRQ { } |
| #define PBX_CLCD_IRQ { IRQ_PBX_CLCD } |
| #define DMAC_IRQ { IRQ_PBX_DMAC } |
| #define SCTL_IRQ { } |
| #define PBX_WATCHDOG_IRQ { IRQ_PBX_WATCHDOG } |
| #define PBX_GPIO0_IRQ { IRQ_PBX_GPIO0 } |
| #define GPIO1_IRQ { IRQ_PBX_GPIO1 } |
| #define PBX_RTC_IRQ { IRQ_PBX_RTC } |
| #define SCI_IRQ { IRQ_PBX_SCI } |
| #define PBX_UART0_IRQ { IRQ_PBX_UART0 } |
| #define PBX_UART1_IRQ { IRQ_PBX_UART1 } |
| #define PBX_UART2_IRQ { IRQ_PBX_UART2 } |
| #define PBX_UART3_IRQ { IRQ_PBX_UART3 } |
| #define PBX_SSP_IRQ { IRQ_PBX_SSP } |
| |
| /* FPGA Primecells */ |
| APB_DEVICE(aaci, "fpga:aaci", AACI, NULL); |
| APB_DEVICE(mmc0, "fpga:mmc0", MMCI0, &realview_mmc0_plat_data); |
| APB_DEVICE(kmi0, "fpga:kmi0", KMI0, NULL); |
| APB_DEVICE(kmi1, "fpga:kmi1", KMI1, NULL); |
| APB_DEVICE(uart3, "fpga:uart3", PBX_UART3, NULL); |
| |
| /* DevChip Primecells */ |
| AHB_DEVICE(smc, "dev:smc", PBX_SMC, NULL); |
| AHB_DEVICE(sctl, "dev:sctl", SCTL, NULL); |
| APB_DEVICE(wdog, "dev:wdog", PBX_WATCHDOG, NULL); |
| APB_DEVICE(gpio0, "dev:gpio0", PBX_GPIO0, &gpio0_plat_data); |
| APB_DEVICE(gpio1, "dev:gpio1", GPIO1, &gpio1_plat_data); |
| APB_DEVICE(gpio2, "dev:gpio2", GPIO2, &gpio2_plat_data); |
| APB_DEVICE(rtc, "dev:rtc", PBX_RTC, NULL); |
| APB_DEVICE(sci0, "dev:sci0", SCI, NULL); |
| APB_DEVICE(uart0, "dev:uart0", PBX_UART0, NULL); |
| APB_DEVICE(uart1, "dev:uart1", PBX_UART1, NULL); |
| APB_DEVICE(uart2, "dev:uart2", PBX_UART2, NULL); |
| APB_DEVICE(ssp0, "dev:ssp0", PBX_SSP, &ssp0_plat_data); |
| |
| /* Primecells on the NEC ISSP chip */ |
| AHB_DEVICE(clcd, "issp:clcd", PBX_CLCD, &clcd_plat_data); |
| AHB_DEVICE(dmac, "issp:dmac", DMAC, NULL); |
| |
| static struct amba_device *amba_devs[] __initdata = { |
| &dmac_device, |
| &uart0_device, |
| &uart1_device, |
| &uart2_device, |
| &uart3_device, |
| &smc_device, |
| &clcd_device, |
| &sctl_device, |
| &wdog_device, |
| &gpio0_device, |
| &gpio1_device, |
| &gpio2_device, |
| &rtc_device, |
| &sci0_device, |
| &ssp0_device, |
| &aaci_device, |
| &mmc0_device, |
| &kmi0_device, |
| &kmi1_device, |
| }; |
| |
| /* |
| * RealView PB-X platform devices |
| */ |
| static struct resource realview_pbx_flash_resources[] = { |
| [0] = { |
| .start = REALVIEW_PBX_FLASH0_BASE, |
| .end = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| [1] = { |
| .start = REALVIEW_PBX_FLASH1_BASE, |
| .end = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| }; |
| |
| static struct resource realview_pbx_smsc911x_resources[] = { |
| [0] = { |
| .start = REALVIEW_PBX_ETH_BASE, |
| .end = REALVIEW_PBX_ETH_BASE + SZ_64K - 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| [1] = { |
| .start = IRQ_PBX_ETH, |
| .end = IRQ_PBX_ETH, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| static struct resource realview_pbx_isp1761_resources[] = { |
| [0] = { |
| .start = REALVIEW_PBX_USB_BASE, |
| .end = REALVIEW_PBX_USB_BASE + SZ_128K - 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| [1] = { |
| .start = IRQ_PBX_USB, |
| .end = IRQ_PBX_USB, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| static struct resource pmu_resources[] = { |
| [0] = { |
| .start = IRQ_PBX_PMU_CPU0, |
| .end = IRQ_PBX_PMU_CPU0, |
| .flags = IORESOURCE_IRQ, |
| }, |
| [1] = { |
| .start = IRQ_PBX_PMU_CPU1, |
| .end = IRQ_PBX_PMU_CPU1, |
| .flags = IORESOURCE_IRQ, |
| }, |
| [2] = { |
| .start = IRQ_PBX_PMU_CPU2, |
| .end = IRQ_PBX_PMU_CPU2, |
| .flags = IORESOURCE_IRQ, |
| }, |
| [3] = { |
| .start = IRQ_PBX_PMU_CPU3, |
| .end = IRQ_PBX_PMU_CPU3, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| static struct platform_device pmu_device = { |
| .name = "arm-pmu", |
| .id = ARM_PMU_DEVICE_CPU, |
| .num_resources = ARRAY_SIZE(pmu_resources), |
| .resource = pmu_resources, |
| }; |
| |
| static void __init gic_init_irq(void) |
| { |
| /* ARM PBX on-board GIC */ |
| if (core_tile_pbx11mp() || core_tile_pbxa9mp()) { |
| gic_init(0, 29, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE), |
| __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE)); |
| } else { |
| gic_init(0, IRQ_PBX_GIC_START, |
| __io_address(REALVIEW_PBX_GIC_DIST_BASE), |
| __io_address(REALVIEW_PBX_GIC_CPU_BASE)); |
| } |
| } |
| |
| #ifdef CONFIG_HAVE_ARM_TWD |
| static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, |
| REALVIEW_PBX_TILE_TWD_BASE, |
| IRQ_LOCALTIMER); |
| |
| static void __init realview_pbx_twd_init(void) |
| { |
| int err = twd_local_timer_register(&twd_local_timer); |
| if (err) |
| pr_err("twd_local_timer_register failed %d\n", err); |
| } |
| #else |
| #define realview_pbx_twd_init() do { } while(0) |
| #endif |
| |
| static void __init realview_pbx_timer_init(void) |
| { |
| timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE); |
| timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20; |
| timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE); |
| timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20; |
| |
| realview_clk_init(__io_address(REALVIEW_SYS_BASE), false); |
| realview_timer_init(IRQ_PBX_TIMER0_1); |
| realview_pbx_twd_init(); |
| } |
| |
| static struct sys_timer realview_pbx_timer = { |
| .init = realview_pbx_timer_init, |
| }; |
| |
| static void realview_pbx_fixup(struct tag *tags, char **from, |
| struct meminfo *meminfo) |
| { |
| #ifdef CONFIG_SPARSEMEM |
| /* |
| * Memory configuration with SPARSEMEM enabled on RealView PBX (see |
| * asm/mach/memory.h for more information). |
| */ |
| meminfo->bank[0].start = 0; |
| meminfo->bank[0].size = SZ_256M; |
| meminfo->bank[1].start = 0x20000000; |
| meminfo->bank[1].size = SZ_512M; |
| meminfo->bank[2].start = 0x80000000; |
| meminfo->bank[2].size = SZ_256M; |
| meminfo->nr_banks = 3; |
| #else |
| realview_fixup(tags, from, meminfo); |
| #endif |
| } |
| |
| static void realview_pbx_restart(char mode, const char *cmd) |
| { |
| void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL); |
| void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK); |
| |
| /* |
| * To reset, we hit the on-board reset register |
| * in the system FPGA |
| */ |
| __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl); |
| __raw_writel(0x00F0, reset_ctrl); |
| __raw_writel(0x00F4, reset_ctrl); |
| dsb(); |
| } |
| |
| static void __init realview_pbx_init(void) |
| { |
| int i; |
| |
| #ifdef CONFIG_CACHE_L2X0 |
| if (core_tile_pbxa9mp()) { |
| void __iomem *l2x0_base = |
| __io_address(REALVIEW_PBX_TILE_L220_BASE); |
| |
| /* set RAM latencies to 1 cycle for eASIC */ |
| writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL); |
| writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL); |
| |
| /* 16KB way size, 8-way associativity, parity disabled |
| * Bits: .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */ |
| l2x0_init(l2x0_base, 0x02520000, 0xc0000fff); |
| platform_device_register(&pmu_device); |
| } |
| #endif |
| |
| realview_flash_register(realview_pbx_flash_resources, |
| ARRAY_SIZE(realview_pbx_flash_resources)); |
| realview_eth_register(NULL, realview_pbx_smsc911x_resources); |
| platform_device_register(&realview_i2c_device); |
| platform_device_register(&realview_cf_device); |
| realview_usb_register(realview_pbx_isp1761_resources); |
| |
| for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { |
| struct amba_device *d = amba_devs[i]; |
| amba_device_register(d, &iomem_resource); |
| } |
| |
| #ifdef CONFIG_LEDS |
| leds_event = realview_leds_event; |
| #endif |
| } |
| |
| MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX") |
| /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */ |
| .atag_offset = 0x100, |
| .fixup = realview_pbx_fixup, |
| .map_io = realview_pbx_map_io, |
| .init_early = realview_init_early, |
| .init_irq = gic_init_irq, |
| .timer = &realview_pbx_timer, |
| .handle_irq = gic_handle_irq, |
| .init_machine = realview_pbx_init, |
| #ifdef CONFIG_ZONE_DMA |
| .dma_zone_size = SZ_256M, |
| #endif |
| .restart = realview_pbx_restart, |
| MACHINE_END |