diff options
Diffstat (limited to 'kernel/arch/arm/mach-realview/realview_pb1176.c')
| -rw-r--r-- | kernel/arch/arm/mach-realview/realview_pb1176.c | 395 |
1 files changed, 395 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-realview/realview_pb1176.c b/kernel/arch/arm/mach-realview/realview_pb1176.c new file mode 100644 index 000000000..ce92c1823 --- /dev/null +++ b/kernel/arch/arm/mach-realview/realview_pb1176.c @@ -0,0 +1,395 @@ +/* + * linux/arch/arm/mach-realview/realview_pb1176.c + * + * Copyright (C) 2008 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 as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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/mtd/physmap.h> +#include <linux/mtd/partitions.h> +#include <linux/io.h> +#include <linux/irqchip/arm-gic.h> +#include <linux/platform_data/clk-realview.h> +#include <linux/reboot.h> +#include <linux/memblock.h> + +#include <mach/hardware.h> +#include <asm/irq.h> +#include <asm/mach-types.h> +#include <asm/pgtable.h> +#include <asm/hardware/cache-l2x0.h> + +#include <asm/mach/arch.h> +#include <asm/mach/flash.h> +#include <asm/mach/map.h> +#include <asm/mach/time.h> + +#include <mach/board-pb1176.h> +#include <mach/irqs.h> + +#include "core.h" + +static struct map_desc realview_pb1176_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_PB1176_GIC_CPU_BASE), + .pfn = __phys_to_pfn(REALVIEW_PB1176_GIC_CPU_BASE), + .length = SZ_4K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(REALVIEW_PB1176_GIC_DIST_BASE), + .pfn = __phys_to_pfn(REALVIEW_PB1176_GIC_DIST_BASE), + .length = SZ_4K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(REALVIEW_DC1176_GIC_CPU_BASE), + .pfn = __phys_to_pfn(REALVIEW_DC1176_GIC_CPU_BASE), + .length = SZ_4K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(REALVIEW_DC1176_GIC_DIST_BASE), + .pfn = __phys_to_pfn(REALVIEW_DC1176_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_PB1176_TIMER0_1_BASE), + .pfn = __phys_to_pfn(REALVIEW_PB1176_TIMER0_1_BASE), + .length = SZ_4K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(REALVIEW_PB1176_TIMER2_3_BASE), + .pfn = __phys_to_pfn(REALVIEW_PB1176_TIMER2_3_BASE), + .length = SZ_4K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(REALVIEW_PB1176_L220_BASE), + .pfn = __phys_to_pfn(REALVIEW_PB1176_L220_BASE), + .length = SZ_8K, + .type = MT_DEVICE, + }, +#ifdef CONFIG_DEBUG_LL + { + .virtual = IO_ADDRESS(REALVIEW_PB1176_UART0_BASE), + .pfn = __phys_to_pfn(REALVIEW_PB1176_UART0_BASE), + .length = SZ_4K, + .type = MT_DEVICE, + }, +#endif +}; + +static void __init realview_pb1176_map_io(void) +{ + iotable_init(realview_pb1176_io_desc, ARRAY_SIZE(realview_pb1176_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 PB1176 AMBA devices + */ +#define GPIO2_IRQ { IRQ_PB1176_GPIO2 } +#define GPIO3_IRQ { IRQ_PB1176_GPIO3 } +#define AACI_IRQ { IRQ_PB1176_AACI } +#define MMCI0_IRQ { IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B } +#define KMI0_IRQ { IRQ_PB1176_KMI0 } +#define KMI1_IRQ { IRQ_PB1176_KMI1 } +#define PB1176_SMC_IRQ { } +#define MPMC_IRQ { } +#define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD } +#define SCTL_IRQ { } +#define PB1176_WATCHDOG_IRQ { IRQ_DC1176_WATCHDOG } +#define PB1176_GPIO0_IRQ { IRQ_DC1176_GPIO0 } +#define GPIO1_IRQ { IRQ_PB1176_GPIO1 } +#define PB1176_RTC_IRQ { IRQ_DC1176_RTC } +#define SCI_IRQ { IRQ_PB1176_SCI } +#define PB1176_UART0_IRQ { IRQ_DC1176_UART0 } +#define PB1176_UART1_IRQ { IRQ_DC1176_UART1 } +#define PB1176_UART2_IRQ { IRQ_DC1176_UART2 } +#define PB1176_UART3_IRQ { IRQ_DC1176_UART3 } +#define PB1176_UART4_IRQ { IRQ_PB1176_UART4 } +#define PB1176_SSP_IRQ { IRQ_DC1176_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(uart4, "fpga:uart4", PB1176_UART4, NULL); + +/* DevChip Primecells */ +AHB_DEVICE(smc, "dev:smc", PB1176_SMC, NULL); +AHB_DEVICE(sctl, "dev:sctl", SCTL, NULL); +APB_DEVICE(wdog, "dev:wdog", PB1176_WATCHDOG, NULL); +APB_DEVICE(gpio0, "dev:gpio0", PB1176_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", PB1176_RTC, NULL); +APB_DEVICE(sci0, "dev:sci0", SCI, NULL); +APB_DEVICE(uart0, "dev:uart0", PB1176_UART0, NULL); +APB_DEVICE(uart1, "dev:uart1", PB1176_UART1, NULL); +APB_DEVICE(uart2, "dev:uart2", PB1176_UART2, NULL); +APB_DEVICE(uart3, "dev:uart3", PB1176_UART3, NULL); +APB_DEVICE(ssp0, "dev:ssp0", PB1176_SSP, &ssp0_plat_data); +AHB_DEVICE(clcd, "dev:clcd", PB1176_CLCD, &clcd_plat_data); + +static struct amba_device *amba_devs[] __initdata = { + &uart0_device, + &uart1_device, + &uart2_device, + &uart3_device, + &uart4_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 PB1176 platform devices + */ +static struct resource realview_pb1176_flash_resources[] = { + { + .start = REALVIEW_PB1176_FLASH_BASE, + .end = REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1, + .flags = IORESOURCE_MEM, + }, +#ifdef CONFIG_REALVIEW_PB1176_SECURE_FLASH + { + .start = REALVIEW_PB1176_SEC_FLASH_BASE, + .end = REALVIEW_PB1176_SEC_FLASH_BASE + REALVIEW_PB1176_SEC_FLASH_SIZE - 1, + .flags = IORESOURCE_MEM, + }, +#endif +}; + +static struct physmap_flash_data pb1176_rom_pdata = { + .probe_type = "map_rom", + .width = 4, + .nr_parts = 0, +}; + +static struct resource pb1176_rom_resources[] = { + /* + * This exposes the PB1176 DevChip ROM as an MTD ROM mapping. + * The reference manual states that this is actually a pseudo-ROM + * programmed in NVRAM. + */ + { + .start = REALVIEW_DC1176_ROM_BASE, + .end = REALVIEW_DC1176_ROM_BASE + SZ_16K - 1, + .flags = IORESOURCE_MEM, + } +}; + +static struct platform_device pb1176_rom_device = { + .name = "physmap-flash", + .id = -1, + .num_resources = ARRAY_SIZE(pb1176_rom_resources), + .resource = pb1176_rom_resources, + .dev = { + .platform_data = &pb1176_rom_pdata, + }, +}; + +static struct resource realview_pb1176_smsc911x_resources[] = { + [0] = { + .start = REALVIEW_PB1176_ETH_BASE, + .end = REALVIEW_PB1176_ETH_BASE + SZ_64K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_PB1176_ETH, + .end = IRQ_PB1176_ETH, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource realview_pb1176_isp1761_resources[] = { + [0] = { + .start = REALVIEW_PB1176_USB_BASE, + .end = REALVIEW_PB1176_USB_BASE + SZ_128K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_PB1176_USB, + .end = IRQ_PB1176_USB, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource pmu_resource = { + .start = IRQ_DC1176_CORE_PMU, + .end = IRQ_DC1176_CORE_PMU, + .flags = IORESOURCE_IRQ, +}; + +static struct platform_device pmu_device = { + .name = "armv6-pmu", + .id = -1, + .num_resources = 1, + .resource = &pmu_resource, +}; + +static struct resource char_lcd_resources[] = { + { + .start = REALVIEW_CHAR_LCD_BASE, + .end = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1), + .flags = IORESOURCE_MEM, + }, + { + .start = IRQ_PB1176_CHARLCD, + .end = IRQ_PB1176_CHARLCD, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device char_lcd_device = { + .name = "arm-charlcd", + .id = -1, + .num_resources = ARRAY_SIZE(char_lcd_resources), + .resource = char_lcd_resources, +}; + +static void __init gic_init_irq(void) +{ + /* ARM1176 DevChip GIC, primary */ + gic_init(0, IRQ_DC1176_GIC_START, + __io_address(REALVIEW_DC1176_GIC_DIST_BASE), + __io_address(REALVIEW_DC1176_GIC_CPU_BASE)); + + /* board GIC, secondary */ + gic_init(1, IRQ_PB1176_GIC_START, + __io_address(REALVIEW_PB1176_GIC_DIST_BASE), + __io_address(REALVIEW_PB1176_GIC_CPU_BASE)); + gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1); +} + +static void __init realview_pb1176_timer_init(void) +{ + timer0_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE); + timer1_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE) + 0x20; + timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE); + timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20; + + realview_clk_init(__io_address(REALVIEW_SYS_BASE), true); + realview_timer_init(IRQ_DC1176_TIMER0); +} + +static void realview_pb1176_restart(enum reboot_mode mode, const char *cmd) +{ + void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL); + void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK); + __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl); + __raw_writel(REALVIEW_PB1176_SYS_SOFT_RESET, reset_ctrl); + dsb(); +} + +static void realview_pb1176_fixup(struct tag *tags, char **from) +{ + /* + * RealView PB1176 only has 128MB of RAM mapped at 0. + */ + memblock_add(0, SZ_128M); +} + +static void __init realview_pb1176_init(void) +{ + int i; + +#ifdef CONFIG_CACHE_L2X0 + /* + * The PL220 needs to be manually configured as the hardware + * doesn't report the correct sizes. + * 128kB (16kB/way), 8-way associativity, event monitor and + * parity enabled, ignore share bit, no force write allocate + * Bits: .... ...0 0111 0011 0000 .... .... .... + */ + l2x0_init(__io_address(REALVIEW_PB1176_L220_BASE), 0x00730000, 0xfe000fff); +#endif + + realview_flash_register(realview_pb1176_flash_resources, + ARRAY_SIZE(realview_pb1176_flash_resources)); + platform_device_register(&pb1176_rom_device); + realview_eth_register(NULL, realview_pb1176_smsc911x_resources); + platform_device_register(&realview_i2c_device); + realview_usb_register(realview_pb1176_isp1761_resources); + platform_device_register(&pmu_device); + platform_device_register(&char_lcd_device); + platform_device_register(&realview_leds_device); + + for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { + struct amba_device *d = amba_devs[i]; + amba_device_register(d, &iomem_resource); + } +} + +MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176") + /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */ + .atag_offset = 0x100, + .fixup = realview_pb1176_fixup, + .map_io = realview_pb1176_map_io, + .init_early = realview_init_early, + .init_irq = gic_init_irq, + .init_time = realview_pb1176_timer_init, + .init_machine = realview_pb1176_init, +#ifdef CONFIG_ZONE_DMA + .dma_zone_size = SZ_256M, +#endif + .restart = realview_pb1176_restart, +MACHINE_END |