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