From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/arm/mach-realview/realview_eb.c | 485 ++++++++++++++++++++++++++++ 1 file changed, 485 insertions(+) create mode 100644 kernel/arch/arm/mach-realview/realview_eb.c (limited to 'kernel/arch/arm/mach-realview/realview_eb.c') diff --git a/kernel/arch/arm/mach-realview/realview_eb.c b/kernel/arch/arm/mach-realview/realview_eb.c new file mode 100644 index 000000000..b3869cbbc --- /dev/null +++ b/kernel/arch/arm/mach-realview/realview_eb.c @@ -0,0 +1,485 @@ +/* + * linux/arch/arm/mach-realview/realview_eb.c + * + * Copyright (C) 2004 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +#include "core.h" + +static struct map_desc realview_eb_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_EB_GIC_CPU_BASE), + .pfn = __phys_to_pfn(REALVIEW_EB_GIC_CPU_BASE), + .length = SZ_4K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(REALVIEW_EB_GIC_DIST_BASE), + .pfn = __phys_to_pfn(REALVIEW_EB_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_EB_TIMER0_1_BASE), + .pfn = __phys_to_pfn(REALVIEW_EB_TIMER0_1_BASE), + .length = SZ_4K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(REALVIEW_EB_TIMER2_3_BASE), + .pfn = __phys_to_pfn(REALVIEW_EB_TIMER2_3_BASE), + .length = SZ_4K, + .type = MT_DEVICE, + }, +#ifdef CONFIG_DEBUG_LL + { + .virtual = IO_ADDRESS(REALVIEW_EB_UART0_BASE), + .pfn = __phys_to_pfn(REALVIEW_EB_UART0_BASE), + .length = SZ_4K, + .type = MT_DEVICE, + } +#endif +}; + +static struct map_desc realview_eb11mp_io_desc[] __initdata = { + { + .virtual = IO_ADDRESS(REALVIEW_EB11MP_PRIV_MEM_BASE), + .pfn = __phys_to_pfn(REALVIEW_EB11MP_PRIV_MEM_BASE), + .length = REALVIEW_EB11MP_PRIV_MEM_SIZE, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(REALVIEW_EB11MP_L220_BASE), + .pfn = __phys_to_pfn(REALVIEW_EB11MP_L220_BASE), + .length = SZ_8K, + .type = MT_DEVICE, + } +}; + +static void __init realview_eb_map_io(void) +{ + iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc)); + if (core_tile_eb11mp() || core_tile_a9mp()) + iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_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 EB AMBA devices + */ + +/* + * These devices are connected via the core APB bridge + */ +#define GPIO2_IRQ { IRQ_EB_GPIO2 } +#define GPIO3_IRQ { IRQ_EB_GPIO3 } + +#define AACI_IRQ { IRQ_EB_AACI } +#define MMCI0_IRQ { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B } +#define KMI0_IRQ { IRQ_EB_KMI0 } +#define KMI1_IRQ { IRQ_EB_KMI1 } + +/* + * These devices are connected directly to the multi-layer AHB switch + */ +#define EB_SMC_IRQ { } +#define MPMC_IRQ { } +#define EB_CLCD_IRQ { IRQ_EB_CLCD } +#define DMAC_IRQ { IRQ_EB_DMA } + +/* + * These devices are connected via the core APB bridge + */ +#define SCTL_IRQ { } +#define EB_WATCHDOG_IRQ { IRQ_EB_WDOG } +#define EB_GPIO0_IRQ { IRQ_EB_GPIO0 } +#define GPIO1_IRQ { IRQ_EB_GPIO1 } +#define EB_RTC_IRQ { IRQ_EB_RTC } + +/* + * These devices are connected via the DMA APB bridge + */ +#define SCI_IRQ { IRQ_EB_SCI } +#define EB_UART0_IRQ { IRQ_EB_UART0 } +#define EB_UART1_IRQ { IRQ_EB_UART1 } +#define EB_UART2_IRQ { IRQ_EB_UART2 } +#define EB_UART3_IRQ { IRQ_EB_UART3 } +#define EB_SSP_IRQ { IRQ_EB_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", EB_UART3, NULL); + +/* DevChip Primecells */ +AHB_DEVICE(smc, "dev:smc", EB_SMC, NULL); +AHB_DEVICE(clcd, "dev:clcd", EB_CLCD, &clcd_plat_data); +AHB_DEVICE(dmac, "dev:dmac", DMAC, NULL); +AHB_DEVICE(sctl, "dev:sctl", SCTL, NULL); +APB_DEVICE(wdog, "dev:wdog", EB_WATCHDOG, NULL); +APB_DEVICE(gpio0, "dev:gpio0", EB_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", EB_RTC, NULL); +APB_DEVICE(sci0, "dev:sci0", SCI, NULL); +APB_DEVICE(uart0, "dev:uart0", EB_UART0, NULL); +APB_DEVICE(uart1, "dev:uart1", EB_UART1, NULL); +APB_DEVICE(uart2, "dev:uart2", EB_UART2, NULL); +APB_DEVICE(ssp0, "dev:ssp0", EB_SSP, &ssp0_plat_data); + +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 EB platform devices + */ +static struct resource realview_eb_flash_resource = { + .start = REALVIEW_EB_FLASH_BASE, + .end = REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1, + .flags = IORESOURCE_MEM, +}; + +static struct resource realview_eb_eth_resources[] = { + [0] = { + .start = REALVIEW_EB_ETH_BASE, + .end = REALVIEW_EB_ETH_BASE + SZ_64K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_EB_ETH, + .end = IRQ_EB_ETH, + .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE, + }, +}; + +/* + * Detect and register the correct Ethernet device. RealView/EB rev D + * platforms use the newer SMSC LAN9118 Ethernet chip + */ +static int eth_device_register(void) +{ + void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K); + const char *name = NULL; + u32 idrev; + + if (!eth_addr) + return -ENOMEM; + + idrev = readl(eth_addr + 0x50); + if ((idrev & 0xFFFF0000) != 0x01180000) + /* SMSC LAN9118 not present, use LAN91C111 instead */ + name = "smc91x"; + + iounmap(eth_addr); + return realview_eth_register(name, realview_eb_eth_resources); +} + +static struct resource realview_eb_isp1761_resources[] = { + [0] = { + .start = REALVIEW_EB_USB_BASE, + .end = REALVIEW_EB_USB_BASE + SZ_128K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_EB_USB, + .end = IRQ_EB_USB, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource pmu_resources[] = { + [0] = { + .start = IRQ_EB11MP_PMU_CPU0, + .end = IRQ_EB11MP_PMU_CPU0, + .flags = IORESOURCE_IRQ, + }, + [1] = { + .start = IRQ_EB11MP_PMU_CPU1, + .end = IRQ_EB11MP_PMU_CPU1, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .start = IRQ_EB11MP_PMU_CPU2, + .end = IRQ_EB11MP_PMU_CPU2, + .flags = IORESOURCE_IRQ, + }, + [3] = { + .start = IRQ_EB11MP_PMU_CPU3, + .end = IRQ_EB11MP_PMU_CPU3, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device pmu_device = { + .id = -1, + .num_resources = ARRAY_SIZE(pmu_resources), + .resource = pmu_resources, +}; + +static struct resource char_lcd_resources[] = { + { + .start = REALVIEW_CHAR_LCD_BASE, + .end = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1), + .flags = IORESOURCE_MEM, + }, + { + .start = IRQ_EB_CHARLCD, + .end = IRQ_EB_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) +{ + if (core_tile_eb11mp() || core_tile_a9mp()) { + unsigned int pldctrl; + + /* new irq mode */ + writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK)); + pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1); + pldctrl |= 0x00800000; + writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1); + writel(0x00000000, __io_address(REALVIEW_SYS_LOCK)); + + /* core tile GIC, primary */ + gic_init(0, 29, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE), + __io_address(REALVIEW_EB11MP_GIC_CPU_BASE)); + +#ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB + /* board GIC, secondary */ + gic_init(1, 96, __io_address(REALVIEW_EB_GIC_DIST_BASE), + __io_address(REALVIEW_EB_GIC_CPU_BASE)); + gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1); +#endif + } else { + /* board GIC, primary */ + gic_init(0, 29, __io_address(REALVIEW_EB_GIC_DIST_BASE), + __io_address(REALVIEW_EB_GIC_CPU_BASE)); + } +} + +/* + * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile + */ +static void realview_eb11mp_fixup(void) +{ + /* AMBA devices */ + dmac_device.irq[0] = IRQ_EB11MP_DMA; + uart0_device.irq[0] = IRQ_EB11MP_UART0; + uart1_device.irq[0] = IRQ_EB11MP_UART1; + uart2_device.irq[0] = IRQ_EB11MP_UART2; + uart3_device.irq[0] = IRQ_EB11MP_UART3; + clcd_device.irq[0] = IRQ_EB11MP_CLCD; + wdog_device.irq[0] = IRQ_EB11MP_WDOG; + gpio0_device.irq[0] = IRQ_EB11MP_GPIO0; + gpio1_device.irq[0] = IRQ_EB11MP_GPIO1; + gpio2_device.irq[0] = IRQ_EB11MP_GPIO2; + rtc_device.irq[0] = IRQ_EB11MP_RTC; + sci0_device.irq[0] = IRQ_EB11MP_SCI; + ssp0_device.irq[0] = IRQ_EB11MP_SSP; + aaci_device.irq[0] = IRQ_EB11MP_AACI; + mmc0_device.irq[0] = IRQ_EB11MP_MMCI0A; + mmc0_device.irq[1] = IRQ_EB11MP_MMCI0B; + kmi0_device.irq[0] = IRQ_EB11MP_KMI0; + kmi1_device.irq[0] = IRQ_EB11MP_KMI1; + + /* platform devices */ + realview_eb_eth_resources[1].start = IRQ_EB11MP_ETH; + realview_eb_eth_resources[1].end = IRQ_EB11MP_ETH; + realview_eb_isp1761_resources[1].start = IRQ_EB11MP_USB; + realview_eb_isp1761_resources[1].end = IRQ_EB11MP_USB; +} + +#ifdef CONFIG_HAVE_ARM_TWD +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, + REALVIEW_EB11MP_TWD_BASE, + IRQ_LOCALTIMER); + +static void __init realview_eb_twd_init(void) +{ + if (core_tile_eb11mp() || core_tile_a9mp()) { + int err = twd_local_timer_register(&twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); + } +} +#else +#define realview_eb_twd_init() do { } while(0) +#endif + +static void __init realview_eb_timer_init(void) +{ + unsigned int timer_irq; + + timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE); + timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20; + timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE); + timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20; + + if (core_tile_eb11mp() || core_tile_a9mp()) + timer_irq = IRQ_EB11MP_TIMER0_1; + else + timer_irq = IRQ_EB_TIMER0_1; + + realview_clk_init(__io_address(REALVIEW_SYS_BASE), false); + realview_timer_init(timer_irq); + realview_eb_twd_init(); +} + +static void realview_eb_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); + + /* + * To reset, we hit the on-board reset register + * in the system FPGA + */ + __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl); + if (core_tile_eb11mp()) + __raw_writel(0x0008, reset_ctrl); + dsb(); +} + +static void __init realview_eb_init(void) +{ + int i; + + if (core_tile_eb11mp() || core_tile_a9mp()) { + realview_eb11mp_fixup(); + +#ifdef CONFIG_CACHE_L2X0 + /* + * The PL220 needs to be manually configured as the hardware + * doesn't report the correct sizes. + * 1MB (128KB/way), 8-way associativity, event monitor and + * parity enabled, ignore share bit, no force write allocate + * Bits: .... ...0 0111 1001 0000 .... .... .... + */ + l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff); +#endif + pmu_device.name = core_tile_a9mp() ? "armv7-pmu" : "armv6-pmu"; + platform_device_register(&pmu_device); + } + + realview_flash_register(&realview_eb_flash_resource, 1); + platform_device_register(&realview_i2c_device); + platform_device_register(&char_lcd_device); + platform_device_register(&realview_leds_device); + eth_device_register(); + realview_usb_register(realview_eb_isp1761_resources); + + 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_EB, "ARM-RealView EB") + /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */ + .atag_offset = 0x100, + .smp = smp_ops(realview_smp_ops), + .fixup = realview_fixup, + .map_io = realview_eb_map_io, + .init_early = realview_init_early, + .init_irq = gic_init_irq, + .init_time = realview_eb_timer_init, + .init_machine = realview_eb_init, +#ifdef CONFIG_ZONE_DMA + .dma_zone_size = SZ_256M, +#endif + .restart = realview_eb_restart, +MACHINE_END -- cgit 1.2.3-korg