diff options
Diffstat (limited to 'arch/arm/mach-bcm2835')
| -rw-r--r-- | arch/arm/mach-bcm2835/Kconfig | 15 | ||||
| -rw-r--r-- | arch/arm/mach-bcm2835/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-bcm2835/bcm2835.c | 137 |
3 files changed, 0 insertions, 153 deletions
diff --git a/arch/arm/mach-bcm2835/Kconfig b/arch/arm/mach-bcm2835/Kconfig deleted file mode 100644 index d1f9612f8c15..000000000000 --- a/arch/arm/mach-bcm2835/Kconfig +++ /dev/null @@ -1,15 +0,0 @@ -config ARCH_BCM2835 - bool "Broadcom BCM2835 family" if ARCH_MULTI_V6 - select ARCH_REQUIRE_GPIOLIB - select ARM_AMBA - select ARM_ERRATA_411920 - select ARM_TIMER_SP804 - select CLKDEV_LOOKUP - select CLKSRC_OF - select CPU_V6 - select GENERIC_CLOCKEVENTS - select PINCTRL - select PINCTRL_BCM2835 - help - This enables support for the Broadcom BCM2835 SoC. This SoC is - used in the Raspberry Pi and Roku 2 devices. diff --git a/arch/arm/mach-bcm2835/Makefile b/arch/arm/mach-bcm2835/Makefile deleted file mode 100644 index 4c3892fe02c3..000000000000 --- a/arch/arm/mach-bcm2835/Makefile +++ /dev/null @@ -1 +0,0 @@ -obj-y += bcm2835.o diff --git a/arch/arm/mach-bcm2835/bcm2835.c b/arch/arm/mach-bcm2835/bcm2835.c deleted file mode 100644 index 70f2f3925f0e..000000000000 --- a/arch/arm/mach-bcm2835/bcm2835.c +++ /dev/null @@ -1,137 +0,0 @@ -/* - * Copyright (C) 2010 Broadcom - * - * 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. - */ - -#include <linux/delay.h> -#include <linux/init.h> -#include <linux/irqchip.h> -#include <linux/of_address.h> -#include <linux/of_platform.h> -#include <linux/clk/bcm2835.h> - -#include <asm/mach/arch.h> -#include <asm/mach/map.h> - -#define PM_RSTC 0x1c -#define PM_RSTS 0x20 -#define PM_WDOG 0x24 - -#define PM_PASSWORD 0x5a000000 -#define PM_RSTC_WRCFG_MASK 0x00000030 -#define PM_RSTC_WRCFG_FULL_RESET 0x00000020 -#define PM_RSTS_HADWRH_SET 0x00000040 - -#define BCM2835_PERIPH_PHYS 0x20000000 -#define BCM2835_PERIPH_VIRT 0xf0000000 -#define BCM2835_PERIPH_SIZE SZ_16M - -static void __iomem *wdt_regs; - -/* - * The machine restart method can be called from an atomic context so we won't - * be able to ioremap the regs then. - */ -static void bcm2835_setup_restart(void) -{ - struct device_node *np = of_find_compatible_node(NULL, NULL, - "brcm,bcm2835-pm-wdt"); - if (WARN(!np, "unable to setup watchdog restart")) - return; - - wdt_regs = of_iomap(np, 0); - WARN(!wdt_regs, "failed to remap watchdog regs"); -} - -static void bcm2835_restart(enum reboot_mode mode, const char *cmd) -{ - u32 val; - - if (!wdt_regs) - return; - - /* use a timeout of 10 ticks (~150us) */ - writel_relaxed(10 | PM_PASSWORD, wdt_regs + PM_WDOG); - val = readl_relaxed(wdt_regs + PM_RSTC); - val &= ~PM_RSTC_WRCFG_MASK; - val |= PM_PASSWORD | PM_RSTC_WRCFG_FULL_RESET; - writel_relaxed(val, wdt_regs + PM_RSTC); - - /* No sleeping, possibly atomic. */ - mdelay(1); -} - -/* - * We can't really power off, but if we do the normal reset scheme, and - * indicate to bootcode.bin not to reboot, then most of the chip will be - * powered off. - */ -static void bcm2835_power_off(void) -{ - u32 val; - - /* - * We set the watchdog hard reset bit here to distinguish this reset - * from the normal (full) reset. bootcode.bin will not reboot after a - * hard reset. - */ - val = readl_relaxed(wdt_regs + PM_RSTS); - val &= ~PM_RSTC_WRCFG_MASK; - val |= PM_PASSWORD | PM_RSTS_HADWRH_SET; - writel_relaxed(val, wdt_regs + PM_RSTS); - - /* Continue with normal reset mechanism */ - bcm2835_restart(REBOOT_HARD, ""); -} - -static struct map_desc io_map __initdata = { - .virtual = BCM2835_PERIPH_VIRT, - .pfn = __phys_to_pfn(BCM2835_PERIPH_PHYS), - .length = BCM2835_PERIPH_SIZE, - .type = MT_DEVICE -}; - -static void __init bcm2835_map_io(void) -{ - iotable_init(&io_map, 1); -} - -static void __init bcm2835_init(void) -{ - int ret; - - bcm2835_setup_restart(); - if (wdt_regs) - pm_power_off = bcm2835_power_off; - - bcm2835_init_clocks(); - - ret = of_platform_populate(NULL, of_default_bus_match_table, NULL, - NULL); - if (ret) { - pr_err("of_platform_populate failed: %d\n", ret); - BUG(); - } -} - -static const char * const bcm2835_compat[] = { - "brcm,bcm2835", - NULL -}; - -DT_MACHINE_START(BCM2835, "BCM2835") - .map_io = bcm2835_map_io, - .init_irq = irqchip_init, - .init_machine = bcm2835_init, - .restart = bcm2835_restart, - .dt_compat = bcm2835_compat -MACHINE_END |