From: Markus Mayer Date: Fri, 21 Feb 2014 00:16:11 +0000 (-0800) Subject: ARM: bcm2835: Move to mach-bcm directory X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d30fe6272183f3cc8b9f3f111cd36271332e4cec;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git ARM: bcm2835: Move to mach-bcm directory Move the bcm2835 board file into the mach-bcm directory. This allows us to get rid of the mach-bcm2835 directory with the associated Kconfig and Makefile. Signed-off-by: Markus Mayer [swarren, adjust defconfig so ARCH_BCM2835 still gets enabled] Signed-off-by: Stephen Warren --- diff --git a/MAINTAINERS b/MAINTAINERS index b2cf5cfb4d29..c9324e742be2 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1875,7 +1875,7 @@ M: Stephen Warren L: linux-rpi-kernel@lists.infradead.org (moderated for non-subscribers) T: git git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-rpi.git S: Maintained -F: arch/arm/mach-bcm2835/ +F: arch/arm/mach-bcm/board_bcm2835.c F: arch/arm/boot/dts/bcm2835* F: arch/arm/configs/bcm2835_defconfig F: drivers/*/*bcm2835* diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index e25419817791..bde2237f91fa 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -936,8 +936,6 @@ source "arch/arm/mach-at91/Kconfig" source "arch/arm/mach-bcm/Kconfig" -source "arch/arm/mach-bcm2835/Kconfig" - source "arch/arm/mach-berlin/Kconfig" source "arch/arm/mach-clps711x/Kconfig" diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 08a9ef58d9c3..7743fb9717e5 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -143,7 +143,6 @@ textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000 # by CONFIG_* macro name. machine-$(CONFIG_ARCH_AT91) += at91 machine-$(CONFIG_ARCH_BCM) += bcm -machine-$(CONFIG_ARCH_BCM2835) += bcm2835 machine-$(CONFIG_ARCH_BERLIN) += berlin machine-$(CONFIG_ARCH_CLPS711X) += clps711x machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx diff --git a/arch/arm/configs/bcm2835_defconfig b/arch/arm/configs/bcm2835_defconfig index f43392dc2dcf..0302d293fba0 100644 --- a/arch/arm/configs/bcm2835_defconfig +++ b/arch/arm/configs/bcm2835_defconfig @@ -31,6 +31,7 @@ CONFIG_OPROFILE=y CONFIG_JUMP_LABEL=y CONFIG_ARCH_MULTI_V6=y # CONFIG_ARCH_MULTI_V7 is not set +CONFIG_ARCH_BCM=y CONFIG_ARCH_BCM2835=y CONFIG_PREEMPT_VOLUNTARY=y CONFIG_AEABI=y diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig index b1aa6a9b3bd1..4e466e9eef44 100644 --- a/arch/arm/mach-bcm/Kconfig +++ b/arch/arm/mach-bcm/Kconfig @@ -32,6 +32,22 @@ config ARCH_BCM_MOBILE BCM11130, BCM11140, BCM11351, BCM28145 and BCM28155 variants. +config ARCH_BCM2835 + bool "Broadcom BCM2835 family" if ARCH_MULTI_V6 + select ARCH_REQUIRE_GPIOLIB + select ARM_AMBA + select ARM_ERRATA_411920 + select ARM_TIMER_SP804 + select CLKDEV_LOOKUP + select CLKSRC_OF + select CPU_V6 + select GENERIC_CLOCKEVENTS + select PINCTRL + select PINCTRL_BCM2835 + help + This enables support for the Broadcom BCM2835 SoC. This SoC is + used in the Raspberry Pi and Roku 2 devices. + endmenu endif diff --git a/arch/arm/mach-bcm/Makefile b/arch/arm/mach-bcm/Makefile index c2ccd5a0f772..0ad293882079 100644 --- a/arch/arm/mach-bcm/Makefile +++ b/arch/arm/mach-bcm/Makefile @@ -11,5 +11,7 @@ # GNU General Public License for more details. obj-$(CONFIG_ARCH_BCM_MOBILE) := board_bcm281xx.o bcm_kona_smc.o bcm_kona_smc_asm.o kona.o +obj-$(CONFIG_ARCH_BCM2835) += board_bcm2835.o + plus_sec := $(call as-instr,.arch_extension sec,+sec) AFLAGS_bcm_kona_smc_asm.o :=-Wa,-march=armv7-a$(plus_sec) diff --git a/arch/arm/mach-bcm/board_bcm2835.c b/arch/arm/mach-bcm/board_bcm2835.c new file mode 100644 index 000000000000..70f2f3925f0e --- /dev/null +++ b/arch/arm/mach-bcm/board_bcm2835.c @@ -0,0 +1,137 @@ +/* + * 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 +#include +#include +#include +#include +#include + +#include +#include + +#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 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 -#include -#include -#include -#include -#include - -#include -#include - -#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