diff options
| -rw-r--r-- | arch/arm/mach-ux500/Makefile | 3 | ||||
| -rw-r--r-- | arch/arm/mach-ux500/cache-l2x0.c | 60 | ||||
| -rw-r--r-- | arch/arm/mach-ux500/cpu-db8500.c | 87 | ||||
| -rw-r--r-- | arch/arm/mach-ux500/cpu.c | 67 | ||||
| -rw-r--r-- | arch/arm/mach-ux500/setup.h | 10 |
5 files changed, 88 insertions, 139 deletions
diff --git a/arch/arm/mach-ux500/Makefile b/arch/arm/mach-ux500/Makefile index 753d3ee..56d0eb6 100644 --- a/arch/arm/mach-ux500/Makefile +++ b/arch/arm/mach-ux500/Makefile @@ -2,8 +2,7 @@ # Makefile for the linux kernel, U8500 machine. # -obj-y := cpu.o pm.o -obj-$(CONFIG_CACHE_L2X0) += cache-l2x0.o +obj-y := pm.o obj-$(CONFIG_UX500_SOC_DB8500) += cpu-db8500.o obj-$(CONFIG_MACH_MOP500) += board-mop500-audio.o obj-$(CONFIG_SMP) += platsmp.o diff --git a/arch/arm/mach-ux500/cache-l2x0.c b/arch/arm/mach-ux500/cache-l2x0.c deleted file mode 100644 index adec59c..0000000 --- a/arch/arm/mach-ux500/cache-l2x0.c +++ /dev/null @@ -1,60 +0,0 @@ -/* - * Copyright (C) ST-Ericsson SA 2011 - * - * License terms: GNU General Public License (GPL) version 2 - */ - -#include <linux/io.h> -#include <linux/of.h> -#include <linux/of_address.h> - -#include <asm/outercache.h> -#include <asm/hardware/cache-l2x0.h> - -#include "db8500-regs.h" - -static int __init ux500_l2x0_unlock(void) -{ - int i; - struct device_node *np; - void __iomem *l2x0_base; - - np = of_find_compatible_node(NULL, NULL, "arm,pl310-cache"); - l2x0_base = of_iomap(np, 0); - of_node_put(np); - if (!l2x0_base) - return -ENODEV; - - /* - * Unlock Data and Instruction Lock if locked. Ux500 U-Boot versions - * apparently locks both caches before jumping to the kernel. The - * l2x0 core will not touch the unlock registers if the l2x0 is - * already enabled, so we do it right here instead. The PL310 has - * 8 sets of registers, one per possible CPU. - */ - for (i = 0; i < 8; i++) { - writel_relaxed(0x0, l2x0_base + L2X0_LOCKDOWN_WAY_D_BASE + - i * L2X0_LOCKDOWN_STRIDE); - writel_relaxed(0x0, l2x0_base + L2X0_LOCKDOWN_WAY_I_BASE + - i * L2X0_LOCKDOWN_STRIDE); - } - iounmap(l2x0_base); - return 0; -} - -static void ux500_l2c310_write_sec(unsigned long val, unsigned reg) -{ - /* - * We can't write to secure registers as we are in non-secure - * mode, until we have some SMI service available. - */ -} - -void __init ux500_l2x0_init(void) -{ - /* Unlock before init */ - ux500_l2x0_unlock(); - outer_cache.write_sec = ux500_l2c310_write_sec; - - return 0; -} diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c index c9c9832..46b1da1 100644 --- a/arch/arm/mach-ux500/cpu-db8500.c +++ b/arch/arm/mach-ux500/cpu-db8500.c @@ -12,22 +12,109 @@ #include <linux/init.h> #include <linux/device.h> #include <linux/amba/bus.h> +#include <linux/init.h> #include <linux/interrupt.h> #include <linux/irq.h> +#include <linux/irqchip.h> +#include <linux/irqchip/arm-gic.h> +#include <linux/mfd/dbx500-prcmu.h> +#include <linux/platform_data/arm-ux500-pm.h> #include <linux/platform_device.h> #include <linux/io.h> #include <linux/of.h> +#include <linux/of_address.h> #include <linux/of_platform.h> #include <linux/perf/arm_pmu.h> #include <linux/regulator/machine.h> +#include <asm/outercache.h> +#include <asm/hardware/cache-l2x0.h> #include <asm/mach/map.h> +#include <asm/mach/arch.h> #include "setup.h" #include "board-mop500.h" #include "db8500-regs.h" +static int __init ux500_l2x0_unlock(void) +{ + int i; + struct device_node *np; + void __iomem *l2x0_base; + + np = of_find_compatible_node(NULL, NULL, "arm,pl310-cache"); + l2x0_base = of_iomap(np, 0); + of_node_put(np); + if (!l2x0_base) + return -ENODEV; + + /* + * Unlock Data and Instruction Lock if locked. Ux500 U-Boot versions + * apparently locks both caches before jumping to the kernel. The + * l2x0 core will not touch the unlock registers if the l2x0 is + * already enabled, so we do it right here instead. The PL310 has + * 8 sets of registers, one per possible CPU. + */ + for (i = 0; i < 8; i++) { + writel_relaxed(0x0, l2x0_base + L2X0_LOCKDOWN_WAY_D_BASE + + i * L2X0_LOCKDOWN_STRIDE); + writel_relaxed(0x0, l2x0_base + L2X0_LOCKDOWN_WAY_I_BASE + + i * L2X0_LOCKDOWN_STRIDE); + } + iounmap(l2x0_base); + return 0; +} + +static void ux500_l2c310_write_sec(unsigned long val, unsigned reg) +{ + /* + * We can't write to secure registers as we are in non-secure + * mode, until we have some SMI service available. + */ +} + +/* + * FIXME: Should we set up the GPIO domain here? + * + * The problem is that we cannot put the interrupt resources into the platform + * device until the irqdomain has been added. Right now, we set the GIC interrupt + * domain from init_irq(), then load the gpio driver from + * core_initcall(nmk_gpio_init) and add the platform devices from + * arch_initcall(customize_machine). + * + * This feels fragile because it depends on the gpio device getting probed + * _before_ any device uses the gpio interrupts. +*/ +static void __init ux500_init_irq(void) +{ + struct device_node *np; + struct resource r; + + irqchip_init(); + np = of_find_compatible_node(NULL, NULL, "stericsson,db8500-prcmu"); + of_address_to_resource(np, 0, &r); + of_node_put(np); + if (!r.start) { + pr_err("could not find PRCMU base resource\n"); + return; + } + prcmu_early_init(r.start, r.end-r.start); + ux500_pm_init(r.start, r.end-r.start); + + /* Unlock before init */ + ux500_l2x0_unlock(); + outer_cache.write_sec = ux500_l2c310_write_sec; +} + +static void ux500_restart(enum reboot_mode mode, const char *cmd) +{ + local_irq_disable(); + local_fiq_disable(); + + prcmu_system_reset(0); +} + /* * The PMU IRQ lines of two cores are wired together into a single interrupt. * Bounce the interrupt to the other core if it's not ours. diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c deleted file mode 100644 index a34af28..0000000 --- a/arch/arm/mach-ux500/cpu.c +++ /dev/null @@ -1,67 +0,0 @@ -/* - * Copyright (C) ST-Ericsson SA 2010 - * - * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson - * Author: Lee Jones <lee.jones@linaro.org> for ST-Ericsson - * License terms: GNU General Public License (GPL) version 2 - */ - -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/mfd/dbx500-prcmu.h> -#include <linux/sys_soc.h> -#include <linux/err.h> -#include <linux/slab.h> -#include <linux/stat.h> -#include <linux/of.h> -#include <linux/of_irq.h> -#include <linux/of_address.h> -#include <linux/irq.h> -#include <linux/irqchip.h> -#include <linux/irqchip/arm-gic.h> -#include <linux/platform_data/arm-ux500-pm.h> - -#include <asm/mach/map.h> - -#include "setup.h" - -#include "board-mop500.h" -#include "db8500-regs.h" - -void ux500_restart(enum reboot_mode mode, const char *cmd) -{ - local_irq_disable(); - local_fiq_disable(); - - prcmu_system_reset(0); -} - -/* - * FIXME: Should we set up the GPIO domain here? - * - * The problem is that we cannot put the interrupt resources into the platform - * device until the irqdomain has been added. Right now, we set the GIC interrupt - * domain from init_irq(), then load the gpio driver from - * core_initcall(nmk_gpio_init) and add the platform devices from - * arch_initcall(customize_machine). - * - * This feels fragile because it depends on the gpio device getting probed - * _before_ any device uses the gpio interrupts. -*/ -void __init ux500_init_irq(void) -{ - struct device_node *np; - struct resource r; - - irqchip_init(); - np = of_find_compatible_node(NULL, NULL, "stericsson,db8500-prcmu"); - of_address_to_resource(np, 0, &r); - of_node_put(np); - if (!r.start) { - pr_err("could not find PRCMU base resource\n"); - return; - } - prcmu_early_init(r.start, r.end-r.start); - ux500_pm_init(r.start, r.end-r.start); - ux500_l2x0_init(); -} diff --git a/arch/arm/mach-ux500/setup.h b/arch/arm/mach-ux500/setup.h index 85b7819..988e7c7 100644 --- a/arch/arm/mach-ux500/setup.h +++ b/arch/arm/mach-ux500/setup.h @@ -11,16 +11,6 @@ #ifndef __ASM_ARCH_SETUP_H #define __ASM_ARCH_SETUP_H -#include <asm/mach/arch.h> -#include <linux/init.h> - - -void ux500_l2x0_init(void); - -void ux500_restart(enum reboot_mode mode, const char *cmd); - -extern void __init ux500_init_irq(void); - extern void ux500_cpu_die(unsigned int cpu); #endif /* __ASM_ARCH_SETUP_H */ |
