From 06cc5c1d4d7313bc864e9aac1d1cbd63d8b9ca4c Mon Sep 17 00:00:00 2001 From: Haifeng Yan Date: Fri, 11 Apr 2014 11:54:11 +0800 Subject: [PATCH] ARM: hisi: enable hix5hd2 SoC Enable support for the Hisilicon HiX5HD2 SoC. This HiX5HD2 SoC series support both single and dual Cortex-A9 cores. Add ARCH_HIX5HD2 to distinguish HiX5HD2 from Hi3xxx. They are different in implementation such as SMP, IPs integarted and earlycon configure. Signed-off-by: Haifeng Yan Signed-off-by: Jiancheng Xue Signed-off-by: Haojian Zhuang Acked-by: Wei Xu Signed-off-by: Olof Johansson --- .../bindings/arm/hisilicon/hisilicon.txt | 11 ++++ arch/arm/mach-hisi/Kconfig | 13 ++++- arch/arm/mach-hisi/Makefile | 2 +- arch/arm/mach-hisi/core.h | 5 ++ arch/arm/mach-hisi/headsmp.S | 16 +++++ arch/arm/mach-hisi/hisilicon.c | 12 ++++ arch/arm/mach-hisi/hotplug.c | 58 +++++++++++++++++++ arch/arm/mach-hisi/platsmp.c | 50 +++++++++++++++- 8 files changed, 161 insertions(+), 6 deletions(-) create mode 100644 arch/arm/mach-hisi/headsmp.S diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt index df0a452b8526..934f00025cc4 100644 --- a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt +++ b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt @@ -31,6 +31,17 @@ Example: reboot-offset = <0x4>; }; +----------------------------------------------------------------------- +Hisilicon CPU controller + +Required properties: +- compatible : "hisilicon,cpuctrl" +- reg : Register address and size + +The clock registers and power registers of secondary cores are defined +in CPU controller, especially in HIX5HD2 SoC. + +----------------------------------------------------------------------- PCTRL: Peripheral misc control register Required Properties: diff --git a/arch/arm/mach-hisi/Kconfig b/arch/arm/mach-hisi/Kconfig index da16efd3c927..90fdbb4ae00a 100644 --- a/arch/arm/mach-hisi/Kconfig +++ b/arch/arm/mach-hisi/Kconfig @@ -10,15 +10,24 @@ if ARCH_HISI menu "Hisilicon platform type" config ARCH_HI3xxx - bool "Hisilicon Hi36xx/Hi37xx family" if ARCH_MULTI_V7 + bool "Hisilicon Hi36xx family" if ARCH_MULTI_V7 select CACHE_L2X0 select HAVE_ARM_SCU if SMP select HAVE_ARM_TWD if SMP select PINCTRL select PINCTRL_SINGLE help - Support for Hisilicon Hi36xx/Hi37xx processor family + Support for Hisilicon Hi36xx SoC family +config ARCH_HIX5HD2 + bool "Hisilicon X5HD2 family" if ARCH_MULTI_V7 + select CACHE_L2X0 + select HAVE_ARM_SCU if SMP + select HAVE_ARM_TWD if SMP + select PINCTRL + select PINCTRL_SINGLE + help + Support for Hisilicon HIX5HD2 SoC family endmenu endif diff --git a/arch/arm/mach-hisi/Makefile b/arch/arm/mach-hisi/Makefile index 2ae1b59267c2..ee2506b9cde3 100644 --- a/arch/arm/mach-hisi/Makefile +++ b/arch/arm/mach-hisi/Makefile @@ -3,4 +3,4 @@ # obj-y += hisilicon.o -obj-$(CONFIG_SMP) += platsmp.o hotplug.o +obj-$(CONFIG_SMP) += platsmp.o hotplug.o headsmp.o diff --git a/arch/arm/mach-hisi/core.h b/arch/arm/mach-hisi/core.h index af23ec204538..88b1f487d065 100644 --- a/arch/arm/mach-hisi/core.h +++ b/arch/arm/mach-hisi/core.h @@ -12,4 +12,9 @@ extern void hi3xxx_cpu_die(unsigned int cpu); extern int hi3xxx_cpu_kill(unsigned int cpu); extern void hi3xxx_set_cpu(int cpu, bool enable); +extern void hix5hd2_secondary_startup(void); +extern struct smp_operations hix5hd2_smp_ops; +extern void hix5hd2_set_cpu(int cpu, bool enable); +extern void hix5hd2_cpu_die(unsigned int cpu); + #endif diff --git a/arch/arm/mach-hisi/headsmp.S b/arch/arm/mach-hisi/headsmp.S new file mode 100644 index 000000000000..278889c00b77 --- /dev/null +++ b/arch/arm/mach-hisi/headsmp.S @@ -0,0 +1,16 @@ +/* + * Copyright (c) 2014 Hisilicon Limited. + * Copyright (c) 2014 Linaro Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include +#include + + __CPUINIT + +ENTRY(hix5hd2_secondary_startup) + bl v7_invalidate_l1 + b secondary_startup diff --git a/arch/arm/mach-hisi/hisilicon.c b/arch/arm/mach-hisi/hisilicon.c index 741faf3e7100..2bfbe3f1392d 100644 --- a/arch/arm/mach-hisi/hisilicon.c +++ b/arch/arm/mach-hisi/hisilicon.c @@ -88,3 +88,15 @@ DT_MACHINE_START(HI3620, "Hisilicon Hi3620 (Flattened Device Tree)") .smp = smp_ops(hi3xxx_smp_ops), .restart = hi3xxx_restart, MACHINE_END + +static const char *hix5hd2_compat[] __initconst = { + "hisilicon,hix5hd2", + NULL, +}; + +DT_MACHINE_START(HIX5HD2_DT, "Hisilicon HIX5HD2 (Flattened Device Tree)") + .dt_compat = hix5hd2_compat, + .init_late = hi3xxx_init_late, + .smp = smp_ops(hix5hd2_smp_ops), + .restart = hi3xxx_restart, +MACHINE_END diff --git a/arch/arm/mach-hisi/hotplug.c b/arch/arm/mach-hisi/hotplug.c index abd441b0c604..84e6919f68c7 100644 --- a/arch/arm/mach-hisi/hotplug.c +++ b/arch/arm/mach-hisi/hotplug.c @@ -57,6 +57,14 @@ #define CPU0_NEON_SRST_REQ_EN (1 << 4) #define CPU0_SRST_REQ_EN (1 << 0) +#define HIX5HD2_PERI_CRG20 0x50 +#define CRG20_CPU1_RESET (1 << 17) + +#define HIX5HD2_PERI_PMC0 0x1000 +#define PMC0_CPU1_WAIT_MTCOMS_ACK (1 << 8) +#define PMC0_CPU1_PMC_ENABLE (1 << 7) +#define PMC0_CPU1_POWERDOWN (1 << 3) + enum { HI3620_CTRL, ERROR_CTRL, @@ -157,6 +165,50 @@ void hi3xxx_set_cpu(int cpu, bool enable) set_cpu_hi3620(cpu, enable); } +static bool hix5hd2_hotplug_init(void) +{ + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "hisilicon,cpuctrl"); + if (np) { + ctrl_base = of_iomap(np, 0); + return true; + } + return false; +} + +void hix5hd2_set_cpu(int cpu, bool enable) +{ + u32 val = 0; + + if (!ctrl_base) + if (!hix5hd2_hotplug_init()) + BUG(); + + if (enable) { + /* power on cpu1 */ + val = readl_relaxed(ctrl_base + HIX5HD2_PERI_PMC0); + val &= ~(PMC0_CPU1_WAIT_MTCOMS_ACK | PMC0_CPU1_POWERDOWN); + val |= PMC0_CPU1_PMC_ENABLE; + writel_relaxed(val, ctrl_base + HIX5HD2_PERI_PMC0); + /* unreset */ + val = readl_relaxed(ctrl_base + HIX5HD2_PERI_CRG20); + val &= ~CRG20_CPU1_RESET; + writel_relaxed(val, ctrl_base + HIX5HD2_PERI_CRG20); + } else { + /* power down cpu1 */ + val = readl_relaxed(ctrl_base + HIX5HD2_PERI_PMC0); + val |= PMC0_CPU1_PMC_ENABLE | PMC0_CPU1_POWERDOWN; + val &= ~PMC0_CPU1_WAIT_MTCOMS_ACK; + writel_relaxed(val, ctrl_base + HIX5HD2_PERI_PMC0); + + /* reset */ + val = readl_relaxed(ctrl_base + HIX5HD2_PERI_CRG20); + val |= CRG20_CPU1_RESET; + writel_relaxed(val, ctrl_base + HIX5HD2_PERI_CRG20); + } +} + static inline void cpu_enter_lowpower(void) { unsigned int v; @@ -199,4 +251,10 @@ int hi3xxx_cpu_kill(unsigned int cpu) hi3xxx_set_cpu(cpu, false); return 1; } + +void hix5hd2_cpu_die(unsigned int cpu) +{ + flush_cache_all(); + hix5hd2_set_cpu(cpu, false); +} #endif diff --git a/arch/arm/mach-hisi/platsmp.c b/arch/arm/mach-hisi/platsmp.c index 471f1ee3be2b..ecf7058d5c15 100644 --- a/arch/arm/mach-hisi/platsmp.c +++ b/arch/arm/mach-hisi/platsmp.c @@ -17,6 +17,8 @@ #include "core.h" +#define HIX5HD2_BOOT_ADDRESS 0xffff0000 + static void __iomem *ctrl_base; void hi3xxx_set_cpu_jump(int cpu, void *jump_addr) @@ -35,11 +37,9 @@ int hi3xxx_get_cpu_jump(int cpu) return readl_relaxed(ctrl_base + ((cpu - 1) << 2)); } -static void __init hi3xxx_smp_prepare_cpus(unsigned int max_cpus) +static void __init hisi_enable_scu_a9(void) { - struct device_node *np = NULL; unsigned long base = 0; - u32 offset = 0; void __iomem *scu_base = NULL; if (scu_a9_has_base()) { @@ -52,6 +52,14 @@ static void __init hi3xxx_smp_prepare_cpus(unsigned int max_cpus) scu_enable(scu_base); iounmap(scu_base); } +} + +static void __init hi3xxx_smp_prepare_cpus(unsigned int max_cpus) +{ + struct device_node *np = NULL; + u32 offset = 0; + + hisi_enable_scu_a9(); if (!ctrl_base) { np = of_find_compatible_node(NULL, NULL, "hisilicon,sysctrl"); if (!np) { @@ -87,3 +95,39 @@ struct smp_operations hi3xxx_smp_ops __initdata = { .cpu_kill = hi3xxx_cpu_kill, #endif }; + +static void __init hix5hd2_smp_prepare_cpus(unsigned int max_cpus) +{ + hisi_enable_scu_a9(); +} + +void hix5hd2_set_scu_boot_addr(phys_addr_t start_addr, phys_addr_t jump_addr) +{ + void __iomem *virt; + + virt = ioremap(start_addr, PAGE_SIZE); + + writel_relaxed(0xe51ff004, virt); /* ldr pc, [rc, #-4] */ + writel_relaxed(jump_addr, virt + 4); /* pc jump phy address */ + iounmap(virt); +} + +static int hix5hd2_boot_secondary(unsigned int cpu, struct task_struct *idle) +{ + phys_addr_t jumpaddr; + + jumpaddr = virt_to_phys(hix5hd2_secondary_startup); + hix5hd2_set_scu_boot_addr(HIX5HD2_BOOT_ADDRESS, jumpaddr); + hix5hd2_set_cpu(cpu, true); + arch_send_wakeup_ipi_mask(cpumask_of(cpu)); + return 0; +} + + +struct smp_operations hix5hd2_smp_ops __initdata = { + .smp_prepare_cpus = hix5hd2_smp_prepare_cpus, + .smp_boot_secondary = hix5hd2_boot_secondary, +#ifdef CONFIG_HOTPLUG_CPU + .cpu_die = hix5hd2_cpu_die, +#endif +}; -- 2.20.1