diff options
Diffstat (limited to 'arch/arm/mach-exynos/common.c')
| -rw-r--r-- | arch/arm/mach-exynos/common.c | 96 |
1 files changed, 67 insertions, 29 deletions
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c index 4bc1c49c69f1..745e304ad0de 100644 --- a/arch/arm/mach-exynos/common.c +++ b/arch/arm/mach-exynos/common.c @@ -23,11 +23,11 @@ #include <linux/of_irq.h> #include <linux/export.h> #include <linux/irqdomain.h> -#include <linux/irqchip.h> #include <linux/of_address.h> #include <linux/clocksource.h> #include <linux/clk-provider.h> #include <linux/irqchip/arm-gic.h> +#include <linux/irqchip/chained_irq.h> #include <asm/proc-fns.h> #include <asm/exception.h> @@ -120,17 +120,6 @@ static struct map_desc exynos_iodesc[] __initdata = { }, }; -#ifdef CONFIG_ARCH_EXYNOS5 -static struct map_desc exynos5440_iodesc[] __initdata = { - { - .virtual = (unsigned long)S5P_VA_CHIPID, - .pfn = __phys_to_pfn(EXYNOS5440_PA_CHIPID), - .length = SZ_4K, - .type = MT_DEVICE, - }, -}; -#endif - static struct map_desc exynos4_iodesc[] __initdata = { { .virtual = (unsigned long)S3C_VA_SYS, @@ -233,6 +222,33 @@ static struct map_desc exynos4_iodesc1[] __initdata = { }, }; +static struct map_desc exynos4210_iodesc[] __initdata = { + { + .virtual = (unsigned long)S5P_VA_SYSRAM_NS, + .pfn = __phys_to_pfn(EXYNOS4210_PA_SYSRAM_NS), + .length = SZ_4K, + .type = MT_DEVICE, + }, +}; + +static struct map_desc exynos4x12_iodesc[] __initdata = { + { + .virtual = (unsigned long)S5P_VA_SYSRAM_NS, + .pfn = __phys_to_pfn(EXYNOS4x12_PA_SYSRAM_NS), + .length = SZ_4K, + .type = MT_DEVICE, + }, +}; + +static struct map_desc exynos5250_iodesc[] __initdata = { + { + .virtual = (unsigned long)S5P_VA_SYSRAM_NS, + .pfn = __phys_to_pfn(EXYNOS5250_PA_SYSRAM_NS), + .length = SZ_4K, + .type = MT_DEVICE, + }, +}; + static struct map_desc exynos5_iodesc[] __initdata = { { .virtual = (unsigned long)S3C_VA_SYS, @@ -321,6 +337,31 @@ void __init exynos_init_late(void) exynos_pm_late_initcall(); } +#ifdef CONFIG_OF +int __init exynos_fdt_map_chipid(unsigned long node, const char *uname, + int depth, void *data) +{ + struct map_desc iodesc; + __be32 *reg; + unsigned long len; + + if (!of_flat_dt_is_compatible(node, "samsung,exynos4210-chipid") && + !of_flat_dt_is_compatible(node, "samsung,exynos5440-clock")) + return 0; + + reg = of_get_flat_dt_prop(node, "reg", &len); + if (reg == NULL || len != (sizeof(unsigned long) * 2)) + return 0; + + iodesc.pfn = __phys_to_pfn(be32_to_cpu(reg[0])); + iodesc.length = be32_to_cpu(reg[1]) - 1; + iodesc.virtual = (unsigned long)S5P_VA_CHIPID; + iodesc.type = MT_DEVICE; + iotable_init(&iodesc, 1); + return 1; +} +#endif + /* * exynos_map_io * @@ -329,19 +370,12 @@ void __init exynos_init_late(void) void __init exynos_init_io(struct map_desc *mach_desc, int size) { - struct map_desc *iodesc = exynos_iodesc; - int iodesc_sz = ARRAY_SIZE(exynos_iodesc); -#if defined(CONFIG_OF) && defined(CONFIG_ARCH_EXYNOS5) - unsigned long root = of_get_flat_dt_root(); - - /* initialize the io descriptors we need for initialization */ - if (of_flat_dt_is_compatible(root, "samsung,exynos5440")) { - iodesc = exynos5440_iodesc; - iodesc_sz = ARRAY_SIZE(exynos5440_iodesc); - } +#ifdef CONFIG_OF + if (initial_boot_params) + of_scan_flat_dt(exynos_fdt_map_chipid, NULL); + else #endif - - iotable_init(iodesc, iodesc_sz); + iotable_init(exynos_iodesc, ARRAY_SIZE(exynos_iodesc)); if (mach_desc) iotable_init(mach_desc, size); @@ -361,8 +395,10 @@ static void __init exynos4_map_io(void) else iotable_init(exynos4_iodesc1, ARRAY_SIZE(exynos4_iodesc1)); - if (!IS_ENABLED(CONFIG_EXYNOS_ATAGS)) - return + if (soc_is_exynos4210()) + iotable_init(exynos4210_iodesc, ARRAY_SIZE(exynos4210_iodesc)); + if (soc_is_exynos4212() || soc_is_exynos4412()) + iotable_init(exynos4x12_iodesc, ARRAY_SIZE(exynos4x12_iodesc)); /* initialize device information early */ exynos4_default_sdhci0(); @@ -396,6 +432,9 @@ static void __init exynos4_map_io(void) static void __init exynos5_map_io(void) { iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc)); + + if (soc_is_exynos5250()) + iotable_init(exynos5250_iodesc, ARRAY_SIZE(exynos5250_iodesc)); } static void __init exynos5440_map_io(void) @@ -449,6 +488,8 @@ void __init exynos4_init_irq(void) if (!of_have_populated_dt()) combiner_init(S5P_VA_COMBINER_BASE, NULL, max_combiner_nr(), COMBINER_IRQ(0, 0)); + + gic_arch_extn.irq_set_wake = s3c_irq_wake; } void __init exynos5_init_irq(void) @@ -548,8 +589,6 @@ static void __init exynos4_init_uarts(struct s3c2410_uartcfg *cfg, int no) s3c24xx_init_uartdevs("exynos4210-uart", exynos4_uart_resources, cfg, no); } - -#ifdef CONFIG_EXYNOS_ATAGS static void __iomem *exynos_eint_base; static DEFINE_SPINLOCK(eint_lock); @@ -856,7 +895,6 @@ static int __init exynos_init_irq_eint(void) return 0; } arch_initcall(exynos_init_irq_eint); -#endif static struct resource exynos4_pmu_resource[] = { DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU), |
