diff options
Diffstat (limited to 'arch/arm/mach-highbank/highbank.c')
| -rw-r--r-- | arch/arm/mach-highbank/highbank.c | 182 |
1 files changed, 111 insertions, 71 deletions
diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c index 8394d512a40..8c35ae4ff17 100644 --- a/arch/arm/mach-highbank/highbank.c +++ b/arch/arm/mach-highbank/highbank.c @@ -15,41 +15,30 @@ */ #include <linux/clk.h> #include <linux/clkdev.h> +#include <linux/clocksource.h> +#include <linux/dma-mapping.h> +#include <linux/input.h> #include <linux/io.h> -#include <linux/irq.h> -#include <linux/irqdomain.h> +#include <linux/irqchip.h> +#include <linux/mailbox.h> #include <linux/of.h> #include <linux/of_irq.h> #include <linux/of_platform.h> #include <linux/of_address.h> -#include <linux/smp.h> - -#include <asm/cacheflush.h> -#include <asm/smp_plat.h> -#include <asm/smp_scu.h> -#include <asm/hardware/arm_timer.h> -#include <asm/hardware/timer-sp.h> -#include <asm/hardware/gic.h> +#include <linux/reboot.h> +#include <linux/amba/bus.h> +#include <linux/platform_device.h> + +#include <asm/psci.h> #include <asm/hardware/cache-l2x0.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> -#include <asm/mach/time.h> -#include <mach/irqs.h> #include "core.h" #include "sysregs.h" void __iomem *sregs_base; - -#define HB_SCU_VIRT_BASE 0xfee00000 -void __iomem *scu_base_addr = ((void __iomem *)(HB_SCU_VIRT_BASE)); - -static struct map_desc scu_io_desc __initdata = { - .virtual = HB_SCU_VIRT_BASE, - .pfn = 0, /* run-time */ - .length = SZ_4K, - .type = MT_DEVICE, -}; +void __iomem *scu_base_addr; static void __init highbank_scu_map_io(void) { @@ -58,91 +47,142 @@ static void __init highbank_scu_map_io(void) /* Get SCU base */ asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (base)); - scu_io_desc.pfn = __phys_to_pfn(base); - iotable_init(&scu_io_desc, 1); -} - -static void __init highbank_map_io(void) -{ - highbank_scu_map_io(); - highbank_lluart_map_io(); + scu_base_addr = ioremap(base, SZ_4K); } -#define HB_JUMP_TABLE_PHYS(cpu) (0x40 + (0x10 * (cpu))) -#define HB_JUMP_TABLE_VIRT(cpu) phys_to_virt(HB_JUMP_TABLE_PHYS(cpu)) -void highbank_set_cpu_jump(int cpu, void *jump_addr) +static void highbank_l2c310_write_sec(unsigned long val, unsigned reg) { - cpu = cpu_logical_map(cpu); - writel(virt_to_phys(jump_addr), HB_JUMP_TABLE_VIRT(cpu)); - __cpuc_flush_dcache_area(HB_JUMP_TABLE_VIRT(cpu), 16); - outer_clean_range(HB_JUMP_TABLE_PHYS(cpu), - HB_JUMP_TABLE_PHYS(cpu) + 15); + if (reg == L2X0_CTRL) + highbank_smc1(0x102, val); + else + WARN_ONCE(1, "Highbank L2C310: ignoring write to reg 0x%x\n", + reg); } -const static struct of_device_id irq_match[] = { - { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, }, - {} -}; - static void __init highbank_init_irq(void) { - of_irq_init(irq_match); - l2x0_of_init(0, ~0UL); + irqchip_init(); + + if (of_find_compatible_node(NULL, NULL, "arm,cortex-a9")) + highbank_scu_map_io(); } -static void __init highbank_timer_init(void) +static void highbank_power_off(void) { - int irq; - struct device_node *np; - void __iomem *timer_base; + highbank_set_pwr_shutdown(); - /* Map system registers */ - np = of_find_compatible_node(NULL, NULL, "calxeda,hb-sregs"); - sregs_base = of_iomap(np, 0); - WARN_ON(!sregs_base); + while (1) + cpu_do_idle(); +} - np = of_find_compatible_node(NULL, NULL, "arm,sp804"); - timer_base = of_iomap(np, 0); - WARN_ON(!timer_base); - irq = irq_of_parse_and_map(np, 0); +static int highbank_platform_notifier(struct notifier_block *nb, + unsigned long event, void *__dev) +{ + struct resource *res; + int reg = -1; + u32 val; + struct device *dev = __dev; + + if (event != BUS_NOTIFY_ADD_DEVICE) + return NOTIFY_DONE; + + if (of_device_is_compatible(dev->of_node, "calxeda,hb-ahci")) + reg = 0xc; + else if (of_device_is_compatible(dev->of_node, "calxeda,hb-sdhci")) + reg = 0x18; + else if (of_device_is_compatible(dev->of_node, "arm,pl330")) + reg = 0x20; + else if (of_device_is_compatible(dev->of_node, "calxeda,hb-xgmac")) { + res = platform_get_resource(to_platform_device(dev), + IORESOURCE_MEM, 0); + if (res) { + if (res->start == 0xfff50000) + reg = 0; + else if (res->start == 0xfff51000) + reg = 4; + } + } + + if (reg < 0) + return NOTIFY_DONE; + + if (of_property_read_bool(dev->of_node, "dma-coherent")) { + val = readl(sregs_base + reg); + writel(val | 0xff01, sregs_base + reg); + set_dma_ops(dev, &arm_coherent_dma_ops); + } + + return NOTIFY_OK; +} - highbank_clocks_init(); +static struct notifier_block highbank_amba_nb = { + .notifier_call = highbank_platform_notifier, +}; - sp804_clocksource_init(timer_base + 0x20, "timer1"); - sp804_clockevents_init(timer_base, irq, "timer0"); -} +static struct notifier_block highbank_platform_nb = { + .notifier_call = highbank_platform_notifier, +}; -static struct sys_timer highbank_timer = { - .init = highbank_timer_init, +static struct platform_device highbank_cpuidle_device = { + .name = "cpuidle-calxeda", }; -static void highbank_power_off(void) +static int hb_keys_notifier(struct notifier_block *nb, unsigned long event, void *data) { - hignbank_set_pwr_shutdown(); - scu_power_mode(scu_base_addr, SCU_PM_POWEROFF); + u32 key = *(u32 *)data; - while (1) - cpu_do_idle(); + if (event != 0x1000) + return 0; + + if (key == KEY_POWER) + orderly_poweroff(false); + else if (key == 0xffff) + ctrl_alt_del(); + + return 0; } +static struct notifier_block hb_keys_nb = { + .notifier_call = hb_keys_notifier, +}; static void __init highbank_init(void) { + struct device_node *np; + + /* Map system registers */ + np = of_find_compatible_node(NULL, NULL, "calxeda,hb-sregs"); + sregs_base = of_iomap(np, 0); + WARN_ON(!sregs_base); + pm_power_off = highbank_power_off; + highbank_pm_init(); + + bus_register_notifier(&platform_bus_type, &highbank_platform_nb); + bus_register_notifier(&amba_bustype, &highbank_amba_nb); + + pl320_ipc_register_notifier(&hb_keys_nb); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); + + if (psci_ops.cpu_suspend) + platform_device_register(&highbank_cpuidle_device); } static const char *highbank_match[] __initconst = { "calxeda,highbank", + "calxeda,ecx-2000", NULL, }; DT_MACHINE_START(HIGHBANK, "Highbank") - .map_io = highbank_map_io, +#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE) + .dma_zone_size = (4ULL * SZ_1G), +#endif + .l2c_aux_val = 0, + .l2c_aux_mask = ~0, + .l2c_write_sec = highbank_l2c310_write_sec, .init_irq = highbank_init_irq, - .timer = &highbank_timer, - .handle_irq = gic_handle_irq, .init_machine = highbank_init, .dt_compat = highbank_match, .restart = highbank_restart, |