diff options
Diffstat (limited to 'arch/arm/mach-vexpress/v2m.c')
| -rw-r--r-- | arch/arm/mach-vexpress/v2m.c | 390 |
1 files changed, 390 insertions, 0 deletions
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c new file mode 100644 index 00000000000..6ff681a24ba --- /dev/null +++ b/arch/arm/mach-vexpress/v2m.c @@ -0,0 +1,390 @@ +/* + * Versatile Express V2M Motherboard Support + */ +#include <linux/device.h> +#include <linux/amba/bus.h> +#include <linux/amba/mmci.h> +#include <linux/io.h> +#include <linux/smp.h> +#include <linux/init.h> +#include <linux/of_address.h> +#include <linux/of_fdt.h> +#include <linux/of_irq.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/ata_platform.h> +#include <linux/smsc911x.h> +#include <linux/spinlock.h> +#include <linux/usb/isp1760.h> +#include <linux/mtd/physmap.h> +#include <linux/regulator/fixed.h> +#include <linux/regulator/machine.h> +#include <linux/vexpress.h> +#include <linux/clkdev.h> + +#include <asm/mach-types.h> +#include <asm/sizes.h> +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/time.h> +#include <asm/hardware/arm_timer.h> +#include <asm/hardware/cache-l2x0.h> +#include <asm/hardware/timer-sp.h> + +#include <mach/ct-ca9x4.h> +#include <mach/motherboard.h> + +#include <plat/sched_clock.h> +#include <plat/platsmp.h> + +#include "core.h" + +#define V2M_PA_CS0 0x40000000 +#define V2M_PA_CS1 0x44000000 +#define V2M_PA_CS2 0x48000000 +#define V2M_PA_CS3 0x4c000000 +#define V2M_PA_CS7 0x10000000 + +static struct map_desc v2m_io_desc[] __initdata = { + { + .virtual = V2M_PERIPH, + .pfn = __phys_to_pfn(V2M_PA_CS7), + .length = SZ_128K, + .type = MT_DEVICE, + }, +}; + +static void __init v2m_sp804_init(void __iomem *base, unsigned int irq) +{ + if (WARN_ON(!base || irq == NO_IRQ)) + return; + + sp804_clocksource_init(base + TIMER_2_BASE, "v2m-timer1"); + sp804_clockevents_init(base + TIMER_1_BASE, irq, "v2m-timer0"); +} + + +static struct resource v2m_pcie_i2c_resource = { + .start = V2M_SERIAL_BUS_PCI, + .end = V2M_SERIAL_BUS_PCI + SZ_4K - 1, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device v2m_pcie_i2c_device = { + .name = "versatile-i2c", + .id = 0, + .num_resources = 1, + .resource = &v2m_pcie_i2c_resource, +}; + +static struct resource v2m_ddc_i2c_resource = { + .start = V2M_SERIAL_BUS_DVI, + .end = V2M_SERIAL_BUS_DVI + SZ_4K - 1, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device v2m_ddc_i2c_device = { + .name = "versatile-i2c", + .id = 1, + .num_resources = 1, + .resource = &v2m_ddc_i2c_resource, +}; + +static struct resource v2m_eth_resources[] = { + { + .start = V2M_LAN9118, + .end = V2M_LAN9118 + SZ_64K - 1, + .flags = IORESOURCE_MEM, + }, { + .start = IRQ_V2M_LAN9118, + .end = IRQ_V2M_LAN9118, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct smsc911x_platform_config v2m_eth_config = { + .flags = SMSC911X_USE_32BIT, + .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH, + .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL, + .phy_interface = PHY_INTERFACE_MODE_MII, +}; + +static struct platform_device v2m_eth_device = { + .name = "smsc911x", + .id = -1, + .resource = v2m_eth_resources, + .num_resources = ARRAY_SIZE(v2m_eth_resources), + .dev.platform_data = &v2m_eth_config, +}; + +static struct regulator_consumer_supply v2m_eth_supplies[] = { + REGULATOR_SUPPLY("vddvario", "smsc911x"), + REGULATOR_SUPPLY("vdd33a", "smsc911x"), +}; + +static struct resource v2m_usb_resources[] = { + { + .start = V2M_ISP1761, + .end = V2M_ISP1761 + SZ_128K - 1, + .flags = IORESOURCE_MEM, + }, { + .start = IRQ_V2M_ISP1761, + .end = IRQ_V2M_ISP1761, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct isp1760_platform_data v2m_usb_config = { + .is_isp1761 = true, + .bus_width_16 = false, + .port1_otg = true, + .analog_oc = false, + .dack_polarity_high = false, + .dreq_polarity_high = false, +}; + +static struct platform_device v2m_usb_device = { + .name = "isp1760", + .id = -1, + .resource = v2m_usb_resources, + .num_resources = ARRAY_SIZE(v2m_usb_resources), + .dev.platform_data = &v2m_usb_config, +}; + +static struct physmap_flash_data v2m_flash_data = { + .width = 4, +}; + +static struct resource v2m_flash_resources[] = { + { + .start = V2M_NOR0, + .end = V2M_NOR0 + SZ_64M - 1, + .flags = IORESOURCE_MEM, + }, { + .start = V2M_NOR1, + .end = V2M_NOR1 + SZ_64M - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device v2m_flash_device = { + .name = "physmap-flash", + .id = -1, + .resource = v2m_flash_resources, + .num_resources = ARRAY_SIZE(v2m_flash_resources), + .dev.platform_data = &v2m_flash_data, +}; + +static struct pata_platform_info v2m_pata_data = { + .ioport_shift = 2, +}; + +static struct resource v2m_pata_resources[] = { + { + .start = V2M_CF, + .end = V2M_CF + 0xff, + .flags = IORESOURCE_MEM, + }, { + .start = V2M_CF + 0x100, + .end = V2M_CF + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device v2m_cf_device = { + .name = "pata_platform", + .id = -1, + .resource = v2m_pata_resources, + .num_resources = ARRAY_SIZE(v2m_pata_resources), + .dev.platform_data = &v2m_pata_data, +}; + +static struct mmci_platform_data v2m_mmci_data = { + .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, + .status = vexpress_get_mci_cardin, + .gpio_cd = -1, + .gpio_wp = -1, +}; + +static struct resource v2m_sysreg_resources[] = { + { + .start = V2M_SYSREGS, + .end = V2M_SYSREGS + 0xfff, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device v2m_sysreg_device = { + .name = "vexpress-sysreg", + .id = -1, + .resource = v2m_sysreg_resources, + .num_resources = ARRAY_SIZE(v2m_sysreg_resources), +}; + +static struct platform_device v2m_muxfpga_device = { + .name = "vexpress-muxfpga", + .id = 0, + .num_resources = 1, + .resource = (struct resource []) { + VEXPRESS_RES_FUNC(0, 7), + } +}; + +static struct platform_device v2m_shutdown_device = { + .name = "vexpress-shutdown", + .id = 0, + .num_resources = 1, + .resource = (struct resource []) { + VEXPRESS_RES_FUNC(0, 8), + } +}; + +static struct platform_device v2m_reboot_device = { + .name = "vexpress-reboot", + .id = 0, + .num_resources = 1, + .resource = (struct resource []) { + VEXPRESS_RES_FUNC(0, 9), + } +}; + +static struct platform_device v2m_dvimode_device = { + .name = "vexpress-dvimode", + .id = 0, + .num_resources = 1, + .resource = (struct resource []) { + VEXPRESS_RES_FUNC(0, 11), + } +}; + +static AMBA_APB_DEVICE(aaci, "mb:aaci", 0, V2M_AACI, IRQ_V2M_AACI, NULL); +static AMBA_APB_DEVICE(mmci, "mb:mmci", 0, V2M_MMCI, IRQ_V2M_MMCI, &v2m_mmci_data); +static AMBA_APB_DEVICE(kmi0, "mb:kmi0", 0, V2M_KMI0, IRQ_V2M_KMI0, NULL); +static AMBA_APB_DEVICE(kmi1, "mb:kmi1", 0, V2M_KMI1, IRQ_V2M_KMI1, NULL); +static AMBA_APB_DEVICE(uart0, "mb:uart0", 0, V2M_UART0, IRQ_V2M_UART0, NULL); +static AMBA_APB_DEVICE(uart1, "mb:uart1", 0, V2M_UART1, IRQ_V2M_UART1, NULL); +static AMBA_APB_DEVICE(uart2, "mb:uart2", 0, V2M_UART2, IRQ_V2M_UART2, NULL); +static AMBA_APB_DEVICE(uart3, "mb:uart3", 0, V2M_UART3, IRQ_V2M_UART3, NULL); +static AMBA_APB_DEVICE(wdt, "mb:wdt", 0, V2M_WDT, IRQ_V2M_WDT, NULL); +static AMBA_APB_DEVICE(rtc, "mb:rtc", 0, V2M_RTC, IRQ_V2M_RTC, NULL); + +static struct amba_device *v2m_amba_devs[] __initdata = { + &aaci_device, + &mmci_device, + &kmi0_device, + &kmi1_device, + &uart0_device, + &uart1_device, + &uart2_device, + &uart3_device, + &wdt_device, + &rtc_device, +}; + +static void __init v2m_timer_init(void) +{ + vexpress_clk_init(ioremap(V2M_SYSCTL, SZ_4K)); + v2m_sp804_init(ioremap(V2M_TIMER01, SZ_4K), IRQ_V2M_TIMER0); +} + +static void __init v2m_init_early(void) +{ + if (ct_desc->init_early) + ct_desc->init_early(); + versatile_sched_clock_init(vexpress_get_24mhz_clock_base(), 24000000); +} + +struct ct_desc *ct_desc; + +static struct ct_desc *ct_descs[] __initdata = { +#ifdef CONFIG_ARCH_VEXPRESS_CA9X4 + &ct_ca9x4_desc, +#endif +}; + +static void __init v2m_populate_ct_desc(void) +{ + int i; + u32 current_tile_id; + + ct_desc = NULL; + current_tile_id = vexpress_get_procid(VEXPRESS_SITE_MASTER) + & V2M_CT_ID_MASK; + + for (i = 0; i < ARRAY_SIZE(ct_descs) && !ct_desc; ++i) + if (ct_descs[i]->id == current_tile_id) + ct_desc = ct_descs[i]; + + if (!ct_desc) + panic("vexpress: this kernel does not support core tile ID 0x%08x when booting via ATAGs.\n" + "You may need a device tree blob or a different kernel to boot on this board.\n", + current_tile_id); +} + +static void __init v2m_map_io(void) +{ + iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc)); + vexpress_sysreg_early_init(ioremap(V2M_SYSREGS, SZ_4K)); + v2m_populate_ct_desc(); + ct_desc->map_io(); +} + +static void __init v2m_init_irq(void) +{ + ct_desc->init_irq(); +} + +static void __init v2m_init(void) +{ + int i; + + regulator_register_fixed(0, v2m_eth_supplies, + ARRAY_SIZE(v2m_eth_supplies)); + + platform_device_register(&v2m_sysreg_device); + platform_device_register(&v2m_pcie_i2c_device); + platform_device_register(&v2m_ddc_i2c_device); + platform_device_register(&v2m_flash_device); + platform_device_register(&v2m_cf_device); + platform_device_register(&v2m_eth_device); + platform_device_register(&v2m_usb_device); + + for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++) + amba_device_register(v2m_amba_devs[i], &iomem_resource); + + vexpress_syscfg_device_register(&v2m_muxfpga_device); + vexpress_syscfg_device_register(&v2m_shutdown_device); + vexpress_syscfg_device_register(&v2m_reboot_device); + vexpress_syscfg_device_register(&v2m_dvimode_device); + + ct_desc->init_tile(); +} + +MACHINE_START(VEXPRESS, "ARM-Versatile Express") + .atag_offset = 0x100, + .smp = smp_ops(vexpress_smp_ops), + .map_io = v2m_map_io, + .init_early = v2m_init_early, + .init_irq = v2m_init_irq, + .init_time = v2m_timer_init, + .init_machine = v2m_init, +MACHINE_END + +static void __init v2m_dt_init(void) +{ + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); +} + +static const char * const v2m_dt_match[] __initconst = { + "arm,vexpress", + NULL, +}; + +DT_MACHINE_START(VEXPRESS_DT, "ARM-Versatile Express") + .dt_compat = v2m_dt_match, + .l2c_aux_val = 0x00400000, + .l2c_aux_mask = 0xfe0fffff, + .smp = smp_ops(vexpress_smp_dt_ops), + .smp_init = smp_init_ops(vexpress_smp_init_ops), + .init_machine = v2m_dt_init, +MACHINE_END |