692 строки
16 KiB
C
692 строки
16 KiB
C
/*
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* Versatile Express V2M Motherboard Support
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*/
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#include <linux/device.h>
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#include <linux/amba/bus.h>
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#include <linux/amba/mmci.h>
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#include <linux/io.h>
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#include <linux/init.h>
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#include <linux/of_address.h>
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#include <linux/of_fdt.h>
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#include <linux/of_irq.h>
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#include <linux/of_platform.h>
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#include <linux/platform_device.h>
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#include <linux/ata_platform.h>
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#include <linux/smsc911x.h>
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#include <linux/spinlock.h>
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#include <linux/usb/isp1760.h>
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#include <linux/clkdev.h>
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#include <linux/mtd/physmap.h>
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#include <asm/arch_timer.h>
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#include <asm/mach-types.h>
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#include <asm/sizes.h>
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#include <asm/smp_twd.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/time.h>
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#include <asm/hardware/arm_timer.h>
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#include <asm/hardware/cache-l2x0.h>
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#include <asm/hardware/gic.h>
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#include <asm/hardware/timer-sp.h>
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#include <asm/hardware/sp810.h>
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#include <mach/ct-ca9x4.h>
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#include <mach/motherboard.h>
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#include <plat/sched_clock.h>
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#include "core.h"
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#define V2M_PA_CS0 0x40000000
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#define V2M_PA_CS1 0x44000000
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#define V2M_PA_CS2 0x48000000
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#define V2M_PA_CS3 0x4c000000
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#define V2M_PA_CS7 0x10000000
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static struct map_desc v2m_io_desc[] __initdata = {
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{
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.virtual = V2M_PERIPH,
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.pfn = __phys_to_pfn(V2M_PA_CS7),
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.length = SZ_128K,
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.type = MT_DEVICE,
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},
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};
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static void __iomem *v2m_sysreg_base;
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static void __init v2m_sysctl_init(void __iomem *base)
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{
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u32 scctrl;
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if (WARN_ON(!base))
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return;
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/* Select 1MHz TIMCLK as the reference clock for SP804 timers */
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scctrl = readl(base + SCCTRL);
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scctrl |= SCCTRL_TIMEREN0SEL_TIMCLK;
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scctrl |= SCCTRL_TIMEREN1SEL_TIMCLK;
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writel(scctrl, base + SCCTRL);
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}
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static void __init v2m_sp804_init(void __iomem *base, unsigned int irq)
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{
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if (WARN_ON(!base || irq == NO_IRQ))
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return;
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writel(0, base + TIMER_1_BASE + TIMER_CTRL);
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writel(0, base + TIMER_2_BASE + TIMER_CTRL);
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sp804_clocksource_init(base + TIMER_2_BASE, "v2m-timer1");
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sp804_clockevents_init(base + TIMER_1_BASE, irq, "v2m-timer0");
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}
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static void __init v2m_timer_init(void)
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{
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v2m_sysctl_init(ioremap(V2M_SYSCTL, SZ_4K));
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v2m_sp804_init(ioremap(V2M_TIMER01, SZ_4K), IRQ_V2M_TIMER0);
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}
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static struct sys_timer v2m_timer = {
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.init = v2m_timer_init,
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};
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static DEFINE_SPINLOCK(v2m_cfg_lock);
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int v2m_cfg_write(u32 devfn, u32 data)
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{
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/* Configuration interface broken? */
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u32 val;
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printk("%s: writing %08x to %08x\n", __func__, data, devfn);
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devfn |= SYS_CFG_START | SYS_CFG_WRITE;
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spin_lock(&v2m_cfg_lock);
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val = readl(v2m_sysreg_base + V2M_SYS_CFGSTAT);
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writel(val & ~SYS_CFG_COMPLETE, v2m_sysreg_base + V2M_SYS_CFGSTAT);
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writel(data, v2m_sysreg_base + V2M_SYS_CFGDATA);
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writel(devfn, v2m_sysreg_base + V2M_SYS_CFGCTRL);
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do {
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val = readl(v2m_sysreg_base + V2M_SYS_CFGSTAT);
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} while (val == 0);
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spin_unlock(&v2m_cfg_lock);
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return !!(val & SYS_CFG_ERR);
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}
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int v2m_cfg_read(u32 devfn, u32 *data)
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{
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u32 val;
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devfn |= SYS_CFG_START;
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spin_lock(&v2m_cfg_lock);
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writel(0, v2m_sysreg_base + V2M_SYS_CFGSTAT);
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writel(devfn, v2m_sysreg_base + V2M_SYS_CFGCTRL);
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mb();
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do {
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cpu_relax();
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val = readl(v2m_sysreg_base + V2M_SYS_CFGSTAT);
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} while (val == 0);
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*data = readl(v2m_sysreg_base + V2M_SYS_CFGDATA);
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spin_unlock(&v2m_cfg_lock);
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return !!(val & SYS_CFG_ERR);
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}
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void __init v2m_flags_set(u32 data)
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{
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writel(~0, v2m_sysreg_base + V2M_SYS_FLAGSCLR);
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writel(data, v2m_sysreg_base + V2M_SYS_FLAGSSET);
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}
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static struct resource v2m_pcie_i2c_resource = {
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.start = V2M_SERIAL_BUS_PCI,
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.end = V2M_SERIAL_BUS_PCI + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device v2m_pcie_i2c_device = {
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.name = "versatile-i2c",
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.id = 0,
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.num_resources = 1,
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.resource = &v2m_pcie_i2c_resource,
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};
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static struct resource v2m_ddc_i2c_resource = {
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.start = V2M_SERIAL_BUS_DVI,
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.end = V2M_SERIAL_BUS_DVI + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device v2m_ddc_i2c_device = {
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.name = "versatile-i2c",
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.id = 1,
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.num_resources = 1,
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.resource = &v2m_ddc_i2c_resource,
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};
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static struct resource v2m_eth_resources[] = {
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{
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.start = V2M_LAN9118,
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.end = V2M_LAN9118 + SZ_64K - 1,
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.flags = IORESOURCE_MEM,
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}, {
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.start = IRQ_V2M_LAN9118,
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.end = IRQ_V2M_LAN9118,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct smsc911x_platform_config v2m_eth_config = {
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.flags = SMSC911X_USE_32BIT,
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.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
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.irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
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.phy_interface = PHY_INTERFACE_MODE_MII,
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};
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static struct platform_device v2m_eth_device = {
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.name = "smsc911x",
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.id = -1,
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.resource = v2m_eth_resources,
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.num_resources = ARRAY_SIZE(v2m_eth_resources),
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.dev.platform_data = &v2m_eth_config,
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};
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static struct resource v2m_usb_resources[] = {
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{
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.start = V2M_ISP1761,
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.end = V2M_ISP1761 + SZ_128K - 1,
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.flags = IORESOURCE_MEM,
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}, {
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.start = IRQ_V2M_ISP1761,
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.end = IRQ_V2M_ISP1761,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct isp1760_platform_data v2m_usb_config = {
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.is_isp1761 = true,
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.bus_width_16 = false,
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.port1_otg = true,
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.analog_oc = false,
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.dack_polarity_high = false,
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.dreq_polarity_high = false,
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};
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static struct platform_device v2m_usb_device = {
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.name = "isp1760",
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.id = -1,
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.resource = v2m_usb_resources,
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.num_resources = ARRAY_SIZE(v2m_usb_resources),
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.dev.platform_data = &v2m_usb_config,
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};
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static void v2m_flash_set_vpp(struct platform_device *pdev, int on)
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{
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writel(on != 0, v2m_sysreg_base + V2M_SYS_FLASH);
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}
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static struct physmap_flash_data v2m_flash_data = {
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.width = 4,
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.set_vpp = v2m_flash_set_vpp,
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};
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static struct resource v2m_flash_resources[] = {
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{
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.start = V2M_NOR0,
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.end = V2M_NOR0 + SZ_64M - 1,
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.flags = IORESOURCE_MEM,
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}, {
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.start = V2M_NOR1,
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.end = V2M_NOR1 + SZ_64M - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device v2m_flash_device = {
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.name = "physmap-flash",
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.id = -1,
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.resource = v2m_flash_resources,
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.num_resources = ARRAY_SIZE(v2m_flash_resources),
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.dev.platform_data = &v2m_flash_data,
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};
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static struct pata_platform_info v2m_pata_data = {
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.ioport_shift = 2,
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};
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static struct resource v2m_pata_resources[] = {
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{
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.start = V2M_CF,
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.end = V2M_CF + 0xff,
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.flags = IORESOURCE_MEM,
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}, {
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.start = V2M_CF + 0x100,
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.end = V2M_CF + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device v2m_cf_device = {
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.name = "pata_platform",
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.id = -1,
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.resource = v2m_pata_resources,
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.num_resources = ARRAY_SIZE(v2m_pata_resources),
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.dev.platform_data = &v2m_pata_data,
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};
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static unsigned int v2m_mmci_status(struct device *dev)
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{
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return readl(v2m_sysreg_base + V2M_SYS_MCI) & (1 << 0);
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}
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static struct mmci_platform_data v2m_mmci_data = {
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.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
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.status = v2m_mmci_status,
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};
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static AMBA_APB_DEVICE(aaci, "mb:aaci", 0, V2M_AACI, IRQ_V2M_AACI, NULL);
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static AMBA_APB_DEVICE(mmci, "mb:mmci", 0, V2M_MMCI, IRQ_V2M_MMCI, &v2m_mmci_data);
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static AMBA_APB_DEVICE(kmi0, "mb:kmi0", 0, V2M_KMI0, IRQ_V2M_KMI0, NULL);
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static AMBA_APB_DEVICE(kmi1, "mb:kmi1", 0, V2M_KMI1, IRQ_V2M_KMI1, NULL);
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static AMBA_APB_DEVICE(uart0, "mb:uart0", 0, V2M_UART0, IRQ_V2M_UART0, NULL);
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static AMBA_APB_DEVICE(uart1, "mb:uart1", 0, V2M_UART1, IRQ_V2M_UART1, NULL);
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static AMBA_APB_DEVICE(uart2, "mb:uart2", 0, V2M_UART2, IRQ_V2M_UART2, NULL);
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static AMBA_APB_DEVICE(uart3, "mb:uart3", 0, V2M_UART3, IRQ_V2M_UART3, NULL);
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static AMBA_APB_DEVICE(wdt, "mb:wdt", 0, V2M_WDT, IRQ_V2M_WDT, NULL);
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static AMBA_APB_DEVICE(rtc, "mb:rtc", 0, V2M_RTC, IRQ_V2M_RTC, NULL);
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static struct amba_device *v2m_amba_devs[] __initdata = {
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&aaci_device,
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&mmci_device,
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&kmi0_device,
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&kmi1_device,
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&uart0_device,
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&uart1_device,
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&uart2_device,
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&uart3_device,
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&wdt_device,
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&rtc_device,
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};
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static long v2m_osc_round(struct clk *clk, unsigned long rate)
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{
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return rate;
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}
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static int v2m_osc1_set(struct clk *clk, unsigned long rate)
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{
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return v2m_cfg_write(SYS_CFG_OSC | SYS_CFG_SITE_MB | 1, rate);
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}
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static const struct clk_ops osc1_clk_ops = {
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.round = v2m_osc_round,
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.set = v2m_osc1_set,
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};
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static struct clk osc1_clk = {
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.ops = &osc1_clk_ops,
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.rate = 24000000,
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};
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static struct clk osc2_clk = {
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.rate = 24000000,
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};
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static struct clk v2m_sp804_clk = {
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.rate = 1000000,
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};
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static struct clk v2m_ref_clk = {
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.rate = 32768,
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};
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static struct clk dummy_apb_pclk;
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static struct clk_lookup v2m_lookups[] = {
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{ /* AMBA bus clock */
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.con_id = "apb_pclk",
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.clk = &dummy_apb_pclk,
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}, { /* UART0 */
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.dev_id = "mb:uart0",
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.clk = &osc2_clk,
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}, { /* UART1 */
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.dev_id = "mb:uart1",
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.clk = &osc2_clk,
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}, { /* UART2 */
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.dev_id = "mb:uart2",
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.clk = &osc2_clk,
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}, { /* UART3 */
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.dev_id = "mb:uart3",
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.clk = &osc2_clk,
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}, { /* KMI0 */
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.dev_id = "mb:kmi0",
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.clk = &osc2_clk,
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}, { /* KMI1 */
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.dev_id = "mb:kmi1",
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.clk = &osc2_clk,
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}, { /* MMC0 */
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.dev_id = "mb:mmci",
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.clk = &osc2_clk,
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}, { /* CLCD */
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.dev_id = "mb:clcd",
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.clk = &osc1_clk,
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}, { /* SP805 WDT */
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.dev_id = "mb:wdt",
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.clk = &v2m_ref_clk,
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}, { /* SP804 timers */
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.dev_id = "sp804",
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.con_id = "v2m-timer0",
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.clk = &v2m_sp804_clk,
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}, { /* SP804 timers */
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.dev_id = "sp804",
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.con_id = "v2m-timer1",
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.clk = &v2m_sp804_clk,
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},
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};
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static void __init v2m_init_early(void)
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{
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ct_desc->init_early();
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clkdev_add_table(v2m_lookups, ARRAY_SIZE(v2m_lookups));
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versatile_sched_clock_init(v2m_sysreg_base + V2M_SYS_24MHZ, 24000000);
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}
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static void v2m_power_off(void)
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{
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if (v2m_cfg_write(SYS_CFG_SHUTDOWN | SYS_CFG_SITE_MB, 0))
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printk(KERN_EMERG "Unable to shutdown\n");
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}
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static void v2m_restart(char str, const char *cmd)
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{
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if (v2m_cfg_write(SYS_CFG_REBOOT | SYS_CFG_SITE_MB, 0))
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printk(KERN_EMERG "Unable to reboot\n");
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}
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struct ct_desc *ct_desc;
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static struct ct_desc *ct_descs[] __initdata = {
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#ifdef CONFIG_ARCH_VEXPRESS_CA9X4
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&ct_ca9x4_desc,
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#endif
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};
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static void __init v2m_populate_ct_desc(void)
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{
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int i;
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u32 current_tile_id;
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ct_desc = NULL;
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current_tile_id = readl(v2m_sysreg_base + V2M_SYS_PROCID0)
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& V2M_CT_ID_MASK;
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for (i = 0; i < ARRAY_SIZE(ct_descs) && !ct_desc; ++i)
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if (ct_descs[i]->id == current_tile_id)
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ct_desc = ct_descs[i];
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if (!ct_desc)
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panic("vexpress: this kernel does not support core tile ID 0x%08x when booting via ATAGs.\n"
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"You may need a device tree blob or a different kernel to boot on this board.\n",
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current_tile_id);
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}
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static void __init v2m_map_io(void)
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{
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iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
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v2m_sysreg_base = ioremap(V2M_SYSREGS, SZ_4K);
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v2m_populate_ct_desc();
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ct_desc->map_io();
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}
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static void __init v2m_init_irq(void)
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{
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ct_desc->init_irq();
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}
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static void __init v2m_init(void)
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{
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int i;
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platform_device_register(&v2m_pcie_i2c_device);
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platform_device_register(&v2m_ddc_i2c_device);
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platform_device_register(&v2m_flash_device);
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platform_device_register(&v2m_cf_device);
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platform_device_register(&v2m_eth_device);
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platform_device_register(&v2m_usb_device);
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for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
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amba_device_register(v2m_amba_devs[i], &iomem_resource);
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pm_power_off = v2m_power_off;
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ct_desc->init_tile();
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}
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MACHINE_START(VEXPRESS, "ARM-Versatile Express")
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.atag_offset = 0x100,
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.map_io = v2m_map_io,
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.init_early = v2m_init_early,
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.init_irq = v2m_init_irq,
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.timer = &v2m_timer,
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.handle_irq = gic_handle_irq,
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.init_machine = v2m_init,
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.restart = v2m_restart,
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MACHINE_END
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|
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#if defined(CONFIG_ARCH_VEXPRESS_DT)
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|
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static struct map_desc v2m_rs1_io_desc __initdata = {
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.virtual = V2M_PERIPH,
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.pfn = __phys_to_pfn(0x1c000000),
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.length = SZ_2M,
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.type = MT_DEVICE,
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};
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|
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static int __init v2m_dt_scan_memory_map(unsigned long node, const char *uname,
|
|
int depth, void *data)
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|
{
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const char **map = data;
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|
|
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if (strcmp(uname, "motherboard") != 0)
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return 0;
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|
|
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*map = of_get_flat_dt_prop(node, "arm,v2m-memory-map", NULL);
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|
|
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return 1;
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|
}
|
|
|
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void __init v2m_dt_map_io(void)
|
|
{
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const char *map = NULL;
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|
|
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of_scan_flat_dt(v2m_dt_scan_memory_map, &map);
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|
|
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if (map && strcmp(map, "rs1") == 0)
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iotable_init(&v2m_rs1_io_desc, 1);
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else
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iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
|
|
|
|
#if defined(CONFIG_SMP)
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vexpress_dt_smp_map_io();
|
|
#endif
|
|
}
|
|
|
|
static struct clk_lookup v2m_dt_lookups[] = {
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|
{ /* AMBA bus clock */
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|
.con_id = "apb_pclk",
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|
.clk = &dummy_apb_pclk,
|
|
}, { /* SP804 timers */
|
|
.dev_id = "sp804",
|
|
.con_id = "v2m-timer0",
|
|
.clk = &v2m_sp804_clk,
|
|
}, { /* SP804 timers */
|
|
.dev_id = "sp804",
|
|
.con_id = "v2m-timer1",
|
|
.clk = &v2m_sp804_clk,
|
|
}, { /* PL180 MMCI */
|
|
.dev_id = "mb:mmci", /* 10005000.mmci */
|
|
.clk = &osc2_clk,
|
|
}, { /* PL050 KMI0 */
|
|
.dev_id = "10006000.kmi",
|
|
.clk = &osc2_clk,
|
|
}, { /* PL050 KMI1 */
|
|
.dev_id = "10007000.kmi",
|
|
.clk = &osc2_clk,
|
|
}, { /* PL011 UART0 */
|
|
.dev_id = "10009000.uart",
|
|
.clk = &osc2_clk,
|
|
}, { /* PL011 UART1 */
|
|
.dev_id = "1000a000.uart",
|
|
.clk = &osc2_clk,
|
|
}, { /* PL011 UART2 */
|
|
.dev_id = "1000b000.uart",
|
|
.clk = &osc2_clk,
|
|
}, { /* PL011 UART3 */
|
|
.dev_id = "1000c000.uart",
|
|
.clk = &osc2_clk,
|
|
}, { /* SP805 WDT */
|
|
.dev_id = "1000f000.wdt",
|
|
.clk = &v2m_ref_clk,
|
|
}, { /* PL111 CLCD */
|
|
.dev_id = "1001f000.clcd",
|
|
.clk = &osc1_clk,
|
|
},
|
|
/* RS1 memory map */
|
|
{ /* PL180 MMCI */
|
|
.dev_id = "mb:mmci", /* 1c050000.mmci */
|
|
.clk = &osc2_clk,
|
|
}, { /* PL050 KMI0 */
|
|
.dev_id = "1c060000.kmi",
|
|
.clk = &osc2_clk,
|
|
}, { /* PL050 KMI1 */
|
|
.dev_id = "1c070000.kmi",
|
|
.clk = &osc2_clk,
|
|
}, { /* PL011 UART0 */
|
|
.dev_id = "1c090000.uart",
|
|
.clk = &osc2_clk,
|
|
}, { /* PL011 UART1 */
|
|
.dev_id = "1c0a0000.uart",
|
|
.clk = &osc2_clk,
|
|
}, { /* PL011 UART2 */
|
|
.dev_id = "1c0b0000.uart",
|
|
.clk = &osc2_clk,
|
|
}, { /* PL011 UART3 */
|
|
.dev_id = "1c0c0000.uart",
|
|
.clk = &osc2_clk,
|
|
}, { /* SP805 WDT */
|
|
.dev_id = "1c0f0000.wdt",
|
|
.clk = &v2m_ref_clk,
|
|
}, { /* PL111 CLCD */
|
|
.dev_id = "1c1f0000.clcd",
|
|
.clk = &osc1_clk,
|
|
},
|
|
};
|
|
|
|
void __init v2m_dt_init_early(void)
|
|
{
|
|
struct device_node *node;
|
|
u32 dt_hbi;
|
|
|
|
node = of_find_compatible_node(NULL, NULL, "arm,vexpress-sysreg");
|
|
v2m_sysreg_base = of_iomap(node, 0);
|
|
if (WARN_ON(!v2m_sysreg_base))
|
|
return;
|
|
|
|
/* Confirm board type against DT property, if available */
|
|
if (of_property_read_u32(allnodes, "arm,hbi", &dt_hbi) == 0) {
|
|
u32 misc = readl(v2m_sysreg_base + V2M_SYS_MISC);
|
|
u32 id = readl(v2m_sysreg_base + (misc & SYS_MISC_MASTERSITE ?
|
|
V2M_SYS_PROCID1 : V2M_SYS_PROCID0));
|
|
u32 hbi = id & SYS_PROCIDx_HBI_MASK;
|
|
|
|
if (WARN_ON(dt_hbi != hbi))
|
|
pr_warning("vexpress: DT HBI (%x) is not matching "
|
|
"hardware (%x)!\n", dt_hbi, hbi);
|
|
}
|
|
|
|
clkdev_add_table(v2m_dt_lookups, ARRAY_SIZE(v2m_dt_lookups));
|
|
}
|
|
|
|
static struct of_device_id vexpress_irq_match[] __initdata = {
|
|
{ .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
|
|
{}
|
|
};
|
|
|
|
static void __init v2m_dt_init_irq(void)
|
|
{
|
|
of_irq_init(vexpress_irq_match);
|
|
}
|
|
|
|
static void __init v2m_dt_timer_init(void)
|
|
{
|
|
struct device_node *node;
|
|
const char *path;
|
|
int err;
|
|
|
|
node = of_find_compatible_node(NULL, NULL, "arm,sp810");
|
|
v2m_sysctl_init(of_iomap(node, 0));
|
|
|
|
err = of_property_read_string(of_aliases, "arm,v2m_timer", &path);
|
|
if (WARN_ON(err))
|
|
return;
|
|
node = of_find_node_by_path(path);
|
|
v2m_sp804_init(of_iomap(node, 0), irq_of_parse_and_map(node, 0));
|
|
if (arch_timer_of_register() != 0)
|
|
twd_local_timer_of_register();
|
|
|
|
if (arch_timer_sched_clock_init() != 0)
|
|
versatile_sched_clock_init(v2m_sysreg_base + V2M_SYS_24MHZ, 24000000);
|
|
}
|
|
|
|
static struct sys_timer v2m_dt_timer = {
|
|
.init = v2m_dt_timer_init,
|
|
};
|
|
|
|
static struct of_dev_auxdata v2m_dt_auxdata_lookup[] __initdata = {
|
|
OF_DEV_AUXDATA("arm,vexpress-flash", V2M_NOR0, "physmap-flash",
|
|
&v2m_flash_data),
|
|
OF_DEV_AUXDATA("arm,primecell", V2M_MMCI, "mb:mmci", &v2m_mmci_data),
|
|
/* RS1 memory map */
|
|
OF_DEV_AUXDATA("arm,vexpress-flash", 0x08000000, "physmap-flash",
|
|
&v2m_flash_data),
|
|
OF_DEV_AUXDATA("arm,primecell", 0x1c050000, "mb:mmci", &v2m_mmci_data),
|
|
{}
|
|
};
|
|
|
|
static void __init v2m_dt_init(void)
|
|
{
|
|
l2x0_of_init(0x00400000, 0xfe0fffff);
|
|
of_platform_populate(NULL, of_default_bus_match_table,
|
|
v2m_dt_auxdata_lookup, NULL);
|
|
pm_power_off = v2m_power_off;
|
|
}
|
|
|
|
const static char *v2m_dt_match[] __initconst = {
|
|
"arm,vexpress",
|
|
NULL,
|
|
};
|
|
|
|
DT_MACHINE_START(VEXPRESS_DT, "ARM-Versatile Express")
|
|
.dt_compat = v2m_dt_match,
|
|
.map_io = v2m_dt_map_io,
|
|
.init_early = v2m_dt_init_early,
|
|
.init_irq = v2m_dt_init_irq,
|
|
.timer = &v2m_dt_timer,
|
|
.init_machine = v2m_dt_init,
|
|
.handle_irq = gic_handle_irq,
|
|
.restart = v2m_restart,
|
|
MACHINE_END
|
|
|
|
#endif
|