forked from Minki/linux
b2a54ff03c
SMSC driver requires "vdd33a" and "vddvario" regulator supplies now. Add fixed regulator describing 3V3 power line (in both motherboard's Device Trees and the non-DT code) and force fixed regulator config option if regulators framework is enabled. Signed-off-by: Pawel Moll <pawel.moll@arm.com>
676 lines
16 KiB
C
676 lines
16 KiB
C
/*
|
|
* 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/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/clkdev.h>
|
|
#include <linux/clk-provider.h>
|
|
#include <linux/mtd/physmap.h>
|
|
#include <linux/regulator/fixed.h>
|
|
#include <linux/regulator/machine.h>
|
|
|
|
#include <asm/arch_timer.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/sizes.h>
|
|
#include <asm/smp_twd.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/gic.h>
|
|
#include <asm/hardware/timer-sp.h>
|
|
#include <asm/hardware/sp810.h>
|
|
|
|
#include <mach/ct-ca9x4.h>
|
|
#include <mach/motherboard.h>
|
|
|
|
#include <plat/sched_clock.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 __iomem *v2m_sysreg_base;
|
|
|
|
static void __init v2m_sysctl_init(void __iomem *base)
|
|
{
|
|
u32 scctrl;
|
|
|
|
if (WARN_ON(!base))
|
|
return;
|
|
|
|
/* Select 1MHz TIMCLK as the reference clock for SP804 timers */
|
|
scctrl = readl(base + SCCTRL);
|
|
scctrl |= SCCTRL_TIMEREN0SEL_TIMCLK;
|
|
scctrl |= SCCTRL_TIMEREN1SEL_TIMCLK;
|
|
writel(scctrl, base + SCCTRL);
|
|
}
|
|
|
|
static void __init v2m_sp804_init(void __iomem *base, unsigned int irq)
|
|
{
|
|
if (WARN_ON(!base || irq == NO_IRQ))
|
|
return;
|
|
|
|
writel(0, base + TIMER_1_BASE + TIMER_CTRL);
|
|
writel(0, base + TIMER_2_BASE + TIMER_CTRL);
|
|
|
|
sp804_clocksource_init(base + TIMER_2_BASE, "v2m-timer1");
|
|
sp804_clockevents_init(base + TIMER_1_BASE, irq, "v2m-timer0");
|
|
}
|
|
|
|
|
|
static DEFINE_SPINLOCK(v2m_cfg_lock);
|
|
|
|
int v2m_cfg_write(u32 devfn, u32 data)
|
|
{
|
|
/* Configuration interface broken? */
|
|
u32 val;
|
|
|
|
printk("%s: writing %08x to %08x\n", __func__, data, devfn);
|
|
|
|
devfn |= SYS_CFG_START | SYS_CFG_WRITE;
|
|
|
|
spin_lock(&v2m_cfg_lock);
|
|
val = readl(v2m_sysreg_base + V2M_SYS_CFGSTAT);
|
|
writel(val & ~SYS_CFG_COMPLETE, v2m_sysreg_base + V2M_SYS_CFGSTAT);
|
|
|
|
writel(data, v2m_sysreg_base + V2M_SYS_CFGDATA);
|
|
writel(devfn, v2m_sysreg_base + V2M_SYS_CFGCTRL);
|
|
|
|
do {
|
|
val = readl(v2m_sysreg_base + V2M_SYS_CFGSTAT);
|
|
} while (val == 0);
|
|
spin_unlock(&v2m_cfg_lock);
|
|
|
|
return !!(val & SYS_CFG_ERR);
|
|
}
|
|
|
|
int v2m_cfg_read(u32 devfn, u32 *data)
|
|
{
|
|
u32 val;
|
|
|
|
devfn |= SYS_CFG_START;
|
|
|
|
spin_lock(&v2m_cfg_lock);
|
|
writel(0, v2m_sysreg_base + V2M_SYS_CFGSTAT);
|
|
writel(devfn, v2m_sysreg_base + V2M_SYS_CFGCTRL);
|
|
|
|
mb();
|
|
|
|
do {
|
|
cpu_relax();
|
|
val = readl(v2m_sysreg_base + V2M_SYS_CFGSTAT);
|
|
} while (val == 0);
|
|
|
|
*data = readl(v2m_sysreg_base + V2M_SYS_CFGDATA);
|
|
spin_unlock(&v2m_cfg_lock);
|
|
|
|
return !!(val & SYS_CFG_ERR);
|
|
}
|
|
|
|
void __init v2m_flags_set(u32 data)
|
|
{
|
|
writel(~0, v2m_sysreg_base + V2M_SYS_FLAGSCLR);
|
|
writel(data, v2m_sysreg_base + V2M_SYS_FLAGSSET);
|
|
}
|
|
|
|
int v2m_get_master_site(void)
|
|
{
|
|
u32 misc = readl(v2m_sysreg_base + V2M_SYS_MISC);
|
|
|
|
return misc & SYS_MISC_MASTERSITE ? SYS_CFG_SITE_DB2 : SYS_CFG_SITE_DB1;
|
|
}
|
|
|
|
|
|
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 void v2m_flash_set_vpp(struct platform_device *pdev, int on)
|
|
{
|
|
writel(on != 0, v2m_sysreg_base + V2M_SYS_FLASH);
|
|
}
|
|
|
|
static struct physmap_flash_data v2m_flash_data = {
|
|
.width = 4,
|
|
.set_vpp = v2m_flash_set_vpp,
|
|
};
|
|
|
|
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 unsigned int v2m_mmci_status(struct device *dev)
|
|
{
|
|
return readl(v2m_sysreg_base + V2M_SYS_MCI) & (1 << 0);
|
|
}
|
|
|
|
static struct mmci_platform_data v2m_mmci_data = {
|
|
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
|
|
.status = v2m_mmci_status,
|
|
};
|
|
|
|
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 unsigned long v2m_osc_recalc_rate(struct clk_hw *hw,
|
|
unsigned long parent_rate)
|
|
{
|
|
struct v2m_osc *osc = to_v2m_osc(hw);
|
|
|
|
return !parent_rate ? osc->rate_default : parent_rate;
|
|
}
|
|
|
|
static long v2m_osc_round_rate(struct clk_hw *hw, unsigned long rate,
|
|
unsigned long *parent_rate)
|
|
{
|
|
struct v2m_osc *osc = to_v2m_osc(hw);
|
|
|
|
if (WARN_ON(rate < osc->rate_min))
|
|
rate = osc->rate_min;
|
|
|
|
if (WARN_ON(rate > osc->rate_max))
|
|
rate = osc->rate_max;
|
|
|
|
return rate;
|
|
}
|
|
|
|
static int v2m_osc_set_rate(struct clk_hw *hw, unsigned long rate,
|
|
unsigned long parent_rate)
|
|
{
|
|
struct v2m_osc *osc = to_v2m_osc(hw);
|
|
|
|
v2m_cfg_write(SYS_CFG_OSC | SYS_CFG_SITE(osc->site) |
|
|
SYS_CFG_STACK(osc->stack) | osc->osc, rate);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct clk_ops v2m_osc_ops = {
|
|
.recalc_rate = v2m_osc_recalc_rate,
|
|
.round_rate = v2m_osc_round_rate,
|
|
.set_rate = v2m_osc_set_rate,
|
|
};
|
|
|
|
struct clk * __init v2m_osc_register(const char *name, struct v2m_osc *osc)
|
|
{
|
|
struct clk_init_data init;
|
|
|
|
WARN_ON(osc->site > 2);
|
|
WARN_ON(osc->stack > 15);
|
|
WARN_ON(osc->osc > 4095);
|
|
|
|
init.name = name;
|
|
init.ops = &v2m_osc_ops;
|
|
init.flags = CLK_IS_ROOT;
|
|
init.num_parents = 0;
|
|
|
|
osc->hw.init = &init;
|
|
|
|
return clk_register(NULL, &osc->hw);
|
|
}
|
|
|
|
static struct v2m_osc v2m_mb_osc1 = {
|
|
.site = SYS_CFG_SITE_MB,
|
|
.osc = 1,
|
|
.rate_min = 23750000,
|
|
.rate_max = 63500000,
|
|
.rate_default = 23750000,
|
|
};
|
|
|
|
static const char *v2m_ref_clk_periphs[] __initconst = {
|
|
"mb:wdt", "1000f000.wdt", "1c0f0000.wdt", /* SP805 WDT */
|
|
};
|
|
|
|
static const char *v2m_osc1_periphs[] __initconst = {
|
|
"mb:clcd", "1001f000.clcd", "1c1f0000.clcd", /* PL111 CLCD */
|
|
};
|
|
|
|
static const char *v2m_osc2_periphs[] __initconst = {
|
|
"mb:mmci", "10005000.mmci", "1c050000.mmci", /* PL180 MMCI */
|
|
"mb:kmi0", "10006000.kmi", "1c060000.kmi", /* PL050 KMI0 */
|
|
"mb:kmi1", "10007000.kmi", "1c070000.kmi", /* PL050 KMI1 */
|
|
"mb:uart0", "10009000.uart", "1c090000.uart", /* PL011 UART0 */
|
|
"mb:uart1", "1000a000.uart", "1c0a0000.uart", /* PL011 UART1 */
|
|
"mb:uart2", "1000b000.uart", "1c0b0000.uart", /* PL011 UART2 */
|
|
"mb:uart3", "1000c000.uart", "1c0c0000.uart", /* PL011 UART3 */
|
|
};
|
|
|
|
static void __init v2m_clk_init(void)
|
|
{
|
|
struct clk *clk;
|
|
int i;
|
|
|
|
clk = clk_register_fixed_rate(NULL, "dummy_apb_pclk", NULL,
|
|
CLK_IS_ROOT, 0);
|
|
WARN_ON(clk_register_clkdev(clk, "apb_pclk", NULL));
|
|
|
|
clk = clk_register_fixed_rate(NULL, "mb:ref_clk", NULL,
|
|
CLK_IS_ROOT, 32768);
|
|
for (i = 0; i < ARRAY_SIZE(v2m_ref_clk_periphs); i++)
|
|
WARN_ON(clk_register_clkdev(clk, NULL, v2m_ref_clk_periphs[i]));
|
|
|
|
clk = clk_register_fixed_rate(NULL, "mb:sp804_clk", NULL,
|
|
CLK_IS_ROOT, 1000000);
|
|
WARN_ON(clk_register_clkdev(clk, "v2m-timer0", "sp804"));
|
|
WARN_ON(clk_register_clkdev(clk, "v2m-timer1", "sp804"));
|
|
|
|
clk = v2m_osc_register("mb:osc1", &v2m_mb_osc1);
|
|
for (i = 0; i < ARRAY_SIZE(v2m_osc1_periphs); i++)
|
|
WARN_ON(clk_register_clkdev(clk, NULL, v2m_osc1_periphs[i]));
|
|
|
|
clk = clk_register_fixed_rate(NULL, "mb:osc2", NULL,
|
|
CLK_IS_ROOT, 24000000);
|
|
for (i = 0; i < ARRAY_SIZE(v2m_osc2_periphs); i++)
|
|
WARN_ON(clk_register_clkdev(clk, NULL, v2m_osc2_periphs[i]));
|
|
}
|
|
|
|
static void __init v2m_timer_init(void)
|
|
{
|
|
v2m_sysctl_init(ioremap(V2M_SYSCTL, SZ_4K));
|
|
v2m_clk_init();
|
|
v2m_sp804_init(ioremap(V2M_TIMER01, SZ_4K), IRQ_V2M_TIMER0);
|
|
}
|
|
|
|
static struct sys_timer v2m_timer = {
|
|
.init = v2m_timer_init,
|
|
};
|
|
|
|
static void __init v2m_init_early(void)
|
|
{
|
|
if (ct_desc->init_early)
|
|
ct_desc->init_early();
|
|
versatile_sched_clock_init(v2m_sysreg_base + V2M_SYS_24MHZ, 24000000);
|
|
}
|
|
|
|
static void v2m_power_off(void)
|
|
{
|
|
if (v2m_cfg_write(SYS_CFG_SHUTDOWN | SYS_CFG_SITE(SYS_CFG_SITE_MB), 0))
|
|
printk(KERN_EMERG "Unable to shutdown\n");
|
|
}
|
|
|
|
static void v2m_restart(char str, const char *cmd)
|
|
{
|
|
if (v2m_cfg_write(SYS_CFG_REBOOT | SYS_CFG_SITE(SYS_CFG_SITE_MB), 0))
|
|
printk(KERN_EMERG "Unable to reboot\n");
|
|
}
|
|
|
|
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 = readl(v2m_sysreg_base + V2M_SYS_PROCID0)
|
|
& 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));
|
|
v2m_sysreg_base = 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_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);
|
|
|
|
pm_power_off = v2m_power_off;
|
|
|
|
ct_desc->init_tile();
|
|
}
|
|
|
|
MACHINE_START(VEXPRESS, "ARM-Versatile Express")
|
|
.atag_offset = 0x100,
|
|
.map_io = v2m_map_io,
|
|
.init_early = v2m_init_early,
|
|
.init_irq = v2m_init_irq,
|
|
.timer = &v2m_timer,
|
|
.handle_irq = gic_handle_irq,
|
|
.init_machine = v2m_init,
|
|
.restart = v2m_restart,
|
|
MACHINE_END
|
|
|
|
#if defined(CONFIG_ARCH_VEXPRESS_DT)
|
|
|
|
static struct map_desc v2m_rs1_io_desc __initdata = {
|
|
.virtual = V2M_PERIPH,
|
|
.pfn = __phys_to_pfn(0x1c000000),
|
|
.length = SZ_2M,
|
|
.type = MT_DEVICE,
|
|
};
|
|
|
|
static int __init v2m_dt_scan_memory_map(unsigned long node, const char *uname,
|
|
int depth, void *data)
|
|
{
|
|
const char **map = data;
|
|
|
|
if (strcmp(uname, "motherboard") != 0)
|
|
return 0;
|
|
|
|
*map = of_get_flat_dt_prop(node, "arm,v2m-memory-map", NULL);
|
|
|
|
return 1;
|
|
}
|
|
|
|
void __init v2m_dt_map_io(void)
|
|
{
|
|
const char *map = NULL;
|
|
|
|
of_scan_flat_dt(v2m_dt_scan_memory_map, &map);
|
|
|
|
if (map && strcmp(map, "rs1") == 0)
|
|
iotable_init(&v2m_rs1_io_desc, 1);
|
|
else
|
|
iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
|
|
|
|
#if defined(CONFIG_SMP)
|
|
vexpress_dt_smp_map_io();
|
|
#endif
|
|
}
|
|
|
|
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) {
|
|
int site = v2m_get_master_site();
|
|
u32 id = readl(v2m_sysreg_base + (site == SYS_CFG_SITE_DB2 ?
|
|
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);
|
|
}
|
|
}
|
|
|
|
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));
|
|
|
|
v2m_clk_init();
|
|
|
|
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
|