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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/arch/arm/mach-vexpress/v2m.c

506 строки
12 KiB
C
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/*
* 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 <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 <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;
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 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,
.gpio_wp = VEXPRESS_GPIO_MMC_WPROT,
.gpio_cd = VEXPRESS_GPIO_MMC_CARDIN,
};
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 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(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_muxfpga_device);
platform_device_register(&v2m_shutdown_device);
platform_device_register(&v2m_reboot_device);
platform_device_register(&v2m_dvimode_device);
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);
pm_power_off = vexpress_power_off;
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,
.timer = &v2m_timer,
.handle_irq = gic_handle_irq,
.init_machine = v2m_init,
.restart = vexpress_restart,
MACHINE_END
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)
{
u32 dt_hbi;
vexpress_sysreg_of_early_init();
/* Confirm board type against DT property, if available */
if (of_property_read_u32(of_allnodes, "arm,hbi", &dt_hbi) == 0) {
u32 hbi = vexpress_get_hbi(VEXPRESS_SITE_MASTER);
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 = NULL;
vexpress_clk_of_init();
do {
node = of_find_compatible_node(node, NULL, "arm,sp804");
} while (node && vexpress_get_site_by_node(node) != VEXPRESS_SITE_MB);
if (node) {
pr_info("Using SP804 '%s' as a clock & events source\n",
node->full_name);
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(vexpress_get_24mhz_clock_base(),
24000000);
}
static struct sys_timer v2m_dt_timer = {
.init = v2m_dt_timer_init,
};
static const struct of_device_id v2m_dt_bus_match[] __initconst = {
{ .compatible = "simple-bus", },
{ .compatible = "arm,amba-bus", },
{ .compatible = "arm,vexpress,config-bus", },
{}
};
static void __init v2m_dt_init(void)
{
l2x0_of_init(0x00400000, 0xfe0fffff);
of_platform_populate(NULL, v2m_dt_bus_match, NULL, NULL);
pm_power_off = vexpress_power_off;
}
static const char * const v2m_dt_match[] __initconst = {
"arm,vexpress",
"xen,xenvm",
NULL,
};
DT_MACHINE_START(VEXPRESS_DT, "ARM-Versatile Express")
.dt_compat = v2m_dt_match,
.smp = smp_ops(vexpress_smp_ops),
.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 = vexpress_restart,
MACHINE_END
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