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linux-next/arch/arm/mach-vexpress/v2m.c
Linus Torvalds eb3d3ec567 Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into next 
Pull ARM updates from Russell King:

 - Major clean-up of the L2 cache support code.  The existing mess was
   becoming rather unmaintainable through all the additions that others
   have done over time.  This turns it into a much nicer structure, and
   implements a few performance improvements as well.

 - Clean up some of the CP15 control register tweaks for alignment
   support, moving some code and data into alignment.c

 - DMA properties for ARM, from Santosh and reviewed by DT people.  This
   adds DT properties to specify bus translations we can't discover
   automatically, and to indicate whether devices are coherent.

 - Hibernation support for ARM

 - Make ftrace work with read-only text in modules

 - add suspend support for PJ4B CPUs

 - rework interrupt masking for undefined instruction handling, which
   allows us to enable interrupts earlier in the handling of these
   exceptions.

 - support for big endian page tables

 - fix stacktrace support to exclude stacktrace functions from the
   trace, and add save_stack_trace_regs() implementation so that kprobes
   can record stack traces.

 - Add support for the Cortex-A17 CPU.

 - Remove last vestiges of ARM710 support.

 - Removal of ARM "meminfo" structure, finally converting us solely to
   memblock to handle the early memory initialisation.

* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (142 commits)
  ARM: ensure C page table setup code follows assembly code (part II)
  ARM: ensure C page table setup code follows assembly code
  ARM: consolidate last remaining open-coded alignment trap enable
  ARM: remove global cr_no_alignment
  ARM: remove CPU_CP15 conditional from alignment.c
  ARM: remove unused adjust_cr() function
  ARM: move "noalign" command line option to alignment.c
  ARM: provide common method to clear bits in CPU control register
  ARM: 8025/1: Get rid of meminfo
  ARM: 8060/1: mm: allow sub-architectures to override PCI I/O memory type
  ARM: 8066/1: correction for ARM patch 8031/2
  ARM: 8049/1: ftrace/add save_stack_trace_regs() implementation
  ARM: 8065/1: remove last use of CONFIG_CPU_ARM710
  ARM: 8062/1: Modify ldrt fixup handler to re-execute the userspace instruction
  ARM: 8047/1: rwsem: use asm-generic rwsem implementation
  ARM: l2c: trial at enabling some Cortex-A9 optimisations
  ARM: l2c: add warnings for stuff modifying aux_ctrl register values
  ARM: l2c: print a warning with L2C-310 caches if the cache size is modified
  ARM: l2c: remove old .set_debug method
  ARM: l2c: kill L2X0_AUX_CTRL_MASK before anyone else makes use of this
  ...
2014-06-05 15:57:04 -07:00

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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 <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
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