Linux-2.6.33.2/arch/arm/mach-realview/realview_eb.c
/*
* linux/arch/arm/mach-realview/realview_eb.c
*
* Copyright (C) 2004 ARM Limited
* Copyright (C) 2000 Deep Blue Solutions Ltd
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/sysdev.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl061.h>
#include <linux/amba/mmci.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/leds.h>
#include <asm/mach-types.h>
#include <asm/hardware/gic.h>
#include <asm/hardware/icst307.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/localtimer.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include <mach/board-eb.h>
#include <mach/irqs.h>
#include "core.h"
#include "clock.h"
static struct map_desc realview_eb_io_desc[] __initdata = {
{
.virtual = IO_ADDRESS(REALVIEW_SYS_BASE),
.pfn = __phys_to_pfn(REALVIEW_SYS_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_EB_GIC_CPU_BASE),
.pfn = __phys_to_pfn(REALVIEW_EB_GIC_CPU_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_EB_GIC_DIST_BASE),
.pfn = __phys_to_pfn(REALVIEW_EB_GIC_DIST_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_SCTL_BASE),
.pfn = __phys_to_pfn(REALVIEW_SCTL_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_EB_TIMER0_1_BASE),
.pfn = __phys_to_pfn(REALVIEW_EB_TIMER0_1_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_EB_TIMER2_3_BASE),
.pfn = __phys_to_pfn(REALVIEW_EB_TIMER2_3_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
},
#ifdef CONFIG_DEBUG_LL
{
.virtual = IO_ADDRESS(REALVIEW_EB_UART0_BASE),
.pfn = __phys_to_pfn(REALVIEW_EB_UART0_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}
#endif
};
static struct map_desc realview_eb11mp_io_desc[] __initdata = {
{
.virtual = IO_ADDRESS(REALVIEW_EB11MP_GIC_CPU_BASE),
.pfn = __phys_to_pfn(REALVIEW_EB11MP_GIC_CPU_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_EB11MP_GIC_DIST_BASE),
.pfn = __phys_to_pfn(REALVIEW_EB11MP_GIC_DIST_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_EB11MP_L220_BASE),
.pfn = __phys_to_pfn(REALVIEW_EB11MP_L220_BASE),
.length = SZ_8K,
.type = MT_DEVICE,
}
};
static void __init realview_eb_map_io(void)
{
iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
if (core_tile_eb11mp() || core_tile_a9mp())
iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_io_desc));
}
static struct pl061_platform_data gpio0_plat_data = {
.gpio_base = 0,
.irq_base = -1,
};
static struct pl061_platform_data gpio1_plat_data = {
.gpio_base = 8,
.irq_base = -1,
};
static struct pl061_platform_data gpio2_plat_data = {
.gpio_base = 16,
.irq_base = -1,
};
/*
* RealView EB AMBA devices
*/
/*
* These devices are connected via the core APB bridge
*/
#define GPIO2_IRQ { IRQ_EB_GPIO2, NO_IRQ }
#define GPIO2_DMA { 0, 0 }
#define GPIO3_IRQ { IRQ_EB_GPIO3, NO_IRQ }
#define GPIO3_DMA { 0, 0 }
#define AACI_IRQ { IRQ_EB_AACI, NO_IRQ }
#define AACI_DMA { 0x80, 0x81 }
#define MMCI0_IRQ { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
#define MMCI0_DMA { 0x84, 0 }
#define KMI0_IRQ { IRQ_EB_KMI0, NO_IRQ }
#define KMI0_DMA { 0, 0 }
#define KMI1_IRQ { IRQ_EB_KMI1, NO_IRQ }
#define KMI1_DMA { 0, 0 }
/*
* These devices are connected directly to the multi-layer AHB switch
*/
#define EB_SMC_IRQ { NO_IRQ, NO_IRQ }
#define EB_SMC_DMA { 0, 0 }
#define MPMC_IRQ { NO_IRQ, NO_IRQ }
#define MPMC_DMA { 0, 0 }
#define EB_CLCD_IRQ { IRQ_EB_CLCD, NO_IRQ }
#define EB_CLCD_DMA { 0, 0 }
#define DMAC_IRQ { IRQ_EB_DMA, NO_IRQ }
#define DMAC_DMA { 0, 0 }
/*
* These devices are connected via the core APB bridge
*/
#define SCTL_IRQ { NO_IRQ, NO_IRQ }
#define SCTL_DMA { 0, 0 }
#define EB_WATCHDOG_IRQ { IRQ_EB_WDOG, NO_IRQ }
#define EB_WATCHDOG_DMA { 0, 0 }
#define EB_GPIO0_IRQ { IRQ_EB_GPIO0, NO_IRQ }
#define EB_GPIO0_DMA { 0, 0 }
#define GPIO1_IRQ { IRQ_EB_GPIO1, NO_IRQ }
#define GPIO1_DMA { 0, 0 }
#define EB_RTC_IRQ { IRQ_EB_RTC, NO_IRQ }
#define EB_RTC_DMA { 0, 0 }
/*
* These devices are connected via the DMA APB bridge
*/
#define SCI_IRQ { IRQ_EB_SCI, NO_IRQ }
#define SCI_DMA { 7, 6 }
#define EB_UART0_IRQ { IRQ_EB_UART0, NO_IRQ }
#define EB_UART0_DMA { 15, 14 }
#define EB_UART1_IRQ { IRQ_EB_UART1, NO_IRQ }
#define EB_UART1_DMA { 13, 12 }
#define EB_UART2_IRQ { IRQ_EB_UART2, NO_IRQ }
#define EB_UART2_DMA { 11, 10 }
#define EB_UART3_IRQ { IRQ_EB_UART3, NO_IRQ }
#define EB_UART3_DMA { 0x86, 0x87 }
#define EB_SSP_IRQ { IRQ_EB_SSP, NO_IRQ }
#define EB_SSP_DMA { 9, 8 }
/* FPGA Primecells */
AMBA_DEVICE(aaci, "fpga:aaci", AACI, NULL);
AMBA_DEVICE(mmc0, "fpga:mmc0", MMCI0, &realview_mmc0_plat_data);
AMBA_DEVICE(kmi0, "fpga:kmi0", KMI0, NULL);
AMBA_DEVICE(kmi1, "fpga:kmi1", KMI1, NULL);
AMBA_DEVICE(uart3, "fpga:uart3", EB_UART3, NULL);
/* DevChip Primecells */
AMBA_DEVICE(smc, "dev:smc", EB_SMC, NULL);
AMBA_DEVICE(clcd, "dev:clcd", EB_CLCD, &clcd_plat_data);
AMBA_DEVICE(dmac, "dev:dmac", DMAC, NULL);
AMBA_DEVICE(sctl, "dev:sctl", SCTL, NULL);
AMBA_DEVICE(wdog, "dev:wdog", EB_WATCHDOG, NULL);
AMBA_DEVICE(gpio0, "dev:gpio0", EB_GPIO0, &gpio0_plat_data);
AMBA_DEVICE(gpio1, "dev:gpio1", GPIO1, &gpio1_plat_data);
AMBA_DEVICE(gpio2, "dev:gpio2", GPIO2, &gpio2_plat_data);
AMBA_DEVICE(rtc, "dev:rtc", EB_RTC, NULL);
AMBA_DEVICE(sci0, "dev:sci0", SCI, NULL);
AMBA_DEVICE(uart0, "dev:uart0", EB_UART0, NULL);
AMBA_DEVICE(uart1, "dev:uart1", EB_UART1, NULL);
AMBA_DEVICE(uart2, "dev:uart2", EB_UART2, NULL);
AMBA_DEVICE(ssp0, "dev:ssp0", EB_SSP, NULL);
static struct amba_device *amba_devs[] __initdata = {
&dmac_device,
&uart0_device,
&uart1_device,
&uart2_device,
&uart3_device,
&smc_device,
&clcd_device,
&sctl_device,
&wdog_device,
&gpio0_device,
&gpio1_device,
&gpio2_device,
&rtc_device,
&sci0_device,
&ssp0_device,
&aaci_device,
&mmc0_device,
&kmi0_device,
&kmi1_device,
};
/*
* RealView EB platform devices
*/
static struct resource realview_eb_flash_resource = {
.start = REALVIEW_EB_FLASH_BASE,
.end = REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1,
.flags = IORESOURCE_MEM,
};
static struct resource realview_eb_eth_resources[] = {
[0] = {
.start = REALVIEW_EB_ETH_BASE,
.end = REALVIEW_EB_ETH_BASE + SZ_64K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_EB_ETH,
.end = IRQ_EB_ETH,
.flags = IORESOURCE_IRQ,
},
};
/*
* Detect and register the correct Ethernet device. RealView/EB rev D
* platforms use the newer SMSC LAN9118 Ethernet chip
*/
static int eth_device_register(void)
{
void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K);
const char *name = NULL;
u32 idrev;
if (!eth_addr)
return -ENOMEM;
idrev = readl(eth_addr + 0x50);
if ((idrev & 0xFFFF0000) != 0x01180000)
/* SMSC LAN9118 not present, use LAN91C111 instead */
name = "smc91x";
iounmap(eth_addr);
return realview_eth_register(name, realview_eb_eth_resources);
}
static struct resource realview_eb_isp1761_resources[] = {
[0] = {
.start = REALVIEW_EB_USB_BASE,
.end = REALVIEW_EB_USB_BASE + SZ_128K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_EB_USB,
.end = IRQ_EB_USB,
.flags = IORESOURCE_IRQ,
},
};
static void __init gic_init_irq(void)
{
if (core_tile_eb11mp() || core_tile_a9mp()) {
unsigned int pldctrl;
/* new irq mode */
writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
pldctrl |= 0x00800000;
writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
/* core tile GIC, primary */
gic_cpu_base_addr = __io_address(REALVIEW_EB11MP_GIC_CPU_BASE);
gic_dist_init(0, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE), 29);
gic_cpu_init(0, gic_cpu_base_addr);
#ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
/* board GIC, secondary */
gic_dist_init(1, __io_address(REALVIEW_EB_GIC_DIST_BASE), 64);
gic_cpu_init(1, __io_address(REALVIEW_EB_GIC_CPU_BASE));
gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
#endif
} else {
/* board GIC, primary */
gic_cpu_base_addr = __io_address(REALVIEW_EB_GIC_CPU_BASE);
gic_dist_init(0, __io_address(REALVIEW_EB_GIC_DIST_BASE), 29);
gic_cpu_init(0, gic_cpu_base_addr);
}
}
/*
* Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
*/
static void realview_eb11mp_fixup(void)
{
/* AMBA devices */
dmac_device.irq[0] = IRQ_EB11MP_DMA;
uart0_device.irq[0] = IRQ_EB11MP_UART0;
uart1_device.irq[0] = IRQ_EB11MP_UART1;
uart2_device.irq[0] = IRQ_EB11MP_UART2;
uart3_device.irq[0] = IRQ_EB11MP_UART3;
clcd_device.irq[0] = IRQ_EB11MP_CLCD;
wdog_device.irq[0] = IRQ_EB11MP_WDOG;
gpio0_device.irq[0] = IRQ_EB11MP_GPIO0;
gpio1_device.irq[0] = IRQ_EB11MP_GPIO1;
gpio2_device.irq[0] = IRQ_EB11MP_GPIO2;
rtc_device.irq[0] = IRQ_EB11MP_RTC;
sci0_device.irq[0] = IRQ_EB11MP_SCI;
ssp0_device.irq[0] = IRQ_EB11MP_SSP;
aaci_device.irq[0] = IRQ_EB11MP_AACI;
mmc0_device.irq[0] = IRQ_EB11MP_MMCI0A;
mmc0_device.irq[1] = IRQ_EB11MP_MMCI0B;
kmi0_device.irq[0] = IRQ_EB11MP_KMI0;
kmi1_device.irq[0] = IRQ_EB11MP_KMI1;
/* platform devices */
realview_eb_eth_resources[1].start = IRQ_EB11MP_ETH;
realview_eb_eth_resources[1].end = IRQ_EB11MP_ETH;
realview_eb_isp1761_resources[1].start = IRQ_EB11MP_USB;
realview_eb_isp1761_resources[1].end = IRQ_EB11MP_USB;
}
static void __init realview_eb_timer_init(void)
{
unsigned int timer_irq;
timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE);
timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20;
timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;
if (core_tile_eb11mp() || core_tile_a9mp()) {
#ifdef CONFIG_LOCAL_TIMERS
twd_base = __io_address(REALVIEW_EB11MP_TWD_BASE);
#endif
timer_irq = IRQ_EB11MP_TIMER0_1;
} else
timer_irq = IRQ_EB_TIMER0_1;
realview_timer_init(timer_irq);
}
static struct sys_timer realview_eb_timer = {
.init = realview_eb_timer_init,
};
static void realview_eb_reset(char mode)
{
void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
/*
* To reset, we hit the on-board reset register
* in the system FPGA
*/
__raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
if (core_tile_eb11mp())
__raw_writel(0x0008, reset_ctrl);
}
static void __init realview_eb_init(void)
{
int i;
if (core_tile_eb11mp() || core_tile_a9mp()) {
realview_eb11mp_fixup();
#ifdef CONFIG_CACHE_L2X0
/* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
* Bits: .... ...0 0111 1001 0000 .... .... .... */
l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
#endif
}
realview_flash_register(&realview_eb_flash_resource, 1);
platform_device_register(&realview_i2c_device);
eth_device_register();
realview_usb_register(realview_eb_isp1761_resources);
for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
struct amba_device *d = amba_devs[i];
amba_device_register(d, &iomem_resource);
}
#ifdef CONFIG_LEDS
leds_event = realview_leds_event;
#endif
realview_reset = realview_eb_reset;
}
MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.phys_io = REALVIEW_EB_UART0_BASE,
.io_pg_offst = (IO_ADDRESS(REALVIEW_EB_UART0_BASE) >> 18) & 0xfffc,
.boot_params = PHYS_OFFSET + 0x00000100,
.fixup = realview_fixup,
.map_io = realview_eb_map_io,
.init_irq = gic_init_irq,
.timer = &realview_eb_timer,
.init_machine = realview_eb_init,
MACHINE_END