FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-28 20:37:27 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
47061eda25
linux/arch/arm/mach-realview/realview_pb1176.c
Linus Walleij f9a6aa4303 clk: convert ARM RealView to common clk 
This converts the ARM RealView machine over to using the common
clock. The approach is similar to the one used for the Integrator,
and we're reusing the ICST wrapper code.

We have to put the clock intialization in the timer init function
for the clocks to be available when initializing the timer,
keeping them in early_init() is too early for the common clk.

Since we now have to go down and compile drivers/clk/versatile
a CONFIG_COMMON_CLK_VERSATILE symbol has been added so the proper
code gets compiled into the kernel for either machine. A leftover
CLK_VERSATILE in the Integrator Kconfig was fixed up to use
the new symbol as well.

Tested on ARM RealView PB1176.

Cc: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-08-24 17:42:10 -07:00

401 lines
11 KiB
C
Raw Blame History

/*
* linux/arch/arm/mach-realview/realview_pb1176.c
*
* Copyright (C) 2008 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/device.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl061.h>
#include <linux/amba/mmci.h>
#include <linux/amba/pl022.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/partitions.h>
#include <linux/io.h>
#include <linux/platform_data/clk-realview.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/leds.h>
#include <asm/mach-types.h>
#include <asm/pmu.h>
#include <asm/pgtable.h>
#include <asm/hardware/gic.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include <mach/board-pb1176.h>
#include <mach/irqs.h>
#include "core.h"
static struct map_desc realview_pb1176_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_PB1176_GIC_CPU_BASE),
.pfn = __phys_to_pfn(REALVIEW_PB1176_GIC_CPU_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_PB1176_GIC_DIST_BASE),
.pfn = __phys_to_pfn(REALVIEW_PB1176_GIC_DIST_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_DC1176_GIC_CPU_BASE),
.pfn = __phys_to_pfn(REALVIEW_DC1176_GIC_CPU_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_DC1176_GIC_DIST_BASE),
.pfn = __phys_to_pfn(REALVIEW_DC1176_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_PB1176_TIMER0_1_BASE),
.pfn = __phys_to_pfn(REALVIEW_PB1176_TIMER0_1_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_PB1176_TIMER2_3_BASE),
.pfn = __phys_to_pfn(REALVIEW_PB1176_TIMER2_3_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_PB1176_L220_BASE),
.pfn = __phys_to_pfn(REALVIEW_PB1176_L220_BASE),
.length = SZ_8K,
.type = MT_DEVICE,
},
#ifdef CONFIG_DEBUG_LL
{
.virtual = IO_ADDRESS(REALVIEW_PB1176_UART0_BASE),
.pfn = __phys_to_pfn(REALVIEW_PB1176_UART0_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
},
#endif
};
static void __init realview_pb1176_map_io(void)
{
iotable_init(realview_pb1176_io_desc, ARRAY_SIZE(realview_pb1176_io_desc));
}
static struct pl061_platform_data gpio0_plat_data = {
.gpio_base = 0,
};
static struct pl061_platform_data gpio1_plat_data = {
.gpio_base = 8,
};
static struct pl061_platform_data gpio2_plat_data = {
.gpio_base = 16,
};
static struct pl022_ssp_controller ssp0_plat_data = {
.bus_id = 0,
.enable_dma = 0,
.num_chipselect = 1,
};
/*
* RealView PB1176 AMBA devices
*/
#define GPIO2_IRQ { IRQ_PB1176_GPIO2 }
#define GPIO3_IRQ { IRQ_PB1176_GPIO3 }
#define AACI_IRQ { IRQ_PB1176_AACI }
#define MMCI0_IRQ { IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
#define KMI0_IRQ { IRQ_PB1176_KMI0 }
#define KMI1_IRQ { IRQ_PB1176_KMI1 }
#define PB1176_SMC_IRQ { }
#define MPMC_IRQ { }
#define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD }
#define SCTL_IRQ { }
#define PB1176_WATCHDOG_IRQ { IRQ_DC1176_WATCHDOG }
#define PB1176_GPIO0_IRQ { IRQ_DC1176_GPIO0 }
#define GPIO1_IRQ { IRQ_PB1176_GPIO1 }
#define PB1176_RTC_IRQ { IRQ_DC1176_RTC }
#define SCI_IRQ { IRQ_PB1176_SCI }
#define PB1176_UART0_IRQ { IRQ_DC1176_UART0 }
#define PB1176_UART1_IRQ { IRQ_DC1176_UART1 }
#define PB1176_UART2_IRQ { IRQ_DC1176_UART2 }
#define PB1176_UART3_IRQ { IRQ_DC1176_UART3 }
#define PB1176_UART4_IRQ { IRQ_PB1176_UART4 }
#define PB1176_SSP_IRQ { IRQ_DC1176_SSP }
/* FPGA Primecells */
APB_DEVICE(aaci, "fpga:aaci", AACI, NULL);
APB_DEVICE(mmc0, "fpga:mmc0", MMCI0, &realview_mmc0_plat_data);
APB_DEVICE(kmi0, "fpga:kmi0", KMI0, NULL);
APB_DEVICE(kmi1, "fpga:kmi1", KMI1, NULL);
APB_DEVICE(uart4, "fpga:uart4", PB1176_UART4, NULL);
/* DevChip Primecells */
AHB_DEVICE(smc, "dev:smc", PB1176_SMC, NULL);
AHB_DEVICE(sctl, "dev:sctl", SCTL, NULL);
APB_DEVICE(wdog, "dev:wdog", PB1176_WATCHDOG, NULL);
APB_DEVICE(gpio0, "dev:gpio0", PB1176_GPIO0, &gpio0_plat_data);
APB_DEVICE(gpio1, "dev:gpio1", GPIO1, &gpio1_plat_data);
APB_DEVICE(gpio2, "dev:gpio2", GPIO2, &gpio2_plat_data);
APB_DEVICE(rtc, "dev:rtc", PB1176_RTC, NULL);
APB_DEVICE(sci0, "dev:sci0", SCI, NULL);
APB_DEVICE(uart0, "dev:uart0", PB1176_UART0, NULL);
APB_DEVICE(uart1, "dev:uart1", PB1176_UART1, NULL);
APB_DEVICE(uart2, "dev:uart2", PB1176_UART2, NULL);
APB_DEVICE(uart3, "dev:uart3", PB1176_UART3, NULL);
APB_DEVICE(ssp0, "dev:ssp0", PB1176_SSP, &ssp0_plat_data);
AHB_DEVICE(clcd, "dev:clcd", PB1176_CLCD, &clcd_plat_data);
static struct amba_device *amba_devs[] __initdata = {
&uart0_device,
&uart1_device,
&uart2_device,
&uart3_device,
&uart4_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 PB1176 platform devices
*/
static struct resource realview_pb1176_flash_resources[] = {
{
.start = REALVIEW_PB1176_FLASH_BASE,
.end = REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1,
.flags = IORESOURCE_MEM,
},
#ifdef CONFIG_REALVIEW_PB1176_SECURE_FLASH
{
.start = REALVIEW_PB1176_SEC_FLASH_BASE,
.end = REALVIEW_PB1176_SEC_FLASH_BASE + REALVIEW_PB1176_SEC_FLASH_SIZE - 1,
.flags = IORESOURCE_MEM,
},
#endif
};
static struct physmap_flash_data pb1176_rom_pdata = {
.probe_type = "map_rom",
.width = 4,
.nr_parts = 0,
};
static struct resource pb1176_rom_resources[] = {
/*
* This exposes the PB1176 DevChip ROM as an MTD ROM mapping.
* The reference manual states that this is actually a pseudo-ROM
* programmed in NVRAM.
*/
{
.start = REALVIEW_DC1176_ROM_BASE,
.end = REALVIEW_DC1176_ROM_BASE + SZ_16K - 1,
.flags = IORESOURCE_MEM,
}
};
static struct platform_device pb1176_rom_device = {
.name = "physmap-flash",
.id = -1,
.num_resources = ARRAY_SIZE(pb1176_rom_resources),
.resource = pb1176_rom_resources,
.dev = {
.platform_data = &pb1176_rom_pdata,
},
};
static struct resource realview_pb1176_smsc911x_resources[] = {
[0] = {
.start = REALVIEW_PB1176_ETH_BASE,
.end = REALVIEW_PB1176_ETH_BASE + SZ_64K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_PB1176_ETH,
.end = IRQ_PB1176_ETH,
.flags = IORESOURCE_IRQ,
},
};
static struct resource realview_pb1176_isp1761_resources[] = {
[0] = {
.start = REALVIEW_PB1176_USB_BASE,
.end = REALVIEW_PB1176_USB_BASE + SZ_128K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_PB1176_USB,
.end = IRQ_PB1176_USB,
.flags = IORESOURCE_IRQ,
},
};
static struct resource pmu_resource = {
.start = IRQ_DC1176_CORE_PMU,
.end = IRQ_DC1176_CORE_PMU,
.flags = IORESOURCE_IRQ,
};
static struct platform_device pmu_device = {
.name = "arm-pmu",
.id = ARM_PMU_DEVICE_CPU,
.num_resources = 1,
.resource = &pmu_resource,
};
static struct resource char_lcd_resources[] = {
{
.start = REALVIEW_CHAR_LCD_BASE,
.end = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
.flags = IORESOURCE_MEM,
},
{
.start = IRQ_PB1176_CHARLCD,
.end = IRQ_PB1176_CHARLCD,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device char_lcd_device = {
.name = "arm-charlcd",
.id = -1,
.num_resources = ARRAY_SIZE(char_lcd_resources),
.resource = char_lcd_resources,
};
static void __init gic_init_irq(void)
{
/* ARM1176 DevChip GIC, primary */
gic_init(0, IRQ_DC1176_GIC_START,
__io_address(REALVIEW_DC1176_GIC_DIST_BASE),
__io_address(REALVIEW_DC1176_GIC_CPU_BASE));
/* board GIC, secondary */
gic_init(1, IRQ_PB1176_GIC_START,
__io_address(REALVIEW_PB1176_GIC_DIST_BASE),
__io_address(REALVIEW_PB1176_GIC_CPU_BASE));
gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
}
static void __init realview_pb1176_timer_init(void)
{
timer0_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE);
timer1_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE) + 0x20;
timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE);
timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20;
realview_clk_init(__io_address(REALVIEW_SYS_BASE), true);
realview_timer_init(IRQ_DC1176_TIMER0);
}
static struct sys_timer realview_pb1176_timer = {
.init = realview_pb1176_timer_init,
};
static void realview_pb1176_restart(char mode, const char *cmd)
{
void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
__raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
__raw_writel(REALVIEW_PB1176_SYS_SOFT_RESET, reset_ctrl);
dsb();
}
static void realview_pb1176_fixup(struct tag *tags, char **from,
struct meminfo *meminfo)
{
/*
* RealView PB1176 only has 128MB of RAM mapped at 0.
*/
meminfo->bank[0].start = 0;
meminfo->bank[0].size = SZ_128M;
meminfo->nr_banks = 1;
}
static void __init realview_pb1176_init(void)
{
int i;
#ifdef CONFIG_CACHE_L2X0
/* 128Kb (16Kb/way) 8-way associativity. evmon/parity/share enabled. */
l2x0_init(__io_address(REALVIEW_PB1176_L220_BASE), 0x00730000, 0xfe000fff);
#endif
realview_flash_register(realview_pb1176_flash_resources,
ARRAY_SIZE(realview_pb1176_flash_resources));
platform_device_register(&pb1176_rom_device);
realview_eth_register(NULL, realview_pb1176_smsc911x_resources);
platform_device_register(&realview_i2c_device);
realview_usb_register(realview_pb1176_isp1761_resources);
platform_device_register(&pmu_device);
platform_device_register(&char_lcd_device);
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
}
MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.atag_offset = 0x100,
.fixup = realview_pb1176_fixup,
.map_io = realview_pb1176_map_io,
.init_early = realview_init_early,
.init_irq = gic_init_irq,
.timer = &realview_pb1176_timer,
.handle_irq = gic_handle_irq,
.init_machine = realview_pb1176_init,
#ifdef CONFIG_ZONE_DMA
.dma_zone_size = SZ_256M,
#endif
.restart = realview_pb1176_restart,
MACHINE_END
Reference in New Issue View Git Blame Copy Permalink