redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity
alistair23-linux/arch/arm/mach-realview/realview_pbx.c
Linus Torvalds 9cd11c0c47 ARM: soc: multiplatform enablement 
This is a pretty significant branch. It's the introduction of the
 first multiplatform support on ARM, and with this (and the later
 branch) merged, it is now possible to build one kernel that contains
 support for highbank, vexpress, mvebu, socfpga, and picoxcell. More
 platforms will be convered over in the next few releases.
 
 Two critical last things had to be done for this to be practical and
 possible:
 * Today each platform has its own include directory under
   mach-<mach>/include/mach/*, and traditionally that is where a lot of
   driver/platform shared definitions have gone, such as platform data
   structures. They now need to move out to a common location instead,
   and this branch moves a large number of those out to
   include/linux/platform_data.
 * Each platform used to list the device trees to compile for its
   boards in mach-<mach>/Makefile.boot.
 
 Both of the above changes will mean that there are some merge
 conflicts to come (and some to resolve here). It's a one-time move and
 once it settles in, we should be good for quite a while. Sorry for the
 overhead.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJQaO7aAAoJEIwa5zzehBx3bUIP/02U8PhkHJJrrowyIsWRBOql
 7LPJ53PRRgrpBdmEGzFD3TO3zaNyrjQRbYgNDvzHMO6NAMNvdRFouuWYjO11/tuB
 i32zssXCC+eUOEgbAo/U/lYq+UOvqw9gv6mU+3+i3OcGEhdKOaoT/DSLPQC4hoDm
 222TeLfFB3HJXu5n720dEQ9V3fO6TS1+bbh8TU3cjHqzceXsOrffZqOA5CQxUcRr
 KWwOjA0nALDwWcqgv45GJNwY3GTyAQ/hPMQavnuWK0voJ+qUYk5HftKocAK7C+py
 0T0OFOAHTwtyhvzJBxLC84M6Ox465BYXyeNjIB+2nG/Um9+mDoP0dnWpGy4c7DMU
 P5hyqbeLGeqjUXQuYtRmgMMc3UeHKoUGAfXW9eMsjLa6/M4NLGv//7E7LbZPpgMZ
 obkjwuesmcaYn/FRyj/yFmC35YlF4oCLziVzEtURZw3eKHHSUlhkTDSMNnkcZ0kZ
 Vv7kFxnD2Y46ixiwSJv30ErQnVkgI3MdqDlDxkE8r5+phYuK4gCrNaJtiwRh/oNw
 cFhpPxKuA0sJ9b6YRTzjC45eT/XZomEEr/uifCFeRNaCquyjYP00Mm8F0flSqwx9
 zi+emzPAwNmk1bvxMUM/idGnaj0V4p+BAYUAvkbSoqU1p1flzyhU88fGTSIyKOt6
 K5TCDS2v5hrVykK9TDwl
 =Tc6y
 -----END PGP SIGNATURE-----

Merge tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM soc multiplatform enablement from Olof Johansson:
 "This is a pretty significant branch.  It's the introduction of the
  first multiplatform support on ARM, and with this (and the later
  branch) merged, it is now possible to build one kernel that contains
  support for highbank, vexpress, mvebu, socfpga, and picoxcell.  More
  platforms will be convered over in the next few releases.

  Two critical last things had to be done for this to be practical and
  possible:
   * Today each platform has its own include directory under
     mach-<mach>/include/mach/*, and traditionally that is where a lot
     of driver/platform shared definitions have gone, such as platform
     data structures.  They now need to move out to a common location
     instead, and this branch moves a large number of those out to
     include/linux/platform_data.
   * Each platform used to list the device trees to compile for its
     boards in mach-<mach>/Makefile.boot.

  Both of the above changes will mean that there are some merge
  conflicts to come (and some to resolve here).  It's a one-time move
  and once it settles in, we should be good for quite a while.  Sorry
  for the overhead."

Fix conflicts as per Olof.

* tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (51 commits)
  ARM: add v7 multi-platform defconfig
  ARM: msm: Move core.h contents into common.h
  ARM: highbank: call highbank_pm_init from .init_machine
  ARM: dtb: move all dtb targets to common Makefile
  ARM: spear: move platform_data definitions
  ARM: samsung: move platform_data definitions
  ARM: orion: move platform_data definitions
  ARM: vexpress: convert to multi-platform
  ARM: initial multiplatform support
  ARM: mvebu: move armada-370-xp.h in mach dir
  ARM: vexpress: remove dependency on mach/* headers
  ARM: picoxcell: remove dependency on mach/* headers
  ARM: move all dtb targets out of Makefile.boot
  ARM: picoxcell: move debug macros to include/debug
  ARM: socfpga: move debug macros to include/debug
  ARM: mvebu: move debug macros to include/debug
  ARM: vexpress: move debug macros to include/debug
  ARM: highbank: move debug macros to include/debug
  ARM: move debug macros to common location
  ARM: make mach/gpio.h headers optional
  ...
2012-10-01 19:11:38 -07:00

415 lines
11 KiB
C
Raw Blame History

/*
* arch/arm/mach-realview/realview_pbx.c
*
* Copyright (C) 2009 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 version 2 as
* published by the Free Software Foundation.
*
* 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/io.h>
#include <linux/platform_data/clk-realview.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <asm/smp_twd.h>
#include <asm/pgtable.h>
#include <asm/hardware/gic.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include <mach/hardware.h>
#include <mach/board-pbx.h>
#include <mach/irqs.h>
#include "core.h"
static struct map_desc realview_pbx_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_PBX_GIC_CPU_BASE),
.pfn = __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE),
.pfn = __phys_to_pfn(REALVIEW_PBX_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_PBX_TIMER0_1_BASE),
.pfn = __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE),
.pfn = __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
},
#ifdef CONFIG_PCI
{
.virtual = PCIX_UNIT_BASE,
.pfn = __phys_to_pfn(REALVIEW_PBX_PCI_BASE),
.length = REALVIEW_PBX_PCI_BASE_SIZE,
.type = MT_DEVICE,
},
#endif
#ifdef CONFIG_DEBUG_LL
{
.virtual = IO_ADDRESS(REALVIEW_PBX_UART0_BASE),
.pfn = __phys_to_pfn(REALVIEW_PBX_UART0_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
},
#endif
};
static struct map_desc realview_local_io_desc[] __initdata = {
{
.virtual = IO_ADDRESS(REALVIEW_PBX_TILE_SCU_BASE),
.pfn = __phys_to_pfn(REALVIEW_PBX_TILE_SCU_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE),
.pfn = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE),
.pfn = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE),
.length = SZ_8K,
.type = MT_DEVICE,
}
};
static void __init realview_pbx_map_io(void)
{
iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
if (core_tile_pbx11mp() || core_tile_pbxa9mp())
iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_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 PBXCore AMBA devices
*/
#define GPIO2_IRQ { IRQ_PBX_GPIO2 }
#define GPIO3_IRQ { IRQ_PBX_GPIO3 }
#define AACI_IRQ { IRQ_PBX_AACI }
#define MMCI0_IRQ { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
#define KMI0_IRQ { IRQ_PBX_KMI0 }
#define KMI1_IRQ { IRQ_PBX_KMI1 }
#define PBX_SMC_IRQ { }
#define MPMC_IRQ { }
#define PBX_CLCD_IRQ { IRQ_PBX_CLCD }
#define DMAC_IRQ { IRQ_PBX_DMAC }
#define SCTL_IRQ { }
#define PBX_WATCHDOG_IRQ { IRQ_PBX_WATCHDOG }
#define PBX_GPIO0_IRQ { IRQ_PBX_GPIO0 }
#define GPIO1_IRQ { IRQ_PBX_GPIO1 }
#define PBX_RTC_IRQ { IRQ_PBX_RTC }
#define SCI_IRQ { IRQ_PBX_SCI }
#define PBX_UART0_IRQ { IRQ_PBX_UART0 }
#define PBX_UART1_IRQ { IRQ_PBX_UART1 }
#define PBX_UART2_IRQ { IRQ_PBX_UART2 }
#define PBX_UART3_IRQ { IRQ_PBX_UART3 }
#define PBX_SSP_IRQ { IRQ_PBX_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(uart3, "fpga:uart3", PBX_UART3, NULL);
/* DevChip Primecells */
AHB_DEVICE(smc, "dev:smc", PBX_SMC, NULL);
AHB_DEVICE(sctl, "dev:sctl", SCTL, NULL);
APB_DEVICE(wdog, "dev:wdog", PBX_WATCHDOG, NULL);
APB_DEVICE(gpio0, "dev:gpio0", PBX_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", PBX_RTC, NULL);
APB_DEVICE(sci0, "dev:sci0", SCI, NULL);
APB_DEVICE(uart0, "dev:uart0", PBX_UART0, NULL);
APB_DEVICE(uart1, "dev:uart1", PBX_UART1, NULL);
APB_DEVICE(uart2, "dev:uart2", PBX_UART2, NULL);
APB_DEVICE(ssp0, "dev:ssp0", PBX_SSP, &ssp0_plat_data);
/* Primecells on the NEC ISSP chip */
AHB_DEVICE(clcd, "issp:clcd", PBX_CLCD, &clcd_plat_data);
AHB_DEVICE(dmac, "issp:dmac", DMAC, 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 PB-X platform devices
*/
static struct resource realview_pbx_flash_resources[] = {
[0] = {
.start = REALVIEW_PBX_FLASH0_BASE,
.end = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = REALVIEW_PBX_FLASH1_BASE,
.end = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
.flags = IORESOURCE_MEM,
},
};
static struct resource realview_pbx_smsc911x_resources[] = {
[0] = {
.start = REALVIEW_PBX_ETH_BASE,
.end = REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_PBX_ETH,
.end = IRQ_PBX_ETH,
.flags = IORESOURCE_IRQ,
},
};
static struct resource realview_pbx_isp1761_resources[] = {
[0] = {
.start = REALVIEW_PBX_USB_BASE,
.end = REALVIEW_PBX_USB_BASE + SZ_128K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_PBX_USB,
.end = IRQ_PBX_USB,
.flags = IORESOURCE_IRQ,
},
};
static struct resource pmu_resources[] = {
[0] = {
.start = IRQ_PBX_PMU_CPU0,
.end = IRQ_PBX_PMU_CPU0,
.flags = IORESOURCE_IRQ,
},
[1] = {
.start = IRQ_PBX_PMU_CPU1,
.end = IRQ_PBX_PMU_CPU1,
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = IRQ_PBX_PMU_CPU2,
.end = IRQ_PBX_PMU_CPU2,
.flags = IORESOURCE_IRQ,
},
[3] = {
.start = IRQ_PBX_PMU_CPU3,
.end = IRQ_PBX_PMU_CPU3,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device pmu_device = {
.name = "arm-pmu",
.id = -1,
.num_resources = ARRAY_SIZE(pmu_resources),
.resource = pmu_resources,
};
static void __init gic_init_irq(void)
{
/* ARM PBX on-board GIC */
if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
gic_init(0, 29, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
__io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
} else {
gic_init(0, IRQ_PBX_GIC_START,
__io_address(REALVIEW_PBX_GIC_DIST_BASE),
__io_address(REALVIEW_PBX_GIC_CPU_BASE));
}
}
#ifdef CONFIG_HAVE_ARM_TWD
static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
REALVIEW_PBX_TILE_TWD_BASE,
IRQ_LOCALTIMER);
static void __init realview_pbx_twd_init(void)
{
int err = twd_local_timer_register(&twd_local_timer);
if (err)
pr_err("twd_local_timer_register failed %d\n", err);
}
#else
#define realview_pbx_twd_init() do { } while(0)
#endif
static void __init realview_pbx_timer_init(void)
{
timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
realview_timer_init(IRQ_PBX_TIMER0_1);
realview_pbx_twd_init();
}
static struct sys_timer realview_pbx_timer = {
.init = realview_pbx_timer_init,
};
static void realview_pbx_fixup(struct tag *tags, char **from,
struct meminfo *meminfo)
{
#ifdef CONFIG_SPARSEMEM
/*
* Memory configuration with SPARSEMEM enabled on RealView PBX (see
* asm/mach/memory.h for more information).
*/
meminfo->bank[0].start = 0;
meminfo->bank[0].size = SZ_256M;
meminfo->bank[1].start = 0x20000000;
meminfo->bank[1].size = SZ_512M;
meminfo->bank[2].start = 0x80000000;
meminfo->bank[2].size = SZ_256M;
meminfo->nr_banks = 3;
#else
realview_fixup(tags, from, meminfo);
#endif
}
static void realview_pbx_restart(char mode, const char *cmd)
{
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);
__raw_writel(0x00F0, reset_ctrl);
__raw_writel(0x00F4, reset_ctrl);
dsb();
}
static void __init realview_pbx_init(void)
{
int i;
#ifdef CONFIG_CACHE_L2X0
if (core_tile_pbxa9mp()) {
void __iomem *l2x0_base =
__io_address(REALVIEW_PBX_TILE_L220_BASE);
/* set RAM latencies to 1 cycle for eASIC */
writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL);
writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL);
/* 16KB way size, 8-way associativity, parity disabled
* Bits: .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
platform_device_register(&pmu_device);
}
#endif
realview_flash_register(realview_pbx_flash_resources,
ARRAY_SIZE(realview_pbx_flash_resources));
realview_eth_register(NULL, realview_pbx_smsc911x_resources);
platform_device_register(&realview_i2c_device);
platform_device_register(&realview_cf_device);
realview_usb_register(realview_pbx_isp1761_resources);
for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
struct amba_device *d = amba_devs[i];
amba_device_register(d, &iomem_resource);
}
}
MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.atag_offset = 0x100,
.smp = smp_ops(realview_smp_ops),
.fixup = realview_pbx_fixup,
.map_io = realview_pbx_map_io,
.init_early = realview_init_early,
.init_irq = gic_init_irq,
.timer = &realview_pbx_timer,
.handle_irq = gic_handle_irq,
.init_machine = realview_pbx_init,
#ifdef CONFIG_ZONE_DMA
.dma_zone_size = SZ_256M,
#endif
.restart = realview_pbx_restart,
MACHINE_END
View git blame Copy permalink