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linux-next/arch/arm/mach-realview/realview_pbx.c
Catalin Marinas c97c5aa83c RealView: Add sparsemem support for the RealView PBX platform 
The RealView PBX board has two 512MB blocks of memory - one at
0x70000000 (with 256MB mirror at 0) and another at 0x20000000. Only the
block at 0x70000000 (or the mirror at 0) may be used for DMA (e.g.
framebuffer). This patch adds the sparsemem definitions to allow the use
of all the memory split as follows:

  256MB @ 0x00000000 (ZONE_DMA)
  512MB @ 0x20000000 (ZONE_NORMAL)
  256MB @ 0x80000000 (ZONE_NORMAL)

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2009-11-05 10:10:36 +00:00

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/*
* 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/sysdev.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl061.h>
#include <linux/amba/mmci.h>
#include <linux/io.h>
#include <asm/irq.h>
#include <asm/leds.h>
#include <asm/mach-types.h>
#include <asm/smp_twd.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_GIC_CPU_BASE),
.pfn = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_CPU_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,
.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 PBXCore AMBA devices
*/
#define GPIO2_IRQ { IRQ_PBX_GPIO2, NO_IRQ }
#define GPIO2_DMA { 0, 0 }
#define GPIO3_IRQ { IRQ_PBX_GPIO3, NO_IRQ }
#define GPIO3_DMA { 0, 0 }
#define AACI_IRQ { IRQ_PBX_AACI, NO_IRQ }
#define AACI_DMA { 0x80, 0x81 }
#define MMCI0_IRQ { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
#define MMCI0_DMA { 0x84, 0 }
#define KMI0_IRQ { IRQ_PBX_KMI0, NO_IRQ }
#define KMI0_DMA { 0, 0 }
#define KMI1_IRQ { IRQ_PBX_KMI1, NO_IRQ }
#define KMI1_DMA { 0, 0 }
#define PBX_SMC_IRQ { NO_IRQ, NO_IRQ }
#define PBX_SMC_DMA { 0, 0 }
#define MPMC_IRQ { NO_IRQ, NO_IRQ }
#define MPMC_DMA { 0, 0 }
#define PBX_CLCD_IRQ { IRQ_PBX_CLCD, NO_IRQ }
#define PBX_CLCD_DMA { 0, 0 }
#define DMAC_IRQ { IRQ_PBX_DMAC, NO_IRQ }
#define DMAC_DMA { 0, 0 }
#define SCTL_IRQ { NO_IRQ, NO_IRQ }
#define SCTL_DMA { 0, 0 }
#define PBX_WATCHDOG_IRQ { IRQ_PBX_WATCHDOG, NO_IRQ }
#define PBX_WATCHDOG_DMA { 0, 0 }
#define PBX_GPIO0_IRQ { IRQ_PBX_GPIO0, NO_IRQ }
#define PBX_GPIO0_DMA { 0, 0 }
#define GPIO1_IRQ { IRQ_PBX_GPIO1, NO_IRQ }
#define GPIO1_DMA { 0, 0 }
#define PBX_RTC_IRQ { IRQ_PBX_RTC, NO_IRQ }
#define PBX_RTC_DMA { 0, 0 }
#define SCI_IRQ { IRQ_PBX_SCI, NO_IRQ }
#define SCI_DMA { 7, 6 }
#define PBX_UART0_IRQ { IRQ_PBX_UART0, NO_IRQ }
#define PBX_UART0_DMA { 15, 14 }
#define PBX_UART1_IRQ { IRQ_PBX_UART1, NO_IRQ }
#define PBX_UART1_DMA { 13, 12 }
#define PBX_UART2_IRQ { IRQ_PBX_UART2, NO_IRQ }
#define PBX_UART2_DMA { 11, 10 }
#define PBX_UART3_IRQ { IRQ_PBX_UART3, NO_IRQ }
#define PBX_UART3_DMA { 0x86, 0x87 }
#define PBX_SSP_IRQ { IRQ_PBX_SSP, NO_IRQ }
#define PBX_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", PBX_UART3, NULL);
/* DevChip Primecells */
AMBA_DEVICE(smc, "dev:smc", PBX_SMC, NULL);
AMBA_DEVICE(sctl, "dev:sctl", SCTL, NULL);
AMBA_DEVICE(wdog, "dev:wdog", PBX_WATCHDOG, NULL);
AMBA_DEVICE(gpio0, "dev:gpio0", PBX_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", PBX_RTC, NULL);
AMBA_DEVICE(sci0, "dev:sci0", SCI, NULL);
AMBA_DEVICE(uart0, "dev:uart0", PBX_UART0, NULL);
AMBA_DEVICE(uart1, "dev:uart1", PBX_UART1, NULL);
AMBA_DEVICE(uart2, "dev:uart2", PBX_UART2, NULL);
AMBA_DEVICE(ssp0, "dev:ssp0", PBX_SSP, NULL);
/* Primecells on the NEC ISSP chip */
AMBA_DEVICE(clcd, "issp:clcd", PBX_CLCD, &clcd_plat_data);
AMBA_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 void __init gic_init_irq(void)
{
/* ARM PBX on-board GIC */
if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
gic_cpu_base_addr = __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE);
gic_dist_init(0, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
29);
gic_cpu_init(0, __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
} else {
gic_cpu_base_addr = __io_address(REALVIEW_PBX_GIC_CPU_BASE);
gic_dist_init(0, __io_address(REALVIEW_PBX_GIC_DIST_BASE),
IRQ_PBX_GIC_START);
gic_cpu_init(0, __io_address(REALVIEW_PBX_GIC_CPU_BASE));
}
}
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;
#ifdef CONFIG_LOCAL_TIMERS
if (core_tile_pbx11mp() || core_tile_pbxa9mp())
twd_base = __io_address(REALVIEW_PBX_TILE_TWD_BASE);
#endif
realview_timer_init(IRQ_PBX_TIMER0_1);
}
static struct sys_timer realview_pbx_timer = {
.init = realview_pbx_timer_init,
};
static void realview_pbx_fixup(struct machine_desc *mdesc, 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(mdesc, tags, from, meminfo);
#endif
}
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);
}
#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);
}
#ifdef CONFIG_LEDS
leds_event = realview_leds_event;
#endif
}
MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.phys_io = REALVIEW_PBX_UART0_BASE,
.io_pg_offst = (IO_ADDRESS(REALVIEW_PBX_UART0_BASE) >> 18) & 0xfffc,
.boot_params = PHYS_OFFSET + 0x00000100,
.fixup = realview_pbx_fixup,
.map_io = realview_pbx_map_io,
.init_irq = gic_init_irq,
.timer = &realview_pbx_timer,
.init_machine = realview_pbx_init,
MACHINE_END
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