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linux-pinenote/arch/arm/mach-sa1100/badge4.c
Russell King d9ca5839fd ARM: restart: sa1100: use new restart hook 
Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-05 12:57:19 +00:00

313 lines
7.2 KiB
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/*
* linux/arch/arm/mach-sa1100/badge4.c
*
* BadgePAD 4 specific initialization
*
* Tim Connors <connors@hpl.hp.com>
* Christopher Hoover <ch@hpl.hp.com>
*
* Copyright (C) 2002 Hewlett-Packard Company
*
* 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.
*
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/tty.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/errno.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/setup.h>
#include <mach/irqs.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <asm/hardware/sa1111.h>
#include <asm/mach/serial_sa1100.h>
#include <mach/badge4.h>
#include "generic.h"
static struct resource sa1111_resources[] = {
[0] = {
.start = BADGE4_SA1111_BASE,
.end = BADGE4_SA1111_BASE + 0x00001fff,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = BADGE4_IRQ_GPIO_SA1111,
.end = BADGE4_IRQ_GPIO_SA1111,
.flags = IORESOURCE_IRQ,
},
};
static struct sa1111_platform_data sa1111_info = {
.irq_base = IRQ_BOARD_END,
};
static u64 sa1111_dmamask = 0xffffffffUL;
static struct platform_device sa1111_device = {
.name = "sa1111",
.id = 0,
.dev = {
.dma_mask = &sa1111_dmamask,
.coherent_dma_mask = 0xffffffff,
.platform_data = &sa1111_info,
},
.num_resources = ARRAY_SIZE(sa1111_resources),
.resource = sa1111_resources,
};
static struct platform_device *devices[] __initdata = {
&sa1111_device,
};
static int __init badge4_sa1111_init(void)
{
/*
* Ensure that the memory bus request/grant signals are setup,
* and the grant is held in its inactive state
*/
sa1110_mb_disable();
/*
* Probe for SA1111.
*/
return platform_add_devices(devices, ARRAY_SIZE(devices));
}
/*
* 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit)
* Eight 4 KiW Parameter Bottom Blocks (64 KiB)
* Sixty-three 32 KiW Main Blocks (4032 Ki b)
*
* <or>
*
* 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit)
* Eight 4 KiW Parameter Bottom Blocks (64 KiB)
* One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b)
*/
static struct mtd_partition badge4_partitions[] = {
{
.name = "BLOB boot loader",
.offset = 0,
.size = 0x0000A000
}, {
.name = "params",
.offset = MTDPART_OFS_APPEND,
.size = 0x00006000
}, {
.name = "root",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL
}
};
static struct flash_platform_data badge4_flash_data = {
.map_name = "cfi_probe",
.parts = badge4_partitions,
.nr_parts = ARRAY_SIZE(badge4_partitions),
};
static struct resource badge4_flash_resource = {
.start = SA1100_CS0_PHYS,
.end = SA1100_CS0_PHYS + SZ_64M - 1,
.flags = IORESOURCE_MEM,
};
static int five_v_on __initdata = 0;
static int __init five_v_on_setup(char *ignore)
{
five_v_on = 1;
return 1;
}
__setup("five_v_on", five_v_on_setup);
static int __init badge4_init(void)
{
int ret;
if (!machine_is_badge4())
return -ENODEV;
/* LCD */
GPCR = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
BADGE4_GPIO_GPC_VID);
GPDR &= ~BADGE4_GPIO_INT_VID;
GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
BADGE4_GPIO_GPC_VID);
/* SDRAM SPD i2c */
GPCR = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
/* uart */
GPCR = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
/* CPLD muxsel0 input for mux/adc chip select */
GPCR = BADGE4_GPIO_MUXSEL0;
GPDR |= BADGE4_GPIO_MUXSEL0;
/* test points: J5, J6 as inputs, J7 outputs */
GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6);
GPCR = BADGE4_GPIO_TESTPT_J7;
GPDR |= BADGE4_GPIO_TESTPT_J7;
/* 5V supply rail. */
GPCR = BADGE4_GPIO_PCMEN5V; /* initially off */
GPDR |= BADGE4_GPIO_PCMEN5V;
/* CPLD sdram type inputs; set up by blob */
//GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0);
printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n",
!!(GPLR & BADGE4_GPIO_SDTYP1),
!!(GPLR & BADGE4_GPIO_SDTYP0));
/* SA1111 reset pin; set up by blob */
//GPSR = BADGE4_GPIO_SA1111_NRST;
//GPDR |= BADGE4_GPIO_SA1111_NRST;
/* power management cruft */
PGSR = 0;
PWER = 0;
PCFR = 0;
PSDR = 0;
PWER |= PWER_GPIO26; /* wake up on an edge from TESTPT_J5 */
PWER |= PWER_RTC; /* wake up if rtc fires */
/* drive sa1111_nrst during sleep */
PGSR |= BADGE4_GPIO_SA1111_NRST;
/* drive CPLD as is during sleep */
PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1));
/* Now bring up the SA-1111. */
ret = badge4_sa1111_init();
if (ret < 0)
printk(KERN_ERR
"%s: SA-1111 initialization failed (%d)\n",
__func__, ret);
/* maybe turn on 5v0 from the start */
badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on);
sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1);
return 0;
}
arch_initcall(badge4_init);
static unsigned badge4_5V_bitmap = 0;
void badge4_set_5V(unsigned subsystem, int on)
{
unsigned long flags;
unsigned old_5V_bitmap;
local_irq_save(flags);
old_5V_bitmap = badge4_5V_bitmap;
if (on) {
badge4_5V_bitmap |= subsystem;
} else {
badge4_5V_bitmap &= ~subsystem;
}
/* detect on->off and off->on transitions */
if ((!old_5V_bitmap) && (badge4_5V_bitmap)) {
/* was off, now on */
printk(KERN_INFO "%s: enabling 5V supply rail\n", __func__);
GPSR = BADGE4_GPIO_PCMEN5V;
} else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) {
/* was on, now off */
printk(KERN_INFO "%s: disabling 5V supply rail\n", __func__);
GPCR = BADGE4_GPIO_PCMEN5V;
}
local_irq_restore(flags);
}
EXPORT_SYMBOL(badge4_set_5V);
static struct map_desc badge4_io_desc[] __initdata = {
{ /* SRAM bank 1 */
.virtual = 0xf1000000,
.pfn = __phys_to_pfn(0x08000000),
.length = 0x00100000,
.type = MT_DEVICE
}, { /* SRAM bank 2 */
.virtual = 0xf2000000,
.pfn = __phys_to_pfn(0x10000000),
.length = 0x00100000,
.type = MT_DEVICE
}, { /* SA-1111 */
.virtual = 0xf4000000,
.pfn = __phys_to_pfn(0x48000000),
.length = 0x00100000,
.type = MT_DEVICE
}
};
static void
badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
{
if (!state) {
Ser1SDCR0 |= SDCR0_UART;
}
}
static struct sa1100_port_fns badge4_port_fns __initdata = {
//.get_mctrl = badge4_get_mctrl,
//.set_mctrl = badge4_set_mctrl,
.pm = badge4_uart_pm,
};
static void __init badge4_map_io(void)
{
sa1100_map_io();
iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));
sa1100_register_uart_fns(&badge4_port_fns);
sa1100_register_uart(0, 3);
sa1100_register_uart(1, 1);
}
MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
.atag_offset = 0x100,
.map_io = badge4_map_io,
.init_irq = sa1100_init_irq,
.timer = &sa1100_timer,
#ifdef CONFIG_SA1111
.dma_zone_size = SZ_1M,
#endif
.restart = sa11x0_restart,
MACHINE_END
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