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/*
* arch/mips/emma2rh/markeins/setup.c
* This file is setup for EMMA2RH Mark-eins.
*
* Copyright (C) NEC Electronics Corporation 2004-2006
*
* This file is based on the arch/mips/ddb5xxx/ddb5477/setup.c.
*
* Copyright 2001 MontaVista Software Inc.
*
* 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/kernel.h>
#include <linux/types.h>
#include <linux/initrd.h>
#include <linux/irq.h>
#include <linux/ide.h>
#include <linux/ioport.h>
#include <linux/param.h> /* for HZ */
#include <linux/root_dev.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <asm/cpu.h>
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
#include <asm/time.h>
#include <asm/bcache.h>
#include <asm/irq.h>
#include <asm/reboot.h>
#include <asm/gdb-stub.h>
#include <asm/traps.h>
#include <asm/debug.h>
#include <asm/emma2rh/emma2rh.h>
#define USE_CPU_COUNTER_TIMER /* whether we use cpu counter */
extern void markeins_led(const char *);
static int bus_frequency = 0;
static void markeins_machine_restart(char *command)
{
static void (*back_to_prom) (void) = (void (*)(void))0xbfc00000;
printk("cannot EMMA2RH Mark-eins restart.\n");
markeins_led("restart.");
back_to_prom();
}
static void markeins_machine_halt(void)
{
printk("EMMA2RH Mark-eins halted.\n");
markeins_led("halted.");
while (1) ;
}
static void markeins_machine_power_off(void)
{
printk("EMMA2RH Mark-eins halted. Please turn off the power.\n");
markeins_led("poweroff.");
while (1) ;
}
static unsigned long clock[4] = { 166500000, 187312500, 199800000, 210600000 };
static unsigned int __init detect_bus_frequency(unsigned long rtc_base)
{
u32 reg;
/* detect from boot strap */
reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0);
reg = (reg >> 4) & 0x3;
return clock[reg];
}
static void __init emma2rh_time_init(void)
{
u32 reg;
if (bus_frequency == 0)
bus_frequency = detect_bus_frequency(0);
reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0);
if ((reg & 0x3) == 0)
reg = (reg >> 6) & 0x3;
else {
reg = emma2rh_in32(EMMA2RH_BHIF_MAIN_CTRL);
reg = (reg >> 4) & 0x3;
}
mips_hpt_frequency = (bus_frequency * (4 + reg)) / 4 / 2;
}
static void __init emma2rh_timer_setup(struct irqaction *irq)
{
/* we are using the cpu counter for timer interrupts */
setup_irq(CPU_IRQ_BASE + 7, irq);
}
static void markeins_board_init(void);
extern void markeins_irq_setup(void);
static void inline __init markeins_sio_setup(void)
{
#ifdef CONFIG_KGDB_8250
struct uart_port emma_port;
memset(&emma_port, 0, sizeof(emma_port));
emma_port.flags =
UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
emma_port.iotype = UPIO_MEM;
emma_port.regshift = 4; /* I/O addresses are every 8 bytes */
emma_port.uartclk = 18544000; /* Clock rate of the chip */
emma_port.line = 0;
emma_port.mapbase = KSEG1ADDR(EMMA2RH_PFUR0_BASE + 3);
emma_port.membase = (u8*)emma_port.mapbase;
early_serial_setup(&emma_port);
emma_port.line = 1;
emma_port.mapbase = KSEG1ADDR(EMMA2RH_PFUR1_BASE + 3);
emma_port.membase = (u8*)emma_port.mapbase;
early_serial_setup(&emma_port);
emma_port.irq = EMMA2RH_IRQ_PFUR1;
kgdb8250_add_port(1, &emma_port);
#endif
}
void __init plat_mem_setup(void)
{
/* initialize board - we don't trust the loader */
markeins_board_init();
set_io_port_base(KSEG1ADDR(EMMA2RH_PCI_IO_BASE));
board_time_init = emma2rh_time_init;
board_timer_setup = emma2rh_timer_setup;
_machine_restart = markeins_machine_restart;
_machine_halt = markeins_machine_halt;
pm_power_off = markeins_machine_power_off;
/* setup resource limits */
ioport_resource.start = EMMA2RH_PCI_IO_BASE;
ioport_resource.end = EMMA2RH_PCI_IO_BASE + EMMA2RH_PCI_IO_SIZE - 1;
iomem_resource.start = EMMA2RH_IO_BASE;
iomem_resource.end = EMMA2RH_ROM_BASE - 1;
/* Reboot on panic */
panic_timeout = 180;
markeins_sio_setup();
}
static void __init markeins_board_init(void)
{
u32 val;
val = emma2rh_in32(EMMA2RH_PBRD_INT_EN); /* open serial interrupts. */
emma2rh_out32(EMMA2RH_PBRD_INT_EN, val | 0xaa);
val = emma2rh_in32(EMMA2RH_PBRD_CLKSEL); /* set serial clocks. */
emma2rh_out32(EMMA2RH_PBRD_CLKSEL, val | 0x5); /* 18MHz */
emma2rh_out32(EMMA2RH_PCI_CONTROL, 0);
markeins_led("MVL E2RH");
}
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