mirror of
https://github.com/adulau/aha.git
synced 2024-12-29 12:16:20 +00:00
132 lines
3.4 KiB
C
132 lines
3.4 KiB
C
/*
|
|
* 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 <asm/time.h>
|
|
#include <asm/reboot.h>
|
|
|
|
#include <asm/emma/emma2rh.h>
|
|
|
|
#define USE_CPU_COUNTER_TIMER /* whether we use cpu counter */
|
|
|
|
extern void markeins_led(const char *);
|
|
|
|
static int bus_frequency;
|
|
|
|
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 __initdata emma2rh_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 emma2rh_clock[reg];
|
|
}
|
|
|
|
void __init plat_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 markeins_board_init(void);
|
|
extern void markeins_irq_setup(void);
|
|
|
|
static void inline __init markeins_sio_setup(void)
|
|
{
|
|
}
|
|
|
|
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));
|
|
|
|
_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");
|
|
}
|