blob: 578f6496ffd40c07e6b6f2c4458a9414a6564fc8 (
plain) (
tree)
|
|
/*
* init.c, Common initialization routines for NEC VR4100 series.
*
* Copyright (C) 2003-2005 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
*
* 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/ioport.h>
#include <linux/irq.h>
#include <linux/string.h>
#include <asm/bootinfo.h>
#include <asm/time.h>
#include <asm/vr41xx/vr41xx.h>
#define IO_MEM_RESOURCE_START 0UL
#define IO_MEM_RESOURCE_END 0x1fffffffUL
static void __init iomem_resource_init(void)
{
iomem_resource.start = IO_MEM_RESOURCE_START;
iomem_resource.end = IO_MEM_RESOURCE_END;
}
static void __init setup_timer_frequency(void)
{
unsigned long tclock;
tclock = vr41xx_get_tclock_frequency();
if (current_cpu_data.processor_id == PRID_VR4131_REV2_0 ||
current_cpu_data.processor_id == PRID_VR4131_REV2_1)
mips_hpt_frequency = tclock / 2;
else
mips_hpt_frequency = tclock / 4;
}
static void __init setup_timer_irq(struct irqaction *irq)
{
setup_irq(TIMER_IRQ, irq);
}
static void __init timer_init(void)
{
board_time_init = setup_timer_frequency;
board_timer_setup = setup_timer_irq;
}
void __init plat_setup(void)
{
vr41xx_calculate_clock_frequency();
timer_init();
iomem_resource_init();
}
void __init prom_init(void)
{
int argc, i;
char **argv;
argc = fw_arg0;
argv = (char **)fw_arg1;
for (i = 1; i < argc; i++) {
strcat(arcs_cmdline, argv[i]);
if (i < (argc - 1))
strcat(arcs_cmdline, " ");
}
}
unsigned long __init prom_free_prom_memory (void)
{
return 0UL;
}
|
