openwrtv3/target/linux/ramips/files/arch/mips/ralink/rt288x/setup.c
Gabor Juhos 298202afb8 share machine registration code
SVN-Revision: 17456
2009-08-31 18:53:34 +00:00

101 lines
2.3 KiB
C

/*
* Ralink RT288x SoC specific setup
*
* Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Ralink's 2.6.21 BSP
*
* 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/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/serial_8250.h>
#include <asm/mips_machine.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <asm/mach-ralink/common.h>
#include <asm/mach-ralink/rt288x.h>
#include <asm/mach-ralink/rt288x_regs.h>
static void rt288x_restart(char *command)
{
rt288x_sysc_wr(RT2880_RESET_SYSTEM, SYSC_REG_RESET_CTRL);
while (1)
if (cpu_wait)
cpu_wait();
}
static void rt288x_halt(void)
{
while (1)
cpu_wait();
}
static void __init rt288x_early_serial_setup(void)
{
struct uart_port p;
int err;
memset(&p, 0, sizeof(p));
p.flags = UPF_SKIP_TEST;
p.iotype = UPIO_AU;
p.uartclk = rt288x_sys_freq;
p.regshift = 2;
p.type = PORT_16550A;
p.mapbase = RT2880_UART0_BASE;
p.membase = ioremap_nocache(p.mapbase, RT2880_UART0_SIZE);
p.line = 0;
p.irq = RT2880_INTC_IRQ_UART0;
err = early_serial_setup(&p);
if (err)
printk(KERN_ERR "RT288x: early UART0 registration failed %d\n",
err);
p.mapbase = RT2880_UART1_BASE;
p.membase = ioremap_nocache(p.mapbase, RT2880_UART1_SIZE);
p.line = 1;
p.irq = RT2880_INTC_IRQ_UART1;
err = early_serial_setup(&p);
if (err)
printk(KERN_ERR "RT288x: early UART1 registration failed %d\n",
err);
}
unsigned int __cpuinit get_c0_compare_irq(void)
{
return CP0_LEGACY_COMPARE_IRQ;
}
void __init ramips_soc_setup(void)
{
rt288x_sysc_base = ioremap_nocache(RT2880_SYSC_BASE, RT2880_SYSC_SIZE);
rt288x_memc_base = ioremap_nocache(RT2880_MEMC_BASE, RT2880_MEMC_SIZE);
rt288x_detect_sys_type();
rt288x_detect_sys_freq();
printk(KERN_INFO "%s running at %lu.%02lu MHz\n", ramips_sys_type,
rt288x_cpu_freq / 1000000,
(rt288x_cpu_freq % 1000000) * 100 / 1000000);
_machine_restart = rt288x_restart;
_machine_halt = rt288x_halt;
pm_power_off = rt288x_halt;
rt288x_early_serial_setup();
}
void __init plat_time_init(void)
{
mips_hpt_frequency = rt288x_cpu_freq / 2;
}