forked from Minki/linux
f4a5437333
The ColdFire 5206 and 5206e CPU families are almost identical, we can easily merge the platform support code for them. All the differences are dealt with in the current include/asm/5206sim.h. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
128 lines
3.3 KiB
C
128 lines
3.3 KiB
C
/***************************************************************************/
|
|
|
|
/*
|
|
* linux/arch/m68knommu/platform/5206/config.c
|
|
*
|
|
* Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
|
|
* Copyright (C) 2000-2001, Lineo Inc. (www.lineo.com)
|
|
*/
|
|
|
|
/***************************************************************************/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/param.h>
|
|
#include <linux/init.h>
|
|
#include <linux/io.h>
|
|
#include <asm/machdep.h>
|
|
#include <asm/coldfire.h>
|
|
#include <asm/mcfsim.h>
|
|
#include <asm/mcfuart.h>
|
|
|
|
/***************************************************************************/
|
|
|
|
static struct mcf_platform_uart m5206_uart_platform[] = {
|
|
{
|
|
.mapbase = MCF_MBAR + MCFUART_BASE1,
|
|
.irq = 73,
|
|
},
|
|
{
|
|
.mapbase = MCF_MBAR + MCFUART_BASE2,
|
|
.irq = 74,
|
|
},
|
|
{ },
|
|
};
|
|
|
|
static struct platform_device m5206_uart = {
|
|
.name = "mcfuart",
|
|
.id = 0,
|
|
.dev.platform_data = m5206_uart_platform,
|
|
};
|
|
|
|
static struct platform_device *m5206_devices[] __initdata = {
|
|
&m5206_uart,
|
|
};
|
|
|
|
/***************************************************************************/
|
|
|
|
static void __init m5206_uart_init_line(int line, int irq)
|
|
{
|
|
if (line == 0) {
|
|
writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
|
|
writeb(irq, MCFUART_BASE1 + MCFUART_UIVR);
|
|
mcf_mapirq2imr(irq, MCFINTC_UART0);
|
|
} else if (line == 1) {
|
|
writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
|
|
writeb(irq, MCFUART_BASE2 + MCFUART_UIVR);
|
|
mcf_mapirq2imr(irq, MCFINTC_UART1);
|
|
}
|
|
}
|
|
|
|
static void __init m5206_uarts_init(void)
|
|
{
|
|
const int nrlines = ARRAY_SIZE(m5206_uart_platform);
|
|
int line;
|
|
|
|
for (line = 0; (line < nrlines); line++)
|
|
m5206_uart_init_line(line, m5206_uart_platform[line].irq);
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
static void __init m5206_timers_init(void)
|
|
{
|
|
/* Timer1 is always used as system timer */
|
|
writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI3,
|
|
MCF_MBAR + MCFSIM_TIMER1ICR);
|
|
mcf_mapirq2imr(MCF_IRQ_TIMER, MCFINTC_TIMER1);
|
|
|
|
#ifdef CONFIG_HIGHPROFILE
|
|
/* Timer2 is to be used as a high speed profile timer */
|
|
writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL7 | MCFSIM_ICR_PRI3,
|
|
MCF_MBAR + MCFSIM_TIMER2ICR);
|
|
mcf_mapirq2imr(MCF_IRQ_PROFILER, MCFINTC_TIMER2);
|
|
#endif
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
void m5206_cpu_reset(void)
|
|
{
|
|
local_irq_disable();
|
|
/* Set watchdog to soft reset, and enabled */
|
|
__raw_writeb(0xc0, MCF_MBAR + MCFSIM_SYPCR);
|
|
for (;;)
|
|
/* wait for watchdog to timeout */;
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
void __init config_BSP(char *commandp, int size)
|
|
{
|
|
#if defined(CONFIG_NETtel)
|
|
/* Copy command line from FLASH to local buffer... */
|
|
memcpy(commandp, (char *) 0xf0004000, size);
|
|
commandp[size-1] = 0;
|
|
#endif /* CONFIG_NETtel */
|
|
|
|
mach_reset = m5206_cpu_reset;
|
|
m5206_timers_init();
|
|
m5206_uarts_init();
|
|
|
|
/* Only support the external interrupts on their primary level */
|
|
mcf_mapirq2imr(25, MCFINTC_EINT1);
|
|
mcf_mapirq2imr(28, MCFINTC_EINT4);
|
|
mcf_mapirq2imr(31, MCFINTC_EINT7);
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
static int __init init_BSP(void)
|
|
{
|
|
platform_add_devices(m5206_devices, ARRAY_SIZE(m5206_devices));
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(init_BSP);
|
|
|
|
/***************************************************************************/
|