mirror of https://gitee.com/openkylin/linux.git
126 lines
3.1 KiB
C
126 lines
3.1 KiB
C
/***************************************************************************/
|
|
|
|
/*
|
|
* linux/arch/m68knommu/platform/5249/config.c
|
|
*
|
|
* Copyright (C) 2002, Greg Ungerer (gerg@snapgear.com)
|
|
*/
|
|
|
|
/***************************************************************************/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/param.h>
|
|
#include <linux/init.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/io.h>
|
|
#include <asm/machdep.h>
|
|
#include <asm/coldfire.h>
|
|
#include <asm/mcfsim.h>
|
|
#include <asm/mcfuart.h>
|
|
|
|
/***************************************************************************/
|
|
|
|
void coldfire_reset(void);
|
|
|
|
/***************************************************************************/
|
|
|
|
static struct mcf_platform_uart m5249_uart_platform[] = {
|
|
{
|
|
.mapbase = MCF_MBAR + MCFUART_BASE1,
|
|
.irq = 73,
|
|
},
|
|
{
|
|
.mapbase = MCF_MBAR + MCFUART_BASE2,
|
|
.irq = 74,
|
|
}
|
|
};
|
|
|
|
static struct platform_device m5249_uart = {
|
|
.name = "mcfuart",
|
|
.id = 0,
|
|
.dev.platform_data = m5249_uart_platform,
|
|
};
|
|
|
|
static struct platform_device *m5249_devices[] __initdata = {
|
|
&m5249_uart,
|
|
};
|
|
|
|
/***************************************************************************/
|
|
|
|
static void __init m5249_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_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
|
|
} else if (line == 1) {
|
|
writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
|
|
writeb(irq, MCFUART_BASE2 + MCFUART_UIVR);
|
|
mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
|
|
}
|
|
}
|
|
|
|
static void __init m5249_uarts_init(void)
|
|
{
|
|
const int nrlines = ARRAY_SIZE(m5249_uart_platform);
|
|
int line;
|
|
|
|
for (line = 0; (line < nrlines); line++)
|
|
m5249_uart_init_line(line, m5249_uart_platform[line].irq);
|
|
}
|
|
|
|
|
|
/***************************************************************************/
|
|
|
|
void mcf_autovector(unsigned int vec)
|
|
{
|
|
volatile unsigned char *mbar;
|
|
|
|
if ((vec >= 25) && (vec <= 31)) {
|
|
mbar = (volatile unsigned char *) MCF_MBAR;
|
|
vec = 0x1 << (vec - 24);
|
|
*(mbar + MCFSIM_AVR) |= vec;
|
|
mcf_setimr(mcf_getimr() & ~vec);
|
|
}
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
void mcf_settimericr(unsigned int timer, unsigned int level)
|
|
{
|
|
volatile unsigned char *icrp;
|
|
unsigned int icr, imr;
|
|
|
|
if (timer <= 2) {
|
|
switch (timer) {
|
|
case 2: icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
|
|
default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
|
|
}
|
|
|
|
icrp = (volatile unsigned char *) (MCF_MBAR + icr);
|
|
*icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
|
|
mcf_setimr(mcf_getimr() & ~imr);
|
|
}
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
void __init config_BSP(char *commandp, int size)
|
|
{
|
|
mcf_setimr(MCFSIM_IMR_MASKALL);
|
|
mach_reset = coldfire_reset;
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
static int __init init_BSP(void)
|
|
{
|
|
m5249_uarts_init();
|
|
platform_add_devices(m5249_devices, ARRAY_SIZE(m5249_devices));
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(init_BSP);
|
|
|
|
/***************************************************************************/
|