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/***************************************************************************/
/*
* linux/arch/m68knommu/platform/527x/config.c
*
* Sub-architcture dependant initialization code for the Freescale
* 5270/5271 CPUs.
*
* Copyright (C) 1999-2004, Greg Ungerer (gerg@snapgear.com)
* Copyright (C) 2001-2004, SnapGear Inc. (www.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 m527x_uart_platform[] = {
{
.mapbase = MCF_MBAR + MCFUART_BASE1,
.irq = MCFINT_VECBASE + MCFINT_UART0,
},
{
.mapbase = MCF_MBAR + MCFUART_BASE2,
.irq = MCFINT_VECBASE + MCFINT_UART1,
},
{
.mapbase = MCF_MBAR + MCFUART_BASE3,
.irq = MCFINT_VECBASE + MCFINT_UART2,
},
{ },
};
static struct platform_device m527x_uart = {
.name = "mcfuart",
.id = 0,
.dev.platform_data = m527x_uart_platform,
};
static struct platform_device *m527x_devices[] __initdata = {
&m527x_uart,
};
/***************************************************************************/
#define INTC0 (MCF_MBAR + MCFICM_INTC0)
static void __init m527x_uart_init_line(int line, int irq)
{
u16 sepmask;
u32 imr;
if ((line < 0) || (line > 2))
return;
/* level 6, line based priority */
writeb(0x30+line, INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + line);
imr = readl(INTC0 + MCFINTC_IMRL);
imr &= ~((1 << (irq - MCFINT_VECBASE)) | 1);
writel(imr, INTC0 + MCFINTC_IMRL);
/*
* External Pin Mask Setting & Enable External Pin for Interface
*/
sepmask = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
if (line == 0)
sepmask |= UART0_ENABLE_MASK;
else if (line == 1)
sepmask |= UART1_ENABLE_MASK;
else if (line == 2)
sepmask |= UART2_ENABLE_MASK;
writew(sepmask, MCF_IPSBAR + MCF_GPIO_PAR_UART);
}
static void __init m527x_uarts_init(void)
{
const int nrlines = ARRAY_SIZE(m527x_uart_platform);
int line;
for (line = 0; (line < nrlines); line++)
m527x_uart_init_line(line, m527x_uart_platform[line].irq);
}
/***************************************************************************/
void mcf_disableall(void)
{
*((volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRH)) = 0xffffffff;
*((volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL)) = 0xffffffff;
}
/***************************************************************************/
void mcf_autovector(unsigned int vec)
{
/* Everything is auto-vectored on the 5272 */
}
/***************************************************************************/
void __init config_BSP(char *commandp, int size)
{
mcf_disableall();
mach_reset = coldfire_reset;
}
/***************************************************************************/
static int __init init_BSP(void)
{
m527x_uarts_init();
platform_add_devices(m527x_devices, ARRAY_SIZE(m527x_devices));
return 0;
}
arch_initcall(init_BSP);
/***************************************************************************/
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