4b61a353e4
Switch to platform style configuration for 523x ColdFire parts. Initial support is for the UARTs. DMA support moved to common code for all ColdFire parts. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/***************************************************************************/
|
|
|
|
/*
|
|
* linux/arch/m68knommu/platform/523x/config.c
|
|
*
|
|
* Sub-architcture dependant initialization code for the Freescale
|
|
* 523x CPUs.
|
|
*
|
|
* Copyright (C) 1999-2005, Greg Ungerer (gerg@snapgear.com)
|
|
* Copyright (C) 2001-2003, 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 m523x_uart_platform[] = {
|
|
{
|
|
.mapbase = MCF_MBAR + MCFUART_BASE1,
|
|
.irq = MCFINT_VECBASE + MCFINT_UART0,
|
|
},
|
|
{
|
|
.mapbase = MCF_MBAR + MCFUART_BASE2,
|
|
.irq = MCFINT_VECBASE + MCFINT_UART0 + 1,
|
|
},
|
|
{
|
|
.mapbase = MCF_MBAR + MCFUART_BASE3,
|
|
.irq = MCFINT_VECBASE + MCFINT_UART0 + 2,
|
|
},
|
|
{ },
|
|
};
|
|
|
|
static struct platform_device m523x_uart = {
|
|
.name = "mcfuart",
|
|
.id = 0,
|
|
.dev.platform_data = m523x_uart_platform,
|
|
};
|
|
|
|
static struct platform_device *m523x_devices[] __initdata = {
|
|
&m523x_uart,
|
|
};
|
|
|
|
/***************************************************************************/
|
|
|
|
#define INTC0 (MCF_MBAR + MCFICM_INTC0)
|
|
|
|
static void __init m523x_uart_init_line(int line, int irq)
|
|
{
|
|
u32 imr;
|
|
|
|
if ((line < 0) || (line > 2))
|
|
return;
|
|
|
|
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);
|
|
}
|
|
|
|
static void __init m523x_uarts_init(void)
|
|
{
|
|
const int nrlines = ARRAY_SIZE(m523x_uart_platform);
|
|
int line;
|
|
|
|
for (line = 0; (line < nrlines); line++)
|
|
m523x_uart_init_line(line, m523x_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 523x */
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
void __init config_BSP(char *commandp, int size)
|
|
{
|
|
mcf_disableall();
|
|
mach_reset = coldfire_reset;
|
|
m523x_uarts_init();
|
|
}
|
|
|
|
/***************************************************************************/
|
|
|
|
static int __init init_BSP(void)
|
|
{
|
|
platform_add_devices(m523x_devices, ARRAY_SIZE(m523x_devices));
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(init_BSP);
|
|
|
|
/***************************************************************************/
|