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[PATCH] m68knommu: 523x ColdFire processor init code 

Low level initialization code for the 523x ColdFire processor family.

Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Greg Ungerer 2005-09-02 10:42:52 +10:00 committed by Linus Torvalds
parent 138307b475
commit b5aaf3f71c
1 changed files with 82 additions and 0 deletions
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82
arch/m68knommu/platform/523x/config.c Normal file
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/***************************************************************************/
/*
* 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/config.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/dma.h>
#include <asm/traps.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfdma.h>
/***************************************************************************/
void coldfire_pit_tick(void);
void coldfire_pit_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
unsigned long coldfire_pit_offset(void);
void coldfire_trap_init(void);
void coldfire_reset(void);
/***************************************************************************/
/*
* DMA channel base address table.
*/
unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
MCF_MBAR + MCFDMA_BASE0,
};
unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
/***************************************************************************/
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 config_BSP(char *commandp, int size)
{
mcf_disableall();
#ifdef CONFIG_BOOTPARAM
strncpy(commandp, CONFIG_BOOTPARAM_STRING, size);
commandp[size-1] = 0;
#else
memset(commandp, 0, size);
#endif
mach_sched_init = coldfire_pit_init;
mach_tick = coldfire_pit_tick;
mach_gettimeoffset = coldfire_pit_offset;
mach_trap_init = coldfire_trap_init;
mach_reset = coldfire_reset;
}
/***************************************************************************/