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/*

 *   FILE: head.c

 * AUTHOR: kma

 *  DESCR: Initialization code for the i960.

 */

#ident "$Id: head.c,v 1.1 2005-12-20 09:42:38 jcastillo Exp $"

#include <linux/autoconf.h>

#include <linux/kernel.h>

/*

 * So here we are! Running at ipl 31, in supervisor mode, on mon960's user

 * stack. Do we need to do much here? Let's just get right into start_kernel.

 */

int main(void)

{

        long oldac;

        extern void start_kernel(void);

        /* 64-bit math routines need the overflow mask bit set */

        __asm__ __volatile__

                ("modac %1, %1, %1" : "=r"(oldac) : "0"(1 << 12));

        /* Make the i960 think it's in an interrupt handler. This has the effect

         * of not switching to the interrupt stack for every interrupt. Of

         * course, we wouldn't need this if there were a sensible way of

         * specifying an interrupt stack short of reinitializing the CPU, but

         * such is life.

         *

         * XXX: this has the effect of using user stacks for interrupts too.

         * The world's a scary place.

         */

        __asm__ __volatile__ ("modpc    %1, %1, %1" : "=r"(oldac) : "0"(1<<13));

#ifdef CONFIG_CMDLINE_PROMPT

        /* do crazy command-line obtainments... */

#endif

        start_kernel();

        printk("XXX: start_kernel returned!!!\n");

        for(;;) ;

}