[MIPS] Remove dead DECstation boot code

#

# Makefile for the DECstation family specific parts of the kernel

#

netboot: all

	$(LD) -N -G 0 -T ld.ecoff ../../boot/zImage \

		dec_boot.o ramdisk.img -o nbImage

obj-y	 := decstation.o

clean:

	rm -f nbImage

/*

 * arch/mips/dec/decstation.c

 */

#include <asm/sections.h>

#define RELOC

#define INITRD

#define DEBUG_BOOT

/*

 * Magic number indicating REX PROM available on DECSTATION.

 */

#define	REX_PROM_MAGIC		0x30464354

#define REX_PROM_CLEARCACHE	0x7c/4

#define REX_PROM_PRINTF		0x30/4

#define VEC_RESET		0xBFC00000		/* Prom base address */

#define	PMAX_PROM_ENTRY(x)	(VEC_RESET+((x)*8))	/* Prom jump table */

#define	PMAX_PROM_PRINTF	PMAX_PROM_ENTRY(17)

#define PARAM	(k_start + 0x2000)

#define LOADER_TYPE (*(unsigned char *) (PARAM+0x210))

#define INITRD_START (*(unsigned long *) (PARAM+0x218))

#define INITRD_SIZE (*(unsigned long *) (PARAM+0x21c))

extern int _ftext;			/* begin and end of kernel image */

extern void kernel_entry(int, char **, unsigned long, int *);

void * memcpy(void * dest, const void *src, unsigned int count)

{

	unsigned long *tmp = (unsigned long *) dest, *s = (unsigned long *) src;

	count >>= 2;

	while (count--)

		*tmp++ = *s++;

	return dest;

}

void dec_entry(int argc, char **argv,

	       unsigned long magic, int *prom_vec)

{

	void (*rex_clear_cache)(void);

	int (*prom_printf)(char *, ...);

	unsigned long k_start, len;

	/*

	 * The DS5100 leaves cpu with BEV enabled, clear it.

	 */

	asm(	"lui\t$8,0x3000\n\t"

		"mtc0\t$8,$12\n\t"

		".section\t.sdata\n\t"

		".section\t.sbss\n\t"

		".section\t.text"

		: : : "$8");

#ifdef DEBUG_BOOT

	if (magic == REX_PROM_MAGIC) {

	prom_printf = (int (*)(char *, ...)) *(prom_vec + REX_PROM_PRINTF);

	} else {

		prom_printf = (int (*)(char *, ...)) PMAX_PROM_PRINTF;

	}

	prom_printf("Launching kernel...\n");

#endif

	k_start = (unsigned long) (&kernel_entry) & 0xffff0000;

#ifdef RELOC

	/*

	 * Now copy kernel image to its destination.

	 */

	len = ((unsigned long) (&_end) - k_start);

	memcpy((void *)k_start, &_ftext, len);

#endif

	if (magic == REX_PROM_MAGIC) {

		rex_clear_cache = (void (*)(void)) * (prom_vec + REX_PROM_CLEARCACHE);

		rex_clear_cache();

	}

	kernel_entry(argc, argv, magic, prom_vec);

}

OUTPUT_FORMAT("ecoff-littlemips")

OUTPUT_ARCH(mips)

ENTRY(dec_entry)

SECTIONS

{

  . = 0x80200000;

  .text :

  {

    _ftext = .;

    *(.text)

    *(.fixup)

  }

  .rdata :

  {

    *(.rodata .rodata.* .rdata)

  }

  .data :

  {

    . = ALIGN(0x1000);

    ramdisk.img (.data)

    *(.data)

  }

  .sdata :

  {

    *(.sdata)

  }

  _gp = .;

  .sbss :

  {

    *(.sbss)

    *(.scommon)

  }

  .bss :

  {

   *(.dynbss)

   *(.bss)

   *(COMMON)

  }

  /DISCARD/ : {

    *(.reginfo .mdebug .note)

  }

}