powerpc: Move ppc64 boot wrapper code over to arch/powerpc

This also extends the code to handle 32-bit ELF vmlinux files as well
as 64-bit ones.  This is sufficient for booting on new-world 32-bit
powermacs (i.e. all recent machines).

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 58 deletions

diff --git a/arch/ppc64/boot/div64.S b/arch/ppc64/boot/div64.S
deleted file mode 100644
index 722f360a32a..00000000000
--- a/arch/ppc64/boot/div64.S
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Divide a 64-bit unsigned number by a 32-bit unsigned number.
- * This routine assumes that the top 32 bits of the dividend are
- * non-zero to start with.
- * On entry, r3 points to the dividend, which get overwritten with
- * the 64-bit quotient, and r4 contains the divisor.
- * On exit, r3 contains the remainder.
- *
- * Copyright (C) 2002 Paul Mackerras, IBM Corp.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#include "ppc_asm.h"
-
-	.globl __div64_32
-__div64_32:
-	lwz	r5,0(r3)	# get the dividend into r5/r6
-	lwz	r6,4(r3)
-	cmplw	r5,r4
-	li	r7,0
-	li	r8,0
-	blt	1f
-	divwu	r7,r5,r4	# if dividend.hi >= divisor,
-	mullw	r0,r7,r4	# quotient.hi = dividend.hi / divisor
-	subf.	r5,r0,r5	# dividend.hi %= divisor
-	beq	3f
-1:	mr	r11,r5		# here dividend.hi != 0
-	andis.	r0,r5,0xc000
-	bne	2f
-	cntlzw	r0,r5		# we are shifting the dividend right
-	li	r10,-1		# to make it < 2^32, and shifting
-	srw	r10,r10,r0	# the divisor right the same amount,
-	add	r9,r4,r10	# rounding up (so the estimate cannot
-	andc	r11,r6,r10	# ever be too large, only too small)
-	andc	r9,r9,r10
-	or	r11,r5,r11
-	rotlw	r9,r9,r0
-	rotlw	r11,r11,r0
-	divwu	r11,r11,r9	# then we divide the shifted quantities
-2:	mullw	r10,r11,r4	# to get an estimate of the quotient,
-	mulhwu	r9,r11,r4	# multiply the estimate by the divisor,
-	subfc	r6,r10,r6	# take the product from the divisor,
-	add	r8,r8,r11	# and add the estimate to the accumulated
-	subfe.	r5,r9,r5	# quotient
-	bne	1b
-3:	cmplw	r6,r4
-	blt	4f
-	divwu	r0,r6,r4	# perform the remaining 32-bit division
-	mullw	r10,r0,r4	# and get the remainder
-	add	r8,r8,r0
-	subf	r6,r10,r6
-4:	stw	r7,0(r3)	# return the quotient in *r3
-	stw	r8,4(r3)
-	mr	r3,r6		# return the remainder in r3
-	blr