arm: Update mem* functions to newer versions

The memcpy/memset/memmove assembly implementations have been taken from
U-Boot, which originally got them from Linux. I turns out that they are
actually not that bad, but they could use an update. This patch pulls in
the current Linux upstream versions of those files, removing some old
U-Boot cruft such as checking whether the two pointers in a memcpy() are
equal (really now?) or side-stepping the R8 register because it was used
for special purposes. It also returns to the good old Linux
ENTRY/ENDPROC macros since we have them now anyway, and straightens out
the W() macro in preparation for unified thumb support.

Change-Id: I138af269b423bef0a237759ac29f1ee58ca206a0
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/182179
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
(cherry picked from commit 777127997bde5785b21d422d0b6eb04c4328b478)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6918
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>

2 files changed, 5 insertions, 62 deletions

diff --git a/src/arch/arm/include/arch/asm.h b/src/arch/arm/include/arch/asm.h
index 1c3f7a21c3..5f3e55f135 100644
--- a/src/arch/arm/include/arch/asm.h
+++ b/src/arch/arm/include/arch/asm.h
@@ -23,9 +23,14 @@
 #if defined __arm__
 #  define ARM(x...)	x
 #  define THUMB(x...)
+#  define W(instr)	instr
 #elif defined __thumb__
 #  define ARM(x...)
 #  define THUMB(x...)	x
+#  define W(instr)	instr.w
+#  if __COREBOOT_ARM_ARCH__ < 7
+#    error thumb mode has not been tested with ARM < v7!
+#  endif
 #else
 #  error Not in ARM or thumb mode!
 #endif
diff --git a/src/arch/arm/include/assembler.h b/src/arch/arm/include/assembler.h
deleted file mode 100644
index 10363c4e4e..0000000000
--- a/src/arch/arm/include/assembler.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- *  arch/arm/include/asm/assembler.h
- *
- *  Copyright (C) 1996-2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- *  This file contains arm architecture specific defines
- *  for the different processors.
- *
- *  Do not include any C declarations in this file - it is included by
- *  assembler source.
- */
-
-/*
- * Endian independent macros for shifting bytes within registers.
- */
-#ifndef __ARMEB__
-#define pull		lsr
-#define push		lsl
-#define get_byte_0	lsl #0
-#define get_byte_1	lsr #8
-#define get_byte_2	lsr #16
-#define get_byte_3	lsr #24
-#define put_byte_0	lsl #0
-#define put_byte_1	lsl #8
-#define put_byte_2	lsl #16
-#define put_byte_3	lsl #24
-#else
-#define pull		lsl
-#define push		lsr
-#define get_byte_0	lsr #24
-#define get_byte_1	lsr #16
-#define get_byte_2	lsr #8
-#define get_byte_3      lsl #0
-#define put_byte_0	lsl #24
-#define put_byte_1	lsl #16
-#define put_byte_2	lsl #8
-#define put_byte_3      lsl #0
-#endif
-
-/*
- * Data preload for architectures that support it
- */
-#if defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) || \
-	defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || \
-	defined(__ARM_ARCH_6T2__) || defined(__ARM_ARCH_6Z__) || \
-	defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_7A__) || \
-	defined(__ARM_ARCH_7R__)
-#define PLD(code...)	code
-#else
-#define PLD(code...)
-#endif
-
-/*
- * Cache aligned
- */
-#define CALGN(code...) code
-
-#define W(instr)	instr