[U-Boot-Users] [RFC][MIPS] Remove mips_cache_lock

[Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>]

I don't know the background why this lock added. So if I miss something,
please let me know. Or I'll push this before merge window close().

========>

I don't see any reason why we have to lock cache line here. Maybe some
targets require this locking, but that's completely target specific re-
quirement and we should not have such things in global start codes.

Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
---

 cpu/mips/cache.S |   26 --------------------------
 cpu/mips/start.S |    5 -----
 2 files changed, 0 insertions(+), 31 deletions(-)


diff --git a/cpu/mips/cache.S b/cpu/mips/cache.S
index 443240e..9d793bf 100644
--- a/cpu/mips/cache.S
+++ b/cpu/mips/cache.S
@@ -237,29 +237,3 @@ dcache_disable:
 	j	ra
 
 	.end	dcache_disable
-
-/*******************************************************************************
-*
-* mips_cache_lock - lock RAM area pointed to by a0 in cache.
-*
-* RETURNS: N/A
-*
-*/
-#if defined(CONFIG_PURPLE)
-# define	CACHE_LOCK_SIZE	(CFG_DCACHE_SIZE/2)
-#else
-# define	CACHE_LOCK_SIZE	(CFG_DCACHE_SIZE)
-#endif
-	.globl	mips_cache_lock
-	.ent	mips_cache_lock
-mips_cache_lock:
-	li	a1, K0BASE - CACHE_LOCK_SIZE
-	addu	a0, a1
-	li	a2, CACHE_LOCK_SIZE
-	li	a3, CFG_CACHELINE_SIZE
-	move	a1, a2
-	icacheop(a0,a1,a2,a3,0x1d)
-
-	j	ra
-
-	.end	mips_cache_lock
diff --git a/cpu/mips/start.S b/cpu/mips/start.S
index c92b162..fd44da0 100644
--- a/cpu/mips/start.S
+++ b/cpu/mips/start.S
@@ -267,11 +267,6 @@ reset:
 
 	/* Set up temporary stack.
 	 */
-	li	a0, CFG_INIT_SP_OFFSET
-	la	t9, mips_cache_lock
-	jalr	t9
-	nop
-
 	li	t0, CFG_SDRAM_BASE + CFG_INIT_SP_OFFSET
 	la	sp, 0(t0)