[U-Boot] [PATCH 8/8] armv7: adapt s5pc1xx to the new cache maintenance framework

[Aneesh V]

adapt s5pc1xx to the new layered cache maintenance framework

Signed-off-by: Aneesh V <aneesh at ti.com>
---
 arch/arm/cpu/armv7/s5pc1xx/cache.S            |   86 +-----------------------
 arch/arm/cpu/armv7/s5pc1xx/clock.c            |   12 ++++
 arch/arm/include/asm/arch-s5pc1xx/sys_proto.h |    4 +-
 3 files changed, 18 insertions(+), 84 deletions(-)

diff --git a/arch/arm/cpu/armv7/s5pc1xx/cache.S b/arch/arm/cpu/armv7/s5pc1xx/cache.S
index 7734b32..e62ad75 100644
--- a/arch/arm/cpu/armv7/s5pc1xx/cache.S
+++ b/arch/arm/cpu/armv7/s5pc1xx/cache.S
@@ -23,96 +23,18 @@
  * MA 02111-1307 USA
  */
 
-#include <asm/arch/cpu.h>
-
 .align 5
-.global invalidate_dcache
-.global l2_cache_enable
-.global l2_cache_disable
-
-/*
- * invalidate_dcache()
- * Invalidate the whole D-cache.
- *
- * Corrupted registers: r0-r5, r7, r9-r11
- */
-invalidate_dcache:
-	stmfd	r13!, {r0 - r5, r7, r9 - r12, r14}
-
-	cmp	r0, #0xC100			@ check if the cpu is s5pc100
-
-	beq	finished_inval			@ s5pc100 doesn't need this
-						@ routine
-	mrc	p15, 1, r0, c0, c0, 1		@ read clidr
-	ands	r3, r0, #0x7000000		@ extract loc from clidr
-	mov	r3, r3, lsr #23			@ left align loc bit field
-	beq	finished_inval			@ if loc is 0, then no need to
-						@ clean
-	mov	r10, #0				@ start clean at cache level 0
-inval_loop1:
-	add	r2, r10, r10, lsr #1		@ work out 3x current cache
-						@ level
-	mov	r1, r0, lsr r2			@ extract cache type bits from
-						@ clidr
-	and	r1, r1, #7			@ mask of the bits for current
-						@ cache only
-	cmp	r1, #2				@ see what cache we have at
-						@ this level
-	blt	skip_inval			@ skip if no cache, or just
-						@ i-cache
-	mcr	p15, 2, r10, c0, c0, 0		@ select current cache level
-						@ in cssr
-	mov	r2, #0				@ operand for mcr SBZ
-	mcr	p15, 0, r2, c7, c5, 4		@ flush prefetch buffer to
-						@ sych the new cssr&csidr,
-						@ with armv7 this is 'isb',
-						@ but we compile with armv5
-	mrc	p15, 1, r1, c0, c0, 0		@ read the new csidr
-	and	r2, r1, #7			@ extract the length of the
-						@ cache lines
-	add	r2, r2, #4			@ add 4 (line length offset)
-	ldr	r4, =0x3ff
-	ands	r4, r4, r1, lsr #3		@ find maximum number on the
-						@ way size
-	clz	r5, r4				@ find bit position of way
-						@ size increment
-	ldr	r7, =0x7fff
-	ands	r7, r7, r1, lsr #13		@ extract max number of the
-						@ index size
-inval_loop2:
-	mov	r9, r4				@ create working copy of max
-						@ way size
-inval_loop3:
-	orr	r11, r10, r9, lsl r5		@ factor way and cache number
-						@ into r11
-	orr	r11, r11, r7, lsl r2		@ factor index number into r11
-	mcr	p15, 0, r11, c7, c6, 2		@ invalidate by set/way
-	subs	r9, r9, #1			@ decrement the way
-	bge	inval_loop3
-	subs	r7, r7, #1			@ decrement the index
-	bge	inval_loop2
-skip_inval:
-	add	r10, r10, #2			@ increment cache number
-	cmp	r3, r10
-	bgt	inval_loop1
-finished_inval:
-	mov	r10, #0				@ swith back to cache level 0
-	mcr	p15, 2, r10, c0, c0, 0		@ select current cache level
-						@ in cssr
-	mcr	p15, 0, r10, c7, c5, 4		@ flush prefetch buffer,
-						@ with armv7 this is 'isb',
-						@ but we compile with armv5
-
-	ldmfd	r13!, {r0 - r5, r7, r9 - r12, pc}
+.global ca8_l2_cache_enable
+.global ca8_l2_cache_disable
 
-l2_cache_enable:
+ca8_l2_cache_enable:
 	push	{r0, r1, r2, lr}
 	mrc	15, 0, r3, cr1, cr0, 1
 	orr	r3, r3, #2
 	mcr	15, 0, r3, cr1, cr0, 1
 	pop	{r1, r2, r3, pc}
 
-l2_cache_disable:
+ca8_l2_cache_disable:
 	push	{r0, r1, r2, lr}
 	mrc	15, 0, r3, cr1, cr0, 1
 	bic	r3, r3, #2
diff --git a/arch/arm/cpu/armv7/s5pc1xx/clock.c b/arch/arm/cpu/armv7/s5pc1xx/clock.c
index 98a27e5..da8b2d7 100644
--- a/arch/arm/cpu/armv7/s5pc1xx/clock.c
+++ b/arch/arm/cpu/armv7/s5pc1xx/clock.c
@@ -26,6 +26,8 @@
 #include <asm/io.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/clk.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/armv7.h>
 
 #define CLK_M	0
 #define CLK_D	1
@@ -328,3 +330,13 @@ void s5p_clock_init(void)
 	get_uart_clk = s5pc1xx_get_uart_clk;
 	get_pwm_clk = s5pc1xx_get_pwm_clk;
 }
+
+#ifndef CONFIG_SYS_NO_DCACHE
+void v7_setup_outer_cache_ops(void)
+{
+#ifndef CONFIG_L2_OFF
+	v7_outer_cache.enable = ca8_l2_cache_enable;
+	v7_outer_cache.disable = ca8_l2_cache_disable;
+#endif
+}
+#endif
diff --git a/arch/arm/include/asm/arch-s5pc1xx/sys_proto.h b/arch/arm/include/asm/arch-s5pc1xx/sys_proto.h
index 3078aaf..23144da 100644
--- a/arch/arm/include/asm/arch-s5pc1xx/sys_proto.h
+++ b/arch/arm/include/asm/arch-s5pc1xx/sys_proto.h
@@ -26,7 +26,7 @@
 
 u32 get_device_type(void);
 void invalidate_dcache(u32);
-void l2_cache_disable(void);
-void l2_cache_enable(void);
+void ca8_l2_cache_disable(void);
+void ca8_l2_cache_enable(void);
 
 #endif
-- 
1.7.0.4