[U-Boot] Fwd: [PATCH 1/3] armv8/cache: Consolidate setting for MAIR and TCR

[York Sun]

-------- Original Message --------
Subject: [PATCH 1/3] armv8/cache: Consolidate setting for MAIR and TCR
Date: Mon, 10 Feb 2014 13:55:52 -0800
From: York Sun <yorksun at freescale.com>
To: <albert.u.boot at aribaud.net>
CC: <scottwood at freescale.com>, York Sun <yorksun at freescale.com>, David Feng
<fenghua at phytium.com.cn>

Move setting for MAIR and TCR to cache_v8.c, to avoid conflict with
sub-architecture.

Signed-off-by: York Sun <yorksun at freescale.com>
CC: David Feng <fenghua at phytium.com.cn>
---
 arch/arm/cpu/armv8/cache_v8.c |   22 +++++++++++++++++++---
 arch/arm/cpu/armv8/start.S    |   22 ----------------------
 2 files changed, 19 insertions(+), 25 deletions(-)

diff --git a/arch/arm/cpu/armv8/cache_v8.c b/arch/arm/cpu/armv8/cache_v8.c
index 131fdab..7acae1b 100644
--- a/arch/arm/cpu/armv8/cache_v8.c
+++ b/arch/arm/cpu/armv8/cache_v8.c
@@ -45,15 +45,31 @@ static void mmu_setup(void)

 	/* load TTBR0 */
 	el = current_el();
-	if (el == 1)
+	if (el == 1) {
 		asm volatile("msr ttbr0_el1, %0"
 			     : : "r" (gd->arch.tlb_addr) : "memory");
-	else if (el == 2)
+		asm volatile("msr tcr_el1, %0"
+			     : : "r" (TCR_FLAGS | TCR_EL1_IPS_BITS)
+			     : "memory");
+		asm volatile("msr mair_el1, %0"
+			     : : "r" (MEMORY_ATTRIBUTES) : "memory");
+	} else if (el == 2) {
 		asm volatile("msr ttbr0_el2, %0"
 			     : : "r" (gd->arch.tlb_addr) : "memory");
-	else
+		asm volatile("msr tcr_el2, %0"
+			     : : "r" (TCR_FLAGS | TCR_EL2_IPS_BITS)
+			     : "memory");
+		asm volatile("msr mair_el2, %0"
+			     : : "r" (MEMORY_ATTRIBUTES) : "memory");
+	} else {
 		asm volatile("msr ttbr0_el3, %0"
 			     : : "r" (gd->arch.tlb_addr) : "memory");
+		asm volatile("msr tcr_el3, %0"
+			     : : "r" (TCR_FLAGS | TCR_EL2_IPS_BITS)
+			     : "memory");
+		asm volatile("msr mair_el3, %0"
+			     : : "r" (MEMORY_ATTRIBUTES) : "memory");
+	}

 	/* enable the mmu */
 	set_sctlr(get_sctlr() | CR_M);
diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S
index bcc2603..90daa4d 100644
--- a/arch/arm/cpu/armv8/start.S
+++ b/arch/arm/cpu/armv8/start.S
@@ -128,28 +128,6 @@ ENTRY(c_runtime_cpu_setup)
 	isb	sy
 #endif

-#ifndef CONFIG_SYS_DCACHE_OFF
-	/*
-	 * Setup MAIR and TCR.
-	 */
-	ldr	x0, =MEMORY_ATTRIBUTES
-	ldr	x1, =TCR_FLAGS
-
-	switch_el x2, 3f, 2f, 1f
-3:	orr	x1, x1, TCR_EL3_IPS_BITS
-	msr	mair_el3, x0
-	msr	tcr_el3, x1
-	b	0f
-2:	orr	x1, x1, TCR_EL2_IPS_BITS
-	msr	mair_el2, x0
-	msr	tcr_el2, x1
-	b	0f
-1:	orr	x1, x1, TCR_EL1_IPS_BITS
-	msr	mair_el1, x0
-	msr	tcr_el1, x1
-0:
-#endif
-
 	/* Relocate vBAR */
 	adr	x0, vectors
 	switch_el x1, 3f, 2f, 1f
-- 
1.7.9.5