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authorYork Sun <yorksun@freescale.com>2014-02-26 13:26:02 -0800
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2014-04-07 17:43:32 +0200
commitf5222cfd49bd3681008039e82aa7a1db3e6c9af4 (patch)
treef7f81d3f14300d54b4f12125a56b8ce7f17339d4
parent2c67e0e7cfa750b006725d3a42f42d3926979b90 (diff)
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armv8/cache: Consolidate setting for MAIR and TCR
Move setting for MAIR and TCR to cache_v8.c, to avoid conflict with sub-architecture. Signed-off-by: York Sun <yorksun@freescale.com> CC: David Feng <fenghua@phytium.com.cn>
-rw-r--r--arch/arm/cpu/armv8/cache_v8.c22
-rw-r--r--arch/arm/cpu/armv8/start.S22
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