nommu: Fix compressed/head.S to not perform MMU specific operations

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index bd60e8369879..fa6fbf45cf3b 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -438,6 +438,7 @@ ENDPROC(__setup_mmu)
 
 __armv4_mmu_cache_on:
                 mov     r12, lr
+#ifdef CONFIG_MMU
                 bl      __setup_mmu
                 mov     r0, #0
                 mcr     p15, 0, r0, c7, c10, 4  @ drain write buffer
@@ -451,10 +452,12 @@ __armv4_mmu_cache_on:
                 bl      __common_mmu_cache_on
                 mov     r0, #0
                 mcr     p15, 0, r0, c8, c7, 0   @ flush I,D TLBs
+#endif
                 mov     pc, r12
 
 __armv7_mmu_cache_on:
                 mov     r12, lr
+#ifdef CONFIG_MMU
                 mrc     p15, 0, r11, c0, c1, 4  @ read ID_MMFR0
                 tst     r11, #0xf               @ VMSA
                 blne    __setup_mmu
@@ -462,9 +465,11 @@ __armv7_mmu_cache_on:
                 mcr     p15, 0, r0, c7, c10, 4  @ drain write buffer
                 tst     r11, #0xf               @ VMSA
                 mcrne   p15, 0, r0, c8, c7, 0   @ flush I,D TLBs
+#endif
                 mrc     p15, 0, r0, c1, c0, 0   @ read control reg
                 orr     r0, r0, #0x5000         @ I-cache enable, RR cache replacement
                 orr     r0, r0, #0x003c         @ write buffer
+#ifdef CONFIG_MMU
 #ifdef CONFIG_CPU_ENDIAN_BE8
                 orr     r0, r0, #1 << 25        @ big-endian page tables
 #endif
@@ -472,6 +477,7 @@ __armv7_mmu_cache_on:
                 movne   r1, #-1
                 mcrne   p15, 0, r3, c2, c0, 0   @ load page table pointer
                 mcrne   p15, 0, r1, c3, c0, 0   @ load domain access control
+#endif
                 mcr     p15, 0, r0, c1, c0, 0   @ load control register
                 mrc     p15, 0, r0, c1, c0, 0   @ and read it back
                 mov     r0, #0
@@ -785,22 +791,30 @@ __armv3_mpu_cache_off:
                 mov     pc, lr
 
 __armv4_mmu_cache_off:
+#ifdef CONFIG_MMU
                 mrc     p15, 0, r0, c1, c0
                 bic     r0, r0, #0x000d
                 mcr     p15, 0, r0, c1, c0      @ turn MMU and cache off
                 mov     r0, #0
                 mcr     p15, 0, r0, c7, c7      @ invalidate whole cache v4
                 mcr     p15, 0, r0, c8, c7      @ invalidate whole TLB v4
+#endif
                 mov     pc, lr
 
 __armv7_mmu_cache_off:
                 mrc     p15, 0, r0, c1, c0
+#ifdef CONFIG_MMU
                 bic     r0, r0, #0x000d
+#else
+                bic     r0, r0, #0x000c
+#endif
                 mcr     p15, 0, r0, c1, c0      @ turn MMU and cache off
                 mov     r12, lr
                 bl      __armv7_mmu_cache_flush
                 mov     r0, #0
+#ifdef CONFIG_MMU
                 mcr     p15, 0, r0, c8, c7, 0   @ invalidate whole TLB
+#endif
                 mcr     p15, 0, r0, c7, c5, 6   @ invalidate BTC
                 mcr     p15, 0, r0, c7, c10, 4  @ DSB
                 mcr     p15, 0, r0, c7, c5, 4   @ ISB