1 files changed, 16 insertions, 6 deletions

diff --git a/arch/mips/include/asm/mach-malta/kernel-entry-init.h b/arch/mips/include/asm/mach-malta/kernel-entry-init.h
index 77eeda77e73c..0cf8622db27f 100644
--- a/arch/mips/include/asm/mach-malta/kernel-entry-init.h
+++ b/arch/mips/include/asm/mach-malta/kernel-entry-init.h
@@ -10,14 +10,15 @@
 #ifndef __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H
 #define __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H
 
+#include <asm/regdef.h>
+#include <asm/mipsregs.h>
+
         /*
          * Prepare segments for EVA boot:
          *
          * This is in case the processor boots in legacy configuration
          * (SI_EVAReset is de-asserted and CONFIG5.K == 0)
          *
-         * On entry, t1 is loaded with CP0_CONFIG
-         *
          * ========================= Mappings =============================
          * Virtual memory           Physical memory           Mapping
          * 0x00000000 - 0x7fffffff  0x80000000 - 0xfffffffff   MUSUK (kuseg)
@@ -30,12 +31,20 @@
          *
          *
          * Lowmem is expanded to 2GB
+         *
+         * The following code uses the t0, t1, t2 and ra registers without
+         * previously preserving them.
+         *
          */
-        .macro  eva_entry
+        .macro  platform_eva_init
+
+        .set    push
+        .set    reorder
         /*
          * Get Config.K0 value and use it to program
          * the segmentation registers
          */
+        mfc0    t1, CP0_CONFIG
         andi    t1, 0x7 /* CCA */
         move    t2, t1
         ins     t2, t1, 16, 3
@@ -77,6 +86,8 @@
         mtc0    t0, $16, 5
         sync
         jal     mips_ihb
+
+        .set    pop
         .endm
 
         .macro  kernel_entry_setup
@@ -95,7 +106,7 @@
         sll     t0, t0, 6   /* SC bit */
         bgez    t0, 9f
 
-        eva_entry
+        platform_eva_init
         b       0f
 9:
         /* Assume we came from YAMON... */
@@ -127,8 +138,7 @@ nonsc_processor:
 #ifdef CONFIG_EVA
         sync
         ehb
-        mfc0    t1, CP0_CONFIG
-        eva_entry
+        platform_eva_init
 #endif
         .endm