ARM: implement erratum 716044 workaround

[u-boot] / arch / arm / cpu / armv7 / start.S

diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S
index 30f02d3943570c523ea7830ad6b4d8d1810f15f5..c0e184994abd729c3422750023620229956f3db3 100644 (file)
--- a/arch/arm/cpu/armv7/start.S
+++ b/arch/arm/cpu/armv7/start.S
@@ -96,7 +96,7 @@ _image_copy_end_ofs:
 
 .globl _bss_end_ofs
 _bss_end_ofs:
-       .word __bss_end__ - _start
+       .word __bss_end - _start
 
 .globl _end_ofs
 _end_ofs:
@@ -310,6 +310,12 @@ ENTRY(cpu_init_cp15)
 #endif
        mcr     p15, 0, r0, c1, c0, 0
 
+#ifdef CONFIG_ARM_ERRATA_716044
+       mrc     p15, 0, r0, c1, c0, 0   @ read system control register
+       orr     r0, r0, #1 << 11        @ set bit #11
+       mcr     p15, 0, r0, c1, c0, 0   @ write system control register
+#endif
+
 #ifdef CONFIG_ARM_ERRATA_742230
        mrc     p15, 0, r0, c15, c0, 1  @ read diagnostic register
        orr     r0, r0, #1 << 4         @ set bit #4