diff options
Diffstat (limited to 'arch/arm/kernel/head.S')
| -rw-r--r-- | arch/arm/kernel/head.S | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index 14e277d..6d57911 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -99,6 +99,14 @@ ENTRY(stext) THUMB( it eq ) @ force fixup-able long branch encoding beq __error_p @ yes, error 'p' +#ifdef CONFIG_ARM_LPAE + mrc p15, 0, r3, c0, c1, 4 @ read ID_MMFR0 + and r3, r3, #0xf @ extract VMSA support + cmp r3, #5 @ long-descriptor translation table format? + THUMB( it lo ) @ force fixup-able long branch encoding + blo __error_p @ only classic page table format +#endif + #ifndef CONFIG_XIP_KERNEL adr r3, 2f ldmia r3, {r4, r8} |