diff options
Diffstat (limited to 'arch/csky/kernel/head.S')
| -rw-r--r-- | arch/csky/kernel/head.S | 60 |
1 files changed, 7 insertions, 53 deletions
diff --git a/arch/csky/kernel/head.S b/arch/csky/kernel/head.S index 9c4ec473b76b..61989f9241c0 100644 --- a/arch/csky/kernel/head.S +++ b/arch/csky/kernel/head.S @@ -7,16 +7,11 @@ __HEAD ENTRY(_start) - /* set super user mode */ - lrw a3, DEFAULT_PSR_VALUE - mtcr a3, psr - psrset ee - - SETUP_MMU a3 + SETUP_MMU /* set stack point */ - lrw a3, init_thread_union + THREAD_SIZE - mov sp, a3 + lrw r6, init_thread_union + THREAD_SIZE + mov sp, r6 jmpi csky_start END(_start) @@ -24,53 +19,12 @@ END(_start) #ifdef CONFIG_SMP .align 10 ENTRY(_start_smp_secondary) - /* Invalid I/Dcache BTB BHT */ - movi a3, 7 - lsli a3, 16 - addi a3, (1<<4) | 3 - mtcr a3, cr17 - - tlbi.alls - - /* setup PAGEMASK */ - movi a3, 0 - mtcr a3, cr<6, 15> - - /* setup MEL0/MEL1 */ - grs a0, _start_smp_pc -_start_smp_pc: - bmaski a1, 13 - andn a0, a1 - movi a1, 0x00000006 - movi a2, 0x00001006 - or a1, a0 - or a2, a0 - mtcr a1, cr<2, 15> - mtcr a2, cr<3, 15> - - /* setup MEH */ - mtcr a0, cr<4, 15> - - /* write TLB */ - bgeni a3, 28 - mtcr a3, cr<8, 15> - - SETUP_MMU a3 - - /* enable MMU */ - movi a3, 1 - mtcr a3, cr18 - - jmpi _goto_mmu_on -_goto_mmu_on: - lrw a3, DEFAULT_PSR_VALUE - mtcr a3, psr - psrset ee + SETUP_MMU /* set stack point */ - lrw a3, secondary_stack - ld.w a3, (a3, 0) - mov sp, a3 + lrw r6, secondary_stack + ld.w r6, (r6, 0) + mov sp, r6 jmpi csky_start_secondary END(_start_smp_secondary) |