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| author | Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> | 2014-05-17 19:18:58 +0300 |
|---|---|---|
| committer | Stafford Horne <shorne@gmail.com> | 2017-02-06 21:50:43 +0900 |
| commit | 8c9b7db0de3d64c9a6fcd12622636d4aa6a8c30c (patch) | |
| tree | 2b764ae08bee406a851d79776c50b997e464c6dc | |
| parent | c2dc72437a5504bf8f4343ed83ae745afa388522 (diff) | |
openrisc: head: refactor out tlb flush into it's own function
This brings it inline with the other setup oprations done like the cache
enables _ic_enable and _dc_enable. Also, this is going to make it
easier to initialize additional cpu's when smp is introduced.
Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
[shorne@gmail.com: Added commit body]
Signed-off-by: Stafford Horne <shorne@gmail.com>
| -rw-r--r-- | arch/openrisc/kernel/head.S | 38 |
1 files changed, 22 insertions, 16 deletions
diff --git a/arch/openrisc/kernel/head.S b/arch/openrisc/kernel/head.S index 63ba2d96a860..a22f1fc40a6c 100644 --- a/arch/openrisc/kernel/head.S +++ b/arch/openrisc/kernel/head.S @@ -522,22 +522,8 @@ enable_dc: l.nop flush_tlb: - /* - * I N V A L I D A T E T L B e n t r i e s - */ - LOAD_SYMBOL_2_GPR(r5,SPR_DTLBMR_BASE(0)) - LOAD_SYMBOL_2_GPR(r6,SPR_ITLBMR_BASE(0)) - l.addi r7,r0,128 /* Maximum number of sets */ -1: - l.mtspr r5,r0,0x0 - l.mtspr r6,r0,0x0 - - l.addi r5,r5,1 - l.addi r6,r6,1 - l.sfeq r7,r0 - l.bnf 1b - l.addi r7,r7,-1 - + l.jal _flush_tlb + l.nop /* The MMU needs to be enabled before or32_early_setup is called */ @@ -629,6 +615,26 @@ jump_start_kernel: l.jr r30 l.nop +_flush_tlb: + /* + * I N V A L I D A T E T L B e n t r i e s + */ + LOAD_SYMBOL_2_GPR(r5,SPR_DTLBMR_BASE(0)) + LOAD_SYMBOL_2_GPR(r6,SPR_ITLBMR_BASE(0)) + l.addi r7,r0,128 /* Maximum number of sets */ +1: + l.mtspr r5,r0,0x0 + l.mtspr r6,r0,0x0 + + l.addi r5,r5,1 + l.addi r6,r6,1 + l.sfeq r7,r0 + l.bnf 1b + l.addi r7,r7,-1 + + l.jr r9 + l.nop + /* ========================================[ cache ]=== */ /* aligment here so we don't change memory offsets with |