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target-microblaze: Bypass MMU with MMU_NOMMU_IDX 

Bypass MMU translation when mmu-index MMU_NOMMU_IDX is used.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
This commit is contained in:
Edgar E. Iglesias 2018-04-13 22:16:57 +02:00
parent 9e50a927b4
commit a2de5ca451
1 changed files with 2 additions and 1 deletions
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3
target/microblaze/helper.c
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@ -58,7 +58,8 @@ int mb_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size, int rw,
int prot;
/* Translate if the MMU is available and enabled. */
if (cpu->cfg.use_mmu && (env->sregs[SR_MSR] & MSR_VM)) {
if (cpu->cfg.use_mmu && (env->sregs[SR_MSR] & MSR_VM)
&& mmu_idx != MMU_NOMMU_IDX) {
uint32_t vaddr, paddr;
struct microblaze_mmu_lookup lu;