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| author | Kinsey Moore <kinsey.moore@oarcorp.com> | 2023-02-24 16:25:12 -0600 |
|---|---|---|
| committer | Joel Sherrill <joel@rtems.org> | 2023-02-27 12:31:48 -0600 |
| commit | d08dfc3d63543b0dd2f4a4e26966b22118c207a0 (patch) | |
| tree | 5703b584e4c7cea32cef0747921e373379a50cf2 /bsps/aarch64 | |
| parent | waf: Update to waf 2.0.25 (diff) | |
| download | rtems-d08dfc3d63543b0dd2f4a4e26966b22118c207a0.tar.bz2 | |
bsps/aarch64: Disable interrupts during MMU remap
Interrupts must be disabled during MMU remapping since the majority of
RTEMS including interrupts expects normal memory mapping semantics such
as unaligned accesses.
Diffstat (limited to 'bsps/aarch64')
| -rw-r--r-- | bsps/aarch64/shared/mmu/vmsav8-64.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/bsps/aarch64/shared/mmu/vmsav8-64.c b/bsps/aarch64/shared/mmu/vmsav8-64.c index 190a05f7d5..270b9319ad 100644 --- a/bsps/aarch64/shared/mmu/vmsav8-64.c +++ b/bsps/aarch64/shared/mmu/vmsav8-64.c @@ -47,12 +47,16 @@ rtems_status_code aarch64_mmu_map( ) { rtems_status_code sc; + ISR_Level level; uint64_t max_mappable = 1LLU << aarch64_mmu_get_cpu_pa_bits(); if ( addr >= max_mappable || (addr + size) > max_mappable ) { return RTEMS_INVALID_ADDRESS; } + /* Disable interrupts so they don't run while the MMU is disabled */ + _ISR_Local_disable( level ); + aarch64_mmu_disable(); sc = aarch64_mmu_map_block( (uint64_t *) bsp_translation_table_base, @@ -70,5 +74,7 @@ rtems_status_code aarch64_mmu_map( _AARCH64_Instruction_synchronization_barrier(); aarch64_mmu_enable(); + _ISR_Local_enable( level ); + return sc; } |