diff options
Diffstat (limited to 'bsps/aarch64/shared/mmu')
-rw-r--r-- | bsps/aarch64/shared/mmu/vmsav8-64.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/bsps/aarch64/shared/mmu/vmsav8-64.c b/bsps/aarch64/shared/mmu/vmsav8-64.c index 9caa91c414..c426dec900 100644 --- a/bsps/aarch64/shared/mmu/vmsav8-64.c +++ b/bsps/aarch64/shared/mmu/vmsav8-64.c @@ -47,14 +47,25 @@ 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 tables are being + * modified. + */ + _ISR_Local_disable( level ); - aarch64_mmu_disable(); sc = aarch64_mmu_map_block( (uint64_t *) bsp_translation_table_base, 0x0, addr, size, - 0, + -1, flags ); _AARCH64_Data_synchronization_barrier(); @@ -63,7 +74,8 @@ rtems_status_code aarch64_mmu_map( ); _AARCH64_Data_synchronization_barrier(); _AARCH64_Instruction_synchronization_barrier(); - aarch64_mmu_enable(); + + _ISR_Local_enable( level ); return sc; } |