diff options
| author | Tian Ye <tianye@sugon.com> | 2023-10-18 09:21:56 -0500 |
|---|---|---|
| committer | Joel Sherrill <joel@rtems.org> | 2023-10-18 10:14:42 -0500 |
| commit | a738d69bcf97d5a6fd88c1665380cfb381f05b1f (patch) | |
| tree | 33f700e60110b4ce54d254e27ecf0a855220dbdb | |
| parent | e7cb79c39d8dbc02ded1d6d9c37ee00323508bf3 (diff) | |
bsps/aarch64: Disable use of TTBR1
Force use of addresses that would be translated by TTBR1 to cause a
translation fault. RTEMS on AArch64 does not use TTBR1 and so attempted
translation of that address range could cause unexpected behavior in the
form of other exception types since TTBR1 is never set.
| -rw-r--r-- | bsps/aarch64/include/bsp/aarch64-mmu.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/bsps/aarch64/include/bsp/aarch64-mmu.h b/bsps/aarch64/include/bsp/aarch64-mmu.h index 2101ef4ae0..8c69705230 100644 --- a/bsps/aarch64/include/bsp/aarch64-mmu.h +++ b/bsps/aarch64/include/bsp/aarch64-mmu.h @@ -439,7 +439,8 @@ BSP_START_TEXT_SECTION static inline void aarch64_mmu_setup( void ) _AArch64_Write_tcr_el1( AARCH64_TCR_EL1_T0SZ( 0x10 ) | AARCH64_TCR_EL1_IRGN0( 0x1 ) | AARCH64_TCR_EL1_ORGN0( 0x1 ) | AARCH64_TCR_EL1_SH0( 0x3 ) | - AARCH64_TCR_EL1_TG0( 0x0 ) | AARCH64_TCR_EL1_IPS( 0x5ULL ) + AARCH64_TCR_EL1_TG0( 0x0 ) | AARCH64_TCR_EL1_IPS( 0x5ULL ) | + AARCH64_TCR_EL1_EPD1 ); /* Set MAIR */ |