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Make RAM regions non-executable

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This commit makes the privileged RAM and stack regions non-executable.

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
This commit is contained in:
Gaurav Aggarwal 2022-09-07 16:04:19 +05:30 committed by Gaurav-Aggarwal-AWS
parent acd9279fc2
commit c4ad77f694
4 changed files with 16 additions and 4 deletions
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5
portable/GCC/ARM_CM3_MPU/port.c
View file

@ -637,6 +637,7 @@ static void prvSetupMPU( void )
portMPU_REGION_ATTRIBUTE_REG = ( portMPU_REGION_PRIVILEGED_READ_WRITE ) |
( portMPU_REGION_CACHEABLE_BUFFERABLE ) |
( portMPU_REGION_EXECUTE_NEVER ) |
prvGetMPURegionSizeSetting( ( uint32_t ) __privileged_data_end__ - ( uint32_t ) __privileged_data_start__ ) |
( portMPU_REGION_ENABLE );
@ -736,6 +737,7 @@ void vPortStoreTaskMPUSettings( xMPU_SETTINGS * xMPUSettings,
xMPUSettings->xRegion[ 0 ].ulRegionAttribute =
( portMPU_REGION_READ_WRITE ) |
( portMPU_REGION_CACHEABLE_BUFFERABLE ) |
( portMPU_REGION_EXECUTE_NEVER ) |
( prvGetMPURegionSizeSetting( ( uint32_t ) __SRAM_segment_end__ - ( uint32_t ) __SRAM_segment_start__ ) ) |
( portMPU_REGION_ENABLE );
@ -761,7 +763,8 @@ void vPortStoreTaskMPUSettings( xMPU_SETTINGS * xMPUSettings,
( portSTACK_REGION ); /* Region number. */
xMPUSettings->xRegion[ 0 ].ulRegionAttribute =
( portMPU_REGION_READ_WRITE ) | /* Read and write. */
( portMPU_REGION_READ_WRITE ) |
( portMPU_REGION_EXECUTE_NEVER ) |
( prvGetMPURegionSizeSetting( ulStackDepth * ( uint32_t ) sizeof( StackType_t ) ) ) |
( portMPU_REGION_CACHEABLE_BUFFERABLE ) |
( portMPU_REGION_ENABLE );

5
portable/GCC/ARM_CM4_MPU/port.c
View file

@ -723,6 +723,7 @@ static void prvSetupMPU( void )
( portPRIVILEGED_RAM_REGION );
portMPU_REGION_ATTRIBUTE_REG = ( portMPU_REGION_PRIVILEGED_READ_WRITE ) |
( portMPU_REGION_EXECUTE_NEVER ) |
( ( configTEX_S_C_B_SRAM & portMPU_RASR_TEX_S_C_B_MASK ) << portMPU_RASR_TEX_S_C_B_LOCATION ) |
prvGetMPURegionSizeSetting( ( uint32_t ) __privileged_data_end__ - ( uint32_t ) __privileged_data_start__ ) |
( portMPU_REGION_ENABLE );
@ -834,6 +835,7 @@ void vPortStoreTaskMPUSettings( xMPU_SETTINGS * xMPUSettings,
xMPUSettings->xRegion[ 0 ].ulRegionAttribute =
( portMPU_REGION_READ_WRITE ) |
( portMPU_REGION_EXECUTE_NEVER ) |
( ( configTEX_S_C_B_SRAM & portMPU_RASR_TEX_S_C_B_MASK ) << portMPU_RASR_TEX_S_C_B_LOCATION ) |
( prvGetMPURegionSizeSetting( ( uint32_t ) __SRAM_segment_end__ - ( uint32_t ) __SRAM_segment_start__ ) ) |
( portMPU_REGION_ENABLE );
@ -860,7 +862,8 @@ void vPortStoreTaskMPUSettings( xMPU_SETTINGS * xMPUSettings,
( portSTACK_REGION ); /* Region number. */
xMPUSettings->xRegion[ 0 ].ulRegionAttribute =
( portMPU_REGION_READ_WRITE ) | /* Read and write. */
( portMPU_REGION_READ_WRITE ) |
( portMPU_REGION_EXECUTE_NEVER ) |
( prvGetMPURegionSizeSetting( ulStackDepth * ( uint32_t ) sizeof( StackType_t ) ) ) |
( ( configTEX_S_C_B_SRAM & portMPU_RASR_TEX_S_C_B_MASK ) << portMPU_RASR_TEX_S_C_B_LOCATION ) |
( portMPU_REGION_ENABLE );

5
portable/IAR/ARM_CM4F_MPU/port.c
View file

@ -562,6 +562,7 @@ static void prvSetupMPU( void )
( portPRIVILEGED_RAM_REGION );
portMPU_REGION_ATTRIBUTE_REG = ( portMPU_REGION_PRIVILEGED_READ_WRITE ) |
( portMPU_REGION_EXECUTE_NEVER ) |
( ( configTEX_S_C_B_SRAM & portMPU_RASR_TEX_S_C_B_MASK ) << portMPU_RASR_TEX_S_C_B_LOCATION ) |
prvGetMPURegionSizeSetting( ( uint32_t ) __privileged_data_end__ - ( uint32_t ) __privileged_data_start__ ) |
( portMPU_REGION_ENABLE );
@ -631,6 +632,7 @@ void vPortStoreTaskMPUSettings( xMPU_SETTINGS * xMPUSettings,
xMPUSettings->xRegion[ 0 ].ulRegionAttribute =
( portMPU_REGION_READ_WRITE ) |
( portMPU_REGION_EXECUTE_NEVER ) |
( ( configTEX_S_C_B_SRAM & portMPU_RASR_TEX_S_C_B_MASK ) << portMPU_RASR_TEX_S_C_B_LOCATION ) |
( prvGetMPURegionSizeSetting( ( uint32_t ) __SRAM_segment_end__ - ( uint32_t ) __SRAM_segment_start__ ) ) |
( portMPU_REGION_ENABLE );
@ -657,7 +659,8 @@ void vPortStoreTaskMPUSettings( xMPU_SETTINGS * xMPUSettings,
( portSTACK_REGION ); /* Region number. */
xMPUSettings->xRegion[ 0 ].ulRegionAttribute =
( portMPU_REGION_READ_WRITE ) | /* Read and write. */
( portMPU_REGION_READ_WRITE ) |
( portMPU_REGION_EXECUTE_NEVER ) |
( prvGetMPURegionSizeSetting( ulStackDepth * ( uint32_t ) sizeof( StackType_t ) ) ) |
( ( configTEX_S_C_B_SRAM & portMPU_RASR_TEX_S_C_B_MASK ) << portMPU_RASR_TEX_S_C_B_LOCATION ) |
( portMPU_REGION_ENABLE );

5
portable/RVDS/ARM_CM4_MPU/port.c
View file

@ -726,6 +726,7 @@ static void prvSetupMPU( void )
( portPRIVILEGED_RAM_REGION );
portMPU_REGION_ATTRIBUTE_REG = ( portMPU_REGION_PRIVILEGED_READ_WRITE ) |
( portMPU_REGION_EXECUTE_NEVER ) |
( ( configTEX_S_C_B_SRAM & portMPU_RASR_TEX_S_C_B_MASK ) << portMPU_RASR_TEX_S_C_B_LOCATION ) |
prvGetMPURegionSizeSetting( ( uint32_t ) __privileged_data_end__ - ( uint32_t ) __privileged_data_start__ ) |
( portMPU_REGION_ENABLE );
@ -825,6 +826,7 @@ void vPortStoreTaskMPUSettings( xMPU_SETTINGS * xMPUSettings,
xMPUSettings->xRegion[ 0 ].ulRegionAttribute =
( portMPU_REGION_READ_WRITE ) |
( portMPU_REGION_EXECUTE_NEVER ) |
( ( configTEX_S_C_B_SRAM & portMPU_RASR_TEX_S_C_B_MASK ) << portMPU_RASR_TEX_S_C_B_LOCATION ) |
( prvGetMPURegionSizeSetting( ( uint32_t ) __SRAM_segment_end__ - ( uint32_t ) __SRAM_segment_start__ ) ) |
( portMPU_REGION_ENABLE );
@ -851,7 +853,8 @@ void vPortStoreTaskMPUSettings( xMPU_SETTINGS * xMPUSettings,
( portSTACK_REGION ); /* Region number. */
xMPUSettings->xRegion[ 0 ].ulRegionAttribute =
( portMPU_REGION_READ_WRITE ) | /* Read and write. */
( portMPU_REGION_READ_WRITE ) |
( portMPU_REGION_EXECUTE_NEVER ) |
( prvGetMPURegionSizeSetting( ulStackDepth * ( uint32_t ) sizeof( StackType_t ) ) ) |
( ( configTEX_S_C_B_SRAM & portMPU_RASR_TEX_S_C_B_MASK ) << portMPU_RASR_TEX_S_C_B_LOCATION ) |
( portMPU_REGION_ENABLE );