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arm/raspberrypi: Fix linker map

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Add NULL-pointer protection.  Make MMU table read-only.  Move vector
table to start section.

Close #3774.
This commit is contained in:
Sebastian Huber
2019-07-29 07:22:03 +02:00
parent 036717eda4
commit c5fd79cd47
2 changed files with 9 additions and 27 deletions
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2
bsps/arm/raspberrypi/start/bspstarthooks.c
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@@ -87,7 +87,7 @@ void BSP_START_TEXT_SECTION bsp_start_hook_0(void)
arm_cp15_set_translation_table_base_control_register(0);
/* Clear Secure or Non-secure Vector Base Address Register */
arm_cp15_set_vector_base_address(0);
arm_cp15_set_vector_base_address(bsp_vector_table_begin);
#ifdef RTEMS_SMP
if (cpu_index_self == 0) {

34
bsps/arm/raspberrypi/start/linkcmds
View File

@@ -14,35 +14,13 @@
* @brief Raspberry Pi memory map.
*/
/**
* <table>
* <tr><th>Region Name</th><th>Region Begin</th><th>Region Size</th></tr>
* <tr><td>VECTOR_RAM</td><td>0x08000000</td><td>8k</td></tr>
* <tr><td>RAM</td><td>0x80008000</td><td>128M</td></tr>
* </table>
*
* <table>
* <tr><th>Section Name</th><th>Section Runtime Region</th><th>Section Load Region</th></tr>
* <tr><td>.start</td><td>RAM</td><td></td></tr>
* <tr><td>.vector</td><td>VECTOR_RAM</td><td></td></tr>
* <tr><td>.text</td><td>RAM</td><td>RAM_EXT</td></tr>
* <tr><td>.rodata</td><td>RAM</td><td>RAM_EXT</td></tr>
* <tr><td>.data</td><td>RAM</td><td>RAM_EXT</td></tr>
* <tr><td>.fast</td><td>RAM</td><td>RAM_EXT</td></tr>
* <tr><td>.bss</td><td>RAM</td><td></td></tr>
* <tr><td>.work</td><td>RAM</td><td></td></tr>
* <tr><td>.stack</td><td>RAM</td><td></td></tr>
* </table>
*/
MEMORY {
VECTOR_RAM (AIW) : ORIGIN = 0x0 , LENGTH = 16k
RAM_MMU (AIW) : ORIGIN = 0x00004000, LENGTH = 16k
RAM (AIW) : ORIGIN = 0x00008000, LENGTH = 128M - 32k
RAM_MMU (AIW) : ORIGIN = 0x00100000, LENGTH = 16k
RAM (AIW) : ORIGIN = 0x00200000, LENGTH = 128M - 2M
}
REGION_ALIAS ("REGION_START", RAM);
REGION_ALIAS ("REGION_VECTOR", VECTOR_RAM);
REGION_ALIAS ("REGION_VECTOR", RAM);
REGION_ALIAS ("REGION_TEXT", RAM);
REGION_ALIAS ("REGION_TEXT_LOAD", RAM);
REGION_ALIAS ("REGION_RODATA", RAM);
@@ -61,7 +39,11 @@ REGION_ALIAS ("REGION_NOCACHE_LOAD", RAM);
bsp_stack_abt_size = DEFINED (bsp_stack_abt_size) ? bsp_stack_abt_size : 1024;
bsp_section_robarrier_align = DEFINED (bsp_section_robarrier_align) ? bsp_section_robarrier_align : 1M;
bsp_section_rwbarrier_align = DEFINED (bsp_section_rwbarrier_align) ? bsp_section_rwbarrier_align : 1M;
bsp_vector_table_in_start_section = 1;
bsp_translation_table_base = ORIGIN (RAM_MMU);
bsp_translation_table_end = ORIGIN (RAM_MMU) + LENGTH (RAM_MMU);
INCLUDE linkcmds.armv4