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bsp/atsam: Add nocache region support

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This commit is contained in:
Sebastian Huber
2016-03-22 08:34:16 +01:00
parent 935e9c7dfc
commit 0bd49f1535
6 changed files with 11 additions and 4 deletions
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1
c/src/lib/libbsp/arm/atsam/libraries/libboard/source/board_lowlevel.c
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@@ -40,6 +40,7 @@
#ifndef __rtems__
#include "board.h"
#else /* __rtems__ */
#define MPU_HAS_NOCACHE_REGION
#include <chip.h>
#include <include/board_lowlevel.h>
#endif /* __rtems__ */

5
c/src/lib/libbsp/arm/atsam/startup/bspstart.c
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@@ -16,6 +16,7 @@
#include <bsp/bootcard.h>
#include <bsp/irq.h>
#include <bsp/irq-generic.h>
#include <bsp/linker-symbols.h>
#include <chip.h>
@@ -29,4 +30,8 @@ void bsp_start(void)
bsp_interrupt_initialize();
SCB_CleanDCache();
SCB_InvalidateICache();
rtems_cache_coherent_add_area(
bsp_section_nocacheheap_begin,
(uintptr_t) bsp_section_nocacheheap_size
);
}

2
c/src/lib/libbsp/arm/atsam/startup/linkcmds
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@@ -15,7 +15,7 @@ REGION_ALIAS ("REGION_FAST_DATA_LOAD", INTFLASH);
REGION_ALIAS ("REGION_BSS", INTSRAM);
REGION_ALIAS ("REGION_WORK", INTSRAM);
REGION_ALIAS ("REGION_STACK", INTSRAM);
REGION_ALIAS ("REGION_NOCACHE", INTSRAM);
REGION_ALIAS ("REGION_NOCACHE", NOCACHE);
REGION_ALIAS ("REGION_NOCACHE_LOAD", INTFLASH);
INCLUDE linkcmds.armv7m

2
c/src/lib/libbsp/arm/atsam/startup/linkcmds.intsram
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@@ -17,7 +17,7 @@ REGION_ALIAS ("REGION_FAST_DATA_LOAD", INTSRAM);
REGION_ALIAS ("REGION_BSS", INTSRAM);
REGION_ALIAS ("REGION_WORK", INTSRAM);
REGION_ALIAS ("REGION_STACK", INTSRAM);
REGION_ALIAS ("REGION_NOCACHE", INTSRAM);
REGION_ALIAS ("REGION_NOCACHE", NOCACHE);
REGION_ALIAS ("REGION_NOCACHE_LOAD", INTSRAM);
INCLUDE linkcmds.armv7m

3
c/src/lib/libbsp/arm/atsam/startup/linkcmds.memory.in
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@@ -2,6 +2,7 @@ MEMORY {
ITCM : ORIGIN = 0x00000000, LENGTH = @ATSAM_MEMORY_TCM_SIZE@
INTFLASH : ORIGIN = 0x00400000, LENGTH = @ATSAM_MEMORY_INTFLASH_SIZE@
DTCM : ORIGIN = 0x20000000, LENGTH = @ATSAM_MEMORY_TCM_SIZE@
INTSRAM : ORIGIN = 0x20400000, LENGTH = @ATSAM_MEMORY_INTSRAM_SIZE@ - 2 * @ATSAM_MEMORY_TCM_SIZE@
INTSRAM : ORIGIN = 0x20400000, LENGTH = @ATSAM_MEMORY_INTSRAM_SIZE@ - 2 * @ATSAM_MEMORY_TCM_SIZE@ - 4K
NOCACHE : ORIGIN = 0x20400000 + @ATSAM_MEMORY_INTSRAM_SIZE@ - 2 * @ATSAM_MEMORY_TCM_SIZE@ - 4K, LENGTH = 4K
SDRAM : ORIGIN = 0x70000000, LENGTH = @ATSAM_MEMORY_SDRAM_SIZE@
}

2
c/src/lib/libbsp/arm/atsam/startup/linkcmds.sdram
View File

@@ -15,7 +15,7 @@ REGION_ALIAS ("REGION_FAST_DATA_LOAD", SDRAM);
REGION_ALIAS ("REGION_BSS", SDRAM);
REGION_ALIAS ("REGION_WORK", SDRAM);
REGION_ALIAS ("REGION_STACK", SDRAM);
REGION_ALIAS ("REGION_NOCACHE", SDRAM);
REGION_ALIAS ("REGION_NOCACHE", NOCACHE);
REGION_ALIAS ("REGION_NOCACHE_LOAD", SDRAM);
INCLUDE linkcmds.armv7m