diff options
| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2008-09-12 20:25:38 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2008-09-12 20:25:38 +0000 |
| commit | 02694aae95d83faadfc504ba23206d6c1f2a8361 (patch) | |
| tree | d6707049edcc1e9367115aae88b6f4b61e80deb7 /c/src/lib/libbsp/arm | |
| parent | 2008-09-12 Joel Sherrill <joel.sherrill@oarcorp.com> (diff) | |
| download | rtems-02694aae95d83faadfc504ba23206d6c1f2a8361.tar.bz2 | |
2008-09-12 Joel Sherrill <joel.sherrill@oarcorp.com>
* shared/bspgetworkarea.c: New file.
Diffstat (limited to 'c/src/lib/libbsp/arm')
| -rw-r--r-- | c/src/lib/libbsp/arm/ChangeLog | 4 | ||||
| -rw-r--r-- | c/src/lib/libbsp/arm/shared/bspgetworkarea.c | 43 |
2 files changed, 47 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/ChangeLog b/c/src/lib/libbsp/arm/ChangeLog index 04d1109e6e..5365ac1492 100644 --- a/c/src/lib/libbsp/arm/ChangeLog +++ b/c/src/lib/libbsp/arm/ChangeLog @@ -1,3 +1,7 @@ +2008-09-12 Joel Sherrill <joel.sherrill@oarcorp.com> + + * shared/bspgetworkarea.c: New file. + 2008-08-18 Ralf Corsépius <ralf.corsepius@rtems.org> * shared/irq/irq_init.c: Add missing prototypes. diff --git a/c/src/lib/libbsp/arm/shared/bspgetworkarea.c b/c/src/lib/libbsp/arm/shared/bspgetworkarea.c new file mode 100644 index 0000000000..d8f4be7095 --- /dev/null +++ b/c/src/lib/libbsp/arm/shared/bspgetworkarea.c @@ -0,0 +1,43 @@ +/* + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#include <bsp.h> +#include <bsp/bootcard.h> +#include <stdint.h> + +extern void *_sdram_size; +extern void *_sdram_base; +extern void *_bss_free_start; + +/* + * This method returns the base address and size of the area which + * is to be allocated between the RTEMS Workspace and the C Program + * Heap. + */ +void bsp_get_work_area( + void **work_area_start, + size_t *work_area_size, + void **heap_start, + size_t *heap_size +) +{ + uintptr_t size; + + /* + * Old code had hard-coded heap size of 0x20000 and a comment indicating + * something about the undefined symbol MEM_NOCACHE_SIZE. + */ + size = (uintptr_t)&_sdram_base + (uintptr_t)&_sdram_size + - (uintptr_t)&_bss_free_start; + + *work_area_start = (void *)&_bss_free_start; + *work_area_size = size; + *heap_start = BSP_BOOTCARD_HEAP_USES_WORK_AREA; + *heap_size = BSP_BOOTCARD_HEAP_SIZE_DEFAULT; +} + |