blob: d8f4be709582a9a276a5aea2483788977a892a7a (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
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;
}
|
