blob: f7d2eca157c4cc5d25b19063349102634bd0e01d (
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
44
45
46
|
/**
* @file
*
* @ingroup mpc55xx
*
* @brief BSP Get Work Area of Memory.
*/
/*
* Copyright (c) 2008
* Embedded Brains GmbH
* Obere Lagerstr. 30
* D-82178 Puchheim
* Germany
* rtems@embedded-brains.de
*
* 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.
*/
#include <bsp.h>
#include <bsp/bootcard.h>
#include <libcpu/powerpc-utility.h>
#define MPC55XX_INTERRUPT_STACK_SIZE 0x1000
/* Symbols defined in linker command file */
LINKER_SYMBOL(bsp_workspace_start);
LINKER_SYMBOL(bsp_workspace_end);
LINKER_SYMBOL(bsp_external_ram_end);
void bsp_get_work_area(
void **work_area_start,
uintptr_t *work_area_size,
void **heap_start,
uintptr_t *heap_size
)
{
size_t free_ram_size;
*work_area_start = bsp_workspace_start;
free_ram_size = (uint8_t *)bsp_external_ram_end - (uint8_t *)*work_area_start;
*work_area_size = (free_ram_size / 2);
*heap_start = (void *)((uint8_t *)*work_area_start + *work_area_size);
*heap_size = (free_ram_size / 2);
}
|
