4.104.115
Last change
on this file since 7a2125c was
7a2125c,
checked in by Joel Sherrill <joel.sherrill@…>, on 09/19/08 at 20:41:36
|
2008-09-19 Joel Sherrill <joel.sherrill@…>
- shared/start/start.S, shared/startup/bspgetworkarea.c,
shared/startup/bspstart.c, shared/startup/linkcmds: Modifications
which reflect those tested on psim. Hopefully they work on all
boards. The initialization stack is explicitly declared in the
linkcmds memory layout rather than magic math.
|
-
Property mode set to
100644
|
File size:
1.4 KB
|
Rev | Line | |
---|
[db77b92] | 1 | /* |
---|
| 2 | * The license and distribution terms for this file may be |
---|
| 3 | * found in the file LICENSE in this distribution or at |
---|
| 4 | * http://www.rtems.com/license/LICENSE. |
---|
| 5 | * |
---|
| 6 | * $Id$ |
---|
| 7 | */ |
---|
| 8 | |
---|
| 9 | #include <bsp.h> |
---|
| 10 | #include <bsp/bootcard.h> |
---|
| 11 | #include <stdint.h> |
---|
| 12 | |
---|
| 13 | extern void *__rtems_end; |
---|
| 14 | extern uint32_t _bsp_sbrk_init(uint32_t, uint32_t*); |
---|
| 15 | |
---|
| 16 | /* |
---|
| 17 | * This method returns the base address and size of the area which |
---|
| 18 | * is to be allocated between the RTEMS Workspace and the C Program |
---|
| 19 | * Heap. |
---|
| 20 | */ |
---|
| 21 | void bsp_get_work_area( |
---|
| 22 | void **work_area_start, |
---|
| 23 | size_t *work_area_size, |
---|
| 24 | void **heap_start, |
---|
| 25 | size_t *heap_size |
---|
| 26 | ) |
---|
| 27 | { |
---|
| 28 | uintptr_t size; |
---|
| 29 | uintptr_t reserve; |
---|
| 30 | uintptr_t spared; |
---|
| 31 | |
---|
[7a2125c] | 32 | reserve = rtems_configuration_get_interrupt_stack_size(); |
---|
| 33 | size = (uintptr_t)BSP_mem_size - (uintptr_t)&__rtems_end - reserve; |
---|
[db77b92] | 34 | |
---|
[7a2125c] | 35 | *work_area_start = (void *)((uintptr_t) &__rtems_end + reserve); |
---|
[db77b92] | 36 | *work_area_size = size; |
---|
| 37 | spared = _bsp_sbrk_init( *work_area_start, work_area_size ); |
---|
| 38 | *heap_start = BSP_BOOTCARD_HEAP_USES_WORK_AREA; |
---|
| 39 | *heap_size = BSP_BOOTCARD_HEAP_SIZE_DEFAULT; |
---|
[7a2125c] | 40 | |
---|
| 41 | /* |
---|
| 42 | * The following may be helpful in debugging what goes wrong when |
---|
| 43 | * you are allocating the Work Area in a new BSP. |
---|
| 44 | */ |
---|
| 45 | #if 0 |
---|
| 46 | printk( "Work Area Base %d %x\n", *work_area_start, *work_area_start ); |
---|
| 47 | printk( "Work Area Size %d %x\n", *work_area_size, *work_area_size ); |
---|
| 48 | printk( "Work Area End %d %x\n", |
---|
| 49 | *work_area_start + size, *work_area_start + size ); |
---|
| 50 | #endif |
---|
[db77b92] | 51 | } |
---|
| 52 | |
---|
Note: See
TracBrowser
for help on using the repository browser.