forked from Imagelibrary/rtems
eea21eaca1
The work area initialization was done by the BSP through bsp_work_area_initialize(). This approach predated the system initialization through the system initialization linker set. The workspace and C program heap were unconditionally initialized. The aim is to support RTEMS application configurations which do not need the workspace and C program heap. In these configurations, the workspace and C prgram heap should not get initialized. Change all bsp_work_area_initialize() to implement _Memory_Get() instead. Move the dirty memory, sbrk(), per-CPU data, workspace, and malloc() heap initialization into separate system initialization steps. This makes it also easier to test the individual initialization steps. This change adds a dependency to _Heap_Extend() to all BSPs. This dependency will be removed in a follow up change. Update #3838.
42 lines
858 B
C
42 lines
858 B
C
/*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#include <bsp.h>
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#include <bsp/bootcard.h>
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#include <libcpu/powerpc-utility.h>
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#include <rtems/sysinit.h>
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LINKER_SYMBOL(__rtems_end)
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static Memory_Area _Memory_Areas[1];
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static const Memory_Information _Memory_Information =
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MEMORY_INFORMATION_INITIALIZER(_Memory_Areas);
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static void bsp_memory_initialize(void)
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{
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uintptr_t size;
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uintptr_t begin;
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begin = (uintptr_t)__rtems_end;
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size = (uintptr_t)BSP_mem_size - begin;
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_Memory_Initialize_by_size(&_Memory_Areas[0], (void *) begin, size);
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}
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RTEMS_SYSINIT_ITEM(
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bsp_memory_initialize,
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RTEMS_SYSINIT_MEMORY,
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RTEMS_SYSINIT_ORDER_MIDDLE
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);
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const Memory_Information *_Memory_Get(void)
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{
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return &_Memory_Information;
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}
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