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bsps: Rework work area initialization

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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.
This commit is contained in:
Sebastian Huber
2019-12-13 06:18:36 +01:00
parent 07e2eacf89
commit eea21eaca1
26 changed files with 557 additions and 378 deletions
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89
bsps/arm/altera-cyclone-v/start/bspgetworkarea.c
View File

@@ -5,7 +5,7 @@
*/
/*
* Copyright (c) 2017 embedded brains GmbH
* Copyright (c) 2017, 2019 embedded brains GmbH
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
@@ -13,15 +13,18 @@
*/
#include <bsp/bootcard.h>
#include <bsp/arm-cp15-start.h>
#include <bsp/fdt.h>
#include <bsp/linker-symbols.h>
#ifdef BSP_FDT_IS_SUPPORTED
#include <bsp/arm-cp15-start.h>
#include <libcpu/arm-cp15.h>
#include <libfdt.h>
#ifdef BSP_FDT_IS_SUPPORTED
#include <rtems/sysinit.h>
#define AREA_COUNT_MAX 16
@@ -29,7 +32,7 @@ static const char memory_path[] = "/memory";
static const char reserved_memory_path[] = "/reserved-memory";
static void adjust_memory_size(const void *fdt, Heap_Area *area)
static void adjust_memory_size(const void *fdt, Memory_Area *area)
{
int node;
@@ -70,13 +73,13 @@ static void adjust_memory_size(const void *fdt, Heap_Area *area)
&& (uintptr_t) bsp_section_nocache_end
< (uintptr_t) bsp_section_work_end
) {
area->size += size - (uintptr_t) bsp_section_work_end;
_Memory_Set_end(area, (void *) (begin + size));
}
}
}
static Heap_Area *find_area(
Heap_Area *areas,
static Memory_Area *find_area(
Memory_Area *areas,
size_t area_count,
uint32_t begin
)
@@ -87,8 +90,8 @@ static Heap_Area *find_area(
uintptr_t b;
uintptr_t e;
b = (uintptr_t) areas[i].begin;
e = b + (uintptr_t) areas[i].size;
b = (uintptr_t) _Memory_Get_begin(&areas[i]);
e = (uintptr_t) _Memory_Get_end(&areas[i]);
if (b <= begin && begin < e) {
return &areas[i];
@@ -100,7 +103,7 @@ static Heap_Area *find_area(
static size_t remove_reserved_memory(
const void *fdt,
Heap_Area *areas,
Memory_Area *areas,
size_t area_count
)
{
@@ -118,11 +121,10 @@ static size_t remove_reserved_memory(
while (node >= 0) {
int len;
const void *val;
uintptr_t area_begin;
uintptr_t area_end;
uintptr_t hole_begin;
uintptr_t hole_end;
Heap_Area *area;
Memory_Area *area;
val = fdt_getprop(fdt, node, "reg", &len);
if (len == 8) {
@@ -133,9 +135,8 @@ static size_t remove_reserved_memory(
}
area = find_area(areas, area_count, hole_begin);
area_begin = (uintptr_t) area->begin;
area_end = area_begin + (uintptr_t) area->size;
area->size = hole_begin - area_begin;
area_end = (uintptr_t) _Memory_Get_end(area);
_Memory_Set_end(area, (void *) hole_end);
if (hole_end <= area_end) {
if (area_count >= AREA_COUNT_MAX) {
@@ -144,8 +145,7 @@ static size_t remove_reserved_memory(
area = &areas[area_count];
++area_count;
area->begin = (void *) hole_end;
area->size = area_end - hole_end;
_Memory_Initialize(area, (void *) hole_end, (void *) area_end);
}
node = fdt_next_subnode(fdt, node);
@@ -155,39 +155,52 @@ static size_t remove_reserved_memory(
return area_count;
}
#else /* !BSP_FDT_IS_SUPPORTED */
static Memory_Area _Memory_Areas[AREA_COUNT_MAX];
#define AREA_COUNT_MAX 1
#endif /* BSP_FDT_IS_SUPPORTED */
void bsp_work_area_initialize(void)
static void bsp_memory_initialize(void)
{
Heap_Area areas[AREA_COUNT_MAX];
size_t area_count;
#ifdef BSP_FDT_IS_SUPPORTED
const void *fdt;
size_t i;
#endif
areas[0].begin = bsp_section_work_begin;
areas[0].size = (uintptr_t) bsp_section_work_size;
_Memory_Initialize(
&_Memory_Areas[0],
bsp_section_work_begin,
bsp_section_work_end
);
area_count = 1;
#ifdef BSP_FDT_IS_SUPPORTED
fdt = bsp_fdt_get();
adjust_memory_size(fdt, &areas[0]);
area_count = remove_reserved_memory(fdt, areas, area_count);
adjust_memory_size(fdt, &_Memory_Areas[0]);
area_count = remove_reserved_memory(fdt, &_Memory_Areas[0], area_count);
for (i = 0; i < area_count; ++i) {
arm_cp15_set_translation_table_entries(
areas[i].begin,
(void *) ((uintptr_t) areas[i].begin + areas[i].size),
_Memory_Get_begin(&_Memory_Areas[i]),
_Memory_Get_end(&_Memory_Areas[i]),
ARMV7_MMU_READ_WRITE_CACHED
);
}
#endif
bsp_work_area_initialize_with_table(areas, area_count);
}
RTEMS_SYSINIT_ITEM(
bsp_memory_initialize,
RTEMS_SYSINIT_MEMORY,
RTEMS_SYSINIT_ORDER_MIDDLE
);
#else /* !BSP_FDT_IS_SUPPORTED */
static Memory_Area _Memory_Areas[] = {
MEMORY_INITIALIZER(bsp_section_work_begin, bsp_section_work_end)
};
#endif /* BSP_FDT_IS_SUPPORTED */
static const Memory_Information _Memory_Information =
MEMORY_INFORMATION_INITIALIZER( _Memory_Areas );
const Memory_Information *_Memory_Get( void )
{
return &_Memory_Information;
}

32
bsps/arm/imx/start/bspstarthooks.c
View File

@@ -22,6 +22,8 @@
#include <bsp/arm-cp15-start.h>
#include <bsp/arm-a9mpcore-start.h>
#include <rtems/sysinit.h>
#include <libfdt.h>
BSP_START_DATA_SECTION static arm_cp15_start_section_config
@@ -106,13 +108,27 @@ BSP_START_TEXT_SECTION void bsp_start_hook_1(void)
bsp_start_clear_bss();
}
void bsp_work_area_initialize(void)
static Memory_Area _Memory_Areas[1];
static void bsp_memory_initialize(void)
{
uintptr_t begin;
uintptr_t end;
begin = imx_mmu_config_table[ARMV7_CP15_START_WORKSPACE_ENTRY_INDEX].begin;
end = imx_mmu_config_table[ARMV7_CP15_START_WORKSPACE_ENTRY_INDEX].end;
bsp_work_area_initialize_default((void *) begin, end - begin);
_Memory_Initialize(
&_Memory_Areas[0],
imx_mmu_config_table[ARMV7_CP15_START_WORKSPACE_ENTRY_INDEX].begin,
imx_mmu_config_table[ARMV7_CP15_START_WORKSPACE_ENTRY_INDEX].end
);
}
RTEMS_SYSINIT_ITEM(
bsp_memory_initialize,
RTEMS_SYSINIT_MEMORY,
RTEMS_SYSINIT_ORDER_MIDDLE
);
static const Memory_Information _Memory_Information =
MEMORY_INFORMATION_INITIALIZER(_Memory_Areas);
const Memory_Information *_Memory_Get(void)
{
return &_Memory_Information;
}

34
bsps/arm/raspberrypi/start/bspstarthooks.c
View File

@@ -31,6 +31,8 @@
#include <bsp/linker-symbols.h>
#include <bsp/arm-cp15-start.h>
#include <rtems/sysinit.h>
#ifdef RTEMS_SMP
#include <rtems/score/smp.h>
#endif
@@ -176,15 +178,27 @@ void BSP_START_TEXT_SECTION bsp_start_hook_1(void)
rpi_video_init();
}
void bsp_work_area_initialize(void)
static Memory_Area _Memory_Areas[1];
static void bsp_memory_initialize(void)
{
uintptr_t begin;
uintptr_t end;
begin = raspberrypi_mmu_config_table[ARMV7_CP15_START_WORKSPACE_ENTRY_INDEX]
.begin;
end = raspberrypi_mmu_config_table[ARMV7_CP15_START_WORKSPACE_ENTRY_INDEX]
.end;
bsp_work_area_initialize_default((void *) begin, end - begin);
_Memory_Initialize(
&_Memory_Areas[0],
raspberrypi_mmu_config_table[ARMV7_CP15_START_WORKSPACE_ENTRY_INDEX].begin,
raspberrypi_mmu_config_table[ARMV7_CP15_START_WORKSPACE_ENTRY_INDEX].end
);
}
RTEMS_SYSINIT_ITEM(
bsp_memory_initialize,
RTEMS_SYSINIT_MEMORY,
RTEMS_SYSINIT_ORDER_MIDDLE
);
static const Memory_Information _Memory_Information =
MEMORY_INFORMATION_INITIALIZER(_Memory_Areas);
const Memory_Information *_Memory_Get(void)
{
return &_Memory_Information;
}

35
bsps/i386/pc386/start/bspgetworkarea.c
View File

@@ -1,8 +1,4 @@
/*
* This routine is an implementation of the bsp_work_area_initialize()
* that can be used by all m68k BSPs following linkcmds conventions
* regarding heap, stack, and workspace allocation.
*
* COPYRIGHT (c) 1989-2008.
* On-Line Applications Research Corporation (OAR).
*
@@ -15,6 +11,8 @@
#include <bsp.h>
#include <bsp/bootcard.h>
#include <rtems/sysinit.h>
#ifdef BSP_GET_WORK_AREA_DEBUG
#include <rtems/bspIo.h>
#endif
@@ -116,17 +114,32 @@ static void bsp_size_memory(void)
bsp_mem_size = topAddr;
}
void bsp_work_area_initialize(void)
{
void *area_start;
uintptr_t area_size;
static Memory_Area _Memory_Areas[ 1 ];
static void bsp_memory_initialize( void )
{
/*
* We need to determine how much memory there is in the system.
*/
bsp_size_memory();
area_start = (void *) rtemsWorkAreaStart;
area_size = (uintptr_t) bsp_mem_size - (uintptr_t) rtemsWorkAreaStart;
bsp_work_area_initialize_default( area_start, area_size );
_Memory_Initialize_by_size(
&_Memory_Areas[0],
(void *) rtemsWorkAreaStart,
(uintptr_t) bsp_mem_size - (uintptr_t) rtemsWorkAreaStart
);
}
RTEMS_SYSINIT_ITEM(
bsp_memory_initialize,
RTEMS_SYSINIT_MEMORY,
RTEMS_SYSINIT_ORDER_MIDDLE
);
static const Memory_Information _Memory_Information =
MEMORY_INFORMATION_INITIALIZER( _Memory_Areas );
const Memory_Information *_Memory_Get( void )
{
return &_Memory_Information;
}

62
bsps/include/bsp/bootcard.h
View File

@@ -21,11 +21,10 @@
#ifndef LIBBSP_SHARED_BOOTCARD_H
#define LIBBSP_SHARED_BOOTCARD_H
#include <string.h>
#include <rtems/config.h>
#include <rtems/bspIo.h>
#include <rtems/malloc.h>
#include <rtems/score/memory.h>
#include <rtems/score/wkspace.h>
#include <bspopts.h>
@@ -71,65 +70,6 @@ void bsp_reset(void);
*/
void boot_card(const char *cmdline) RTEMS_NO_RETURN;
#ifdef CONFIGURE_MALLOC_BSP_SUPPORTS_SBRK
/**
* @brief Gives the BSP a chance to reduce the work area size with sbrk()
* adding more later.
*
* bsp_sbrk_init() may reduce the work area size passed in. The routine
* returns the 'sbrk_amount' to be used when extending the heap. Note that
* the return value may be zero.
*
* In case the @a area size is altered, then the remaining size of the
* @a area must be greater than or equal to @a min_size.
*/
ptrdiff_t bsp_sbrk_init(Heap_Area *area, uintptr_t min_size);
#endif
static inline void bsp_work_area_initialize_default(
void *area_begin,
uintptr_t area_size
)
{
Heap_Area area = {
.begin = area_begin,
.size = area_size
};
#if BSP_DIRTY_MEMORY == 1
memset(area.begin, 0xCF, area.size);
#endif
#ifdef CONFIGURE_MALLOC_BSP_SUPPORTS_SBRK
{
uintptr_t overhead = _Heap_Area_overhead(CPU_HEAP_ALIGNMENT);
uintptr_t work_space_size = rtems_configuration_get_work_space_size();
ptrdiff_t sbrk_amount = bsp_sbrk_init(
&area,
work_space_size
+ overhead
+ (rtems_configuration_get_unified_work_area() ? 0 : overhead)
);
rtems_heap_set_sbrk_amount(sbrk_amount);
}
#endif
_Workspace_Handler_initialization(&area, 1, NULL);
RTEMS_Malloc_Initialize(&area, 1, NULL);
}
static inline void bsp_work_area_initialize_with_table(
Heap_Area *areas,
size_t area_count
)
{
_Workspace_Handler_initialization(areas, area_count, _Heap_Extend);
RTEMS_Malloc_Initialize(areas, area_count, _Heap_Extend);
}
void bsp_work_area_initialize(void);
struct Per_CPU_Control;
/**

27
bsps/powerpc/mpc55xxevb/start/bspgetworkarea.c
View File

@@ -23,22 +23,17 @@
#include <bsp/linker-symbols.h>
LINKER_SYMBOL(bsp_section_work_bonus_begin);
LINKER_SYMBOL(bsp_section_work_bonus_size);
LINKER_SYMBOL(bsp_section_work_bonus_end);
void bsp_work_area_initialize(void)
static Memory_Area _Memory_Areas[] = {
MEMORY_INITIALIZER(bsp_section_work_begin, bsp_section_work_end),
MEMORY_INITIALIZER(bsp_section_work_bonus_begin, bsp_section_work_bonus_end)
};
static const Memory_Information _Memory_Information =
MEMORY_INFORMATION_INITIALIZER(_Memory_Areas);
const Memory_Information *_Memory_Get(void)
{
Heap_Area areas [] = {
{
bsp_section_work_begin,
(uintptr_t) bsp_section_work_size
}, {
bsp_section_work_bonus_begin,
(uintptr_t) bsp_section_work_bonus_size
}
};
bsp_work_area_initialize_with_table(
areas,
sizeof(areas) / sizeof(areas [0])
);
return &_Memory_Information;
}

27
bsps/powerpc/qoriq/start/mmu-config.c
View File

@@ -32,6 +32,7 @@
#include <libfdt.h>
#include <rtems/config.h>
#include <rtems/sysinit.h>
#define TEXT __attribute__((section(".bsp_start_text")))
#define DATA __attribute__((section(".bsp_start_data")))
@@ -338,11 +339,29 @@ void TEXT qoriq_mmu_config(bool boot_processor, int first_tlb, int scratch_tlb)
qoriq_mmu_write_to_tlb1(&context, first_tlb);
}
void TEXT bsp_work_area_initialize(void)
static Memory_Area _Memory_Areas[1];
static const Memory_Information _Memory_Information =
MEMORY_INFORMATION_INITIALIZER(_Memory_Areas);
static void bsp_memory_initialize(void)
{
const entry *we = &config[WORKSPACE_ENTRY_INDEX];
uintptr_t begin = we->begin;
uintptr_t end = begin + we->size;
bsp_work_area_initialize_default((void *) begin, end - begin);
_Memory_Initialize_by_size(
&_Memory_Areas[0],
(void *) we->begin,
we->size
);
}
RTEMS_SYSINIT_ITEM(
bsp_memory_initialize,
RTEMS_SYSINIT_MEMORY,
RTEMS_SYSINIT_ORDER_MIDDLE
);
const Memory_Information *_Memory_Get(void)
{
return &_Memory_Information;
}

30
bsps/powerpc/shared/start/bspgetworkarea.c
View File

@@ -9,15 +9,33 @@
#include <libcpu/powerpc-utility.h>
#include <rtems/sysinit.h>
LINKER_SYMBOL(__rtems_end)
void bsp_work_area_initialize(void)
static Memory_Area _Memory_Areas[1];
static const Memory_Information _Memory_Information =
MEMORY_INFORMATION_INITIALIZER(_Memory_Areas);
static void bsp_memory_initialize(void)
{
uintptr_t work_size;
uintptr_t work_area;
uintptr_t size;
uintptr_t begin;
work_area = (uintptr_t)__rtems_end;
work_size = (uintptr_t)BSP_mem_size - work_area;
begin = (uintptr_t)__rtems_end;
size = (uintptr_t)BSP_mem_size - begin;
bsp_work_area_initialize_default((void *) work_area, work_size);
_Memory_Initialize_by_size(&_Memory_Areas[0], (void *) begin, size);
}
RTEMS_SYSINIT_ITEM(
bsp_memory_initialize,
RTEMS_SYSINIT_MEMORY,
RTEMS_SYSINIT_ORDER_MIDDLE
);
const Memory_Information *_Memory_Get(void)
{
return &_Memory_Information;
}

63
bsps/powerpc/shared/start/sbrk.c
View File

@@ -64,8 +64,13 @@
#include <errno.h>
#include <unistd.h>
#include <bsp.h>
#include <bsp/bootcard.h>
#include <rtems/sysinit.h>
#ifdef CONFIGURE_MALLOC_BSP_SUPPORTS_SBRK
#define INVALID_REMAINING_START ((uintptr_t) -1)
static uintptr_t remaining_start = INVALID_REMAINING_START;
@@ -83,22 +88,35 @@ extern uintptr_t BSP_sbrk_policy[] __attribute__((weak));
#define LIMIT_32M 0x02000000
ptrdiff_t bsp_sbrk_init(Heap_Area *area, uintptr_t min_size)
/**
* @brief Gives the BSP a chance to reduce the work area size with sbrk()
* adding more later.
*
* bsp_sbrk_init() may reduce the work area size passed in. The routine
* returns the 'sbrk_amount' to be used when extending the heap. Note that
* the return value may be zero.
*
* In case the @a mem area size is altered, then the remaining size of the
* @a mem area must be greater than or equal to @a min_size.
*/
static ptrdiff_t bsp_sbrk_init(const Memory_Information *mem, uintptr_t min_size)
{
uintptr_t rval = 0;
uintptr_t policy;
uintptr_t remaining_end;
Memory_Area *area;
remaining_start = (uintptr_t) area->begin;
remaining_size = area->size;
remaining_end = remaining_start + remaining_size;
area = &mem->areas[ 0 ];
remaining_start = (uintptr_t) _Memory_Get_free_begin(area);
remaining_size = _Memory_Get_free_size(area);
remaining_end = (uintptr_t) _Memory_Get_end(area);
if (remaining_start < LIMIT_32M &&
remaining_end > LIMIT_32M &&
min_size <= LIMIT_32M - remaining_start) {
/* clip at LIMIT_32M */
rval = remaining_end - LIMIT_32M;
area->size = LIMIT_32M - remaining_start;
_Memory_Set_end(area, (void *) (LIMIT_32M - remaining_start));
remaining_start = LIMIT_32M;
remaining_size = rval;
}
@@ -106,9 +124,9 @@ ptrdiff_t bsp_sbrk_init(Heap_Area *area, uintptr_t min_size)
policy = (0 == BSP_sbrk_policy[0] ? (uintptr_t)(-1) : BSP_sbrk_policy[0]);
switch ( policy ) {
case (uintptr_t)(-1):
area->size += rval;
remaining_start = (uintptr_t) area->begin + area->size;
remaining_size = 0;
_Memory_Set_end(area, (const char *) _Memory_Get_end(area) + rval);
remaining_start = (uintptr_t) _Memory_Get_end(area);
remaining_size = 0;
break;
case 0:
@@ -124,12 +142,7 @@ ptrdiff_t bsp_sbrk_init(Heap_Area *area, uintptr_t min_size)
return (ptrdiff_t) (rval <= PTRDIFF_MAX ? rval : rval / 2);
}
/*
* This is just so the sbrk test can force its magic. All normal applications
* should just use the default implementation in this file.
*/
void *sbrk(ptrdiff_t incr) __attribute__ (( weak, alias("bsp_sbrk") ));
static void *bsp_sbrk(ptrdiff_t incr)
void *sbrk(ptrdiff_t incr)
{
void *rval=(void*)-1;
@@ -145,3 +158,25 @@ static void *bsp_sbrk(ptrdiff_t incr)
#endif
return rval;
}
static void bsp_sbrk_initialize(void)
{
uintptr_t overhead = _Heap_Area_overhead(CPU_HEAP_ALIGNMENT);
uintptr_t work_space_size = rtems_configuration_get_work_space_size();
ptrdiff_t sbrk_amount = bsp_sbrk_init(
_Memory_Get(),
work_space_size
+ overhead
+ (rtems_configuration_get_unified_work_area() ? 0 : overhead)
);
rtems_heap_set_sbrk_amount(sbrk_amount);
}
RTEMS_SYSINIT_ITEM(
bsp_sbrk_initialize,
RTEMS_SYSINIT_SBRK,
RTEMS_SYSINIT_ORDER_MIDDLE
);
#endif /* CONFIGURE_MALLOC_BSP_SUPPORTS_SBRK */

28
bsps/powerpc/tqm8xx/start/bspgetworkarea.c
View File

@@ -24,11 +24,27 @@
#include <bsp/bootcard.h>
#include <bsp/linker-symbols.h>
void bsp_work_area_initialize(void)
{
char *ram_end = (char *) (TQM_BD_INFO.sdram_size - (uint32_t)TopRamReserved);
void *area_start = bsp_section_work_begin;
uintptr_t area_size = (uintptr_t) ram_end - (uintptr_t) area_start;
#include <rtems/sysinit.h>
bsp_work_area_initialize_default( area_start, area_size );
static Memory_Area _Memory_Areas[1];
static const Memory_Information _Memory_Information =
MEMORY_INFORMATION_INITIALIZER(_Memory_Areas);
static void bsp_memory_initialize(void)
{
void *end = (void *) (TQM_BD_INFO.sdram_size - (uintptr_t)TopRamReserved);
_Memory_Initialize(&_Memory_Areas[0], bsp_section_work_begin, end);
}
RTEMS_SYSINIT_ITEM(
bsp_memory_initialize,
RTEMS_SYSINIT_MEMORY,
RTEMS_SYSINIT_ORDER_MIDDLE
);
const Memory_Information *_Memory_Get(void)
{
return &_Memory_Information;
}

11
bsps/shared/start/bootcard.c
View File

@@ -24,11 +24,18 @@
*/
const char *bsp_boot_cmdline;
#if BSP_DIRTY_MEMORY == 1
static void bsp_dirty_memory(void)
{
_Memory_Fill( _Memory_Get(), 0xcf );
}
RTEMS_SYSINIT_ITEM(
bsp_work_area_initialize,
RTEMS_SYSINIT_BSP_WORK_AREAS,
bsp_dirty_memory,
RTEMS_SYSINIT_DIRTY_MEMORY,
RTEMS_SYSINIT_ORDER_MIDDLE
);
#endif
RTEMS_SYSINIT_ITEM(
bsp_start,

48
bsps/shared/start/bspgetworkarea-default.c
View File

@@ -1,7 +1,7 @@
/**
* @file
*
* This routine is an implementation of the bsp_work_area_initialize()
* This routine is an implementation of the _Memory_Get()
* that can be used by all BSPs following linkcmds conventions
* regarding heap, stack, and workspace allocation.
*/
@@ -33,23 +33,37 @@ extern char WorkAreaBase[];
* We may get the size information from U-Boot or the linker scripts.
*/
#ifdef USE_UBOOT
#include <bsp/u-boot.h>
#else
extern char RamBase[];
extern char RamSize[];
#endif
#include <bsp/u-boot.h>
#include <rtems/sysinit.h>
void bsp_work_area_initialize(void)
static Memory_Area _Memory_Areas[ 1 ];
static void bsp_memory_initialize( void )
{
uintptr_t work_base = (uintptr_t) WorkAreaBase;
uintptr_t ram_end;
char *end;
#ifdef USE_UBOOT
ram_end = (uintptr_t) bsp_uboot_board_info.bi_memstart +
bsp_uboot_board_info.bi_memsize;
#else
ram_end = (uintptr_t)RamBase + (uintptr_t)RamSize;
#endif
bsp_work_area_initialize_default( (void *) work_base, ram_end - work_base );
end = (char *) bsp_uboot_board_info.bi_memstart
+ bsp_uboot_board_info.bi_memsize;
_Memory_Initialize( &_Memory_Areas[ 0 ], WorkAreaBase, end );
}
RTEMS_SYSINIT_ITEM(
bsp_memory_initialize,
RTEMS_SYSINIT_MEMORY,
RTEMS_SYSINIT_ORDER_MIDDLE
);
#else /* !USE_UBOOT */
extern char RamEnd[];
static Memory_Area _Memory_Areas[] = {
MEMORY_INITIALIZER(WorkAreaBase, RamEnd)
};
#endif /* USE_UBOOT */
static const Memory_Information _Memory_Information =
MEMORY_INFORMATION_INITIALIZER( _Memory_Areas );
const Memory_Information *_Memory_Get( void )
{
return &_Memory_Information;
}

36
bsps/sparc/shared/start/bspgetworkarea.c
View File

@@ -13,19 +13,33 @@
#include <bsp.h>
#include <bsp/bootcard.h>
#include <rtems/sysinit.h>
/* Tells us where to put the workspace in case remote debugger is present. */
extern uint32_t rdb_start;
extern uintptr_t rdb_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_work_area_initialize(void)
static Memory_Area _Memory_Areas[ 1 ];
static const Memory_Information _Memory_Information =
MEMORY_INFORMATION_INITIALIZER( _Memory_Areas );
static void bsp_memory_initialize( void )
{
/* Early dynamic memory allocator is placed just above _end */
void *work_area_start = (void *)&end;
uintptr_t work_area_size = (uintptr_t)rdb_start - (uintptr_t)work_area_start;
void *begin;
uintptr_t size;
bsp_work_area_initialize_default(work_area_start, work_area_size);
begin = &end;
size = rdb_start - (uintptr_t)begin;
_Memory_Initialize_by_size( &_Memory_Areas[ 0 ], begin, size );
}
RTEMS_SYSINIT_ITEM(
bsp_memory_initialize,
RTEMS_SYSINIT_MEMORY,
RTEMS_SYSINIT_ORDER_MIDDLE
);
const Memory_Information *_Memory_Get( void )
{
return &_Memory_Information;
}

15
cpukit/include/rtems/confdefs.h
View File

@@ -1258,21 +1258,6 @@ extern rtems_initialization_tasks_table Initialization_tasks[];
/**@{*/
#include <rtems/malloc.h>
#ifdef CONFIGURE_INIT
/**
* By default, RTEMS uses separate heaps for the RTEMS Workspace and
* the C Program Heap. The application can choose optionally to combine
* these to provide one larger memory pool. This is particularly
* useful in combination with the unlimited objects configuration.
*/
#ifdef CONFIGURE_UNIFIED_WORK_AREAS
Heap_Control *RTEMS_Malloc_Heap = &_Workspace_Area;
#else
Heap_Control RTEMS_Malloc_Area;
Heap_Control *RTEMS_Malloc_Heap = &RTEMS_Malloc_Area;
#endif
#endif
#ifdef CONFIGURE_INIT
/**
* This configures the sbrk() support for the malloc family.

6
cpukit/include/rtems/malloc.h
View File

@@ -19,6 +19,7 @@
#include <rtems.h>
#include <rtems/bspIo.h>
#include <rtems/libcsupport.h> /* for malloc_walk() */
#include <rtems/score/memory.h>
#include <stdint.h>
@@ -43,9 +44,8 @@ extern "C" {
extern Heap_Control *RTEMS_Malloc_Heap;
void RTEMS_Malloc_Initialize(
const Heap_Area *areas,
size_t area_count,
Heap_Initialization_or_extend_handler extend
const Memory_Information *mem,
Heap_Initialization_or_extend_handler extend
);
extern ptrdiff_t RTEMS_Malloc_Sbrk_amount;

9
cpukit/include/rtems/score/wkspace.h
View File

@@ -24,6 +24,7 @@
#include <rtems/score/heap.h>
#include <rtems/score/interr.h>
#include <rtems/score/memory.h>
#ifdef __cplusplus
extern "C" {
@@ -53,14 +54,12 @@ extern Heap_Control _Workspace_Area;
*
* This routine performs the initialization necessary for this handler.
*
* @param areas The heap area for the new workspace.
* @param area_count The number of areas for the allocation.
* @param mem The memory information
* @param extend The extension handler for the new workspace.
*/
void _Workspace_Handler_initialization(
Heap_Area *areas,
size_t area_count,
Heap_Initialization_or_extend_handler extend
const Memory_Information *mem,
Heap_Initialization_or_extend_handler extend
);
/**

7
cpukit/include/rtems/sysinit.h
View File

@@ -28,8 +28,13 @@ extern "C" {
*/
#define RTEMS_SYSINIT_RECORD 000100
#define RTEMS_SYSINIT_BSP_EARLY 000140
#define RTEMS_SYSINIT_MEMORY 000180
#define RTEMS_SYSINIT_DIRTY_MEMORY 0001c0
#define RTEMS_SYSINIT_ISR_STACK 000200
#define RTEMS_SYSINIT_BSP_WORK_AREAS 000200
#define RTEMS_SYSINIT_PER_CPU_DATA 000220
#define RTEMS_SYSINIT_SBRK 000240
#define RTEMS_SYSINIT_WORKSPACE 000260
#define RTEMS_SYSINIT_MALLOC 000280
#define RTEMS_SYSINIT_BSP_START 000300
#define RTEMS_SYSINIT_CPU_COUNTER 000400
#define RTEMS_SYSINIT_INITIAL_EXTENSIONS 000500

57
cpukit/libcsupport/src/malloc_initialize.c
View File

@@ -18,33 +18,59 @@
#endif
#include <rtems/malloc.h>
#include <rtems/score/wkspace.h>
#include <rtems/sysinit.h>
#include "malloc_p.h"
Heap_Control *RTEMS_Malloc_Heap;
static void _Malloc_Initialize( void )
{
RTEMS_Malloc_Initialize( _Memory_Get(), _Heap_Extend );
}
RTEMS_SYSINIT_ITEM(
_Malloc_Initialize,
RTEMS_SYSINIT_MALLOC,
RTEMS_SYSINIT_ORDER_MIDDLE
);
#ifdef RTEMS_NEWLIB
static Heap_Control _Malloc_Heap;
void RTEMS_Malloc_Initialize(
const Heap_Area *areas,
size_t area_count,
Heap_Initialization_or_extend_handler extend
const Memory_Information *mem,
Heap_Initialization_or_extend_handler extend
)
{
Heap_Control *heap = RTEMS_Malloc_Heap;
if ( rtems_configuration_get_unified_work_area() ) {
RTEMS_Malloc_Heap = &_Workspace_Area;
} else {
Heap_Control *heap;
Heap_Initialization_or_extend_handler init_or_extend;
uintptr_t page_size;
size_t i;
if ( !rtems_configuration_get_unified_work_area() ) {
Heap_Initialization_or_extend_handler init_or_extend = _Heap_Initialize;
uintptr_t page_size = CPU_HEAP_ALIGNMENT;
size_t i;
heap = &_Malloc_Heap;
RTEMS_Malloc_Heap = heap;
init_or_extend = _Heap_Initialize;
page_size = CPU_HEAP_ALIGNMENT;
for (i = 0; i < area_count; ++i) {
const Heap_Area *area = &areas [i];
uintptr_t space_available = (*init_or_extend)(
for (i = 0; i < _Memory_Get_count( mem ); ++i) {
Memory_Area *area;
uintptr_t space_available;
area = _Memory_Get_area( mem, i );
space_available = ( *init_or_extend )(
heap,
area->begin,
area->size,
_Memory_Get_free_begin( area ),
_Memory_Get_free_size( area ),
page_size
);
if ( space_available > 0 ) {
_Memory_Consume( area, _Memory_Get_free_size( area ) );
init_or_extend = extend;
}
}
@@ -56,9 +82,8 @@ void RTEMS_Malloc_Initialize(
}
#else
void RTEMS_Malloc_Initialize(
Heap_Area *areas,
size_t area_count,
Heap_Initialization_or_extend_handler extend
const Memory_Information *mem,
Heap_Initialization_or_extend_handler extend
)
{
/* FIXME: Dummy function */

13
cpukit/sapi/src/exinit.c
View File

@@ -30,6 +30,7 @@
#include <rtems/score/heap.h>
#include <rtems/score/interr.h>
#include <rtems/score/isr.h>
#include <rtems/score/percpudata.h>
#include <rtems/score/priority.h>
#include <rtems/score/schedulerimpl.h>
#include <rtems/score/smpimpl.h>
@@ -57,6 +58,18 @@ _Objects_Information_table[ OBJECTS_APIS_LAST + 1 ] = {
&_POSIX_Objects[ 0 ]
};
RTEMS_LINKER_RWSET(
_Per_CPU_Data,
#if defined(RTEMS_SMP)
/*
* In SMP configurations, prevent false cache line sharing of per-processor
* data with a proper alignment.
*/
RTEMS_ALIGNED( CPU_CACHE_LINE_BYTES )
#endif
char
);
static void rtems_initialize_data_structures(void)
{
/*

42
cpukit/score/src/smp.c
View File

@@ -20,9 +20,14 @@
#include <rtems/score/smpimpl.h>
#include <rtems/score/assert.h>
#include <rtems/score/memory.h>
#include <rtems/score/percpudata.h>
#include <rtems/score/schedulerimpl.h>
#include <rtems/score/threadimpl.h>
#include <rtems/config.h>
#include <rtems/sysinit.h>
#include <string.h>
#if CPU_USE_DEFERRED_FP_SWITCH == TRUE
#error "deferred FP switch not implemented for SMP"
@@ -252,3 +257,40 @@ void _SMP_Send_message_multicast(
}
}
}
static void _Per_CPU_Data_initialize( void )
{
uintptr_t size;
size = RTEMS_LINKER_SET_SIZE( _Per_CPU_Data );
if ( size > 0 ) {
const Memory_Information *mem;
Per_CPU_Control *cpu;
uint32_t cpu_index;
uint32_t cpu_max;
mem = _Memory_Get();
cpu = _Per_CPU_Get_by_index( 0 );
cpu->data = RTEMS_LINKER_SET_BEGIN( _Per_CPU_Data );
cpu_max = rtems_configuration_get_maximum_processors();
for ( cpu_index = 1 ; cpu_index < cpu_max ; ++cpu_index ) {
cpu = _Per_CPU_Get_by_index( cpu_index );
cpu->data = _Memory_Allocate( mem, size, CPU_CACHE_LINE_BYTES );
if( cpu->data == NULL ) {
_Internal_error( INTERNAL_ERROR_NO_MEMORY_FOR_PER_CPU_DATA );
}
memcpy( cpu->data, RTEMS_LINKER_SET_BEGIN( _Per_CPU_Data ), size);
}
}
}
RTEMS_SYSINIT_ITEM(
_Per_CPU_Data_initialize,
RTEMS_SYSINIT_PER_CPU_DATA,
RTEMS_SYSINIT_ORDER_MIDDLE
);

123
cpukit/score/src/wkspace.c
View File

@@ -22,11 +22,11 @@
#include <rtems/score/assert.h>
#include <rtems/score/heapimpl.h>
#include <rtems/score/interr.h>
#include <rtems/score/percpudata.h>
#include <rtems/score/threadimpl.h>
#include <rtems/score/tls.h>
#include <rtems/posix/pthread.h>
#include <rtems/config.h>
#include <rtems/sysinit.h>
#include <string.h>
@@ -35,18 +35,6 @@
#include <rtems/bspIo.h>
#endif
RTEMS_LINKER_RWSET(
_Per_CPU_Data,
#if defined(RTEMS_SMP)
/*
* In SMP configurations, prevent false cache line sharing of per-processor
* data with a proper alignment.
*/
RTEMS_ALIGNED( CPU_CACHE_LINE_BYTES )
#endif
char
);
Heap_Control _Workspace_Area;
static uintptr_t _Workspace_Space_for_TLS( uintptr_t page_size )
@@ -84,85 +72,20 @@ static uintptr_t _Workspace_Space_for_TLS( uintptr_t page_size )
return space;
}
#ifdef RTEMS_SMP
static void *_Workspace_Allocate_from_areas(
Heap_Area *areas,
size_t area_count,
uintptr_t size,
uintptr_t alignment
)
static void _Workspace_Initialize( void )
{
size_t i;
for ( i = 0; i < area_count; ++i ) {
Heap_Area *area;
uintptr_t alloc_begin;
uintptr_t alloc_size;
area = &areas[ i ];
alloc_begin = (uintptr_t) area->begin;
alloc_begin = ( alloc_begin + alignment - 1 ) & ~( alignment - 1 );
alloc_size = size;
alloc_size += alloc_begin - (uintptr_t) area->begin;
if ( area->size >= alloc_size ) {
area->begin = (void *) ( alloc_begin + size );
area->size -= alloc_size;
return (void *) alloc_begin;
}
}
return NULL;
_Workspace_Handler_initialization( _Memory_Get(), _Heap_Extend );
}
#endif
static void _Workspace_Allocate_per_CPU_data(
Heap_Area *areas,
size_t area_count
)
{
#ifdef RTEMS_SMP
uintptr_t size;
size = RTEMS_LINKER_SET_SIZE( _Per_CPU_Data );
if ( size > 0 ) {
Per_CPU_Control *cpu;
uint32_t cpu_index;
uint32_t cpu_max;
cpu = _Per_CPU_Get_by_index( 0 );
cpu->data = RTEMS_LINKER_SET_BEGIN( _Per_CPU_Data );
cpu_max = rtems_configuration_get_maximum_processors();
for ( cpu_index = 1 ; cpu_index < cpu_max ; ++cpu_index ) {
cpu = _Per_CPU_Get_by_index( cpu_index );
cpu->data = _Workspace_Allocate_from_areas(
areas,
area_count,
size,
CPU_CACHE_LINE_BYTES
);
if( cpu->data == NULL ) {
_Internal_error( INTERNAL_ERROR_NO_MEMORY_FOR_PER_CPU_DATA );
}
memcpy( cpu->data, RTEMS_LINKER_SET_BEGIN( _Per_CPU_Data ), size);
}
}
#else
(void) areas;
(void) area_count;
#endif
}
RTEMS_SYSINIT_ITEM(
_Workspace_Initialize,
RTEMS_SYSINIT_WORKSPACE,
RTEMS_SYSINIT_ORDER_MIDDLE
);
void _Workspace_Handler_initialization(
Heap_Area *areas,
size_t area_count,
Heap_Initialization_or_extend_handler extend
const Memory_Information *mem,
Heap_Initialization_or_extend_handler extend
)
{
Heap_Initialization_or_extend_handler init_or_extend;
@@ -173,10 +96,7 @@ void _Workspace_Handler_initialization(
uintptr_t overhead;
size_t i;
_Workspace_Allocate_per_CPU_data( areas, area_count );
page_size = CPU_HEAP_ALIGNMENT;
remaining = rtems_configuration_get_work_space_size();
remaining += _Workspace_Space_for_TLS( page_size );
@@ -185,25 +105,27 @@ void _Workspace_Handler_initialization(
unified = rtems_configuration_get_unified_work_area();
overhead = _Heap_Area_overhead( page_size );
for ( i = 0; i < area_count; ++i ) {
Heap_Area *area;
for ( i = 0; i < _Memory_Get_count( mem ); ++i ) {
Memory_Area *area;
uintptr_t free_size;
area = &areas[ i ];
area = _Memory_Get_area( mem, i );
free_size = _Memory_Get_free_size( area );
if ( do_zero ) {
memset( area->begin, 0, area->size );
memset( _Memory_Get_free_begin( area ), 0, free_size );
}
if ( area->size > overhead ) {
if ( free_size > overhead ) {
uintptr_t space_available;
uintptr_t size;
if ( unified ) {
size = area->size;
size = free_size;
} else {
if ( remaining > 0 ) {
size = remaining < area->size - overhead ?
remaining + overhead : area->size;
size = remaining < free_size - overhead ?
remaining + overhead : free_size;
} else {
size = 0;
}
@@ -211,13 +133,12 @@ void _Workspace_Handler_initialization(
space_available = ( *init_or_extend )(
&_Workspace_Area,
area->begin,
_Memory_Get_free_begin( area ),
size,
page_size
);
area->begin = (char *) area->begin + size;
area->size -= size;
_Memory_Consume( area, size );
if ( space_available < remaining ) {
remaining -= space_available;

32
testsuites/libtests/malloc04/init.c
View File

@@ -78,7 +78,12 @@ rtems_task Init(
)
{
Heap_Control *real_heap;
Heap_Area area;
Memory_Area area;
Memory_Information mem = {
.count = 0,
.areas = &area
};
void *p;
TEST_BEGIN();
@@ -93,9 +98,8 @@ rtems_task Init(
sbrk_count = 0;
offset = 256;
area.begin = &Malloc_Heap [0];
area.size = offset;
RTEMS_Malloc_Initialize( &area, 1, NULL );
_Memory_Initialize_by_size( &area, &Malloc_Heap[ 0 ], offset );
RTEMS_Malloc_Initialize( &mem, NULL );
errno = 0;
p = malloc( 256 );
@@ -109,9 +113,8 @@ rtems_task Init(
sbrk_count = 0;
offset = 256;
area.begin = &Malloc_Heap [0];
area.size = offset;
RTEMS_Malloc_Initialize( &area, 1, NULL );
_Memory_Initialize_by_size( &area, &Malloc_Heap[ 0 ], offset );
RTEMS_Malloc_Initialize( &mem, NULL );
p = malloc(1);
rtems_test_assert( p != NULL );
@@ -125,9 +128,8 @@ rtems_task Init(
sbrk_count = 0;
offset = 256;
area.begin = &Malloc_Heap [0];
area.size = offset;
RTEMS_Malloc_Initialize( &area, 1, NULL );
_Memory_Initialize_by_size( &area, &Malloc_Heap[ 0 ], offset );
RTEMS_Malloc_Initialize( &mem, NULL );
errno = 0;
p = malloc( sizeof( Malloc_Heap ) );
@@ -139,9 +141,8 @@ rtems_task Init(
sbrk_count = 0;
offset = 256;
area.begin = &Malloc_Heap [0];
area.size = offset;
RTEMS_Malloc_Initialize( &area, 1, NULL );
_Memory_Initialize_by_size( &area, &Malloc_Heap[ 0 ], offset );
RTEMS_Malloc_Initialize( &mem, NULL );
p = malloc( 128 );
rtems_test_assert( p != NULL );
@@ -155,9 +156,8 @@ rtems_task Init(
sbrk_count = -1;
offset = 256;
area.begin = &Malloc_Heap [0];
area.size = offset;
RTEMS_Malloc_Initialize( &area, 1, NULL );
_Memory_Initialize_by_size( &area, &Malloc_Heap[ 0 ], offset );
RTEMS_Malloc_Initialize( &mem, NULL );
errno = 0;
p = malloc( 256 );

33
testsuites/smptests/smpfatal09/init.c
View File

@@ -31,7 +31,8 @@
#include <rtems.h>
#include <rtems/score/percpudata.h>
#include <rtems/score/wkspace.h>
#include <rtems/score/memory.h>
#include <rtems/sysinit.h>
#include <tmacros.h>
@@ -41,7 +42,26 @@ const char rtems_test_name[] = "SMPFATAL 9";
static void Init( rtems_task_argument arg )
{
Heap_Area area = { .begin = NULL, .size = 0 };
(void) arg;
}
static void consume_all_memory( void )
{
const Memory_Information *mem;
size_t i;
mem = _Memory_Get();
for ( i = 0; i < _Memory_Get_count( mem ); ++i ) {
Memory_Area *area;
area = _Memory_Get_area( mem, i );
_Memory_Consume( area, _Memory_Get_free_size( area ) );
}
}
static void begin_test( void )
{
int i;
TEST_BEGIN();
@@ -49,10 +69,15 @@ static void Init( rtems_task_argument arg )
RTEMS_OBFUSCATE_VARIABLE( i );
rtems_test_assert( i == 123 );
_Workspace_Handler_initialization( &area, 1, NULL );
rtems_test_assert( 0 );
consume_all_memory();
}
RTEMS_SYSINIT_ITEM(
begin_test,
RTEMS_SYSINIT_PER_CPU_DATA,
RTEMS_SYSINIT_ORDER_FIRST
);
static void fatal_extension(
rtems_fatal_source source,
bool always_set_to_false,

34
testsuites/sptests/spfatal09/init.c
View File

@@ -15,18 +15,44 @@
* http://www.rtems.org/license/LICENSE.
*/
#include <rtems/malloc.h>
#include <rtems/libcsupport.h>
#include <rtems/score/memory.h>
#include <rtems/sysinit.h>
#include <stdlib.h>
#define FATAL_ERROR_TEST_NAME "9"
#define FATAL_ERROR_DESCRIPTION "Bad heap address to malloc"
#define FATAL_ERROR_EXPECTED_SOURCE INTERNAL_ERROR_CORE
#define FATAL_ERROR_EXPECTED_ERROR INTERNAL_ERROR_NO_MEMORY_FOR_HEAP
static void force_error(void)
static void force_error( void )
{
RTEMS_Malloc_Initialize( NULL, 0, NULL );
void *p;
/* we will not run this far */
p = malloc( 1 );
RTEMS_OBFUSCATE_VARIABLE( p );
}
static void consume_all_memory( void )
{
const Memory_Information *mem;
size_t i;
mem = _Memory_Get();
for ( i = 0; i < _Memory_Get_count( mem ); ++i ) {
Memory_Area *area;
area = _Memory_Get_area( mem, i );
_Memory_Consume( area, _Memory_Get_free_size( area ) );
}
}
RTEMS_SYSINIT_ITEM(
consume_all_memory,
RTEMS_SYSINIT_MALLOC,
RTEMS_SYSINIT_ORDER_FIRST
);
#include "../spfatal_support/spfatalimpl.h"

30
testsuites/sptests/spfatal12/init.c
View File

@@ -15,6 +15,8 @@
*/
#include <rtems/score/wkspace.h>
#include <rtems/score/memory.h>
#include <rtems/sysinit.h>
#define FATAL_ERROR_TEST_NAME "12"
#define FATAL_ERROR_DESCRIPTION \
@@ -22,12 +24,34 @@
#define FATAL_ERROR_EXPECTED_SOURCE INTERNAL_ERROR_CORE
#define FATAL_ERROR_EXPECTED_ERROR INTERNAL_ERROR_TOO_LITTLE_WORKSPACE
static void force_error(void)
static void force_error( void )
{
Heap_Area area = { .begin = NULL, .size = 0 };
void *p;
_Workspace_Handler_initialization( &area, 1, NULL );
/* we will not run this far */
p = _Workspace_Allocate( 1 );
RTEMS_OBFUSCATE_VARIABLE( p );
}
static void consume_all_memory( void )
{
const Memory_Information *mem;
size_t i;
mem = _Memory_Get();
for ( i = 0; i < _Memory_Get_count( mem ); ++i ) {
Memory_Area *area;
area = _Memory_Get_area( mem, i );
_Memory_Consume( area, _Memory_Get_free_size( area ) );
}
}
RTEMS_SYSINIT_ITEM(
consume_all_memory,
RTEMS_SYSINIT_WORKSPACE,
RTEMS_SYSINIT_ORDER_FIRST
);
#include "../spfatal_support/spfatalimpl.h"

12
testsuites/sptests/spsysinit01/init.c
View File

@@ -71,8 +71,8 @@
const char rtems_test_name[] = "SPSYSINIT 1";
typedef enum {
BSP_WORK_AREAS_PRE,
BSP_WORK_AREAS_POST,
WORKSPACE_PRE,
WORKSPACE_POST,
BSP_START_PRE,
BSP_START_POST,
CPU_COUNTER_PRE,
@@ -200,16 +200,16 @@ static bool info_is_init(const Objects_Information *info, size_t count)
return _Chain_Node_count_unprotected(&info->Inactive) == count;
}
FIRST(RTEMS_SYSINIT_BSP_WORK_AREAS)
FIRST(RTEMS_SYSINIT_WORKSPACE)
{
assert(_Workspace_Area.area_begin == 0);
next_step(BSP_WORK_AREAS_PRE);
next_step(WORKSPACE_PRE);
}
LAST(RTEMS_SYSINIT_BSP_WORK_AREAS)
LAST(RTEMS_SYSINIT_WORKSPACE)
{
assert(_Workspace_Area.area_begin != 0);
next_step(BSP_WORK_AREAS_POST);
next_step(WORKSPACE_POST);
}
FIRST(RTEMS_SYSINIT_BSP_START)