forked from Imagelibrary/rtems
2008-09-12 Joel Sherrill <joel.sherrill@OARcorp.com>
* Makefile.am, configure.ac, startup/bspstart.c: Now support bsp_get_work_area() and used shared implementation of it and bsp_pretasking_hook. Ticker runs. * startup/bspgetworkarea.c: New file.
This commit is contained in:
Joel Sherrill
@@ -1,3 +1,10 @@
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2008-09-12 Joel Sherrill <joel.sherrill@OARcorp.com>
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* Makefile.am, configure.ac, startup/bspstart.c: Now support
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bsp_get_work_area() and used shared implementation of it and
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bsp_pretasking_hook. Ticker runs.
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* startup/bspgetworkarea.c: New file.
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2008-09-10 Joel Sherrill <joel.sherrill@oarcorp.com>
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* startup/bspstart.c: Review of all bsp_cleanup() implementations. In
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@@ -38,6 +38,7 @@ gbaoverrides_rel_CPPFLAGS = $(AM_CPPFLAGS)
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gbaoverrides_rel_LDFLAGS = $(RTEMS_RELLDFLAGS)
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startup_SOURCES = ../../shared/bsplibc.c ../../shared/bsppost.c \
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startup/bspgetworkarea.c ../../shared/bsppretaskinghook.c \
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../../shared/bsppredriverhook.c startup/bspclean.c \
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../../shared/bootcard.c ../../shared/sbrk.c \
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../../shared/gnatinstallhandler.c
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@@ -18,6 +18,8 @@ RTEMS_PROG_CCAS
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RTEMS_CHECK_NETWORKING
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AM_CONDITIONAL(HAS_NETWORKING,test "$HAS_NETWORKING" = "yes")
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RTEMS_BSP_BOOTCARD_HANDLES_RAM_ALLOCATION
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# Explicitly list all Makefiles here
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AC_CONFIG_FILES([Makefile])
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AC_OUTPUT
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33
c/src/lib/libbsp/arm/gba/startup/bspgetworkarea.c
Normal file
33
c/src/lib/libbsp/arm/gba/startup/bspgetworkarea.c
Normal file
@@ -0,0 +1,33 @@
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/*
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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.com/license/LICENSE.
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*
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* $Id$
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*/
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#include <bsp.h>
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#include <bsp/bootcard.h>
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#include <stdint.h>
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extern void _end;
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extern void __heap_limit;
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/*
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* This method returns the base address and size of the area which
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* is to be allocated between the RTEMS Workspace and the C Program
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* Heap.
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*/
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void bsp_get_work_area(
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void **work_area_start,
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size_t *work_area_size,
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void **heap_start,
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size_t *heap_size
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)
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{
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*work_area_start = (void *)&_end;
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*work_area_size = (uintptr_t)&__heap_limit - (uintptr_t)&_end;
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*heap_start = BSP_BOOTCARD_HEAP_USES_WORK_AREA;
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*heap_size = BSP_BOOTCARD_HEAP_SIZE_DEFAULT;
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}
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@@ -26,89 +26,12 @@
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#include <gba.h>
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#include <conio.h>
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#define BSP_DEBUG 0
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/* Global Variables, Defined in 'linkcmds' */
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extern void _end;
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extern void _stack_size;
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extern void _irq_max_vector;
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extern void __heap_limit;
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extern void __ro_start;
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extern void __ro_end;
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extern void __data_start;
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extern void __data_end;
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extern void __load_start_data;
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extern void __load_stop_data;
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extern void __ewram_start;
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extern void __ewram_end;
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extern void __load_start_ewram;
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extern void __load_stop_ewram;
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extern void __iwram_start;
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extern void __iwram_end;
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extern void __load_start_iwram;
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extern void __load_stop_iwram;
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extern void __bss_start;
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extern void __bss_end;
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/* External Prototypes */
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extern void rtems_irq_mngt_init(void);
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extern void bsp_libc_init( void *, uint32_t, int );
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/** Chip registers */
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volatile unsigned int *Regs = (unsigned int *)GBA_IO_REGS_ADDR;
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/**
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* Size of heap if it is 0 it will be dynamically defined by memory size,
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* otherwise the value should be changed by binary patch
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*/
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uint32_t _heap_size = 0;
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/** Address of start of free memory - should be updated after creating new partitions or regions.*/
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uint32_t rtemsFreeMemStart;
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/**
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* @brief BSP pretasking hook.
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*
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* Called just before drivers are initialized.
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* Used to setup libc and install any BSP extensions.
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*
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* NOTE: Must not use libc (to do io) from here, since drivers are not yet initialized.
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*
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* @param None
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* @return None
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*/
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void bsp_pretasking_hook(void)
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{
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if (_heap_size == 0) {
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_heap_size = (uint32_t)&__heap_limit - rtemsFreeMemStart;
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}
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bsp_libc_init((void *)rtemsFreeMemStart, _heap_size, 0);
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rtemsFreeMemStart += _heap_size;
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#if BSP_DEBUG
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/* The following information is very useful when debugging. */
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printk("[bsp_pretasking_hook]\n");
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printk("_heap_size = 0x%x\n", _heap_size);
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printk("_stack_size = 0x%x\n", (uint32_t)&_stack_size);
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printk("_irq_max_vector = 0x%x\n", (uint32_t)&_irq_max_vector);
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printk("__ro_start = 0x%x : __ro_end = 0x%x\n", (uint32_t)&__ro_start, (uint32_t)&__ro_end);
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printk("__ewram_start = 0x%x : __ewram_end = 0x%x\n", (uint32_t)&__ewram_start, (uint32_t)&__ewram_end);
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printk("__data_start = 0x%x : __data_end = 0x%x\n", (uint32_t)&__data_start, (uint32_t)&__data_end);
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printk("__bss_start = 0x%x : __bss_end = 0x%x\n", (uint32_t)&__bss_start,(uint32_t)&__bss_end);
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printk("__iwram_start = 0x%x : __iwram_end = 0x%x\n", (uint32_t)&__iwram_start,(uint32_t)&__iwram_end);
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printk("__load_start_iwram = 0x%x\n", (uint32_t)&__load_start_iwram);
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printk("__load_stop_iwram = 0x%x\n", (uint32_t)&__load_stop_iwram);
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printk("__load_start_ewram = 0x%x\n", (uint32_t)&__load_start_ewram);
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printk("__load_stop_ewram = 0x%x\n", (uint32_t)&__load_stop_ewram);
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printk("__load_start_data = 0x%x\n", (uint32_t)&__load_start_data);
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printk("__load_stop_data = 0x%x\n", (uint32_t)&__load_stop_data);
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#endif
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}
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/**
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* @brief BSP Start
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*
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@@ -119,46 +42,19 @@ void bsp_pretasking_hook(void)
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*/
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void bsp_start_default( void )
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{
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/* set the value of start of free memory. */
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rtemsFreeMemStart = (uint32_t)&_end;
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/* Place RTEMS workspace at beginning of free memory. */
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Configuration.work_space_start = (void *)rtemsFreeMemStart;
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rtemsFreeMemStart += rtems_configuration_get_work_space_size();
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/* Init conio */
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gba_textmode(CO60);
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/* Init rtems exceptions management */
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/*!!!!!GBA - Can't use exception vectors in GBA because they are already in GBA ROM BIOS */
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/* Init rtems exceptions management
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* !!!!!GBA -- Can't use exception vectors in GBA because they are
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* already in GBA ROM BIOS
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*/
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/* rtems_exception_init_mngt(); */
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/* Init rtems interrupt management */
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rtems_irq_mngt_init();
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#if BSP_DEBUG
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/* The following information is very useful when debugging. */
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printk("[bsp_start]\n");
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printk("rtemsFreeMemStart= 0x%x\n", rtemsFreeMemStart);
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printk("__heap_limit = 0x%x\n", (uint32_t)&__heap_limit);
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printk("work_space_start = 0x%x size = 0x%x\n",
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Configuration.work_space_start,
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rtems_configuration_get_work_space_size());
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printk("microseconds_per_tick = 0x%x\n",
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rtems_configuration_get_microseconds_per_tick());
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printk("ticks_per_timeslice = 0x%x\n",
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rtems_configuration_get_ticks_per_timeslice());
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#endif
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/* Do we have enough memory */
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if ((uint32_t)&__heap_limit < rtemsFreeMemStart) {
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printk("\nFatal Error: Memory overflow[0x%x]!\n",rtemsFreeMemStart);
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bsp_cleanup();
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}
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}
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/**
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* @brief weak alias for bsp_start_default
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*
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