forked from Imagelibrary/rtems
22bd219bf5
* BSP_TIMES, bsp.t, c4x.texi, callconv.t, cpumodel.t, cputable.t, fatalerr.t, intr_NOTIMES.t, memmodel.t, preface.texi, timeBSP.t: New files. These should have been added long ago.
110 lines
3.6 KiB
Perl
110 lines
3.6 KiB
Perl
@c
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@c COPYRIGHT (c) 1988-1999.
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@c On-Line Applications Research Corporation (OAR).
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@c All rights reserved.
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@c
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@c $Id$
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@c
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@chapter Processor Dependent Information Table
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@section Introduction
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Any highly processor dependent information required
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to describe a processor to RTEMS is provided in the CPU
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Dependent Information Table. This table is not required for all
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processors supported by RTEMS. This chapter describes the
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contents, if any, for a particular processor type.
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@section CPU Dependent Information Table
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The XXX version of the RTEMS CPU Dependent
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Information Table contains the information required to interface
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a Board Support Package and RTEMS on the XXX. This
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information is provided to allow RTEMS to interoperate
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effectively with the BSP. The C structure definition is given
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here:
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@example
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@group
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typedef struct @{
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void (*pretasking_hook)( void );
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void (*predriver_hook)( void );
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void (*postdriver_hook)( void );
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void (*idle_task)( void );
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boolean do_zero_of_workspace;
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unsigned32 idle_task_stack_size;
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unsigned32 interrupt_stack_size;
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unsigned32 extra_mpci_receive_server_stack;
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void * (*stack_allocate_hook)( unsigned32 );
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void (*stack_free_hook)( void* );
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/* end of fields required on all CPUs */
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/* XXX CPU family dependent stuff */
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@} rtems_cpu_table;
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@end group
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@end example
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@table @code
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@item pretasking_hook
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is the address of the user provided routine which is invoked
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once RTEMS APIs are initialized. This routine will be invoked
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before any system tasks are created. Interrupts are disabled.
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This field may be NULL to indicate that the hook is not utilized.
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@item predriver_hook
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is the address of the user provided
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routine that is invoked immediately before the
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the device drivers and MPCI are initialized. RTEMS
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initialization is complete but interrupts and tasking are disabled.
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This field may be NULL to indicate that the hook is not utilized.
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@item postdriver_hook
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is the address of the user provided
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routine that is invoked immediately after the
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the device drivers and MPCI are initialized. RTEMS
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initialization is complete but interrupts and tasking are disabled.
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This field may be NULL to indicate that the hook is not utilized.
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@item idle_task
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is the address of the optional user
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provided routine which is used as the system's IDLE task. If
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this field is not NULL, then the RTEMS default IDLE task is not
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used. This field may be NULL to indicate that the default IDLE
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is to be used.
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@item do_zero_of_workspace
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indicates whether RTEMS should
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zero the Workspace as part of its initialization. If set to
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TRUE, the Workspace is zeroed. Otherwise, it is not.
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@item idle_task_stack_size
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is the size of the RTEMS idle task stack in bytes.
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If this number is less than MINIMUM_STACK_SIZE, then the
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idle task's stack will be MINIMUM_STACK_SIZE in byte.
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@item interrupt_stack_size
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is the size of the RTEMS
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allocated interrupt stack in bytes. This value must be at least
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as large as MINIMUM_STACK_SIZE.
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@item extra_mpci_receive_server_stack
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is the extra stack space allocated for the RTEMS MPCI receive server task
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in bytes. The MPCI receive server may invoke nearly all directives and
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may require extra stack space on some targets.
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@item stack_allocate_hook
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is the address of the optional user provided routine which allocates
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memory for task stacks. If this hook is not NULL, then a stack_free_hook
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must be provided as well.
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@item stack_free_hook
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is the address of the optional user provided routine which frees
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memory for task stacks. If this hook is not NULL, then a stack_allocate_hook
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must be provided as well.
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@item XXX
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is where the CPU family dependent stuff goes.
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@end table
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