@c
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@c
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@c COPYRIGHT (c) 1988-2002.
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@c COPYRIGHT (c) 1988-2002.
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@c On-Line Applications Research Corporation (OAR).
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@c On-Line Applications Research Corporation (OAR).
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@c All rights reserved.
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@c All rights reserved.
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@c
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@c
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@c cputable.t,v 1.10 2002/01/17 21:47:46 joel Exp
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@c cputable.t,v 1.10 2002/01/17 21:47:46 joel Exp
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@c
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@c
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@chapter Processor Dependent Information Table
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@chapter Processor Dependent Information Table
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@section Introduction
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@section Introduction
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Any highly processor dependent information required
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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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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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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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processors supported by RTEMS. This chapter describes the
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contents, if any, for a particular processor type.
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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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@section CPU Dependent Information Table
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The i960CA version of the RTEMS CPU Dependent
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The i960CA version of the RTEMS CPU Dependent
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Information Table contains the information required to interface
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Information Table contains the information required to interface
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a Board Support Package and RTEMS on the i960CA. This
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a Board Support Package and RTEMS on the i960CA. This
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information is provided to allow RTEMS to interoperate
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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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effectively with the BSP. The C structure definition is given
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here:
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here:
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@example
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@example
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@group
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@group
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typedef struct @{
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typedef struct @{
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void (*pretasking_hook)( void );
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void (*pretasking_hook)( void );
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void (*predriver_hook)( void );
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void (*predriver_hook)( void );
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void (*postdriver_hook)( void );
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void (*postdriver_hook)( void );
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void (*idle_task)( void );
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void (*idle_task)( void );
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boolean do_zero_of_workspace;
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boolean do_zero_of_workspace;
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unsigned32 idle_task_stack_size;
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unsigned32 idle_task_stack_size;
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unsigned32 interrupt_stack_size;
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unsigned32 interrupt_stack_size;
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unsigned32 extra_mpci_receive_server_stack;
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unsigned32 extra_mpci_receive_server_stack;
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void (*stack_free_hook)( void* );
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void (*stack_free_hook)( void* );
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/* end of fields required on all CPUs */
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/* end of fields required on all CPUs */
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i960_PRCB *Prcb;
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i960_PRCB *Prcb;
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@} rtems_cpu_table;
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@} rtems_cpu_table;
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@end group
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@end group
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@end example
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@end example
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The contents of the i960 Processor Control Block
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The contents of the i960 Processor Control Block
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are discussed in the User's Manual for the particular
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are discussed in the User's Manual for the particular
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i960 model being used. Structure definitions for the
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i960 model being used. Structure definitions for the
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i960CA and i960HA PRCB and Control Table are provided
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i960CA and i960HA PRCB and Control Table are provided
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by including the file @code{rtems.h}.
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by including the file @code{rtems.h}.
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@table @code
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@table @code
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@item pretasking_hook
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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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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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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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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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This field may be NULL to indicate that the hook is not utilized.
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@item predriver_hook
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@item predriver_hook
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is the address of the user provided
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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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routine that is invoked immediately before the
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the device drivers and MPCI are initialized. RTEMS
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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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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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This field may be NULL to indicate that the hook is not utilized.
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@item postdriver_hook
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@item postdriver_hook
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is the address of the user provided
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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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routine that is invoked immediately after the
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the device drivers and MPCI are initialized. RTEMS
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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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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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This field may be NULL to indicate that the hook is not utilized.
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@item idle_task
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@item idle_task
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is the address of the optional user
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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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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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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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used. This field may be NULL to indicate that the default IDLE
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is to be used.
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is to be used.
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@item do_zero_of_workspace
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@item do_zero_of_workspace
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indicates whether RTEMS should
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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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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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TRUE, the Workspace is zeroed. Otherwise, it is not.
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@item idle_task_stack_size
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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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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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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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idle task's stack will be MINIMUM_STACK_SIZE in byte.
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@item interrupt_stack_size
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@item interrupt_stack_size
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is the size of the RTEMS
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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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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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as large as MINIMUM_STACK_SIZE.
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@item extra_mpci_receive_server_stack
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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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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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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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may require extra stack space on some targets.
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@item stack_allocate_hook
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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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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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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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must be provided as well.
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@item stack_free_hook
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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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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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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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must be provided as well.
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@item Prcb
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@item Prcb
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is the base address of the Processor Control Block. It
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is the base address of the Processor Control Block. It
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is primarily used by RTEMS to install interrupt handlers.
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is primarily used by RTEMS to install interrupt handlers.
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@end table
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@end table
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