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authorJoel Sherrill <joel.sherrill@OARcorp.com>1998-10-19 19:24:43 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1998-10-19 19:24:43 +0000
commit6a912a1e8d920f188b6b7111545c8b2b39716695 (patch)
tree05b9e210bad2f892b5e5f549f18a07417628c41e /doc/supplements/powerpc/cputable.texi
parentRenamed cpumodel.texi to cpumodel.t. (diff)
downloadrtems-6a912a1e8d920f188b6b7111545c8b2b39716695.tar.bz2
Renamed cputable.texi to cputable.t.
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-@c
-@c COPYRIGHT (c) 1988-1998.
-@c On-Line Applications Research Corporation (OAR).
-@c All rights reserved.
-@c
-@c $Id$
-@c
-
-@ifinfo
-@node Processor Dependent Information Table, Processor Dependent Information Table Introduction, Board Support Packages Processor Initialization, Top
-@end ifinfo
-@chapter Processor Dependent Information Table
-@ifinfo
-@menu
-* Processor Dependent Information Table Introduction::
-* Processor Dependent Information Table CPU Dependent Information Table::
-@end menu
-@end ifinfo
-
-@ifinfo
-@node Processor Dependent Information Table Introduction, Processor Dependent Information Table CPU Dependent Information Table, Processor Dependent Information Table, Processor Dependent Information Table
-@end ifinfo
-@section Introduction
-
-Any highly processor dependent information required
-to describe a processor to RTEMS is provided in the CPU
-Dependent Information Table. This table is not required for all
-processors supported by RTEMS. This chapter describes the
-contents, if any, for a particular processor type.
-
-@ifinfo
-@node Processor Dependent Information Table CPU Dependent Information Table, Memory Requirements, Processor Dependent Information Table Introduction, Processor Dependent Information Table
-@end ifinfo
-@section CPU Dependent Information Table
-
-The PowerPC version of the RTEMS CPU Dependent
-Information Table is given by the C structure definition is
-shown below:
-
-@example
-typedef struct @{
- void (*pretasking_hook)( void );
- void (*predriver_hook)( void );
- void (*postdriver_hook)( void );
- void (*idle_task)( void );
- boolean do_zero_of_workspace;
- unsigned32 idle_task_stack_size;
- unsigned32 interrupt_stack_size;
- unsigned32 extra_mpci_receive_server_stack;
- void * (*stack_allocate_hook)( unsigned32 );
- void (*stack_free_hook)( void* );
- /* end of fields required on all CPUs */
-
- unsigned32 clicks_per_usec; /* Timer clicks per microsecond */
- void (*spurious_handler)(unsigned32 vector, CPU_Interrupt_frame *);
- boolean exceptions_in_RAM; /* TRUE if in RAM */
-
-#if defined(ppc403)
- unsigned32 serial_per_sec; /* Serial clocks per second */
- boolean serial_external_clock;
- boolean serial_xon_xoff;
- boolean serial_cts_rts;
- unsigned32 serial_rate;
- unsigned32 timer_average_overhead; /* in ticks */
- unsigned32 timer_least_valid; /* Least valid number from timer */
-#endif
-@};
-@end example
-
-@table @code
-@item pretasking_hook
-is the address of the
-user provided routine which is invoked once RTEMS initialization
-is complete but before interrupts and tasking are enabled. This
-field may be NULL to indicate that the hook is not utilized.
-
-@item predriver_hook
-is the address of the user provided
-routine which is invoked with tasking enabled immediately before
-the MPCI and device drivers are initialized. RTEMS
-initialization is complete, interrupts and tasking are enabled,
-but no device drivers are initialized. This field may be NULL to
-indicate that the hook is not utilized.
-
-@item postdriver_hook
-is the address of the user provided
-routine which is invoked with tasking enabled immediately after
-the MPCI and device drivers are initialized. RTEMS
-initialization is complete, interrupts and tasking are enabled,
-and the device drivers are initialized. This field may be NULL
-to indicate that the hook is not utilized.
-
-@item idle_task
-is the address of the optional user
-provided routine which is used as the system's IDLE task. If
-this field is not NULL, then the RTEMS default IDLE task is not
-used. This field may be NULL to indicate that the default IDLE
-is to be used.
-
-@item do_zero_of_workspace
-indicates whether RTEMS should
-zero the Workspace as part of its initialization. If set to
-TRUE, the Workspace is zeroed. Otherwise, it is not.
-
-@item idle_task_stack_size
-is the size of the RTEMS idle task stack in bytes.
-If this number is less than MINIMUM_STACK_SIZE, then the
-idle task's stack will be MINIMUM_STACK_SIZE in byte.
-
-@item interrupt_stack_size
-is the size of the RTEMS allocated interrupt stack in bytes.
-This value must be at least as large as MINIMUM_STACK_SIZE.
-
-@item extra_mpci_receive_server_stack
-is the extra stack space allocated for the RTEMS MPCI receive server task
-in bytes. The MPCI receive server may invoke nearly all directives and
-may require extra stack space on some targets.
-
-@item stack_allocate_hook
-is the address of the optional user provided routine which allocates
-memory for task stacks. If this hook is not NULL, then a stack_free_hook
-must be provided as well.
-
-@item stack_free_hook
-is the address of the optional user provided routine which frees
-memory for task stacks. If this hook is not NULL, then a stack_allocate_hook
-must be provided as well.
-
-@item clicks_per_usec
-is the number of decrementer interupts that occur each microsecond.
-
-@item spurious_handler
-is the address of the
-routine which is invoked when a spurious interrupt occurs.
-
-@item exceptions_in_RAM
-indicates whether the exception vectors are located in RAM or ROM. If
-they are located in RAM dynamic vector installation occurs, otherwise
-it does not.
-
-@item serial_per_sec
-is a PPC403 specific field which specifies the number of clock
-ticks per second for the PPC403 serial timer.
-
-@item serial_rate
-is a PPC403 specific field which specifies the baud rate for the
-PPC403 serial port.
-
-@item serial_external_clock
-is a PPC403 specific field which indicates whether or not to mask in a 0x2 into
-the Input/Output Configuration Register (IOCR) during initialization of the
-PPC403 console. (NOTE: This bit is defined as "reserved" 6-12?)
-
-@item serial_xon_xoff
-is a PPC403 specific field which indicates whether or not
-XON/XOFF flow control is supported for the PPC403 serial port.
-
-@item serial_cts_rts
-is a PPC403 specific field which indicates whether or not to set the
-least significant bit of the Input/Output Configuration Register
-(IOCR) during initialization of the PPC403 console. (NOTE: This
-bit is defined as "reserved" 6-12?)
-
-@item timer_average_overhead
-is a PPC403 specific field which specifies the average number of overhead ticks that occur on the PPC403 timer.
-
-@item timer_least_valid
-is a PPC403 specific field which specifies the maximum valid PPC403 timer value.
-
-@end table
-