readme

RTEMS (Real-Time Executive for Multiprocessor Systems) is a free open source real-time operating sys

#
#  $Id: README,v 1.1 1999/02/17 20:23:36 joel Exp $
#

#
# This package requires a version of GCC that supports the `-mcpu32' option.
#

#
# Please send any comments, improvements, or bug reports to:
#	W. Eric Norum
#	Saskatchewan Accelerator Laboratory
#	107 North Road
#	University of Saskatchewan
#	Saskatoon, Saskatchewan, CANADA
#	S7N 5C6
# [e-mail]
#

#
# This board support package works with several different versions of
# MC68360 systems.  The choice of hardware is made at the final link-edit
# phase by setting the Makefile CLAGS_LD definition appropriately.
#
# Decisions made at compile time include:
#	- If the CPU is a member of the 68040 family, the BSP is
#	  compiled for a generic 68040/68360 system as described
#	  in Chapter 9 of the MC68360 User's Manual.
#	- If the preprocessor symbol M68360_ATLAS_HSB is defined,
#	  the BSP is compiled for an Atlas HSB card.
#	- Otherwise, the BSP is compiled for a generic 68360 system
#	  as described in Chapter 9 of the MC68360 User's Manual.
#
# Decisions to be made a link-edit time are:
#     - The size of the memory allocator heap.  The default value is
#       64 kbytes.  If the network package is used the heap
#       should be at least 256 kbytes.  If your network is large, or
#       busy, the heap should be even larger.
#       To choose a heap size of 256 kbytes,
#	CFLAGS_LD += -Wl,--defsym -Wl,HeapSize=0x40000

BSP NAME:	    gen68360 or gen68360_040
BOARD:              Generic 68360 as described in Motorola MC68360 User's Manual
BOARD:              Atlas Computer Equipment Inc. High Speed Bridge (HSB)
BOARD:              Atlas Computer Equipment Inc. Advanced Communication Engine (ACE)
BOARD:              Arnewsh SBC360 68040/68360 card
BUS:                none
CPU FAMILY:         Motorola CPU32+, Motorola 68040
COPROCESSORS:       none
MODE:               not applicable

DEBUG MONITOR:      none (Hardware provides BDM)

PERIPHERALS
===========
TIMERS:             PIT, Watchdog, 4 general purpose, 16 RISC
  RESOLUTION:       one microsecond
SERIAL PORTS:       4 SCC, 2 SMC, 1 SPI
REAL-TIME CLOCK:
DMA:                Each serial port, 2 general purpose
VIDEO:              none
SCSI:               none
NETWORKING:         Ethernet on SCC1.

DRIVER INFORMATION
==================
CLOCK DRIVER:       Programmable Interval Timer
IOSUPP DRIVER:      Serial Management Controller 1
SHMSUPP:            none
TIMER DRIVER:       Timer 1

STDIO
=====
PORT:               SMC1
ELECTRICAL:         EIA-232 (if board supplies level shifter)
BAUD:               9600
BITS PER CHARACTER: 8
PARITY:             None
STOP BITS:          1

NOTES
=====

Board description
-----------------
clock rate:	25 MHz
bus width:	8-bit PROM, 32-bit DRAM
ROM:		To 1 MByte, 180 nsec (3 wait states), chip select 0
RAM:		1 to 16 MByte DRAM SIMM, 60 nsec (0 wait states), parity or nonparity

Host System
-----------
OPENSTEP 4.2 (Intel and Motorola), Solaris 2.5, Linux 2.0.29

Verification (Standalone 68360)
-------------------------------
Single processor tests:  Passed
Multi-processort tests:  not applicable
Timing tests:
	Context Switch

	context switch: self 10
	context switch: to another task 11
	context switch: no floating point contexts 40
	fp context switch: restore 1st FP task 41
	fp context switch: save initialized, restore initialized 14
	fp context switch: save idle, restore initialized 14
	fp context switch: save idle, restore idle 43

	Task Manager

	rtems_task_create 133
	rtems_task_ident 351
	rtems_task_start 77
	rtems_task_restart: calling task 93
	rtems_task_restart: suspended task -- returns to caller 90
	rtems_task_restart: blocked task -- returns to caller 120
	rtems_task_restart: ready task -- returns to caller 92
	rtems_task_restart: suspended task -- preempts caller 121
	rtems_task_restart: blocked task -- preempts caller 143
	rtems_task_restart: ready task -- preempts caller 138
	rtems_task_delete: calling task 158
	rtems_task_delete: suspended task 129
	rtems_task_delete: blocked task 134
	rtems_task_delete: ready task 136
	rtems_task_suspend: calling task 71
	rtems_task_suspend: returns to caller 47
	rtems_task_resume: task readied -- returns to caller 48
	rtems_task_resume: task readied -- preempts caller 67
	rtems_task_set_priority: obtain current priority 36
	rtems_task_set_priority: returns to caller 65
	rtems_task_set_priority: preempts caller 102
	rtems_task_mode: obtain current mode 13
	rtems_task_mode: no reschedule 15
	rtems_task_mode: reschedule -- returns to caller 22
	rtems_task_mode: reschedule -- preempts caller 61
	rtems_task_get_note 38
	rtems_task_set_note 37
	rtems_task_wake_after: yield -- returns to caller 22
	rtems_task_wake_after: yields -- preempts caller 56
	rtems_task_wake_when 110

	Interrupt Manager

	interrupt entry overhead: returns to nested interrupt 8
	interrupt entry overhead: returns to interrupted task 8
	interrupt entry overhead: returns to preempting task 8
	interrupt exit overhead: returns to nested interrupt 7
	interrupt exit overhead: returns to interrupted task 8
	interrupt exit overhead: returns to preempting task 52

	Clock Manager

	rtems_clock_set 82
	rtems_clock_get 2
	rtems_clock_tick 15

	Timer Manager

	rtems_timer_create 33
	rtems_timer_ident 343
	rtems_timer_delete: inactive 47
	rtems_timer_delete: active 50
	rtems_timer_fire_after: inactive 59
	rtems_timer_fire_after: active 63
	rtems_timer_fire_when: inactive 83
	rtems_timer_fire_when: active 83
	rtems_timer_reset: inactive 55
	rtems_timer_reset: active 58
	rtems_timer_cancel: inactive 35
	rtems_timer_cancel: active 38

	Semaphore Manager

	rtems_semaphore_create 62
	rtems_semaphore_ident 368
	rtems_semaphore_delete 61
	rtems_semaphore_obtain: available 42
	rtems_semaphore_obtain: not available -- NO_WAIT 42
	rtems_semaphore_obtain: not available -- caller blocks 105
	rtems_semaphore_release: no waiting tasks 46
	rtems_semaphore_release: task readied -- returns to caller 64
	rtems_semaphore_release: task readied -- preempts caller 84

	Message Queue Manager

	rtems_message_queue_create 240
	rtems_message_queue_ident 342
	rtems_message_queue_delete 79
	rtems_message_queue_send: no waiting tasks 93
	rtems_message_queue_send: task readied -- returns to caller 96
	rtems_message_queue_send: task readied -- preempts caller 116
	rtems_message_queue_urgent: no waiting tasks 93
	rtems_message_queue_urgent: task readied -- returns to caller 97
	rtems_message_queue_urgent: task readied -- preempts caller 117
	rtems_message_queue_broadcast: no waiting tasks 54
	rtems_message_queue_broadcast: task readied -- returns to caller 106
	rtems_message_queue_broadcast: task readied -- preempts caller 126
	rtems_message_queue_receive: available 79
	rtems_message_queue_receive: not available -- NO_WAIT 48
	rtems_message_queue_receive: not available -- caller blocks 111
	rtems_message_queue_flush: no messages flushed 35
	rtems_message_queue_flush: messages flushed 44

	Event Manager

	rtems_event_send: no task readied 30
	rtems_event_send: task readied -- returns to caller 59
	rtems_event_send: task readied -- preempts caller 81
	rtems_event_receive: obtain current events 1
	rtems_event_receive: available 34
	rtems_event_receive: not available -- NO_WAIT 31
	rtems_event_receive: not available -- caller blocks 84

	Signal Manager

	rtems_signal_catch 24
	rtems_signal_send: returns to caller 42
	rtems_signal_send: signal to self 47
	exit ASR overhead: returns to calling task 33
	exit ASR overhead: returns to preempting task 58

	Partition Manager

	rtems_partition_create 78
	rtems_partition_ident 342
	rtems_partition_delete 46
	rtems_partition_get_buffer: available 40
	rtems_partition_get_buffer: not available 39
	rtems_partition_return_buffer 47

	Region Manager

	rtems_region_create 65
	rtems_region_ident 349
	rtems_region_delete 45
	rtems_region_get_segment: available 55
	rtems_region_get_segment: not available -- NO_WAIT 52
	rtems_region_get_segment: not available -- caller blocks 119
	rtems_region_return_segment: no waiting tasks 57
	rtems_region_return_segment: task readied -- returns to caller 106
	rtems_region_return_segment: task readied -- preempts caller 127

	Dual-Ported Memory Manager

	rtems_port_create 40
	rtems_port_ident 342
	rtems_port_delete 44
	rtems_port_internal_to_external 32
	rtems_port_external_to_internal 32

	IO Manager

	rtems_io_initialize 4
	rtems_io_open 1
	rtems_io_close 1
	rtems_io_read 1
	rtems_io_write 1
	rtems_io_control 1

	Rate Monotonic Manager

	rtems_rate_monotonic_create 39
	rtems_rate_monotonic_ident 343
	rtems_rate_monotonic_cancel 43
	rtems_rate_monotonic_delete: active 54
	rtems_rate_monotonic_delete: inactive 52
	rtems_rate_monotonic_period: obtain status 37
	rtems_rate_monotonic_period: initiate period -- returns to caller 58
	rtems_rate_monotonic_period: conclude periods -- caller blocks 75

Porting
-------
This board support package is written for a 68360 system similar to that
described in chapter 9 of the Motorola MC68360 Quad Integrated Communication
Processor Users' Manual.  The salient features of this hardware are:

	25 MHz external clock
	DRAM address multiplexing provided by 68360
	8-bit 180nsec PROM to CS0*
	4 MBytes of 60 nsec parity DRAM (1Mx36) to RAS1*/CAS1*
	Console serial port on SMC1
	Ethernet interface on SCC1

The board support package has been tested with:
	A home-built 68360 board
	An ACE360A and an HSB board produced by:
		Atlas Computer Equipment
		703 Colina Lane
		Santa Barbara, CA 93103
	A 68040/68360 board (SBC360) produced by:
		Arnewsh Inc.
		P.O. Box 270352
		Fort Collins, CO 80527-0352