summaryrefslogtreecommitdiffstats
path: root/doc/supplements/powerpc
diff options
context:
space:
mode:
authorJoel Sherrill <joel.sherrill@OARcorp.com>1998-10-19 19:24:40 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1998-10-19 19:24:40 +0000
commit915d502831abcabe5a8210813c229347e36b5199 (patch)
tree59e8f041e7df8fc49f0c1af8df11eb708ea40657 /doc/supplements/powerpc
parentRenamed preface.texi to preface.t. (diff)
downloadrtems-915d502831abcabe5a8210813c229347e36b5199.tar.bz2
Renamed bsp.texi to bsp.t.
Diffstat (limited to 'doc/supplements/powerpc')
-rw-r--r--doc/supplements/powerpc/bsp.texi95
1 files changed, 0 insertions, 95 deletions
diff --git a/doc/supplements/powerpc/bsp.texi b/doc/supplements/powerpc/bsp.texi
deleted file mode 100644
index 015f7347e0..0000000000
--- a/doc/supplements/powerpc/bsp.texi
+++ /dev/null
@@ -1,95 +0,0 @@
-@c
-@c COPYRIGHT (c) 1988-1998.
-@c On-Line Applications Research Corporation (OAR).
-@c All rights reserved.
-@c
-@c $Id$
-@c
-
-@ifinfo
-@node Board Support Packages, Board Support Packages Introduction, Default Fatal Error Processing Default Fatal Error Handler Operations, Top
-@end ifinfo
-@chapter Board Support Packages
-@ifinfo
-@menu
-* Board Support Packages Introduction::
-* Board Support Packages System Reset::
-* Board Support Packages Processor Initialization::
-@end menu
-@end ifinfo
-
-@ifinfo
-@node Board Support Packages Introduction, Board Support Packages System Reset, Board Support Packages, Board Support Packages
-@end ifinfo
-@section Introduction
-
-An RTEMS Board Support Package (BSP) must be designed
-to support a particular processor and target board combination.
-This chapter presents a discussion of PowerPC specific BSP issues.
-For more information on developing a BSP, refer to the chapter
-titled Board Support Packages in the RTEMS
-Applications User's Guide.
-
-@ifinfo
-@node Board Support Packages System Reset, Board Support Packages Processor Initialization, Board Support Packages Introduction, Board Support Packages
-@end ifinfo
-@section System Reset
-
-An RTEMS based application is initiated or
-re-initiated when the PowerPC processor is reset. The PowerPC
-architecture defines a Reset Exception, but leaves the
-details of the CPU state as implementation specific. Please
-refer to the User's Manual for the CPU model in question.
-
-In general, at power-up the PowerPC begin execution at address
-0xFFF00100 in supervisor mode with all exceptions disabled. For
-soft resets, the CPU will vector to either 0xFFF00100 or 0x00000100
-depending upon the setting of the Exception Prefix bit in the MSR.
-If during a soft reset, a Machine Check Exception occurs, then the
-CPU may execute a hard reset.
-
-@ifinfo
-@node Board Support Packages Processor Initialization, Processor Dependent Information Table, Board Support Packages System Reset, Board Support Packages
-@end ifinfo
-@section Processor Initialization
-
-It is the responsibility of the application's
-initialization code to initialize the CPU and board
-to a quiescent state before invoking the @code{rtems_initialize_executive}
-directive. It is recommended that the BSP utilize the @code{predriver_hook}
-to install default handlers for all exceptions. These default handlers
-may be overwritten as various device drivers and subsystems install
-their own exception handlers. Upon completion of RTEMS executive
-initialization, all interrupts are enabled.
-
-If this PowerPC implementation supports on-chip caching
-and this is to be utilized, then it should be enabled during the
-reset application initialization code. On-chip caching has been
-observed to prevent some emulators from working properly, so it
-may be necessary to run with caching disabled to use these emulators.
-
-In addition to the requirements described in the
-@b{Board Support Packages} chapter of the @b{@value{LANGUAGE}
-Applications User's Manual} for the reset code
-which is executed before the call to @code{rtems_initialize_executive},
-the PowrePC version has the following specific requirements:
-
-@itemize @bullet
-@item Must leave the PR bit of the Machine State Register (MSR) set
-to 0 so the PowerPC remains in the supervisor state.
-
-@item Must set stack pointer (sp or r1) such that a minimum stack
-size of MINIMUM_STACK_SIZE bytes is provided for the
-@code{rtems_initialize_executive} directive.
-
-@item Must disable all external interrupts (i.e. clear the EI (EE)
-bit of the machine state register).
-
-@item Must enable traps so window overflow and underflow
-conditions can be properly handled.
-
-@item Must initialize the PowerPC's initial Exception Table with default
-handlers.
-
-@end itemize
-