BSP Developer's Guide

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VxWorks 5.5 BSP Developer’s Guide #ifdef _WRS_GNU_VAR_MACROS /* GNU Syntax */ #define MY_MACRO(x, y, args...) printf (x, y, args) #else /* ANSI Syntax */ #define MY_MACRO(x, y, ...) printf (x, y, __VA_ARG__) #endif In the future, when the GNU toolchain does support the ANSI standard, the #ifdefs based on this macro can be removed from the code base. _WRS_ALIGNOF(item) This macro returns the alignment of the specified item, or item type, in byte units. Most structures have alignment values of 4, which is the normal alignment of a longword data value. Data items or types with greater alignment values return an appropriate alignment value, which is expected to be a power of two (1, 2, 4, 8, 16, and so on). _WRS_ALIGN_CHECK(ptr, type) This macro returns a boolean value, either TRUE or FALSE. A return of TRUE indicates that the pointer value is sufficiently aligned to be a valid pointer to the data item or type. The expected implementation is to examine the low-order bits of the pointer value to see whether it is a proper modulo of the alignment for the given type. _WRS_UNALIGNED_COPY(pSrc, pDst, size) This macro is a compiler-optimized version of the standard Wind River bcopy operation. It moves a data block from the source location to the destination location. This macro allows the compiler to optimize the copy operation based on the data types of the pointers and the size of the block. This macro is designed to be used in high-performance situations; the size of the block is expected to be small. Misuse of the macro for other situations should be avoided. 170
8 Writing Portable C Code 8.2 Tool Implementation This section discusses how the current VxWorks runtime code is organized to facilitate the addition and maintenance of new compiler tools. 8.2.1 New Tool Macros File The definition of the new tool-based macros must be placed into the compilation units. This has been achieved by modifying the target/h/vxWorks.h file to include a new toolMacros.h file. This file defines the new macros, and any other tool-based options, that apply globally to run-time compilations. All run-time compiled files must include vxWorks.h so that the new tool macro definitions are also included. 8 8.2.2 New Tool Directories Each toolchain provides the toolMacros.h file in a separate directory. Changes have been made in vxWorks.h to find the toolMacros.h file based on the preprocessor variable TOOL_FAMILY. For backward compatibility, if TOOL_FAMILY is not explicitly defined, its value is generated from the value of the build macro TOOL. This new toolchain-specific directory structure is intended to make it easy for all tool-related files to be located in a common directory separate from other tool system files. It also makes it unnecessary to modify any common files in the system just to add a new tool system. Add the new tool directory target/h/tool/newTool and then perform a system build; this triggers the system to reanalyze all toolchains and rebuild the toolchain database. 8.2.3 BSP Makefile Changes All VxWorks 5.5 (Tornado 2.2) BSP makefiles require modification to replace the old make tool include file path with the new tool-based path. For this release, all changes are made to the platform release files. Comment out the following lines from each BSP makefile by inserting a # in front of them. The remaining include lines pull in all the needed make files. #include $(TGT_DIR)/h/make/make.$(CPU)$(TOOL) #include $(TGT_DIR)/h/make/defs.$(WIND_HOST_TYPE) #include $(TGT_DIR)/h/make/rules.$(WIND_HOST_TYPE) 171
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VxWorks® 5.5 BSP DEVELOPER’S GUI
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1 Overview ........................
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Contents 1 Overview ...............
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Contents 3.6.5 Cache, MMU, and DMA
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Contents Memory-Mapped Chips ......
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Contents 7.3.3 System Configuration
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Contents F Generic Drivers ........
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Contents Stopping the Driver Withou
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1 Overview 1.1 Introduction One str
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1 Overview ■ New Drivers Many new
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1 Overview Included with Tornado (n
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1 Overview ■ ■ ■ ■ ■ ■
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1 Overview Table 1-1 Font Usage for
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2 BSP Organization 2.1 Introduction
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2 BSP Organization Files in the tar
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2 BSP Organization Files in the tar
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2 BSP Organization Version 1.0 BSPs
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2 BSP Organization SM_MEM_SIZE The
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2 BSP Organization For boards witho
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2 BSP Organization PCI_MSTR_IO_LOCA
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2 BSP Organization The entry point
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2 BSP Organization target.nr The fi
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2 BSP Organization bootrom This fil
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2 BSP Organization sysSerialHwInit(
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2 BSP Organization The Motorola M68
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2 BSP Organization Many VxWorks fac
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2 BSP Organization further board in
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2 BSP Organization can have very un
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3 Creating a New BSP 3.1 Introducti
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3 Creating a New BSP 3.2 Setting Up
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3 Creating a New BSP Makefile At a
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3 Creating a New BSP char * sysBspR
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3 Creating a New BSP ... #endif } T
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3 Creating a New BSP int dummy; ...
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3 Creating a New BSP To find the so
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3 Creating a New BSP ■ It has a V
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3 Creating a New BSP 3.6.7 SCSI VxW
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4 Hardware Guidelines 4.1 Introduct
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4 Hardware Guidelines Higher-level
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4 Hardware Guidelines Such dedicate
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4 Hardware Guidelines selected from
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4 Hardware Guidelines Hardware Inte
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4 Hardware Guidelines 4.4.2 System
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4 Hardware Guidelines 4.4.13 Parall
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4 Hardware Guidelines 0x10000, /* 6
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4 Hardware Guidelines The following
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5 Driver Guidelines 5.1 Introductio
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5 Driver Guidelines Maintenance and
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5 Driver Guidelines word addresses.
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5 Driver Guidelines 5.4 Design Guid
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5 Driver Guidelines Per-Device Data
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5 Driver Guidelines To fix this sit
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5 Driver Guidelines block are more
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5 Driver Guidelines 5.8 Driver Use
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5 Driver Guidelines ■ ■ Memory
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5 Driver Guidelines The level of ca
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5 Driver Guidelines cache for the d
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6 Components 6.1 Introduction Torna
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6 Components 6.2 Component Descript
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6 Components ■ User Presentation.
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6 Components Folder FOLDER_ANSI { N
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C Upgrading a BSP for the VxWorks N
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D VxWorks Boot Sequence Table D-1 d
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D VxWorks Boot Sequence Table D-1 V
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E Component Language E.1 Component
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E Component Language REQUIRES r1 r2
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E Component Language FOLDER_WINDVIE
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E Component Language initialization
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E Component Language INCLUDE_MMU_BA
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E Component Language INCLUDE_NETWOR
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E Component Language INCLUDE_WDB_ME
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F Generic Drivers F.1 Introduction
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F Generic Drivers CONSOLE_TTY This
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F Generic Drivers Define SIO_CALLBA
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F Generic Drivers NV_RAM_SIZE Defin
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F Generic Drivers F.10 PCI Bus The
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G Upgrading 4.3 BSD Network Drivers
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H Implementing a MUX-Based Network
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I Writing a SCSI-2 Device Driver I.
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J BSP Validation Test Suite Referen
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K BSP Validation Checklists This ap
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K BSP Validation Checklists BSP Val
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K BSP Validation Checklists 7. Veri
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K BSP Validation Checklists 2. If t
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K BSP Validation Checklists Validat
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K BSP Validation Checklists Manufac
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K BSP Validation Checklists Manufac
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L Refgen NOTE: In Tornado 1.0.1 and
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L Refgen * SYNOPSIS * \cs * void xx
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L Refgen Yields output approximatel
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L Refgen EXAMPLE INCLUDES SEE ALSO
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M BSP Product Contents When you are
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M BSP Product Contents Do not inclu
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Index A abort button 82 addressing
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Index clocks see also individual cl
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Index naming conventions 95 perform
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Index INCLUDE_USR_APPL 38 INCLUDE_V
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Index network drivers 58 network in
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Index scsiCtrlLib 324 scsiDirectLib
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Index testing, validation 139-158 s
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