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2 Overview of a BSP
2.3 Components of a BSP
41
2
These macros must be defined before the configAll.h file is included. Note that
BSP_VERSION and BSP_REV should contain strings.
LOCAL_MEM_LOCAL_ADRS (Defined in config.h)
The start of the on-board memory area.
LOCAL_MEM_AUTOSIZE or LOCAL_MEM_SIZE (Defined in config.h)
Only one of these two macros is defined for a given BSP.
If defined,
LOCAL_MEM_SIZE defines the fixed (static) memory size.
If defined,
LOCAL_MEM_AUTOSIZE indicates that the BSP determines the
actual memory size when booting, and that no static size is assumed.
ROM_BASE_ADRS (Defined in config.h)
The ROM start address in hexadecimal form.
ROM_WARM_ADRS (Defined in config.h)
The warm boot entry address. This is usually defined as an offset from
ROM_TEXT_ADRS.
USER_RESERVED_MEM (Defined in config.h)
Size (in bytes) of the memory region reserved for application use. For more
information, see Wind River Technical Note #41. The default value is 0 for all
BSPs.
VMA_START (Optional. Defined in Makefile)
This macro is used for creating hex files (for example, bootrom.hex). The
default value is 0x00000000. If defined, it should be a hex address with a
leading 0x. In some BSPs, this macro is defined as follows:
VMA_START = 0x$(ROM_TEXT_ADRS)
NUM_TTY (Defined in config.h)
The number of TTY ports to be configured at boot time. The default value is 2.
Some additional architecture-specific macros may also be required in the makefile.
For example, the i960 architecture must be instructed as to where to link the initial
NOTE: The BSP version and revision must be included in the BSP README file
as well as in the config.h file. The definitions in these two files must agree.
!
CAUTION: Unless otherwise specified, the hexadecimal addresses in the macros in
Makefile must not include a leading 0x. The copies in config.h must include the
leading 0x.
- BSP DEVELOPER’S GUIDE 1
- U.S.): (800) 545-WIND 2
- Contents 3
- Contents 5
- Introduction 9
- BSP Developer’s Guide, 6.0 10
- 1.3 BSP Development Process 11
- 1.4 Terminology 12
- Overview of a BSP 13
- 2.2 Boot Sequence 15
- 2.2.1 Sequence Overview 16
- 2 Overview of a BSP 17
- Step 1: Execute romInit( ) 23
- Step 4: Execute usrInit( ) 25
- TCB) from the top 27
- 2.3 Components of a BSP 28
- USRCONFIG = usrConfig.c 29
- 2.3.2 Derived Files 36
- 2.3.4 Required Routines 40
- /* lock interrupts */ 46
- 2.3.5 Required Macros 47
- ROM_TEXT_ADRS. The offset 48
- 2.3.6 Optional Routines 50
- 2.4.1 BSP Debugging Methods 52
- 2.4.3 The Wind River IDE 56
- 2.4.5 Download Path 57
- 2.5 Avoiding Common Problems 61
- Porting a BSP to 63
- Custom Hardware 63
- 3.2.1 Initializing the Board 64
- 3.2.2 Initializing Memory 65
- LED Routines 70
- #undef INCLUDE_WDB_VIO 75
- 3.2.7 Interrupt Controllers 78
- 3.2.8 ISR Guidelines 78
- 3.2.9 DMA 78
- 3.2.11 Serial Drivers 79
- 3.3.2 Projects 81
- 3.3.3 Adding Other Timers 81
- 3.3.4 NVRAM 82
- 3.3.6 Boot ROMs 85
- FUNCPTR * pArg 89
- UINT * pArg 89
- 3.3 Finalizing Your BSP 101
- Generic Driver Introduction 110
- One-Shot Timer Examples 116
- Non-Volatile Memory 117
- Debugging Your BSP 123
- 4 Debugging Your BSP 127
- 4.2.3 Verifying RAM 129
- For example: 133
- 4.3.1 Symbols 134
- 4.3.2 Breakpoints 134
- Common Development Issues 139
- Image Locations 140
- A.3 Cache and MMU 141
- Timing Issues 142
- A.4 Reusing Unportable Code 143
- A.5 Volatile Variables 143
- Documentation Guidelines 145
- B.1 Introduction 146
- B.2 Written Style 146
- Use... Not 147
- B Documentation Guidelines 149
- Acronyms 152
- Board Names 153
- NAME Section 154
- B.4 Sections for target.ref 161
- B.5 Format and Style 163
- Ta b le B -5 Apigen Markup 166
- Component Input Output 170
- Command Syntax 174
- Board Diagrams 174
- B.6 Directives 175
- Directive Name Usage 176
- \IMAGE images/board.jpg 178
- \IMAGE images/switches.gif 178
- (apigen or refgen -mg) 182
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