using the bootstrap loader

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* * If * the VENDOR$ID returned is nonzero, * a board exists in the examined slot * then * If * VENDOR$ID matches BOARD$ID * then * If * INSTANCE is the desired instance of * BOARD$ID * then * return the iPSB$SLOT looping index to * indicate the slot number of BOARD$ID * else * else * else * If we have checked all board slots * then * Return the value OFFH as the iPSB$SLOT * parameter indicating the device * to boot from does not exist. * else * Loop back to beginning to check the next * board slot. * END DO * *END CODE: WRITING A CUSTOM FIRST-STAGE DRIVER Bootstrap Loader 5-37
WRITING A CUSTOM FIRST-STAGE DRIVER 5.6. CHANGING BS1.A86 OR BS1 MB2.A86 TO INCLUDE THE NEW FIRST-STAGE DRIVER 5-38 The first stage of the Bootstrap Loader obtains information about the devices and their associated device drivers from the Bootstrap Loader configuration file BS l.A86 or BS1MB2A86. To support a custom device driver, you must add to that file a %DEVICE macro for each unit on the device that your first-stage device driver supports. For example, if two flexible diskette drives are attached to the device, you must add two %DEVICE macros to the list (one for each drive). Chapter 3 describes the syntax of the %DEVICE macro. As an example, Figure 5-3 shows a portion of the BS l.A86 file that was changed to add %DEVICE macros for two units supported by a custom first-stage driver (changes to BS1MB2.A86 would occur similarly). The units have numbers 0 and 1, and their physical names are YZO and YZ1, respectively. The name of the custom driver device initialization procedure is NEWDEVICEINIT, and the name of the device read procedure is NEWDEVICEREAD. Arrows to the left of the figure show the added lines. name bsl $inc1ude(:fl:hsl.inc) %cpu(80386) ;iSBC 188/48 initialization of the iAPX 188 ; iAPX_186_INIT(y,Ofc38h, none , 80bbh,none,003bh) %device(bO, 0, deviceinit254, deviceread254) %device(baO, 0, deviceinit264, deviceread264) --> Xdevice(yzO, 0, newdeviceinit, newdeviceread) --> Xdevice(yzl, 1, newdeviceinit, newdeviceread) %end Figure 5-3. Modified BSl.A86 File Bootstrap Loader ( \ (
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iRMX® Bootstrap loader Reference M
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I \
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PREFACE Appendix B This appendix de
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Contents Chapter 3. Configuring the
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Contents Chapter 6. Writing a Custo
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1.1 INTRODUCTION OVERVIEW OF BOOTST
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1.2 THE STAGES OF THE BOOTSTRAP LOA
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Generic Third Stage OVERVIEW OF BOO
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OVERVIEW OF BOOTSTRAP LOADER OPERAT
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* OVERVIEW OF BOOTSTRAP LOADER OPER
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OVERVIEW OF BOOTSTRAP LOADER OPERAT
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USING THE BOOTSTRAP LOADER 2-2 When
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USING THE BOOTSTRAP LOADER 2-4 For
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USING THE BOOTSTRAP LOADER 2-6 Alth
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USING THE BOOTSTRAP LOADER * 2-8 NO
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CONFIGURING THE FIRST STAGE 3.1.1 F
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CONFIGURING THE FIRST STAGE 3-4 nam
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CONFIGURING THE FIRST STAGE 3-6 , ,
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CONFIGURING THE FIRST STAGE The ord
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CONFIGURING THE FIRST STAGE 3.2.3 %
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where: mpc$base$addr port$sep duty$
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3.2.7 %CONSOLE, %MANUAL, and %AUTO
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CONFIGURING THE FIRST STAGE • If
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The syntax of this macro is %CLEAR
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The syntax of the %SERIAL _ CHANNEL
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CONFIGURING THE FIRST STAGE flags A
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The syntax of the %DEVICE macro is
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CONFIGURING THE FIRST STAGE Table 3
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3.3 BSERR.A86 CONFIGURATION FILE CO
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3.3.4 %AGAIN Macro CONFIGURING THE
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3.4 DEVICE DRIVER CONFIGURATION FIL
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In the BMSC.A86 file, the default i
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CONFIGURING THE FIRST STAGE 3.4.6 %
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CONFIGURING THE FIRST STAGE def cla
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CONFIGURING THE FIRST STAGE In the
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CONFIGURING THE FIRST STAGE 3.4.11
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CONFIGURING THE FIRST STAGE 3-46 Mu
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The format for invoking the submit
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CONFIGURING THE THIRD STAGE 4.2 OVE
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CONFIGURING THE THIRD STAGE 4.3 BS3
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Page 124 and 125: Condition Codes E$OK BS$E$TRANSMISS
Page 126 and 127: END CODE; END SAMPLE_BS$RECEIVE; Co
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Page 163 and 164: ERROR HANDLING Table 7-1. Postmorte
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Page 168 and 169: AUTOMATIC BOOT DEVICE RECOGNITION A
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Page 172 and 173: PROMMING THE BOOTSTRAP B LOADER AND
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Page 176 and 177: %Again 3-29, 3-31 %Auto 3-15 %Auto
Page 178 and 179: BS$SEND 5-18, 5-19 BS$SEND$RSVP 5-1
Page 180 and 181: E Editing BSl.A86 3-8, 5-38 Error c
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