bdi
GDB
for BDI3000 (QorIQ P3/P4/P5)
User Manual
27
© Copyright 1997-2012 by ABATRON AG Switzerland
V 1.03
REGLIST list
This parameter defines the transferred GDB registers packet. By default
STD and FPR are read and transferred in 32-bit mode. The following
names are use to select a register group and register size:
STD
The standard register block. The FP registers are not
read from the target. Placeholders are transferred.
FPR
The floating point registers are read and transferred.
64BIT
The register packet is sent as expected by GDB for a 64-
bit PowerPC target.
Example:
REGLIST STD ; standard registers in 32-bit mode
REGLIST STD FPR 64BIT ;use 64-bit mode
Daisy chained JTAG devices:
The BDI can also handle systems with multiple devices connected to the JTAG scan chain. In order
to put the other devices into BYPASS mode and to count for the additional bypass registers, the BDI
needs some information about the scan chain layout. Enter the number (count) and total instruction
register (irlen) length of the devices present before the PowerPC chip (Predecessor). Enter the ap-
propriate information also for the devices following the PowerPC chip (Successor):
SCANPRED count irlen
This value gives the BDI information about JTAG devices present before
the PowerPC chip in the JTAG scan chain.
count
The number of preceding devices
irlen
The sum of the length of all preceding instruction regis-
ters (IR).
Example:
SCANPRED 1 8 ; one device with an IR length of 8
SCANSUCC count irlen This value gives the BDI information about JTAG devices present after the
PowerPC chip in the JTAG scan chain.
count
The number of succeeding devices
irlen
The sum of the length of all succeeding instruction reg-
isters (IR).
Example:
SCANSUCC 2 12 ; two device with an IR length of 8+4
Overriding Reset Configuration Word (RCW):
The BDI supports overriding the RCW Source and also overriding individual RCW values. If there is
no valid RCW present at the currently via pin selected RCW Source a Hard-coded RCW should be
selected. Never override the PLL configuration in RCW[0]-RCW[3] !
RCWSRC source
Defines a new RCW Source to be used.
source
The RCW Source number (0x00 ... 0x1F)
Example:
RCWSRC 0x18 ;Hard-Coded RCW 1_1000
RCWOVR index data
Override the value of an individual 32-bit RCW.
index
The RCW index (4 ... 15)
data
The new RCW value
Example:
RCWOVR 11 0x00830000 ;RCW bits 352-383
