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Booting
vided host boot kernel, the host must reinitialize the TigerSHARC
processor's AutoDMA
cess. Here are two options available to the user:
1. As described in Engineer-to-Engineer Note EE-174: TigerSHARC
processor Boot Loader Kernels Operation, disable the active
AutoDMA
fers, re-enable the
normal-word transfers during the entire boot process.
2. The host device has burst transfer capability and burst transfers are
desired during the entire boot process. The provided boot loader
kernel must be modified and rebuilt by the user to provide burst
transfer support.
!
If the system's host device does not have burst transfer capability,
quad-word access are not be possible.
!
The TigerSHARC's AUTODMAs are initialized for quad-word
transfers. If the host does not have control over the TigerSHARC's
BRST signal, it cannot perform quad-word transfers to the
AUTODMAs. Such a host requires a patch that reprograms the
AUTODMA to accept normal word transfers prior to initiating the
booting process.
For complete details on the patch and operation of the boot loader kernels
provided by Analog Devices, refer to the Engineer-to-Engineer Note
EE-174: ADSP-TS101 Boot Loader Kernels Operation.
Link Port Boot
This section describes how booting from a link port is performed.
10-24
for normal-word accesses prior to the boot pro-
TCB
, reconfigure the
TCB
and proceed with host boot using
TCB
ADSP-TS101 TigerSHARC Processor
to perform normal-word trans-
TCB
Hardware Reference
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