Lines Matching +full:auto +full:- +full:boot
2 Using physical DMA provided by OHCI-1394 FireWire controllers for debugging
6 ------------
9 to the OHCI-1394 specification which defines the controller to be a PCI
12 PCI-Bus master DMA after applying filters defined by the OHCI-1394 driver.
15 ask the OHCI-1394 controller to perform read and write requests on
28 hardware such as x86, x86-64 and PowerPC.
34 Together with a early initialization of the OHCI-1394 controller for debugging,
36 buffer on to debug early boot problems in areas like ACPI where the system
37 fails to boot and other means for debugging (serial port) are either not
41 -------
43 The firewire-ohci driver in drivers/firewire uses filtered physical
47 Because the firewire-ohci driver depends on the PCI enumeration to be
53 Remote debugging over FireWire early on boot) and pass the parameter
54 "ohci1394_dma=early" to the recompiled kernel on boot.
57 -----
59 firescope - Originally developed by Benjamin Herrenschmidt, Andi Kleen ported
63 Bernhard Kaindl enhanced firescope to support accessing 64-bit machines
64 from 32-bit firescope and vice versa:
65 - http://v3.sk/~lkundrak/firescope/
67 and he implemented fast system dump (alpha version - read README.txt):
68 - http://halobates.de/firewire/firedump-0.1.tar.bz2
72 - http://halobates.de/firewire/fireproxy-0.33.tar.bz2
74 The latest version of this gdb proxy (fireproxy-0.34) can communicate (not
75 yet stable) with kgdb over an memory-based communication module (kgdbom).
78 ---------------
80 The OHCI-1394 specification regulates that the OHCI-1394 controller must
84 interrupts are disabled and where no polling of the OHCI-1394 controller
89 Step-by-step instructions for using firescope with early OHCI initialization:
93 Load the firewire-ohci module and check your kernel logs.
100 CardBus and even some Express cards which are fully compliant to OHCI-1394
113 stable connection and has matching connectors (there are small 4-pin and
114 large 6-pin FireWire ports) will do.
132 ---------
135 [Ctrl-T] choose target
136 [Ctrl-H] this menu
137 [Ctrl-Q] quit
139 ------> Press Ctrl-T now, the output should be similar to:
147 4) Prepare for debugging with early OHCI-1394 initialization:
152 (Kernel hacking: Provide code for enabling DMA over FireWire early on boot)
162 With the FireWire cable connected, the OHCI-1394 driver on the debugging
166 Then, on the debugging host, run firescope, for example by using -A::
168 firescope -A System.map-of-debug-target-kernel
170 Note: -A automatically attaches to the first non-local node. It only works
173 After having attached to the debug target, press Ctrl-D to view the
174 complete printk buffer or Ctrl-U to enter auto update mode and get an
177 Call "firescope -h" to get more information on firescope's options.
180 -----
184 FireWire is a trademark of Apple Inc. - for more information please refer to: