forked from Imagelibrary/rtems
12838559c6
PR 405/bsps * bootloader/pci.c: Added support for configuring devices for pci busses > 0 * pci/pci.c, pci/pci.h: Added FixupPCI() to store vectors in the INTERRUPT_LINE register of pci devices any # of hops away from the host processor. * motorola/motorola.c, motorola/motorola.h: Added interrupt routing tables in support of FixupPCI. This is board-specific, each board will have to supply information for FixupPCI() to do anything for it. * startup/bspstart.c: Extended bat2 to cover entire PCI address space. * irq/irq.c, irq/irq.h: Added support for shared interrupts. Existing single hander vectors are undisturbed, a new function added to allow adding/removing handlers from a vector.
50 lines
1.7 KiB
Plaintext
50 lines
1.7 KiB
Plaintext
#
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# $Id$
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#
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The code in this directory has been taken WITH PERMISSION from
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Gabriel Paubert, paubert@iram.es. The main reason for having
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a separate bootloader for PreP compliant firmware is that the
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initial code is relocated by firmware at an unknow address
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(actually 0x5000 on motorola MCP750) and that as Gabriel I
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think having a relocatable bootloder code is a must.
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So the way of building a binary executable that can be booted via
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hard disk or network boot goes like this :
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- make a RTEMS executable,
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- put is as data section in the bootloder binary,
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- relink the loader (see make-exe macros for details),
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I would like to thank Gabriel for his support and his code.
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The original code can be found in form of a patch to official linux
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kernel at (I insist not vger ppc kernel or Imac ppc kernels!!) :
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<ftp://vlab1.iram.es/pub/linux-2.2/>
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After applying the patch, the code is located in a new directory
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called prepboot.
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(NB : note use ftp not netscape...)
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Note that the actual code differs a lot since Gabriel choose to use
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a CHRP compliant mapping instead of a Prep Mapping to save
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BATs. I had no time to upgrade the code to its new one allthough
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I agree it should be done...
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I have also splitted the original code to have a more modular
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design enabling to reuse code between the loader and RTEMS
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initialization (e.g printk, ...).
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Eric Valette (valette@crf.canon.fr)
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**************************************************
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2003/5/7, Greg Menke, gregory.menke@gsfc.nasa.gov
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Reworked the pci bus 0 initialization a little and added support for
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configuring an arbitrary number of other busses & their respective
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bridges. Also added support for configuring IO ranges below 0x10000,
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which I think is reasonable given this is a PowerPC bsp.
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