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soc:2008:stefanha:journal:week7 [2008/07/09 08:06] stefanha |
soc:2008:stefanha:journal:week7 [2008/07/22 12:26] (current) stefanha |
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| ====== Stefan Hajnoczi: GDB Remote Debugging ====== | ====== Stefan Hajnoczi: GDB Remote Debugging ====== | ||
| - | ===== Week 6 ===== | + | ===== Week 7 ===== |
| **Milestones:** | **Milestones:** | ||
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| For some reason my test machine hangs instead of booting the next image. I tried a dummy NBP with an instruction to set the return type and an ''lret''. Perhaps my BIOS/PXE (Insyde + Intel BC + Broadcom UNDI) is buggy. | For some reason my test machine hangs instead of booting the next image. I tried a dummy NBP with an instruction to set the return type and an ''lret''. Perhaps my BIOS/PXE (Insyde + Intel BC + Broadcom UNDI) is buggy. | ||
| - | Next steps: | + | ==== Fri Jul 11 ==== |
| - | * [b44] Performance testing. | + | Git commit: |
| - | * [b44] Cleanup & testing. | + | * [[http://git.etherboot.org/?p=people/stefanha/gpxe.git;a=commit;h=3b375c3bfc0bf746bd43af55f63e2c69146b82d4|[prefix] Do int 18h if return stack is damaged]] |
| - | * [bzImage] Expand the heap size to the full 64K segment when loading a bzImage kernel with version 2.02 or higher. | + | |
| - | * [GDB] Real-mode remote debugging. | + | Just had a productive meeting with mdc and mcb30. I am still learning new things about gPXE and the world it lives in every week. |
| + | |||
| + | The b44 driver itself has been sitting still for a few weeks. The reason for this is that it requires changes to gPXE's memory management. Getting the driver working has turned into a journey through DMA mapping, gPXE's memory allocators (''malloc'' and ''umalloc''), hidden memory regions, and into the E820 memory map mangler. | ||
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| + | Today's meeting has brought me one step closer to what our memory management needs to look like in order to support devices with addressing limitations, like the BCM4401 NIC. | ||
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| + | ===== Next week ===== | ||
| + | On to [[.:week8|Week 8]]. | ||
