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CT60 and related things BBS
| Linux CT60 |
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Posted by: Didier Méquignon
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Apr,11.2004-11:37
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Hi,
The kernel 2.4.25 works on the CT60 but without SDRAM.
http://packages.debian.org/unstable/base/kernel-image-2.4.25-atari
I have tried to (re)compile the kernel...
The kernel 2.4.25 works on the CT60 with the SDRAM, but you need to change the line 266 inside the end of /arch/m68k/motorola.c, paging_init() during the test of
zones_sizes[0] = (mach_max_dma_address < (unsigned long)high_memory : mach_max_dma_address ? (unsigned long)high_memory);
by
zones_sizes[0] = (mach_max_dma_address < (unsigned long)high_memory : (mach_max_dma_address+1) ? (unsigned long)high_memory);
The linux documentation said zone(0) DMA = 16 MB, zone(1) NORMAL.
The kernel seems add the 1st 2 MB of SDRAM after the STRAM (14MB).
Before the modif I had 4095 pages for the zone(0) with a debug=par and this message:
BUG: wrong zone alignment , it will crash
Whithout this modif the kernel works only with the SDRAM (-t inside ataboot).
Now I have Zone(0): 4096 pages. Zone(1): 65024 pages.
I have also patched ataboot for get good value of STRAM and SDRAM.
You must load the kernel inside the STRAM with -s option inside ataboot.
Regards,
Didier.
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Linux CT60
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Didier Méquignon
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Apr,11.2004-11:37
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