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1837 6555 d 13 h jermar /trunk/ Support 24bpp framebuffers with 4 pixelbytes (each pixel aligned on 32-bits).

At least on sparc64, the OpenFirmware linebytes property specifies the number
of pixels between consecutive scan lines of the display. Fix scanilne calculation,
including possible alignment.

Add note to 8bpp pixel functions pointing out drawbacks of that mode.		  
1836 6557 d 10 h decky /trunk/kernel/arch/xen32/src/ coding style change  
1834 6557 d 21 h decky /trunk/kernel/arch/xen32/src/ xen32: fix initial stack  
1833 6557 d 21 h decky /trunk/kernel/ more sophisticated initial stack handling  
1832 6557 d 22 h decky /trunk/kernel/arch/xen32/ remap console page  
1831 6557 d 22 h decky /trunk/kernel/arch/xen32/ xen32: proper virtual traps, domU asynchronous console  
1830 6558 d 0 h decky /trunk/kernel/arch/xen32/ xen32: enable/disable interrupts  
1829 6558 d 1 h decky /trunk/kernel/arch/xen32/ xen32: initialize virtual IDT  
1828 6558 d 2 h decky /trunk/kernel/arch/xen32/ xen32: fork proc, get to the console (w/o preemption)  
1827 6558 d 2 h decky /trunk/kernel/arch/xen32/src/ print memory map  
1824 6558 d 4 h decky /trunk/kernel/arch/xen32/ xen32: use writable page tables, cleanup mm  
1823 6558 d 6 h jermar /trunk/kernel/arch/sparc64/ sparc64 work.
Dump take_over_tlb_and_tt() and add its assembly language replacement.		  
1822 6558 d 10 h jermar /trunk/ sparc64 work.
1. Formatting fixes.
2. When writing to DMMU ASI's, simple membar() can be used in place of flush().
3. Substantial changes in the way the TLB is taken over.
4. Remove unneeded functions.

This is the first revision that also runs on a real world Ultra 5 with UltraSPARC IIi
processor.

Note that 3. needs further work as the current implementation depends on the fact
that the compiler will use registers for local variables in take_over_tlb_and_tt().
Rewrite of that function into assembly is to follow.		  
1821 6560 d 6 h decky /trunk/kernel/arch/xen32/ xen32 cleanup  
1818 6565 d 1 h decky /trunk/kernel/ make burst updates  
1817 6565 d 21 h decky /trunk/kernel/arch/ xen32 work: create identity mapping for the main memory zone,
make several dummy modifications to get to the banner		  
1816 6566 d 5 h decky /trunk/kernel/ xen memory initialization  
1815 6566 d 7 h decky /trunk/kernel/arch/xen32/src/ fork drivers  
1814 6566 d 7 h decky /trunk/kernel/arch/xen32/include/ fork drivers  
1813 6566 d 7 h decky /trunk/kernel/arch/xen32/ xen32 hypervisor interface  

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