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1783 6702 d 11 h jermar /boot/trunk/ Some 32-bit vs. 64-bit fixes.

Make the call to OpenFirmware client interface architecture dependent.
For instance and contrary to my previous experience, the sparc64 version of
'translate' method would not work reliably unless the Address Mask bit in the
PSTATE register is cleared during duration of the call.

sparc64 and ppc32 OpenFirmware seem to differ in details, for example, the above
mentioned method 'translate' signals success by setting the first return value
to -1 on sparc64 while on ppc32 the value is/stays (???) zero.		  
1764 6717 d 10 h jermar /boot/trunk/ Cleanup boot infrastructure: ppc32 (and elsewhere).  
1620 6736 d 15 h decky /boot/trunk/arch/ppc32/loader/ update boot loader API  
1478 6742 d 2 h decky /boot/trunk/ ppc32 bootloader debugging facility  
1372 6755 d 10 h decky /boot/trunk/arch/ppc32/loader/ remove obsolete BAT framebuffer mapping  
1369 6755 d 12 h decky /boot/trunk/arch/ppc32/ support for arbitrary number of boot components for ppc32  
1219 6781 d 9 h decky /boot/trunk/arch/ppc32/ ppc32: support for loading init  
1146 6801 d 17 h decky /boot/trunk/arch/ppc32/loader/ add instruction cache flush
align framebuffer on 128K boundary
change OFW calling method
make OFW code more compatible		  
1131 6810 d 13 h decky /boot/trunk/arch/ppc32/loader/ kernel boot API change  
1130 6810 d 13 h decky /boot/trunk/arch/ppc32/loader/ extend boot info  
1075 6817 d 19 h decky /boot/trunk/arch/ppc32/loader/ relocate boot loader structures if needed
(allowing to boot on stupid OFW implementations)		  
1068 6818 d 6 h decky /boot/trunk/arch/ppc32/loader/ proper ppc32 initial memory mapping  
1058 6818 d 13 h decky /boot/trunk/arch/ppc32/loader/ relocate kernel in real mode  
1022 6819 d 13 h decky /boot/trunk/arch/ppc32/loader/ ppc32: boot using real mode trampoline
setup segment registers so far		  
986 6820 d 15 h decky /boot/trunk/arch/ppc32/loader/ ppc32: support for exception vectors  
981 6820 d 17 h decky /boot/trunk/arch/ppc32/loader/ temporal CUDA (VIA 6805) mapping  
971 6820 d 20 h decky /boot/trunk/arch/ppc32/loader/ ppc32: move kernel one frame up  
969 6820 d 21 h decky /boot/trunk/arch/ppc32/loader/ map almost all physical memory
remap framebuffer to a different location		  
964 6820 d 23 h decky /boot/trunk/arch/ppc32/loader/ ofw code cleanup
get memory map from ofw		  
956 6821 d 12 h decky /boot/trunk/arch/ppc32/loader/ relocate ppc32 kernel above 2 GB  

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