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Rev	Age	Author	Path	Log message
883	6662 d 11 h	jermar	/kernel/trunk/arch/sparc64/	sparc64 work. Switch console to framebuffer (needs proper detection and initialization). No native keyboard support, so far. Memory management trap handler fixes. Do not use OpenFirmware trap table anymore.
877	6664 d 3 h	jermar	/kernel/trunk/arch/sparc64/	Fixes in sparc64 preliminary TLB miss handler. Compute and insert identity mapping for kernel on the fly.
873	6664 d 11 h	jermar	/kernel/trunk/arch/sparc64/	sparc64 work. Add more MMU helper functions and make data TLB miss handler more verbose.
867	6666 d 8 h	jermar	/kernel/trunk/	Move OFW functionality of ppc32 memory_init to genarch so that the code can also be used by sparc64. sparc64 is now close to broken as it lacks functionality to provide identity mapping for the whole phyisical memory.
864	6666 d 23 h	jermar	/kernel/trunk/arch/sparc64/include/trap/	Add forgotten file.
863	6666 d 23 h	jermar	/kernel/trunk/arch/sparc64/	sparc64 work. Add initial TLB miss handlers.
861	6667 d 9 h	jermar	/kernel/trunk/arch/sparc64/include/	Add atomic_add() operation for sparc64.
860	6667 d 22 h	decky	/kernel/trunk/	indentation changes ppc32 fpu context save/restore ppc32 CPU version ppc32 memcpy
847	6671 d 4 h	jermar	/kernel/trunk/arch/sparc64/	Improve comments in start.S.
846	6671 d 6 h	jermar	/kernel/trunk/arch/sparc64/	sparc64 work. Relocate kernel to 4M.
815	6680 d 9 h	jermar	/kernel/trunk/	Fix sparc64 and ia64 to work with the changed frame allocator. Fix ppc32 to at least compile.
792	6682 d 8 h	jermar	/kernel/trunk/	Page hash table architectures now use generic hash table to manage mappings.
765	6686 d 1 h	jermar	/kernel/trunk/	Add PAGE_WIDTH to aid divisions by PAGE_SIZE.
763	6686 d 7 h	jermar	/kernel/trunk/	Modify frame.h to use shifting instead of multiplication and division. Define FRAME_WIDTH for all architectures.
760	6686 d 10 h	jermar	/kernel/trunk/	mips32 is not supposed to allocate page table. This is done by the generic code now. Remove PTL0 pointer as it is not needed. Remove GET_PTL0_ADDRESS from kernel. Update sparc64 comments in barrier.h.
758	6686 d 23 h	jermar	/kernel/trunk/arch/	sparc64 bugfix. When disabling IMMU and DMMU the kernel has to perform synchronization operation (e.g flush %r or membar #Sync instruction). There is no guarantee that the address contained in %r is in DTLB and therefore the flush instruction can fault. Normally this would be recognized and fixed by the OpenFirmware Fast Data MMU fault handler. However, this handler lives in virtually mapped memory and an attempt to execute there while the MMUs are disabled would result in a nested trap leading to error state. Replacing flush %r instruction with membar #Sync, wich is sufficient in this case, fixes this problem.
757	6687 d 2 h	jermar	/kernel/trunk/	Blacklist addresses between 0xa0000 and 0xfffff on ia64 for frame allocator. This area contains VGA text frame buffer and should be avoided. falloc2 test now passes on ia64.
756	6687 d 23 h	jermar	/kernel/trunk/	Memory management work. Remove the last (i.e. 'root') argument from page_mapping_insert() and page_mapping_find(). Page table address is now extracted from the first (i.e. 'as') argument. Add a lot of infrastructure to make the above possible. sparc64 is now broken, most likely because of insufficient identity mapping of physical memory.
753	6689 d 6 h	jermar	/kernel/trunk/	Convert ASID management of ia64 to ASID FIFO mechanism. 18-bit RIDs are supported.
746	6693 d 8 h	jermar	/kernel/trunk/	Page hash table modifications.
743	6695 d 1 h	jermar	/kernel/trunk/arch/	sparc64 work. 13 bits wide means the max value is 8191 and not 0x8191.
742	6695 d 1 h	jermar	/kernel/trunk/arch/	sparc64 work. Memory context (ASID) is, in fact, 13 bits (and not 12 bits) wide.
741	6695 d 2 h	jermar	/kernel/trunk/	Unlock address space prior TLB shootdown in get_asid() to unify the locking order among mips32, sparc64 and ia64. Add ASID_STEALING_ENABLED macro to disable the stealing part on ia64 in a clean way.
727	6700 d 0 h	jermar	/kernel/trunk/	New ASID management subsystem (initial work, more is required). Some TLB invalidation changes.
703	6706 d 10 h	jermar	/kernel/trunk/	Memory management work. - vm.* -> as.* (as like address space is, imho, more fitting) - Don't do TLB shootdown on vm_install(). Some architectures only need to call tlb_invalidate_asid(). - Don't allocate all frames for as_area in as_area_create(), but let them be allocated on-demand by as_page_fault(). - Add high-level page fault handler as_page_fault(). - Add as_area_load_mapping().
700	6709 d 9 h	jermar	/kernel/trunk/arch/sparc64/include/	Remove fmath.h
699	6709 d 9 h	jermar	/kernel/trunk/	Memory management work. Proto-interface and dummy implementation of generic page hash table subsytem.
691	6711 d 6 h	jermar	/kernel/trunk/arch/	Cleanup.
669	6720 d 0 h	jermar	/kernel/trunk/	sparc64 work. kconsole support. Add non-blocking ofw_getchar().
667	6721 d 3 h	jermar	/kernel/trunk/arch/sparc64/	sparc64 work. Rename saving_handler() to preemptible_handler() and fix it to make sparc64 kernel preemptive. Add two handlers for two fatal exceptions (i.e. instruction_access_exception and mem_address_not_aligned. Fix panic_printf() to not allocate its own register window.
666	6723 d 1 h	jermar	/kernel/trunk/	sparc64 work. Fix clean_window trap handler so that it clears output registers instead of input registers! Fix interrupt handlers to save global registers.
665	6723 d 11 h	jermar	/kernel/trunk/arch/sparc64/	sparc64 work. Tick interrupt support.
664	6724 d 21 h	jermar	/kernel/trunk/	sparc64 work. Interrupt Levels 1 - 15 serviced. Minor changes in the exc_* functions.
658	6728 d 11 h	jermar	/kernel/trunk/arch/sparc64/include/	sparc64 work. Add functions to read and write TICK and TICK_compare registers. Add types describing TICK and TICK_compare registers.
657	6728 d 23 h	jermar	/kernel/trunk/	sparc64 work. Context again. It turns out, according to SCD 2.4, that registers that didn't have to be saved were saved (%o1 - %o5) and registers that had to be saved were not saved (%i0 - %i5, %l0 - %l7).
650	6731 d 0 h	jermar	/kernel/trunk/	sparc64 work. Implement interrupt_disable(), interrupt_enable(), interrupt_restore() and interrupt_read() functions. Fix context save/restore to save/restore register %i7.
646	6732 d 0 h	jermar	/kernel/trunk/	Fix cpu_init(): frame_alloc() can return 0 as the valid address of block of frames. Do not signal error. sparc64 work. Reorganize kernel vs. userspace memory layout. Add panic_printf(). Turn dummy() into nop rather than into infinite loop.
640	6732 d 23 h	jermar	/kernel/trunk/	sparc64 work. CPU identification.
634	6734 d 12 h	jermar	/kernel/trunk/arch/sparc64/	sparc64 work. Better way of trap table organization. Kernel trap handlers now "stay" on addresses on wich they were linked.
632	6735 d 1 h	jermar	/kernel/trunk/arch/sparc64/	sparc64 work. Add trap_install_handler(). Use trap_install_handler() to install register window clean, spill and fill handlers.