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Rev Age Author Path Log message Diff
3993 5561 d 10 h rimsky /branches/sparc/kernel/ Implemented preemptible trap handler for userspace (including syscalls - did not forget enabling interrupts for them) and the ralated stuff. Implemented handlers of instruction/data MMU miss/protection. Now some userspace tasks are run; there are, however, still some bugs causing unexpected data MMU misses.  
3664 5650 d 10 h rimsky /branches/sparc/ Added some SunBlade 1500 stuff (part of it is just temporary - e.g. the new visual). Some small fixes and enhancements.  
3593 5665 d 10 h rimsky /branches/sparc/ Merged latest trunk changes into sparc branch.  
3479 5714 d 18 h rimsky /branches/sparc/ Names containing 'UPA' replaced with strings containing more general 'ICBUS'. SMART_FIRMWARE option replaced with CPU autodetection + new option CONFIG_A_OUT_ISOFS_B.  
3477 5718 d 13 h rimsky /branches/sparc/kernel/arch/sparc64/ comments  
3343 5755 d 16 h decky /branches/sparc/ add sparc branch  
3071 5832 d 18 h decky /trunk/kernel/ reflect changes in generic code
proper formatting directives
coding style		  
2089 6324 d 19 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes		  
2082 6330 d 19 h decky /trunk/ __asm__ __volatile__ -> asm volatile  
2071 6335 d 12 h jermar /trunk/ (c) versus (C)  
2068 6342 d 19 h jermar /trunk/kernel/ Formatting and indentation fixes.  
1911 6438 d 10 h jermar /trunk/kernel/ Add support for interrupt mapping in the Sabre PCI controller.
Add support for PCI and EBUS interrupt mapping via the OpenFirmware device tree.
Unfortunatelly, the code is not capable enough to earn single ns16550 interrupt.
I suspect something needs to be enabled in the EBUS registers.		  
1899 6448 d 20 h jermar /trunk/ sparc64 work:
- Loader now starts all processors.
- Kernel halts all but the bootstrup processor for now.
- Read clock-frequency from the respective processor node in the device tree		  
1885 6461 d 0 h jermar /trunk/kernel/arch/sparc64/include/ On sparc64, get_stack_base() must use the unbiased %sp (i.e. %sp + 2047).  
1882 6461 d 19 h jermar /trunk/kernel/ Support for sparc64 FPU context.  
1881 6462 d 20 h jermar /trunk/ sparc64 work:
- find a CPU node and read its clock_frequency attribute
- implement asm_delay_loop()
- set TICK_COMPARE register according to processor frequency
- small improvements at random places

OpenFirmware work:
- two new functions for walking the device tree

Generic boot loader work:
- added basic string functions

Usual pile of indentation and formatting fixes.		  
1880 6464 d 11 h jermar /trunk/ Small improvements here and there.  
1865 6470 d 13 h jermar /trunk/kernel/ sparc64 kernel fixes  
1864 6471 d 9 h jermar /trunk/ sparc64 update.
- Prototype userspace layer implementation that
at least relates to sparc64 and compiles cleanly.
- Fixes for kernel's preemptible_handler and code
related to running userspace.
- Enable userspace. Several dozen instructions
are now run in userspace! We are pretty near
the userspace milestone for sparc64.		  
1860 6474 d 14 h jermar /trunk/kernel/ A lot of untested sparc64 stuff:
- Write ASID to hardware when a thread is about to run in userspace.
- Add userspace() and switch_to_userspace() functions.
- Handle special cases when the userspace spill/fill handler causes MMU trap.
- Resolve some TODOs in the existing sparc64 code.
- sparc64 has now C99 compliant header guards.
- Formatting and indentation fixes.		  

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