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Rev Age Author Path Log message Diff
1896 6447 d 21 h jermar /trunk/ Convert sparc64 to detect keyboard and determine
its physical address by walking the memory representation
of the OpenFirmware device tree.

Add bus-specific functions that know how to apply the
"ranges" property to one component of the "reg" property.
Buses supported so far include FHC, EBUS and PCI.		  
1895 6449 d 22 h jermar /trunk/ More ofw_tree work and fixes.
Add ofw_tree_lookup().
Every ofw_tree_node now also contains a disambigued name which is essential for tree lookups.		  
1894 6450 d 20 h jermar /trunk/ Add balloc() (a.k.a boot allocator):
- balloc() only needs to know how to allocate memory.
- Memory allocated via balloc() is supposed to be passed to kernel and never freed by boot itself.
- make kernel aware of boot allocations

More work on OFW device tree:
- use balloc() to efficiently and safely allocate memory for the canonical copy of the device tree

sparc64 boot:
- pass OFW device tree root node pointer to kernel		  
1892 6451 d 8 h jermar /trunk/kernel/arch/sparc64/src/mm/ Small improvement in initialization of sparc64's TBSs.  
1891 6451 d 20 h jermar /trunk/kernel/ sparc64 work:
- Experimental support for TSB (Translation Storage Buffer).		  
1890 6452 d 7 h jermar /trunk/ - Create a dedicated slab cache for as_t objects and switch from malloc/free to slab_alloc/slab_free for
them.

- Slightly fix and improve both the kernel and userspace atomic_add() on sparc64.

- More TSB work on the sparc64 front.		  
1889 6452 d 22 h jermar /trunk/kernel/ Fix bug in mm/as.c:
- as_area_destroy() should not work with AS but as

sparc64 work:
- start implementing TSB support		  
1888 6456 d 1 h jermar /trunk/ C99 compliant header guards (hopefully) everywhere in the kernel.
Formatting and indentation changes.
Small improvements in sparc64.		  
1887 6456 d 5 h jermar /trunk/kernel/arch/sparc64/ When creating TLB mapping for the sparc64 kernel, enable CV (cacheable virtually) bit.
Also install locked mappings only in context 0.		  
1885 6456 d 10 h jermar /trunk/kernel/arch/sparc64/include/ On sparc64, get_stack_base() must use the unbiased %sp (i.e. %sp + 2047).  
1884 6457 d 4 h jermar /trunk/kernel/arch/sparc64/src/ Unfortunatelly, the sparc64's FPRS register is writable by non-privileged software
so we cannot save only half of the FPU context depending on FPRS dirty bits.
Instead, we must save the entire FPU register file.		  
1883 6457 d 4 h jermar /trunk/kernel/arch/sparc64/ More sparc64 FPU trap handlers.  
1882 6457 d 5 h jermar /trunk/kernel/ Support for sparc64 FPU context.  
1881 6458 d 6 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 6459 d 21 h jermar /trunk/ Small improvements here and there.  
1879 6461 d 6 h jermar /trunk/kernel/arch/sparc64/src/ Revert last change.
The register window save area is automatically allocated by the SAVE instruction.		  
1878 6461 d 8 h jermar /trunk/kernel/arch/sparc64/src/ Even the first kernel register window after the switch from userspace stack needs
proper register window save area [sparc64].		  
1877 6461 d 9 h jermar /trunk/kernel/ Coding style fixes.
Remove unneeded sparc64 dummy functions.		  
1876 6461 d 9 h jermar /trunk/kernel/arch/sparc64/src/trap/ Fixes for sparc64's preemptible_handler().
Resynchronize CWP with that of TL=0.		  
1875 6462 d 23 h jermar /trunk/ sparc64 work.
- Changes to enable userspace keyboard drivers.
- Fix z8530 initialization (i.e. clear any pending Tx interrupts).
- Experimental support for framebuffers with inverted colors.		  

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