| Rev |
Age |
Author |
Path |
Log message |
Diff |
| 1915 |
6432 d 10 h |
jermar |
/trunk/kernel/ |
A quote from from SPARC V9 specification:
The Y register is deprecated; it is provided only for compatibility with previous versions
of the architecture. It should not be used in new SPARC-V9 software. It is
recommended that all instructions that reference the Y register (i.e., SMUL,
SMULcc, UMUL, UMULcc, MULScc, SDIV, SDIVcc, UDIV, UDIVcc, RDY, and
WRY) be avoided. See the appropriate pages in Appendix A, “Instruction Definitions,”
for suitable substitute instructions.
Still gcc is generating code which uses Y and some of the instructions above.
This change modifies the preemptible_handler() to preserve the Y register
across preemption. |
|
| 1914 |
6432 d 15 h |
jermar |
/trunk/kernel/generic/ |
Add function for printing out info about address space. |
|
| 1904 |
6442 d 14 h |
jermar |
/trunk/kernel/ |
IPI/cross-call support for sparc64.
SMP on sparc64 is now fully supported. |
|
| 1901 |
6444 d 15 h |
jermar |
/trunk/kernel/ |
Make SMP related parts of main.c more generic.
Move initialization of local APIC to architecture specific code.
Add arch_post_cpu_init() to support the above. |
|
| 1896 |
6448 d 8 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. |
|
| 1894 |
6451 d 8 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 |
|
| 1891 |
6452 d 8 h |
jermar |
/trunk/kernel/ |
sparc64 work:
- Experimental support for TSB (Translation Storage Buffer). |
|
| 1890 |
6452 d 18 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 |
6453 d 10 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 13 h |
jermar |
/trunk/ |
C99 compliant header guards (hopefully) everywhere in the kernel.
Formatting and indentation changes.
Small improvements in sparc64. |
|
| 1882 |
6457 d 17 h |
jermar |
/trunk/kernel/ |
Support for sparc64 FPU context. |
|
| 1881 |
6458 d 17 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 |
6460 d 9 h |
jermar |
/trunk/ |
Small improvements here and there. |
|
| 1877 |
6461 d 21 h |
jermar |
/trunk/kernel/ |
Coding style fixes.
Remove unneeded sparc64 dummy functions. |
|
| 1875 |
6463 d 10 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. |
|
| 1870 |
6465 d 9 h |
jermar |
/trunk/kernel/ |
Handle more sparc64 traps and improve handling of already handled traps. |
|
| 1868 |
6465 d 15 h |
jermar |
/trunk/ |
sparc64 work.
- the syscall wrapper needs to use the "memory"
clobber specifier to prevent over-optimization.
- on sparc64, the user address space spans the whole
64-bit space and therefore the macro
USER_ADDRESS_SPACE_SIZE_ARCH, as it was defined,
overflows to 0
- stop using USER_ADDRESS_SPACE_SIZE_ARCH and define
MAX_HEAP_SIZE instead
- in our situation when kernel and user address spaces
are separate, the G (global) bit cannot be used
(there is no point in it anymore)
- add the DEBUG() macro to stdio.h; DEBUG() uses
SYS_IO and is a good debugging tool for getting
early userspace to work |
|
| 1865 |
6466 d 11 h |
jermar |
/trunk/kernel/ |
sparc64 kernel fixes |
|
| 1864 |
6467 d 7 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. |
|
| 1863 |
6469 d 9 h |
jermar |
/trunk/ |
Allow architectures to decide between inlined and not inlined version of syscall wrapper.
Implement inlined syscall wrapper for sparc64. |
|