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freebsd-dev/sys/conf/options.ia64

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This is the first snapshot of the FreeBSD/ia64 kernel. This kernel will not work on any real hardware (or fully work on any simulator). Much more needs to happen before this is actually functional but its nice to see the FreeBSD copyright message appear in the ia64 simulator.
2000-09-29 13:46:07 +00:00
# $FreeBSD$
Add a cosmetic comment.
2001-08-02 23:54:23 +00:00
# Options specific to the ia64 platform kernels
This is the first snapshot of the FreeBSD/ia64 kernel. This kernel will not work on any real hardware (or fully work on any simulator). Much more needs to happen before this is actually functional but its nice to see the FreeBSD copyright message appear in the ia64 simulator.
2000-09-29 13:46:07 +00:00
ITANIUM opt_global.h
Add ITANIUM2 as a global option.
2002-11-24 19:50:15 +00:00
ITANIUM2 opt_global.h
This is the first snapshot of the FreeBSD/ia64 kernel. This kernel will not work on any real hardware (or fully work on any simulator). Much more needs to happen before this is actually functional but its nice to see the FreeBSD copyright message appear in the ia64 simulator.
2000-09-29 13:46:07 +00:00
Revamp of the syscall path, exception and context handling. The prime objectives are: o Implement a syscall path based on the epc inststruction (see sys/ia64/ia64/syscall.s). o Revisit the places were we need to save and restore registers and define those contexts in terms of the register sets (see sys/ia64/include/_regset.h). Secundairy objectives: o Remove the requirement to use contigmalloc for kernel stacks. o Better handling of the high FP registers for SMP systems. o Switch to the new cpu_switch() and cpu_throw() semantics. o Add a good unwinder to reconstruct contexts for the rare cases we need to (see sys/contrib/ia64/libuwx) Many files are affected by this change. Functionally it boils down to: o The EPC syscall doesn't preserve registers it does not need to preserve and places the arguments differently on the stack. This affects libc and truss. o The address of the kernel page directory (kptdir) had to be unstaticized for use by the nested TLB fault handler. The name has been changed to ia64_kptdir to avoid conflicts. The renaming affects libkvm. o The trapframe only contains the special registers and the scratch registers. For syscalls using the EPC syscall path no scratch registers are saved. This affects all places where the trapframe is accessed. Most notably the unaligned access handler, the signal delivery code and the debugger. o Context switching only partly saves the special registers and the preserved registers. This affects cpu_switch() and triggered the move to the new semantics, which additionally affects cpu_throw(). o The high FP registers are either in the PCB or on some CPU. context switching for them is done lazily. This affects trap(). o The mcontext has room for all registers, but not all of them have to be defined in all cases. This mostly affects signal delivery code now. The *context syscalls are as of yet still unimplemented. Many details went into the removal of the requirement to use contigmalloc for kernel stacks. The details are mostly CPU specific and limited to exception_save() and exception_restore(). The few places where we create, destroy or switch stacks were mostly simplified by not having to construct physical addresses and additionally saving the virtual addresses for later use. Besides more efficient context saving and restoring, which of course yields a noticable speedup, this also fixes the dreaded SMP bootup problem as a side-effect. The details of which are still not fully understood. This change includes all the necessary backward compatibility code to have it handle older userland binaries that use the break instruction for syscalls. Support for break-based syscalls has been pessimized in favor of a clean implementation. Due to the overall better performance of the kernel, this will still be notived as an improvement if it's noticed at all. Approved by: re@ (jhb)
2003-05-16 21:26:42 +00:00
IA32 opt_global.h
Add IA32 option for emulation of i386 binaries on the ia64 platform.
2002-04-10 19:35:50 +00:00
Remove PAGE_SIZE_4K, PAGE_SIZE_8K and PAGE_SIZE_16K and replace them with PAGE_SHIFT. A single option is better to LINT than multiple mutual exclusive ones.
2003-08-23 03:22:41 +00:00
PAGE_SHIFT opt_global.h
Add options to select between 4k, 8k and 16k page sizes on ia64. The default is now 8k.
2001-09-07 11:03:39 +00:00
Make UWX_TRACE_ENABLE a global option so that we don't have to modify vendor code (libuwx) with a specific include directive. The second order advantage is that we can also enable verbosity in the glue code (ia64/ia64/unwind.c).
2003-07-11 08:47:15 +00:00
UWX_TRACE_ENABLE opt_global.h
This is the first snapshot of the FreeBSD/ia64 kernel. This kernel will not work on any real hardware (or fully work on any simulator). Much more needs to happen before this is actually functional but its nice to see the FreeBSD copyright message appear in the ia64 simulator.
2000-09-29 13:46:07 +00:00
PPC_PROBE_CHIPSET opt_ppc.h
PPC_DEBUG opt_ppc.h
VGA_ALT_SEQACCESS opt_vga.h
VGA_DEBUG opt_vga.h
VGA_NO_FONT_LOADING opt_vga.h
VGA_NO_MODE_CHANGE opt_vga.h
VGA_SLOW_IOACCESS opt_vga.h
VGA_WIDTH90 opt_vga.h
PSM_HOOKRESUME opt_psm.h
PSM_RESETAFTERSUSPEND opt_psm.h
PSM_DEBUG opt_psm.h
# Atkbd options
ATKBD_DFLT_KEYMAP opt_atkbd.h
Add SKI_ROOT_FILESYSTEM option.
2001-03-09 13:46:03 +00:00
# SKI emulator options
Add various file relating to firmware interfaces and make SKI support optional.
2001-09-29 11:46:22 +00:00
SKI opt_ski.h
Add SKI_ROOT_FILESYSTEM option.
2001-03-09 13:46:03 +00:00
SKI_ROOT_FILESYSTEM opt_ski.h
Allow the size of the SSC memory disk used with the SKI emulator to be overridden in the kernel config file via the SSC_NSECT option.
2001-04-30 21:26:43 +00:00
SSC_NSECT opt_ski.h
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