xref: /src/sys/arch/ia64/TODO

$ NetBSD: TODO,v 1.1 2018/04/14 12:06:03 scole Exp $

What works:
  The ski simulator (pkgsrc/emulators/ski) works on NetBSD, can run
  and step through in assembly.

  Netbooting may work on some machines, basically you need to boot
  diskless with the loader.efi (from src/sys/arch/ia64/stand/ia64/)
  using dhcpd and put the kernel in a nfs accessible directory.  There
  is info here https://www.netbsd.org/docs/network/netboot/ and
  http://gnats.netbsd.org/49717 about how to setup.

  Also, a successful report of booting off the CD is here
  http://mail-index.netbsd.org/port-ia64/2009/06/18/msg000102.html

Tasks remaining, first couple seem most important:

- pmap.c is getting compilation warnings (for gcc6 & gcc7) like
  /var/tmp//cckQKcKn.s:7614: Warning: Use of 'st8' may violate RAW dependency 'RR#' (data)
  ...
  how to change compile flags for specific kernel file like "CFLAGS.pmap.c+= -O0" ?
- context switching and forking appear unfinished,
  vm_machdep.c::cpu_lwp_fork() appears incomplete
- pmap module, imported from freebsd but still needs more work and
  testing
- IA64 Stack unwind code: Support remaining unwind descriptor
  types. (See arch/ia64/unwind/TODO). ddb() traces need to print line
  information also.  Seems like a lot of this could be re-used
  from freebsd
- redo _regset.h in netbsd style with __greg_t __gregset_t
- some commands in ski are not yet implemented, 2 important ones
  are still missing, "cstack" and "pm", which view the stack and
  source code lines respectively 
- create a ski network driver
- create a ski disk driver
- implement ld.elf_so, MK_DYNAMICROOT
- fix memory detection, on real hardware doesn't find all memory
- implement interrupts (sacpi & pci), can be mostly from freebsd?
- MKGDB for ia64
- implement fp[gs]etsticky, [make|get|set|swap]context
- floating point, fenv functions were imported from freebsd, but haven't been tested
- implement core_machdep.c
- implement __cloneS ptrace.S sbrk.S shmat.S
- implement kvm_ia64.c
- implement pmc (performance monitoring counters) for ia64 pmc registers
- implement ia64 md code for cpuctl, intrctl as needed
- optional(?) mutex.h/lock_stubs.S, mutex_enter()/mutex_exit() __HAVE_MUTEX_STUBS
       mutex_spin_enter()/mutex_spin_exit() __HAVE_SPIN_MUTEX_STUBS
- rwlock.h rw_enter(),rw_exit(),rw_tryenter() __HAVE_RW_STUBS, implemented already?
- add efipart_dev to read gpt/ffs disks for bootloader
- fix printf of lx in bootloader/libsa ?
- sort out bootloader/loader.efi stuff, is freebsd one good enough or
  do we want commands more like netbsd i386 bootloader? e.g., add
  command to boot nfs from loader.efi instead of hack now
- ia64 implement __HAVE_FAST_SOFTINTS?
- want or need __HAVE_CPU_UAREA_ROUTINES, cpu_uarea_alloc,  cpu_uarea_free
- fix all "[Nn]ot yet" and "XXX" functions everywhere
- create/fix sys/arch/ia64/include/pci_machdep.h and implement actual functions,
  need to handle "multiple" pci busses like from http://www.openpa.net/systems/il/rp3400-bus.txt,
  add pchb, looks like one here
   http://mail-index.netbsd.org/port-ia64/2010/06/29/msg000116.html
  and/or could port from freebsd
- Kernel module pre-loading via the bootloader
- SMP
- write console and/or X framebuffer driver.  freebsd has vgapci
  device that may be portable
- add ia32 emulation, port from freebsd
- create install EFI/cdrom/netbsd
- fix ski to run on other archs beside i386, or at least amd64

Pie in the sky
- Xen and itanium!
- qemu and itanium