All compatable values are copied from the MIPS volume header to the
BSD disklabel structures.
* Add support for writing Mips volume header.
* Remove support for writing NetBSD label directly (this was broken)
These changes allow the kernel to read either a BSD disklabel created under
NetBSD/sparc or a MIPS volume header created under RISC/os.
There is a small amount of losage with the conversion between the 2
types of disk labels (mainly to do with file system types).
A table is used to map partition numbers and types between the two
types, and unless someone does something real fancy (or crazy) it should
work in both senario's
This change will allow the stand alone shell to directly load a NetBSD
kernel and mount a file system, avoiding the need for a seperate disk or
bootp server to bootstrapping NetBSD.
NetBSD/mipsco is now self sufficiant. We are not far from having a
miniroot filesystem and removing the need to have another NetBSD
machine to create the base filesystems.
Minor Trap for young players:
The root partition must be created with 'newfs -O' in order for the
stand alone shell to boot the kernel
TODO:
Add support for writing NetBSD disk labels back in - it will be useful
for non boot disks. I'm just not sure how to control the 2 behavours
treated as just another available VMEbus slave image as far as
bus_dma(9) is concerned.
To preserve faster onboard memory, mvmebus_dmamem_alloc() will
allocate first from the offboard VMEbus RAM slave image if present,
and assuming its address modifier matches the caller's constraints.
This can be overidden by specifying the BUS_DMA_ONBOARD_RAM flag.
deal with dynamic address modifier generation based on the CPU's
function code pins.
Also implement VMEbus slave mode for mvme147. (Not yet 100% working.)
in the non-MULTIPROCESSOR case (LOCKDEBUG requires it). Scheduler
lock is held upon entry to mi_switch() and cpu_switch(), and
cpu_switch() releases the lock before returning.
Largely from Bill Sommerfeld, with some minor bug fixes and
machine-dependent code hacking from me.
vme_dmamem*.
This is still a work in progress, but seems to DTRT on mvme167 so far.
TODO:
. Get VMEbus slave mode going on mvme147. This should be easy.
. Fix up the A16 slave mappings.
. Bounce buffer support. (Messy, but pretty much a `must have'.)
. Figure out how to deal with `location monitor' interrupts
within the framework. (Useful for Busnet, among other things.)
. It would be nice to make use of the VMEchip2's DMA facilities...
- Using the prom getenv function determine the correct console port
- Remove old prom function hooks
- Tidy up bootflags (remove upper case names, fixup RB_ASKNAME) as
recommended by Jaromír Doleèek
code ignore the new partition types, and look for the new "USR" partition
flag.
From SUNAGAWA Keiki <kei_sun@ba2.so-net.ne.jp> with slight changes by me.
Closes PR port-macppc/10046
as used on later arm26 system (A5000, A4, A3010, A3020, A4000).
What we have got:
...
upc0 at iobus0 base 0x010000: config state bb 87 1c 00 00
fdc at upc0 offset 0x3f4 not configured
wdc0 at upc0 offset 0x1f0
lpt0 at upc0 offset 0x278
com0 at upc0 offset 0x3f8: ns8250 or ns16450, no fifo
...
What we haven't got:
- FDC support (found, but not configured).
- Clearing lpt interrupts on arm26 systems (needs help from IOEB).
- A upc(4) manual page.
- More than minimal testing (my A3020s don't have root devices).
- A proper probe routine (arm26 can't use one anyway).
need to access this when we have the proclist locked for reading,
and thus cannot store it in the PCB (which may be swapped out).
As part of this, call pmap_activate() from cpu_switch() to switch
to the new address space, and refresh the PCB's copy of the LDT
selector from the pmap structure (see above paragraph). We need
to do this for MP support anyhow.
Fixes a "panic: spinlock_switchcheck: CPU 0 has 1 spin locks" via
gdt_compact() reported by Nathan Williams.
so that special setup functions needed for some CPUs will be run before
some things (like UVM) are inited.
Add vm_page_zero_enable = FALSE to the cyrix 6x86 case, as page zeroing
while idle causes problems.
I-sync in pmap_remove_mapping() if the old mapping had PG_EXEC, and
kick curcpu (IMB) or other CPUs (via an IPI) only if the pmap was
the kernel pmap or active on other CPUs (curcpu is handled in userret()).
- Use lazy I-sync everywhere, (hopefully) eliminating the last of the
I-sync issues for multiprocessor support.
- Eliminate some memory barriers added in a couple of previous revisions,
after some discussion on port-alpha/tech-smp.
Still some lazy I-sync optimization possibilites:
- pmap_changebit() does not need to I-sync when only write-protecting
a page.
- pmap_asn_alloc() may be able to cancel a pending lazy I-sync when a
new ASN is allocated. Need to double check against Green Book or
Brown Book.
handler to hook up device interrupts and softc callbacks.
Suggested by: Jason Thorpe and Toru Nishimura
* Fixup the indenting in a few places to conform to NetBSD style
the DMA FIFO on non block aligned writes. Not doing this causes large
writes (>4k) that are not aligned to incorrectly write 64bytes
of data every 4k interval. This only occurs on raw devices - typically
newfs fails to create a clean filesystem.
- pmap_zero_page() and pmap_copy_page(): if MULTIPROCESSOR, issue
a memory barrier after we zero/copy the page, to ensure that
other CPUs see the correct data.
- XXX Should we use MB, or is WMB good enough?
Also, bzero -> memset, bcopy -> memcpy.
- Make sure to do an MB after a PTE is set to a new value, so that
other processors see it.
- Use lazy I-sync in two pmap_page_protect() and in pmap_changebit(),
so that it is MP-safe. XXX Two more places where IMB is used in
the raw, but they're not in the common path.
There'll be some more lazy I-sync cleanups soon.
while suspended. When waking up the power hooks are again called at
splhigh() and then the level is lowered.
This prevents interrupts from reaching a device before the power hook
has reinitialized it.
driver and make it MI):
Set the ByteSwap bit on big-endian hosts, so we can use 16-bit transfers to get
at packets whatever.
Treat Tx/Rx headers as arrays of four bytes rather than as 32-bit words.
