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gtbX
Tux's lil' helper
Joined: 11 Oct 2003
Posts: 126
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 Posted: Tue May 12, 2015 2:40 pm Post subject: 64bit kernel on SGI IP22 |
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How do I build a 64bit kernel for an SGI Indigo2 (IP22)? The gentoo handbook implies that this is possible, but whenever I try the result is unusable.
Is this wise/advisable? (disregard the fact that doing anything with such an old machine is... questionable)
I activated the "64bit kernel" and "o32 compatibility" kernel options, compiled it with kgcc64-4.9.2 and used the vmlinux.32 build target, but get an immediate panic when trying to boot it:
| Code: | >> boot -f curr64 root=/dev/sda3 ro
error on vh read
Cannot load scsi(0)disk(1)rdisk(0)partition(8)/curr64.
Problem reading elf structure at offset -2009811488.
error on vh read
Cannot load scsi(0)disk(1)rdisk(0)partition(8)/curr64.
Problem reading elf structure at offset -2009811488.
Exception: <vector=UTLB Miss>
Status register: 0x30004803<CU1,CU0,IM7,IM4,IPL=???,MODE=KERNEL,EXL,IE>
Cause register: 0x8008<CE=0,IP8,EXC=RMISS>
Exception PC: 0x9fc49d24, Exception RA: 0x9fc49f1c
exception, bad address: 0x4
Local I/O interrupt register 2: 0xc0 <SLOT0,SLOT1>
Saved user regs in hex (&gpda 0xa8740e48, &_regs 0xa8741048):
arg: a8740000 0 1 a8747750
tmp: a8740000 8 a8746f10 0 a8749200 a87ff848 18000000 a87ff96b
sve: a8740000 c12dc13a 0 c0f9138a 0 c0edd9c9 0 bf077b8a
t8 a8740000 t9 c0dcea58 at 0 v0 c0f9138a v1 0 k1 0
gp a8740000 fp ffffffff sp ffffffff ra ffffffff
PANIC: Unexpected exception
[Press reset or ENTER to restart.] |
I only ask because I can't seem to compile the latest 4.0.1 kernel in 32bit mode anymore:
| Code: | # make
...
CC arch/mips/mm/sc-ip22.o
{standard input}: Assembler messages:
{standard input}:121: Error: number (0x9000000080000000) larger than 32 bits
{standard input}:155: Error: number (0x9000000080000000) larger than 32 bits
{standard input}:177: Error: number (0x9000000080000000) larger than 32 bits
scripts/Makefile.build:258: recipe for target 'arch/mips/mm/sc-ip22.o' failed |
Thanks! |
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armanox
n00b
Joined: 03 Jan 2008
Posts: 36
Location: Baltimore, MD
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| Posted: Thu May 21, 2015 3:30 am Post subject: |
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I don't know how many people still have an Indigo lying around to try to help you unfortunately. I know that there is work on IP30 (Octane) and that IP32 (O2) used to work very well. Does it boot when using a 32bit kernel, out of curiosity?
_________________
"Apollo was astonished, Dionysus thought me mad. But they heard my story further and they wondered and were sad." |
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gtbX
Tux's lil' helper
Joined: 11 Oct 2003
Posts: 126
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| Posted: Thu May 21, 2015 6:21 am Post subject: |
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| It does. That's what I've been using up until now. |
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Kumba
Developer
Joined: 16 Jul 2002
Posts: 393
Location: Sigma 957
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| Posted: Fri May 22, 2015 9:13 pm Post subject: Re: 64bit kernel on SGI IP22 |
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| gtbX wrote: | How do I build a 64bit kernel for an SGI Indigo2 (IP22)? The gentoo handbook implies that this is possible, but whenever I try the result is unusable.
Is this wise/advisable? (disregard the fact that doing anything with such an old machine is... questionable)
I activated the "64bit kernel" and "o32 compatibility" kernel options, compiled it with kgcc64-4.9.2 and used the vmlinux.32 build target, but get an immediate panic when trying to boot it:
| Code: | >> boot -f curr64 root=/dev/sda3 ro
error on vh read
Cannot load scsi(0)disk(1)rdisk(0)partition(8)/curr64.
Problem reading elf structure at offset -2009811488.
error on vh read
Cannot load scsi(0)disk(1)rdisk(0)partition(8)/curr64.
Problem reading elf structure at offset -2009811488.
Exception: <vector=UTLB Miss>
Status register: 0x30004803<CU1,CU0,IM7,IM4,IPL=???,MODE=KERNEL,EXL,IE>
Cause register: 0x8008<CE=0,IP8,EXC=RMISS>
Exception PC: 0x9fc49d24, Exception RA: 0x9fc49f1c
exception, bad address: 0x4
Local I/O interrupt register 2: 0xc0 <SLOT0,SLOT1>
Saved user regs in hex (&gpda 0xa8740e48, &_regs 0xa8741048):
arg: a8740000 0 1 a8747750
tmp: a8740000 8 a8746f10 0 a8749200 a87ff848 18000000 a87ff96b
sve: a8740000 c12dc13a 0 c0f9138a 0 c0edd9c9 0 bf077b8a
t8 a8740000 t9 c0dcea58 at 0 v0 c0f9138a v1 0 k1 0
gp a8740000 fp ffffffff sp ffffffff ra ffffffff
PANIC: Unexpected exception
[Press reset or ENTER to restart.] |
I only ask because I can't seem to compile the latest 4.0.1 kernel in 32bit mode anymore:
| Code: | # make
...
CC arch/mips/mm/sc-ip22.o
{standard input}: Assembler messages:
{standard input}:121: Error: number (0x9000000080000000) larger than 32 bits
{standard input}:155: Error: number (0x9000000080000000) larger than 32 bits
{standard input}:177: Error: number (0x9000000080000000) larger than 32 bits
scripts/Makefile.build:258: recipe for target 'arch/mips/mm/sc-ip22.o' failed |
Thanks! |
Can you try netbooting the 64bit kernel just to rule out something screwy with the volume header?
I checked git, and that 0x9000000000000000 address is hardcoded in arch/mips/mm/sc-ip22.c in 'indy_sc_wipe', and has been there since the great CVS->GIT migration. Can you build a fresh checkout of the linux-mips.org tree in 32-bit mode? If not, then I suspect newer toolchains are treating that as an error now, and it might need to be reported to the linux-mips ML for action. Otherwise, if you can build a linux-mips checkout, then I've got a bug to hunt down...
I have an Indy, but it's dead due to the RTC battery failure problem, so I can't test the booting bit at all.
_________________
"The past tempts us, the present confuses us, the future frightens us. And our lives slip away, moment by moment, lost in that vast, terrible in-between."
--Emperor Turhan, Centauri Republic |
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gtbX
Tux's lil' helper
Joined: 11 Oct 2003
Posts: 126
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| Posted: Sat May 23, 2015 3:19 am Post subject: |
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I get the same error when netbooting
| Code: | >> bootp(): root=/dev/sda3
Setting $netaddr to 192.168.1.113 (from server highwind)
Obtaining from server highwind
Cannot load bootp():.
Problem reading elf structure at offset -2009811488.
Unable to execute bootp(): |
I'll try building an older kernel, see if I get anything different |
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gtbX
Tux's lil' helper
Joined: 11 Oct 2003
Posts: 126
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| Posted: Sat May 23, 2015 6:24 pm Post subject: |
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| Ok, tried rebuilding an older 32bit kernel, got the same result with 0x9000000080000000 being too long. Something in the toolchain must've changed so that it no longer compiles. |
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