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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-11-29 18:22:56 (GMT) |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-12-07 07:04:53 (GMT) |
| commit | 40dfef66a9e3d4a308c3ed7355c9a89e68c08ffc (patch) | |
| tree | d72e4a38bb15409941a92b366228415385a14492 /arch | |
| parent | cee72d5bb48952f2e50acd2610d52ea82f7092c9 (diff) | |
| download | linux-40dfef66a9e3d4a308c3ed7355c9a89e68c08ffc.tar.xz | |
powerpc/powernv: Workaround OFW issues in prom_init.c
Open Firmware on OPAL machines seems to have issues if we close
stdin and/or we try to print things after calling "quiesce" so
we avoid doing both.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/prom_init.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index cc58486..f4f9f2f 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -2969,9 +2969,11 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, /* * in case stdin is USB and still active on IBM machines... * Unfortunately quiesce crashes on some powermacs if we have - * closed stdin already (in particular the powerbook 101). + * closed stdin already (in particular the powerbook 101). It + * appears that the OPAL version of OFW doesn't like it either. */ - if (RELOC(of_platform) != PLATFORM_POWERMAC) + if (RELOC(of_platform) != PLATFORM_POWERMAC && + RELOC(of_platform) != PLATFORM_OPAL) prom_close_stdin(); /* @@ -2987,8 +2989,12 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, * is common to us and kexec */ hdr = RELOC(dt_header_start); - prom_printf("returning from prom_init\n"); - prom_debug("->dt_header_start=0x%x\n", hdr); + + /* Don't print anything after quiesce under OPAL, it crashes OFW */ + if (RELOC(of_platform) != PLATFORM_OPAL) { + prom_printf("returning from prom_init\n"); + prom_debug("->dt_header_start=0x%x\n", hdr); + } #ifdef CONFIG_PPC32 reloc_got2(-offset); |