diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2006-06-07 02:04:18 (GMT) |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-06-09 03:06:00 (GMT) |
| commit | 133dda1e4f757e036fa838cba6804d0344931c4a (patch) | |
| tree | 1ca77025cb56fcacaee6f50501642784b568430e | |
| parent | 33b7497794424181dca87f18e43ecbc07f86bba5 (diff) | |
| download | linux-133dda1e4f757e036fa838cba6804d0344931c4a.tar.xz | |
[PATCH] powerpc: Fix cell blade detection
The IBM Cell blade firmware might confuse the kernel to think it's a
pSeries machine. This fixes it for now. With a bit of luck, the firmware
will be updated to avoid that in the future but currently that patch is
needed.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
| -rw-r--r-- | arch/powerpc/kernel/prom_init.c | 9 | ||||
| -rw-r--r-- | arch/powerpc/platforms/cell/setup.c | 11 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 8 |
3 files changed, 22 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index f393a38..f70bd09 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -1623,6 +1623,15 @@ static int __init prom_find_machine_type(void) if (strstr(p, RELOC("Power Macintosh")) || strstr(p, RELOC("MacRISC"))) return PLATFORM_POWERMAC; +#ifdef CONFIG_PPC64 + /* We must make sure we don't detect the IBM Cell + * blades as pSeries due to some firmware issues, + * so we do it here. + */ + if (strstr(p, RELOC("IBM,CBEA")) || + strstr(p, RELOC("IBM,CPBW-1.0"))) + return PLATFORM_GENERIC; +#endif /* CONFIG_PPC64 */ i += sl + 1; } } diff --git a/arch/powerpc/platforms/cell/setup.c b/arch/powerpc/platforms/cell/setup.c index 6574b22..fd3e560 100644 --- a/arch/powerpc/platforms/cell/setup.c +++ b/arch/powerpc/platforms/cell/setup.c @@ -125,14 +125,13 @@ static void __init cell_init_early(void) static int __init cell_probe(void) { - /* XXX This is temporary, the Cell maintainer will come up with - * more appropriate detection logic - */ unsigned long root = of_get_flat_dt_root(); - if (!of_flat_dt_is_compatible(root, "IBM,CPBW-1.0")) - return 0; - return 1; + if (of_flat_dt_is_compatible(root, "IBM,CBEA") || + of_flat_dt_is_compatible(root, "IBM,CPBW-1.0")) + return 1; + + return 0; } /* diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 5f79f01..3ba8783 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -389,6 +389,7 @@ static int __init pSeries_probe_hypertas(unsigned long node, static int __init pSeries_probe(void) { + unsigned long root = of_get_flat_dt_root(); char *dtype = of_get_flat_dt_prop(of_get_flat_dt_root(), "device_type", NULL); if (dtype == NULL) @@ -396,6 +397,13 @@ static int __init pSeries_probe(void) if (strcmp(dtype, "chrp")) return 0; + /* Cell blades firmware claims to be chrp while it's not. Until this + * is fixed, we need to avoid those here. + */ + if (of_flat_dt_is_compatible(root, "IBM,CPBW-1.0") || + of_flat_dt_is_compatible(root, "IBM,CBEA")) + return 0; + DBG("pSeries detected, looking for LPAR capability...\n"); /* Now try to figure out if we are running on LPAR */ |