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authorPaul Mackerras <paulus@samba.org>2006-11-10 20:38:53 +1100
committerPaul Mackerras <paulus@samba.org>2006-12-04 20:40:16 +1100
commit974a76f51355d22f4f63d83d6bb1ccecd019ec58 (patch)
tree9a6c5745d8e1f592427d96fbf64d8546af4feb39 /arch/powerpc/platforms/iseries
parent18f2190d796198fbb5d4bc4c87511acf3ced7d47 (diff)
[POWERPC] Distinguish POWER6 partition modes and tell userspace
This adds code to look at the properties firmware puts in the device tree to determine what compatibility mode the partition is in on POWER6 machines, and set the ELF aux vector AT_HWCAP and AT_PLATFORM entries appropriately. Specifically, we look at the cpu-version property in the cpu node(s). If that contains a "logical" PVR value (of the form 0x0f00000x), we call identify_cpu again with this PVR value. A value of 0x0f000001 indicates the partition is in POWER5+ compatibility mode, and a value of 0x0f000002 indicates "POWER6 architected" mode, with various extensions disabled. We also look for various other properties: ibm,dfp, ibm,purr and ibm,spurr. Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/iseries')
-rw-r--r--arch/powerpc/platforms/iseries/setup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c
index 0f39bdbbf91..1796644ec7d 100644
--- a/arch/powerpc/platforms/iseries/setup.c
+++ b/arch/powerpc/platforms/iseries/setup.c
@@ -677,7 +677,7 @@ void * __init iSeries_early_setup(void)
/* Identify CPU type. This is done again by the common code later
* on but calling this function multiple times is fine.
*/
- identify_cpu(0);
+ identify_cpu(0, mfspr(SPRN_PVR));
powerpc_firmware_features |= FW_FEATURE_ISERIES;
powerpc_firmware_features |= FW_FEATURE_LPAR;