Re: [PATCH] CAS DFP support
From: Will Schmidt <hidden>
Date: 2006-11-22 18:37:04
On Wed, 2006-22-11 at 09:20 -0600, Jake Moilanen wrote:
When booting a Power6 in compat mode, the DFP bit must be set in the client architecture call, or else firmware will downgrade the compliance to P5 compat mode, thus removing VMX and DFP instructions. Signed-off-by: Jake Moilanen <redacted>
Acked-by: Will Schmidt <redacted>
quoted hunk ↗ jump to hunk
--- 2.6/arch/powerpc/kernel/prom_init.c~ 2006-11-13 15:01:13.000000000 -0600 +++ 2.6/arch/powerpc/kernel/prom_init.c 2006-11-21 18:38:27.000000000 -0600@@ -627,6 +627,7 @@ static void __init early_cmdline_parse(v /* Option vector 3: processor options supported */ #define OV3_FP 0x80 /* floating point */ #define OV3_VMX 0x40 /* VMX/Altivec */ +#define OV3_DFP 0x20 /* decimal floating point */ /* Option vector 5: PAPR/OF options supported */ #define OV5_LPAR 0x80 /* logical partitioning supported */@@ -674,7 +675,7 @@ static unsigned char ibm_architecture_ve /* option vector 3: processor options supported */ 3 - 2, /* length */ 0, /* don't ignore, don't halt */ - OV3_FP | OV3_VMX, + OV3_FP | OV3_VMX | OV3_DFP, /* option vector 4: IBM PAPR implementation */ 2 - 2, /* length */_______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev