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authorPaul Mackerras <paulus@samba.org>2006-01-14 10:11:39 +1100
committerPaul Mackerras <paulus@samba.org>2006-01-14 10:11:39 +1100
commit80f15dc703b3677d0b025bafd215f1f3664c8978 (patch)
treefa60781edcedefe4eb6baa6d213a62bbc6d7803a /include/asm-powerpc/cputable.h
parent25cd6aa0aa059b48cdcef2a00981b14fafd5161a (diff)
powerpc: Provide a suitable AT_PLATFORM value
The glibc folks want to use AT_PLATFORM to select between possible alternative versions of shared libraries. This commit makes the kernel supply an AT_PLATFORM string that indicates what class of processor we are running on. Processors with the same set of user-level instructions and roughly the same instruction scheduling characteristics are given the same AT_PLATFORM value; for example, 821, 823 and 860 are all reported as "ppc823", and 7447, 7447A, 7448, 7450, 7451, 7455 are all called "ppc7450". The intention is that the AT_PLATFORM values match the values that gcc accepts for the -mcpu= option. For values which are numeric (e.g. -mcpu=750), "ppc" has been prepended. This also adds a PPC_FEATURE_BOOKE bit to the AT_HWCAP value and sets it for the 440 family and the Freescale 85xx family. Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/cputable.h')
-rw-r--r--include/asm-powerpc/cputable.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-powerpc/cputable.h b/include/asm-powerpc/cputable.h
index ef6ead34a773..03017d905704 100644
--- a/include/asm-powerpc/cputable.h
+++ b/include/asm-powerpc/cputable.h
@@ -19,6 +19,7 @@
#define PPC_FEATURE_POWER5 0x00040000
#define PPC_FEATURE_POWER5_PLUS 0x00020000
#define PPC_FEATURE_CELL 0x00010000
+#define PPC_FEATURE_BOOKE 0x00008000
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
@@ -64,6 +65,9 @@ struct cpu_spec {
/* Processor specific oprofile operations */
enum powerpc_oprofile_type oprofile_type;
+
+ /* Name of processor class, for the ELF AT_PLATFORM entry */
+ char *platform;
};
extern struct cpu_spec *cur_cpu_spec;

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