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eal/arm: detect ARMv7 architecture in CPU flags

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Based on the patch by David Hunt and Armuta Zende:

  lib: added support for armv7 architecture

Signed-off-by: Jan Viktorin <viktorin@rehivetech.com>
Signed-off-by: Amruta Zende <amruta.zende@intel.com>
Signed-off-by: David Hunt <david.hunt@intel.com>
Acked-by: David Marchand <david.marchand@6wind.com>
This commit is contained in:
Jan Viktorin 2015-11-03 00:47:23 +01:00 committed by Thomas Monjalon
parent b94e5c9406
commit 5aa739bd39
1 changed files with 12 additions and 0 deletions
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12
lib/librte_eal/common/include/arch/arm/rte_cpuflags_32.h
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@ -41,6 +41,7 @@ extern "C" {
#include <fcntl.h>
#include <assert.h>
#include <unistd.h>
#include <string.h>
#include "generic/rte_cpuflags.h"
@ -52,10 +53,15 @@ extern "C" {
#define AT_HWCAP2 26
#endif
#ifndef AT_PLATFORM
#define AT_PLATFORM 15
#endif
/* software based registers */
enum cpu_register_t {
REG_HWCAP = 0,
REG_HWCAP2,
REG_PLATFORM,
};
/**
@ -89,6 +95,7 @@ enum rte_cpu_flag_t {
RTE_CPUFLAG_SHA1,
RTE_CPUFLAG_SHA2,
RTE_CPUFLAG_CRC32,
RTE_CPUFLAG_V7L,
/* The last item */
RTE_CPUFLAG_NUMFLAGS,/**< This should always be the last! */
};
@ -121,6 +128,7 @@ static const struct feature_entry cpu_feature_table[] = {
FEAT_DEF(SHA1, 0x00000001, 0, REG_HWCAP2, 2)
FEAT_DEF(SHA2, 0x00000001, 0, REG_HWCAP2, 3)
FEAT_DEF(CRC32, 0x00000001, 0, REG_HWCAP2, 4)
FEAT_DEF(V7L, 0x00000001, 0, REG_PLATFORM, 0)
};
/*
@ -141,6 +149,10 @@ rte_cpu_get_features(__attribute__((unused)) uint32_t leaf,
out[REG_HWCAP] = auxv.a_un.a_val;
else if (auxv.a_type == AT_HWCAP2)
out[REG_HWCAP2] = auxv.a_un.a_val;
else if (auxv.a_type == AT_PLATFORM) {
if (!strcmp((const char *)auxv.a_un.a_val, "v7l"))
out[REG_PLATFORM] = 0x0001;
}
}
}