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| author | Sam Ravnborg <sam@ravnborg.org> | 2012-05-25 21:20:11 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-05-27 23:52:45 -0700 |
| commit | d87d8c11f347e743f0223d16c8ec57ef7e0274b2 (patch) | |
| tree | 0de090f63821b0acbcc1d197b48485ff8ed919e5 | |
| parent | b08b5c9c9b35c938e8a94d9232e05a7f69a1dba5 (diff) | |
| download | linux-d87d8c11f347e743f0223d16c8ec57ef7e0274b2.tar.gz linux-d87d8c11f347e743f0223d16c8ec57ef7e0274b2.tar.bz2 linux-d87d8c11f347e743f0223d16c8ec57ef7e0274b2.zip | |
sparc32: handle leon in cpu.c
A few hardcoded constant were replaced by symbolic
versions to improve readability
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
| -rw-r--r-- | arch/sparc/include/asm/psr.h | 2 | ||||
| -rw-r--r-- | arch/sparc/kernel/cpu.c | 18 |
2 files changed, 11 insertions, 9 deletions
diff --git a/arch/sparc/include/asm/psr.h b/arch/sparc/include/asm/psr.h index c02c735d4ebe..cee7ed9c927d 100644 --- a/arch/sparc/include/asm/psr.h +++ b/arch/sparc/include/asm/psr.h @@ -35,7 +35,9 @@ #define PSR_VERS 0x0f000000 /* cpu-version field */ #define PSR_IMPL 0xf0000000 /* cpu-implementation field */ +#define PSR_VERS_SHIFT 24 #define PSR_IMPL_SHIFT 28 +#define PSR_VERS_SHIFTED_MASK 0xf #define PSR_IMPL_SHIFTED_MASK 0xf #define PSR_IMPL_TI 0x4 diff --git a/arch/sparc/kernel/cpu.c b/arch/sparc/kernel/cpu.c index 2d1819641769..a6c94a2bf9d4 100644 --- a/arch/sparc/kernel/cpu.c +++ b/arch/sparc/kernel/cpu.c @@ -121,7 +121,7 @@ static const struct manufacturer_info __initconst manufacturer_info[] = { FPU(-1, NULL) } },{ - 4, + PSR_IMPL_TI, .cpu_info = { CPU(0, "Texas Instruments, Inc. - SuperSparc-(II)"), /* SparcClassic -- borned STP1010TAB-50*/ @@ -191,7 +191,7 @@ static const struct manufacturer_info __initconst manufacturer_info[] = { FPU(-1, NULL) } },{ - 0xF, /* Aeroflex Gaisler */ + PSR_IMPL_LEON, /* Aeroflex Gaisler */ .cpu_info = { CPU(3, "LEON"), CPU(-1, NULL) @@ -440,16 +440,16 @@ static int __init cpu_type_probe(void) int psr_impl, psr_vers, fpu_vers; int psr; - psr_impl = ((get_psr() >> 28) & 0xf); - psr_vers = ((get_psr() >> 24) & 0xf); + psr_impl = ((get_psr() >> PSR_IMPL_SHIFT) & PSR_IMPL_SHIFTED_MASK); + psr_vers = ((get_psr() >> PSR_VERS_SHIFT) & PSR_VERS_SHIFTED_MASK); psr = get_psr(); put_psr(psr | PSR_EF); -#ifdef CONFIG_SPARC_LEON - fpu_vers = get_psr() & PSR_EF ? ((get_fsr() >> 17) & 0x7) : 7; -#else - fpu_vers = ((get_fsr() >> 17) & 0x7); -#endif + + if (psr_impl == PSR_IMPL_LEON) + fpu_vers = get_psr() & PSR_EF ? ((get_fsr() >> 17) & 0x7) : 7; + else + fpu_vers = ((get_fsr() >> 17) & 0x7); put_psr(psr); |