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>

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);