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path: root/arch/sh/kernel/cpu/sh4/probe.c
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Diffstat (limited to 'arch/sh/kernel/cpu/sh4/probe.c')
-rw-r--r--arch/sh/kernel/cpu/sh4/probe.c34
1 files changed, 24 insertions, 10 deletions
diff --git a/arch/sh/kernel/cpu/sh4/probe.c b/arch/sh/kernel/cpu/sh4/probe.c
index 85ff48c1533..2a7707a81d8 100644
--- a/arch/sh/kernel/cpu/sh4/probe.c
+++ b/arch/sh/kernel/cpu/sh4/probe.c
@@ -3,7 +3,7 @@
*
* CPU Subtype Probing for SH-4.
*
- * Copyright (C) 2001, 2002, 2003, 2004 Paul Mundt
+ * Copyright (C) 2001 - 2005 Paul Mundt
* Copyright (C) 2003 Richard Curnow
*
* This file is subject to the terms and conditions of the GNU General Public
@@ -53,9 +53,6 @@ int __init detect_cpu_and_cache_system(void)
cpu_data->dcache.ways = 1;
cpu_data->dcache.linesz = L1_CACHE_BYTES;
- /* Set the FPU flag, virtually all SH-4's have one */
- cpu_data->flags |= CPU_HAS_FPU;
-
/*
* Probe the underlying processor version/revision and
* adjust cpu_data setup accordingly.
@@ -63,26 +60,37 @@ int __init detect_cpu_and_cache_system(void)
switch (pvr) {
case 0x205:
cpu_data->type = CPU_SH7750;
- cpu_data->flags |= CPU_HAS_P2_FLUSH_BUG | CPU_HAS_PERF_COUNTER;
+ cpu_data->flags |= CPU_HAS_P2_FLUSH_BUG | CPU_HAS_FPU |
+ CPU_HAS_PERF_COUNTER | CPU_HAS_PTEA;
break;
case 0x206:
cpu_data->type = CPU_SH7750S;
- cpu_data->flags |= CPU_HAS_P2_FLUSH_BUG | CPU_HAS_PERF_COUNTER;
+ cpu_data->flags |= CPU_HAS_P2_FLUSH_BUG | CPU_HAS_FPU |
+ CPU_HAS_PERF_COUNTER | CPU_HAS_PTEA;
break;
case 0x1100:
cpu_data->type = CPU_SH7751;
+ cpu_data->flags |= CPU_HAS_FPU | CPU_HAS_PTEA;
break;
case 0x2000:
cpu_data->type = CPU_SH73180;
cpu_data->icache.ways = 4;
cpu_data->dcache.ways = 4;
- cpu_data->flags &= ~CPU_HAS_FPU;
+
+ /*
+ * XXX: Double check this, none of the SH-4A/SH-4AL processors
+ * should have this, as it's essentially a legacy thing.
+ */
+ cpu_data->flags |= CPU_HAS_PTEA;
break;
case 0x2001:
case 0x2004:
cpu_data->type = CPU_SH7770;
cpu_data->icache.ways = 4;
cpu_data->dcache.ways = 4;
+
+ /* Same note as above applies here for PTEA */
+ cpu_data->flags |= CPU_HAS_FPU | CPU_HAS_PTEA;
break;
case 0x2006:
case 0x200A:
@@ -90,27 +98,31 @@ int __init detect_cpu_and_cache_system(void)
cpu_data->type = CPU_SH7781;
else
cpu_data->type = CPU_SH7780;
+
cpu_data->icache.ways = 4;
cpu_data->dcache.ways = 4;
+
+ cpu_data->flags |= CPU_HAS_FPU | CPU_HAS_PERF_COUNTER;
break;
case 0x8000:
cpu_data->type = CPU_ST40RA;
+ cpu_data->flags |= CPU_HAS_FPU | CPU_HAS_PTEA;
break;
case 0x8100:
cpu_data->type = CPU_ST40GX1;
+ cpu_data->flags |= CPU_HAS_FPU | CPU_HAS_PTEA;
break;
case 0x700:
cpu_data->type = CPU_SH4_501;
cpu_data->icache.ways = 2;
cpu_data->dcache.ways = 2;
-
- /* No FPU on the SH4-500 series.. */
- cpu_data->flags &= ~CPU_HAS_FPU;
+ cpu_data->flags |= CPU_HAS_PTEA;
break;
case 0x600:
cpu_data->type = CPU_SH4_202;
cpu_data->icache.ways = 2;
cpu_data->dcache.ways = 2;
+ cpu_data->flags |= CPU_HAS_FPU | CPU_HAS_PTEA;
break;
case 0x500 ... 0x501:
switch (prr) {
@@ -128,6 +140,8 @@ int __init detect_cpu_and_cache_system(void)
cpu_data->icache.ways = 2;
cpu_data->dcache.ways = 2;
+ cpu_data->flags |= CPU_HAS_FPU | CPU_HAS_PTEA;
+
break;
default:
cpu_data->type = CPU_SH_NONE;