sh: Track the CPU family in sh_cpuinfo.

This adds a family member to struct sh_cpuinfo, which allows us to fall
back more on the probe routines to work out what sort of subtype we are
running on. This will be used by the CPU cache initialization code in
order to first do family-level initialization, followed by subtype-level
optimizations.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

6 files changed, 15 insertions, 2 deletions

diff --git a/arch/sh/kernel/cpu/sh2/probe.c b/arch/sh/kernel/cpu/sh2/probe.c
index 5916d9096b99..1db6d8883888 100644
--- a/arch/sh/kernel/cpu/sh2/probe.c
+++ b/arch/sh/kernel/cpu/sh2/probe.c
@@ -29,6 +29,7 @@ int __init detect_cpu_and_cache_system(void)
          */
         boot_cpu_data.dcache.flags |= SH_CACHE_COMBINED;
         boot_cpu_data.icache = boot_cpu_data.dcache;
+        boot_cpu_data.family = CPU_FAMILY_SH2;
 
         return 0;
 }
diff --git a/arch/sh/kernel/cpu/sh2a/probe.c b/arch/sh/kernel/cpu/sh2a/probe.c
index e098e2f6aa08..6825d6507164 100644
--- a/arch/sh/kernel/cpu/sh2a/probe.c
+++ b/arch/sh/kernel/cpu/sh2a/probe.c
@@ -15,6 +15,8 @@
 
 int __init detect_cpu_and_cache_system(void)
 {
+        boot_cpu_data.family                    = CPU_FAMILY_SH2A;
+
         /* All SH-2A CPUs have support for 16 and 32-bit opcodes.. */
         boot_cpu_data.flags                     |= CPU_HAS_OP32;
 
diff --git a/arch/sh/kernel/cpu/sh3/probe.c b/arch/sh/kernel/cpu/sh3/probe.c
index 10f2a760c5ee..f9c7df64eb01 100644
--- a/arch/sh/kernel/cpu/sh3/probe.c
+++ b/arch/sh/kernel/cpu/sh3/probe.c
@@ -107,5 +107,7 @@ int __uses_jump_to_uncached detect_cpu_and_cache_system(void)
         boot_cpu_data.dcache.flags |= SH_CACHE_COMBINED;
         boot_cpu_data.icache = boot_cpu_data.dcache;
 
+        boot_cpu_data.family = CPU_FAMILY_SH3;
+
         return 0;
 }
diff --git a/arch/sh/kernel/cpu/sh4/probe.c b/arch/sh/kernel/cpu/sh4/probe.c
index 6c78d0a9c857..1148607c36bf 100644
--- a/arch/sh/kernel/cpu/sh4/probe.c
+++ b/arch/sh/kernel/cpu/sh4/probe.c
@@ -57,8 +57,12 @@ int __init detect_cpu_and_cache_system(void)
          * Setup some generic flags we can probe on SH-4A parts
          */
         if (((pvr >> 16) & 0xff) == 0x10) {
-                if ((cvr & 0x10000000) == 0)
+                boot_cpu_data.family = CPU_FAMILY_SH4A;
+
+                if ((cvr & 0x10000000) == 0) {
                         boot_cpu_data.flags |= CPU_HAS_DSP;
+                        boot_cpu_data.family = CPU_FAMILY_SH4AL_DSP;
+                }
 
                 boot_cpu_data.flags |= CPU_HAS_LLSC | CPU_HAS_PERF_COUNTER;
                 boot_cpu_data.cut_major = pvr & 0x7f;
@@ -68,6 +72,7 @@ int __init detect_cpu_and_cache_system(void)
         } else {
                 /* And some SH-4 defaults.. */
                 boot_cpu_data.flags |= CPU_HAS_PTEA;
+                boot_cpu_data.family = CPU_FAMILY_SH4;
         }
 
         /* FPU detection works for everyone */
@@ -174,7 +179,7 @@ int __init detect_cpu_and_cache_system(void)
 
                 break;
         default:
-                boot_cpu_data.type = CPU_SH_NONE;
+                boot_cpu_data.type = boot_cpu_data.family = CPU_SH_NONE;
                 break;
         }
 
diff --git a/arch/sh/kernel/cpu/sh5/probe.c b/arch/sh/kernel/cpu/sh5/probe.c
index 92ad844b5c12..521d05b3f7ba 100644
--- a/arch/sh/kernel/cpu/sh5/probe.c
+++ b/arch/sh/kernel/cpu/sh5/probe.c
@@ -34,6 +34,8 @@ int __init detect_cpu_and_cache_system(void)
                 /* CPU.VCR aliased at CIR address on SH5-101 */
                 boot_cpu_data.type = CPU_SH5_101;
 
+        boot_cpu_data.family = CPU_FAMILY_SH5;
+
         /*
          * First, setup some sane values for the I-cache.
          */
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index ceb409bf7741..dc403e42bcab 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -49,6 +49,7 @@
 struct sh_cpuinfo cpu_data[NR_CPUS] __read_mostly = {
         [0] = {
                 .type                   = CPU_SH_NONE,
+                .family                 = CPU_FAMILY_UNKNOWN,
                 .loops_per_jiffy        = 10000000,
         },
 };