From: Greg Ungerer <gerg@uclinux.org>
Date: Tue, 2 Nov 2010 07:40:37 +0000 (+1000)
Subject: m68knommu: fix clock rate value reported for ColdFire 54xx parts
X-Git-Tag: MMI-PSA29.97-13-9~20978^2~18
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=733f31b764061d976a60c5ee454632d9562900ea;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

m68knommu: fix clock rate value reported for ColdFire 54xx parts

The instruction timings of the ColdFire 54xx family parts are
different to other version 4 parts (or version 2 or 3 parts for
that matter too).

Move the instruction timing setting into the ColdFire part
specific headers, and set the 54xx value appropriately.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
---

diff --git a/arch/m68k/include/asm/m5206sim.h b/arch/m68k/include/asm/m5206sim.h
index 6cc7a42cc425..b882a210ee6e 100644
--- a/arch/m68k/include/asm/m5206sim.h
+++ b/arch/m68k/include/asm/m5206sim.h
@@ -12,7 +12,8 @@
 #define	m5206sim_h
 /****************************************************************************/
 
-#define	CPU_NAME	"COLDFIRE(m5206)"
+#define	CPU_NAME		"COLDFIRE(m5206)"
+#define	CPU_INSTR_PER_JIFFY	3
 
 /*
  *	Define the 5206 SIM register set addresses.
diff --git a/arch/m68k/include/asm/m520xsim.h b/arch/m68k/include/asm/m520xsim.h
index afa211858ecb..85b39edf41a0 100644
--- a/arch/m68k/include/asm/m520xsim.h
+++ b/arch/m68k/include/asm/m520xsim.h
@@ -11,7 +11,8 @@
 #define m520xsim_h
 /****************************************************************************/
 
-#define	CPU_NAME	"COLDFIRE(m520x)"
+#define	CPU_NAME		"COLDFIRE(m520x)"
+#define	CPU_INSTR_PER_JIFFY	3
 
 /*
  *  Define the 520x SIM register set addresses.
diff --git a/arch/m68k/include/asm/m523xsim.h b/arch/m68k/include/asm/m523xsim.h
index 6a2c90d74d15..9d597dcb29c0 100644
--- a/arch/m68k/include/asm/m523xsim.h
+++ b/arch/m68k/include/asm/m523xsim.h
@@ -11,7 +11,8 @@
 #define	m523xsim_h
 /****************************************************************************/
 
-#define	CPU_NAME	"COLDFIRE(m523x)"
+#define	CPU_NAME		"COLDFIRE(m523x)"
+#define	CPU_INSTR_PER_JIFFY	3
 
 /*
  *	Define the 523x SIM register set addresses.
diff --git a/arch/m68k/include/asm/m5249sim.h b/arch/m68k/include/asm/m5249sim.h
index 6c49ed88845c..c107228728db 100644
--- a/arch/m68k/include/asm/m5249sim.h
+++ b/arch/m68k/include/asm/m5249sim.h
@@ -11,7 +11,8 @@
 #define	m5249sim_h
 /****************************************************************************/
 
-#define	CPU_NAME	"COLDFIRE(m5249)"
+#define	CPU_NAME		"COLDFIRE(m5249)"
+#define	CPU_INSTR_PER_JIFFY	3
 
 /*
  *	Define the 5249 SIM register set addresses.
diff --git a/arch/m68k/include/asm/m5272sim.h b/arch/m68k/include/asm/m5272sim.h
index 7edef8fc1920..8cea714dee46 100644
--- a/arch/m68k/include/asm/m5272sim.h
+++ b/arch/m68k/include/asm/m5272sim.h
@@ -12,7 +12,8 @@
 #define	m5272sim_h
 /****************************************************************************/
 
-#define	CPU_NAME	"COLDFIRE(m5272)"
+#define	CPU_NAME		"COLDFIRE(m5272)"
+#define	CPU_INSTR_PER_JIFFY	3
 
 /*
  *	Define the 5272 SIM register set addresses.
diff --git a/arch/m68k/include/asm/m527xsim.h b/arch/m68k/include/asm/m527xsim.h
index 627156a1d96a..5223b71d3432 100644
--- a/arch/m68k/include/asm/m527xsim.h
+++ b/arch/m68k/include/asm/m527xsim.h
@@ -11,7 +11,8 @@
 #define	m527xsim_h
 /****************************************************************************/
 
-#define	CPU_NAME	"COLDFIRE(m527x)"
+#define	CPU_NAME		"COLDFIRE(m527x)"
+#define	CPU_INSTR_PER_JIFFY	3
 
 
 /*
diff --git a/arch/m68k/include/asm/m528xsim.h b/arch/m68k/include/asm/m528xsim.h
index 03a6d576787c..4e35f970f662 100644
--- a/arch/m68k/include/asm/m528xsim.h
+++ b/arch/m68k/include/asm/m528xsim.h
@@ -11,7 +11,8 @@
 #define	m528xsim_h
 /****************************************************************************/
 
-#define	CPU_NAME	"COLDFIRE(m528x)"
+#define	CPU_NAME		"COLDFIRE(m528x)"
+#define	CPU_INSTR_PER_JIFFY	3
 
 /*
  *	Define the 5280/5282 SIM register set addresses.
diff --git a/arch/m68k/include/asm/m5307sim.h b/arch/m68k/include/asm/m5307sim.h
index 3e06b8379a49..008f36bd66c3 100644
--- a/arch/m68k/include/asm/m5307sim.h
+++ b/arch/m68k/include/asm/m5307sim.h
@@ -14,7 +14,8 @@
 #define	m5307sim_h
 /****************************************************************************/
 
-#define	CPU_NAME	"COLDFIRE(m5307)"
+#define	CPU_NAME		"COLDFIRE(m5307)"
+#define	CPU_INSTR_PER_JIFFY	3
 
 /*
  *	Define the 5307 SIM register set addresses.
diff --git a/arch/m68k/include/asm/m532xsim.h b/arch/m68k/include/asm/m532xsim.h
index 9f4688bcc454..b8126d3253e1 100644
--- a/arch/m68k/include/asm/m532xsim.h
+++ b/arch/m68k/include/asm/m532xsim.h
@@ -9,7 +9,8 @@
 #define	m532xsim_h
 /****************************************************************************/
 
-#define	CPU_NAME	"COLDFIRE(m532x)"
+#define	CPU_NAME		"COLDFIRE(m532x)"
+#define	CPU_INSTR_PER_JIFFY	3
 
 #define MCF_REG32(x) (*(volatile unsigned long  *)(x))
 #define MCF_REG16(x) (*(volatile unsigned short *)(x))
diff --git a/arch/m68k/include/asm/m5407sim.h b/arch/m68k/include/asm/m5407sim.h
index 1de44c5affe0..e07d4d8cf31f 100644
--- a/arch/m68k/include/asm/m5407sim.h
+++ b/arch/m68k/include/asm/m5407sim.h
@@ -14,7 +14,8 @@
 #define	m5407sim_h
 /****************************************************************************/
 
-#define	CPU_NAME	"COLDFIRE(m5407)"
+#define	CPU_NAME		"COLDFIRE(m5407)"
+#define	CPU_INSTR_PER_JIFFY	3
 
 /*
  *	Define the 5407 SIM register set addresses.
diff --git a/arch/m68k/include/asm/m54xxsim.h b/arch/m68k/include/asm/m54xxsim.h
index d69a64fd3bde..6072248916ac 100644
--- a/arch/m68k/include/asm/m54xxsim.h
+++ b/arch/m68k/include/asm/m54xxsim.h
@@ -5,9 +5,10 @@
 #ifndef	m54xxsim_h
 #define m54xxsim_h
 
-#define	CPU_NAME	"COLDFIRE(m54xx)"
+#define	CPU_NAME		"COLDFIRE(m54xx)"
+#define	CPU_INSTR_PER_JIFFY	2
 
-#define MCFINT_VECBASE      64
+#define MCFINT_VECBASE		64
 
 /*
  *      Interrupt Controller Registers
diff --git a/arch/m68knommu/kernel/setup.c b/arch/m68knommu/kernel/setup.c
index f48d9df484d3..5c931f9d392c 100644
--- a/arch/m68knommu/kernel/setup.c
+++ b/arch/m68knommu/kernel/setup.c
@@ -66,13 +66,20 @@ void (*mach_power_off)(void);
 #ifdef CONFIG_M68360
 #define CPU_NAME	"MC68360"
 #endif
-/*
- * The ColdFire CPU names are defined in their headers.
- */
 #ifndef CPU_NAME
 #define	CPU_NAME	"UNKNOWN"
 #endif
 
+/*
+ * Different cores have different instruction execution timings.
+ * The old/traditional 68000 cores are basically all the same, at 16.
+ * The ColdFire cores vary a little, their values are defined in their
+ * headers. We default to the standard 68000 value here.
+ */
+#ifndef CPU_INSTR_PER_JIFFY
+#define	CPU_INSTR_PER_JIFFY	16
+#endif
+
 extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
 extern int _ramstart, _ramend;
 
@@ -273,12 +280,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	cpu = CPU_NAME;
 	mmu = "none";
 	fpu = "none";
-
-#ifdef CONFIG_COLDFIRE
-	clockfreq = (loops_per_jiffy * HZ) * 3;
-#else
-	clockfreq = (loops_per_jiffy * HZ) * 16;
-#endif
+	clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY;
 
 	seq_printf(m, "CPU:\t\t%s\n"
 		      "MMU:\t\t%s\n"