[U-Boot] [PATCH 5/6] sh3/sh4: fix CONFIG_SYS_HZ to 1000
Jean-Christophe PLAGNIOL-VILLARD
plagnioj at jcrosoft.com
Thu Jun 4 12:06:47 CEST 2009
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
Cc: Nobuhiro Iwamatsu <iwamatsu.nobuhiro at renesas.com>
---
include/configs/MigoR.h | 2 +-
include/configs/ap325rxa.h | 2 +-
include/configs/mpr2.h | 2 +-
include/configs/ms7720se.h | 2 +-
include/configs/ms7722se.h | 2 +-
include/configs/ms7750se.h | 2 +-
include/configs/r2dplus.h | 2 +-
include/configs/r7780mp.h | 2 +-
include/configs/sh7763rdp.h | 2 +-
include/configs/sh7785lcr.h | 2 +-
lib_sh/time.c | 51 ++++++++++++++++++++++++++++--------------
11 files changed, 44 insertions(+), 27 deletions(-)
diff --git a/include/configs/MigoR.h b/include/configs/MigoR.h
index c9589bd..6ef4c01 100644
--- a/include/configs/MigoR.h
+++ b/include/configs/MigoR.h
@@ -142,6 +142,6 @@
/* Board Clock */
#define CONFIG_SYS_CLK_FREQ 33333333
#define TMU_CLK_DIVIDER (4) /* 4 (default), 16, 64, 256 or 1024 */
-#define CONFIG_SYS_HZ (CONFIG_SYS_CLK_FREQ / TMU_CLK_DIVIDER)
+#define CONFIG_SYS_HZ 1000
#endif /* __MIGO_R_H */
diff --git a/include/configs/ap325rxa.h b/include/configs/ap325rxa.h
index c6d77e3..550d67f 100644
--- a/include/configs/ap325rxa.h
+++ b/include/configs/ap325rxa.h
@@ -171,6 +171,6 @@
/* Board Clock */
#define CONFIG_SYS_CLK_FREQ 33333333
#define TMU_CLK_DIVIDER (4) /* 4 (default), 16, 64, 256 or 1024 */
-#define CONFIG_SYS_HZ (CONFIG_SYS_CLK_FREQ / TMU_CLK_DIVIDER)
+#define CONFIG_SYS_HZ 1000
#endif /* __AP325RXA_H */
diff --git a/include/configs/mpr2.h b/include/configs/mpr2.h
index 86f6a93..c147337 100644
--- a/include/configs/mpr2.h
+++ b/include/configs/mpr2.h
@@ -83,7 +83,7 @@
/* Clocks */
#define CONFIG_SYS_CLK_FREQ 24000000
#define TMU_CLK_DIVIDER 4 /* 4 (default), 16, 64, 256 or 1024 */
-#define CONFIG_SYS_HZ (CONFIG_SYS_CLK_FREQ / TMU_CLK_DIVIDER)
+#define CONFIG_SYS_HZ 1000
/* UART */
#define CONFIG_SCIF_CONSOLE 1
diff --git a/include/configs/ms7720se.h b/include/configs/ms7720se.h
index 9a88ec7..f2e5122 100644
--- a/include/configs/ms7720se.h
+++ b/include/configs/ms7720se.h
@@ -102,7 +102,7 @@
/* Board Clock */
#define CONFIG_SYS_CLK_FREQ 33333333
#define TMU_CLK_DIVIDER 4 /* 4 (default), 16, 64, 256 or 1024 */
-#define CONFIG_SYS_HZ (CONFIG_SYS_CLK_FREQ / TMU_CLK_DIVIDER)
+#define CONFIG_SYS_HZ 1000
/* PCMCIA */
#define CONFIG_IDE_PCMCIA 1
diff --git a/include/configs/ms7722se.h b/include/configs/ms7722se.h
index 53ffbee..e83bd08 100644
--- a/include/configs/ms7722se.h
+++ b/include/configs/ms7722se.h
@@ -129,6 +129,6 @@
/* Board Clock */
#define CONFIG_SYS_CLK_FREQ 33333333
#define TMU_CLK_DIVIDER (4) /* 4 (default), 16, 64, 256 or 1024 */
-#define CONFIG_SYS_HZ (CONFIG_SYS_CLK_FREQ / TMU_CLK_DIVIDER)
+#define CONFIG_SYS_HZ 1000
#endif /* __MS7722SE_H */
diff --git a/include/configs/ms7750se.h b/include/configs/ms7750se.h
index 5eed3ab..67af209 100644
--- a/include/configs/ms7750se.h
+++ b/include/configs/ms7750se.h
@@ -102,6 +102,6 @@
/* Board Clock */
#define CONFIG_SYS_CLK_FREQ 33333333
#define TMU_CLK_DIVIDER 4
-#define CONFIG_SYS_HZ (CONFIG_SYS_CLK_FREQ / TMU_CLK_DIVIDER)
+#define CONFIG_SYS_HZ 1000
#endif /* __MS7750SE_H */
diff --git a/include/configs/r2dplus.h b/include/configs/r2dplus.h
index 6fa1eaf..804e3b8 100644
--- a/include/configs/r2dplus.h
+++ b/include/configs/r2dplus.h
@@ -81,7 +81,7 @@
*/
#define CONFIG_SYS_CLK_FREQ 60000000
#define TMU_CLK_DIVIDER 4
-#define CONFIG_SYS_HZ (CONFIG_SYS_CLK_FREQ / TMU_CLK_DIVIDER)
+#define CONFIG_SYS_HZ 1000
#define CONFIG_SYS_PLL_SETTLING_TIME 100/* in us */
/*
diff --git a/include/configs/r7780mp.h b/include/configs/r7780mp.h
index 88eb568..7b6867d 100644
--- a/include/configs/r7780mp.h
+++ b/include/configs/r7780mp.h
@@ -122,7 +122,7 @@
/* Board Clock */
#define CONFIG_SYS_CLK_FREQ 33333333
#define TMU_CLK_DIVIDER 4
-#define CONFIG_SYS_HZ (CONFIG_SYS_CLK_FREQ / TMU_CLK_DIVIDER)
+#define CONFIG_SYS_HZ 1000
/* PCI Controller */
#if defined(CONFIG_CMD_PCI)
diff --git a/include/configs/sh7763rdp.h b/include/configs/sh7763rdp.h
index 8d7456e..79631be 100644
--- a/include/configs/sh7763rdp.h
+++ b/include/configs/sh7763rdp.h
@@ -115,7 +115,7 @@
/* Clock */
#define CONFIG_SYS_CLK_FREQ 66666666
#define TMU_CLK_DIVIDER (4) /* 4 (default), 16, 64, 256 or 1024 */
-#define CONFIG_SYS_HZ (CONFIG_SYS_CLK_FREQ / TMU_CLK_DIVIDER)
+#define CONFIG_SYS_HZ 1000
/* Ether */
#define CONFIG_NET_MULTI 1
diff --git a/include/configs/sh7785lcr.h b/include/configs/sh7785lcr.h
index 21c3f70..9b4defd 100644
--- a/include/configs/sh7785lcr.h
+++ b/include/configs/sh7785lcr.h
@@ -187,6 +187,6 @@
/* The SCIF used external clock. system clock only used timer. */
#define CONFIG_SYS_CLK_FREQ 50000000
#define TMU_CLK_DIVIDER 4
-#define CONFIG_SYS_HZ (CONFIG_SYS_CLK_FREQ / TMU_CLK_DIVIDER)
+#define CONFIG_SYS_HZ 1000
#endif /* __SH7785LCR_H */
diff --git a/lib_sh/time.c b/lib_sh/time.c
index 8fccce3..dc1c57e 100644
--- a/lib_sh/time.c
+++ b/lib_sh/time.c
@@ -1,4 +1,7 @@
/*
+ * (C) Copyright 2009
+ * Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
+ *
* (C) Copyright 2007-2008
* Nobobuhiro Iwamatsu <iwamatsu at nigauri.org>
*
@@ -25,11 +28,30 @@
*/
#include <common.h>
+#include <div64.h>
#include <asm/processor.h>
+#include <asm/clk.h>
#include <asm/io.h>
#define TMU_MAX_COUNTER (~0UL)
-static int clk_adj = 1;
+
+static ulong timer_freq;
+
+static inline unsigned long long tick_to_time(unsigned long long tick)
+{
+ tick *= CONFIG_SYS_HZ;
+ do_div(tick, timer_freq);
+
+ return tick;
+}
+
+static inline unsigned long long usec_to_tick(unsigned long long usec)
+{
+ usec *= timer_freq;
+ do_div(usec, 1000000);
+
+ return usec;
+}
static void tmu_timer_start (unsigned int timer)
{
@@ -65,15 +87,12 @@ int timer_init (void)
break;
case 4:
default:
- bit = 0;
break;
}
writew(readw(TCR0) | bit, TCR0);
- /* Clock adjustment calc */
- clk_adj = (int)(1.0 / ((1.0 / CONFIG_SYS_HZ) * 1000000));
- if (clk_adj < 1)
- clk_adj = 1;
+ /* Calc clock rate */
+ timer_freq = get_tmu0_clk_rate() >> ((bit + 1) * 2);
tmu_timer_stop(0);
tmu_timer_start(0);
@@ -86,24 +105,22 @@ unsigned long long get_ticks (void)
return 0 - readl(TCNT0);
}
-static unsigned long get_usec (void)
-{
- return (0 - readl(TCNT0));
-}
-
void udelay (unsigned long usec)
{
- unsigned int start = get_usec();
- unsigned int end = start + (usec * clk_adj);
+ unsigned long long tmp;
+ ulong tmo;
+
+ tmo = usec_to_tick(usec);
+ tmp = get_ticks() + tmo; /* get current timestamp */
- while (get_usec() < end)
- continue;
+ while (get_ticks() < tmp) /* loop till event */
+ /*NOP*/;
}
unsigned long get_timer (unsigned long base)
{
/* return msec */
- return ((get_usec() / clk_adj) / 1000) - base;
+ return tick_to_time(get_ticks()) - base;
}
void set_timer (unsigned long t)
@@ -120,5 +137,5 @@ void reset_timer (void)
unsigned long get_tbclk (void)
{
- return CONFIG_SYS_HZ;
+ return timer_freq;
}
--
1.6.3.1
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