From e1bbb64ec2ca8ddf1dec91ae1e08ef96ee53639a Mon Sep 17 00:00:00 2001
From: "H. Nikolaus Schaller" <hns@goldelico.com>
Date: Tue, 11 Jan 2011 17:31:17 +0100
Subject: fixed issue with submodules

---
 x-loader                     |   1 -
 x-loader/cpu/arm926ejs/cpu.c | 126 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 126 insertions(+), 1 deletion(-)
 delete mode 160000 x-loader
 create mode 100644 x-loader/cpu/arm926ejs/cpu.c

(limited to 'x-loader/cpu/arm926ejs/cpu.c')

diff --git a/x-loader b/x-loader
deleted file mode 160000
index 1c9276a..0000000
--- a/x-loader
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 1c9276af4d6a5b7014a7630a1abeddf3b3177563
diff --git a/x-loader/cpu/arm926ejs/cpu.c b/x-loader/cpu/arm926ejs/cpu.c
new file mode 100644
index 0000000..972fa8a
--- /dev/null
+++ b/x-loader/cpu/arm926ejs/cpu.c
@@ -0,0 +1,126 @@
+/*
+ * (C) Copyright 2004
+ * Texas Instruments <www.ti.com>
+ * Jian Zhang <jzhang@ti.com>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+  
+#define TIMER_LOAD_VAL 0xffffffff
+
+/* macro to read the 32 bit timer */
+#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+8))
+
+static ulong timestamp;
+static ulong lastdec;
+
+static void reset_timer_masked (void);
+
+/* nothing really to do with cpu, just starts up a counter. */
+int cpu_init (void)
+{
+ 	int32_t val;
+
+	/* Start the decrementer ticking down from 0xffffffff */
+	*((int32_t *) (CFG_TIMERBASE + LOAD_TIM)) = TIMER_LOAD_VAL;
+	val = MPUTIM_ST | MPUTIM_AR | MPUTIM_CLOCK_ENABLE | (CFG_PVT << MPUTIM_PTV_BIT);
+	*((int32_t *) (CFG_TIMERBASE + CNTL_TIMER)) = val;
+
+	/* init the timestamp and lastdec value */
+	reset_timer_masked();
+ 	
+ 	return (0);
+}
+
+static void reset_timer_masked (void)
+{
+	/* reset time */
+	lastdec = READ_TIMER;  /* capure current decrementer value time */
+	timestamp = 0;         /* start "advancing" time stamp from 0 */
+}
+
+#ifdef  CFG_UDELAY
+
+static ulong get_timer_masked (void);
+static ulong get_timer (ulong base);
+
+/* delay x useconds AND perserve advance timstamp value */
+void udelay (unsigned long usec)
+{
+	ulong tmo, tmp;
+
+	if(usec >= 1000){               /* if "big" number, spread normalization to seconds */
+		tmo = usec / 1000;      /* start to normalize for usec to ticks per sec */
+		tmo *= CFG_HZ;          /* find number of "ticks" to wait to achieve target */
+		tmo /= 1000;            /* finish normalize. */
+	}else{                          /* else small number, don't kill it prior to HZ multiply */
+		tmo = usec * CFG_HZ;
+		tmo /= (1000*1000);
+	}
+
+	tmp = get_timer (0);		/* get current timestamp */
+	if( (tmo + tmp) < tmp ) 	/* if setting this fordward will roll time stamp */
+		reset_timer_masked ();	/* reset "advancing" timestamp to 0, set lastdec value */
+	else
+		tmo += tmp;		/* else, set advancing stamp wake up time */
+
+	while (get_timer_masked () < tmo)/* loop till event */
+		/*NOP*/;
+}
+ 
+static ulong get_timer_masked (void)
+{
+	ulong now = READ_TIMER;		/* current tick value */
+
+	if (lastdec >= now) {		/* normal mode (non roll) */
+		/* normal mode */
+		timestamp += lastdec - now; /* move stamp fordward with absoulte diff ticks */
+	} else {			/* we have overflow of the count down timer */
+		/* nts = ts + ld + (TLV - now)
+		 * ts=old stamp, ld=time that passed before passing through -1
+		 * (TLV-now) amount of time after passing though -1
+		 * nts = new "advancing time stamp"...it could also roll and cause problems.
+		 */
+		timestamp += lastdec + TIMER_LOAD_VAL - now;
+	}
+	lastdec = now;
+
+	return timestamp;
+}
+
+static ulong get_timer (ulong base)
+{
+	return get_timer_masked () - base;
+}
+
+#endif 		/* CFG_UDELAY */
+
-- 
cgit v1.1