Revert merge of git://www.denx.de/git/u-boot-arm, commit 62479b18:

Reverting became necessary after it turned out that the patches in
the u-boot-arm repo were modified, and in some cases corrupted.

This reverts the following commits:

	066bebd6353e33af3adefc3404560871699e9961
	7a837b7310166ae8fc8b8d66d7ef01b60a80f9d6
	c88ae20580b2b01487b4cdcc8b2a113f551aee36
	a147e56f03871bba4f05058d5e04ce7deb010b04
	d6674e0e2a6a1f033945f78838566210d3f28c95
	8c8463cce44d849e37744749b32d38e1dfb12e50
	c98b47ad24b2d91f41c09a3d62d7f70ad84f4b7d
	8bf69d81782619187933a605f1a95ee1d069478d
	8c16cb0d3b971f46fbe77c072664c0f2dcd4471d
	a574a73852a527779234e73e17e7597fd8128882
	1377b5583a48021d983e1fd565f7d40c89e84d63
	1704dc20917b4f71e373e2c888497ee666d40380

Signed-off-by: Wolfgang Denk <wd@denx.de>

1 files changed, 167 insertions, 0 deletions

diff --git a/cpu/arm1136/interrupts.c b/cpu/arm1136/interrupts.c
new file mode 100644
index 0000000..491c902
--- /dev/null
+++ b/cpu/arm1136/interrupts.c
@@ -0,0 +1,167 @@
+/*
+ * (C) Copyright 2004
+ * Texas Instruments
+ * Richard Woodruff <r-woodruff2@ti.com>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ * 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>
+#include <asm/arch/bits.h>
+
+#if !defined(CONFIG_INTEGRATOR) && ! defined(CONFIG_ARCH_CINTEGRATOR)
+# include <asm/arch/omap2420.h>
+#endif
+
+#define TIMER_LOAD_VAL 0
+
+/* macro to read the 32 bit timer */
+#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+TCRR))
+
+#if defined(CONFIG_INTEGRATOR) && defined(CONFIG_ARCH_CINTEGRATOR)
+/* Use the IntegratorCP function from board/integratorcp.c */
+#else
+
+static ulong timestamp;
+static ulong lastinc;
+
+/* nothing really to do with interrupts, just starts up a counter. */
+int interrupt_init (void)
+{
+	int32_t val;
+
+	/* Start the counter ticking up */
+	*((int32_t *) (CFG_TIMERBASE + TLDR)) = TIMER_LOAD_VAL;	/* reload value on overflow*/
+	val = (CFG_PVT << 2) | BIT5 | BIT1 | BIT0;		/* mask to enable timer*/
+	*((int32_t *) (CFG_TIMERBASE + TCLR)) = val;	/* start timer */
+
+	reset_timer_masked(); /* init the timestamp and lastinc value */
+
+	return(0);
+}
+/*
+ * timer without interrupts
+ */
+void reset_timer (void)
+{
+	reset_timer_masked ();
+}
+
+ulong get_timer (ulong base)
+{
+	return get_timer_masked () - base;
+}
+
+void set_timer (ulong t)
+{
+	timestamp = t;
+}
+
+/* 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 + 1) < tmp )/* if setting this forward will roll time stamp */
+		reset_timer_masked ();	/* reset "advancing" timestamp to 0, set lastinc value */
+	else
+		tmo	+= tmp;				/* else, set advancing stamp wake up time */
+	while (get_timer_masked () < tmo)/* loop till event */
+		/*NOP*/;
+}
+
+void reset_timer_masked (void)
+{
+	/* reset time */
+	lastinc = READ_TIMER;		/* capture current incrementer value time */
+	timestamp = 0;				/* start "advancing" time stamp from 0 */
+}
+
+ulong get_timer_masked (void)
+{
+	ulong now = READ_TIMER;		/* current tick value */
+
+	if (now >= lastinc)			/* normal mode (non roll) */
+		timestamp += (now - lastinc); /* move stamp fordward with absoulte diff ticks */
+	else						/* we have rollover of incrementer */
+		timestamp += (0xFFFFFFFF - lastinc) + now;
+	lastinc = now;
+	return timestamp;
+}
+
+/* waits specified delay value and resets timestamp */
+void udelay_masked (unsigned long usec)
+{
+	ulong tmo;
+	ulong endtime;
+	signed long diff;
+
+	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);
+	}
+	endtime = get_timer_masked () + tmo;
+
+	do {
+		ulong now = get_timer_masked ();
+		diff = endtime - now;
+	} while (diff >= 0);
+}
+
+/*
+ * This function is derived from PowerPC code (read timebase as long long).
+ * On ARM it just returns the timer value.
+ */
+unsigned long long get_ticks(void)
+{
+	return get_timer(0);
+}
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On ARM it returns the number of timer ticks per second.
+ */
+ulong get_tbclk (void)
+{
+	ulong tbclk;
+	tbclk = CFG_HZ;
+	return tbclk;
+}
+#endif /* !Integrator/CP */