Changes since U-Boot 1.1.4:
======================================================================
+* Apply SoC concept to arm926ejs CPUs, i.e. move the SoC specific
+ timer and cpu_reset code from cpu/$(CPU) into the new
+ cpu/$(CPU)/$(SOC) directories
+ Patch by Andreas Engel, 13 Mar 2006
+
* Change max size of uncompressed uImage's to 8MByte and add
CFG_BOOTM_LEN to adjust this setting.
@./mkconfig $(@:_config=) arm arm925t omap1510inn
omap5912osk_config : unconfig
- @./mkconfig $(@:_config=) arm arm926ejs omap5912osk
+ @./mkconfig $(@:_config=) arm arm926ejs omap5912osk NULL omap
omap1610inn_config \
omap1610inn_cs0boot_config \
echo "#define CONFIG_CS3_BOOT" >> ./include/config.h ; \
echo "... configured for CS3 boot"; \
fi;
- @./mkconfig -a $(call xtract_omap1610xxx,$@) arm arm926ejs omap1610inn
+ @./mkconfig -a $(call xtract_omap1610xxx,$@) arm arm926ejs omap1610inn NULL omap
omap730p2_config \
omap730p2_cs0boot_config \
echo "#define CONFIG_CS3_BOOT" >> ./include/config.h ; \
echo "... configured for CS3 boot"; \
fi;
- @./mkconfig -a $(call xtract_omap730p2,$@) arm arm926ejs omap730p2
+ @./mkconfig -a $(call xtract_omap730p2,$@) arm arm926ejs omap730p2 NULL omap
scb9328_config : unconfig
@./mkconfig $(@:_config=) arm arm920t scb9328 NULL imx
# ---------------------------------------------------------
# Complete the configuration
# ---------------------------------------------------------
-./mkconfig -a versatile arm arm926ejs versatile
+./mkconfig -a versatile arm arm926ejs versatile NULL versatile
echo "Variant:: $variant"
#include <arm926ejs.h>
#include <asm/proc-armv/ptrace.h>
-#define TIMER_LOAD_VAL 0xffffffff
-
-/* macro to read the 32 bit timer */
-#ifdef CONFIG_OMAP
-#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+8))
-#endif
-#ifdef CONFIG_VERSATILE
-#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+4))
-#endif
-
#ifdef CONFIG_USE_IRQ
/* enable IRQ interrupts */
void enable_interrupts (void)
#else
-static ulong timestamp;
-static ulong lastdec;
-
/* nothing really to do with interrupts, just starts up a counter. */
int interrupt_init (void)
{
-#ifdef CONFIG_OMAP
- 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;
-#endif /* CONFIG_OMAP */
-
-#ifdef CONFIG_VERSATILE
- *(volatile ulong *)(CFG_TIMERBASE + 0) = CFG_TIMER_RELOAD; /* TimerLoad */
- *(volatile ulong *)(CFG_TIMERBASE + 4) = CFG_TIMER_RELOAD; /* TimerValue */
- *(volatile ulong *)(CFG_TIMERBASE + 8) = 0x8C;
-#endif /* CONFIG_VERSATILE */
-
- /* init the timestamp and lastdec value */
- reset_timer_masked();
-
- return (0);
-}
-
-/*
- * timer without interrupts
- */
-
-void reset_timer (void)
-{
- reset_timer_masked ();
-}
+ extern void timer_init(void);
-ulong get_timer (ulong base)
-{
- return get_timer_masked () - base;
-}
+ timer_init();
-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 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*/;
-}
-
-void reset_timer_masked (void)
-{
- /* reset time */
- lastdec = READ_TIMER; /* capure current decrementer value time */
- timestamp = 0; /* start "advancing" time stamp from 0 */
-}
-
-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;
-}
-
-/* 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;
+ return 0;
}
#endif /* CONFIG_INTEGRATOR */
--- /dev/null
+#
+# (C) Copyright 2000-2005
+# Wolfgang Denk, DENX Software Engineering, wd@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 $(TOPDIR)/config.mk
+
+LIB = lib$(SOC).a
+
+OBJS = timer.o
+SOBJS = reset.o
+
+all: .depend $(LIB)
+
+$(LIB): $(OBJS) $(SOBJS)
+ $(AR) crv $@ $(OBJS) $(SOBJS)
+
+#########################################################################
+
+.depend: Makefile $(OBJS:.o=.c)
+ $(CC) -M $(CFLAGS) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
--- /dev/null
+/*
+ * armboot - Startup Code for ARM926EJS CPU-core
+ *
+ * Copyright (c) 2003 Texas Instruments
+ *
+ * ----- Adapted for OMAP1610 OMAP730 from ARM925t code ------
+ *
+ * Copyright (c) 2001 Marius Gröger <mag@sysgo.de>
+ * Copyright (c) 2002 Alex Züpke <azu@sysgo.de>
+ * Copyright (c) 2002 Gary Jennejohn <gj@denx.de>
+ * Copyright (c) 2003 Richard Woodruff <r-woodruff2@ti.com>
+ * Copyright (c) 2003 Kshitij <kshitij@ti.com>
+ *
+ * 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
+ */
+
+ .align 5
+.globl reset_cpu
+reset_cpu:
+ ldr r1, rstctl1 /* get clkm1 reset ctl */
+ mov r3, #0x0
+ strh r3, [r1] /* clear it */
+ mov r3, #0x8
+ strh r3, [r1] /* force dsp+arm reset */
+_loop_forever:
+ b _loop_forever
+
+rstctl1:
+ .word 0xfffece10
--- /dev/null
+/*
+ * (C) Copyright 2003
+ * Texas Instruments <www.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 2002-2004
+ * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
+ *
+ * (C) Copyright 2004
+ * Philippe Robin, ARM Ltd. <philippe.robin@arm.com>
+ *
+ * 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 <arm926ejs.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;
+
+int timer_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;
+}
+
+/*
+ * 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 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*/;
+}
+
+void reset_timer_masked (void)
+{
+ /* reset time */
+ lastdec = READ_TIMER; /* capure current decrementer value time */
+ timestamp = 0; /* start "advancing" time stamp from 0 */
+}
+
+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;
+}
+
+/* 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;
+}
bl do_fiq
#endif
-
-# ifdef CONFIG_INTEGRATOR
-
- /* Satisfied by Integrator routine (AP or CP) */
-
-#else
-
- .align 5
-.globl reset_cpu
-reset_cpu:
- ldr r1, rstctl1 /* get clkm1 reset ctl */
- mov r3, #0x0
- strh r3, [r1] /* clear it */
- mov r3, #0x8
- strh r3, [r1] /* force dsp+arm reset */
-_loop_forever:
- b _loop_forever
-
-rstctl1:
- .word 0xfffece10
-
-#endif /* #ifdef CONFIG_INTEGRATOR */
--- /dev/null
+#
+# (C) Copyright 2000-2005
+# Wolfgang Denk, DENX Software Engineering, wd@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 $(TOPDIR)/config.mk
+
+LIB = lib$(SOC).a
+
+OBJS = timer.o
+SOBJS = reset.o
+
+all: .depend $(LIB)
+
+$(LIB): $(OBJS) $(SOBJS)
+ $(AR) crv $@ $(OBJS) $(SOBJS)
+
+#########################################################################
+
+.depend: Makefile $(OBJS:.o=.c)
+ $(CC) -M $(CFLAGS) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
--- /dev/null
+/*
+ * armboot - Startup Code for ARM926EJS CPU-core
+ *
+ * Copyright (c) 2003 Texas Instruments
+ *
+ * ----- Adapted for OMAP1610 OMAP730 from ARM925t code ------
+ *
+ * Copyright (c) 2001 Marius Gröger <mag@sysgo.de>
+ * Copyright (c) 2002 Alex Züpke <azu@sysgo.de>
+ * Copyright (c) 2002 Gary Jennejohn <gj@denx.de>
+ * Copyright (c) 2003 Richard Woodruff <r-woodruff2@ti.com>
+ * Copyright (c) 2003 Kshitij <kshitij@ti.com>
+ *
+ * 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
+ */
+
+ .align 5
+.globl reset_cpu
+reset_cpu:
+ ldr r1, rstctl1 /* get clkm1 reset ctl */
+ mov r3, #0x0
+ strh r3, [r1] /* clear it */
+ mov r3, #0x8
+ strh r3, [r1] /* force dsp+arm reset */
+_loop_forever:
+ b _loop_forever
+
+rstctl1:
+ .word 0xfffece10
--- /dev/null
+/*
+ * (C) Copyright 2003
+ * Texas Instruments <www.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 2002-2004
+ * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
+ *
+ * (C) Copyright 2004
+ * Philippe Robin, ARM Ltd. <philippe.robin@arm.com>
+ *
+ * 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 <arm926ejs.h>
+
+#define TIMER_LOAD_VAL 0xffffffff
+
+/* macro to read the 32 bit timer */
+#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+4))
+
+static ulong timestamp;
+static ulong lastdec;
+
+/* nothing really to do with interrupts, just starts up a counter. */
+int timer_init (void)
+{
+ *(volatile ulong *)(CFG_TIMERBASE + 0) = CFG_TIMER_RELOAD; /* TimerLoad */
+ *(volatile ulong *)(CFG_TIMERBASE + 4) = CFG_TIMER_RELOAD; /* TimerValue */
+ *(volatile ulong *)(CFG_TIMERBASE + 8) = 0x8C;
+
+ /* init the timestamp and lastdec value */
+ reset_timer_masked();
+
+ 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 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*/;
+}
+
+void reset_timer_masked (void)
+{
+ /* reset time */
+ lastdec = READ_TIMER; /* capure current decrementer value time */
+ timestamp = 0; /* start "advancing" time stamp from 0 */
+}
+
+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;
+}
+
+/* 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;
+}
projects / u-boot.git / commitdiff