Merge branch 'master-sync' of git://git.denx.de/u-boot-arm

6 files changed, 355 insertions, 19 deletions

diff --git a/cpu/arm926ejs/kirkwood/Makefile b/cpu/arm926ejs/kirkwood/Makefile
index d73e2104eb..fc2cc03001 100644
--- a/cpu/arm926ejs/kirkwood/Makefile
+++ b/cpu/arm926ejs/kirkwood/Makefile
@@ -26,8 +26,8 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(SOC).a
 
-COBJS-y	= dram.o
-COBJS-y	+= cpu.o
+COBJS-y	= cpu.o
+COBJS-y	+= dram.o
 COBJS-y	+= mpp.o
 COBJS-y	+= timer.o
 
diff --git a/cpu/arm926ejs/spear/Makefile b/cpu/arm926ejs/spear/Makefile
new file mode 100755
index 0000000000..bf8dfa8c3c
--- /dev/null
+++ b/cpu/arm926ejs/spear/Makefile
@@ -0,0 +1,52 @@
+#
+# (C) Copyright 2000-2006
+# 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	= $(obj)lib$(SOC).a
+
+COBJS	:= reset.o \
+	   timer.o
+SOBJS	:=
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/cpu/arm_cortexa8/s5pc1xx/cache.c b/cpu/arm926ejs/spear/reset.c
index 8652a45ff0..73ad86da30 100644..100755
--- a/cpu/arm_cortexa8/s5pc1xx/cache.c
+++ b/cpu/arm926ejs/spear/reset.c
@@ -1,6 +1,6 @@
 /*
- * Copyright (C) 2009 Samsung Electronics
- * Minkyu Kang <mk7.kang@samsung.com>
+ * (C) Copyright 2009
+ * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
  *
  * See file CREDITS for list of people who contributed to this
  * project.
@@ -22,22 +22,33 @@
  */
 
 #include <common.h>
-#include <asm/cache.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/spr_syscntl.h>
 
-void l2_cache_enable(void)
+void reset_cpu(ulong ignored)
 {
-	unsigned long i;
+	struct syscntl_regs *syscntl_regs_p =
+	    (struct syscntl_regs *)CONFIG_SPEAR_SYSCNTLBASE;
 
-	__asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(i));
-	__asm__ __volatile__("orr %0, %0, #0x2":"=r"(i));
-	__asm__ __volatile__("mcr p15, 0, %0, c1, c0, 1":"=r"(i));
-}
+	printf("System is going to reboot ...\n");
 
-void l2_cache_disable(void)
-{
-	unsigned long i;
+	/*
+	 * This 1 second delay will allow the above message
+	 * to be printed before reset
+	 */
+	udelay((1000 * 1000));
+
+	/* Going into slow mode before resetting SOC */
+	writel(0x02, &syscntl_regs_p->scctrl);
+
+	/*
+	 * Writing any value to the system status register will
+	 * reset the SoC
+	 */
+	writel(0x00, &syscntl_regs_p->scsysstat);
 
-	__asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(i));
-	__asm__ __volatile__("bic %0, %0, #0x2":"=r"(i));
-	__asm__ __volatile__("mcr p15, 0, %0, c1, c0, 1":"=r"(i));
+	/* system will restart */
+	while (1)
+		;
 }
diff --git a/cpu/arm926ejs/spear/timer.c b/cpu/arm926ejs/spear/timer.c
new file mode 100755
index 0000000000..06858b4a13
--- /dev/null
+++ b/cpu/arm926ejs/spear/timer.c
@@ -0,0 +1,153 @@
+/*
+ * (C) Copyright 2009
+ * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.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 <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/spr_gpt.h>
+#include <asm/arch/spr_misc.h>
+
+#define GPT_RESOLUTION	(CONFIG_SPEAR_HZ_CLOCK / CONFIG_SPEAR_HZ)
+#define READ_TIMER()	(readl(&gpt_regs_p->count) & GPT_FREE_RUNNING)
+
+static struct gpt_regs *const gpt_regs_p =
+    (struct gpt_regs *)CONFIG_SPEAR_TIMERBASE;
+
+static struct misc_regs *const misc_regs_p =
+    (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
+
+static ulong timestamp;
+static ulong lastdec;
+
+int timer_init(void)
+{
+	u32 synth;
+
+	/* Prescaler setting */
+#if defined(CONFIG_SPEAR3XX)
+	writel(MISC_PRSC_CFG, &misc_regs_p->prsc2_clk_cfg);
+	synth = MISC_GPT4SYNTH;
+#elif defined(CONFIG_SPEAR600)
+	writel(MISC_PRSC_CFG, &misc_regs_p->prsc1_clk_cfg);
+	synth = MISC_GPT3SYNTH;
+#else
+# error Incorrect config. Can only be spear{600|300|310|320}
+#endif
+
+	writel(readl(&misc_regs_p->periph_clk_cfg) | synth,
+	       &misc_regs_p->periph_clk_cfg);
+
+	/* disable timers */
+	writel(GPT_PRESCALER_1 | GPT_MODE_AUTO_RELOAD, &gpt_regs_p->control);
+
+	/* load value for free running */
+	writel(GPT_FREE_RUNNING, &gpt_regs_p->compare);
+
+	/* auto reload, start timer */
+	writel(readl(&gpt_regs_p->control) | GPT_ENABLE, &gpt_regs_p->control);
+
+	reset_timer_masked();
+
+	return 0;
+}
+
+/*
+ * timer without interrupts
+ */
+
+void reset_timer(void)
+{
+	reset_timer_masked();
+}
+
+ulong get_timer(ulong base)
+{
+	return (get_timer_masked() / GPT_RESOLUTION) - base;
+}
+
+void set_timer(ulong t)
+{
+	timestamp = t;
+}
+
+void __udelay(unsigned long usec)
+{
+	ulong tmo;
+	ulong start = get_timer_masked();
+	ulong tenudelcnt = CONFIG_SPEAR_HZ_CLOCK / (1000 * 100);
+	ulong rndoff;
+
+	rndoff = (usec % 10) ? 1 : 0;
+
+	/* tenudelcnt timer tick gives 10 microsecconds delay */
+	tmo = ((usec / 10) + rndoff) * tenudelcnt;
+
+	while ((ulong) (get_timer_masked() - start) < tmo)
+		;
+}
+
+void reset_timer_masked(void)
+{
+	/* reset time */
+	lastdec = READ_TIMER();
+	timestamp = 0;
+}
+
+ulong get_timer_masked(void)
+{
+	ulong now = READ_TIMER();
+
+	if (now >= lastdec) {
+		/* normal mode */
+		timestamp += now - lastdec;
+	} else {
+		/* we have an overflow ... */
+		timestamp += now + GPT_FREE_RUNNING - lastdec;
+	}
+	lastdec = now;
+
+	return timestamp;
+}
+
+void udelay_masked(unsigned long usec)
+{
+	return udelay(usec);
+}
+
+/*
+ * 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)
+{
+	return CONFIG_SPEAR_HZ;
+}
diff --git a/cpu/arm_cortexa8/s5pc1xx/Makefile b/cpu/arm_cortexa8/s5pc1xx/Makefile
index e08d9d87b7..4f922e686a 100644
--- a/cpu/arm_cortexa8/s5pc1xx/Makefile
+++ b/cpu/arm_cortexa8/s5pc1xx/Makefile
@@ -28,9 +28,9 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(SOC).a
 
-SOBJS	= reset.o
+SOBJS	= cache.o
+SOBJS	+= reset.o
 
-COBJS	+= cache.o
 COBJS	+= clock.o
 COBJS	+= cpu_info.o
 COBJS	+= timer.o
diff --git a/cpu/arm_cortexa8/s5pc1xx/cache.S b/cpu/arm_cortexa8/s5pc1xx/cache.S
new file mode 100644
index 0000000000..23f527a485
--- /dev/null
+++ b/cpu/arm_cortexa8/s5pc1xx/cache.S
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2009 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * based on cpu/arm_cortexa8/omap3/cache.S
+ *
+ * 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 <asm/arch/cpu.h>
+
+.align 5
+.global invalidate_dcache
+.global l2_cache_enable
+.global l2_cache_disable
+
+/*
+ * invalidate_dcache()
+ * Invalidate the whole D-cache.
+ *
+ * Corrupted registers: r0-r5, r7, r9-r11
+ */
+invalidate_dcache:
+	stmfd	r13!, {r0 - r5, r7, r9 - r12, r14}
+
+	cmp	r0, #0xC100			@ check if the cpu is s5pc100
+
+	beq	finished_inval			@ s5pc100 doesn't need this
+						@ routine
+	mrc	p15, 1, r0, c0, c0, 1		@ read clidr
+	ands	r3, r0, #0x7000000		@ extract loc from clidr
+	mov	r3, r3, lsr #23			@ left align loc bit field
+	beq	finished_inval			@ if loc is 0, then no need to
+						@ clean
+	mov	r10, #0				@ start clean at cache level 0
+inval_loop1:
+	add	r2, r10, r10, lsr #1		@ work out 3x current cache
+						@ level
+	mov	r1, r0, lsr r2			@ extract cache type bits from
+						@ clidr
+	and	r1, r1, #7			@ mask of the bits for current
+						@ cache only
+	cmp	r1, #2				@ see what cache we have at
+						@ this level
+	blt	skip_inval			@ skip if no cache, or just
+						@ i-cache
+	mcr	p15, 2, r10, c0, c0, 0		@ select current cache level
+						@ in cssr
+	mov	r2, #0				@ operand for mcr SBZ
+	mcr	p15, 0, r2, c7, c5, 4		@ flush prefetch buffer to
+						@ sych the new cssr&csidr,
+						@ with armv7 this is 'isb',
+						@ but we compile with armv5
+	mrc	p15, 1, r1, c0, c0, 0		@ read the new csidr
+	and	r2, r1, #7			@ extract the length of the
+						@ cache lines
+	add	r2, r2, #4			@ add 4 (line length offset)
+	ldr	r4, =0x3ff
+	ands	r4, r4, r1, lsr #3		@ find maximum number on the
+						@ way size
+	clz	r5, r4				@ find bit position of way
+						@ size increment
+	ldr	r7, =0x7fff
+	ands	r7, r7, r1, lsr #13		@ extract max number of the
+						@ index size
+inval_loop2:
+	mov	r9, r4				@ create working copy of max
+						@ way size
+inval_loop3:
+	orr	r11, r10, r9, lsl r5		@ factor way and cache number
+						@ into r11
+	orr	r11, r11, r7, lsl r2		@ factor index number into r11
+	mcr	p15, 0, r11, c7, c6, 2		@ invalidate by set/way
+	subs	r9, r9, #1			@ decrement the way
+	bge	inval_loop3
+	subs	r7, r7, #1			@ decrement the index
+	bge	inval_loop2
+skip_inval:
+	add	r10, r10, #2			@ increment cache number
+	cmp	r3, r10
+	bgt	inval_loop1
+finished_inval:
+	mov	r10, #0				@ swith back to cache level 0
+	mcr	p15, 2, r10, c0, c0, 0		@ select current cache level
+						@ in cssr
+	mcr	p15, 0, r10, c7, c5, 4		@ flush prefetch buffer,
+						@ with armv7 this is 'isb',
+						@ but we compile with armv5
+
+	ldmfd	r13!, {r0 - r5, r7, r9 - r12, pc}
+
+l2_cache_enable:
+	push	{r0, r1, r2, lr}
+	mrc	15, 0, r3, cr1, cr0, 1
+	orr	r3, r3, #2
+	mcr	15, 0, r3, cr1, cr0, 1
+	pop	{r1, r2, r3, pc}
+
+l2_cache_disable:
+	push	{r0, r1, r2, lr}
+	mrc	15, 0, r3, cr1, cr0, 1
+	bic	r3, r3, #2
+	mcr	15, 0, r3, cr1, cr0, 1
+	pop	{r1, r2, r3, pc}