[U-Boot] [PATCHv1] ARM: Add Altera SOCFPGA Cyclone5

Pavel Machek pavel at denx.de
Sat Aug 25 14:05:38 CEST 2012


Hi!

> [snip]
> >> It's the omap-common/spl.c code with the bits for IH_OS_LINUX taken out
> >> :)  Can you please re-do your series on top of the SPL series I just
> >> posted that provides a common SPL framework?  Thanks!
> > 
> > I'll take a look. OTOH, ammount of code duplication here is quite low,
> > and redoing it on top of SPL series will mean delaying merge, right?
> 
> My hope is that since I got the SPL patches posted in time we can get
> them in for v2012.10 so no, this will only help your chances :)

Ok, this is promissed patch for comments. socfpga spl.c now got
reasonably smaller. It is on top of 

http://github.com/trini/u-boot WIP/spl-improvements

Now... can I leave spl_ram_load_image() where it is? Probably add some
#ifdef?

Dinh, does this look acceptable to you? Could we switch to absolute
addresses for stack/heap in the SPL?

Thanks,

								Pavel

diff --git a/MAINTAINERS b/MAINTAINERS
index c5a6f2f..df48dea 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -765,6 +765,11 @@ Nagendra T S  <nagendra at mistralsolutions.com>
 
    am3517_crane    ARM ARMV7 (AM35x SoC)
 
+Dinh Nguyen <dinguyen at altera.com>
+Chin Liang See <clsee at altera.com>
+
+	socfpga		socfpga_cyclone5
+
 Kyungmin Park <kyungmin.park at samsung.com>
 
 	apollon		ARM1136EJS
diff --git a/arch/arm/cpu/armv7/socfpga/Makefile b/arch/arm/cpu/armv7/socfpga/Makefile
new file mode 100644
index 0000000..376a4bd
--- /dev/null
+++ b/arch/arm/cpu/armv7/socfpga/Makefile
@@ -0,0 +1,51 @@
+#
+# (C) Copyright 2000-2003
+# Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+#
+# Copyright (C) 2012 Altera Corporation <www.altera.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 $(TOPDIR)/config.mk
+
+LIB	=  $(obj)lib$(SOC).o
+
+SOBJS	:= lowlevel_init.o
+COBJS-y	:= misc.o timer.o
+COBJS-$(CONFIG_SPL_BUILD) += spl.o
+
+COBJS	:= $(COBJS-y)
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS) $(SOBJS))
+
+all:	 $(obj).depend $(LIB)
+
+$(LIB):	$(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/arm/cpu/armv7/socfpga/config.mk b/arch/arm/cpu/armv7/socfpga/config.mk
new file mode 100644
index 0000000..b72ed1e
--- /dev/null
+++ b/arch/arm/cpu/armv7/socfpga/config.mk
@@ -0,0 +1,16 @@
+#
+# Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
+#
+# 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 "as is" WITHOUT ANY WARRANTY of any
+# kind, whether express or implied; without even the implied warranty
+# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+ifndef CONFIG_SPL_BUILD
+ALL-y	+= $(obj)u-boot.img
+endif
diff --git a/arch/arm/cpu/armv7/socfpga/lowlevel_init.S b/arch/arm/cpu/armv7/socfpga/lowlevel_init.S
new file mode 100644
index 0000000..815073e
--- /dev/null
+++ b/arch/arm/cpu/armv7/socfpga/lowlevel_init.S
@@ -0,0 +1,79 @@
+/*
+ *  Copyright (C) 2012 Altera Corporation <www.altera.com>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <version.h>
+
+/* Save the parameter pass in by previous boot loader */
+.global save_boot_params
+save_boot_params:
+	/* save the parameter here */
+
+	/*
+	 * Setup stack for exception, which is located
+	 * at the end of on-chip RAM. We don't expect exception prior to
+	 * relocation and if that happens, we won't worry -- it will overide
+	 * global data region as the code will goto reset. After relocation,
+	 * this region won't be used by other part of program.
+	 * Hence it is safe.
+	 */
+	ldr	r0, =CONFIG_SYS_INIT_RAM_ADDR
+	ldr	r1, =CONFIG_SYS_INIT_RAM_SIZE
+	add	r0, r0, r1
+	ldr	r1, =IRQ_STACK_START_IN
+	str	r0, [r1]
+
+	bx	lr
+
+
+/* Set up the platform, once the cpu has been initialized */
+.globl lowlevel_init
+lowlevel_init:
+
+	/* Remap */
+#ifdef CONFIG_SPL_BUILD
+	/*
+	 * SPL : configure the remap (L3 NIC-301 GPV)
+	 * so the on-chip RAM at lower memory instead ROM.
+	 */
+	ldr	r0, =SOCFPGA_L3REGS_ADDRESS
+	mov	r1, #0x19
+	str	r1, [r0]
+#else
+	/*
+	 * U-Boot : configure the remap (L3 NIC-301 GPV)
+	 * so the SDRAM at lower memory instead on-chip RAM.
+	 */
+	ldr	r0, =SOCFPGA_L3REGS_ADDRESS
+	mov	r1, #0x2
+	str	r1, [r0]
+
+	/* Private components security */
+
+	/*
+	 * U-Boot : configure private timer, global timer and cpu
+	 * component access as non secure for kernel stage (as required
+	 * by kernel)
+	 */
+	mrc	p15,4,r0,c15,c0,0
+	add	r1, r0, #0x54
+	ldr	r2, [r1]
+	orr	r2, r2, #0xff
+	orr	r2, r2, #0xf00
+	str	r2, [r1]
+#endif	/* #ifdef CONFIG_SPL_BUILD */
+	mov	pc, lr
diff --git a/arch/arm/cpu/armv7/socfpga/misc.c b/arch/arm/cpu/armv7/socfpga/misc.c
new file mode 100644
index 0000000..b906701
--- /dev/null
+++ b/arch/arm/cpu/armv7/socfpga/misc.c
@@ -0,0 +1,54 @@
+/*
+ *  Copyright (C) 2012 Altera Corporation <www.altera.com>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/reset_manager.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct socfpga_reset_manager *reset_manager_base =
+		(void *)SOCFPGA_RSTMGR_ADDRESS;
+
+/*
+ * Write the reset manager register to cause reset
+ */
+void reset_cpu(ulong addr)
+{
+	/* request a warm reset */
+	writel(RSTMGR_CTRL_SWWARMRSTREQ_LSB, &reset_manager_base->ctrl);
+	/* 
+	 * infinite loop here as watchdog will trigger and reset
+	 * the processor 
+	 */
+	while (1)
+		;
+}
+
+/*
+ * Release peripherals from reset based on handoff
+ */
+void reset_deassert_peripherals_handoff(void)
+{
+	writel(0, &reset_manager_base->per_mod_reset);
+}
+
+int dram_init(void)
+{
+	gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
+	return 0;
+}
diff --git a/arch/arm/cpu/armv7/socfpga/spl.c b/arch/arm/cpu/armv7/socfpga/spl.c
new file mode 100644
index 0000000..ca5f4cf
--- /dev/null
+++ b/arch/arm/cpu/armv7/socfpga/spl.c
@@ -0,0 +1,69 @@
+/*
+ *  Copyright (C) 2012 Altera Corporation <www.altera.com>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/u-boot.h>
+#include <asm/utils.h>
+#include <version.h>
+#include <image.h>
+#include <malloc.h>
+#include <asm/arch/reset_manager.h>
+#include <spl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+extern void __malloc_start, __malloc_end, __stack_start;
+
+/*
+ * Console Initialization
+ */
+static void spl_console_init(void)
+{
+	gd->flags |= GD_FLG_RELOC;
+	gd->baudrate = CONFIG_BAUDRATE;
+
+	/* serial communications setup */
+	serial_init();
+	gd->have_console = 1;
+}
+
+u32 spl_boot_device(void)
+{
+	return BOOT_DEVICE_RAM;
+}
+
+/*
+ * Board initialization after bss clearance
+ */
+void spl_board_init(void)
+{
+	/* init timer for enabling delay function */
+	timer_init();
+
+	/* de-assert reset for peripherals and bridges based on handoff */
+	reset_deassert_peripherals_handoff();
+
+	/* enable console uart printing */
+	spl_console_init();
+
+	/* setup MALLOC after clocks going faster */
+	mem_malloc_init((ulong) &__malloc_start,
+			(&__malloc_end - &__malloc_start));
+
+	puts("SPL Boot\n");
+}
diff --git a/arch/arm/cpu/armv7/socfpga/timer.c b/arch/arm/cpu/armv7/socfpga/timer.c
new file mode 100644
index 0000000..28da4d0
--- /dev/null
+++ b/arch/arm/cpu/armv7/socfpga/timer.c
@@ -0,0 +1,149 @@
+/*
+ *  Copyright (C) 2012 Altera Corporation <www.altera.com>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/timer.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct socfpga_timer *timer_base = (void *)CONFIG_SYS_TIMERBASE;
+
+/*
+ * Timer initialization
+ */
+int timer_init(void)
+{
+	writel(TIMER_LOAD_VAL, &timer_base->load_val);
+	writel(TIMER_LOAD_VAL, &timer_base->curr_val);
+	writel((readl((&timer_base->ctrl)) | 0x3),
+		(&timer_base->ctrl));
+	return 0;
+}
+
+static u32 read_timer(void)
+{
+	return readl(&timer_base->curr_val);
+}
+
+/*
+ * Delay x useconds
+ */
+void __udelay(unsigned long usec)
+{
+	unsigned long now, last;
+	/*
+	 * get the tmo value based on timer clock speed
+	 * tmo = delay required / period of timer clock
+	 */
+	long tmo = usec * CONFIG_TIMER_CLOCK_KHZ / 1000;
+
+	last = read_timer();
+	while (tmo > 0) {
+		now = read_timer();
+		if (last >= now)
+			/* normal mode (non roll) */
+			tmo -= last - now;
+		else
+			/* we have overflow of the count down timer */
+			tmo -= TIMER_LOAD_VAL - last + now;
+		last = now;
+	}
+}
+
+/*
+ * Get the timer value
+ */
+ulong get_timer(ulong base)
+{
+	return get_timer_masked() - base;
+}
+
+/*
+ * Timer : get the time difference
+ * Unit of tick is based on the CONFIG_SYS_HZ
+ */
+ulong get_timer_masked(void)
+{
+	/* current tick value */
+	ulong now = read_timer() / (CONFIG_TIMER_CLOCK_KHZ/CONFIG_SYS_HZ);
+	if (gd->lastinc >= now) {
+		/* normal mode (non roll) */
+		/* move stamp forward with absolute diff ticks */
+		gd->tbl += gd->lastinc - now;
+	} else {
+		/* we have overflow of the count down timer */
+		gd->tbl += TIMER_LOAD_VAL - gd->lastinc + now;
+	}
+	gd->lastinc = now;
+	return gd->tbl;
+}
+
+/*
+ * Reset the timer
+ */
+void reset_timer(void)
+{
+	/* capture current decrementer value time */
+	gd->lastinc = read_timer() / (CONFIG_TIMER_CLOCK_KHZ/CONFIG_SYS_HZ);
+	/* start "advancing" time stamp from 0 */
+	gd->tbl = 0;
+}
+
+/*
+ * Delay function in number of clocks (not in time unit).
+ *
+ * Below is an example of use case:
+ * > reset_timer_count();
+ * > start = get_timer_count (0);
+ * > while (get_timer (start) < num_count) {...}
+ */
+
+/*
+ * Get the timer count value
+ */
+ulong get_timer_count_masked(void)
+{
+	/* current tick value */
+	ulong now = read_timer();
+	if (gd->lastinc >= now) {
+		/* normal mode (non roll) */
+		/* move stamp forward with absolute diff ticks */
+		gd->tbl += gd->lastinc - now;
+	} else {
+		/* we have overflow of the count down timer */
+		gd->tbl += TIMER_LOAD_VAL - gd->lastinc + now;
+	}
+	gd->lastinc = now;
+	return gd->tbl;
+}
+
+ulong get_timer_count(ulong base)
+{
+	return get_timer_masked() - base;
+}
+
+/*
+ * Reset the timer
+ */
+void reset_timer_count(void)
+{
+	/* capture current decrementer value time */
+	gd->lastinc = read_timer();
+	/* start "advancing" time stamp from 0 */
+	gd->tbl = 0;
+}
diff --git a/arch/arm/cpu/armv7/socfpga/u-boot-spl.lds b/arch/arm/cpu/armv7/socfpga/u-boot-spl.lds
new file mode 100644
index 0000000..de74341
--- /dev/null
+++ b/arch/arm/cpu/armv7/socfpga/u-boot-spl.lds
@@ -0,0 +1,60 @@
+/*
+ *  Copyright (C) 2012 Altera Corporation <www.altera.com>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+	. = 0x00000000;
+
+	. = ALIGN(4);
+	.text	:
+	{
+		arch/arm/cpu/armv7/start.o	(.text)
+		*(.text*)
+	}
+
+	. = ALIGN(4);
+	.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
+
+	. = ALIGN(4);
+	.data : { *(SORT_BY_ALIGNMENT(.data*)) }
+
+	. = ALIGN(4);
+	__image_copy_end = .;
+	_end = .;
+
+	.bss : {
+		. = ALIGN(4);
+		__bss_start = .;
+		*(.bss*)
+		. = ALIGN(4);
+		__bss_end__ = .;
+	}
+
+	. = . + 4;
+	. = ALIGN(8);
+	__malloc_start = .;
+	. = . + CONFIG_SPL_MALLOC_SIZE;
+	__malloc_end = .;
+
+	. = . + 4;
+	. = . + CONFIG_SPL_STACK_SIZE;
+	. = ALIGN(8);
+	__stack_start = .;
+}
diff --git a/arch/arm/include/asm/arch-socfpga/reset_config.h b/arch/arm/include/asm/arch-socfpga/reset_config.h
new file mode 100644
index 0000000..e69de29
diff --git a/arch/arm/include/asm/arch-socfpga/reset_manager.h b/arch/arm/include/asm/arch-socfpga/reset_manager.h
new file mode 100644
index 0000000..d9d2c1c
--- /dev/null
+++ b/arch/arm/include/asm/arch-socfpga/reset_manager.h
@@ -0,0 +1,37 @@
+/*
+ *  Copyright (C) 2012 Altera Corporation <www.altera.com>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef	_RESET_MANAGER_H_
+#define	_RESET_MANAGER_H_
+
+void reset_cpu(ulong addr);
+void reset_deassert_peripherals_handoff(void);
+
+struct socfpga_reset_manager {
+	u32	padding1;
+	u32	ctrl;
+	u32	padding2;
+	u32	padding3;
+	u32	mpu_mod_reset;
+	u32	per_mod_reset;
+	u32	per2_mod_reset;
+	u32	brg_mod_reset;
+};
+
+#define RSTMGR_CTRL_SWWARMRSTREQ_LSB 1
+
+#endif /* _RESET_MANAGER_H_ */
diff --git a/arch/arm/include/asm/arch-socfpga/socfpga_base_addrs.h b/arch/arm/include/asm/arch-socfpga/socfpga_base_addrs.h
new file mode 100644
index 0000000..f353eb2
--- /dev/null
+++ b/arch/arm/include/asm/arch-socfpga/socfpga_base_addrs.h
@@ -0,0 +1,27 @@
+/*
+ *  Copyright (C) 2012 Altera Corporation <www.altera.com>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _SOCFPGA_BASE_ADDRS_H_
+#define _SOCFPGA_BASE_ADDRS_H_
+
+#define SOCFPGA_L3REGS_ADDRESS 0xff800000
+#define SOCFPGA_UART0_ADDRESS 0xffc02000
+#define SOCFPGA_UART1_ADDRESS 0xffc03000
+#define SOCFPGA_OSC1TIMER0_ADDRESS 0xffd00000
+#define SOCFPGA_RSTMGR_ADDRESS 0xffd05000
+
+#endif /* _SOCFPGA_BASE_ADDRS_H_ */
diff --git a/arch/arm/include/asm/arch-socfpga/spl.h b/arch/arm/include/asm/arch-socfpga/spl.h
new file mode 100644
index 0000000..68ceec6
--- /dev/null
+++ b/arch/arm/include/asm/arch-socfpga/spl.h
@@ -0,0 +1 @@
+#define BOOT_DEVICE_RAM 1
diff --git a/arch/arm/include/asm/arch-socfpga/timer.h b/arch/arm/include/asm/arch-socfpga/timer.h
new file mode 100644
index 0000000..830c94a
--- /dev/null
+++ b/arch/arm/include/asm/arch-socfpga/timer.h
@@ -0,0 +1,29 @@
+/*
+ *  Copyright (C) 2012 Altera Corporation <www.altera.com>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _SOCFPGA_TIMER_H_
+#define _SOCFPGA_TIMER_H_
+
+struct socfpga_timer {
+	u32	load_val;
+	u32	curr_val;
+	u32	ctrl;
+	u32	eoi;
+	u32	int_stat;
+};
+
+#endif
diff --git a/arch/arm/lib/spl.c b/arch/arm/lib/spl.c
index 2d1f47a..8c8806e 100644
--- a/arch/arm/lib/spl.c
+++ b/arch/arm/lib/spl.c
@@ -41,8 +41,9 @@ extern char __bss_start[], __bss_end__[];
  */
 void __weak board_init_f(ulong dummy)
 {
+  extern void __stack_start;
 	/* Set the stack pointer. */
-	asm volatile("mov sp, %0\n" : : "r"(CONFIG_SPL_STACK));
+	asm volatile("mov sp, %0\n" : : "r"(&__stack_start));
 
 	/* Clear the BSS. */
 	memset(__bss_start, 0, __bss_end__ - __bss_start);
diff --git a/board/altera/socfpga_cyclone5/Makefile b/board/altera/socfpga_cyclone5/Makefile
new file mode 100644
index 0000000..43bbc37
--- /dev/null
+++ b/board/altera/socfpga_cyclone5/Makefile
@@ -0,0 +1,50 @@
+#
+# (C) Copyright 2001-2006
+# Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+# (C) Copyright 2010, Thomas Chou <thomas at wytron.com.tw>
+#
+# 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	= $(obj)lib$(BOARD).o
+
+COBJS	:= socfpga_cyclone5.o
+
+SRCS	:= $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+
+$(LIB):	$(obj).depend $(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+clean:
+	rm -f $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/altera/socfpga_cyclone5/socfpga_cyclone5.c b/board/altera/socfpga_cyclone5/socfpga_cyclone5.c
new file mode 100644
index 0000000..1248e3d
--- /dev/null
+++ b/board/altera/socfpga_cyclone5/socfpga_cyclone5.c
@@ -0,0 +1,97 @@
+/*
+ *  Copyright (C) 2012 Altera Corporation <www.altera.com>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <common.h>
+#include <asm/arch/reset_manager.h>
+#include <asm/io.h>
+
+#include <netdev.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void show_boot_progress(int progress)
+{
+	debug("Boot reached stage %d\n", progress);
+}
+
+static inline void delay(unsigned long loops)
+{
+	__asm__ volatile ("1:\n"
+		"subs %0, %1, #1\n"
+		"bne 1b" : "=r" (loops) : "0" (loops));
+}
+
+/*
+ * Print CPU information
+ */
+int print_cpuinfo(void)
+{
+	puts("CPU   : Altera SOCFPGA Platform\n");
+	return 0;
+}
+
+/*
+ * Print Board information
+ */
+int checkboard(void)
+{
+	puts("BOARD : Altera SOCFPGA Cyclone5 Board\n");
+	return 0;
+}
+
+/*
+ * Initialization function which happen at early stage of c code
+ */
+int board_early_init_f(void)
+{
+	return 0;
+}
+
+/*
+ * Miscellaneous platform dependent initialisations
+ */
+int board_init(void)
+{
+	icache_enable();
+	return 0;
+}
+
+/*
+ * miscellaneous platform dependent initialisations
+ */
+int misc_init_r(void)
+{
+	/* Set to "n" for not verifying the uImage */
+	setenv("verify", "n");
+	return 0;
+}
+
+#if defined(CONFIG_SYS_CONSOLE_IS_IN_ENV) && defined(CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE)
+int overwrite_console(void)
+{
+	return 0;
+}
+#endif
+
+/*
+ * DesignWare Ethernet initialization
+ */
+/* We know all the init functions have been run now */
+int board_eth_init(bd_t *bis)
+{
+	return 0;
+}
diff --git a/boards.cfg b/boards.cfg
index fdb84ad..1b5c860 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -261,6 +261,7 @@ seaboard                     arm         armv7       seaboard            nvidia
 ventana                      arm         armv7       ventana             nvidia         tegra2
 whistler                     arm         armv7       whistler            nvidia         tegra2
 u8500_href                   arm         armv7       u8500               st-ericsson    u8500
+socfpga_cyclone5              arm         armv7      socfpga_cyclone5    altera		    socfpga
 actux1_4_16                  arm         ixp         actux1              -              -           actux1:FLASH2X2
 actux1_4_32                  arm         ixp         actux1              -              -           actux1:FLASH2X2,RAM_32MB
 actux1_8_16                  arm         ixp         actux1              -              -           actux1:FLASH1X8
diff --git a/common/spl/spl.c b/common/spl/spl.c
index eaea1c8..b87df65 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -78,6 +78,7 @@ void spl_parse_image_header(const struct image_header *header)
 	u32 header_size = sizeof(struct image_header);
 
 	if (__be32_to_cpu(header->ih_magic) == IH_MAGIC) {
+		/* Valid image. Extract information out of header */
 		spl_image.size = __be32_to_cpu(header->ih_size) + header_size;
 		spl_image.entry_point = __be32_to_cpu(header->ih_load);
 		/* Load including the header */
@@ -115,6 +116,21 @@ static void __noreturn jump_to_image_no_args(void)
 	image_entry((u32 *)boot_params_ptr_addr);
 }
 
+static void spl_ram_load_image(void)
+{
+	u32 err;
+	const struct image_header *header;
+
+	/* get the header */
+	/* it will point to a address defined by handoff which
+	will tell where the image located inside the flash. For now,
+	it will temporary fixed to address pointed by U-Boot */
+	header = (struct image_header *)
+		(CONFIG_SYS_TEXT_BASE -	sizeof(struct image_header));
+
+	spl_parse_image_header(header);
+}
+
 void board_init_r(gd_t *dummy1, ulong dummy2)
 {
 	u32 boot_device;
@@ -132,6 +148,9 @@ void board_init_r(gd_t *dummy1, ulong dummy2)
 	boot_device = spl_boot_device();
 	debug("boot device - %d\n", boot_device);
 	switch (boot_device) {
+	case BOOT_DEVICE_RAM:
+		spl_ram_load_image();
+		break;
 #ifdef CONFIG_SPL_MMC_SUPPORT
 	case BOOT_DEVICE_MMC1:
 	case BOOT_DEVICE_MMC2:
diff --git a/include/common.h b/include/common.h
index 55025c0..469a3af 100644
--- a/include/common.h
+++ b/include/common.h
@@ -704,7 +704,9 @@ void	external_interrupt (struct pt_regs *);
 void	irq_install_handler(int, interrupt_handler_t *, void *);
 void	irq_free_handler   (int);
 void	reset_timer	   (void);
-ulong	get_timer	   (ulong base);
+ulong	get_timer(ulong base);
+void	reset_timer_count(void);
+ulong	get_timer_count(ulong base);
 void	enable_interrupts  (void);
 int	disable_interrupts (void);
 
diff --git a/include/configs/socfpga_cyclone5.h b/include/configs/socfpga_cyclone5.h
new file mode 100644
index 0000000..d001cbb
--- /dev/null
+++ b/include/configs/socfpga_cyclone5.h
@@ -0,0 +1,242 @@
+/*
+ *  Copyright (C) 2012 Altera Corporation <www.altera.com>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include <asm/arch/socfpga_base_addrs.h>
+
+/*
+ * High level configuration
+ */
+
+#define CONFIG_ARMV7
+#define CONFIG_L2_OFF
+#define CONFIG_SYS_DCACHE_OFF
+#undef CONFIG_USE_IRQ
+
+#define CONFIG_MISC_INIT_R
+#define CONFIG_SINGLE_BOOTLOADER
+#define CONFIG_SOCFPGA
+
+#define CONFIG_SYS_TEXT_BASE		0x08000040
+#define V_NS16550_CLK			1000000
+#define CONFIG_BAUDRATE			57600
+#define CONFIG_SYS_HZ			1000
+#define CONFIG_TIMER_CLOCK_KHZ		2400
+#define CONFIG_SYS_LOAD_ADDR		0x7fc0
+
+/* Console I/O Buffer Size */
+#define CONFIG_SYS_CBSIZE		256
+/* Monitor Command Prompt */
+#define CONFIG_SYS_PROMPT		"SOCFPGA_CYCLONE5 # "
+#define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE + \
+					sizeof(CONFIG_SYS_PROMPT) + 16)
+
+/*
+ * Display CPU and Board Info
+ */
+#define CONFIG_DISPLAY_CPUINFO
+#define CONFIG_DISPLAY_BOARDINFO
+
+/*
+ * Enable early stage initialization at C environment
+ */
+#define CONFIG_BOARD_EARLY_INIT_F
+
+/* flat device tree */
+#define CONFIG_OF_LIBFDT
+/* skip updating the FDT blob */
+#define CONFIG_FDT_BLOB_SKIP_UPDATE
+/* Initial Memory map size for Linux, minus 4k alignment for DFT blob */
+#define CONFIG_SYS_BOOTMAPSZ		((256*1024*1024) - (4*1024))
+
+/*
+ * Memory allocation (MALLOC)
+ */
+/* Room required on the stack for the environment data */
+#define CONFIG_ENV_SIZE			1024
+/* Size of DRAM reserved for malloc() use */
+#define CONFIG_SYS_MALLOC_LEN		(CONFIG_ENV_SIZE + 128*1024)
+
+/*
+ * Stack sizes
+ * The stack sizes are set up in start.S using the settings below
+ */
+/* regular stack */
+#define CONFIG_STACKSIZE		(128 << 10)
+#ifdef CONFIG_USE_IRQ
+/* IRQ stack */
+#define CONFIG_STACKSIZE_IRQ		(4 << 10)
+/* FIQ stack */
+#define CONFIG_STACKSIZE_FIQ		(4 << 10)
+#endif
+/* SP location before relocation, must use scratch RAM */
+#define CONFIG_SYS_INIT_RAM_ADDR	0xFFFF0000
+/* Reserving 0x100 space at back of scratch RAM for debug info */
+#define CONFIG_SYS_INIT_RAM_SIZE	(0x10000 - 0x100)
+/* Stack pointer prior relocation, must situated at on-chip RAM */
+#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_INIT_RAM_ADDR + \
+					 CONFIG_SYS_INIT_RAM_SIZE - \
+					 GENERATED_GBL_DATA_SIZE)
+
+
+/*
+ * Command line configuration.
+ */
+#define CONFIG_SYS_NO_FLASH
+#include <config_cmd_default.h>
+/* FAT file system support */
+#define CONFIG_CMD_FAT
+
+
+/*
+ * Misc
+ */
+#define CONFIG_DOS_PARTITION            1
+
+#ifdef CONFIG_SPL_BUILD
+#undef CONFIG_PARTITIONS
+#endif
+
+/*
+ * Environment setup
+ */
+
+/* Delay before automatically booting the default image */
+#define CONFIG_BOOTDELAY		3
+/* Enable auto completion of commands using TAB */
+#define CONFIG_AUTO_COMPLETE
+/* use "hush" command parser */
+#define CONFIG_SYS_HUSH_PARSER
+#define CONFIG_SYS_PROMPT_HUSH_PS2	"> "
+#define CONFIG_CMD_RUN
+
+#define CONFIG_BOOTCOMMAND "run ramboot"
+
+/*
+ * arguments passed to the bootm command. The value of
+ * CONFIG_BOOTARGS goes into the environment value "bootargs".
+ * Do note the value will overide also the chosen node in FDT blob.
+ */
+#define CONFIG_BOOTARGS "console=ttyS0,57600,mem=256M at 0x0"
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"loadaddr= " MK_STR(CONFIG_SYS_LOAD_ADDR) "\0" \
+	"ramboot=setenv bootargs " CONFIG_BOOTARGS ";" \
+		"bootm ${loadaddr} - ${fdt_addr}\0" \
+	"bootimage=uImage\0" \
+	"fdt_addr=100\0" \
+	"fsloadcmd=ext2load\0" \
+		"bootm ${loadaddr} - ${fdt_addr}\0" \
+	"qspiroot=/dev/mtdblock0\0" \
+	"qspirootfstype=jffs2\0" \
+	"qspiboot=setenv bootargs " CONFIG_BOOTARGS \
+		" root=${qspiroot} rw rootfstype=${qspirootfstype};"\
+		"bootm ${loadaddr} - ${fdt_addr}\0"
+
+/* using environment setting for stdin, stdout, stderr */
+#define CONFIG_SYS_CONSOLE_IS_IN_ENV
+/* Enable the call to overwrite_console() */
+#define CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
+/* Enable overwrite of previous console environment settings */
+#define CONFIG_SYS_CONSOLE_ENV_OVERWRITE
+
+/* max number of command args	 */
+#define CONFIG_SYS_MAXARGS		16
+
+
+/*
+ * Hardware drivers
+ */
+
+/*
+ * SDRAM Memory Map
+ */
+/* We have 1 bank of DRAM */
+#define CONFIG_NR_DRAM_BANKS		1
+/* SDRAM Bank #1 */
+#define CONFIG_SYS_SDRAM_BASE		0x00000000
+/* SDRAM memory size */
+#define PHYS_SDRAM_1_SIZE		0x80000000
+
+#define PHYS_SDRAM_1			CONFIG_SYS_SDRAM_BASE
+#define CONFIG_SYS_MEMTEST_START	0x00000000
+#define CONFIG_SYS_MEMTEST_END		PHYS_SDRAM_1_SIZE
+
+/*
+ * NS16550 Configuration
+ */
+#define UART0_BASE			SOCFPGA_UART0_ADDRESS
+#define CONFIG_SYS_NS16550
+#define CONFIG_SYS_NS16550_SERIAL
+#define CONFIG_SYS_NS16550_REG_SIZE	-4
+#define CONFIG_SYS_NS16550_CLK          V_NS16550_CLK
+#define CONFIG_CONS_INDEX               1
+#define CONFIG_SYS_NS16550_COM1		UART0_BASE
+
+#define CONFIG_SYS_BAUDRATE_TABLE {4800, 9600, 19200, 38400, 57600, 115200}
+
+/*
+ * FLASH
+ */
+#define CONFIG_SYS_NO_FLASH
+
+/*
+ * L4 OSC1 Timer 0
+ */
+/* This timer use eosc1 where the clock frequency is fixed
+ * throughout any condition */
+#define CONFIG_SYS_TIMERBASE		SOCFPGA_OSC1TIMER0_ADDRESS
+
+/* reload value when timer count to zero */
+#define TIMER_LOAD_VAL			0xFFFFFFFF
+
+#define CONFIG_ENV_IS_NOWHERE
+
+/*
+ * SPL "Second Program Loader" aka Initial Software
+ */
+
+/* Enable building of SPL globally */
+#define CONFIG_SPL
+#define CONFIG_SPL_FRAMEWORK
+
+/* TEXT_BASE for linking the SPL binary */
+#define CONFIG_SPL_TEXT_BASE		0xFFFF0000
+
+/* Stack size for SPL */
+#define CONFIG_SPL_STACK_SIZE		(4 * 1024)
+
+/* MALLOC size for SPL */
+#define CONFIG_SPL_MALLOC_SIZE		(5 * 1024)
+
+#define CONFIG_SPL_SERIAL_SUPPORT
+#define CONFIG_SPL_BOARD_INIT
+
+#define CHUNKSZ_CRC32			(1 * 1024)
+
+#define CONFIG_CRC32_VERIFY
+
+/* Linker script for SPL */
+#define CONFIG_SPL_LDSCRIPT "arch/arm/cpu/armv7/socfpga/u-boot-spl.lds"
+
+/* Support for common/libcommon.o in SPL binary */
+#define CONFIG_SPL_LIBCOMMON_SUPPORT
+/* Support for lib/libgeneric.o in SPL binary */
+#define CONFIG_SPL_LIBGENERIC_SUPPORT
+
+#endif	/* __CONFIG_H */
diff --git a/spl/Makefile b/spl/Makefile
index f96c08e4..d757448 100644
--- a/spl/Makefile
+++ b/spl/Makefile
@@ -58,6 +58,7 @@ LIBS-$(CONFIG_SPL_NAND_SUPPORT) += drivers/mtd/nand/libnand.o
 LIBS-$(CONFIG_SPL_ONENAND_SUPPORT) += drivers/mtd/onenand/libonenand.o
 LIBS-$(CONFIG_SPL_DMA_SUPPORT) += drivers/dma/libdma.o
 LIBS-$(CONFIG_SPL_POST_MEM_SUPPORT) += post/drivers/memory.o
+LIBS-$(CONFIG_SPL_LIBGENERIC_SUPPORT) += lib/libgeneric.o
 
 ifneq ($(CONFIG_AM33XX)$(CONFIG_OMAP34XX)$(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX),)
 LIBS-y += $(CPUDIR)/omap-common/libomap-common.o


-- 
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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