ARM: Add Altera SOCFPGA Cyclone5
Add minimal support for Altera's SOCFPGA Cyclone 5 hardware.
Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
Signed-off-by: Chin Liang See <clsee@altera.com>
Signed-off-by: Pavel Machek <pavel@denx.de>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Tom Trini <trini@ti.com>
Cc: Wolfgang Denx <wd@denx.de>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Stefan Roese <sr@denx.de>
----
v8: Remove no_return attribute for reset_cpu
Based on v2012.10-rc2
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@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..001b37d
--- /dev/null
+++ b/arch/arm/cpu/armv7/socfpga/lowlevel_init.S
@@ -0,0 +1,77 @@
+/*
+ * 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 + CONFIG_SYS_INIT_RAM_SIZE)
+ 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..fa16424
--- /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..944238b
--- /dev/null
+++ b/arch/arm/cpu/armv7/socfpga/spl.c
@@ -0,0 +1,48 @@
+/*
+ * 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;
+
+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 */
+ preloader_console_init();
+}
diff --git a/arch/arm/cpu/armv7/socfpga/timer.c b/arch/arm/cpu/armv7/socfpga/timer.c
new file mode 100644
index 0000000..321e9b4
--- /dev/null
+++ b/arch/arm/cpu/armv7/socfpga/timer.c
@@ -0,0 +1,104 @@
+/*
+ * 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;
+}
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..7cd409c
--- /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/>.
+ */
+
+MEMORY { .sdram : ORIGIN = (0), LENGTH = (0xffffffff) }
+
+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*)
+ } >.sdram
+
+ . = ALIGN(4);
+ .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) } >.sdram
+
+ . = ALIGN(4);
+ .data : { *(SORT_BY_ALIGNMENT(.data*)) } >.sdram
+
+ . = ALIGN(4);
+ __image_copy_end = .;
+ _end = .;
+
+ .bss : {
+ . = ALIGN(4);
+ __bss_start = .;
+ *(.bss*)
+ . = ALIGN(4);
+ __bss_end__ = .;
+ } >.sdram
+
+ . = ALIGN(8);
+ __malloc_start = .;
+ . = . + CONFIG_SPL_MALLOC_SIZE;
+ __malloc_end = .;
+
+ . = . + CONFIG_SPL_STACK_SIZE;
+ . = ALIGN(8);
+ __stack_start = .;
+}
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..efd0c06
--- /dev/null
+++ b/arch/arm/include/asm/arch-socfpga/spl.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2012 Pavel Machek <pavel@denx.de>
+ *
+ * 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_SPL_H_
+#define _SOCFPGA_SPL_H_
+
+/* Symbols from linker script */
+extern char __malloc_start, __malloc_end, __stack_start;
+
+#define BOOT_DEVICE_RAM 1
+
+#endif
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