Merge 'u-boot-microblaze/mainline/arm' into 'u-boot-arm/master'

This pulls the three following ZYNQ commits into ARM master:

7dca54f8: xilinx: zynq: Enable DCC and create new zynq_dcc board
59c651f4: arm: zynq: Add SLCR support with system reset
00ed3458: arm: zynq: Add lowlevel initialization to C

3 files changed, 91 insertions, 1 deletions

diff --git a/arch/arm/cpu/armv7/zynq/Makefile b/arch/arm/cpu/armv7/zynq/Makefile
index 499ace4..388085d 100644
--- a/arch/arm/cpu/armv7/zynq/Makefile
+++ b/arch/arm/cpu/armv7/zynq/Makefile
@@ -30,6 +30,7 @@ LIB	= $(obj)lib$(SOC).o
 
 COBJS-y	:= timer.o
 COBJS-y	+= cpu.o
+COBJS-y	+= slcr.o
 
 COBJS	:= $(COBJS-y)
 
diff --git a/arch/arm/cpu/armv7/zynq/cpu.c b/arch/arm/cpu/armv7/zynq/cpu.c
index ab615cc..e8f4c19 100644
--- a/arch/arm/cpu/armv7/zynq/cpu.c
+++ b/arch/arm/cpu/armv7/zynq/cpu.c
@@ -21,11 +21,37 @@
  * MA 02111-1307 USA
  */
 #include <common.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/hardware.h>
 
-inline void lowlevel_init(void) {}
+void lowlevel_init(void)
+{
+	zynq_slcr_unlock();
+	/* remap DDR to zero, FILTERSTART */
+	writel(0, &scu_base->filter_start);
+
+	/* Device config APB, unlock the PCAP */
+	writel(0x757BDF0D, &devcfg_base->unlock);
+	writel(0xFFFFFFFF, &devcfg_base->rom_shadow);
+
+	/* OCM_CFG, Mask out the ROM, map ram into upper addresses */
+	writel(0x1F, &slcr_base->ocm_cfg);
+	/* FPGA_RST_CTRL, clear resets on AXI fabric ports */
+	writel(0x0, &slcr_base->fpga_rst_ctrl);
+	/* TZ_DDR_RAM, Set DDR trust zone non-secure */
+	writel(0xFFFFFFFF, &slcr_base->trust_zone);
+	/* Set urgent bits with register */
+	writel(0x0, &slcr_base->ddr_urgent_sel);
+	/* Urgent write, ports S2/S3 */
+	writel(0xC, &slcr_base->ddr_urgent);
+
+	zynq_slcr_lock();
+}
 
 void reset_cpu(ulong addr)
 {
+	zynq_slcr_cpu_reset();
 	while (1)
 		;
 }
diff --git a/arch/arm/cpu/armv7/zynq/slcr.c b/arch/arm/cpu/armv7/zynq/slcr.c
new file mode 100644
index 0000000..788a8fd
--- /dev/null
+++ b/arch/arm/cpu/armv7/zynq/slcr.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2013 Xilinx Inc.
+ *
+ * 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 <malloc.h>
+#include <asm/arch/hardware.h>
+
+#define SLCR_LOCK_MAGIC		0x767B
+#define SLCR_UNLOCK_MAGIC	0xDF0D
+
+static int slcr_lock = 1; /* 1 means locked, 0 means unlocked */
+
+void zynq_slcr_lock(void)
+{
+	if (!slcr_lock)
+		writel(SLCR_LOCK_MAGIC, &slcr_base->slcr_lock);
+}
+
+void zynq_slcr_unlock(void)
+{
+	if (slcr_lock)
+		writel(SLCR_UNLOCK_MAGIC, &slcr_base->slcr_unlock);
+}
+
+/* Reset the entire system */
+void zynq_slcr_cpu_reset(void)
+{
+	/*
+	 * Unlock the SLCR then reset the system.
+	 * Note that this seems to require raw i/o
+	 * functions or there's a lockup?
+	 */
+	zynq_slcr_unlock();
+
+	/*
+	 * Clear 0x0F000000 bits of reboot status register to workaround
+	 * the FSBL not loading the bitstream after soft-reboot
+	 * This is a temporary solution until we know more.
+	 */
+	clrbits_le32(&slcr_base->reboot_status, 0xF000000);
+
+	writel(1, &slcr_base->pss_rst_ctrl);
+}