123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263 |
- /*
- * 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);
- }
|