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https://github.com/brain-hackers/u-boot-brain
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00ed345898
Do lowlevel initialization directly in C. Zynq do not require to do it in asm. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
/*
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* Copyright (C) 2012 Michal Simek <monstr@monstr.eu>
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* Copyright (C) 2012 Xilinx, Inc. All rights reserved.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/arch/hardware.h>
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void lowlevel_init(void)
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{
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zynq_slcr_unlock();
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/* remap DDR to zero, FILTERSTART */
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writel(0, &scu_base->filter_start);
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/* Device config APB, unlock the PCAP */
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writel(0x757BDF0D, &devcfg_base->unlock);
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writel(0xFFFFFFFF, &devcfg_base->rom_shadow);
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/* OCM_CFG, Mask out the ROM, map ram into upper addresses */
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writel(0x1F, &slcr_base->ocm_cfg);
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/* FPGA_RST_CTRL, clear resets on AXI fabric ports */
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writel(0x0, &slcr_base->fpga_rst_ctrl);
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/* TZ_DDR_RAM, Set DDR trust zone non-secure */
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writel(0xFFFFFFFF, &slcr_base->trust_zone);
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/* Set urgent bits with register */
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writel(0x0, &slcr_base->ddr_urgent_sel);
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/* Urgent write, ports S2/S3 */
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writel(0xC, &slcr_base->ddr_urgent);
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zynq_slcr_lock();
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}
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void reset_cpu(ulong addr)
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{
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zynq_slcr_cpu_reset();
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while (1)
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;
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}
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