68 lines
1.5 KiB
C
68 lines
1.5 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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* SPDX-License-Identifier: GPL-2.0+
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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/clk.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/arch/hardware.h>
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#define ZYNQ_SILICON_VER_MASK 0xF0000000
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#define ZYNQ_SILICON_VER_SHIFT 28
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int arch_cpu_init(void)
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{
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zynq_slcr_unlock();
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#ifndef CONFIG_SPL_BUILD
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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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#if (CONFIG_SYS_SDRAM_BASE == 0)
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/* remap DDR to zero, FILTERSTART */
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writel(0, &scu_base->filter_start);
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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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/* 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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#endif
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#endif
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zynq_clk_early_init();
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zynq_slcr_lock();
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return 0;
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}
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unsigned int zynq_get_silicon_version(void)
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{
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unsigned int ver;
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ver = (readl(&devcfg_base->mctrl) &
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ZYNQ_SILICON_VER_MASK) >> ZYNQ_SILICON_VER_SHIFT;
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return ver;
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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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#ifndef CONFIG_SYS_DCACHE_OFF
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void enable_caches(void)
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{
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/* Enable D-cache. I-cache is already enabled in start.S */
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dcache_enable();
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}
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#endif
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