1 // SPDX-License-Identifier: GPL-2.0+
4 * Copyright (C) 2012 Xilinx, Inc. All rights reserved.
8 #include <asm/arch/clk.h>
9 #include <asm/arch/sys_proto.h>
10 #include <asm/arch/hardware.h>
12 #define ZYNQ_SILICON_VER_MASK 0xF0000000
13 #define ZYNQ_SILICON_VER_SHIFT 28
15 int arch_cpu_init(void)
18 #ifndef CONFIG_SPL_BUILD
19 /* Device config APB, unlock the PCAP */
20 writel(0x757BDF0D, &devcfg_base->unlock);
21 writel(0xFFFFFFFF, &devcfg_base->rom_shadow);
23 #if (CONFIG_SYS_SDRAM_BASE == 0)
24 /* remap DDR to zero, FILTERSTART */
25 writel(0, &scu_base->filter_start);
27 /* OCM_CFG, Mask out the ROM, map ram into upper addresses */
28 writel(0x1F, &slcr_base->ocm_cfg);
29 /* FPGA_RST_CTRL, clear resets on AXI fabric ports */
30 writel(0x0, &slcr_base->fpga_rst_ctrl);
31 /* Set urgent bits with register */
32 writel(0x0, &slcr_base->ddr_urgent_sel);
33 /* Urgent write, ports S2/S3 */
34 writel(0xC, &slcr_base->ddr_urgent);
42 unsigned int zynq_get_silicon_version(void)
44 return (readl(&devcfg_base->mctrl) & ZYNQ_SILICON_VER_MASK)
45 >> ZYNQ_SILICON_VER_SHIFT;
48 void reset_cpu(ulong addr)
50 zynq_slcr_cpu_reset();
55 #ifndef CONFIG_SYS_DCACHE_OFF
56 void enable_caches(void)
58 /* Enable D-cache. I-cache is already enabled in start.S */