text: /*
   * Copyright (C) 2013-2017 Altera Corporation <www.altera.com>
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #include <common.h>
  #include <asm/io.h>
  #include <asm/arch/system_manager.h>
  #include <asm/arch/fpga_manager.h>
  
  DECLARE_GLOBAL_DATA_PTR;
  
  static struct socfpga_system_manager *sysmgr_regs =
  	(struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
  
  /*
   * Populate the value for SYSMGR.FPGAINTF.MODULE based on pinmux setting.
   * The value is not wrote to SYSMGR.FPGAINTF.MODULE but
   * CONFIG_SYSMGR_ISWGRP_HANDOFF.
   */
  static void populate_sysmgr_fpgaintf_module(void)
  {
  	u32 handoff_val = 0;
  
  	/* ISWGRP_HANDOFF_FPGAINTF */
  	writel(0, &sysmgr_regs->iswgrp_handoff[2]);
  
  	/* Enable the signal for those HPS peripherals that use FPGA. */
  	if (readl(&sysmgr_regs->nandusefpga) == SYSMGR_FPGAINTF_USEFPGA)
  		handoff_val |= SYSMGR_FPGAINTF_NAND;
  	if (readl(&sysmgr_regs->rgmii1usefpga) == SYSMGR_FPGAINTF_USEFPGA)
  		handoff_val |= SYSMGR_FPGAINTF_EMAC1;
  	if (readl(&sysmgr_regs->sdmmcusefpga) == SYSMGR_FPGAINTF_USEFPGA)
  		handoff_val |= SYSMGR_FPGAINTF_SDMMC;
  	if (readl(&sysmgr_regs->rgmii0usefpga) == SYSMGR_FPGAINTF_USEFPGA)
  		handoff_val |= SYSMGR_FPGAINTF_EMAC0;
  	if (readl(&sysmgr_regs->spim0usefpga) == SYSMGR_FPGAINTF_USEFPGA)
  		handoff_val |= SYSMGR_FPGAINTF_SPIM0;
  	if (readl(&sysmgr_regs->spim1usefpga) == SYSMGR_FPGAINTF_USEFPGA)
  		handoff_val |= SYSMGR_FPGAINTF_SPIM1;
  
  	/* populate (not writing) the value for SYSMGR.FPGAINTF.MODULE
  	based on pinmux setting */
  	setbits_le32(&sysmgr_regs->iswgrp_handoff[2], handoff_val);
  
  	handoff_val = readl(&sysmgr_regs->iswgrp_handoff[2]);
  	if (fpgamgr_test_fpga_ready()) {
  		/* Enable the required signals only */
  		writel(handoff_val, &sysmgr_regs->fpgaintfgrp_module);
  	}
  }
  
  /*
   * Configure all the pin muxes
   */
  void sysmgr_pinmux_init(void)
  {
  	u32 regs = (u32)&sysmgr_regs->emacio[0];
  	const u8 *sys_mgr_init_table;
  	unsigned int len;
  	int i;
  
  	sysmgr_get_pinmux_table(&sys_mgr_init_table, &len);
  
  	for (i = 0; i < len; i++) {
  		writel(sys_mgr_init_table[i], regs);
  		regs += sizeof(regs);
  	}
  
  	populate_sysmgr_fpgaintf_module();
  }
  
  /*
   * This bit allows the bootrom to configure the IOs after a warm reset.
   */
  void sysmgr_config_warmrstcfgio(int enable)
  {
  	if (enable)
  		setbits_le32(&sysmgr_regs->romcodegrp_ctrl,
  			     SYSMGR_ROMCODEGRP_CTRL_WARMRSTCFGIO);
  	else
  		clrbits_le32(&sysmgr_regs->romcodegrp_ctrl,
  			     SYSMGR_ROMCODEGRP_CTRL_WARMRSTCFGIO);
  }
  