86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/*
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* Copyright (C) 2013 Altera Corporation <www.altera.com>
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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/system_manager.h>
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#include <asm/arch/fpga_manager.h>
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DECLARE_GLOBAL_DATA_PTR;
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static struct socfpga_system_manager *sysmgr_regs =
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(struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
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/*
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* Populate the value for SYSMGR.FPGAINTF.MODULE based on pinmux setting.
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* The value is not wrote to SYSMGR.FPGAINTF.MODULE but
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* CONFIG_SYSMGR_ISWGRP_HANDOFF.
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*/
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static void populate_sysmgr_fpgaintf_module(void)
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{
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uint32_t handoff_val = 0;
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/* ISWGRP_HANDOFF_FPGAINTF */
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writel(0, &sysmgr_regs->iswgrp_handoff[2]);
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/* Enable the signal for those HPS peripherals that use FPGA. */
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if (readl(&sysmgr_regs->nandusefpga) == SYSMGR_FPGAINTF_USEFPGA)
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handoff_val |= SYSMGR_FPGAINTF_NAND;
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if (readl(&sysmgr_regs->rgmii1usefpga) == SYSMGR_FPGAINTF_USEFPGA)
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handoff_val |= SYSMGR_FPGAINTF_EMAC1;
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if (readl(&sysmgr_regs->sdmmcusefpga) == SYSMGR_FPGAINTF_USEFPGA)
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handoff_val |= SYSMGR_FPGAINTF_SDMMC;
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if (readl(&sysmgr_regs->rgmii0usefpga) == SYSMGR_FPGAINTF_USEFPGA)
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handoff_val |= SYSMGR_FPGAINTF_EMAC0;
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if (readl(&sysmgr_regs->spim0usefpga) == SYSMGR_FPGAINTF_USEFPGA)
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handoff_val |= SYSMGR_FPGAINTF_SPIM0;
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if (readl(&sysmgr_regs->spim1usefpga) == SYSMGR_FPGAINTF_USEFPGA)
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handoff_val |= SYSMGR_FPGAINTF_SPIM1;
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/* populate (not writing) the value for SYSMGR.FPGAINTF.MODULE
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based on pinmux setting */
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setbits_le32(&sysmgr_regs->iswgrp_handoff[2], handoff_val);
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handoff_val = readl(&sysmgr_regs->iswgrp_handoff[2]);
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if (fpgamgr_test_fpga_ready()) {
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/* Enable the required signals only */
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writel(handoff_val, &sysmgr_regs->fpgaintfgrp_module);
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}
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}
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/*
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* Configure all the pin muxes
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*/
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void sysmgr_pinmux_init(void)
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{
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uint32_t regs = (uint32_t)&sysmgr_regs->emacio[0];
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const u8 *sys_mgr_init_table;
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unsigned int len;
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int i;
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sysmgr_get_pinmux_table(&sys_mgr_init_table, &len);
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for (i = 0; i < len; i++) {
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writel(sys_mgr_init_table[i], regs);
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regs += sizeof(regs);
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}
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populate_sysmgr_fpgaintf_module();
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}
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/*
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* This bit allows the bootrom to configure the IOs after a warm reset.
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*/
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void sysmgr_config_warmrstcfgio(int enable)
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{
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if (enable)
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setbits_le32(&sysmgr_regs->romcodegrp_ctrl,
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SYSMGR_ROMCODEGRP_CTRL_WARMRSTCFGIO);
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else
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clrbits_le32(&sysmgr_regs->romcodegrp_ctrl,
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SYSMGR_ROMCODEGRP_CTRL_WARMRSTCFGIO);
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}
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