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Diffstat (limited to 'arch/arm/mach-socfpga/system_manager.c')
-rw-r--r--arch/arm/mach-socfpga/system_manager.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/arch/arm/mach-socfpga/system_manager.c b/arch/arm/mach-socfpga/system_manager.c
new file mode 100644
index 0000000..8126e0d
--- /dev/null
+++ b/arch/arm/mach-socfpga/system_manager.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2013 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)
+{
+ uint32_t 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)
+{
+ uint32_t regs = (uint32_t)&sysmgr_regs->emacio[0];
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(sys_mgr_init_table); 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_enable_warmrstcfgio(void)
+{
+ setbits_le32(&sysmgr_regs->romcodegrp_ctrl,
+ SYSMGR_ROMCODEGRP_CTRL_WARMRSTCFGIO);
+}