[U-Boot] [PATCH 06/14] arm: socfpga: stratix10: Add misc support for Stratix10 SoC

[chin.liang.see at intel.com]

From: Chin Liang See <chin.liang.see at intel.com>

Add misc support for Stratix SoC

Signed-off-by: Chin Liang See <chin.liang.see at intel.com>
---
 arch/arm/mach-socfpga/Makefile   |   1 +
 arch/arm/mach-socfpga/misc.c     |   4 +
 arch/arm/mach-socfpga/misc_s10.c | 165 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 170 insertions(+)
 create mode 100644 arch/arm/mach-socfpga/misc_s10.c

diff --git a/arch/arm/mach-socfpga/Makefile b/arch/arm/mach-socfpga/Makefile
index 910eb6f..b253914 100644
--- a/arch/arm/mach-socfpga/Makefile
+++ b/arch/arm/mach-socfpga/Makefile
@@ -32,6 +32,7 @@ endif
 
 ifdef CONFIG_TARGET_SOCFPGA_STRATIX10
 obj-y	+= clock_manager_s10.o
+obj-y	+= misc_s10.o
 obj-y	+= reset_manager_s10.o
 obj-y	+= system_manager_s10.o
 obj-y	+= wrap_pinmux_config_s10.o
diff --git a/arch/arm/mach-socfpga/misc.c b/arch/arm/mach-socfpga/misc.c
index 00eff90..2ea94bc 100644
--- a/arch/arm/mach-socfpga/misc.c
+++ b/arch/arm/mach-socfpga/misc.c
@@ -23,8 +23,10 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#ifdef CONFIG_SYS_L2_PL310
 static const struct pl310_regs *const pl310 =
 	(struct pl310_regs *)CONFIG_SYS_PL310_BASE;
+#endif
 
 struct bsel bsel_str[] = {
 	{ "rsvd", "Reserved", },
@@ -53,6 +55,7 @@ void enable_caches(void)
 #endif
 }
 
+#ifdef CONFIG_SYS_L2_PL310
 void v7_outer_cache_enable(void)
 {
 	/* Disable the L2 cache */
@@ -73,6 +76,7 @@ void v7_outer_cache_disable(void)
 	/* Disable the L2 cache */
 	clrbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN);
 }
+#endif
 
 #if defined(CONFIG_SYS_CONSOLE_IS_IN_ENV) && \
 defined(CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE)
diff --git a/arch/arm/mach-socfpga/misc_s10.c b/arch/arm/mach-socfpga/misc_s10.c
new file mode 100644
index 0000000..b84f055
--- /dev/null
+++ b/arch/arm/mach-socfpga/misc_s10.c
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2016-2017 Intel Corporation <www.intel.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <errno.h>
+#include <fdtdec.h>
+#include <libfdt.h>
+#include <altera.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <watchdog.h>
+#include <asm/arch/reset_manager.h>
+#include <asm/arch/system_manager.h>
+#include <asm/pl310.h>
+
+#include <dt-bindings/reset/altr,rst-mgr-s10.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static struct socfpga_system_manager *sysmgr_regs =
+	(struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
+
+/*
+ * DesignWare Ethernet initialization
+ */
+#ifdef CONFIG_ETH_DESIGNWARE
+void dwmac_deassert_reset(const unsigned int of_reset_id,
+				 const u32 phymode)
+{
+	/* Put the emac we're using into reset.
+	 * This is required before configuring the PHY interface
+	 */
+	socfpga_emac_manage_reset(of_reset_id, 1);
+
+	clrsetbits_le32(&sysmgr_regs->emac0 + (of_reset_id - EMAC0_RESET),
+			SYSMGR_EMACGRP_CTRL_PHYSEL_MASK,
+			phymode);
+
+	socfpga_emac_manage_reset(of_reset_id, 0);
+}
+
+static u32 dwmac_phymode_to_modereg(const char *phymode, u32 *modereg)
+{
+	if (!phymode)
+		return -EINVAL;
+
+	if (!strcmp(phymode, "mii") || !strcmp(phymode, "gmii")) {
+		*modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII;
+		return 0;
+	}
+
+	if (!strcmp(phymode, "rgmii")) {
+		*modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII;
+		return 0;
+	}
+
+	if (!strcmp(phymode, "rmii")) {
+		*modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RMII;
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int socfpga_eth_reset(void)
+{
+	const void *fdt = gd->fdt_blob;
+	struct fdtdec_phandle_args args;
+	const char *phy_mode;
+	u32 phy_modereg;
+	int nodes[2];	/* Max. 3 GMACs */
+	int ret, count;
+	int i, node;
+
+	count = fdtdec_find_aliases_for_id(fdt, "ethernet",
+					   COMPAT_ALTERA_SOCFPGA_DWMAC,
+					   nodes, ARRAY_SIZE(nodes));
+	for (i = 0; i < count; i++) {
+		node = nodes[i];
+		if (node <= 0)
+			continue;
+
+		ret = fdtdec_parse_phandle_with_args(fdt, node, "resets",
+						     "#reset-cells", 1, 0,
+						     &args);
+		if (ret || (args.args_count != 1)) {
+			debug("GMAC%i: Failed to parse DT 'resets'!\n", i);
+			continue;
+		}
+
+		phy_mode = fdt_getprop(fdt, node, "phy-mode", NULL);
+		ret = dwmac_phymode_to_modereg(phy_mode, &phy_modereg);
+		if (ret) {
+			debug("GMAC%i: Failed to parse DT 'phy-mode'!\n", i);
+			continue;
+		}
+
+		dwmac_deassert_reset(args.args[0], phy_modereg);
+	}
+
+	return 0;
+}
+#else
+static int socfpga_eth_reset(void)
+{
+	return 0;
+};
+#endif
+
+/*
+ * Print CPU information
+ */
+#if defined(CONFIG_DISPLAY_CPUINFO)
+int print_cpuinfo(void)
+{
+	puts("CPU:   Intel FPGA SoCFPGA Platform\n");
+	puts("FPGA:  Intel FPGA Stratix 10\n");
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_ARCH_MISC_INIT
+int arch_misc_init(void)
+{
+	return socfpga_eth_reset();
+}
+#endif
+
+int arch_early_init_r(void)
+{
+	return 0;
+}
+
+int do_bridge(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	if (argc != 2)
+		return CMD_RET_USAGE;
+
+	argv++;
+
+	switch (*argv[0]) {
+	case 'e':	/* Enable */
+		socfpga_bridges_reset(1);
+		break;
+	case 'd':	/* Disable */
+		socfpga_bridges_reset(0);
+		break;
+	default:
+		return CMD_RET_USAGE;
+	}
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	bridge, 2, 1, do_bridge,
+	"SoCFPGA HPS FPGA bridge control",
+	"enable  - Enable HPS-to-FPGA, FPGA-to-HPS, LWHPS-to-FPGA bridges\n"
+	"bridge disable - Enable HPS-to-FPGA, FPGA-to-HPS, LWHPS-to-FPGA bridges\n"
+	""
+);
-- 
2.2.2