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-rw-r--r--arch/arm/mach-socfpga/socfpga.c118
1 files changed, 118 insertions, 0 deletions
diff --git a/arch/arm/mach-socfpga/socfpga.c b/arch/arm/mach-socfpga/socfpga.c
new file mode 100644
index 0000000000..4332af2d8b
--- /dev/null
+++ b/arch/arm/mach-socfpga/socfpga.c
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2012-2015 Altera Corporation
+ */
+#include <linux/irqchip.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/reboot.h>
+#include <linux/reset/socfpga.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/cacheflush.h>
+
+#include "core.h"
+
+void __iomem *sys_manager_base_addr;
+void __iomem *rst_manager_base_addr;
+void __iomem *sdr_ctl_base_addr;
+unsigned long socfpga_cpu1start_addr;
+
+static void __init socfpga_sysmgr_init(void)
+{
+ struct device_node *np;
+
+ np = of_find_compatible_node(NULL, NULL, "altr,sys-mgr");
+
+ if (of_property_read_u32(np, "cpu1-start-addr",
+ (u32 *) &socfpga_cpu1start_addr))
+ pr_err("SMP: Need cpu1-start-addr in device tree.\n");
+
+ /* Ensure that socfpga_cpu1start_addr is visible to other CPUs */
+ smp_wmb();
+ sync_cache_w(&socfpga_cpu1start_addr);
+
+ sys_manager_base_addr = of_iomap(np, 0);
+
+ np = of_find_compatible_node(NULL, NULL, "altr,rst-mgr");
+ rst_manager_base_addr = of_iomap(np, 0);
+
+ np = of_find_compatible_node(NULL, NULL, "altr,sdr-ctl");
+ sdr_ctl_base_addr = of_iomap(np, 0);
+}
+
+static void __init socfpga_init_irq(void)
+{
+ irqchip_init();
+ socfpga_sysmgr_init();
+ if (IS_ENABLED(CONFIG_EDAC_ALTERA_L2C))
+ socfpga_init_l2_ecc();
+
+ if (IS_ENABLED(CONFIG_EDAC_ALTERA_OCRAM))
+ socfpga_init_ocram_ecc();
+ socfpga_reset_init();
+}
+
+static void __init socfpga_arria10_init_irq(void)
+{
+ irqchip_init();
+ socfpga_sysmgr_init();
+ if (IS_ENABLED(CONFIG_EDAC_ALTERA_L2C))
+ socfpga_init_arria10_l2_ecc();
+ if (IS_ENABLED(CONFIG_EDAC_ALTERA_OCRAM))
+ socfpga_init_arria10_ocram_ecc();
+ socfpga_reset_init();
+}
+
+static void socfpga_cyclone5_restart(enum reboot_mode mode, const char *cmd)
+{
+ u32 temp;
+
+ temp = readl(rst_manager_base_addr + SOCFPGA_RSTMGR_CTRL);
+
+ if (mode == REBOOT_WARM)
+ temp |= RSTMGR_CTRL_SWWARMRSTREQ;
+ else
+ temp |= RSTMGR_CTRL_SWCOLDRSTREQ;
+ writel(temp, rst_manager_base_addr + SOCFPGA_RSTMGR_CTRL);
+}
+
+static void socfpga_arria10_restart(enum reboot_mode mode, const char *cmd)
+{
+ u32 temp;
+
+ temp = readl(rst_manager_base_addr + SOCFPGA_A10_RSTMGR_CTRL);
+
+ if (mode == REBOOT_WARM)
+ temp |= RSTMGR_CTRL_SWWARMRSTREQ;
+ else
+ temp |= RSTMGR_CTRL_SWCOLDRSTREQ;
+ writel(temp, rst_manager_base_addr + SOCFPGA_A10_RSTMGR_CTRL);
+}
+
+static const char *altera_dt_match[] = {
+ "altr,socfpga",
+ NULL
+};
+
+DT_MACHINE_START(SOCFPGA, "Altera SOCFPGA")
+ .l2c_aux_val = 0,
+ .l2c_aux_mask = ~0,
+ .init_irq = socfpga_init_irq,
+ .restart = socfpga_cyclone5_restart,
+ .dt_compat = altera_dt_match,
+MACHINE_END
+
+static const char *altera_a10_dt_match[] = {
+ "altr,socfpga-arria10",
+ NULL
+};
+
+DT_MACHINE_START(SOCFPGA_A10, "Altera SOCFPGA Arria10")
+ .l2c_aux_val = 0,
+ .l2c_aux_mask = ~0,
+ .init_irq = socfpga_arria10_init_irq,
+ .restart = socfpga_arria10_restart,
+ .dt_compat = altera_a10_dt_match,
+MACHINE_END