Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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