Initial commit: OpenHarmony-v4.0-ReleaseOpenHarmony-v4.0-Release

1 files changed, 120 insertions, 0 deletions

diff --git a/arch/mips/generic/board-ingenic.c b/arch/mips/generic/board-ingenic.c
new file mode 100644
index 000000000..0cec0bea1
--- /dev/null
+++ b/arch/mips/generic/board-ingenic.c
@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Support for Ingenic SoCs
+ *
+ * Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
+ * Copyright (C) 2011, Maarten ter Huurne <maarten@treewalker.org>
+ * Copyright (C) 2020 Paul Cercueil <paul@crapouillou.net>
+ */
+
+#include <linux/of_address.h>
+#include <linux/of_fdt.h>
+#include <linux/pm.h>
+#include <linux/sizes.h>
+#include <linux/suspend.h>
+#include <linux/types.h>
+
+#include <asm/bootinfo.h>
+#include <asm/machine.h>
+#include <asm/reboot.h>
+
+static __init char *ingenic_get_system_type(unsigned long machtype)
+{
+        switch (machtype) {
+        case MACH_INGENIC_X2000E:
+                return "X2000E";
+        case MACH_INGENIC_X2000:
+                return "X2000";
+        case MACH_INGENIC_X1830:
+                return "X1830";
+        case MACH_INGENIC_X1000E:
+                return "X1000E";
+        case MACH_INGENIC_X1000:
+                return "X1000";
+        case MACH_INGENIC_JZ4780:
+                return "JZ4780";
+        case MACH_INGENIC_JZ4775:
+                return "JZ4775";
+        case MACH_INGENIC_JZ4770:
+                return "JZ4770";
+        case MACH_INGENIC_JZ4725B:
+                return "JZ4725B";
+        default:
+                return "JZ4740";
+        }
+}
+
+static __init const void *ingenic_fixup_fdt(const void *fdt, const void *match_data)
+{
+        /*
+         * Old devicetree files for the qi,lb60 board did not have a /memory
+         * node. Hardcode the memory info here.
+         */
+        if (!fdt_node_check_compatible(fdt, 0, "qi,lb60") &&
+            fdt_path_offset(fdt, "/memory") < 0)
+                early_init_dt_add_memory_arch(0, SZ_32M);
+
+        mips_machtype = (unsigned long)match_data;
+        system_type = ingenic_get_system_type(mips_machtype);
+
+        return fdt;
+}
+
+static const struct of_device_id ingenic_of_match[] __initconst = {
+        { .compatible = "ingenic,jz4740", .data = (void *)MACH_INGENIC_JZ4740 },
+        { .compatible = "ingenic,jz4725b", .data = (void *)MACH_INGENIC_JZ4725B },
+        { .compatible = "ingenic,jz4770", .data = (void *)MACH_INGENIC_JZ4770 },
+        { .compatible = "ingenic,jz4775", .data = (void *)MACH_INGENIC_JZ4775 },
+        { .compatible = "ingenic,jz4780", .data = (void *)MACH_INGENIC_JZ4780 },
+        { .compatible = "ingenic,x1000", .data = (void *)MACH_INGENIC_X1000 },
+        { .compatible = "ingenic,x1000e", .data = (void *)MACH_INGENIC_X1000E },
+        { .compatible = "ingenic,x1830", .data = (void *)MACH_INGENIC_X1830 },
+        { .compatible = "ingenic,x2000", .data = (void *)MACH_INGENIC_X2000 },
+        { .compatible = "ingenic,x2000e", .data = (void *)MACH_INGENIC_X2000E },
+        {}
+};
+
+MIPS_MACHINE(ingenic) = {
+        .matches = ingenic_of_match,
+        .fixup_fdt = ingenic_fixup_fdt,
+};
+
+static void ingenic_wait_instr(void)
+{
+        __asm__(".set push;\n"
+                ".set mips3;\n"
+                "wait;\n"
+                ".set pop;\n"
+        );
+}
+
+static void ingenic_halt(void)
+{
+        for (;;)
+                ingenic_wait_instr();
+}
+
+static int __maybe_unused ingenic_pm_enter(suspend_state_t state)
+{
+        ingenic_wait_instr();
+
+        return 0;
+}
+
+static const struct platform_suspend_ops ingenic_pm_ops __maybe_unused = {
+        .valid = suspend_valid_only_mem,
+        .enter = ingenic_pm_enter,
+};
+
+static int __init ingenic_pm_init(void)
+{
+        if (boot_cpu_type() == CPU_XBURST) {
+                if (IS_ENABLED(CONFIG_PM_SLEEP))
+                        suspend_set_ops(&ingenic_pm_ops);
+                _machine_halt = ingenic_halt;
+        }
+
+        return 0;
+
+}
+late_initcall(ingenic_pm_init);