[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/m68k/emu/natfeat.c b/src/kernel/linux/v4.14/arch/m68k/emu/natfeat.c
new file mode 100644
index 0000000..71b78ec
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/m68k/emu/natfeat.c
@@ -0,0 +1,94 @@
+/*
+ * natfeat.c - ARAnyM hardware support via Native Features (natfeats)
+ *
+ * Copyright (c) 2005 Petr Stehlik of ARAnyM dev team
+ *
+ * Reworked for Linux by Roman Zippel <zippel@linux-m68k.org>
+ *
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License (GPL), incorporated herein by reference.
+ */
+
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/console.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <asm/machdep.h>
+#include <asm/natfeat.h>
+
+extern long nf_get_id_phys(unsigned long feature_name);
+
+asm("\n"
+" .global nf_get_id_phys,nf_call\n"
+"nf_get_id_phys:\n"
+" .short 0x7300\n"
+" rts\n"
+"nf_call:\n"
+" .short 0x7301\n"
+" rts\n"
+"1: moveq.l #0,%d0\n"
+" rts\n"
+" .section __ex_table,\"a\"\n"
+" .long nf_get_id_phys,1b\n"
+" .long nf_call,1b\n"
+" .previous");
+EXPORT_SYMBOL_GPL(nf_call);
+
+long nf_get_id(const char *feature_name)
+{
+ /* feature_name may be in vmalloc()ed memory, so make a copy */
+ char name_copy[32];
+ size_t n;
+
+ n = strlcpy(name_copy, feature_name, sizeof(name_copy));
+ if (n >= sizeof(name_copy))
+ return 0;
+
+ return nf_get_id_phys(virt_to_phys(name_copy));
+}
+EXPORT_SYMBOL_GPL(nf_get_id);
+
+void nfprint(const char *fmt, ...)
+{
+ static char buf[256];
+ va_list ap;
+ int n;
+
+ va_start(ap, fmt);
+ n = vsnprintf(buf, 256, fmt, ap);
+ nf_call(nf_get_id("NF_STDERR"), virt_to_phys(buf));
+ va_end(ap);
+}
+
+static void nf_poweroff(void)
+{
+ long id = nf_get_id("NF_SHUTDOWN");
+
+ if (id)
+ nf_call(id);
+}
+
+void __init nf_init(void)
+{
+ unsigned long id, version;
+ char buf[256];
+
+ id = nf_get_id("NF_VERSION");
+ if (!id)
+ return;
+ version = nf_call(id);
+
+ id = nf_get_id("NF_NAME");
+ if (!id)
+ return;
+ nf_call(id, virt_to_phys(buf), 256);
+ buf[255] = 0;
+
+ pr_info("NatFeats found (%s, %lu.%lu)\n", buf, version >> 16,
+ version & 0xffff);
+
+ mach_power_off = nf_poweroff;
+}