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

1 files changed, 40 insertions, 0 deletions

diff --git a/arch/mips/ralink/bootrom.c b/arch/mips/ralink/bootrom.c
new file mode 100644
index 000000000..94ca8379b
--- /dev/null
+++ b/arch/mips/ralink/bootrom.c
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *
+ * Copyright (C) 2013 John Crispin <john@phrozen.org>
+ */
+
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+#define BOOTROM_OFFSET  0x10118000
+#define BOOTROM_SIZE    0x8000
+
+static void __iomem *membase = (void __iomem *) KSEG1ADDR(BOOTROM_OFFSET);
+
+static int bootrom_show(struct seq_file *s, void *unused)
+{
+        seq_write(s, membase, BOOTROM_SIZE);
+
+        return 0;
+}
+
+static int bootrom_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, bootrom_show, NULL);
+}
+
+static const struct file_operations bootrom_file_ops = {
+        .open           = bootrom_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
+
+static int __init bootrom_setup(void)
+{
+        debugfs_create_file("bootrom", 0444, NULL, NULL, &bootrom_file_ops);
+        return 0;
+}
+
+postcore_initcall(bootrom_setup);