diff -drupN a/drivers/char/sunxi-sysinfo/sunxi-sysinfo.c b/drivers/char/sunxi-sysinfo/sunxi-sysinfo.c
--- a/drivers/char/sunxi-sysinfo/sunxi-sysinfo.c 1970-01-01 03:00:00.000000000 +0300
+++ b/drivers/char/sunxi-sysinfo/sunxi-sysinfo.c 2022-06-12 05:28:14.000000000 +0300
@@ -0,0 +1,245 @@
+/*
+ * Based on drivers/char/sunxi-sysinfo/sunxi-sysinfo.c
+ *
+ * Copyright (C) 2015 Allwinnertech Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include "sunxi-sysinfo-user.h"
+
+static s8 key_name[SUNXI_KEY_NAME_LEN];
+
+static int soc_info_open(struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+static int soc_info_release(struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+static long soc_info_ioctl(struct file *file, unsigned int ioctl_num,
+ unsigned long ioctl_param)
+{
+ int ret = 0;
+ char id[17] = "";
+
+ memset(id, 0, sizeof(id));
+
+ pr_debug("IOCTRL cmd: %#x, param: %#lx\n", ioctl_num, ioctl_param);
+ switch (ioctl_num) {
+ case CHECK_SOC_SECURE_ATTR:
+ ret = sunxi_soc_is_secure();
+ if (ret)
+ pr_debug("soc is secure. return value: %d\n", ret);
+ else
+ pr_debug("soc is normal. return value: %d\n", ret);
+ break;
+ case CHECK_SOC_VERSION:
+ ret = sunxi_get_soc_ver();
+ pr_debug("soc version:%x\n", ret);
+ break;
+ case CHECK_SOC_BONDING:
+ sunxi_get_soc_chipid_str(id);
+ ret = copy_to_user((void __user *)ioctl_param, id, 8);
+ pr_debug("soc id:%s\n", id);
+ break;
+ case CHECK_SOC_CHIPID:
+ sunxi_get_soc_chipid_str(id);
+ ret = copy_to_user((void __user *)ioctl_param, id, 16);
+ pr_debug("soc chipid:%s\n", id);
+ break;
+ case CHECK_SOC_FT_ZONE:
+ sunxi_get_soc_ft_zone_str(id);
+ ret = copy_to_user((void __user *)ioctl_param, id, 8);
+ pr_debug("ft zone:%s\n", id);
+ break;
+ case CHECK_SOC_ROTPK_STATUS:
+ sunxi_get_soc_rotpk_status_str(id);
+ ret = copy_to_user((void __user *)ioctl_param, id, 8);
+ pr_debug("rotpk status:%s\n", id);
+ break;
+ default:
+ pr_err("Unsupported cmd:%d\n", ioctl_num);
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+#ifdef CONFIG_COMPAT
+static long soc_info_compat_ioctl(struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ unsigned long translated_arg = (unsigned long)compat_ptr(arg);
+
+ return soc_info_ioctl(filp, cmd, translated_arg);
+}
+#endif
+
+static const struct file_operations soc_info_ops = {
+ .owner = THIS_MODULE,
+ .open = soc_info_open,
+ .release = soc_info_release,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = soc_info_compat_ioctl,
+#endif
+ .unlocked_ioctl = soc_info_ioctl,
+};
+
+struct miscdevice soc_info_device = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "sunxi_soc_info",
+ .fops = &soc_info_ops,
+};
+
+static ssize_t sys_info_show(struct class *class,
+ struct class_attribute *attr, char *buf)
+{
+ int i;
+ int databuf[4] = {0};
+ char tmpbuf[129] = {0};
+ size_t size = 0;
+
+ /* platform */
+ sunxi_get_platform(tmpbuf, 129);
+ size += sprintf(buf + size, "sunxi_platform : %s\n", tmpbuf);
+
+ /* secure */
+ size += sprintf(buf + size, "sunxi_secure : ");
+ if (sunxi_soc_is_secure()) {
+ size += sprintf(buf + size, "%s\n", "secure");
+ /* rotpk status */
+ memset(tmpbuf, 0x0, sizeof(tmpbuf));
+ sunxi_get_soc_rotpk_status_str(tmpbuf);
+ size += sprintf(buf + size, "sunxi_rotpk : %s\n", tmpbuf);
+ } else
+ size += sprintf(buf + size, "%s\n", "normal");
+
+#ifdef CONFIG_SUNXI_QA_TEST
+ /* chipid */
+ sunxi_get_soc_chipid((u8 *)databuf);
+
+ for (i = 0; i < 4; i++)
+ sprintf(tmpbuf + i*8, "%08x", databuf[i]);
+ tmpbuf[128] = 0;
+ size += sprintf(buf + size, "sunxi_chipid : %s\n", tmpbuf);
+#endif
+ /* serial */
+ sunxi_get_serial((u8 *)databuf);
+ for (i = 0; i < 4; i++)
+ sprintf(tmpbuf + i*8, "%08x", databuf[i]);
+ tmpbuf[128] = 0;
+ size += sprintf(buf + size, "sunxi_serial : %s\n", tmpbuf);
+
+ /* chiptype */
+ sunxi_get_soc_chipid_str(tmpbuf);
+ size += sprintf(buf + size, "sunxi_chiptype : %s\n", tmpbuf);
+
+ /* socbatch number */
+ size += sprintf(buf + size, "sunxi_batchno : %#x\n",
+ sunxi_get_soc_ver()&0x0ffff);
+
+ return size;
+}
+
+static ssize_t key_info_show(struct class *class,
+ struct class_attribute *attr, char *buf)
+{
+ s32 i;
+ u32 *key_data = NULL;
+ size_t size = 0;
+
+ key_data = vmalloc(256);
+ if (key_data == NULL)
+ return -ENOMEM;
+
+ memset(key_data, 0, 256*4);
+ sunxi_efuse_readn(key_name, key_data, 256);
+ for (i = 0; i < 256; i++) {
+ if ((i > 0) && (key_data[i] == 0))
+ break;
+ if ((i > 0) && (i % 8 == 0))
+ size += sprintf(buf + size, "\n");
+
+ size += sprintf(buf + size, "%08x ", key_data[i]);
+ }
+ size += sprintf(buf + size, "\n");
+
+ vfree(key_data);
+ return size;
+}
+
+static ssize_t key_info_store(struct class *class, struct class_attribute *attr,
+ const char *buf, size_t count)
+{
+ if (count >= SUNXI_KEY_NAME_LEN)
+ return -EINVAL;
+
+ memset(key_name, 0, SUNXI_KEY_NAME_LEN);
+ strncpy(key_name, buf, count);
+ return count;
+}
+
+static struct class_attribute info_class_attrs[] = {
+ __ATTR(sys_info, 0644, sys_info_show, NULL),
+ __ATTR(key_info, 0644, key_info_show, key_info_store),
+ __ATTR_NULL,
+};
+
+static struct class info_class = {
+ .name = "sunxi_info",
+ .owner = THIS_MODULE,
+ .class_attrs = info_class_attrs,
+};
+
+static int __init sunxi_sys_info_init(void)
+{
+ s32 ret = 0;
+
+ ret = class_register(&info_class);
+ if (ret != 0)
+ return ret;
+
+ ret = misc_register(&soc_info_device);
+ if (ret != 0) {
+ pr_err("%s: misc_register() failed!(%d)\n", __func__, ret);
+ class_unregister(&info_class);
+ return ret;
+ }
+ return ret;
+}
+
+static void __exit sunxi_sys_info_exit(void)
+{
+ misc_deregister(&soc_info_device);
+ class_unregister(&info_class);
+}
+
+module_init(sunxi_sys_info_init);
+module_exit(sunxi_sys_info_exit);
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("xiafeng");
+MODULE_DESCRIPTION("sunxi sys info.");