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