shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 19:30:30 +09:00
Code Issues Packages Projects Releases Wiki Activity

drivers: soc: rockchip: disable loader update vi vendor storage

Browse Source 
The note /dev/vendor_storage include api to update loader,
this node must config root user access only, but some
project set this node`s owner as bluetooth ,it is a high
risk that the loader data will be corrupted.

Disable this api by default.

Change-Id: I6beb1b3cf51bffebd0ae05368d8c266439a61f91
Signed-off-by: Yifeng Zhao <zyf@rock-chips.com>
This commit is contained in:
Yifeng Zhao
2019-04-26 10:38:46 +08:00
committed by Tao Huang
parent 910d9e3f54
commit 9821eee3ad
2 changed files with 26 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/soc/rockchip/Kconfig
View File

@@ -84,4 +84,10 @@ config ROCKCHIP_SYSTEM_MONITOR
help
Say y here to enable rockchip system monitor support.
config ROCKCHIP_VENDOR_STORAGE_UPDATE_LOADER
bool "Rockchip vendor storage update loader support"
default n
help
Say y here to enable rockchip vendor storage update loader support.
The /dev/vendor_storage must set root user access only.
endif

37
drivers/soc/rockchip/sdmmc_vendor_storage.c
View File

@@ -32,12 +32,6 @@
#define EMMC_VENDOR_PART_NUM 4
#define EMMC_VENDOR_TAG 0x524B5644
struct rk_sys_req {
u32 tag;
u32 len;
u8 data[512];
};
struct rk_vendor_req {
u32 tag;
u16 id;
@@ -65,12 +59,14 @@ struct vendor_info {
u32 version2;
};
#ifdef CONFIG_ROCKCHIP_VENDOR_STORAGE_UPDATE_LOADER
#define READ_SECTOR_IO _IOW('r', 0x04, unsigned int)
#define WRITE_SECTOR_IO _IOW('r', 0x05, unsigned int)
#define END_WRITE_SECTOR_IO _IOW('r', 0x52, unsigned int)
#define GET_FLASH_INFO_IO _IOW('r', 0x1A, unsigned int)
#define GET_BAD_BLOCK_IO _IOW('r', 0x03, unsigned int)
#define GET_LOCK_FLAG_IO _IOW('r', 0x53, unsigned int)
#endif
#define VENDOR_REQ_TAG 0x56524551
#define VENDOR_READ_IO _IOW('v', 0x01, unsigned int)
@@ -78,13 +74,13 @@ struct vendor_info {
static u8 *g_idb_buffer;
static struct vendor_info *g_vendor;
static DEFINE_MUTEX(vendor_ops_mutex);
extern int rk_emmc_transfer(u8 *buffer, unsigned addr, unsigned blksz,
int write);
static int emmc_vendor_ops(u8 *buffer, u32 addr, u32 n_sec, int write)
{
u32 i, ret;
u32 i, ret = 0;
for (i = 0; i < n_sec; i++)
ret = rk_emmc_transfer(buffer + i * 512, addr + i, 512, write);
@@ -173,7 +169,7 @@ static int emmc_vendor_write(u32 id, void *pbuf, u32 size)
struct vendor_item *next_item;
if (!g_vendor)
return -1;
return -ENOMEM;
p_data = g_vendor->data;
item_num = g_vendor->item_num;
@@ -248,6 +244,7 @@ static int emmc_vendor_write(u32 id, void *pbuf, u32 size)
return(-1);
}
#ifdef CONFIG_ROCKCHIP_VENDOR_STORAGE_UPDATE_LOADER
static int id_blk_read_data(u32 index, u32 n_sec, u8 *buf)
{
u32 i;
@@ -319,6 +316,7 @@ static int emmc_write_idblock(u32 size, u8 *buf, u32 *id_blk_tbl)
return 0;
return (-1);
}
#endif
static int vendor_storage_open(struct inode *inode, struct file *file)
{
@@ -330,6 +328,7 @@ static int vendor_storage_release(struct inode *inode, struct file *file)
return 0;
}
#ifdef CONFIG_ROCKCHIP_VENDOR_STORAGE_UPDATE_LOADER
static const u32 g_crc32_tbl[256] = {
0x00000000, 0x04c10db7, 0x09821b6e, 0x0d4316d9,
0x130436dc, 0x17c53b6b, 0x1a862db2, 0x1e472005,
@@ -406,22 +405,23 @@ static u32 rk_crc_32(unsigned char *buf, u32 len)
crc = (crc << 8) ^ g_crc32_tbl[(crc >> 24) ^ *buf++];
return crc;
}
#endif
static long vendor_storage_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
long ret = -1;
u32 size;
struct rk_sys_req *s_req;
int size;
struct rk_vendor_req *v_req;
u32 *page_buf;
page_buf = kmalloc(4096, GFP_KERNEL);
if (!page_buf)
return ret;
return -ENOMEM;
mutex_lock(&vendor_ops_mutex);
v_req = (struct rk_vendor_req *)page_buf;
s_req = (struct rk_sys_req *)page_buf;
switch (cmd) {
case VENDOR_READ_IO:
@@ -461,6 +461,7 @@ static long vendor_storage_ioctl(struct file *file, unsigned int cmd,
}
} break;
#ifdef CONFIG_ROCKCHIP_VENDOR_STORAGE_UPDATE_LOADER
case READ_SECTOR_IO:
{
if (copy_from_user(page_buf, (void __user *)arg, 512)) {
@@ -477,7 +478,8 @@ static long vendor_storage_ioctl(struct file *file, unsigned int cmd,
goto exit;
}
} else {
return -EFAULT;
ret = -EFAULT;
goto exit;
}
ret = 0;
} break;
@@ -566,13 +568,14 @@ static long vendor_storage_ioctl(struct file *file, unsigned int cmd,
}
ret = 0;
} break;
#endif
default:
ret = -EFAULT;
ret = -EINVAL;
goto exit;
}
exit:
pr_info("ret = %lx\n", ret);
mutex_unlock(&vendor_ops_mutex);
kfree(page_buf);
return ret;
}
@@ -607,7 +610,7 @@ static int vendor_init_thread(void *arg)
ret = misc_register(&vender_storage_dev);
rk_vendor_register(emmc_vendor_read, emmc_vendor_write);
}
pr_info("vendor storage:20160801 ret = %d\n", ret);
pr_info("vendor storage:20190527 ret = %d\n", ret);
return ret;
}