tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
rpmb: move rpmb_frame struct and constants to common header
Move struct rpmb_frame and RPMB operation constants from MMC block
driver to include/linux/rpmb.h for reuse across different RPMB
implementations (UFS, NVMe, etc.).
Signed-off-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Avri Altman <avri.altman@sandisk.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
authored by
Bean Huo
and committed by
Ulf Hansson
7e824240
3a866087
+44
-42
-42
drivers/mmc/core/block.c
-42
drivers/mmc/core/block.c
···
79
79
#define MMC_EXTRACT_INDEX_FROM_ARG(x) ((x & 0x00FF0000) >> 16)
80
80
#define MMC_EXTRACT_VALUE_FROM_ARG(x) ((x & 0x0000FF00) >> 8)
81
81
82
-
/**
83
-
* struct rpmb_frame - rpmb frame as defined by eMMC 5.1 (JESD84-B51)
84
-
*
85
-
* @stuff : stuff bytes
86
-
* @key_mac : The authentication key or the message authentication
87
-
* code (MAC) depending on the request/response type.
88
-
* The MAC will be delivered in the last (or the only)
89
-
* block of data.
90
-
* @data : Data to be written or read by signed access.
91
-
* @nonce : Random number generated by the host for the requests
92
-
* and copied to the response by the RPMB engine.
93
-
* @write_counter: Counter value for the total amount of the successful
94
-
* authenticated data write requests made by the host.
95
-
* @addr : Address of the data to be programmed to or read
96
-
* from the RPMB. Address is the serial number of
97
-
* the accessed block (half sector 256B).
98
-
* @block_count : Number of blocks (half sectors, 256B) requested to be
99
-
* read/programmed.
100
-
* @result : Includes information about the status of the write counter
101
-
* (valid, expired) and result of the access made to the RPMB.
102
-
* @req_resp : Defines the type of request and response to/from the memory.
103
-
*
104
-
* The stuff bytes and big-endian properties are modeled to fit to the spec.
105
-
*/
106
-
struct rpmb_frame {
107
-
u8 stuff[196];
108
-
u8 key_mac[32];
109
-
u8 data[256];
110
-
u8 nonce[16];
111
-
__be32 write_counter;
112
-
__be16 addr;
113
-
__be16 block_count;
114
-
__be16 result;
115
-
__be16 req_resp;
116
-
} __packed;
117
-
118
-
#define RPMB_PROGRAM_KEY 0x1 /* Program RPMB Authentication Key */
119
-
#define RPMB_GET_WRITE_COUNTER 0x2 /* Read RPMB write counter */
120
-
#define RPMB_WRITE_DATA 0x3 /* Write data to RPMB partition */
121
-
#define RPMB_READ_DATA 0x4 /* Read data from RPMB partition */
122
-
#define RPMB_RESULT_READ 0x5 /* Read result request (Internal) */
123
-
124
82
#define RPMB_FRAME_SIZE sizeof(struct rpmb_frame)
125
83
#define CHECK_SIZE_NEQ(val) ((val) != sizeof(struct rpmb_frame))
126
84
#define CHECK_SIZE_ALIGNED(val) IS_ALIGNED((val), sizeof(struct rpmb_frame))
+44
include/linux/rpmb.h
+44
include/linux/rpmb.h
···
61
61
62
62
#define to_rpmb_dev(x) container_of((x), struct rpmb_dev, dev)
63
63
64
+
/**
65
+
* struct rpmb_frame - RPMB frame structure for authenticated access
66
+
*
67
+
* @stuff : stuff bytes, a padding/reserved area of 196 bytes at the
68
+
* beginning of the RPMB frame. They don’t carry meaningful
69
+
* data but are required to make the frame exactly 512 bytes.
70
+
* @key_mac : The authentication key or the message authentication
71
+
* code (MAC) depending on the request/response type.
72
+
* The MAC will be delivered in the last (or the only)
73
+
* block of data.
74
+
* @data : Data to be written or read by signed access.
75
+
* @nonce : Random number generated by the host for the requests
76
+
* and copied to the response by the RPMB engine.
77
+
* @write_counter: Counter value for the total amount of the successful
78
+
* authenticated data write requests made by the host.
79
+
* @addr : Address of the data to be programmed to or read
80
+
* from the RPMB. Address is the serial number of
81
+
* the accessed block (half sector 256B).
82
+
* @block_count : Number of blocks (half sectors, 256B) requested to be
83
+
* read/programmed.
84
+
* @result : Includes information about the status of the write counter
85
+
* (valid, expired) and result of the access made to the RPMB.
86
+
* @req_resp : Defines the type of request and response to/from the memory.
87
+
*
88
+
* The stuff bytes and big-endian properties are modeled to fit to the spec.
89
+
*/
90
+
struct rpmb_frame {
91
+
u8 stuff[196];
92
+
u8 key_mac[32];
93
+
u8 data[256];
94
+
u8 nonce[16];
95
+
__be32 write_counter;
96
+
__be16 addr;
97
+
__be16 block_count;
98
+
__be16 result;
99
+
__be16 req_resp;
100
+
};
101
+
102
+
#define RPMB_PROGRAM_KEY 0x1 /* Program RPMB Authentication Key */
103
+
#define RPMB_GET_WRITE_COUNTER 0x2 /* Read RPMB write counter */
104
+
#define RPMB_WRITE_DATA 0x3 /* Write data to RPMB partition */
105
+
#define RPMB_READ_DATA 0x4 /* Read data from RPMB partition */
106
+
#define RPMB_RESULT_READ 0x5 /* Read result request (Internal) */
107
+
64
108
#if IS_ENABLED(CONFIG_RPMB)
65
109
struct rpmb_dev *rpmb_dev_get(struct rpmb_dev *rdev);
66
110
void rpmb_dev_put(struct rpmb_dev *rdev);