xref: /openbmc/qemu/include/hw/misc/sifive_u_otp.h (revision 7a5951f6)
1 /*
2  * QEMU SiFive U OTP (One-Time Programmable) Memory interface
3  *
4  * Copyright (c) 2019 Bin Meng <bmeng.cn@gmail.com>
5  *
6  * This program is free software; you can redistribute it and/or modify it
7  * under the terms and conditions of the GNU General Public License,
8  * version 2 or later, as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope it will be useful, but WITHOUT
11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13  * more details.
14  *
15  * You should have received a copy of the GNU General Public License along with
16  * this program.  If not, see <http://www.gnu.org/licenses/>.
17  */
18 
19 #ifndef HW_SIFIVE_U_OTP_H
20 #define HW_SIFIVE_U_OTP_H
21 
22 #include "hw/sysbus.h"
23 
24 #define SIFIVE_U_OTP_PA         0x00
25 #define SIFIVE_U_OTP_PAIO       0x04
26 #define SIFIVE_U_OTP_PAS        0x08
27 #define SIFIVE_U_OTP_PCE        0x0C
28 #define SIFIVE_U_OTP_PCLK       0x10
29 #define SIFIVE_U_OTP_PDIN       0x14
30 #define SIFIVE_U_OTP_PDOUT      0x18
31 #define SIFIVE_U_OTP_PDSTB      0x1C
32 #define SIFIVE_U_OTP_PPROG      0x20
33 #define SIFIVE_U_OTP_PTC        0x24
34 #define SIFIVE_U_OTP_PTM        0x28
35 #define SIFIVE_U_OTP_PTM_REP    0x2C
36 #define SIFIVE_U_OTP_PTR        0x30
37 #define SIFIVE_U_OTP_PTRIM      0x34
38 #define SIFIVE_U_OTP_PWE        0x38
39 
40 #define SIFIVE_U_OTP_PWE_EN     (1 << 0)
41 
42 #define SIFIVE_U_OTP_PCE_EN     (1 << 0)
43 
44 #define SIFIVE_U_OTP_PDSTB_EN   (1 << 0)
45 
46 #define SIFIVE_U_OTP_PTRIM_EN   (1 << 0)
47 
48 #define SIFIVE_U_OTP_PA_MASK        0xfff
49 #define SIFIVE_U_OTP_NUM_FUSES      0x1000
50 #define SIFIVE_U_OTP_FUSE_WORD      4
51 #define SIFIVE_U_OTP_SERIAL_ADDR    0xfc
52 
53 #define SIFIVE_U_OTP_REG_SIZE       0x1000
54 
55 #define TYPE_SIFIVE_U_OTP           "riscv.sifive.u.otp"
56 
57 typedef struct SiFiveUOTPState SiFiveUOTPState;
58 DECLARE_INSTANCE_CHECKER(SiFiveUOTPState, SIFIVE_U_OTP,
59                          TYPE_SIFIVE_U_OTP)
60 
61 struct SiFiveUOTPState {
62     /*< private >*/
63     SysBusDevice parent_obj;
64 
65     /*< public >*/
66     MemoryRegion mmio;
67     uint32_t pa;
68     uint32_t paio;
69     uint32_t pas;
70     uint32_t pce;
71     uint32_t pclk;
72     uint32_t pdin;
73     uint32_t pdstb;
74     uint32_t pprog;
75     uint32_t ptc;
76     uint32_t ptm;
77     uint32_t ptm_rep;
78     uint32_t ptr;
79     uint32_t ptrim;
80     uint32_t pwe;
81     uint32_t fuse[SIFIVE_U_OTP_NUM_FUSES];
82     uint32_t fuse_wo[SIFIVE_U_OTP_NUM_FUSES];
83     /* config */
84     uint32_t serial;
85     BlockBackend *blk;
86 };
87 
88 #endif /* HW_SIFIVE_U_OTP_H */
89