1 // SPDX-License-Identifier: GPL-2.0-or-later OR BSD-3-Clause
2 /*
3 * Copyright (C) 2022, STMicroelectronics - All Rights Reserved
4 */
5
6 #define LOG_CATEGORY LOGC_ARCH
7
8 #include <common.h>
9 #include <log.h>
10 #include <syscon.h>
11 #include <asm/io.h>
12 #include <asm/arch/stm32.h>
13 #include <asm/arch/sys_proto.h>
14
15 /* SYSCFG register */
16 #define SYSCFG_IDC_OFFSET 0x380
17 #define SYSCFG_IDC_DEV_ID_MASK GENMASK(11, 0)
18 #define SYSCFG_IDC_DEV_ID_SHIFT 0
19 #define SYSCFG_IDC_REV_ID_MASK GENMASK(31, 16)
20 #define SYSCFG_IDC_REV_ID_SHIFT 16
21
22 /* Device Part Number (RPN) = OTP_DATA1 lower 11 bits */
23 #define RPN_SHIFT 0
24 #define RPN_MASK GENMASK(11, 0)
25
read_idc(void)26 static u32 read_idc(void)
27 {
28 void *syscfg = syscon_get_first_range(STM32MP_SYSCON_SYSCFG);
29
30 return readl(syscfg + SYSCFG_IDC_OFFSET);
31 }
32
get_cpu_dev(void)33 u32 get_cpu_dev(void)
34 {
35 return (read_idc() & SYSCFG_IDC_DEV_ID_MASK) >> SYSCFG_IDC_DEV_ID_SHIFT;
36 }
37
get_cpu_rev(void)38 u32 get_cpu_rev(void)
39 {
40 return (read_idc() & SYSCFG_IDC_REV_ID_MASK) >> SYSCFG_IDC_REV_ID_SHIFT;
41 }
42
43 /* Get Device Part Number (RPN) from OTP */
get_cpu_rpn(void)44 static u32 get_cpu_rpn(void)
45 {
46 return get_otp(BSEC_OTP_RPN, RPN_SHIFT, RPN_MASK);
47 }
48
get_cpu_type(void)49 u32 get_cpu_type(void)
50 {
51 return (get_cpu_dev() << 16) | get_cpu_rpn();
52 }
53
get_eth_nb(void)54 int get_eth_nb(void)
55 {
56 int nb_eth = 2;
57
58 switch (get_cpu_type()) {
59 case CPU_STM32MP131Dxx:
60 fallthrough;
61 case CPU_STM32MP131Cxx:
62 fallthrough;
63 case CPU_STM32MP131Axx:
64 nb_eth = 1;
65 break;
66 default:
67 nb_eth = 2;
68 break;
69 }
70
71 return nb_eth;
72 }
73
get_soc_name(char name[SOC_NAME_SIZE])74 void get_soc_name(char name[SOC_NAME_SIZE])
75 {
76 char *cpu_s, *cpu_r;
77
78 /* MPUs Part Numbers */
79 switch (get_cpu_type()) {
80 case CPU_STM32MP135Fxx:
81 cpu_s = "135F";
82 break;
83 case CPU_STM32MP135Dxx:
84 cpu_s = "135D";
85 break;
86 case CPU_STM32MP135Cxx:
87 cpu_s = "135C";
88 break;
89 case CPU_STM32MP135Axx:
90 cpu_s = "135A";
91 break;
92 case CPU_STM32MP133Fxx:
93 cpu_s = "133F";
94 break;
95 case CPU_STM32MP133Dxx:
96 cpu_s = "133D";
97 break;
98 case CPU_STM32MP133Cxx:
99 cpu_s = "133C";
100 break;
101 case CPU_STM32MP133Axx:
102 cpu_s = "133A";
103 break;
104 case CPU_STM32MP131Fxx:
105 cpu_s = "131F";
106 break;
107 case CPU_STM32MP131Dxx:
108 cpu_s = "131D";
109 break;
110 case CPU_STM32MP131Cxx:
111 cpu_s = "131C";
112 break;
113 case CPU_STM32MP131Axx:
114 cpu_s = "131A";
115 break;
116 default:
117 cpu_s = "????";
118 break;
119 }
120
121 /* REVISION */
122 switch (get_cpu_rev()) {
123 case CPU_REV1:
124 cpu_r = "A";
125 break;
126 case CPU_REV1_1:
127 cpu_r = "Z";
128 break;
129 case CPU_REV1_2:
130 cpu_r = "Y";
131 break;
132 default:
133 cpu_r = "?";
134 break;
135 }
136
137 snprintf(name, SOC_NAME_SIZE, "STM32MP%s Rev.%s", cpu_s, cpu_r);
138 }
139