Patrick Delaunay | 123687c | 2022-05-20 18:24:46 +0200 | [diff] [blame] | 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 | |
Tom Rini | dec7ea0 | 2024-05-20 13:35:03 -0600 | [diff] [blame] | 8 | #include <config.h> |
Patrick Delaunay | 123687c | 2022-05-20 18:24:46 +0200 | [diff] [blame] | 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 | |
| 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 | |
| 33 | u32 get_cpu_dev(void) |
| 34 | { |
| 35 | return (read_idc() & SYSCFG_IDC_DEV_ID_MASK) >> SYSCFG_IDC_DEV_ID_SHIFT; |
| 36 | } |
| 37 | |
| 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 */ |
| 44 | static u32 get_cpu_rpn(void) |
| 45 | { |
| 46 | return get_otp(BSEC_OTP_RPN, RPN_SHIFT, RPN_MASK); |
| 47 | } |
| 48 | |
| 49 | u32 get_cpu_type(void) |
| 50 | { |
| 51 | return (get_cpu_dev() << 16) | get_cpu_rpn(); |
| 52 | } |
| 53 | |
Patrick Delaunay | 6425f58 | 2022-05-20 18:24:47 +0200 | [diff] [blame] | 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 | |
Patrick Delaunay | 123687c | 2022-05-20 18:24:46 +0200 | [diff] [blame] | 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; |
Patrick Delaunay | 95b0276 | 2022-06-30 10:20:16 +0200 | [diff] [blame] | 129 | case CPU_REV1_2: |
| 130 | cpu_r = "Y"; |
| 131 | break; |
Patrick Delaunay | 123687c | 2022-05-20 18:24:46 +0200 | [diff] [blame] | 132 | default: |
| 133 | cpu_r = "?"; |
| 134 | break; |
| 135 | } |
| 136 | |
| 137 | snprintf(name, SOC_NAME_SIZE, "STM32MP%s Rev.%s", cpu_s, cpu_r); |
| 138 | } |