mbed library sources. Supersedes mbed-src.
Dependents: Hobbyking_Cheetah_Compact Hobbyking_Cheetah_Compact_DRV8323_14bit Hobbyking_Cheetah_Compact_DRV8323_V51_201907 HKC_MiniCheetah ... more
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hal/TARGET_FLASH_CMSIS_ALGO/flash_common_algo.c@181:36facd806e4a, 2018-07-30 (annotated)
- Committer:
- benkatz
- Date:
- Mon Jul 30 20:31:44 2018 +0000
- Revision:
- 181:36facd806e4a
- Parent:
- 160:d5399cc887bb
going on the robot. fixed a dumb bug in float_to_uint
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 160:d5399cc887bb | 1 | /* mbed Microcontroller Library |
<> | 160:d5399cc887bb | 2 | * Copyright (c) 2017 ARM Limited |
<> | 160:d5399cc887bb | 3 | * |
<> | 160:d5399cc887bb | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
<> | 160:d5399cc887bb | 5 | * you may not use this file except in compliance with the License. |
<> | 160:d5399cc887bb | 6 | * You may obtain a copy of the License at |
<> | 160:d5399cc887bb | 7 | * |
<> | 160:d5399cc887bb | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
<> | 160:d5399cc887bb | 9 | * |
<> | 160:d5399cc887bb | 10 | * Unless required by applicable law or agreed to in writing, software |
<> | 160:d5399cc887bb | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
<> | 160:d5399cc887bb | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
<> | 160:d5399cc887bb | 13 | * See the License for the specific language governing permissions and |
<> | 160:d5399cc887bb | 14 | * limitations under the License. |
<> | 160:d5399cc887bb | 15 | */ |
<> | 160:d5399cc887bb | 16 | |
<> | 160:d5399cc887bb | 17 | #include "flash_api.h" |
<> | 160:d5399cc887bb | 18 | #include "flash_data.h" |
<> | 160:d5399cc887bb | 19 | #include "mbed_critical.h" |
<> | 160:d5399cc887bb | 20 | |
<> | 160:d5399cc887bb | 21 | #define MBED_FLASH_ALGO_ERASE 1UL |
<> | 160:d5399cc887bb | 22 | #define MBED_FLASH_ALGO_PROGRAM 2UL |
<> | 160:d5399cc887bb | 23 | |
<> | 160:d5399cc887bb | 24 | extern uint32_t SystemCoreClock; |
<> | 160:d5399cc887bb | 25 | |
<> | 160:d5399cc887bb | 26 | /* |
<> | 160:d5399cc887bb | 27 | This binary blob (thumb code) sets r9 (static base) as the code we are jumping to |
<> | 160:d5399cc887bb | 28 | is PIC (position independent code). |
<> | 160:d5399cc887bb | 29 | |
<> | 160:d5399cc887bb | 30 | These are the instructions (r0 is a pointer to arg_t): |
<> | 160:d5399cc887bb | 31 | push {r5, lr, r4} |
<> | 160:d5399cc887bb | 32 | mov r5, r9 |
<> | 160:d5399cc887bb | 33 | push {r5} |
<> | 160:d5399cc887bb | 34 | ldr r5, [r0, #20] |
<> | 160:d5399cc887bb | 35 | ldr r3, [r0, #16] |
<> | 160:d5399cc887bb | 36 | mov r9, r3 |
<> | 160:d5399cc887bb | 37 | ldr r3, [r0, #12] |
<> | 160:d5399cc887bb | 38 | ldr r2, [r0, #8] |
<> | 160:d5399cc887bb | 39 | ldr r1, [r0, #4] |
<> | 160:d5399cc887bb | 40 | ldr r0, [r0, #0] |
<> | 160:d5399cc887bb | 41 | blx r5 |
<> | 160:d5399cc887bb | 42 | pop {r5} |
<> | 160:d5399cc887bb | 43 | mov r9, r5 |
<> | 160:d5399cc887bb | 44 | pop {r4-r5, pc} |
<> | 160:d5399cc887bb | 45 | bx r14 |
<> | 160:d5399cc887bb | 46 | */ |
<> | 160:d5399cc887bb | 47 | static uint32_t jump_to_flash_algo[] = { |
<> | 160:d5399cc887bb | 48 | 0x464DB530, |
<> | 160:d5399cc887bb | 49 | 0x6945B420, |
<> | 160:d5399cc887bb | 50 | 0x46996903, |
<> | 160:d5399cc887bb | 51 | 0x688268C3, |
<> | 160:d5399cc887bb | 52 | 0x68006841, |
<> | 160:d5399cc887bb | 53 | 0xBC2047A8, |
<> | 160:d5399cc887bb | 54 | 0xBD3046A9 |
<> | 160:d5399cc887bb | 55 | }; |
<> | 160:d5399cc887bb | 56 | |
<> | 160:d5399cc887bb | 57 | // should be called within critical section |
<> | 160:d5399cc887bb | 58 | static int32_t flash_algo_init(flash_t *obj, uint32_t address, uint32_t function) |
<> | 160:d5399cc887bb | 59 | { |
<> | 160:d5399cc887bb | 60 | args_t arguments = { |
<> | 160:d5399cc887bb | 61 | .r0 = address, |
<> | 160:d5399cc887bb | 62 | .r1 = SystemCoreClock, |
<> | 160:d5399cc887bb | 63 | .r2 = function, |
<> | 160:d5399cc887bb | 64 | .r3 = 0, |
<> | 160:d5399cc887bb | 65 | .r9 = (uint32_t)obj->flash_algo->algo_blob + obj->flash_algo->static_base, |
<> | 160:d5399cc887bb | 66 | .pc = (uint32_t)obj->flash_algo->algo_blob + obj->flash_algo->init |
<> | 160:d5399cc887bb | 67 | }; |
<> | 160:d5399cc887bb | 68 | return ((flash_algo_jump_t)(((uint32_t)&jump_to_flash_algo) | 1))(&arguments); |
<> | 160:d5399cc887bb | 69 | } |
<> | 160:d5399cc887bb | 70 | |
<> | 160:d5399cc887bb | 71 | // should be called within critical section |
<> | 160:d5399cc887bb | 72 | static int32_t flash_algo_uninit(flash_t *obj, uint32_t address, uint32_t function) |
<> | 160:d5399cc887bb | 73 | { |
<> | 160:d5399cc887bb | 74 | args_t arguments = { |
<> | 160:d5399cc887bb | 75 | .r0 = address, |
<> | 160:d5399cc887bb | 76 | .r1 = SystemCoreClock, |
<> | 160:d5399cc887bb | 77 | .r2 = function, |
<> | 160:d5399cc887bb | 78 | .r3 = 0, |
<> | 160:d5399cc887bb | 79 | .r9 = (uint32_t)obj->flash_algo->algo_blob + obj->flash_algo->static_base, |
<> | 160:d5399cc887bb | 80 | .pc = (uint32_t)obj->flash_algo->algo_blob + obj->flash_algo->uninit |
<> | 160:d5399cc887bb | 81 | }; |
<> | 160:d5399cc887bb | 82 | return ((flash_algo_jump_t)(((uint32_t)&jump_to_flash_algo) | 1))(&arguments); |
<> | 160:d5399cc887bb | 83 | } |
<> | 160:d5399cc887bb | 84 | |
<> | 160:d5399cc887bb | 85 | |
<> | 160:d5399cc887bb | 86 | int32_t flash_init(flash_t *obj) |
<> | 160:d5399cc887bb | 87 | { |
<> | 160:d5399cc887bb | 88 | flash_set_target_config(obj); |
<> | 160:d5399cc887bb | 89 | return 0; |
<> | 160:d5399cc887bb | 90 | } |
<> | 160:d5399cc887bb | 91 | |
<> | 160:d5399cc887bb | 92 | int32_t flash_free(flash_t *obj) |
<> | 160:d5399cc887bb | 93 | { |
<> | 160:d5399cc887bb | 94 | return 0; |
<> | 160:d5399cc887bb | 95 | } |
<> | 160:d5399cc887bb | 96 | |
<> | 160:d5399cc887bb | 97 | int32_t flash_erase_sector(flash_t *obj, uint32_t address) |
<> | 160:d5399cc887bb | 98 | { |
<> | 160:d5399cc887bb | 99 | core_util_critical_section_enter(); |
<> | 160:d5399cc887bb | 100 | flash_algo_init(obj, address, MBED_FLASH_ALGO_ERASE); |
<> | 160:d5399cc887bb | 101 | |
<> | 160:d5399cc887bb | 102 | args_t arguments = { |
<> | 160:d5399cc887bb | 103 | .r0 = address, |
<> | 160:d5399cc887bb | 104 | .r1 = 0, |
<> | 160:d5399cc887bb | 105 | .r2 = 0, |
<> | 160:d5399cc887bb | 106 | .r3 = 0, |
<> | 160:d5399cc887bb | 107 | .r9 = (uint32_t)obj->flash_algo->algo_blob + obj->flash_algo->static_base, |
<> | 160:d5399cc887bb | 108 | .pc = (uint32_t)obj->flash_algo->algo_blob + obj->flash_algo->erase_sector |
<> | 160:d5399cc887bb | 109 | }; |
<> | 160:d5399cc887bb | 110 | int32_t ret = ((flash_algo_jump_t)(((uint32_t)&jump_to_flash_algo) | 1))(&arguments); |
<> | 160:d5399cc887bb | 111 | |
<> | 160:d5399cc887bb | 112 | flash_algo_uninit(obj, address, MBED_FLASH_ALGO_ERASE); |
<> | 160:d5399cc887bb | 113 | core_util_critical_section_exit(); |
<> | 160:d5399cc887bb | 114 | return ret ? -1 : 0; |
<> | 160:d5399cc887bb | 115 | } |
<> | 160:d5399cc887bb | 116 | |
<> | 160:d5399cc887bb | 117 | |
<> | 160:d5399cc887bb | 118 | int32_t flash_program_page(flash_t *obj, uint32_t address, const uint8_t *data, uint32_t size) |
<> | 160:d5399cc887bb | 119 | { |
<> | 160:d5399cc887bb | 120 | core_util_critical_section_enter(); |
<> | 160:d5399cc887bb | 121 | flash_algo_init(obj, address, MBED_FLASH_ALGO_PROGRAM); |
<> | 160:d5399cc887bb | 122 | |
<> | 160:d5399cc887bb | 123 | args_t arguments = { |
<> | 160:d5399cc887bb | 124 | .r0 = address, |
<> | 160:d5399cc887bb | 125 | .r1 = size, |
<> | 160:d5399cc887bb | 126 | .r2 = (uint32_t)data, |
<> | 160:d5399cc887bb | 127 | .r3 = 0, |
<> | 160:d5399cc887bb | 128 | .r9 = (uint32_t)obj->flash_algo->algo_blob + obj->flash_algo->static_base, |
<> | 160:d5399cc887bb | 129 | .pc = (uint32_t)obj->flash_algo->algo_blob + obj->flash_algo->program_page |
<> | 160:d5399cc887bb | 130 | }; |
<> | 160:d5399cc887bb | 131 | int32_t ret = ((flash_algo_jump_t)(((uint32_t)&jump_to_flash_algo) | 1))(&arguments); |
<> | 160:d5399cc887bb | 132 | |
<> | 160:d5399cc887bb | 133 | flash_algo_uninit(obj, address, MBED_FLASH_ALGO_PROGRAM); |
<> | 160:d5399cc887bb | 134 | core_util_critical_section_exit(); |
<> | 160:d5399cc887bb | 135 | return ret ? -1 : 0; |
<> | 160:d5399cc887bb | 136 | } |
<> | 160:d5399cc887bb | 137 | |
<> | 160:d5399cc887bb | 138 | |
<> | 160:d5399cc887bb | 139 | uint32_t flash_get_sector_size(const flash_t *obj, uint32_t address) |
<> | 160:d5399cc887bb | 140 | { |
<> | 160:d5399cc887bb | 141 | const sector_info_t *sectors = obj->target_config->sectors; |
<> | 160:d5399cc887bb | 142 | |
<> | 160:d5399cc887bb | 143 | if (address >= obj->target_config->flash_start + obj->target_config->flash_size) { |
<> | 160:d5399cc887bb | 144 | return MBED_FLASH_INVALID_SIZE; |
<> | 160:d5399cc887bb | 145 | } |
<> | 160:d5399cc887bb | 146 | |
<> | 160:d5399cc887bb | 147 | int sector_index = obj->target_config->sector_info_count - 1; |
<> | 160:d5399cc887bb | 148 | for (; sector_index >= 0; sector_index--) { |
<> | 160:d5399cc887bb | 149 | if (address >= sectors[sector_index].start) { |
<> | 160:d5399cc887bb | 150 | return sectors[sector_index].size; |
<> | 160:d5399cc887bb | 151 | } |
<> | 160:d5399cc887bb | 152 | } |
<> | 160:d5399cc887bb | 153 | return MBED_FLASH_INVALID_SIZE; |
<> | 160:d5399cc887bb | 154 | } |
<> | 160:d5399cc887bb | 155 | |
<> | 160:d5399cc887bb | 156 | uint32_t flash_get_page_size(const flash_t *obj) |
<> | 160:d5399cc887bb | 157 | { |
<> | 160:d5399cc887bb | 158 | return obj->target_config->page_size; |
<> | 160:d5399cc887bb | 159 | } |
<> | 160:d5399cc887bb | 160 | |
<> | 160:d5399cc887bb | 161 | uint32_t flash_get_start_address(const flash_t *obj) |
<> | 160:d5399cc887bb | 162 | { |
<> | 160:d5399cc887bb | 163 | return obj->target_config->flash_start; |
<> | 160:d5399cc887bb | 164 | } |
<> | 160:d5399cc887bb | 165 | |
<> | 160:d5399cc887bb | 166 | uint32_t flash_get_size(const flash_t *obj) |
<> | 160:d5399cc887bb | 167 | { |
<> | 160:d5399cc887bb | 168 | return obj->target_config->flash_size; |
<> | 160:d5399cc887bb | 169 | } |