alexander | 3c79893 | 2021-03-26 21:42:19 +0000 | [diff] [blame] | 1 | # Copyright (c) 2021 Arm Limited. All rights reserved. |
| 2 | # SPDX-License-Identifier: Apache-2.0 |
| 3 | # |
| 4 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | # you may not use this file except in compliance with the License. |
| 6 | # You may obtain a copy of the License at |
| 7 | # |
| 8 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | # |
| 10 | # Unless required by applicable law or agreed to in writing, software |
| 11 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | # See the License for the specific language governing permissions and |
| 14 | # limitations under the License. |
| 15 | |
| 16 | import os |
| 17 | from argparse import ArgumentParser |
| 18 | |
| 19 | """ |
| 20 | This file is used as part of post build steps to generate 'images.txt' file |
| 21 | which can be copied over onto the MPS3 board's SD card. The purpose is to |
| 22 | limit having to manually edit the file based on different load regions that |
| 23 | the build scatter file might dictate. |
| 24 | """ |
| 25 | |
| 26 | def is_commented(line): |
| 27 | if (line.startswith(";")): |
| 28 | return True |
| 29 | else: |
| 30 | return False |
| 31 | |
| 32 | |
| 33 | def is_load_rom(line): |
| 34 | load_region_specifiers = ['LOAD_ROM', 'LD_ROM', 'LOAD_REGION'] |
| 35 | |
| 36 | for load_specifier in load_region_specifiers: |
| 37 | if line.startswith(load_specifier): |
| 38 | return True |
| 39 | |
| 40 | return False |
| 41 | |
| 42 | |
| 43 | class TargetSubsystem: |
| 44 | |
| 45 | def __init__(self, target_subsystem_name: str): |
| 46 | """ |
| 47 | Constructor for target class. |
| 48 | Arguments: |
| 49 | target_subsystem_name: name of the target subsystem |
| 50 | """ |
| 51 | # Dict with mem map and binary names we expect |
| 52 | self.subsystems = { |
alexander | 3c79893 | 2021-03-26 21:42:19 +0000 | [diff] [blame] | 53 | "sse-300": { |
| 54 | "mmap_mcc" : { |
| 55 | # FPGA addr | MCC addr | |
| 56 | "0x00000000": "0x00000000", # ITCM (NS) |
| 57 | "0x01000000": "0x02000000", # BRAM or FPGA's data SRAM (NS) |
| 58 | "0x60000000": "0x08000000", # DDR (NS) |
| 59 | "0x70000000": "0x0c000000" # DDR (S) |
| 60 | }, |
| 61 | "bin_names": { |
| 62 | 0: "itcm.bin", |
| 63 | 1: "dram.bin" |
| 64 | } |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | self.name = target_subsystem_name |
| 69 | |
| 70 | |
| 71 | def is_supported(self, target_subsystem: str) -> bool: |
| 72 | """ |
| 73 | Checks if the target subsystem exists within systems |
| 74 | supported by this script |
| 75 | """ |
| 76 | if target_subsystem in self.subsystems.keys(): |
| 77 | return True |
| 78 | |
| 79 | print(f"Platforms supported: {self.subsystems.keys()}") |
| 80 | return False |
| 81 | |
| 82 | |
| 83 | def mps3_mappings(self) -> dict: |
| 84 | """ |
| 85 | Returns the FPGA <--> MCC address translations |
| 86 | as a dict |
| 87 | """ |
| 88 | if self.is_supported(self.name): |
| 89 | return self.subsystems[self.name]['mmap_mcc'] |
| 90 | return {} |
| 91 | |
| 92 | |
| 93 | def mps3_bin_names(self) -> dict: |
| 94 | """ |
| 95 | Returns expected binary names for the executable built |
| 96 | for Cortex-M55 or Cortex-M55+Ethos-U55 targets in the |
| 97 | form of a dict with index and name |
| 98 | """ |
| 99 | if self.is_supported(self.name): |
| 100 | return self.subsystems[self.name]['bin_names'] |
| 101 | |
| 102 | return {} |
| 103 | |
| 104 | |
| 105 | def main(args): |
| 106 | """ |
| 107 | Generates the output txt file with MCC to FPGA address mapping used |
| 108 | that is used by the MCC on FPGA to load executable regions into |
| 109 | correct regions in memory. |
| 110 | """ |
| 111 | # List out arguments used: |
| 112 | scatter_file_path = args.scatter_file_path |
| 113 | target_subsystem_name = args.target_subsystem |
| 114 | output_file_path = args.output_file_path |
| 115 | |
| 116 | target = TargetSubsystem(target_subsystem_name=target_subsystem_name) |
| 117 | |
| 118 | if target.is_supported(target_subsystem_name) != True: |
| 119 | print(f'Target {target_subsystem_name} not supported.') |
| 120 | return |
| 121 | |
| 122 | with open(scatter_file_path,'r') as scatter_file: |
| 123 | lines_read = scatter_file.readlines() |
| 124 | str_list = [] |
| 125 | |
| 126 | bin_names = None |
| 127 | mem_map = None |
| 128 | |
| 129 | mem_map = target.mps3_mappings() |
| 130 | bin_names = target.mps3_bin_names() |
| 131 | |
| 132 | str_list.append("TITLE: Arm MPS3 FPGA prototyping board Images Configuration File\n") |
| 133 | str_list.append("[IMAGES]\n\n") |
| 134 | |
| 135 | cnt = 0 |
| 136 | for line in lines_read: |
| 137 | if is_commented(line) or is_load_rom(line) != True: |
| 138 | continue |
| 139 | |
| 140 | addr = line.split()[1] |
| 141 | |
| 142 | if mem_map.get(addr, None) == None: |
| 143 | raise RuntimeError( |
| 144 | 'Translation for this address unavailable') |
| 145 | if cnt > len(bin_names): |
| 146 | raise RuntimeError( |
| 147 | f"bin names len exceeded: {cnt}") |
| 148 | |
| 149 | str_list.append("IMAGE" + str(cnt) + "ADDRESS: " + |
| 150 | mem_map[addr] + " ; MCC@" + mem_map[addr] + |
| 151 | " <=> FPGA@" + addr + "\n") |
| 152 | str_list.append("IMAGE" + str(cnt) + "UPDATE: AUTO\n") |
| 153 | str_list.append("IMAGE" + str(cnt) + "FILE: \SOFTWARE\\" + |
| 154 | bin_names[cnt] + "\n\n") |
| 155 | cnt += 1 |
| 156 | |
| 157 | if cnt > 0 and cnt < 33: |
| 158 | str_list.insert(2, |
| 159 | "TOTALIMAGES: {} ;Number of Images (Max: 32)\n\n".format( |
| 160 | cnt)) |
| 161 | else: |
| 162 | raise RuntimeError('Invalid image count') |
| 163 | |
| 164 | if os.path.exists(output_file_path): |
| 165 | os.remove(output_file_path) |
| 166 | print(''.join(str_list), file=open(output_file_path, "a")) |
| 167 | |
| 168 | |
| 169 | if __name__ == "__main__": |
| 170 | parser = ArgumentParser() |
| 171 | parser.add_argument("--scatter_file_path", type=str, required=True, |
| 172 | help="Path to the scatter file") |
| 173 | parser.add_argument("--target_subsystem", type=str, required=True, |
| 174 | help="Target subsystem in use") |
| 175 | parser.add_argument("--output_file_path", type=str, required=True, |
| 176 | help="Output file path") |
| 177 | args = parser.parse_args() |
| 178 | main(args) |