| 1 | #!/usr/bin/env python3
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| 2 |
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| 3 | # SPDX-License-Identifier: MIT
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| 4 | # Copyright 2023 The LFS Editors
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| 5 |
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| 6 | # Stupid script to render "mconf"-style kernel configuration
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| 7 | # Usage: kernel-config.py [path to kernel tree] [needed config].toml
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| 8 | # The toml file should be like:
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| 9 | # for bool and tristate:
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| 10 | # EXT4="*"
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| 11 | # DRM="*M"
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| 12 | # EXPERT=" "
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| 13 | # DRM_I915="*M"
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| 14 | # for choice:
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| 15 | # HIGHMEM64G="X"
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| 16 | # an entry with comment:
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| 17 | # DRM_I915 = { value = " *M", comment = "for i915, crocus, or iris" }
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| 18 |
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| 19 | choice_bit = 1 << 30
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| 20 | ind0 = 0
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| 21 | ind1 = 0
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| 22 | menu_id = 1
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| 23 | stack = []
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| 24 | if_stack = []
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| 25 |
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| 26 | expand_var_mp = { 'SRCARCH': 'x86' }
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| 27 |
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| 28 | def expand_var(s):
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| 29 | for k in expand_var_mp:
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| 30 | s = s.replace('$(' + k + ')', expand_var_mp[k])
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| 31 | return s
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| 32 |
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| 33 | def pop_stack(cond):
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| 34 | global ind0, ind1, stack
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| 35 | assert(cond(stack[-1][0]))
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| 36 | s, i0, i1, _ = stack[-1]
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| 37 | stack = stack[:-1]
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| 38 | ind0 -= i0
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| 39 | ind1 -= i1
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| 40 |
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| 41 | def pop_stack_while(cond):
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| 42 | while len(stack) and cond(stack[-1][0]):
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| 43 | pop_stack(cond)
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| 44 |
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| 45 | def cur_menu():
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| 46 | global stack
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| 47 | return stack[-1][3] if len(stack) else 0
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| 48 |
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| 49 | def cur_if():
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| 50 | global if_stack
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| 51 | return if_stack[-1] if len(if_stack) else []
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| 52 |
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| 53 | def parse_config(buf):
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| 54 | global ind0, ind1, stack, menu_id
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| 55 | is_menu = buf[0].startswith('menu')
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| 56 | key = buf[0].split()[1].strip()
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| 57 |
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| 58 | deps = ['menu'] + cur_if()
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| 59 | title = None
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| 60 | klass = None
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| 61 | for line in buf[1:]:
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| 62 | line = line.strip()
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| 63 | if line.startswith('depends on '):
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| 64 | new_deps = line[len('depends on '):].split('&&')
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| 65 | deps += [x.strip() for x in new_deps]
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| 66 | else:
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| 67 | for prefix in ['tristate', 'bool', 'string']:
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| 68 | if line.startswith(prefix + ' '):
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| 69 | title = line[len(prefix) + 1:]
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| 70 | klass = prefix
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| 71 | elif line.startswith('def_' + prefix + ' '):
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| 72 | klass = prefix
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| 73 | elif line.startswith('prompt '):
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| 74 | title = line[len('prompt '):]
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| 75 |
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| 76 | pop_stack_while(lambda x: x not in deps)
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| 77 |
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| 78 | if key not in known_config:
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| 79 | return []
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| 80 | val = known_config[key]
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| 81 | comment = None
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| 82 | forced = None
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| 83 |
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| 84 | if type(val) == dict:
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| 85 | comment = val.get('comment')
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| 86 | forced = val.get('forced')
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| 87 | val = val['value']
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| 88 |
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| 89 | assert(title and klass)
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| 90 | title = title.strip().lstrip('"')
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| 91 | title = title[:title.find('"')]
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| 92 |
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| 93 | if klass == 'string':
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| 94 | val = '(' + val + ')'
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| 95 | else:
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| 96 | assert((val == 'X') == bool(cur_menu() & choice_bit))
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| 97 | if (val == 'X'):
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| 98 | val = '(X)'
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| 99 | else:
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| 100 | val = list(val)
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| 101 | val.sort()
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| 102 | for c in val:
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| 103 | if c not in 'M* ' or (c == 'M' and klass != 'tristate'):
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| 104 | raise Exception('unknown setting %s for %s' % (c, key))
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| 105 | bracket = None
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| 106 | if klass == 'tristate' and forced != '*' :
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| 107 | bracket = '{}' if forced else '<>'
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| 108 | else:
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| 109 | bracket = '--' if forced else '[]'
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| 110 |
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| 111 | val = bracket[0] + '/'.join(val) + bracket[1]
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| 112 |
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| 113 | arrow = ' --->' if is_menu else ''
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| 114 | r = [(ind0, val, ind1, title, arrow, key, cur_menu(), comment)]
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| 115 | menu_id += is_menu
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| 116 | stack_ent = (key, 2, 0, menu_id) if is_menu else (key, 0, 2, cur_menu())
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| 117 | ind0 += stack_ent[1]
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| 118 | ind1 += stack_ent[2]
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| 119 | stack += [stack_ent]
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| 120 | return r
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| 121 |
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| 122 | def parse_choice(buf):
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| 123 | global ind0, ind1, stack, menu_id
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| 124 | assert(buf[0] == 'choice\n')
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| 125 | title = ''
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| 126 | for line in buf:
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| 127 | line = line.strip()
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| 128 | if line.startswith('prompt '):
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| 129 | title = line[len('prompt '):].strip().strip('"')
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| 130 | r = [(ind0, "", ind1, title, ' --->', '', cur_menu(), None)]
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| 131 | menu_id += 1
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| 132 | stack += [('menu', 2, 0, menu_id | choice_bit)]
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| 133 | ind0 += 2
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| 134 | return r
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| 135 |
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| 136 | def load_kconfig(file):
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| 137 | global ind0, ind1, stack, path, menu_id, if_stack
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| 138 | r = []
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| 139 | config_buf = []
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| 140 | with open(path + file) as f:
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| 141 | for line in f:
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| 142 | if len(config_buf):
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| 143 | if not line.startswith('\t'):
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| 144 | if config_buf[0] == 'choice\n':
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| 145 | r += parse_choice(config_buf)
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| 146 | else:
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| 147 | r += parse_config(config_buf)
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| 148 | config_buf = []
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| 149 | else:
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| 150 | config_buf += [line]
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| 151 | continue
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| 152 | if line.startswith('source') or line.startswith('\tsource'):
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| 153 | sub = expand_var(line.strip().split()[1].strip('"'))
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| 154 | r += load_kconfig(sub)
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| 155 | elif line.startswith('config') or line.startswith('menuconfig'):
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| 156 | config_buf = [line]
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| 157 | elif line.startswith('choice'):
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| 158 | config_buf = [line]
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| 159 | elif line.startswith("menu"):
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| 160 | title = expand_var(line[4:].strip().strip('"'))
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| 161 | r += [(ind0, "", ind1, title, ' --->', '', cur_menu(), None)]
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| 162 | menu_id += 1
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| 163 | stack += [('menu', 2, 0, menu_id)]
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| 164 | ind0 += 2
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| 165 | elif line.startswith('endmenu') or line.startswith('endchoice'):
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| 166 | pop_stack_while(lambda x: x != 'menu')
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| 167 | pop_stack(lambda x: x == 'menu')
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| 168 | if r[-1][1] == "":
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| 169 | # prune empty menu
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| 170 | r = r[:-1]
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| 171 | elif line.startswith('if '):
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| 172 | line = line[3:]
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| 173 | top = cur_if()
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| 174 | top += [x.strip() for x in line.split("&&")]
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| 175 | if_stack += [top]
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| 176 | elif line.startswith('endif'):
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| 177 | if_stack = if_stack[:-1]
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| 178 | return r
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| 179 |
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| 180 | known_config = {}
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| 181 |
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| 182 | from sys import argv
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| 183 | import tomllib
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| 184 |
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| 185 | path = argv[1]
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| 186 | if path[-1] != '/':
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| 187 | path += '/'
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| 188 | with open(argv[2], 'rb') as f:
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| 189 | known_config = tomllib.load(f)
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| 190 |
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| 191 | r = load_kconfig("Kconfig")
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| 192 |
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| 193 | # Now we are going to pretty-print r
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| 194 |
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| 195 | ## Calculate the maximum value length for each menu
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| 196 | max_val_len = {}
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| 197 | for _, val, _, _, _, _, menu, _ in r:
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| 198 | x = max_val_len[menu] if menu in max_val_len else 0
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| 199 | max_val_len[menu] = max(x, len(val))
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| 200 |
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| 201 | ## Output
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| 202 |
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| 203 | max_line = 80
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| 204 | buf = []
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| 205 |
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| 206 | done = [x[5] for x in r]
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| 207 | for i in known_config:
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| 208 | if i not in done:
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| 209 | raise Exception("%s seems not exist" % i)
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| 210 |
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| 211 | for i0, val, i1, title, arrow, key, menu, comment in r:
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| 212 | if val:
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| 213 | val += (max_val_len[menu] - len(val)) * ' '
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| 214 | line = i0 * ' ' + val + (i1 + bool(val)) * ' '
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| 215 |
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| 216 | rem = max_line - len(line) - len(arrow)
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| 217 |
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| 218 | if len(title) > rem:
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| 219 | title = title[:rem - 3] + '...'
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| 220 |
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| 221 | line += title + arrow
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| 222 | rem = max_line - len(line)
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| 223 |
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| 224 | if key:
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| 225 | key = ' [' + key + ']'
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| 226 |
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| 227 | if len(key) <= rem:
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| 228 | line += (rem - len(key)) * ' ' + key
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| 229 | else:
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| 230 | key = '... ' + key
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| 231 | line += '\n' + ' ' * (max_line - len(key)) + key
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| 232 | if comment:
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| 233 | line = ' ' * i0 + '# ' + comment + ':\n' + line
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| 234 | buf += [line.replace('<', '<').replace('>', '>').rstrip()]
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| 235 |
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| 236 | import kernel_version
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| 237 | kver = kernel_version.kernel_version(path)
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| 238 |
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| 239 | print('''<?xml version="1.0" encoding="ISO-8859-1"?>
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| 240 | <!DOCTYPE note PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 241 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">''')
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| 242 | print('<!-- Automatically generated by kernel-config.py for Linux', kver)
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| 243 | print(' DO NOT EDIT! -->')
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| 244 | print('<screen><literal>' + '\n'.join(buf) + '</literal></screen>')
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