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126 lines
3.1 KiB
Plaintext
126 lines
3.1 KiB
Plaintext
caps zonder size limit?
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invoke ipc: try sync; try receiver memory; try caller memory; fail.
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memories map:
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top
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- lcd
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- keyboard
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- sound
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- led
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- udc
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- battery
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- beeper
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- msc
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- nand
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- filesystem
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- network
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- top session manager
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- - user session
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- - - program container
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- - - - driver emulation
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- - - - driver emulation
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- - - - program
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- - - program container
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- - - - driver emulation
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- - - - program
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- - user session
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...
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te doen:
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- caps in init met een cap per process
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- die cap bevat caps in target memory met een cap per service
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- die cap bevat een user van de service
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- sysreq is geen aangeboden service, usbfs wel
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- sysreq schakelt tussen running processes incl. user switching.
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- display interface: put pixel commando
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- typewriter: print toetsen op scherm; shell?
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- terminal
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- emulaties automatisch per proces
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- start programma van filesystem
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- nand driver
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- filesystems met backing store
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Boot process:
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- bootinit and filesystem (and backing store) are started.
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- bootinit starts run.elf and loads init.elf.
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- run starts init.
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- init loads init.config and executes it.
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- during that process, the initial programs are killed.
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Order:
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run.elf
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init.elf
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init.config
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load.elf
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drivers
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emulations
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programs
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init.config is a script:
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# load <name> = <filename> load a file into memory. Don't use this after killbootthreads.
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load session = session.config
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load driver_lcd = lcd.elf
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load driver_buzzer = buzzer.elf
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load driver_gpio = gpio.elf
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load driver_audio = audio.elf
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load driver_udc = udc.elf
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load driver_nand = nand.elf
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load emu_lcd = emu_display.elf
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load emu_buzzer = emu_buzzer.elf
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load emu_keyboard = emu_keyboard.elf
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load emu_audio = emu_audio.elf
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load emu_udc = emu_udc.elf
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# killbootthreads destroy bootinit, bootfs and bootstore.
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killbootthreads
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# receive <cap> = <name> (<type> [, <index>]) prepare to accept a capability from a named program.
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receive display = driver_lcd (display)
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receive display_bright = driver_lcd (setting)
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receive buzzer = driver_buzzer (buzzer)
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receive keyboard = driver_gpio (keyboard, 0)
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receive sysreq = driver_gpio (keyboard, 1)
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receive audio = driver_audio (audio)
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receive udc = driver_udc (udc)
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receive nand = driver_nand (wstring)
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# driver <name> run a previously loaded program priviledged.
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driver driver_lcd
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driver driver_buzzer
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driver driver_gpio
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driver driver_audio
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driver driver_udc
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driver driver_nand
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# wait wait until all expected capabilities are received.
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wait
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# sysreq <cap> use a capability as the system request keyboard.
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sysreq sysreq
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# give <name> (<type> [, <index>]) = <cap> give this capability to this program when it requests it.
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give emu_display (display) = display
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give emu_display_bright (setting) = display_bright
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give emu_buzzer (buzzer) = buzzer
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give emu_keyboard (keyboard, 0) = keyboard
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give emu_audio (audio) = audio
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give emu_udc (udc) = udc
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# run <name> run a previously loaded program (normally).
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run emu_lcd
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run emu_buzzer
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run emu_keyboard
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run emu_audio
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run emu_udc
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# include <name> include a loaded file as another config file.
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include session
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# loop sit and do nothing (respond to system request).
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loop
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