Changes between Version 59 and Version 60 of boot_procedure


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Timestamp:
Mar 5, 2019, 6:25:09 PM (8 months ago)
Author:
alain
Comment:

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  • boot_procedure

    v59 v60  
    218218=== D10) Process init creation ===
    219219
    220 The core[0] in cluster[0] creates (i.e. allocates memory, and initializes) the process descriptor for the first user process. This includes the VMM initialization (both the user GPT and VSL inherits relevant informations from the kernel GPT and VSL).
     220The core[0] in cluster[0] creates (i.e. allocates memory, and initializes) the process descriptor for the first user process. This includes the VMM initialization : the user process GPT and VSL inherits relevant informations from the kernel process GPT and VSL.
    221221
    222222The core[0] in cluster[0] displays the ALMOS-MK banner.
    223223
    224 A last synchronization barrier is used before jumping to idle_thread function
    225 
    226 === D11) Enter idle_thread ===
    227 
    228 Finally, each core enables its private timer IRQ to activate its private scheduler, and jump to the idle_thread code,
    229 that contains an infinite loop waiting for an useful thread to be scheduled.
     224A last synchronization barrier is used before jumping to the idle_thread() function.
     225
     226=== D11) Scheduler activation ===
     227
     228Finally, all cores make the three following actions:
     229  * initialise the registers, defining the kernel entry point(s) in case of interrupt, exception or system call.
     230  * set the TICK timer, and unmask interrupts to activate the scheduler.
     231  * jump to the idle_thread() function, and wait for an useful thread to be scheduled.