1. 18 Feb, 2020 1 commit
    • Ben Avison's avatar
      Get IRQs working · 72381d68
      Ben Avison authored
      Detail:
      * For now, this uses the legacy interrupt controller, whose register layout has
        unfortunately changed in some unhelpful ways. There is also a GICv2 in the
        SoC, which we will need to transition across to in order to use some of the
        newer peripherals (including USB3 and gigabit Ethernet).
      * This requires a corresponding set of changes to start.elf: substitute all
        three instances of &E30011E7 with &E3001000.
      * FIQs are not currently supported, as the legacy interrupt controller has
        changed how these are handled. It seems likely that we'll transition to
        GIC before too long, which means it's not worth bothering to implement them
        for the legacy interrupt controller.
      72381d68
  2. 07 Jul, 2018 1 commit
    • Jeffrey Lee's avatar
      Merge SMP branch to trunk · 06491820
      Jeffrey Lee authored
      Detail:
        hdr/StaticWS - Reserve workspace for QA7 peripheral address, HAL-wide spinlock, and doorbell device
        Makefile, s/DBell - Add doorbell device implementation
        hdr/BCM2835 - Clean up dead macros, add new macros for spinlock claim/release and basic CPU detection. Define new IRQ numbers for the "QA7" peripheral.
        hdr/CastleMacros, s/Top - Generate two HAL descriptors and entry point tables: One for single-core machines and one for multi-core machines. This avoids some MP-related overheads on ARM11 models of Pi. Implement SMP HAL entry points.
        s/Interrupts - Add support for the QA7 interrupts. Although some interrupts can be flexibly routed to different cores, we currently stick with a static scheme.
        s/Messaging - Use CPUDetect macro
      Admin:
        Untested
        Requires Kernel-6_09
      
      
      Version 0.76. Tagged as 'BCM2835-0_76'
      06491820
  3. 10 May, 2012 1 commit
    • Ben Avison's avatar
      Initial import of BCM2835 (Raspberry Pi) HAL · bfa96cd9
      Ben Avison authored
      Detail:
        Covers the basic functionality, but does require a customised start.elf
        to function. The vast majority is an entirely new implementation and is
        BSD licenced, but 4% (the Makefile and a handful of simple macros) are
        copied from pre-existing Castle-licenced code, so it lives under the
        "mixed" hierarchy. If other HALs are anything to go by, we'll end up
        having to add more Castle code (at least some C runtime functions) so it's
        probably juast as well.
      Admin:
        Code received from Adrian Lees
      bfa96cd9