1. 01 Apr, 2020 4 commits
    • Andrei Warkentin's avatar
      rpi: Implement PSCI CPU_OFF · 2e5f8443
      Andrei Warkentin authored
      We simulate the PSCI CPU_OFF operation by reseting the core via RMR.
      For secondaries, that already puts them in the holding pen waiting for a
      "warm boot" request as part of PSCI CPU_ON. For the BSP, we have to add
      logic to distinguish a regular boot from a CPU_OFF state, where, like the
      secondaries, the BSP needs to wait foor a "warm boot" request as part
      of CPU_ON.
      
      Testing done:
      
      - ACS suite now passes more tests (since it repeatedly
      calls code on secondaries via CPU_ON).
      
      - Linux testing including offlining/onlineing CPU0, e.g.
      "echo 0 > /sys/devices/system/cpu/cpu0/online".
      
      Change-Id: Id0ae11a0ee0721b20fa2578b54dadc72dcbd69e0
      Link: https://developer.trustedfirmware.org/T686
      
      Signed-off-by: default avatarAndrei Warkentin <andrey.warkentin@gmail.com>
      [Andre: adapt to unified plat_helpers.S, smaller fixes]
      Signed-off-by: default avatarAndre Przywara <andre.przywara@arm.com>
      2e5f8443
    • Andre Przywara's avatar
      rpi: rpi3_pwr_domain_on(): Use MMIO accessor · af2a4877
      Andre Przywara authored
      
      
      When writing to arbitrary locations in memory using a constructed
      pointer, there is no guarantee that the compiler does not optimise away
      the access, since it cannot detect any dependency.
      
      One typical solution is to use the "volatile" keyword, but using MMIO
      accessors in usually the better answer, to avoid torn writes.
      
      Replace the usage of an array with such an MMIO accessor function in
      rpi3_pwr_domain_on(), to make sure the write is really happening.
      
      Change-Id: Ia18163c95e92f1557471089fd18abc6dc7fee0c7
      Signed-off-by: default avatarAndre Przywara <andre.przywara@arm.com>
      af2a4877
    • Andre Przywara's avatar
      rpi: move plat_helpers.S to common · 07aa0c7e
      Andre Przywara authored
      
      
      The plat_helpers.S file was almost identical between its RPi3 and RPi4
      versions. Unify the two files, moving it into the common/ directory.
      
      This adds a plat_rpi_get_model() function, which can be used to trigger
      RPi4 specific action, detected at runtime. We use that to do the RPi4
      specific L2 cache initialisation.
      
      Change-Id: I2295704fd6dde7c76fe83b6d98c7bf998d4bf074
      Signed-off-by: default avatarAndre Przywara <andre.przywara@arm.com>
      07aa0c7e
    • Sandrine Bailleux's avatar
      0a43db84
  2. 31 Mar, 2020 24 commits
  3. 30 Mar, 2020 6 commits
  4. 27 Mar, 2020 6 commits