1. 24 Jan, 2021 6 commits
    • Samuel Holland's avatar
      allwinner: psci: Drop .pwr_domain_pwr_down_wfi callback · 975d076d
      Samuel Holland authored
      
      
      When operating on the local cpu, sunxi_cpu_power_off_self() only "arms"
      the ARISC to perform the power-off process; the SCP waits for the CPU to
      enter WFI before acutally powering it off. Since this matches the
      expected split between .pwr_domain_off and .pwr_domain_pwr_down_wfi, we
      can move the sunxi_cpu_power_off_self() call to sunxi_pwr_domain_off().
      Since that change makes sunxi_pwr_down_wfi() equivalent to the default
      implementation, the callback is no longer needed.
      
      Change-Id: I7d65f66c550d1c69fa5e9945affd7a25b3d3ef42
      Signed-off-by: default avatarSamuel Holland <samuel@sholland.org>
      975d076d
    • Samuel Holland's avatar
      allwinner: Separate code to power off self and other CPUs · a1d349be
      Samuel Holland authored
      
      
      Currently, sunxi_cpu_off() has two separate code paths: one for the
      local CPU, and one for other CPUs. Let's split them in to two functions.
      This actually simplifies things, because all callers either operate on
      the local CPU only (sunxi_pwr_down_wfi()) or other CPUs only
      (sunxi_cpu_power_off_others()). This avoids needing a second MPIDR read
      to choose the appropriate code path.
      
      Change-Id: I55de85025235cc95466bfa106831fc4c2368f527
      Signed-off-by: default avatarSamuel Holland <samuel@sholland.org>
      a1d349be
    • Samuel Holland's avatar
      allwinner: Leave CPU power alone during BL31 setup · ed267c92
      Samuel Holland authored
      
      
      Disabling secondary CPUs during boot is unnecessary because the other
      CPUs are already in reset, and it saves an entirely insignificant amount
      of power. Let's remove this bit of code that was added mostly "because
      we can", and along with it remove an unconditional dependency on the CPU
      ops functions.
      Signed-off-by: default avatarSamuel Holland <samuel@sholland.org>
      Change-Id: Ia77a1b722da6ba989c3992b656a6cde3f2238fd7
      ed267c92
    • Samuel Holland's avatar
      allwinner: psci: Invert check in .validate_ns_entrypoint · 814dce8f
      Samuel Holland authored
      
      
      Checking the exceptional case and letting the success case fall through
      is not only more idiomatic, but it also allows adding more exceptional
      cases in the future, such as a check for overlapping secure DRAM.
      
      Change-Id: I720441a6a8853fd7f211ebe851f14d921a6db03d
      Signed-off-by: default avatarSamuel Holland <samuel@sholland.org>
      814dce8f
    • Samuel Holland's avatar
      allwinner: psci: Drop MPIDR check from .pwr_domain_on · 772ef7e7
      Samuel Holland authored
      
      
      This duplicated the logic in psci_validate_mpidr() which was already
      called from psci_cpu_on().
      
      Change-Id: I96ee92f1ce3e9cc2985b4e229ba86ebd27b79915
      Signed-off-by: default avatarSamuel Holland <samuel@sholland.org>
      772ef7e7
    • Samuel Holland's avatar
      allwinner: psci: Drop .get_node_hw_state callback · a1473c99
      Samuel Holland authored
      
      
      This optional PSCI function was only implemented when SCPI was
      available. However, the underlying SCPI function is not able to fulfill
      the necessary contract. First, the SCPI protocol has no way to represent
      HW_STANDBY at the CPU power level. Second, the SCPI implementation
      maintains its own logical view of power states, and its implementation
      of SCPI_CMD_GET_CSS_POWER_STATE does not actually query the hardware.
      Thus it cannot provide "the physical view of power state", as required
      for this function by the PSCI specification.
      
      Since the function is optional, drop it.
      
      Change-Id: I5f3a0810ac19ddeb3c0c5d35aeb09f09a0b80c1d
      Signed-off-by: default avatarSamuel Holland <samuel@sholland.org>
      a1473c99
  2. 22 Jan, 2021 1 commit
  3. 20 Jan, 2021 3 commits
    • Ming Huang's avatar
      plat/arm/css/sgi: Fix assert expression issue · 0301d09c
      Ming Huang authored
      
      
      Violation of MISRA-C Rule 14.4
      Signed-off-by: default avatarMing Huang <huangming@linux.alibaba.com>
      Change-Id: I44ef50dadb54fb056a91f3de962b6e63ba6d7ac4
      0301d09c
    • Ming Huang's avatar
      plat/arm/css/sgi: Fix bl32 receive event - 0xC4000061 issue · 9feb1e2f
      Ming Huang authored
      
      
      The issue is that, when interrupt is triggered and RAS handler
      is entered, after interrupt handler finishes, TF-A will re-enter
      bl32 and then crash.
      sdei_dispatch_event() may return failing result in some cases,
      for example kernel may not have registered a handler or RAS event
      may happen early during boot. We restore the NS context when
      sdei_dispatch_event() returns failing result.
      
      error log :
      Received delegated event
      X0 :  0xC4000061
      X1 :  0x0
      X2 :  0x0
      X3 :  0x0
      Received event - 0xC4000061 on cpu 0
      UnRecognized Event - 0xC4000061
      Failed delegated event 0xC4000061, Status Invalid Parameter
      Unhandled Exception in EL3.
      x30            = 0x000000000401f700
      x0             = 0xfffffffffffffffe
      x1             = 0xfffffffffffffffe
      x2             = 0x00000000600003c0
      Signed-off-by: default avatarMing Huang <huangming@linux.alibaba.com>
      Change-Id: I9802e9a32eee0ac3b5a8bcc0362d0b0e3b71dc9f
      9feb1e2f
    • Rajan Vaja's avatar
      plat: xilinx: versal: Remove code duplication · f621d5fb
      Rajan Vaja authored
      
      
      Some switch cases uses same operation. So, club switch cases
      which uses same operation and remove duplicate code.
      Signed-off-by: default avatarRajan Vaja <rajan.vaja@xilinx.com>
      Change-Id: I260b474c0ff3f2ca102c32d4af2e4abba2b8f57c
      f621d5fb
  4. 19 Jan, 2021 4 commits
  5. 13 Jan, 2021 25 commits
  6. 12 Jan, 2021 1 commit