zynqmp: pm: Invalidate several clocks that Linux doesn't need to control
Linux has no reason to use these system and debug clocks and therefore
shouldn't access them. These clocks are marked as invalid in order to
prevent Linux from registering and querying them.
Note that despite clocks being marked as invalid a security issue
still remains in place as there is nothing that prevents the
non-secure world from gating these clocks and that way causing
damage to the system.
Signed-off-by: Mirela Simonovic <mirela.simonovic@aggios.com>
Acked-by: Will Wong <WILLW@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
diff --git a/plat/xilinx/zynqmp/pm_service/pm_api_clock.c b/plat/xilinx/zynqmp/pm_service/pm_api_clock.c
index 8901ea6..c49969f 100644
--- a/plat/xilinx/zynqmp/pm_service/pm_api_clock.c
+++ b/plat/xilinx/zynqmp/pm_service/pm_api_clock.c
@@ -2256,6 +2256,24 @@
static uint32_t pm_clk_invalid_list[] = {CLK_USB0, CLK_USB1, CLK_CSU_SPB,
CLK_ACPU_FULL,
CLK_ACPU_HALF,
+ CLK_DBG_FPD,
+ CLK_DBG_LPD,
+ CLK_DBG_TRACE,
+ CLK_DBG_TSTMP,
+ CLK_DDR_REF,
+ CLK_TOPSW_MAIN,
+ CLK_TOPSW_LSBUS,
+ CLK_GTGREF0_REF,
+ CLK_LPD_SWITCH,
+ CLK_LPD_LSBUS,
+ CLK_CPU_R5,
+ CLK_CPU_R5_CORE,
+ CLK_CSU_SPB,
+ CLK_CSU_PLL,
+ CLK_PCAP,
+ CLK_IOU_SWITCH,
+ CLK_DLL_REF,
+ CLK_TIMESTAMP_REF,
};
/**