Hi,
I am running arm-trusted-firmware on Juno and when I breakthrough DS-5 on EL3 level I see FIQ pending status in ISR_EL1.
I am trying to bring-up linux guest OS and when I try to run linux image I am entering virtual FIQ handler at EL2 level.
Please let me know if there is any way I can ignore this FIQ pending ?
I tried using GICC_CTLR and GICV_CTLR registers bit 0 to disable Group0 (FIQs) interrupts but it is not helping.
Thanks,
For simplicity I just run below as specified in the tutorial to gain control at EL3 level and dump the GICC registers
GICC_CTLR (0x2c02f000) = 0x6B = (bit 2 AckCtl = 0)
GICC_IAR (0x2c02f00C) = 0x1D = (Interrupt ID = 29)
GICC_HPPIR (0x2c02f018) = 0x3FE = (Interrupt ID = 254)
ISR_EL1 = 0x40 (One FIQ pending)
Commands running on Juno
--------------------------------------------
core apply all set var $AARCH64::$System::$Other::$SCTLR_EL3 = 0x0
core apply all set var $AARCH64::$System::$Secure::$SCR_EL3 = 0x00000000
set var $AARCH64::$System::$PSTATE::$DAIF.D = 1
set var $AARCH64::$System::$PSTATE::$DAIF.A = 1
set var $AARCH64::$System::$PSTATE::$DAIF.I = 1
set var $AARCH64::$System::$PSTATE::$DAIF.F = 1
set var $AARCH64::$System::$PSTATE::$Mode.M = 13
memory set_typed AXI<PROT=1>:0x000000002A4A0140 (unsigned int) 0x80000000