Do gic cpu initialization based on EL level which u-boot enters. U-Boot can't access EL3 regs when runs in EL2/EL1, etc.
Signed-off-by: Michal Simek michal.simek@xilinx.com ---
arch/arm/lib/gic_64.S | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/arch/arm/lib/gic_64.S b/arch/arm/lib/gic_64.S index 745c7858da79..155212a419be 100644 --- a/arch/arm/lib/gic_64.S +++ b/arch/arm/lib/gic_64.S @@ -107,6 +107,8 @@ ENTRY(gic_init_secure_percpu) mov w11, #0x1 /* Enable SGI 0 */ str w11, [x10, GICR_ISENABLERn]
+ switch_el x10, 3f, 2f, 1f +3: /* Initialize Cpu Interface */ mrs x10, ICC_SRE_EL3 orr x10, x10, #0xf /* SRE & Disable IRQ/FIQ Bypass & */ @@ -114,19 +116,19 @@ ENTRY(gic_init_secure_percpu) msr ICC_SRE_EL3, x10 isb
- mrs x10, ICC_SRE_EL2 - orr x10, x10, #0xf /* SRE & Disable IRQ/FIQ Bypass & */ - /* Allow EL1 access to ICC_SRE_EL1 */ - msr ICC_SRE_EL2, x10 - isb - mov x10, #0x3 /* EnableGrp1NS | EnableGrp1S */ msr ICC_IGRPEN1_EL3, x10 isb
msr ICC_CTLR_EL3, xzr isb - +2: + mrs x10, ICC_SRE_EL2 + orr x10, x10, #0xf /* SRE & Disable IRQ/FIQ Bypass & */ + /* Allow EL1 access to ICC_SRE_EL1 */ + msr ICC_SRE_EL2, x10 + isb +1: msr ICC_CTLR_EL1, xzr /* NonSecure ICC_CTLR_EL1 */ isb