core: add code for the interrupt framework

With this commit, we add three more GIC APIs for the kernel of OPTEE-OS:
itr_raise_sgi : can raise software generate interrupt(SGI) from secure
world to no-secure world, or secure world to secure world. It's a quick
communication between different worlds and different cores. Because SGI
is using the GIC N-N model, so with this API, every core can receive
the interrupt if want.

itr_raise_pi : can trigger the peripheral interrupt with the corresponding
interrupt number. When sending it to N cores, just one core can receive
the effective interrupt.

itr_set_affinity : can target the peripheral interrupt to the core you
want, it means that one can bind the interrupt to the corresponding core
use this API.

The usage may as follow:
itr_raise_sgi(11, 0x1 << 1)
it will raise SGI11 to core 1, and if you want not only core 1 can receive
SGI11 but also core 2, then you can change the code to
itr_raise_sgi(11, 0x1 << 1 || 0x1 << 2).

itr_set_affinity(61, 0x1 << 1)
itr_raise_pi(61)
These two APIs may use together, the operation set_affinity set the PI61
can just sent to core 1, then raise_pi, core 1 will receive the peripheral
interrupt 61.

Signed-off-by: Guanchao Liang <liang.guanchao@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Joakim Bech <joakim.bech@linaro.org>
Tested-by: Joakim Bech <joakim.bech@linaro.org> (QEMU)
[Update commit author to be same as S-o-b: above]
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/core/arch/arm/plat-vexpress/main.c b/core/arch/arm/plat-vexpress/main.c
index 4616a8b7..85ed9eec 100644
--- a/core/arch/arm/plat-vexpress/main.c
+++ b/core/arch/arm/plat-vexpress/main.c
@@ -170,7 +170,7 @@ KEEP_PAGER(console_itr);
 static TEE_Result init_console_itr(void)
 {
 	itr_add(&console_itr);
-	itr_enable(&console_itr);
+	itr_enable(IT_CONSOLE_UART);
 	return TEE_SUCCESS;
 }
 driver_init(init_console_itr);