sc7180 platform support
Adding support for QTI CHIP SC7180 on ATF
Change-Id: I0d82d3a378036003fbd0bc4784f61464bb76ea82
Signed-off-by: Saurabh Gorecha <sgorecha@codeaurora.org>
Co-authored-by: Maulik Shah <mkshah@codeaurora.org>
diff --git a/plat/qti/common/src/qti_interrupt_svc.c b/plat/qti/common/src/qti_interrupt_svc.c
new file mode 100644
index 0000000..89cd7b5
--- /dev/null
+++ b/plat/qti/common/src/qti_interrupt_svc.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018,2020, The Linux Foundation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#include <assert.h>
+#include <stdint.h>
+
+#include <arch_helpers.h>
+#include <bl31/interrupt_mgmt.h>
+#include <drivers/arm/gic_common.h>
+#include <lib/el3_runtime/context_mgmt.h>
+
+#include <platform.h>
+#include <qti_interrupt_svc.h>
+#include <qtiseclib_interface.h>
+
+#define QTI_INTR_INVALID_INT_NUM 0xFFFFFFFFU
+
+/*
+ * Top-level EL3 interrupt handler.
+ */
+static uint64_t qti_el3_interrupt_handler(uint32_t id, uint32_t flags,
+ void *handle, void *cookie)
+{
+ uint32_t irq = QTI_INTR_INVALID_INT_NUM;
+
+ /*
+ * EL3 non-interruptible. Interrupt shouldn't occur when we are at
+ * EL3 / Secure.
+ */
+ assert(handle != cm_get_context(SECURE));
+
+ irq = plat_ic_acknowledge_interrupt();
+
+ qtiseclib_invoke_isr(irq, handle);
+
+ /* End of Interrupt. */
+ if (irq < 1022U) {
+ plat_ic_end_of_interrupt(irq);
+ }
+
+ return (uint64_t) handle;
+}
+
+int qti_interrupt_svc_init(void)
+{
+ int ret;
+ uint64_t flags = 0U;
+
+ /*
+ * Route EL3 interrupts to EL3 when in Non-secure.
+ * Note: EL3 won't have interrupt enable
+ * & we don't have S-EL1 support.
+ */
+ set_interrupt_rm_flag(flags, NON_SECURE);
+
+ /* Register handler for EL3 interrupts */
+ ret = register_interrupt_type_handler(INTR_TYPE_EL3,
+ qti_el3_interrupt_handler, flags);
+ assert(ret == 0);
+
+ return ret;
+}