Merge "feat(fvp): introduce PLATFORM_TEST_EA_FFH config" into integration
diff --git a/plat/arm/board/fvp/aarch64/fvp_ea.c b/plat/arm/board/fvp/aarch64/fvp_ea.c
new file mode 100644
index 0000000..07053a9
--- /dev/null
+++ b/plat/arm/board/fvp/aarch64/fvp_ea.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2023, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <inttypes.h>
+#include <stdint.h>
+
+#include <arch_helpers.h>
+#include <bl31/ea_handle.h>
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <context.h>
+#include <lib/el3_runtime/context_mgmt.h>
+#include <plat/common/platform.h>
+
+/*
+ * This source file with custom plat_ea_handler function is compiled only when
+ * building TF-A with compile option PLATFORM_TEST_EA_FFH
+ */
+
+/* Test address(non-existent) used in tftf to cause External aborts */
+#define TEST_ADDRESS UL(0x7FFFF000)
+
+void plat_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie,
+ void *handle, uint64_t flags)
+{
+#ifdef PLATFORM_TEST_EA_FFH
+ u_register_t elr_el3;
+ u_register_t fault_address;
+ cpu_context_t *ctx = cm_get_context(NON_SECURE);
+ el3_state_t *el3_ctx = get_el3state_ctx(ctx);
+ gp_regs_t *gpregs_ctx = get_gpregs_ctx(ctx);
+ unsigned int level = (unsigned int)GET_EL(read_spsr_el3());
+
+ fault_address = read_ctx_reg(gpregs_ctx, CTX_GPREG_X0);
+
+ if ((level < MODE_EL3) && (fault_address == TEST_ADDRESS)) {
+ if (ea_reason == ERROR_EA_SYNC) {
+ INFO("Handled sync EA from lower EL at address 0x%lx\n", fault_address);
+ /* To avoid continuous faults, forward return address */
+ elr_el3 = read_ctx_reg(el3_ctx, CTX_ELR_EL3);
+ elr_el3 += 4;
+ write_ctx_reg(el3_ctx, CTX_ELR_EL3, elr_el3);
+ return;
+ } else if (ea_reason == ERROR_EA_ASYNC) {
+ INFO("Handled Serror from lower EL at address 0x%lx\n", fault_address);
+ return;
+ }
+ }
+#endif
+ plat_default_ea_handler(ea_reason, syndrome, cookie, handle, flags);
+}
diff --git a/plat/arm/board/fvp/platform.mk b/plat/arm/board/fvp/platform.mk
index fe6ccb2..af082ba 100644
--- a/plat/arm/board/fvp/platform.mk
+++ b/plat/arm/board/fvp/platform.mk
@@ -502,3 +502,11 @@
endif
PSCI_OS_INIT_MODE := 1
+
+$(eval $(call add_define,PLATFORM_TEST_EA_FFH))
+ifeq (${PLATFORM_TEST_EA_FFH}, 1)
+ ifeq (${HANDLE_EA_EL3_FIRST_NS}, 0)
+ $(error "PLATFORM_TEST_EA_FFH expects HANDLE_EA_EL3_FIRST_NS to be 1")
+ endif
+BL31_SOURCES += plat/arm/board/fvp/aarch64/fvp_ea.c
+endif