From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 28 Apr 2024 11:13:47 +0200
Subject: Adding upstream version 2.8.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 plat/common/aarch64/plat_common.c | 104 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 plat/common/aarch64/plat_common.c

(limited to 'plat/common/aarch64/plat_common.c')

diff --git a/plat/common/aarch64/plat_common.c b/plat/common/aarch64/plat_common.c
new file mode 100644
index 0000000..8ce1d6c
--- /dev/null
+++ b/plat/common/aarch64/plat_common.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2014-2022, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <inttypes.h>
+#include <stdint.h>
+
+#include <arch_helpers.h>
+#include <common/debug.h>
+#include <drivers/console.h>
+#if RAS_EXTENSION
+#include <lib/extensions/ras.h>
+#endif
+#include <lib/xlat_tables/xlat_mmu_helpers.h>
+#include <plat/common/platform.h>
+
+/*
+ * The following platform setup functions are weakly defined. They
+ * provide typical implementations that may be re-used by multiple
+ * platforms but may also be overridden by a platform if required.
+ */
+#pragma weak bl31_plat_runtime_setup
+
+#if SDEI_SUPPORT
+#pragma weak plat_sdei_handle_masked_trigger
+#pragma weak plat_sdei_validate_entry_point
+#endif
+
+#pragma weak plat_ea_handler = plat_default_ea_handler
+
+void bl31_plat_runtime_setup(void)
+{
+	console_switch_state(CONSOLE_FLAG_RUNTIME);
+}
+
+/*
+ * Helper function for platform_get_pos() when platform compatibility is
+ * disabled. This is to enable SPDs using the older platform API to continue
+ * to work.
+ */
+unsigned int platform_core_pos_helper(unsigned long mpidr)
+{
+	int idx = plat_core_pos_by_mpidr(mpidr);
+	assert(idx >= 0);
+	return idx;
+}
+
+#if SDEI_SUPPORT
+/*
+ * Function that handles spurious SDEI interrupts while events are masked.
+ */
+void plat_sdei_handle_masked_trigger(uint64_t mpidr, unsigned int intr)
+{
+	WARN("Spurious SDEI interrupt %u on masked PE %" PRIx64 "\n", intr, mpidr);
+}
+
+/*
+ * Default Function to validate SDEI entry point, which returns success.
+ * Platforms may override this with their own validation mechanism.
+ */
+int plat_sdei_validate_entry_point(uintptr_t ep, unsigned int client_mode)
+{
+	return 0;
+}
+#endif
+
+const char *get_el_str(unsigned int el)
+{
+	if (el == MODE_EL3) {
+		return "EL3";
+	} else if (el == MODE_EL2) {
+		return "EL2";
+	}
+	return "EL1";
+}
+
+/* RAS functions common to AArch64 ARM platforms */
+void plat_default_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie,
+		void *handle, uint64_t flags)
+{
+#if RAS_EXTENSION
+	/* Call RAS EA handler */
+	int handled = ras_ea_handler(ea_reason, syndrome, cookie, handle, flags);
+	if (handled != 0)
+		return;
+#endif
+	unsigned int level = (unsigned int)GET_EL(read_spsr_el3());
+
+	ERROR_NL();
+	ERROR("Unhandled External Abort received on 0x%lx from %s\n",
+		read_mpidr_el1(), get_el_str(level));
+	ERROR("exception reason=%u syndrome=0x%" PRIx64 "\n", ea_reason, syndrome);
+#if HANDLE_EA_EL3_FIRST_NS
+	/* Skip backtrace for lower EL */
+	if (level != MODE_EL3) {
+		console_flush();
+		do_panic();
+	}
+#endif
+	panic();
+}
-- 
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