1 files changed, 103 insertions, 0 deletions
diff --git a/plat/arm/common/fconf/fconf_sdei_getter.c b/plat/arm/common/fconf/fconf_sdei_getter.c
new file mode 100644
index 0000000..c26e316
--- /dev/null
+++ b/plat/arm/common/fconf/fconf_sdei_getter.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2019-2020, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#include <assert.h>
+
+#include <common/debug.h>
+#include <common/fdt_wrappers.h>
+#include <libfdt.h>
+#include <plat/arm/common/fconf_sdei_getter.h>
+
+#define PRIVATE_EVENT_NUM(i) private_events[3 * (i)]
+#define PRIVATE_EVENT_INTR(i) private_events[3 * (i) + 1]
+#define PRIVATE_EVENT_FLAGS(i) private_events[3 * (i) + 2]
+
+#define SHARED_EVENT_NUM(i) shared_events[3 * (i)]
+#define SHARED_EVENT_INTR(i) shared_events[3 * (i) + 1]
+#define SHARED_EVENT_FLAGS(i) shared_events[3 * (i) + 2]
+
+struct sdei_dyn_config_t sdei_dyn_config;
+
+int fconf_populate_sdei_dyn_config(uintptr_t config)
+{
+	uint32_t i;
+	int node, err;
+	uint32_t private_events[PLAT_SDEI_DP_EVENT_MAX_CNT * 3];
+	uint32_t shared_events[PLAT_SDEI_DS_EVENT_MAX_CNT * 3];
+
+	const void *dtb = (void *)config;
+
+	/* Check that the node offset points to compatible property */
+	node = fdt_node_offset_by_compatible(dtb, -1, "arm,sdei-1.0");
+	if (node < 0) {
+		ERROR("FCONF: Can't find 'arm,sdei-1.0' compatible node in dtb\n");
+		return node;
+	}
+
+	/* Read number of private mappings */
+	err = fdt_read_uint32(dtb, node, "private_event_count",
+				&sdei_dyn_config.private_ev_cnt);
+	if (err < 0) {
+		ERROR("FCONF: Read cell failed for 'private_event_count': %u\n",
+				sdei_dyn_config.private_ev_cnt);
+		return err;
+	}
+
+	/* Check if the value is in range */
+	if (sdei_dyn_config.private_ev_cnt > PLAT_SDEI_DP_EVENT_MAX_CNT) {
+		ERROR("FCONF: Invalid value for 'private_event_count': %u\n",
+				sdei_dyn_config.private_ev_cnt);
+		return -1;
+	}
+
+	/* Read private mappings */
+	err = fdt_read_uint32_array(dtb, node, "private_events",
+				sdei_dyn_config.private_ev_cnt * 3, private_events);
+	if (err < 0) {
+		ERROR("FCONF: Read cell failed for 'private_events': %d\n", err);
+		return err;
+	}
+
+	/* Move data to fconf struct */
+	for (i = 0; i < sdei_dyn_config.private_ev_cnt; i++) {
+		sdei_dyn_config.private_ev_nums[i]  = PRIVATE_EVENT_NUM(i);
+		sdei_dyn_config.private_ev_intrs[i] = PRIVATE_EVENT_INTR(i);
+		sdei_dyn_config.private_ev_flags[i] = PRIVATE_EVENT_FLAGS(i);
+	}
+
+	/* Read number of shared mappings */
+	err = fdt_read_uint32(dtb, node, "shared_event_count",
+				&sdei_dyn_config.shared_ev_cnt);
+	if (err < 0) {
+		ERROR("FCONF: Read cell failed for 'shared_event_count'\n");
+		return err;
+	}
+
+	/* Check if the value is in range */
+	if (sdei_dyn_config.shared_ev_cnt > PLAT_SDEI_DS_EVENT_MAX_CNT) {
+		ERROR("FCONF: Invalid value for 'shared_event_count': %u\n",
+				sdei_dyn_config.shared_ev_cnt);
+		return -1;
+	}
+
+	/* Read shared mappings */
+	err = fdt_read_uint32_array(dtb, node, "shared_events",
+				sdei_dyn_config.shared_ev_cnt * 3, shared_events);
+	if (err < 0) {
+		ERROR("FCONF: Read cell failed for 'shared_events': %d\n", err);
+		return err;
+	}
+
+	/* Move data to fconf struct */
+	for (i = 0; i < sdei_dyn_config.shared_ev_cnt; i++) {
+		sdei_dyn_config.shared_ev_nums[i]  = SHARED_EVENT_NUM(i);
+		sdei_dyn_config.shared_ev_intrs[i] = SHARED_EVENT_INTR(i);
+		sdei_dyn_config.shared_ev_flags[i] = SHARED_EVENT_FLAGS(i);
+	}
+
+	return 0;
+}
+
+FCONF_REGISTER_POPULATOR(HW_CONFIG, sdei, fconf_populate_sdei_dyn_config);