feat(plat/arm): update common platform RAS implementation
Refactor the RAS implementation to be used as common platform RAS
implementation for all the platforms. As part of refactoring this patch
extends support to configure interrupt as PPI interrupt type in addition
to currently supported SPI interrupts.
This patch defines a RAS config data structure to be defined by each
platform. The RAS config data structure carries the event map and size
information. Each platform code during initialization phase must define
this RAS config and register it with common platform RAS module.
Signed-off-by: Omkar Anand Kulkarni <omkar.kulkarni@arm.com>
Change-Id: I4019b31386a7e9c197bcc83bdca47876ee854d0f
diff --git a/plat/arm/css/sgi/ras/sgi_ras_common.c b/plat/arm/css/sgi/ras/sgi_ras_common.c
new file mode 100644
index 0000000..9789670
--- /dev/null
+++ b/plat/arm/css/sgi/ras/sgi_ras_common.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2018-2023, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <string.h>
+
+#include <bl31/interrupt_mgmt.h>
+#include <plat/common/platform.h>
+#include <platform_def.h>
+
+#include <sgi_ras.h>
+
+static struct plat_sgi_ras_config *sgi_ras_config;
+
+/*
+ * Find event map for a given interrupt number. On success, returns pointer to
+ * the event map. On error, returns NULL.
+ */
+struct sgi_ras_ev_map *sgi_find_ras_event_map_by_intr(uint32_t intr_num)
+{
+ struct sgi_ras_ev_map *map;
+ int size;
+ int i;
+
+ if (sgi_ras_config == NULL) {
+ ERROR("RAS config is NULL\n");
+ return NULL;
+ }
+
+ map = sgi_ras_config->ev_map;
+ size = sgi_ras_config->ev_map_size;
+
+ for (i = 0; i < size; i++) {
+ if (map->intr == intr_num)
+ return map;
+
+ map++;
+ }
+
+ return NULL;
+}
+
+/*
+ * Programs GIC registers and configures interrupt ID's as Group0 EL3
+ * interrupts. Current support is to register PPI and SPI interrupts.
+ */
+static void sgi_ras_intr_configure(int intr, int intr_type)
+{
+ plat_ic_set_interrupt_type(intr, INTR_TYPE_EL3);
+ plat_ic_set_interrupt_priority(intr, PLAT_RAS_PRI);
+ plat_ic_clear_interrupt_pending(intr);
+
+ /* Routing mode option available only for SPI interrupts */
+ if (intr_type == SGI_RAS_INTR_TYPE_SPI) {
+ plat_ic_set_spi_routing(intr, INTR_ROUTING_MODE_ANY,
+ (u_register_t)read_mpidr_el1());
+ }
+ plat_ic_enable_interrupt(intr);
+}
+
+/*
+ * Initialization function for the framework.
+ *
+ * Registers RAS config provided by the platform and then configures and
+ * enables interrupt for each registered error. On success, return 0.
+ */
+int sgi_ras_platform_setup(struct plat_sgi_ras_config *config)
+{
+ struct sgi_ras_ev_map *map;
+ int size;
+ int i;
+
+ /* Check if parameter is valid. */
+ if (config == NULL) {
+ ERROR("SGI: Failed to register RAS config\n");
+ return -1;
+ }
+
+ /*
+ * Maintain a reference to the platform RAS config data for later
+ * use.
+ */
+ sgi_ras_config = config;
+
+ map = sgi_ras_config->ev_map;
+ size = sgi_ras_config->ev_map_size;
+
+ for (i = 0; i < size; i++) {
+ sgi_ras_intr_configure(map->intr, map->intr_type);
+ map++;
+ }
+
+ INFO("SGI: Platform RAS setup successful\n");
+
+ return 0;
+}