refactor(sgi): move from "sgi" to "neoverse_rd"
Currently, reference design platforms such as RD-N2, RD-N1-Edge,
RD-V1-MC, RD-V1 and SGI-575 utilize "css/sgi" as the common source
directory. The "sgi" prefix originated from the System Guidance for
Infrastructure (SGI) and was initially associated with the SGI-575
platform. However, subsequent platforms released were under the Neoverse
Reference Design product name.
To align with the Neoverse Reference Design nomenclature, rename the
common source directory from "css/sgi" to "css/neoverse_rd" and update
all file prefixes from "sgi" to "nrd."
Signed-off-by: Rohit Mathew <Rohit.Mathew@arm.com>
Change-Id: I3dcbb31b9ab202e82caf25218ba33c520dcea4e4
diff --git a/plat/arm/css/neoverse_rd/ras/nrd_ras_cpu.c b/plat/arm/css/neoverse_rd/ras/nrd_ras_cpu.c
new file mode 100644
index 0000000..71d1775
--- /dev/null
+++ b/plat/arm/css/neoverse_rd/ras/nrd_ras_cpu.c
@@ -0,0 +1,211 @@
+/*
+ * Copyright (c) 2023-2024, 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 <lib/el3_runtime/context_mgmt.h>
+#include <lib/extensions/ras.h>
+#include <plat/common/platform.h>
+#include <services/sdei.h>
+#include <services/spm_mm_svc.h>
+
+#include <nrd_ras.h>
+
+#define CPU_CONTEXT_REG_GPR_ARR_SIZE 32
+#define CPU_CONTEXT_REG_EL1_ARR_SIZE 17
+#define CPU_CONTEXT_REG_EL2_ARR_SIZE 16
+#define CPU_CONTEXT_REG_EL3_ARR_SIZE 10
+
+/*
+ * MM Communicate message header GUID to indicate the payload is intended for
+ * CPU MM driver.
+ */
+struct efi_guid cpu_ecc_event_guid = {
+ 0x2c1b3bfc, 0x42cd, 0x4a66,
+ {0xac, 0xd1, 0xa4, 0xd1, 0x63, 0xe9, 0x90, 0xf6}
+ };
+
+/*
+ * CPU error information data structure communicated as part of MM
+ * Communication data payload.
+ */
+typedef struct {
+ uint64_t ErrStatus;
+ uint64_t ErrMisc0;
+ uint64_t ErrAddr;
+ uint64_t SecurityState;
+ uint64_t ErrCtxGpr[CPU_CONTEXT_REG_GPR_ARR_SIZE];
+ uint64_t ErrCtxEl1Reg[CPU_CONTEXT_REG_EL1_ARR_SIZE];
+ uint64_t ErrCtxEl2Reg[CPU_CONTEXT_REG_EL2_ARR_SIZE];
+ uint64_t ErrCtxEl3Reg[CPU_CONTEXT_REG_EL3_ARR_SIZE];
+} cpu_err_info;
+
+/*
+ * Reads the CPU context and error information from the relevant registers and
+ * populates the CPU error information data structure.
+ */
+static void populate_cpu_err_data(cpu_err_info *cpu_info,
+ uint64_t security_state)
+{
+ void *ctx;
+
+ ctx = cm_get_context(security_state);
+
+ cpu_info->ErrStatus = read_erxstatus_el1();
+ cpu_info->ErrMisc0 = read_erxmisc0_el1();
+ cpu_info->ErrAddr = read_erxaddr_el1();
+ cpu_info->SecurityState = security_state;
+
+ /* populate CPU EL1 context information. */
+ cpu_info->ErrCtxEl1Reg[0] = read_ctx_reg(get_el1_sysregs_ctx(ctx),
+ CTX_ELR_EL1);
+ cpu_info->ErrCtxEl1Reg[1] = read_ctx_reg(get_el1_sysregs_ctx(ctx),
+ CTX_ESR_EL1);
+ cpu_info->ErrCtxEl1Reg[2] = read_ctx_reg(get_el1_sysregs_ctx(ctx),
+ CTX_FAR_EL1);
+ cpu_info->ErrCtxEl1Reg[3] = read_isr_el1();
+ cpu_info->ErrCtxEl1Reg[4] = read_ctx_reg(get_el1_sysregs_ctx(ctx),
+ CTX_MAIR_EL1);
+ cpu_info->ErrCtxEl1Reg[5] = read_midr_el1();
+ cpu_info->ErrCtxEl1Reg[6] = read_mpidr_el1();
+ cpu_info->ErrCtxEl1Reg[7] = read_ctx_reg(get_el1_sysregs_ctx(ctx),
+ CTX_SCTLR_EL1);
+ cpu_info->ErrCtxEl1Reg[8] = read_ctx_reg(get_gpregs_ctx(ctx),
+ CTX_GPREG_SP_EL0);
+ cpu_info->ErrCtxEl1Reg[9] = read_ctx_reg(get_el1_sysregs_ctx(ctx),
+ CTX_SP_EL1);
+ cpu_info->ErrCtxEl1Reg[10] = read_ctx_reg(get_el1_sysregs_ctx(ctx),
+ CTX_SPSR_EL1);
+ cpu_info->ErrCtxEl1Reg[11] = read_ctx_reg(get_el1_sysregs_ctx(ctx),
+ CTX_TCR_EL1);
+ cpu_info->ErrCtxEl1Reg[12] = read_ctx_reg(get_el1_sysregs_ctx(ctx),
+ CTX_TPIDR_EL0);
+ cpu_info->ErrCtxEl1Reg[13] = read_ctx_reg(get_el1_sysregs_ctx(ctx),
+ CTX_TPIDR_EL1);
+ cpu_info->ErrCtxEl1Reg[14] = read_ctx_reg(get_el1_sysregs_ctx(ctx),
+ CTX_TPIDRRO_EL0);
+ cpu_info->ErrCtxEl1Reg[15] = read_ctx_reg(get_el1_sysregs_ctx(ctx),
+ CTX_TTBR0_EL1);
+ cpu_info->ErrCtxEl1Reg[16] = read_ctx_reg(get_el1_sysregs_ctx(ctx),
+ CTX_TTBR1_EL1);
+
+#if CTX_INCLUDE_EL2_REGS
+ cpu_info->ErrCtxEl2Reg[0] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_ELR_EL2);
+ cpu_info->ErrCtxEl2Reg[1] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_ESR_EL2);
+ cpu_info->ErrCtxEl2Reg[2] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_FAR_EL2);
+ cpu_info->ErrCtxEl2Reg[3] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_HACR_EL2);
+ cpu_info->ErrCtxEl2Reg[4] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_HCR_EL2);
+ cpu_info->ErrCtxEl2Reg[5] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_HPFAR_EL2);
+ cpu_info->ErrCtxEl2Reg[6] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_MAIR_EL2);
+ cpu_info->ErrCtxEl2Reg[7] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_SCTLR_EL2);
+ cpu_info->ErrCtxEl2Reg[8] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_SP_EL2);
+ cpu_info->ErrCtxEl2Reg[9] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_SPSR_EL2);
+ cpu_info->ErrCtxEl2Reg[10] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_TCR_EL2);
+ cpu_info->ErrCtxEl2Reg[11] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_TPIDR_EL2);
+ cpu_info->ErrCtxEl2Reg[12] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_TTBR0_EL2);
+ cpu_info->ErrCtxEl2Reg[13] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_VTCR_EL2);
+ cpu_info->ErrCtxEl2Reg[14] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_VTTBR_EL2);
+ cpu_info->ErrCtxEl2Reg[15] = read_ctx_reg(get_el2_sysregs_ctx(ctx),
+ CTX_ESR_EL2);
+#endif
+
+ cpu_info->ErrCtxEl3Reg[0] = read_ctx_reg(get_el3state_ctx(ctx),
+ CTX_ELR_EL3);
+ cpu_info->ErrCtxEl3Reg[1] = read_ctx_reg(get_el3state_ctx(ctx),
+ CTX_ESR_EL3);
+ cpu_info->ErrCtxEl3Reg[2] = read_far_el3();
+ cpu_info->ErrCtxEl3Reg[4] = read_mair_el3();
+ cpu_info->ErrCtxEl3Reg[5] = read_sctlr_el3();
+ cpu_info->ErrCtxEl3Reg[6] = 0; /* sp_el3 */
+ cpu_info->ErrCtxEl3Reg[7] = read_tcr_el3();
+ cpu_info->ErrCtxEl3Reg[8] = read_tpidr_el3();
+ cpu_info->ErrCtxEl3Reg[9] = read_ttbr0_el3();
+}
+
+/* CPU RAS interrupt handler */
+int sgi_ras_cpu_intr_handler(const struct err_record_info *err_rec,
+ int probe_data,
+ const struct err_handler_data *const data)
+{
+ struct sgi_ras_ev_map *ras_map;
+ mm_communicate_header_t *header;
+ cpu_err_info cpu_info = {0};
+ uint64_t clear_status;
+ uint32_t intr;
+ int ret;
+
+ cm_el1_sysregs_context_save(NON_SECURE);
+ intr = data->interrupt;
+
+ INFO("[CPU RAS] CPU intr received = %d on cpu_id = %d\n",
+ intr, plat_my_core_pos());
+
+ INFO("[CPU RAS] ERXMISC0_EL1 = 0x%lx\n", read_erxmisc0_el1());
+ INFO("[CPU RAS] ERXSTATUS_EL1 = 0x%lx\n", read_erxstatus_el1());
+ INFO("[CPU RAS] ERXADDR_EL1 = 0x%lx\n", read_erxaddr_el1());
+
+ /* Populate CPU Error Source Information. */
+ populate_cpu_err_data(&cpu_info, get_interrupt_src_ss(data->flags));
+
+ /* Clear the interrupt. */
+ clear_status = read_erxstatus_el1();
+ write_erxstatus_el1(clear_status);
+ plat_ic_end_of_interrupt(intr);
+
+ header = (void *) PLAT_SPM_BUF_BASE;
+ memset(header, 0, sizeof(*header));
+ memcpy(&header->data, &cpu_info, sizeof(cpu_info));
+ header->message_len = sizeof(cpu_info);
+ memcpy(&header->header_guid, (void *) &cpu_ecc_event_guid,
+ sizeof(struct efi_guid));
+
+ spm_mm_sp_call(MM_COMMUNICATE_AARCH64, (uint64_t)header, 0,
+ plat_my_core_pos());
+
+ /*
+ * Find if this is a RAS interrupt. There must be an event against
+ * this interrupt
+ */
+ ras_map = sgi_find_ras_event_map_by_intr(intr);
+ if (ras_map == NULL) {
+ ERROR("SGI: RAS error info for interrupt id: %d not found\n",
+ intr);
+ return -1;
+ }
+
+ /* Dispatch the event to the SDEI client */
+ ret = sdei_dispatch_event(ras_map->sdei_ev_num);
+ if (ret != 0) {
+ /*
+ * sdei_dispatch_event() may return failing result in some
+ * cases, for example kernel may not have registered a handler
+ * or RAS event may happen early during boot. We restore the NS
+ * context when sdei_dispatch_event() returns failing result.
+ */
+ ERROR("SDEI dispatch failed: %d", ret);
+ cm_el1_sysregs_context_restore(NON_SECURE);
+ cm_set_next_eret_context(NON_SECURE);
+ }
+
+ return ret;
+}