diff options
Diffstat (limited to 'drivers/firmware/efi/cper-arm.c')
| -rw-r--r-- | drivers/firmware/efi/cper-arm.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/drivers/firmware/efi/cper-arm.c b/drivers/firmware/efi/cper-arm.c new file mode 100644 index 000000000000..4afbfed52163 --- /dev/null +++ b/drivers/firmware/efi/cper-arm.c @@ -0,0 +1,147 @@ +/* + * UEFI Common Platform Error Record (CPER) support + * + * Copyright (C) 2017, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/time.h> +#include <linux/cper.h> +#include <linux/dmi.h> +#include <linux/acpi.h> +#include <linux/pci.h> +#include <linux/aer.h> +#include <linux/printk.h> +#include <linux/bcd.h> +#include <acpi/ghes.h> +#include <ras/ras_event.h> + +#define INDENT_SP " " + +static const char * const arm_reg_ctx_strs[] = { + "AArch32 general purpose registers", + "AArch32 EL1 context registers", + "AArch32 EL2 context registers", + "AArch32 secure context registers", + "AArch64 general purpose registers", + "AArch64 EL1 context registers", + "AArch64 EL2 context registers", + "AArch64 EL3 context registers", + "Misc. system register structure", +}; + +void cper_print_proc_arm(const char *pfx, + const struct cper_sec_proc_arm *proc) +{ + int i, len, max_ctx_type; + struct cper_arm_err_info *err_info; + struct cper_arm_ctx_info *ctx_info; + char newpfx[64]; + + printk("%sMIDR: 0x%016llx\n", pfx, proc->midr); + + len = proc->section_length - (sizeof(*proc) + + proc->err_info_num * (sizeof(*err_info))); + if (len < 0) { + printk("%ssection length: %d\n", pfx, proc->section_length); + printk("%ssection length is too small\n", pfx); + printk("%sfirmware-generated error record is incorrect\n", pfx); + printk("%sERR_INFO_NUM is %d\n", pfx, proc->err_info_num); + return; + } + + if (proc->validation_bits & CPER_ARM_VALID_MPIDR) + printk("%sMultiprocessor Affinity Register (MPIDR): 0x%016llx\n", + pfx, proc->mpidr); + + if (proc->validation_bits & CPER_ARM_VALID_AFFINITY_LEVEL) + printk("%serror affinity level: %d\n", pfx, + proc->affinity_level); + + if (proc->validation_bits & CPER_ARM_VALID_RUNNING_STATE) { + printk("%srunning state: 0x%x\n", pfx, proc->running_state); + printk("%sPower State Coordination Interface state: %d\n", + pfx, proc->psci_state); + } + + snprintf(newpfx, sizeof(newpfx), "%s%s", pfx, INDENT_SP); + + err_info = (struct cper_arm_err_info *)(proc + 1); + for (i = 0; i < proc->err_info_num; i++) { + printk("%sError info structure %d:\n", pfx, i); + + printk("%snum errors: %d\n", pfx, err_info->multiple_error + 1); + + if (err_info->validation_bits & CPER_ARM_INFO_VALID_FLAGS) { + if (err_info->flags & CPER_ARM_INFO_FLAGS_FIRST) + printk("%sfirst error captured\n", newpfx); + if (err_info->flags & CPER_ARM_INFO_FLAGS_LAST) + printk("%slast error captured\n", newpfx); + if (err_info->flags & CPER_ARM_INFO_FLAGS_PROPAGATED) + printk("%spropagated error captured\n", + newpfx); + if (err_info->flags & CPER_ARM_INFO_FLAGS_OVERFLOW) + printk("%soverflow occurred, error info is incomplete\n", + newpfx); + } + + printk("%serror_type: %d, %s\n", newpfx, err_info->type, + err_info->type < ARRAY_SIZE(cper_proc_error_type_strs) ? + cper_proc_error_type_strs[err_info->type] : "unknown"); + if (err_info->validation_bits & CPER_ARM_INFO_VALID_ERR_INFO) + printk("%serror_info: 0x%016llx\n", newpfx, + err_info->error_info); + if (err_info->validation_bits & CPER_ARM_INFO_VALID_VIRT_ADDR) + printk("%svirtual fault address: 0x%016llx\n", + newpfx, err_info->virt_fault_addr); + if (err_info->validation_bits & CPER_ARM_INFO_VALID_PHYSICAL_ADDR) + printk("%sphysical fault address: 0x%016llx\n", + newpfx, err_info->physical_fault_addr); + err_info += 1; + } + + ctx_info = (struct cper_arm_ctx_info *)err_info; + max_ctx_type = ARRAY_SIZE(arm_reg_ctx_strs) - 1; + for (i = 0; i < proc->context_info_num; i++) { + int size = sizeof(*ctx_info) + ctx_info->size; + + printk("%sContext info structure %d:\n", pfx, i); + if (len < size) { + printk("%ssection length is too small\n", newpfx); + printk("%sfirmware-generated error record is incorrect\n", pfx); + return; + } + if (ctx_info->type > max_ctx_type) { + printk("%sInvalid context type: %d (max: %d)\n", + newpfx, ctx_info->type, max_ctx_type); + return; + } + printk("%sregister context type: %s\n", newpfx, + arm_reg_ctx_strs[ctx_info->type]); + print_hex_dump(newpfx, "", DUMP_PREFIX_OFFSET, 16, 4, + (ctx_info + 1), ctx_info->size, 0); + len -= size; + ctx_info = (struct cper_arm_ctx_info *)((long)ctx_info + size); + } + + if (len > 0) { + printk("%sVendor specific error info has %u bytes:\n", pfx, + len); + print_hex_dump(newpfx, "", DUMP_PREFIX_OFFSET, 16, 4, ctx_info, + len, true); + } +} |