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CPER stands for Common Platform Error Record, it is the hardware error record format used to describe platform hardware error by various APEI tables, such as ERST, BERT and HEST etc. For more information about CPER, please refer to Appendix N of UEFI Specification version 2.3. This patch mainly includes the data structure difinition header file used by other files. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/*
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* UEFI Common Platform Error Record (CPER) support
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*
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* Copyright (C) 2010, Intel Corp.
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* Author: Huang Ying <ying.huang@intel.com>
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*
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* CPER is the format used to describe platform hardware error by
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* various APEI tables, such as ERST, BERT and HEST etc.
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*
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* For more information about CPER, please refer to Appendix N of UEFI
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* Specification version 2.3.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/time.h>
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#include <linux/cper.h>
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#include <linux/acpi.h>
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/*
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* CPER record ID need to be unique even after reboot, because record
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* ID is used as index for ERST storage, while CPER records from
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* multiple boot may co-exist in ERST.
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*/
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u64 cper_next_record_id(void)
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{
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static atomic64_t seq;
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if (!atomic64_read(&seq))
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atomic64_set(&seq, ((u64)get_seconds()) << 32);
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return atomic64_inc_return(&seq);
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}
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EXPORT_SYMBOL_GPL(cper_next_record_id);
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int apei_estatus_check_header(const struct acpi_hest_generic_status *estatus)
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{
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if (estatus->data_length &&
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estatus->data_length < sizeof(struct acpi_hest_generic_data))
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return -EINVAL;
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if (estatus->raw_data_length &&
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estatus->raw_data_offset < sizeof(*estatus) + estatus->data_length)
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return -EINVAL;
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return 0;
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}
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EXPORT_SYMBOL_GPL(apei_estatus_check_header);
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int apei_estatus_check(const struct acpi_hest_generic_status *estatus)
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{
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struct acpi_hest_generic_data *gdata;
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unsigned int data_len, gedata_len;
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int rc;
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rc = apei_estatus_check_header(estatus);
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if (rc)
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return rc;
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data_len = estatus->data_length;
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gdata = (struct acpi_hest_generic_data *)(estatus + 1);
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while (data_len > sizeof(*gdata)) {
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gedata_len = gdata->error_data_length;
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if (gedata_len > data_len - sizeof(*gdata))
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return -EINVAL;
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data_len -= gedata_len + sizeof(*gdata);
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}
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if (data_len)
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return -EINVAL;
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return 0;
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}
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EXPORT_SYMBOL_GPL(apei_estatus_check);
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