This patch builds error_block_address and read_ack_register fields
in hardware errors table , the error_block_address points to Generic
Error Status Block(GESB) via bios_linker. The max size for one GESB
is 1kb in bytes, For more detailed information, please refer to
document: docs/specs/acpi_hest_ghes.rst
Now we only support one Error source, if necessary, we can extend to
support more.
Suggested-by: Laszlo Ersek <lersek@xxxxxxxxxx>
Signed-off-by: Dongjiu Geng <gengdongjiu@xxxxxxxxxx>
Signed-off-by: Xiang Zheng <zhengxiang9@xxxxxxxxxx>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
---
default-configs/arm-softmmu.mak | 1 +
hw/acpi/Kconfig | 4 ++
hw/acpi/Makefile.objs | 1 +
hw/acpi/aml-build.c | 2 +
hw/acpi/ghes.c | 89 +++++++++++++++++++++++++++++++++++++++++
hw/arm/virt-acpi-build.c | 6 +++
include/hw/acpi/aml-build.h | 1 +
include/hw/acpi/ghes.h | 28 +++++++++++++
8 files changed, 132 insertions(+)
create mode 100644 hw/acpi/ghes.c
create mode 100644 include/hw/acpi/ghes.h
diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak
index 645e620..7648be0 100644
--- a/default-configs/arm-softmmu.mak
+++ b/default-configs/arm-softmmu.mak
@@ -41,3 +41,4 @@ CONFIG_FSL_IMX25=y
CONFIG_FSL_IMX7=y
CONFIG_FSL_IMX6UL=y
CONFIG_SEMIHOSTING=y
+CONFIG_ACPI_APEI=y
diff --git a/hw/acpi/Kconfig b/hw/acpi/Kconfig
index 54209c6..1932f66 100644
--- a/hw/acpi/Kconfig
+++ b/hw/acpi/Kconfig
@@ -28,6 +28,10 @@ config ACPI_HMAT
bool
depends on ACPI
+config ACPI_APEI
+ bool
+ depends on ACPI
+
config ACPI_PCI
bool
depends on ACPI && PCI
diff --git a/hw/acpi/Makefile.objs b/hw/acpi/Makefile.objs
index 777da07..28c5ddb 100644
--- a/hw/acpi/Makefile.objs
+++ b/hw/acpi/Makefile.objs
@@ -8,6 +8,7 @@ common-obj-$(CONFIG_ACPI_NVDIMM) += nvdimm.o
common-obj-$(CONFIG_ACPI_VMGENID) += vmgenid.o
common-obj-$(CONFIG_ACPI_HW_REDUCED) += generic_event_device.o
common-obj-$(CONFIG_ACPI_HMAT) += hmat.o
+common-obj-$(CONFIG_ACPI_APEI) += ghes.o
common-obj-$(call lnot,$(CONFIG_ACPI_X86)) += acpi-stub.o
common-obj-$(call lnot,$(CONFIG_PC)) += acpi-x86-stub.o
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 2c3702b..3681ec6 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -1578,6 +1578,7 @@ void acpi_build_tables_init(AcpiBuildTables *tables)
tables->table_data = g_array_new(false, true /* clear */, 1);
tables->tcpalog = g_array_new(false, true /* clear */, 1);
tables->vmgenid = g_array_new(false, true /* clear */, 1);
+ tables->hardware_errors = g_array_new(false, true /* clear */, 1);
tables->linker = bios_linker_loader_init();
}
@@ -1588,6 +1589,7 @@ void acpi_build_tables_cleanup(AcpiBuildTables *tables, bool mfre)
g_array_free(tables->table_data, true);
g_array_free(tables->tcpalog, mfre);
g_array_free(tables->vmgenid, mfre);
+ g_array_free(tables->hardware_errors, mfre);
}
/*
diff --git a/hw/acpi/ghes.c b/hw/acpi/ghes.c
new file mode 100644
index 0000000..e1b3f8f
--- /dev/null
+++ b/hw/acpi/ghes.c
@@ -0,0 +1,89 @@
+/*
+ * Support for generating APEI tables and recording CPER for Guests
+ *
+ * Copyright (c) 2020 HUAWEI TECHNOLOGIES CO., LTD.
+ *
+ * Author: Dongjiu Geng <gengdongjiu@xxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/units.h"
+#include "hw/acpi/ghes.h"
+#include "hw/acpi/aml-build.h"
+
+#define ACPI_GHES_ERRORS_FW_CFG_FILE "etc/hardware_errors"
+#define ACPI_GHES_DATA_ADDR_FW_CFG_FILE "etc/hardware_errors_addr"
+
+/* The max size in bytes for one error block */
+#define ACPI_GHES_MAX_RAW_DATA_LENGTH (1 * KiB)
+
+/* Now only support ARMv8 SEA notification type error source */
+#define ACPI_GHES_ERROR_SOURCE_COUNT 1
+
+/*
+ * Build table for the hardware error fw_cfg blob.
+ * Initialize "etc/hardware_errors" and "etc/hardware_errors_addr" fw_cfg blobs.
+ * See docs/specs/acpi_hest_ghes.rst for blobs format.
+ */
+void build_ghes_error_table(GArray *hardware_errors, BIOSLinker *linker)
+{
+ int i, error_status_block_offset;
+
+ /* Build error_block_address */
+ for (i = 0; i < ACPI_GHES_ERROR_SOURCE_COUNT; i++) {
+ build_append_int_noprefix(hardware_errors, 0, sizeof(uint64_t));
+ }
+
+ /* Build read_ack_register */
+ for (i = 0; i < ACPI_GHES_ERROR_SOURCE_COUNT; i++) {
+ /*
+ * Initialize the value of read_ack_register to 1, so GHES can be
+ * writeable after (re)boot.
+ * ACPI 6.2: 18.3.2.8 Generic Hardware Error Source version 2
+ * (GHESv2 - Type 10)
+ */
+ build_append_int_noprefix(hardware_errors, 1, sizeof(uint64_t));
+ }
+
+ /* Generic Error Status Block offset in the hardware error fw_cfg blob */
+ error_status_block_offset = hardware_errors->len;
+
+ /* Reserve space for Error Status Data Block */
+ acpi_data_push(hardware_errors,
+ ACPI_GHES_MAX_RAW_DATA_LENGTH * ACPI_GHES_ERROR_SOURCE_COUNT);
+
+ /* Tell guest firmware to place hardware_errors blob into RAM */
+ bios_linker_loader_alloc(linker, ACPI_GHES_ERRORS_FW_CFG_FILE,
+ hardware_errors, sizeof(uint64_t), false);
+
+ for (i = 0; i < ACPI_GHES_ERROR_SOURCE_COUNT; i++) {
+ /*
+ * Tell firmware to patch error_block_address entries to point to
+ * corresponding "Generic Error Status Block"
+ */
+ bios_linker_loader_add_pointer(linker,
+ ACPI_GHES_ERRORS_FW_CFG_FILE, sizeof(uint64_t) * i,
+ sizeof(uint64_t), ACPI_GHES_ERRORS_FW_CFG_FILE,
+ error_status_block_offset + i * ACPI_GHES_MAX_RAW_DATA_LENGTH);
+ }
+
+ /*
+ * tell firmware to write hardware_errors GPA into
+ * hardware_errors_addr fw_cfg, once the former has been initialized.
+ */
+ bios_linker_loader_write_pointer(linker, ACPI_GHES_DATA_ADDR_FW_CFG_FILE,
+ 0, sizeof(uint64_t), ACPI_GHES_ERRORS_FW_CFG_FILE, 0);
+}
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index bd5f771..6819fcf 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -48,6 +48,7 @@
#include "sysemu/reset.h"
#include "kvm_arm.h"
#include "migration/vmstate.h"
+#include "hw/acpi/ghes.h"
#define ARM_SPI_BASE 32
@@ -830,6 +831,11 @@ void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables)
acpi_add_table(table_offsets, tables_blob);
build_spcr(tables_blob, tables->linker, vms);
+ if (vms->ras) {
+ acpi_add_table(table_offsets, tables_blob);
+ build_ghes_error_table(tables->hardware_errors, tables->linker);
+ }
+
if (ms->numa_state->num_nodes > 0) {
acpi_add_table(table_offsets, tables_blob);
build_srat(tables_blob, tables->linker, vms);
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index de4a406..8f13620 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -220,6 +220,7 @@ struct AcpiBuildTables {
GArray *rsdp;
GArray *tcpalog;
GArray *vmgenid;
+ GArray *hardware_errors;
BIOSLinker *linker;
} AcpiBuildTables;
diff --git a/include/hw/acpi/ghes.h b/include/hw/acpi/ghes.h
new file mode 100644
index 0000000..50379b0
--- /dev/null
+++ b/include/hw/acpi/ghes.h
@@ -0,0 +1,28 @@
+/*
+ * Support for generating APEI tables and recording CPER for Guests
+ *
+ * Copyright (c) 2020 HUAWEI TECHNOLOGIES CO., LTD.
+ *
+ * Author: Dongjiu Geng <gengdongjiu@xxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ACPI_GHES_H
+#define ACPI_GHES_H
+
+#include "hw/acpi/bios-linker-loader.h"
+
+void build_ghes_error_table(GArray *hardware_errors, BIOSLinker *linker);
+#endif
--
1.8.3.1
