On Thu, 27 Feb 2025 12:03:36 +0100 Mauro Carvalho Chehab <[email protected]> wrote:
> Store HEST table address at GPA, placing its the start of the table at > hest_addr_le variable. > > Signed-off-by: Mauro Carvalho Chehab <[email protected]> > Reviewed-by: Jonathan Cameron <[email protected]> > Reviewed-by: Igor Mammedov <[email protected]> > --- > hw/acpi/ghes.c | 20 +++++++++++++++++++- > include/hw/acpi/ghes.h | 7 ++++++- > 2 files changed, 25 insertions(+), 2 deletions(-) > > diff --git a/hw/acpi/ghes.c b/hw/acpi/ghes.c > index 9243b5ad4acb..8ec423726b3f 100644 > --- a/hw/acpi/ghes.c > +++ b/hw/acpi/ghes.c > @@ -30,6 +30,7 @@ > > #define ACPI_HW_ERROR_FW_CFG_FILE "etc/hardware_errors" > #define ACPI_HW_ERROR_ADDR_FW_CFG_FILE "etc/hardware_errors_addr" > +#define ACPI_HEST_ADDR_FW_CFG_FILE "etc/acpi_table_hest_addr" > > /* The max size in bytes for one error block */ > #define ACPI_GHES_MAX_RAW_DATA_LENGTH (1 * KiB) > @@ -341,6 +342,9 @@ void acpi_build_hest(AcpiGhesState *ags, GArray > *table_data, > { > AcpiTable table = { .sig = "HEST", .rev = 1, > .oem_id = oem_id, .oem_table_id = oem_table_id }; > + uint32_t hest_offset; > + > + hest_offset = table_data->len; > > build_ghes_error_table(ags, hardware_errors, linker); > > @@ -352,6 +356,17 @@ void acpi_build_hest(AcpiGhesState *ags, GArray > *table_data, > ACPI_GHES_NOTIFY_SEA, ACPI_HEST_SRC_ID_SEA); > > acpi_table_end(linker, &table); > + > + if (ags->use_hest_addr) { > + /* > + * Tell firmware to write into GPA the address of HEST via fw_cfg, > + * once initialized. > + */ > + bios_linker_loader_write_pointer(linker, > + ACPI_HEST_ADDR_FW_CFG_FILE, 0, > + sizeof(uint64_t), > + ACPI_BUILD_TABLE_FILE, hest_offset); > + } > } > > void acpi_ghes_add_fw_cfg(AcpiGhesState *ags, FWCfgState *s, > @@ -361,7 +376,10 @@ void acpi_ghes_add_fw_cfg(AcpiGhesState *ags, FWCfgState > *s, > fw_cfg_add_file(s, ACPI_HW_ERROR_FW_CFG_FILE, hardware_error->data, > hardware_error->len); > > - if (!ags->use_hest_addr) { > + if (ags->use_hest_addr) { > + fw_cfg_add_file_callback(s, ACPI_HEST_ADDR_FW_CFG_FILE, NULL, NULL, > + NULL, &(ags->hest_addr_le), sizeof(ags->hest_addr_le), false); > + } else { > /* Create a read-write fw_cfg file for Address */ > fw_cfg_add_file_callback(s, ACPI_HW_ERROR_ADDR_FW_CFG_FILE, NULL, > NULL, > NULL, &(ags->hw_error_le), sizeof(ags->hw_error_le), false); > diff --git a/include/hw/acpi/ghes.h b/include/hw/acpi/ghes.h > index 5000891f163f..38abe6e3db52 100644 > --- a/include/hw/acpi/ghes.h > +++ b/include/hw/acpi/ghes.h > @@ -70,9 +70,14 @@ enum { > * When use_hest_addr is false, the GPA of the etc/hardware_errors firmware > * is stored at hw_error_le. This is the default on QEMU 9.x. > * > - * An GPA value equal to zero means that GHES is not present. > + * When use_hest_addr is true, the stored offset is placed at hest_addr_le, ^^^^^ it's not offset, it's GPA please get rid of offset language in this comment. > + * meaning an offset from the HEST table address from etc/acpi/tables > firmware. > + * This is the default for QEMU 10.x and above. > + * > + * Whe both GPA values are equal to zero means that GHES is not present. > */ > typedef struct AcpiGhesState { > + uint64_t hest_addr_le; > uint64_t hw_error_le; > bool use_hest_addr; /* Currently, always false */ > } AcpiGhesState;
