diff options
| author | Ying-Chun Liu (PaulLiu) <[email protected]> | 2025-07-03 07:28:07 +0100 |
|---|---|---|
| committer | Ilias Apalodimas <[email protected]> | 2025-07-03 12:25:47 +0300 |
| commit | aaf7be96c2c14aa190d39e50fa3606389eafda8e (patch) | |
| tree | 5fdd5ee971be982aabad64e39b12d3de0d069dd4 /include | |
| parent | 46a564d689b61660919f11be332d47a206ed24d5 (diff) | |
efi: add EFI_SYSTEM_TABLE_POINTER for debug
Add EFI_SYSTEM_TABLE_POINTER structure for remote debugger to locate
the address of EFI_SYSTEM_TABLE.
This feature is described in UEFI SPEC version 2.10. Section 18.4.2.
The implementation ensures support for hardware-assisted debugging and
provides a standardized mechanism for debuggers to discover the EFI
system table.
Cc: Peter Robinson <[email protected]>
Cc: Simon Glass <[email protected]>
Signed-off-by: Ying-Chun Liu (PaulLiu) <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
Tested-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]> # change memset(systab_pointer, 0 ...) -> systab_pointer->crc32 = 0;
Signed-off-by: Ilias Apalodimas <[email protected]>
Diffstat (limited to 'include')
| -rw-r--r-- | include/efi_api.h | 16 | ||||
| -rw-r--r-- | include/efi_loader.h | 2 |
2 files changed, 18 insertions, 0 deletions
diff --git a/include/efi_api.h b/include/efi_api.h index eb61eafa028..6c4c1a0cc7b 100644 --- a/include/efi_api.h +++ b/include/efi_api.h @@ -259,6 +259,22 @@ struct efi_capsule_result_variable_header { efi_status_t capsule_status; } __packed; +/** + * struct efi_system_table_pointer - struct to store the pointer of system + * table. + * @signature: The signature of this struct. + * @efi_system_table_base: The physical address of System Table. + * @crc32: CRC32 checksum + * + * This struct is design for hardware debugger to search through memory to + * get the address of EFI System Table. + */ +struct efi_system_table_pointer { + u64 signature; + efi_physical_addr_t efi_system_table_base; + u32 crc32; +}; + struct efi_memory_range { efi_physical_addr_t address; u64 length; diff --git a/include/efi_loader.h b/include/efi_loader.h index 8fd09aad2d0..ada29a5bad3 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -643,6 +643,8 @@ efi_status_t efi_tcg2_measure_dtb(void *dtb); efi_status_t efi_root_node_register(void); /* Called by bootefi to initialize runtime */ efi_status_t efi_initialize_system_table(void); +/* Called by bootefi to initialize debug */ +efi_status_t efi_initialize_system_table_pointer(void); /* efi_runtime_detach() - detach unimplemented runtime functions */ void efi_runtime_detach(void); /* efi_convert_pointer() - convert pointer to virtual address */ |