From patchwork Mon Apr 27 09:48:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AKASHI Takahiro X-Patchwork-Id: 238586 List-Id: U-Boot discussion From: takahiro.akashi at linaro.org (AKASHI Takahiro) Date: Mon, 27 Apr 2020 18:48:20 +0900 Subject: [PATCH 01/10] efi_loader: disk: add efi_disk_is_system_part() In-Reply-To: <20200427094829.1140-1-takahiro.akashi@linaro.org> References: <20200427094829.1140-1-takahiro.akashi@linaro.org> Message-ID: <20200427094829.1140-2-takahiro.akashi@linaro.org> This function will check if a given handle to device is a EFI system partition. It will be utilised in implementing capsule-on-disk feature. Signed-off-by: AKASHI Takahiro --- include/efi_loader.h | 2 ++ lib/efi_loader/efi_disk.c | 22 ++++++++++++++++++++++ 2 files changed, 24 insertions(+) diff --git a/include/efi_loader.h b/include/efi_loader.h index b7bccf50b30c..d4510462d616 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -393,6 +393,8 @@ efi_status_t efi_disk_register(void); int efi_disk_create_partitions(efi_handle_t parent, struct blk_desc *desc, const char *if_typename, int diskid, const char *pdevname); +/* Check if it is EFI system partition */ +bool efi_disk_is_system_part(efi_handle_t handle); /* Called by bootefi to make GOP (graphical) interface available */ efi_status_t efi_gop_register(void); /* Called by bootefi to make the network interface available */ diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c index fd3df80b0b96..9f58a8642c85 100644 --- a/lib/efi_loader/efi_disk.c +++ b/lib/efi_loader/efi_disk.c @@ -588,3 +588,25 @@ efi_status_t efi_disk_register(void) return EFI_SUCCESS; } + +bool efi_disk_is_system_part(efi_handle_t handle) +{ + struct efi_handler *handler; + struct efi_disk_obj *diskobj; + disk_partition_t info; + efi_status_t ret; + int r; + + /* check if this is a block device */ + ret = efi_search_protocol(handle, &efi_block_io_guid, &handler); + if (ret != EFI_SUCCESS) + return false; + + diskobj = container_of(handle, struct efi_disk_obj, header); + + r = part_get_info(diskobj->desc, diskobj->part, &info); + if (r) + return false; + + return info.bootable & PART_EFI_SYSTEM_PARTITION; +}