From 613cd0c46796cae340382679bc01ef220daf3768 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 29 Dec 2021 11:57:36 -0700 Subject: efi: Locate all block devices in the app When starting the app, locate all block devices and make them available to U-Boot. This allows listing partitions and accessing files in filesystems. EFI also has the concept of 'disks', meaning boot media. For now, this is not obviously useful in U-Boot, but add code to at least locate these. This can be expanded later as needed. We cannot use printf() in the early stub or app since it is not compiled in Signed-off-by: Simon Glass Reviewed-by: Heinrich Schuchardt --- include/efi_api.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/efi_api.h') diff --git a/include/efi_api.h b/include/efi_api.h index 80109f012bc..ec9fa89a935 100644 --- a/include/efi_api.h +++ b/include/efi_api.h @@ -2035,4 +2035,19 @@ struct efi_firmware_management_protocol { const u16 *package_version_name); }; +#define EFI_DISK_IO_PROTOCOL_GUID \ + EFI_GUID(0xce345171, 0xba0b, 0x11d2, 0x8e, 0x4f, \ + 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) + +struct efi_disk { + u64 revision; + efi_status_t (EFIAPI *read_disk)(struct efi_disk *this, u32 media_id, + u64 offset, efi_uintn_t buffer_size, + void *buffer); + + efi_status_t (EFIAPI *write_disk)(struct efi_disk *this, u32 media_id, + u64 offset, efi_uintn_t buffer_size, + void *buffer); +}; + #endif -- cgit