From f027222ad8c7488bab6f4e5b6ab77104081842c6 Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Fri, 19 Mar 2021 02:49:54 +0100 Subject: efi_loader: Uart device path When uploading an EFI binary via the UART we need to assign a device path. * Provide devicepath node to text conversion for Uart() node. * Provide function to create Uart() device path. * Add UART support to efi_dp_from_name(). Signed-off-by: Heinrich Schuchardt --- include/efi_api.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/efi_api.h') diff --git a/include/efi_api.h b/include/efi_api.h index 48e48a6263..4ccde1d24d 100644 --- a/include/efi_api.h +++ b/include/efi_api.h @@ -523,6 +523,7 @@ struct efi_device_path_acpi_path { # define DEVICE_PATH_SUB_TYPE_MSG_SCSI 0x02 # define DEVICE_PATH_SUB_TYPE_MSG_USB 0x05 # define DEVICE_PATH_SUB_TYPE_MSG_MAC_ADDR 0x0b +# define DEVICE_PATH_SUB_TYPE_MSG_UART 0x0e # define DEVICE_PATH_SUB_TYPE_MSG_USB_CLASS 0x0f # define DEVICE_PATH_SUB_TYPE_MSG_SATA 0x12 # define DEVICE_PATH_SUB_TYPE_MSG_NVME 0x17 @@ -542,6 +543,15 @@ struct efi_device_path_scsi { u16 logical_unit_number; } __packed; +struct efi_device_path_uart { + struct efi_device_path dp; + u32 reserved; + u64 baud_rate; + u8 data_bits; + u8 parity; + u8 stop_bits; +} __packed; + struct efi_device_path_usb { struct efi_device_path dp; u8 parent_port_number; -- cgit v1.2.3