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efi_loader: comments EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL
Provide missing comments for the functions implementing the EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt
parent
ca3ba71b9e
commit
325567d3c5
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@ -80,13 +80,13 @@ static int term_get_char(s32 *c)
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return 0;
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}
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/*
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/**
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* Receive and parse a reply from the terminal.
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*
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* @n: array of return values
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* @num: number of return values expected
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* @end_char: character indicating end of terminal message
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* @return: non-zero indicates error
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* Return: non-zero indicates error
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*/
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static int term_read_reply(int *n, int num, char end_char)
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{
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@ -127,6 +127,17 @@ static int term_read_reply(int *n, int num, char end_char)
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return 0;
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}
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/**
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* efi_cout_output_string() - write Unicode string to console
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*
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* This function implements the OutputString service of the simple text output
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* protocol. See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @this: simple text output protocol
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* @string: u16 string
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* Return: status code
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*/
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static efi_status_t EFIAPI efi_cout_output_string(
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struct efi_simple_text_output_protocol *this,
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const efi_string_t string)
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@ -202,6 +213,20 @@ out:
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return EFI_EXIT(ret);
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}
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/**
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* efi_cout_test_string() - test writing Unicode string to console
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*
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* This function implements the TestString service of the simple text output
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* protocol. See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* As in OutputString we simply convert UTF-16 to UTF-8 there are no unsupported
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* code points and we can always return EFI_SUCCESS.
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*
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* @this: simple text output protocol
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* @string: u16 string
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* Return: status code
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*/
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static efi_status_t EFIAPI efi_cout_test_string(
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struct efi_simple_text_output_protocol *this,
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const efi_string_t string)
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@ -210,6 +235,15 @@ static efi_status_t EFIAPI efi_cout_test_string(
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return EFI_EXIT(EFI_SUCCESS);
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}
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/**
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* cout_mode_matches() - check if mode has given terminal size
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*
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* @mode: text mode
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* @rows: number of rows
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* @cols: number of columns
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* Return: true if number of rows and columns matches the mode and
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* the mode is present
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*/
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static bool cout_mode_matches(struct cout_mode *mode, int rows, int cols)
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{
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if (!mode->present)
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@ -221,6 +255,9 @@ static bool cout_mode_matches(struct cout_mode *mode, int rows, int cols)
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/**
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* query_console_serial() - query console size
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*
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* When using a serial console or the net console we can only devise the
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* terminal size by querying the terminal using ECMA-48 control sequences.
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*
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* @rows: pointer to return number of rows
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* @cols: pointer to return number of columns
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* Returns: 0 on success
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@ -261,8 +298,8 @@ out:
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return ret;
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}
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/*
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* Update the mode table.
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/**
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* query_console_size() - update the mode table.
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*
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* By default the only mode available is 80x25. If the console has at least 50
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* lines, enable mode 80x50. If we can query the console size and it is neither
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@ -306,6 +343,20 @@ static void query_console_size(void)
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}
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}
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/**
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* efi_cout_query_mode() - get terminal size for a text mode
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*
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* This function implements the QueryMode service of the simple text output
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* protocol. See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @this: simple text output protocol
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* @mode_number: mode number to retrieve information on
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* @columns: number of columns
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* @rows: number of rows
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* Return: status code
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*/
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static efi_status_t EFIAPI efi_cout_query_mode(
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struct efi_simple_text_output_protocol *this,
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unsigned long mode_number, unsigned long *columns,
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@ -341,7 +392,17 @@ static const struct {
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{ 37, 47 }, /* 7: light gray, map to white */
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};
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/* See EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.SetAttribute(). */
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/**
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* efi_cout_set_attribute() - set fore- and background color
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*
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* This function implements the SetAttribute service of the simple text output
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* protocol. See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @this: simple text output protocol
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* @attribute: foreground color - bits 0-3, background color - bits 4-6
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* Return: status code
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*/
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static efi_status_t EFIAPI efi_cout_set_attribute(
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struct efi_simple_text_output_protocol *this,
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unsigned long attribute)
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@ -364,9 +425,9 @@ static efi_status_t EFIAPI efi_cout_set_attribute(
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/**
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* efi_cout_clear_screen() - clear screen
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*
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* This function implements the ClearScreen service of the
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* EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL. See the Unified Extensible Firmware
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* Interface (UEFI) specification for details.
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* This function implements the ClearScreen service of the simple text output
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* protocol. See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @this: pointer to the protocol instance
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* Return: status code
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@ -387,6 +448,17 @@ static efi_status_t EFIAPI efi_cout_clear_screen(
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return EFI_EXIT(EFI_SUCCESS);
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}
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/**
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* efi_cout_clear_set_mode() - set text model
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*
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* This function implements the SetMode service of the simple text output
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* protocol. See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @this: pointer to the protocol instance
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* @mode_number: number of the text mode to set
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* Return: status code
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*/
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static efi_status_t EFIAPI efi_cout_set_mode(
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struct efi_simple_text_output_protocol *this,
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unsigned long mode_number)
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@ -405,6 +477,17 @@ static efi_status_t EFIAPI efi_cout_set_mode(
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return EFI_EXIT(EFI_SUCCESS);
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}
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/**
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* efi_cout_reset() - reset the terminal
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*
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* This function implements the Reset service of the simple text output
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* protocol. See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @this: pointer to the protocol instance
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* @extended_verification: if set an extended verification may be executed
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* Return: status code
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*/
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static efi_status_t EFIAPI efi_cout_reset(
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struct efi_simple_text_output_protocol *this,
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char extended_verification)
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@ -420,6 +503,18 @@ static efi_status_t EFIAPI efi_cout_reset(
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return EFI_EXIT(EFI_SUCCESS);
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}
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/**
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* efi_cout_set_cursor_position() - reset the terminal
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*
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* This function implements the SetCursorPosition service of the simple text
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* output protocol. See the Unified Extensible Firmware Interface (UEFI)
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* specification for details.
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*
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* @this: pointer to the protocol instance
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* @column: column to move to
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* @row: row to move to
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* Return: status code
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*/
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static efi_status_t EFIAPI efi_cout_set_cursor_position(
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struct efi_simple_text_output_protocol *this,
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unsigned long column, unsigned long row)
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@ -451,6 +546,17 @@ out:
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return EFI_EXIT(ret);
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}
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/**
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* efi_cout_enable_cursor() - enable the cursor
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*
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* This function implements the EnableCursor service of the simple text output
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* protocol. See the Unified Extensible Firmware Interface (UEFI) specification
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* for details.
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*
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* @this: pointer to the protocol instance
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* @enable: if true enable, if false disable the cursor
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* Return: status code
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*/
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static efi_status_t EFIAPI efi_cout_enable_cursor(
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struct efi_simple_text_output_protocol *this,
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bool enable)
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@ -522,7 +628,7 @@ void set_shift_mask(int mod, struct efi_key_state *key_state)
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* This gets called when we have already parsed CSI.
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*
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* @key_state: receives the state of the shift, alt, control, and logo keys
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* @return: the unmodified code
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* Return: the unmodified code
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*/
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static int analyze_modifiers(struct efi_key_state *key_state)
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{
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