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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2023 Karel Gardas
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <bsp.h>
#include <efi.h>
#include <rtems/bspIo.h>
#include <stdio.h>
#include <string.h>
#include <efistop.h>
#include <efigop.h>
#include <multiboot2impl.h>
#ifdef BSP_USE_EFI_BOOT_SERVICES
extern EFI_HANDLE IH;
extern EFI_SYSTEM_TABLE *ST;
extern EFI_BOOT_SERVICES *BS;
extern EFI_RUNTIME_SERVICES *RS;
extern void uart0_output_char(char c);
static bool is_efi_console_initialized = false;
static char output_buffer[4096];
static int output_buffer_index = 0;
void
efi_console_initialize(void);
EFI_STATUS
print_gop_info(EFI_GRAPHICS_OUTPUT *gop);
EFI_STATUS
check_gop(BOOLEAN verbose);
static void
both_output_char(char c);
static void
sync_output(void);
void
print_ccm_info(EFI_CONSOLE_CONTROL_SCREEN_MODE, BOOLEAN, BOOLEAN);
void
print_ccm_info(EFI_CONSOLE_CONTROL_SCREEN_MODE mode, BOOLEAN graphics, BOOLEAN locked)
{
printf("RTEMS: EFI console default mode: ");
switch (mode) {
case EfiConsoleControlScreenText:
printf("text");
break;
case EfiConsoleControlScreenGraphics:
printf("graphics");
break;
case EfiConsoleControlScreenMaxValue:
printf("max value");
break;
}
if (graphics) {
printf(", graphics is available");
}
if (locked) {
printf(", stdin is locked");
}
printf("\n");
}
void
efi_console_initialize( void )
{
EFI_STATUS status;
EFI_GUID ConsoleControlGUID = EFI_CONSOLE_CONTROL_PROTOCOL_GUID;
EFI_CONSOLE_CONTROL_PROTOCOL *ConsoleControl = NULL;
EFI_HANDLE *HandleBuffer = NULL;
UINTN HandleCount = 0;
BOOLEAN graphics_exists;
BOOLEAN locked_stdin;
EFI_CONSOLE_CONTROL_SCREEN_MODE mode;
BOOLEAN use_text = false;
BOOLEAN use_graphic = false;
BOOLEAN use_auto = false;
int text_mode = -1;
int graphic_mode = -1;
if (is_efi_console_initialized)
return;
if (ST == NULL)
return;
/* try hard to obtain console control */
status = ST->BootServices->LocateProtocol(&ConsoleControlGUID, NULL,
(VOID **)&ConsoleControl);
if (EFI_ERROR(status)) {
status = ST->BootServices->HandleProtocol( ST->ConsoleOutHandle,
&ConsoleControlGUID,
(VOID **)&ConsoleControl);
if (EFI_ERROR(status)) {
status = ST->BootServices->LocateHandleBuffer( ByProtocol,
&ConsoleControlGUID,
NULL,
&HandleCount,
&HandleBuffer);
if (status == EFI_SUCCESS) {
for (int i = 0; i < HandleCount; i++) {
status = ST->BootServices->HandleProtocol( HandleBuffer[i],
&ConsoleControlGUID,
(VOID*)&ConsoleControl);
if (!EFI_ERROR (status)) {
break;
}
}
ST->BootServices->FreePool(HandleBuffer);
}
}
}
if (strcmp(BSP_EFI_CONSOLE_KIND, "TEXT") == 0) {
use_text = true;
}
if (strcmp(BSP_EFI_CONSOLE_KIND, "GRAPHIC") == 0) {
use_graphic = true;
}
if (strcmp(BSP_EFI_CONSOLE_KIND, "BOTH") == 0) {
use_text = true;
use_graphic = true;
}
if (strcmp(BSP_EFI_CONSOLE_KIND, "AUTO") == 0) {
use_auto = true;
}
if (ConsoleControl != NULL) {
status = ConsoleControl->GetMode(ConsoleControl, &mode, &graphics_exists, &locked_stdin);
if (!EFI_ERROR(status)) {
print_ccm_info(mode, graphics_exists, locked_stdin);
if (mode == EfiConsoleControlScreenText && use_auto) {
use_text = true;
}
if (mode == EfiConsoleControlScreenGraphics && use_auto) {
use_graphic = true;
}
}
else {
/* in case of error from console control, let's use both outputs */
use_text = true;
use_graphic = true;
}
}
else {
/* in case of missing console control, let's use both outputs */
use_text = true;
use_graphic = true;
}
if (get_boot_arg_int_value(boot_args(), "text_mode", &text_mode) == 0
|| get_boot_arg_int_value(boot_args(), "graphic_mode", &graphic_mode) == 0) {
/* if there is any command-line arg passed to manage console, we give it max
priority which means we reset any value set so far. */
use_text = false;
use_graphic = false;
}
if (get_boot_arg_int_value(boot_args(), "text_mode", &text_mode) == 0) {
use_text = true;
}
if (get_boot_arg_int_value(boot_args(), "graphic_mode", &graphic_mode) == 0) {
use_graphic = true;
}
if (use_text)
efi_init_text_output(text_mode);
if (use_graphic) {
efi_init_graphic_output(graphic_mode);
}
if (use_text && use_graphic) {
BSP_output_char = both_output_char;
}
else if (use_text) {
BSP_output_char = efi_text_output_char;
}
else if (use_graphic) {
BSP_output_char = efi_graphic_output_char;
}
sync_output();
is_efi_console_initialized = true;
}
void
buffered_output( char c );
void
buffered_output( char c )
{
if (output_buffer_index < (4096 - 1)) {
output_buffer[output_buffer_index] = c;
output_buffer_index++;
}
}
static void
both_output_char( char c )
{
efi_text_output_char(c);
efi_graphic_output_char(c);
}
void
sync_output()
{
printf("EFI: console sync_output(): there are %d characters in the buffer.\n", output_buffer_index);
for (int i = 0; i < output_buffer_index; i++) {
BSP_output_char(output_buffer[i]);
}
printf("EFI: console sync_output() done.\n");
}
#if (BSP_EFI_EARLY_CONSOLE_KIND == BUFFER)
BSP_output_char_function_type BSP_output_char = buffered_output;
#elif (BSP_EFI_EARLY_CONSOLE_KIND == SERIAL)
BSP_output_char_function_type BSP_output_char = uart0_output_char;
#endif
BSP_polling_getchar_function_type BSP_poll_char = NULL;
#endif
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