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limine/common/menu.c

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#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
#include <stdnoreturn.h>
#include <config.h>
#include <menu.h>
#include <lib/print.h>
#include <lib/misc.h>
#include <lib/libc.h>
#include <lib/config.h>
#include <lib/term.h>
#include <lib/gterm.h>
#include <lib/readline.h>
#include <lib/uri.h>
#include <mm/pmm.h>
#include <drivers/vbe.h>
#include <drivers/vga_textmode.h>
#include <console.h>
#include <protos/linux.h>
#include <protos/chainload.h>
#include <protos/chainload_next.h>
#include <protos/multiboot1.h>
#include <protos/multiboot2.h>
#include <protos/limine.h>
static char *menu_branding = NULL;
static char *menu_branding_colour = NULL;
#define EDITOR_MAX_BUFFER_SIZE 4096
#define TOK_KEY 0
#define TOK_EQUALS 1
#define TOK_VALUE 2
#define TOK_BADKEY 3
#define TOK_COMMENT 4
static size_t get_line_offset(size_t *displacement, size_t index, const char *buffer) {
size_t offset = 0;
size_t _index = index;
for (size_t i = 0; buffer[i]; i++) {
if (!_index--)
break;
if (buffer[i] == '\n')
offset = i + 1;
}
if (displacement)
*displacement = index - offset;
return offset;
}
static size_t get_line_length(size_t index, const char *buffer) {
size_t i;
for (i = index; buffer[i] != '\n' && buffer[i] != 0; i++);
return i - index;
}
static size_t get_next_line(size_t index, const char *buffer) {
if (buffer[index] == 0)
return index;
size_t displacement;
get_line_offset(&displacement, index, buffer);
while (buffer[index] != '\n') {
if (buffer[index] == 0)
return index;
index++;
}
index++;
size_t next_line_length = get_line_length(index, buffer);
if (displacement > next_line_length)
displacement = next_line_length;
return index + displacement;
}
static size_t get_prev_line(size_t index, const char *buffer) {
size_t offset, displacement, prev_line_offset, prev_line_length;
offset = get_line_offset(&displacement, index, buffer);
if (offset) {
prev_line_offset = get_line_offset(NULL, offset - 1, buffer);
prev_line_length = get_line_length(prev_line_offset, buffer);
if (displacement > prev_line_length)
displacement = prev_line_length;
return prev_line_offset + displacement;
}
return offset;
}
static const char *VALID_KEYS[] = {
"COMMENT",
"PROTOCOL",
"CMDLINE",
"KERNEL_CMDLINE",
"KERNEL_PATH",
"INITRD_PATH",
"MODULE_PATH",
"MODULE_STRING",
"MODULE_CMDLINE",
"RESOLUTION",
"TEXTMODE",
"KASLR",
"DRIVE",
"PARTITION",
"MBR_ID",
"GPT_GUID",
"GPT_UUID",
"IMAGE_PATH",
NULL
};
static bool validation_enabled = true;
static bool invalid_syntax = false;
static int validate_line(const char *buffer) {
if (!validation_enabled) return TOK_KEY;
if (buffer[0] == '#')
return TOK_COMMENT;
char keybuf[64];
size_t i;
for (i = 0; buffer[i] && i < 64; i++) {
if (buffer[i] == '=') goto found_equals;
keybuf[i] = buffer[i];
}
fail:
if (i < 64) keybuf[i] = 0;
if (keybuf[0] == '\n' || (!keybuf[0] && buffer[0] != '=')) return TOK_KEY; // blank line is valid
invalid_syntax = true;
return TOK_BADKEY;
found_equals:
if (i < 64) keybuf[i] = 0;
for (i = 0; VALID_KEYS[i]; i++) {
if (!strcmp(keybuf, VALID_KEYS[i])) {
return TOK_KEY;
}
}
goto fail;
}
static void putchar_tokencol(int type, char c) {
switch (type) {
case TOK_KEY:
print("\e[36m%c\e[0m", c);
break;
case TOK_EQUALS:
print("\e[32m%c\e[0m", c);
break;
default:
case TOK_VALUE:
print("\e[39m%c\e[0m", c);
break;
case TOK_BADKEY:
print("\e[31m%c\e[0m", c);
break;
case TOK_COMMENT:
print("\e[33m%c\e[0m", c);
break;
}
}
static bool editor_no_term_reset = false;
char *config_entry_editor(const char *title, const char *orig_entry) {
FOR_TERM(TERM->autoflush = false);
FOR_TERM(TERM->cursor_enabled = true);
print("\e[2J\e[H");
size_t cursor_offset = 0;
size_t entry_size = strlen(orig_entry);
size_t _window_size = terms[0]->rows - 8;
size_t window_offset = 0;
size_t line_size = terms[0]->cols - 2;
bool display_overflow_error = false;
// Skip leading newlines
while (*orig_entry == '\n') {
orig_entry++;
entry_size--;
}
if (entry_size >= EDITOR_MAX_BUFFER_SIZE) {
panic(true, "Entry is too big to be edited.");
}
bool syntax_highlighting_enabled = true;
char *syntax_highlighting_enabled_config = config_get_value(NULL, 0, "EDITOR_HIGHLIGHTING");
if (syntax_highlighting_enabled_config != NULL
&& strcmp(syntax_highlighting_enabled_config, "no") == 0) {
syntax_highlighting_enabled = false;
}
validation_enabled = true;
char *validation_enabled_config = config_get_value(NULL, 0, "EDITOR_VALIDATION");
if (validation_enabled_config != NULL
&& strcmp(validation_enabled_config, "no") == 0) {
validation_enabled = false;
}
char *buffer = ext_mem_alloc(EDITOR_MAX_BUFFER_SIZE);
memcpy(buffer, orig_entry, entry_size);
buffer[entry_size] = 0;
refresh:
invalid_syntax = false;
print("\e[2J\e[H");
FOR_TERM(TERM->cursor_enabled = false);
{
size_t x, y;
print("\n");
terms[0]->get_cursor_pos(terms[0], &x, &y);
set_cursor_pos_helper(terms[0]->cols / 2 - DIV_ROUNDUP(strlen(menu_branding), 2), y);
print("\e[3%sm%s\e[37m", menu_branding_colour, menu_branding);
print("\n\n");
}
print(" \e[32mESC\e[0m Discard and Exit \e[32mF10\e[0m Boot\n\n");
print(serial ? "/" : "┌");
for (size_t i = 0; i < terms[0]->cols - 2; i++) {
switch (i) {
case 1: case 2: case 3:
if (window_offset > 0) {
print(serial ? "^" : "↑");
break;
}
// FALLTHRU
default: {
size_t title_length = strlen(title);
if (i == (terms[0]->cols / 2) - DIV_ROUNDUP(title_length, 2) - 1) {
print("%s", title);
i += title_length - 1;
} else {
print(serial ? "-" : "─");
}
}
}
}
size_t tmpx, tmpy;
terms[0]->get_cursor_pos(terms[0], &tmpx, &tmpy);
print(serial ? "\\" : "┐");
set_cursor_pos_helper(0, tmpy + 1);
print(serial ? "|" : "│");
size_t cursor_x, cursor_y;
size_t current_line = 0, line_offset = 0, window_size = _window_size;
bool printed_cursor = false;
bool printed_early = false;
int token_type = validate_line(buffer);
for (size_t i = 0; ; i++) {
// newline
if (buffer[i] == '\n'
&& current_line < window_offset + window_size
&& current_line >= window_offset) {
size_t x, y;
terms[0]->get_cursor_pos(terms[0], &x, &y);
if (i == cursor_offset) {
cursor_x = x;
cursor_y = y;
printed_cursor = true;
}
set_cursor_pos_helper(terms[0]->cols - 1, y);
if (current_line == window_offset + window_size - 1) {
terms[0]->get_cursor_pos(terms[0], &tmpx, &tmpy);
print(serial ? "|" : "│");
set_cursor_pos_helper(0, tmpy + 1);
print(serial ? "\\" : "└");
} else {
terms[0]->get_cursor_pos(terms[0], &tmpx, &tmpy);
print(serial ? "|" : "│");
set_cursor_pos_helper(0, tmpy + 1);
print(serial ? "|" : "│");
}
line_offset = 0;
token_type = validate_line(buffer + i + 1);
current_line++;
continue;
}
// switch to token type 1 if equals sign
if (token_type == TOK_KEY && buffer[i] == '=') token_type = TOK_EQUALS;
if (buffer[i] != 0 && line_offset % line_size == line_size - 1) {
if (current_line < window_offset + window_size
&& current_line >= window_offset) {
if (i == cursor_offset) {
terms[0]->get_cursor_pos(terms[0], &cursor_x, &cursor_y);
printed_cursor = true;
}
if (syntax_highlighting_enabled) {
putchar_tokencol(token_type, buffer[i]);
} else {
print("%c", buffer[i]);
}
printed_early = true;
size_t x, y;
terms[0]->get_cursor_pos(terms[0], &x, &y);
if (y == terms[0]->rows - 3) {
print(serial ? ">" : "→");
set_cursor_pos_helper(0, y + 1);
print(serial ? "\\" : "└");
} else {
print(serial ? ">" : "→");
set_cursor_pos_helper(0, y + 1);
print(serial ? "<" : "←");
}
}
window_size--;
}
if (i == cursor_offset
&& current_line < window_offset + window_size
&& current_line >= window_offset
&& !printed_cursor) {
terms[0]->get_cursor_pos(terms[0], &cursor_x, &cursor_y);
printed_cursor = true;
}
if (buffer[i] == 0 || current_line >= window_offset + window_size) {
if (!printed_cursor) {
if (i <= cursor_offset) {
window_offset++;
goto refresh;
}
if (i > cursor_offset) {
window_offset--;
goto refresh;
}
}
break;
}
if (buffer[i] == '\n') {
line_offset = 0;
token_type = validate_line(buffer + i + 1);
current_line++;
continue;
}
if (current_line >= window_offset) {
line_offset++;
// syntax highlighting
if (!printed_early) {
if (syntax_highlighting_enabled) {
putchar_tokencol(token_type, buffer[i]);
} else {
print("%c", buffer[i]);
}
}
printed_early = false;
// switch to token type 2 after equals sign
if (token_type == TOK_EQUALS) token_type = TOK_VALUE;
}
}
// syntax error alert
if (validation_enabled) {
size_t x, y;
terms[0]->get_cursor_pos(terms[0], &x, &y);
set_cursor_pos_helper(0, terms[0]->rows - 1);
FOR_TERM(TERM->scroll_enabled = false);
if (invalid_syntax) {
print("\e[31mConfiguration is INVALID.\e[0m");
} else {
print("\e[32mConfiguration is valid.\e[0m");
}
FOR_TERM(TERM->scroll_enabled = true);
set_cursor_pos_helper(x, y);
}
if (current_line - window_offset < window_size) {
size_t x, y;
for (size_t i = 0; i < (window_size - (current_line - window_offset)) - 1; i++) {
terms[0]->get_cursor_pos(terms[0], &x, &y);
set_cursor_pos_helper(terms[0]->cols - 1, y);
print(serial ? "|" : "│");
set_cursor_pos_helper(0, y + 1);
print(serial ? "|" : "│");
}
terms[0]->get_cursor_pos(terms[0], &x, &y);
set_cursor_pos_helper(terms[0]->cols - 1, y);
print(serial ? "|" : "│");
set_cursor_pos_helper(0, y + 1);
print(serial ? "\\" : "└");
}
for (size_t i = 0; i < terms[0]->cols - 2; i++) {
switch (i) {
case 1: case 2: case 3:
if (current_line - window_offset >= window_size) {
print(serial ? "v" : "↓");
break;
}
// FALLTHRU
default:
print(serial ? "-" : "─");
}
}
terms[0]->get_cursor_pos(terms[0], &tmpx, &tmpy);
print(serial ? "/" : "┘");
set_cursor_pos_helper(0, tmpy + 1);
if (display_overflow_error) {
FOR_TERM(TERM->scroll_enabled = false);
print("\e[31mText buffer not big enough, delete something instead.");
FOR_TERM(TERM->scroll_enabled = true);
display_overflow_error = false;
}
// Hack to redraw the cursor
set_cursor_pos_helper(cursor_x, cursor_y);
FOR_TERM(TERM->cursor_enabled = true);
FOR_TERM(TERM->double_buffer_flush(TERM));
int c = getchar();
size_t buffer_len = strlen(buffer);
switch (c) {
case GETCHAR_CURSOR_DOWN:
cursor_offset = get_next_line(cursor_offset, buffer);
break;
case GETCHAR_CURSOR_UP:
cursor_offset = get_prev_line(cursor_offset, buffer);
break;
case GETCHAR_CURSOR_LEFT:
if (cursor_offset) {
cursor_offset--;
}
break;
case GETCHAR_CURSOR_RIGHT:
if (cursor_offset < buffer_len) {
cursor_offset++;
}
break;
case GETCHAR_HOME: {
size_t displacement;
get_line_offset(&displacement, cursor_offset, buffer);
cursor_offset -= displacement;
break;
}
case GETCHAR_END: {
cursor_offset += get_line_length(cursor_offset, buffer);
break;
}
case '\b':
if (cursor_offset) {
cursor_offset--;
case GETCHAR_DELETE:
for (size_t i = cursor_offset; ; i++) {
buffer[i] = buffer[i+1];
if (!buffer[i])
break;
}
}
break;
case GETCHAR_F10:
editor_no_term_reset ? editor_no_term_reset = false : reset_term();
return buffer;
case GETCHAR_ESCAPE:
pmm_free(buffer, EDITOR_MAX_BUFFER_SIZE);
editor_no_term_reset ? editor_no_term_reset = false : reset_term();
return NULL;
default:
if (buffer_len < EDITOR_MAX_BUFFER_SIZE - 1) {
if (isprint(c) || c == '\n') {
for (size_t i = buffer_len; ; i--) {
buffer[i+1] = buffer[i];
if (i == cursor_offset)
break;
}
buffer[cursor_offset++] = c;
}
} else {
display_overflow_error = true;
}
break;
}
goto refresh;
}
static size_t print_tree(size_t offset, size_t window, const char *shift, size_t level, size_t base_index, size_t selected_entry,
struct menu_entry *current_entry,
struct menu_entry **selected_menu_entry,
size_t *max_len, size_t *max_height) {
size_t max_entries = 0;
bool no_print = false;
size_t dummy_max_len = 0;
if (max_len == NULL) {
max_len = &dummy_max_len;
}
size_t dummy_max_height = 0;
if (max_height == NULL) {
max_height = &dummy_max_height;
}
if (!level) {
*max_len = 0;
*max_height = 0;
}
if (shift == NULL) {
no_print = true;
}
for (;;) {
size_t cur_len = 0;
if (current_entry == NULL)
break;
if (!no_print && base_index + max_entries < offset) {
goto skip_line;
}
if (!no_print && base_index + max_entries >= offset + window) {
goto skip_line;
}
if (!no_print) print("%s", shift);
if (level) {
for (size_t i = level - 1; i > 0; i--) {
struct menu_entry *actual_parent = current_entry;
for (size_t j = 0; j < i; j++)
actual_parent = actual_parent->parent;
if (actual_parent->next != NULL) {
if (!no_print) print(serial ? " |" : " │");
} else {
if (!no_print) print(" ");
}
cur_len += 2;
}
if (current_entry->next == NULL) {
if (!no_print) print(serial ? " `" : " └");
} else {
if (!no_print) print(serial ? " |" : " ├");
}
cur_len += 2;
}
if (current_entry->sub) {
if (!no_print) print(current_entry->expanded ? "[-]" : "[+]");
cur_len += 3;
} else if (level) {
if (!no_print) print(serial ? "-> " : "─►");
cur_len += 2;
} else {
if (!no_print) print(" ");
cur_len += 3;
}
if (base_index + max_entries == selected_entry) {
*selected_menu_entry = current_entry;
if (!no_print) print("\e[7m");
}
if (!no_print) print(" %s \e[27m\n", current_entry->name);
(*max_height)++;
cur_len += 1 + strlen(current_entry->name) + 1;
skip_line:
if (current_entry->sub && current_entry->expanded) {
max_entries += print_tree(offset, window, shift, level + 1, base_index + max_entries + 1,
selected_entry,
current_entry->sub,
selected_menu_entry,
max_len, max_height);
}
max_entries++;
current_entry = current_entry->next;
if (cur_len > *max_len) {
*max_len = cur_len;
}
}
return max_entries;
}
static struct memmap_entry *rewound_memmap = NULL;
static size_t rewound_memmap_entries = 0;
static no_unwind uint8_t *rewound_data;
#if defined (BIOS)
static no_unwind uint8_t *rewound_s2_data;
static no_unwind uint8_t *rewound_bss;
#endif
extern symbol data_begin;
extern symbol data_end;
#if defined (BIOS)
extern symbol s2_data_begin;
extern symbol s2_data_end;
extern symbol bss_begin;
extern symbol bss_end;
#endif
static void menu_init_term(void) {
// If there is GRAPHICS config key and the value is "yes", enable graphics
#if defined (BIOS)
char *graphics = config_get_value(NULL, 0, "GRAPHICS");
#elif defined (UEFI)
char *graphics = "yes";
#endif
if (graphics == NULL || strcmp(graphics, "no") != 0) {
size_t req_width = 0, req_height = 0, req_bpp = 0;
char *menu_resolution = config_get_value(NULL, 0, "INTERFACE_RESOLUTION");
if (menu_resolution != NULL)
parse_resolution(&req_width, &req_height, &req_bpp, menu_resolution);
if (!quiet && !gterm_init(NULL, NULL, NULL, req_width, req_height)) {
#if defined (BIOS)
vga_textmode_init(true);
#elif defined (UEFI)
term_fallback();
#endif
}
} else {
#if defined (BIOS)
if (!quiet) {
vga_textmode_init(true);
}
#endif
}
}
#if defined(UEFI)
bool reboot_to_fw_ui_supported(void) {
uint64_t os_indications_supported;
UINTN size = sizeof(os_indications_supported);
EFI_GUID global_variable = EFI_GLOBAL_VARIABLE;
EFI_STATUS status = gRT->GetVariable(L"OsIndicationsSupported", &global_variable, NULL, &size, &os_indications_supported);
if (status == EFI_SUCCESS && size == sizeof(os_indications_supported)) {
return (os_indications_supported & EFI_OS_INDICATIONS_BOOT_TO_FW_UI) != 0;
}
return false;
}
noreturn void reboot_to_fw_ui(void) {
reset_term();
print("Rebooting to the firmware setup...\n");
uint64_t os_indications;
UINTN size = sizeof(os_indications);
EFI_GUID global_variable = EFI_GLOBAL_VARIABLE;
EFI_STATUS status = gRT->GetVariable(L"OsIndications", &global_variable, NULL, &size, &os_indications);
if (status != EFI_SUCCESS || size != sizeof(os_indications)) {
if (status == EFI_NOT_FOUND) {
os_indications = 0;
goto not_found;
}
panic(true, "Failed to get OsIndications variable, status=%X", status);
}
not_found:;
uint64_t new_os_indications = os_indications | EFI_OS_INDICATIONS_BOOT_TO_FW_UI;
status = gRT->SetVariable(L"OsIndications", &global_variable,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
sizeof(new_os_indications), &new_os_indications);
if (status != EFI_SUCCESS) {
panic(true, "Failed to set OsIndications variable, status=%X", status);
}
gRT->ResetSystem(EfiResetWarm, EFI_SUCCESS, 0, NULL);
panic(true, "Failed to reboot to firmware UI");
}
#endif
noreturn void _menu(bool first_run) {
size_t data_size = (uintptr_t)data_end - (uintptr_t)data_begin;
#if defined (BIOS)
size_t s2_data_size = (uintptr_t)s2_data_end - (uintptr_t)s2_data_begin;
size_t bss_size = (uintptr_t)bss_end - (uintptr_t)bss_begin;
#endif
if (rewound_memmap != NULL) {
memcpy(data_begin, rewound_data, data_size);
#if defined (BIOS)
memcpy(s2_data_begin, rewound_s2_data, s2_data_size);
memcpy(bss_begin, rewound_bss, bss_size);
#endif
memcpy(memmap, rewound_memmap, rewound_memmap_entries * sizeof(struct memmap_entry));
memmap_entries = rewound_memmap_entries;
} else {
rewound_data = ext_mem_alloc(data_size);
#if defined (BIOS)
rewound_s2_data = ext_mem_alloc(s2_data_size);
rewound_bss = ext_mem_alloc(bss_size);
#endif
rewound_memmap = ext_mem_alloc(MEMMAP_MAX * sizeof(struct memmap_entry));
if (memmap_entries > MEMMAP_MAX) {
panic(false, "menu: Too many memmap entries");
}
memcpy(rewound_memmap, memmap, memmap_entries * sizeof(struct memmap_entry));
rewound_memmap_entries = memmap_entries;
memcpy(rewound_data, data_begin, data_size);
#if defined (BIOS)
memcpy(rewound_s2_data, s2_data_begin, s2_data_size);
memcpy(rewound_bss, bss_begin, bss_size);
#endif
}
term_fallback();
if (bad_config == false) {
#if defined (UEFI)
if (init_config_disk(boot_volume)) {
#endif
volume_iterate_parts(boot_volume,
if (!init_config_disk(_PART)) {
boot_volume = _PART;
break;
}
);
#if defined (UEFI)
}
#endif
}
char *quiet_str = config_get_value(NULL, 0, "QUIET");
quiet = quiet_str != NULL && strcmp(quiet_str, "yes") == 0;
char *verbose_str = config_get_value(NULL, 0, "VERBOSE");
verbose = verbose_str != NULL && strcmp(verbose_str, "yes") == 0;
char *serial_str = config_get_value(NULL, 0, "SERIAL");
serial = serial_str != NULL && strcmp(serial_str, "yes") == 0;
char *hash_mismatch_panic_str = config_get_value(NULL, 0, "HASH_MISMATCH_PANIC");
hash_mismatch_panic = hash_mismatch_panic_str == NULL || strcmp(hash_mismatch_panic_str, "yes") == 0;
char *randomise_mem_str = config_get_value(NULL, 0, "RANDOMISE_MEMORY");
if (randomise_mem_str == NULL)
randomise_mem_str = config_get_value(NULL, 0, "RANDOMIZE_MEMORY");
bool randomise_mem = randomise_mem_str != NULL && strcmp(randomise_mem_str, "yes") == 0;
if (randomise_mem) {
pmm_randomise_memory();
}
char *editor_enabled_str = config_get_value(NULL, 0, "EDITOR_ENABLED");
if (editor_enabled_str != NULL) {
editor_enabled = strcmp(editor_enabled_str, "yes") == 0;
}
char *help_hidden_str = config_get_value(NULL, 0, "INTERFACE_HELP_HIDDEN");
if (help_hidden_str != NULL) {
help_hidden = strcmp(help_hidden_str, "yes") == 0;
}
menu_branding = config_get_value(NULL, 0, "INTERFACE_BRANDING");
if (menu_branding == NULL)
menu_branding = "Limine " LIMINE_VERSION;
menu_branding_colour = config_get_value(NULL, 0, "INTERFACE_BRANDING_COLOUR");
if (menu_branding_colour == NULL)
menu_branding_colour = config_get_value(NULL, 0, "INTERFACE_BRANDING_COLOR");
if (menu_branding_colour == NULL)
menu_branding_colour = "6";
bool skip_timeout = false;
struct menu_entry *selected_menu_entry = NULL;
size_t selected_entry = 0;
char *default_entry = config_get_value(NULL, 0, "DEFAULT_ENTRY");
if (default_entry != NULL) {
selected_entry = strtoui(default_entry, NULL, 10);
if (selected_entry)
selected_entry--;
}
size_t timeout = 5;
char *timeout_config = config_get_value(NULL, 0, "TIMEOUT");
if (timeout_config != NULL) {
if (!strcmp(timeout_config, "no"))
skip_timeout = true;
else
timeout = strtoui(timeout_config, NULL, 10);
}
#if defined(UEFI)
bool reboot_to_firmware_supported = reboot_to_fw_ui_supported();
#endif
if (!first_run) {
skip_timeout = true;
}
if (!skip_timeout && !timeout) {
// Use print tree to load up selected_menu_entry and determine if the
// default entry is valid.
print_tree(0, 0, NULL, 0, 0, selected_entry, menu_tree, &selected_menu_entry, NULL, NULL);
if (selected_menu_entry == NULL || selected_menu_entry->sub != NULL) {
quiet = false;
print("Default entry is not valid or directory, booting to menu.\n");
skip_timeout = true;
} else {
goto autoboot;
}
}
menu_init_term();
size_t tree_offset = 0;
refresh:
if (selected_entry >= tree_offset + terms[0]->rows - 10) {
tree_offset = selected_entry - (terms[0]->rows - 11);
}
if (selected_entry < tree_offset) {
tree_offset = selected_entry;
}
FOR_TERM(TERM->autoflush = false);
FOR_TERM(TERM->cursor_enabled = false);
print("\e[2J\e[H");
{
size_t x, y;
print("\n");
terms[0]->get_cursor_pos(terms[0], &x, &y);
set_cursor_pos_helper(terms[0]->cols / 2 - DIV_ROUNDUP(strlen(menu_branding), 2), y);
print("\e[3%sm%s\e[37m", menu_branding_colour, menu_branding);
print("\n\n\n\n");
}
while (menu_tree == NULL) {
if (quiet) {
quiet = false;
menu_init_term();
FOR_TERM(TERM->autoflush = false);
FOR_TERM(TERM->cursor_enabled = false);
}
print("Config file %s.\n\n", config_ready ? "contains no valid entries" : "not found");
print("For information on the format of Limine config entries, consult CONFIG.md in\n");
print("the root of the Limine source repository.\n\n");
print("Press a key to enter the Limine console...");
FOR_TERM(TERM->double_buffer_flush(TERM));
getchar();
reset_term();
console();
}
size_t max_tree_len, max_tree_height;
print_tree(tree_offset, terms[0]->rows - 10, NULL, 0, 0, selected_entry, menu_tree,
&selected_menu_entry, &max_tree_len, &max_tree_height);
size_t tree_prefix_len = (terms[0]->cols / 2 - DIV_ROUNDUP(max_tree_len, 2)) - 2;
char *tree_prefix = ext_mem_alloc(tree_prefix_len + 1);
memset(tree_prefix, ' ', tree_prefix_len);
set_cursor_pos_helper(0, terms[0]->rows / 2 - DIV_ROUNDUP(max_tree_height, 2));
size_t max_entries = print_tree(tree_offset, terms[0]->rows - 10, tree_prefix, 0, 0, selected_entry, menu_tree,
&selected_menu_entry, NULL, NULL);
pmm_free(tree_prefix, tree_prefix_len);
{
size_t x, y;
terms[0]->get_cursor_pos(terms[0], &x, &y);
if (tree_offset + (terms[0]->rows - 10) < max_entries) {
set_cursor_pos_helper(2, terms[0]->rows - 2);
print(serial ? "vvv" : "↓↓↓");
}
if (!help_hidden) {
set_cursor_pos_helper(0, 3);
if (editor_enabled && selected_menu_entry->sub == NULL) {
print(" \e[32mARROWS\e[0m Select \e[32mENTER\e[0m Boot \e[32mE\e[0m Edit");
} else {
print(" \e[32mARROWS\e[0m Select \e[32mENTER\e[0m %s",
selected_menu_entry->expanded ? "Collapse" : "Expand");
}
#if defined(UEFI)
if (reboot_to_firmware_supported) {
set_cursor_pos_helper(terms[0]->cols - 33, 3);
print("\e[32mS\e[0m Firmware Setup");
}
#endif
set_cursor_pos_helper(terms[0]->cols - 13, 3);
print("\e[32mC\e[0m Console");
}
set_cursor_pos_helper(x, y);
}
if (selected_menu_entry->sub != NULL)
skip_timeout = true;
int c;
if (skip_timeout == false) {
print("\n\n");
for (size_t i = timeout; i; i--) {
set_cursor_pos_helper(0, terms[0]->rows - 1);
FOR_TERM(TERM->scroll_enabled = false);
print("\e[2K\e[32mBooting automatically in \e[92m%u\e[32m, press any key to stop the countdown...\e[0m", i);
FOR_TERM(TERM->scroll_enabled = true);
FOR_TERM(TERM->double_buffer_flush(TERM));
if ((c = pit_sleep_and_quit_on_keypress(1))) {
skip_timeout = true;
if (quiet) {
quiet = false;
menu_init_term();
goto timeout_aborted;
}
print("\e[2K");
FOR_TERM(TERM->double_buffer_flush(TERM));
goto timeout_aborted;
}
}
goto autoboot;
}
set_cursor_pos_helper(0, terms[0]->rows - 1);
if (selected_menu_entry->comment != NULL) {
FOR_TERM(TERM->scroll_enabled = false);
print("\e[36m%s\e[0m", selected_menu_entry->comment);
FOR_TERM(TERM->scroll_enabled = true);
}
FOR_TERM(TERM->double_buffer_flush(TERM));
for (;;) {
c = getchar();
timeout_aborted:
switch (c) {
case '1': case '2': case '3': case '4': case '5':
case '6': case '7': case '8': case '9': {
int ent = (c - '0') - 1;
if (ent < (int)max_entries) {
selected_entry = ent;
print_tree(0, 0, NULL, 0, 0, selected_entry, menu_tree,
&selected_menu_entry, NULL, NULL);
goto autoboot;
}
goto refresh;
}
case GETCHAR_HOME:
selected_entry = 0;
goto refresh;
case GETCHAR_END:
selected_entry = max_entries - 1;
goto refresh;
case GETCHAR_CURSOR_UP:
if (selected_entry == 0)
selected_entry = max_entries - 1;
else
selected_entry--;
goto refresh;
case GETCHAR_CURSOR_DOWN:
if (++selected_entry == max_entries)
selected_entry = 0;
goto refresh;
case GETCHAR_CURSOR_RIGHT:
case '\n':
case ' ':
autoboot:
if (selected_menu_entry->sub != NULL) {
selected_menu_entry->expanded = !selected_menu_entry->expanded;
goto refresh;
}
if (!quiet) {
if (term_backend == FALLBACK) {
if (!gterm_init(NULL, NULL, NULL, 0, 0)) {
#if defined (BIOS)
vga_textmode_init(true);
#elif defined (UEFI)
term_fallback();
#endif
}
} else {
reset_term();
}
}
boot(selected_menu_entry->body);
case 'e':
case 'E': {
if (editor_enabled) {
if (selected_menu_entry->sub != NULL)
goto refresh;
editor_no_term_reset = true;
char *new_body = config_entry_editor(selected_menu_entry->name, selected_menu_entry->body);
if (new_body == NULL)
goto refresh;
selected_menu_entry->body = new_body;
goto autoboot;
}
break;
}
#if defined(UEFI)
case 's':
case 'S': {
if (reboot_to_firmware_supported) {
reboot_to_fw_ui();
}
break;
}
#endif
case 'c':
case 'C': {
reset_term();
console();
goto refresh;
}
}
}
}
noreturn void boot(char *config) {
char *cmdline = config_get_value(config, 0, "KERNEL_CMDLINE");
if (!cmdline) {
cmdline = config_get_value(config, 0, "CMDLINE");
}
if (!cmdline) {
cmdline = "";
}
char *proto = config_get_value(config, 0, "PROTOCOL");
if (proto == NULL) {
panic(true, "Boot protocol not specified for this entry");
}
if (!strcmp(proto, "limine")) {
limine_load(config, cmdline);
} else if (!strcmp(proto, "linux")) {
#if defined (__x86_64__) || defined (__i386__)
linux_load(config, cmdline);
#else
quiet = false;
print("TODO: Linux is not available on aarch64 or riscv64.\n\n");
#endif
} else if (!strcmp(proto, "multiboot1") || !strcmp(proto, "multiboot")) {
#if defined (__x86_64__) || defined (__i386__)
multiboot1_load(config, cmdline);
#else
quiet = false;
print("Multiboot 1 is not available on aarch64 or riscv64.\n\n");
#endif
} else if (!strcmp(proto, "multiboot2")) {
#if defined (__x86_64__) || defined (__i386__)
multiboot2_load(config, cmdline);
#else
quiet = false;
print("Multiboot 2 is not available on aarch64 or riscv64.\n\n");
#endif
} else if (!strcmp(proto, "chainload_next")) {
chainload_next(config, cmdline);
#if defined (BIOS)
} else if (!strcmp(proto, "bios_chainload")) {
#elif defined (UEFI)
} else if (!strcmp(proto, "efi_chainload")) {
#endif
chainload(config, cmdline);
}
panic(true, "Unsupported protocol specified for kernel.");
}
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