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config: Add initial support for config directory entries

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This commit is contained in:
mintsuki 2020-11-16 23:31:03 +01:00
parent 970b4e3fc9
commit dc54ee97eb
21 changed files with 276 additions and 82 deletions
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3
Makefile
View File

@ -49,8 +49,9 @@ echfs-test: limine-install test.img
sed "s/@GUID@/`cat part_guid`/g" < test/limine.cfg > limine.cfg.tmp
echfs-utils -m -p0 test.img import limine.cfg.tmp limine.cfg
rm -f limine.cfg.tmp part_guid
echfs-utils -m -p0 test.img import stage2.map boot/stage2.map
echfs-utils -m -p0 test.img import test/test.elf boot/test.elf
echfs-utils -m -p0 test.img import test/bg.bmp bg.bmp
echfs-utils -m -p0 test.img import test/bg.bmp boot/bg.bmp
./limine-install limine.bin test.img
qemu-system-x86_64 -net none -smp 4 -enable-kvm -cpu host -hda test.img -debugcon stdio

BIN
limine-pxe.bin
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BIN
limine.bin
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BIN
stage2.map
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2
stage2/drivers/vbe.c
View File

@ -322,7 +322,7 @@ bool vbe_tty_init(int *_rows, int *_cols, uint32_t *_colours, int _margin, int _
int req_width = 0, req_height = 0, req_bpp = 0;
if (config_get_value(buf, 0, 32, "MENU_RESOLUTION"))
if (config_get_value(NULL, buf, 0, 32, "MENU_RESOLUTION"))
parse_resolution(&req_width, &req_height, &req_bpp, buf);
// We force bpp to 32

118
stage2/lib/config.c
View File

@ -8,6 +8,8 @@
#include <lib/print.h>
#include <pxe/tftp.h>
#include <sys/cpu.h>
#define SEPARATOR '\n'
bool config_ready = false;
@ -44,6 +46,81 @@ int init_config_pxe(void) {
return init_config(cfg.file_size);
}
#define NOT_CHILD (-1)
#define DIRECT_CHILD 0
#define INDIRECT_CHILD 1
static int is_child(char *buf, size_t limit,
size_t current_depth, size_t index) {
if (!config_get_entry_name(buf, index, limit))
return NOT_CHILD;
if (strlen(buf) < current_depth + 1)
return NOT_CHILD;
for (size_t j = 0; j < current_depth; j++)
if (buf[j] != ':')
return NOT_CHILD;
if (buf[current_depth] == ':')
return INDIRECT_CHILD;
return DIRECT_CHILD;
}
static bool is_directory(char *buf, size_t limit,
size_t current_depth, size_t index) {
switch (is_child(buf, limit, current_depth + 1, index + 1)) {
default:
case NOT_CHILD:
return false;
case INDIRECT_CHILD:
panic("config: Malformed config file. Parentless child.");
case DIRECT_CHILD:
return true;
}
}
static struct menu_entry *create_menu_tree(struct menu_entry *parent,
size_t current_depth, size_t index) {
struct menu_entry *root = NULL, *prev = NULL;
for (size_t i = index; ; i++) {
static char name[64];
switch (is_child(name, 64, current_depth, i)) {
case NOT_CHILD:
return root;
case INDIRECT_CHILD:
continue;
case DIRECT_CHILD:
break;
}
struct menu_entry *entry = conv_mem_alloc(sizeof(struct menu_entry));
if (root == NULL)
root = entry;
config_get_entry_name(name, i, 64);
strcpy(entry->name, name + current_depth);
entry->parent = parent;
if (is_directory(name, 64, current_depth, i)) {
entry->sub = create_menu_tree(entry, current_depth + 1, i + 1);
} else {
size_t entry_size;
char *config_entry = config_get_entry(&entry_size, i);
entry->body = conv_mem_alloc(entry_size + 1);
memcpy(entry->body, config_entry, entry_size);
entry->body[entry_size] = 0;
}
if (prev != NULL)
prev->next = entry;
prev = entry;
}
}
struct menu_entry *menu_tree = NULL;
int init_config(size_t config_size) {
// remove windows carriage returns, if any
for (size_t i = 0; i < config_size; i++) {
@ -54,18 +131,20 @@ int init_config(size_t config_size) {
}
}
menu_tree = create_menu_tree(NULL, 1, 0);
config_ready = true;
return 0;
}
int config_get_entry_name(char *ret, size_t index, size_t limit) {
bool config_get_entry_name(char *ret, size_t index, size_t limit) {
char *p = config_addr;
for (size_t i = 0; i <= index; i++) {
while (*p != ':') {
if (!*p)
return -1;
return false;
p++;
}
p++;
@ -73,6 +152,8 @@ int config_get_entry_name(char *ret, size_t index, size_t limit) {
i--;
}
p--;
size_t i;
for (i = 0; i < (limit - 1); i++) {
if (p[i] == SEPARATOR)
@ -81,16 +162,17 @@ int config_get_entry_name(char *ret, size_t index, size_t limit) {
}
ret[i] = 0;
return 0;
return true;
}
int config_set_entry(size_t index) {
char *config_get_entry(size_t *size, size_t index) {
char *ret;
char *p = config_addr;
for (size_t i = 0; i <= index; i++) {
while (*p != ':') {
if (!*p)
return -1;
return NULL;
p++;
}
p++;
@ -98,7 +180,11 @@ int config_set_entry(size_t index) {
i--;
}
config_addr = p;
do {
p++;
} while (*p != '\n');
ret = p;
cont:
while (*p != ':' && *p)
@ -109,29 +195,33 @@ cont:
goto cont;
}
*p = 0;
*size = p - ret;
return 0;
return ret;
}
char *config_get_value(char *buf, size_t index, size_t limit, const char *key) {
char *config_get_value(const char *config,
char *buf, size_t index, size_t limit, const char *key) {
if (!limit || !buf || !key)
return NULL;
if (config == NULL)
config = config_addr;
size_t key_len = strlen(key);
for (size_t i = 0; config_addr[i]; i++) {
if (!strncmp(&config_addr[i], key, key_len) && config_addr[i + key_len] == '=') {
if (i && config_addr[i - 1] != SEPARATOR)
for (size_t i = 0; config[i]; i++) {
if (!strncmp(&config[i], key, key_len) && config[i + key_len] == '=') {
if (i && config[i - 1] != SEPARATOR)
continue;
if (index--)
continue;
i += key_len + 1;
size_t j;
for (j = 0; config_addr[i + j] != SEPARATOR && config_addr[i + j]; j++) {
for (j = 0; config[i + j] != SEPARATOR && config[i + j]; j++) {
if (j == limit - 1)
break;
buf[j] = config_addr[i + j];
buf[j] = config[i + j];
}
buf[j] = 0;
return buf;

18
stage2/lib/config.h
View File

@ -7,11 +7,23 @@
extern bool config_ready;
struct menu_entry {
char name[64];
struct menu_entry *parent;
struct menu_entry *sub;
bool expanded;
char *body;
struct menu_entry *next;
};
extern struct menu_entry *menu_tree;
int init_config_disk(struct part *part);
int init_config_pxe(void);
int init_config(size_t config_size);
int config_get_entry_name(char *ret, size_t index, size_t limit);
int config_set_entry(size_t index);
char *config_get_value(char *buf, size_t index, size_t limit, const char *key);
bool config_get_entry_name(char *ret, size_t index, size_t limit);
char *config_get_entry(size_t *size, size_t index);
char *config_get_value(const char *config,
char *buf, size_t index, size_t limit, const char *key);
#endif

2
stage2/lib/print.c
View File

@ -119,7 +119,7 @@ static char print_buf[PRINT_BUF_MAX];
void vprint(const char *fmt, va_list args) {
if (config_ready && e9_output == -1) {
e9_output = config_get_value(print_buf, 0, PRINT_BUF_MAX, "E9_OUTPUT") &&
e9_output = config_get_value(NULL, print_buf, 0, PRINT_BUF_MAX, "E9_OUTPUT") &&
!strcmp(print_buf, "yes");
}

2
stage2/lib/trace.c
View File

@ -12,7 +12,7 @@ static char *stage2_map = NULL;
void trace_init(void) {
char map_filename[80];
if (!config_get_value(map_filename, 0, 80, "STAGE2_MAP"))
if (!config_get_value(NULL, map_filename, 0, 80, "STAGE2_MAP"))
return;
struct file_handle stage2_map_file;

13
stage2/main.c
View File

@ -70,21 +70,22 @@ void entry(uint8_t _boot_drive, int pxe_boot) {
trace_init();
char *cmdline = menu();
char *cmdline;
char *config = menu(&cmdline);
char proto[32];
if (!config_get_value(proto, 0, 32, "PROTOCOL")) {
if (!config_get_value(config, proto, 0, 32, "PROTOCOL")) {
panic("PROTOCOL not specified");
}
if (!strcmp(proto, "stivale")) {
stivale_load(cmdline);
stivale_load(config, cmdline);
} else if (!strcmp(proto, "stivale2")) {
stivale2_load(cmdline);
stivale2_load(config, cmdline);
} else if (!strcmp(proto, "linux")) {
linux_load(cmdline);
linux_load(config, cmdline);
} else if (!strcmp(proto, "chainload")) {
chainload();
chainload(config);
} else {
panic("Invalid protocol specified");
}

90
stage2/menu.c
View File

@ -16,20 +16,50 @@
static char *cmdline;
#define CMDLINE_MAX 1024
static char config_entry_name[1024];
static int print_tree(int level, int base_index, int selected_entry,
struct menu_entry *current_entry,
struct menu_entry **selected_menu_entry) {
int max_entries = 0;
for (;;) {
if (current_entry == NULL)
break;
for (int i = 0; i < level; i++)
print(" ");
if (current_entry->sub)
print(current_entry->expanded ? "[-] " : "[+] ");
else
print(" ");
if (base_index + max_entries == selected_entry) {
*selected_menu_entry = current_entry;
print("\e[47m\e[30m");
}
print(" %s \e[0m\n", current_entry->name);
if (current_entry->sub && current_entry->expanded) {
max_entries += print_tree(level + 1, base_index + max_entries + 1,
selected_entry,
current_entry->sub,
selected_menu_entry);
}
max_entries++;
current_entry = current_entry->next;
}
return max_entries;
}
char *menu(void) {
char *menu(char **cmdline_ret) {
cmdline = conv_mem_alloc(CMDLINE_MAX);
char *buf = conv_mem_alloc(256);
struct menu_entry *selected_menu_entry;
int selected_entry = 0;
if (config_get_value(buf, 0, 16, "DEFAULT_ENTRY")) {
if (config_get_value(NULL, buf, 0, 16, "DEFAULT_ENTRY")) {
selected_entry = (int)strtoui(buf, NULL, 10);
}
int timeout = 5;
if (config_get_value(buf, 0, 16, "TIMEOUT")) {
if (config_get_value(NULL, buf, 0, 16, "TIMEOUT")) {
timeout = (int)strtoui(buf, NULL, 10);
}
@ -37,7 +67,7 @@ char *menu(void) {
goto autoboot;
// If there is GRAPHICS config key and the value is "yes", enable graphics
if (config_get_value(buf, 0, 16, "GRAPHICS") && !strcmp(buf, "yes")) {
if (config_get_value(NULL, buf, 0, 16, "GRAPHICS") && !strcmp(buf, "yes")) {
// default scheme
int margin = 64;
int margin_gradient = 20;
@ -52,8 +82,8 @@ char *menu(void) {
0x00aaaaaa // grey
};
if (config_get_value(buf, 0, 256, "THEME_COLOURS")
|| config_get_value(buf, 0, 256, "THEME_COLORS")) {
if (config_get_value(NULL, buf, 0, 256, "THEME_COLOURS")
|| config_get_value(NULL, buf, 0, 256, "THEME_COLORS")) {
const char *first = buf;
for (int i = 0; i < 8; i++) {
const char *last;
@ -67,15 +97,15 @@ char *menu(void) {
}
}
if (config_get_value(buf, 0, 16, "THEME_MARGIN")) {
if (config_get_value(NULL, buf, 0, 16, "THEME_MARGIN")) {
margin = (int)strtoui(buf, NULL, 10);
}
if (config_get_value(buf, 0, 16, "THEME_MARGIN_GRADIENT")) {
if (config_get_value(NULL, buf, 0, 16, "THEME_MARGIN_GRADIENT")) {
margin_gradient = (int)strtoui(buf, NULL, 10);
}
if (!config_get_value(cmdline, 0, CMDLINE_MAX, "BACKGROUND_PATH"))
if (!config_get_value(NULL, cmdline, 0, CMDLINE_MAX, "BACKGROUND_PATH"))
goto nobg;
struct file_handle *bg_file = conv_mem_alloc(sizeof(struct file_handle));
@ -98,24 +128,17 @@ char *menu(void) {
disable_cursor();
bool skip_timeout = false;
if (menu_tree == NULL)
panic("Config contains no entries.");
refresh:
clear(true);
print("\n\n \e[36m Limine " LIMINE_VERSION " \e[37m\n\n\n");
print("Select an entry:\n\n");
int max_entries;
for (max_entries = 0; ; max_entries++) {
if (config_get_entry_name(config_entry_name, max_entries, 1024) == -1)
break;
if (max_entries == selected_entry)
print(" \e[47m\e[30m %s \e[40m\e[37m\n", config_entry_name);
else
print(" %s\n", config_entry_name);
}
if (max_entries == 0)
panic("Config contains no entries.");
int max_entries = print_tree(0, 0, selected_entry, menu_tree,
&selected_menu_entry);
print("\nArrows to choose, enter to select, 'e' to edit command line.");
@ -148,27 +171,34 @@ timeout_aborted:
goto refresh;
case '\r':
autoboot:
config_set_entry(selected_entry);
if (selected_menu_entry->sub != NULL) {
skip_timeout = true;
selected_menu_entry->expanded = !selected_menu_entry->expanded;
goto refresh;
}
enable_cursor();
if (!config_get_value(cmdline, 0, CMDLINE_MAX, "KERNEL_CMDLINE")) {
if (!config_get_value(cmdline, 0, CMDLINE_MAX, "CMDLINE")) {
if (!config_get_value(selected_menu_entry->body, cmdline, 0, CMDLINE_MAX, "KERNEL_CMDLINE")) {
if (!config_get_value(selected_menu_entry->body, cmdline, 0, CMDLINE_MAX, "CMDLINE")) {
cmdline[0] = '\0';
}
}
clear(true);
return cmdline;
*cmdline_ret = cmdline;
return selected_menu_entry->body;
case 'e':
config_set_entry(selected_entry);
if (selected_menu_entry->sub != NULL)
goto refresh;
enable_cursor();
if (!config_get_value(cmdline, 0, CMDLINE_MAX, "KERNEL_CMDLINE")) {
if (!config_get_value(cmdline, 0, CMDLINE_MAX, "CMDLINE")) {
if (!config_get_value(selected_menu_entry->body, cmdline, 0, CMDLINE_MAX, "KERNEL_CMDLINE")) {
if (!config_get_value(selected_menu_entry->body, cmdline, 0, CMDLINE_MAX, "CMDLINE")) {
cmdline[0] = '\0';
}
}
print("\n\n> ");
readline(cmdline, cmdline, CMDLINE_MAX);
clear(true);
return cmdline;
*cmdline_ret = cmdline;
return selected_menu_entry->body;
}
}
}

2
stage2/menu.h
View File

@ -1,6 +1,6 @@
#ifndef __MENU_H__
#define __MENU_H__
char *menu(void);
char *menu(char **cmdline_ret);
#endif

6
stage2/protos/chainload.c
View File

@ -46,12 +46,12 @@ static void spinup(uint8_t drive) {
);
}
void chainload(void) {
void chainload(char *config) {
uint64_t val;
int part; {
char buf[32];
if (!config_get_value(buf, 0, 32, "PARTITION")) {
if (!config_get_value(config, buf, 0, 32, "PARTITION")) {
part = -1;
} else {
val = strtoui(buf, NULL, 10);
@ -63,7 +63,7 @@ void chainload(void) {
}
int drive; {
char buf[32];
if (!config_get_value(buf, 0, 32, "DRIVE")) {
if (!config_get_value(config, buf, 0, 32, "DRIVE")) {
panic("DRIVE not specified");
}
val = strtoui(buf, NULL, 10);

2
stage2/protos/chainload.h
View File

@ -1,6 +1,6 @@
#ifndef __PROTOS__CHAINLOAD_H__
#define __PROTOS__CHAINLOAD_H__
void chainload(void);
void chainload(char *config);
#endif

6
stage2/protos/linux.c
View File

@ -52,11 +52,11 @@ static void spinup(uint16_t real_mode_code_seg, uint16_t kernel_entry_seg) {
);
}
void linux_load(char *cmdline) {
void linux_load(char *config, char *cmdline) {
char buf[128];
struct file_handle *kernel = conv_mem_alloc(sizeof(struct file_handle));
if (!config_get_value(buf, 0, 128, "KERNEL_PATH"))
if (!config_get_value(config, buf, 0, 128, "KERNEL_PATH"))
panic("KERNEL_PATH not specified");
if (!uri_open(kernel, buf))
@ -130,7 +130,7 @@ void linux_load(char *cmdline) {
size_t modules_mem_base = INITRD_LOAD_ADDR;
for (size_t i = 0; ; i++) {
char module_path[64];
if (!config_get_value(module_path, i, 64, "MODULE_PATH"))
if (!config_get_value(config, module_path, i, 64, "MODULE_PATH"))
break;
struct file_handle module;

4
stage2/protos/linux.h
View File

@ -1,8 +1,6 @@
#ifndef __PROTOS__LINUX_H__
#define __PROTOS__LINUX_H__
#include <fs/file.h>
void linux_load(char *cmdline);
void linux_load(char *config, char *cmdline);
#endif

10
stage2/protos/stivale.c
View File

@ -25,14 +25,14 @@
struct stivale_struct stivale_struct = {0};
void stivale_load(char *cmdline) {
void stivale_load(char *config, char *cmdline) {
char buf[128];
stivale_struct.flags |= (1 << 0); // set bit 0 since we are BIOS and not UEFI
struct file_handle *kernel = conv_mem_alloc(sizeof(struct file_handle));
if (!config_get_value(buf, 0, 128, "KERNEL_PATH"))
if (!config_get_value(config, buf, 0, 128, "KERNEL_PATH"))
panic("KERNEL_PATH not specified");
if (!uri_open(kernel, buf))
@ -117,14 +117,14 @@ void stivale_load(char *cmdline) {
uint64_t *prev_mod_ptr = &stivale_struct.modules;
for (int i = 0; ; i++) {
char module_file[64];
if (!config_get_value(module_file, i, 64, "MODULE_PATH"))
if (!config_get_value(config, module_file, i, 64, "MODULE_PATH"))
break;
stivale_struct.module_count++;
struct stivale_module *m = conv_mem_alloc(sizeof(struct stivale_module));
if (!config_get_value(m->string, i, 128, "MODULE_STRING")) {
if (!config_get_value(config, m->string, i, 128, "MODULE_STRING")) {
m->string[0] = '\0';
}
@ -171,7 +171,7 @@ void stivale_load(char *cmdline) {
int req_height = stivale_hdr.framebuffer_height;
int req_bpp = stivale_hdr.framebuffer_bpp;
if (config_get_value(buf, 0, 128, "RESOLUTION"))
if (config_get_value(config, buf, 0, 128, "RESOLUTION"))
parse_resolution(&req_width, &req_height, &req_bpp, buf);
struct vbe_framebuffer_info fbinfo;

2
stage2/protos/stivale.h
View File

@ -6,7 +6,7 @@
#include <sys/e820.h>
#include <mm/vmm.h>
void stivale_load(char *cmdline);
void stivale_load(char *config, char *cmdline);
pagemap_t stivale_build_pagemap(bool level5pg);
__attribute__((noreturn)) void stivale_spinup(

12
stage2/protos/stivale2.c
View File

@ -50,12 +50,12 @@ static void append_tag(struct stivale2_struct *s, struct stivale2_tag *tag) {
s->tags = (uint64_t)(size_t)tag;
}
void stivale2_load(char *cmdline) {
void stivale2_load(char *config, char *cmdline) {
char buf[128];
struct file_handle *kernel = conv_mem_alloc(sizeof(struct file_handle));
if (!config_get_value(buf, 0, 128, "KERNEL_PATH"))
if (!config_get_value(config, buf, 0, 128, "KERNEL_PATH"))
panic("KERNEL_PATH not specified");
if (!uri_open(kernel, buf))
@ -158,7 +158,7 @@ void stivale2_load(char *cmdline) {
size_t module_count;
for (module_count = 0; ; module_count++) {
char module_file[64];
if (!config_get_value(module_file, module_count, 64, "MODULE_PATH"))
if (!config_get_value(config, module_file, module_count, 64, "MODULE_PATH"))
break;
}
@ -171,12 +171,12 @@ void stivale2_load(char *cmdline) {
for (int i = 0; ; i++) {
char module_file[64];
if (!config_get_value(module_file, i, 64, "MODULE_PATH"))
if (!config_get_value(config, module_file, i, 64, "MODULE_PATH"))
break;
struct stivale2_module *m = &tag->modules[i];
if (!config_get_value(m->string, i, 128, "MODULE_STRING")) {
if (!config_get_value(config, m->string, i, 128, "MODULE_STRING")) {
m->string[0] = '\0';
}
@ -258,7 +258,7 @@ void stivale2_load(char *cmdline) {
int req_height = hdrtag->framebuffer_height;
int req_bpp = hdrtag->framebuffer_bpp;
if (config_get_value(buf, 0, 128, "RESOLUTION"))
if (config_get_value(config, buf, 0, 128, "RESOLUTION"))
parse_resolution(&req_width, &req_height, &req_bpp, buf);
struct vbe_framebuffer_info fbinfo;

2
stage2/protos/stivale2.h
View File

@ -1,6 +1,6 @@
#ifndef __PROTOS__STIVALE2_H__
#define __PROTOS__STIVALE2_H__
void stivale2_load(char *cmdline);
void stivale2_load(char *config, char *cmdline);
#endif

64
test/limine.cfg
View File

@ -10,7 +10,69 @@ THEME_MARGIN=64
BACKGROUND_PATH=bios://:1/boot/bg.bmp
:Stivale Test
:Legacy
::12345
PROTOCOL=stivale
KERNEL_PATH=guid://@GUID@/boot/test.elf
KERNEL_CMDLINE=Hi! This is an example!
MODULE_PATH=bios://:1/boot/test.elf
MODULE_STRING=yooooo
::Stivale Test
PROTOCOL=stivale
KERNEL_PATH=bios://:1/boot/test.elf
KERNEL_CMDLINE=Hi! This is an example!
MODULE_PATH=bios://:1/boot/test.elf
MODULE_STRING=yooooo
MODULE_PATH=bios://:1/boot/bg.bmp
MODULE_STRING=yooooo
::123456
:::Stivale Test
PROTOCOL=stivale
KERNEL_PATH=bios://:1/boot/test.elf
KERNEL_CMDLINE=Hi! This is an example!
MODULE_PATH=bios://:1/boot/test.elf
MODULE_STRING=yooooo
MODULE_PATH=bios://:1/boot/bg.bmp
MODULE_STRING=yooooo
:::123123123
PROTOCOL=stivale
KERNEL_PATH=bios://:1/boot/test.elf
KERNEL_CMDLINE=Hi! This is an example!
MODULE_PATH=bios://:1/boot/test.elf
MODULE_STRING=yooooo
MODULE_PATH=bios://:1/boot/bg.bmp
MODULE_STRING=yooooo
:::foo
::::bar
PROTOCOL=stivale
KERNEL_PATH=bios://:1/boot/test.elf
KERNEL_CMDLINE=Hi! This is an example!
MODULE_PATH=bios://:1/boot/test.elf
MODULE_STRING=yooooo
MODULE_PATH=bios://:1/boot/bg.bmp
MODULE_STRING=yooooo
::Stivale Test
PROTOCOL=stivale
KERNEL_PATH=bios://:1/boot/test.elf