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limine: Implement internal modules concept

This commit is contained in:
mintsuki 2023-03-24 01:02:31 +01:00
parent 5a53f91e01
commit d4334699e3
3 changed files with 58 additions and 6 deletions
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38
common/protos/limine.c
View File

@ -194,6 +194,17 @@ static uint64_t reported_addr(void *addr) {
return (uint64_t)(uintptr_t)addr + direct_map_offset;
}
#define get_phys_addr(addr) ({ \
__auto_type get_phys_addr__addr = (addr); \
uintptr_t get_phys_addr__r; \
if (get_phys_addr__addr & ((uint64_t)1 << 63)) { \
get_phys_addr__r = physical_base + (get_phys_addr__addr - virtual_base); \
} else { \
get_phys_addr__r = get_phys_addr__addr; \
} \
get_phys_addr__r; \
})
static struct limine_file get_file(struct file_handle *file, char *cmdline) {
struct limine_file ret = {0};
@ -623,6 +634,12 @@ FEAT_START
break;
}
size_t config_module_count = module_count;
if (module_request->revision >= 1) {
module_count += module_request->internal_module_count;
}
if (module_count == 0) {
break;
}
@ -633,12 +650,23 @@ FEAT_START
struct limine_file *modules = ext_mem_alloc(module_count * sizeof(struct limine_file));
for (size_t i = 0; i < module_count; i++) {
struct conf_tuple conf_tuple =
config_get_tuple(config, i,
"MODULE_PATH", "MODULE_CMDLINE");
char *module_path;
char *module_cmdline;
char *module_path = conf_tuple.value1;
char *module_cmdline = conf_tuple.value2;
if (i < config_module_count) {
struct conf_tuple conf_tuple =
config_get_tuple(config, i,
"MODULE_PATH", "MODULE_CMDLINE");
module_path = conf_tuple.value1;
module_cmdline = conf_tuple.value2;
} else {
uint64_t *internal_modules = (void *)get_phys_addr(module_request->internal_modules);
struct limine_internal_module *internal_module = (void *)get_phys_addr(internal_modules[i - config_module_count]);
module_path = (char *)get_phys_addr(internal_module->path);
module_cmdline = (char *)get_phys_addr(internal_module->cmdline);
}
if (module_cmdline == NULL) {
module_cmdline = "";

12
limine.h
View File

@ -355,6 +355,14 @@ struct limine_kernel_file_request {
#define LIMINE_MODULE_REQUEST { LIMINE_COMMON_MAGIC, 0x3e7e279702be32af, 0xca1c4f3bd1280cee }
#define LIMINE_INTERNAL_MODULE_REQUIRED (1 << 0)
struct limine_internal_module {
LIMINE_PTR(const char *) path;
LIMINE_PTR(const char *) cmdline;
uint64_t flags;
};
struct limine_module_response {
uint64_t revision;
uint64_t module_count;
@ -365,6 +373,10 @@ struct limine_module_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_module_response *) response;
/* Revision 1 */
uint64_t internal_module_count;
LIMINE_PTR(struct limine_internal_module **) internal_modules;
};
/* RSDP */

14
test/limine.c
View File

@ -55,9 +55,21 @@ struct limine_kernel_file_request kf_request = {
__attribute__((section(".limine_reqs")))
void *kf_req = &kf_request;
struct limine_internal_module internal_module1 = {
.path = "boot:///boot/test.elf",
.cmdline = "First internal module"
};
struct limine_internal_module *internal_modules[] = {
&internal_module1
};
struct limine_module_request module_request = {
.id = LIMINE_MODULE_REQUEST,
.revision = 0, .response = NULL
.revision = 1, .response = NULL,
.internal_module_count = 1,
.internal_modules = internal_modules
};
__attribute__((section(".limine_reqs")))