limine/test/stivale2.c

169 lines
6.9 KiB
C

#include <stivale2.h>
#include <stdint.h>
#include <e9print.h>
#include <stddef.h>
typedef uint8_t stack[4096];
static stack stacks[10] = {0};
void stivale2_main(struct stivale2_struct *info);
struct stivale2_header_tag_smp smp_request = {
.tag = {
.identifier = STIVALE2_HEADER_TAG_SMP_ID,
.next = 0
},
.flags = 0
};
struct stivale2_tag fb_mtrr_request = {
.identifier = STIVALE2_HEADER_TAG_FB_MTRR_ID,
.next = (uint64_t)&smp_request
};
struct stivale2_header_tag_framebuffer framebuffer_request = {
.tag = {
.identifier = STIVALE2_HEADER_TAG_FRAMEBUFFER_ID,
.next = (uint64_t)&fb_mtrr_request
},
.framebuffer_width = 0,
.framebuffer_height = 0,
.framebuffer_bpp = 0,
};
__attribute__((section(".stivale2hdr"), used))
struct stivale2_header header2 = {
.entry_point = (uint64_t)stivale2_main,
.stack = (uintptr_t)stacks[0] + sizeof(stack),
.flags = 0,
.tags = (uint64_t)&framebuffer_request
};
static volatile int cpu_up = 0;
static void ap_entry(struct stivale2_smp_info *s) {
e9_printf("\t\t\tAP %d started", s->lapic_id);
cpu_up = 1;
for (;;) asm("hlt");
}
void stivale2_main(struct stivale2_struct *info) {
// Print stuff.
e9_puts("Stivale2 info passed to the kernel:");
e9_printf("Bootloader brand: %s", info->bootloader_brand);
e9_printf("Bootloader version: %s", info->bootloader_version);
// Print the tags.
struct stivale2_tag *tag = (struct stivale2_tag *)info->tags;
while (tag != NULL) {
switch (tag->identifier) {
case STIVALE2_STRUCT_TAG_CMDLINE_ID: {
struct stivale2_struct_tag_cmdline *c = (struct stivale2_struct_tag_cmdline *)tag;
e9_puts("Commandline tag:");
e9_printf("\tCmdline: %s", (char*)(c->cmdline));
break;
}
case STIVALE2_STRUCT_TAG_MEMMAP_ID: {
struct stivale2_struct_tag_memmap *m = (struct stivale2_struct_tag_memmap *)tag;
e9_puts("Memmap tag:");
e9_printf("\tEntries: %d", m->entries);
for (size_t i = 0; i < m->entries; i++) {
struct stivale2_mmap_entry me = m->memmap[i];
e9_printf("\t\t[%x+%x] %x", me.base, me.length, me.type);
}
break;
}
case STIVALE2_STRUCT_TAG_FRAMEBUFFER_ID: {
struct stivale2_struct_tag_framebuffer *f = (struct stivale2_struct_tag_framebuffer *)tag;
e9_puts("Framebuffer tag:");
e9_printf("\tAddress: %x", f->framebuffer_addr);
e9_printf("\tWidth: %d", f->framebuffer_width);
e9_printf("\tHeight: %d", f->framebuffer_height);
e9_printf("\tPitch: %d", f->framebuffer_pitch);
e9_printf("\tBPP: %d", f->framebuffer_bpp);
e9_printf("\tMemory model: %d", f->memory_model);
e9_printf("\tRed mask size: %d", f->red_mask_size);
e9_printf("\tRed mask size: %d", f->red_mask_shift);
e9_printf("\tGreen mask size: %d", f->green_mask_size);
e9_printf("\tGreen mask size: %d", f->green_mask_shift);
e9_printf("\tBlue mask size: %d", f->blue_mask_size);
e9_printf("\tBlue mask size: %d", f->blue_mask_shift);
break;
}
case STIVALE2_STRUCT_TAG_EDID_ID: {
struct stivale2_struct_tag_edid *edid = (struct stivale2_struct_tag_edid *)tag;
e9_printf("EDID information at %x:", edid->edid_information);
e9_printf("\tSize: %d", edid->edid_size);
}
case STIVALE2_STRUCT_TAG_FB_MTRR_ID: {
e9_puts("Framebuffer WC MTRR tag:");
e9_puts("\tFramebuffer WC MTRR enabled");
break;
}
case STIVALE2_STRUCT_TAG_MODULES_ID: {
struct stivale2_struct_tag_modules *m = (struct stivale2_struct_tag_modules *)tag;
e9_puts("Modules tag:");
e9_printf("\tCount: %d", m->module_count);
for (size_t i = 0; i < m->module_count; i++) {
struct stivale2_module me = m->modules[i];
e9_printf("\t\t[%x+%x] %s", me.begin, me.end, me.string);
}
break;
}
case STIVALE2_STRUCT_TAG_RSDP_ID: {
struct stivale2_struct_tag_rsdp *r = (struct stivale2_struct_tag_rsdp *)tag;
e9_puts("RSDP tag:");
e9_printf("\tRSDP: %x", r->rsdp);
break;
}
case STIVALE2_STRUCT_TAG_EPOCH_ID: {
struct stivale2_struct_tag_epoch *e = (struct stivale2_struct_tag_epoch *)tag;
e9_puts("Epoch tag:");
e9_printf("\tEpoch: %x", e->epoch);
break;
}
case STIVALE2_STRUCT_TAG_FIRMWARE_ID: {
struct stivale2_struct_tag_firmware *f = (struct stivale2_struct_tag_firmware *)tag;
e9_puts("Firmware tag:");
e9_printf("\tFlags: %x", f->flags);
break;
}
case STIVALE2_STRUCT_TAG_EFI_SYSTEM_TABLE_ID: {
struct stivale2_struct_tag_efi_system_table *t = (struct stivale2_struct_tag_efi_system_table *)tag;
e9_printf("EFI system table at: %x", t->system_table);
break;
}
case STIVALE2_STRUCT_TAG_SMP_ID: {
struct stivale2_struct_tag_smp *s = (struct stivale2_struct_tag_smp *)tag;
e9_puts("SMP tag:");
e9_printf("\tFlags: %x", s->flags);
e9_printf("\tBSP LAPIC ID: %d", s->bsp_lapic_id);
e9_printf("\tCPU Count: %d", s->cpu_count);
for (size_t i = 0; i < s->cpu_count; i++) {
struct stivale2_smp_info *in = &s->smp_info[i];
e9_printf("\t\tProcessor ID: %d", in->processor_id);
e9_printf("\t\tLAPIC ID: %d", in->lapic_id);
e9_printf("\t\tTarget Stack: %x", in->target_stack);
e9_printf("\t\tGOTO Address: %x", in->goto_address);
e9_printf("\t\tExtra Argument: %x", in->extra_argument);
if (in->lapic_id != s->bsp_lapic_id) {
in->target_stack = (uintptr_t)stacks[in->lapic_id] + sizeof(stack);
in->goto_address = (uintptr_t)ap_entry;
while (cpu_up == 0);
cpu_up = 0;
}
}
break;
}
default:
e9_printf("BUG: Unidentifier tag %x", tag->identifier);
}
tag = (struct stivale2_tag *)tag->next;
}
// Enter our sublime pale slumber.
for (;;) asm("hlt");
}