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Implemented initial printk. Added multiboot support.

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This commit is contained in:
L. Bradley LaBoon
2014-01-31 16:12:04 -05:00
parent 3b27d50edb
commit f23f3a8a8d
12 changed files with 257 additions and 38 deletions
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42
kernel/brados.c
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@@ -1,36 +1,20 @@
#include <stddef.h>
#include <stdint.h>
#include <brados/printk.h>
#include <brados/string.h>
#include <video/vga.h>
#include <multiboot.h>
// Make sure we are using the right compiler
#if defined(__linux__)
#error "You are using the wrong compiler."
#endif
// Test various VGA functionality
void vgaTests(struct vgastate *term)
{
// Test line wrapping
term_writeStr(term, "Welcome to the desert of the real. I thought what I'd do was I'd pretend I was one of those deaf mutes.\n\n");
// Test colors
term_setColor(term, make_color(VGA_COLOR_BLACK, VGA_COLOR_WHITE));
term_writeStr(term, "This text should be inverse.\n");
term_setColor(term, make_color(VGA_COLOR_LIGHT_BLUE, VGA_COLOR_GREEN));
term_writeStr(term, "This text should be colorful.\n\n");
// Test scrolling
term_setColor(term, make_color(VGA_COLOR_LIGHT_GREY, VGA_COLOR_BLACK));
for (size_t i = 0; i < 20; i++) {
term_writeStr(term, "Printing some lines.\n");
for (volatile size_t j = 0; j < 100000000; j++);
}
}
// Main kernel function
void brados_main()
void brados_main(uint32_t multiMagic, uint32_t multiAddr)
{
// Initialize VGA terminal
struct vgastate term;
term_init(&term);
@@ -38,7 +22,21 @@ void brados_main()
term_writeStr(&term, "Welcome to BRaDOS!\n");
term_writeStr(&term, "written by L. Bradley LaBoon\n\n");
vgaTests(&term);
// VGA tests
//term_test(&term);
// Get multiboot info
printk(&term, "Multiboot value: %x\n", multiMagic);
if (multiMagic != 0x2BADB002) {
term_writeStr(&term, "Error! Multiboot header not present. Quitting.\n");
return;
}
printk(&term, "Multiboot address: %x\n", multiAddr);
struct multiboot_header *multiHead = (struct multiboot_header *) multiAddr;
printk(&term, "Flags: %x\nMem Lower: %x\nMem Upper: %x\n", multiHead->flags, multiHead->mem_lower, multiHead->mem_upper);
char *bootName = (char *) multiHead->boot_loader_name;
printk(&term, "Boot loader: %s\n\n", bootName);
// Done
term_writeStr(&term, "Done.");
}