1 files changed, 104 insertions, 0 deletions
diff --git a/src/kernel.cpp b/src/kernel.cpp
new file mode 100644
index 0000000..ae3f153
--- /dev/null
+++ b/src/kernel.cpp
@@ -0,0 +1,104 @@
+#include "acpi.hpp"
+#include "ata.hpp"
+#include "gdt.hpp"
+#include "idt.hpp"
+#include "keyboard.hpp"
+#include "memory.hpp"
+#include "multiboot.hpp"
+#include "pic.hpp"
+#include "pit.hpp"
+#include "portio.hpp"
+#include "tasking.hpp"
+#include "vgaterminal.hpp"
+
+static VGATerminal vga;
+TextOutput& term = vga;
+
+static volatile bool termBusy = false;
+
+void ata_probe(auto bus, ATA::Drive drv, const char *name)
+{
+    switch (bus.identify(drv)) {
+    case ATA::Type::ATA:
+        term.write("ata:");
+        term.write(name);
+        term.write(": ATA drive detected.\n");
+        break;
+    case ATA::Type::ATAPI:
+        term.write("ata:");
+        term.write(name);
+        term.write(": ATAPI drive detected.\n");
+        break;
+    default:
+        break;
+    }
+}
+
+void kernel_main(void) 
+{
+    term.write("Clyne's kernel, v2024\n\n");
+
+    if (!multiboot_initialize())
+        for (;;);
+
+    idt_register_callback(14, [](auto& regs) {
+        term.write("Page fault! eip=");
+        term.write(regs.eip);
+        term.write('\n');
+        for (;;);
+    });
+
+    acpi_initialize();
+    memory_initialize();
+    gdt_initialize();
+    pic_initialize();
+    idt_initialize();
+    pit_initialize();
+    keyboard_initialize();
+    asm volatile("sti");
+    tasking_initialize();
+    term.write("Tasking enabled.\n");
+
+    ATA::Bus<ATA::Primary> bus0;
+    ATA::Bus<ATA::Secondary> bus1;
+
+    ata_probe(bus0, ATA::Master, "0:0");
+    ata_probe(bus0, ATA::Slave,  "0:1");
+    ata_probe(bus1, ATA::Master, "1:0");
+    ata_probe(bus1, ATA::Slave,  "1:1");
+
+    idt_register_callback(0x28, [](auto& regs) {
+        term.write(static_cast<char>(regs.eax));
+    });
+
+    term.write("Entering user mode...\n");
+    enter_user_mode([] {
+        asm volatile("int $0x28" :: "a" ('Z'));
+        for (;;);
+    });
+
+    for (;;) {
+        const auto ch = keyboard_read();
+        if (ch)
+            term.write(*ch);
+
+        pit_delay_ms(10);
+    }
+}
+
+extern "C"
+void abort()
+{
+    term.write("!!! abort() called !!!");
+    asm volatile("cli");
+    for (;;);
+}
+
+extern "C"
+int __cxa_atexit(void (*)(void *), void *, void *)
+{
+    return 0;
+}
+
+int __dso_handle = 0;
+