#include "efi.h"
#include "tianole/boot_info.h"

static efi_char16_t banner_text[] = {
    'T', 'i', 'a', 'n', 'o', 'l', 'e', ' ',
    'x', '8', '6', ' ', 'b', 'o', 'o', 't',
    ' ', 's', 't', 'u', 'b', ' ', 'l', 'o',
    'a', 'd', 'e', 'd', '.', '\r', '\n', 0
};

static const tianole_boot_info_t boot_info = {
    .version = TIANOLE_BOOT_INFO_VERSION,
    .boot_flags = 0,
};

static inline void debug_putc(char ch) {
    __asm__ volatile("outb %0, $0xe9" : : "a"(ch));
}

static void debug_puts(const char *text) {
    while (*text != '\0') {
        if (*text == '\n') {
            debug_putc('\r');
        }
        debug_putc(*text++);
    }
}

static void debug_boot_info(const tianole_boot_info_t *info) {
    (void)info;
    debug_puts("boot_info.version=1\n");
}

efi_status EFIAPI efi_main(efi_handle image_handle, efi_system_table_t *system_table) {
    (void)image_handle;

    system_table->con_out->output_string(system_table->con_out, banner_text);
    debug_puts("Tianole x86 boot stub loaded.\n");
    debug_boot_info(&boot_info);

    for (;;) {
        system_table->boot_services->stall(1000 * 1000);
    }
}