src/boot/efi/log.c

/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include <efi.h>
#include <efilib.h>

#include "log.h"

static unsigned log_count = 0;

void efi_assert(const char *expr, const char *file, unsigned line, const char *function) {
        log_error("systemd-boot assertion '%s' failed at %s:%u@%s. Halting.", expr, file, line, function);
        for (;;)
                BS->Stall(60 * 1000 * 1000);
}

EFI_STATUS log_internal(EFI_STATUS status, const char *format, ...) {
        assert(format);

        int32_t attr = ST->ConOut->Mode->Attribute;

        if (ST->ConOut->Mode->CursorColumn > 0)
                ST->ConOut->OutputString(ST->ConOut, (char16_t *) u"\r\n");
        ST->ConOut->SetAttribute(ST->ConOut, EFI_LIGHTRED | EFI_BACKGROUND_BLACK);

        va_list ap;
        va_start(ap, format);
        vprintf_status(status, format, ap);
        va_end(ap);

        ST->ConOut->OutputString(ST->ConOut, (char16_t *) u"\r\n");
        ST->ConOut->SetAttribute(ST->ConOut, attr);

        log_count++;
        return status;
}

void log_wait(void) {
        if (log_count == 0)
                return;

        BS->Stall(MIN(4u, log_count) * 2500 * 1000);
        log_count = 0;
}