UEFI applications rely on Unicode output capability, and might use that for drawing pseudo-graphical interfaces using Unicode defined box drawing characters.
Add a simple test to display the most basic box characters, which would need to be checked manually on the screen for correctness. To facilitate this, add a three second delay after the output at this point. Signed-off-by: Andre Przywara <[email protected]> --- lib/efi_selftest/efi_selftest_textoutput.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/lib/efi_selftest/efi_selftest_textoutput.c b/lib/efi_selftest/efi_selftest_textoutput.c index a437732496b..1542c187de7 100644 --- a/lib/efi_selftest/efi_selftest_textoutput.c +++ b/lib/efi_selftest/efi_selftest_textoutput.c @@ -123,6 +123,17 @@ static int execute(void) efi_st_error("OutputString failed for international chars\n"); return EFI_ST_FAILURE; } + ret = con_out->output_string(con_out, L"┌─┬─┐\n"); + ret |= con_out->output_string(con_out, L"│ │ │\n"); + ret |= con_out->output_string(con_out, L"├─┼─┤\n"); + ret |= con_out->output_string(con_out, L"│ │ │\n"); + ret |= con_out->output_string(con_out, L"└─┴─┘\n"); + if (ret != EFI_ST_SUCCESS) { + efi_st_error("OutputString failed for box drawing chars\n"); + return EFI_ST_FAILURE; + } + con_out->output_string(con_out, L"waiting for admiration...\n"); + EFI_CALL(systab.boottime->stall(3000000)); efi_st_printf("\n"); return EFI_ST_SUCCESS; -- 2.17.6
