VGA defined the extended ASCII set based on CP437, but the function vga_write_text() accepts a signed char array. This will cause unnecessary confusion that if we want to print u with umlaut (code=129 in CP437), we need to explicitly cast it to -127 in signed char. Since we still want to leverage the built-in string utilities which only accepts const char*, we still need to cast it to signed char while processing, and cast it back to unsigned once we write into the frame buffer. BRANCH=brya BUG=b:264666392 TEST=emerge-brya coreboot chromeos-bootimage Signed-off-by: Hsuan Ting Chen <roccochen@chromium.org> Change-Id: If555bbc05f40ce3f02339c0468afff6dda8b7ded Reviewed-on: https://review.coreboot.org/c/coreboot/+/73099 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tarun Tuli <taruntuli@google.com> |
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