Hej Heinrich,
On Thu, Jan 18, 2024, at 17:47, Heinrich Schuchardt wrote:
On 1/17/24 23:24, Janne Grunau via B4 Relay wrote:
Andre submitted 2 years ago DM_VIDEO improvements for UEFI applications using UEFI's EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL but did not follow with suggested changes. This series takes care of the UTF-8 support which required to draw symbol and box drawing characters used by UEFI applications like grub2 and sd-boot correctly.
Compared to Andre's version this version has the following changes:
- use and extend existing conversion functions from lib/charset.c
- convert first to UTF-32 to support the truetype console as well
- conversion is conditional on CONFIG_EFI_LOADER
- use escape sequences in tests as proposed by Heinrich
Hello Janne,
to correctly render GRUB I think you need the following:
- Use truetype
a truetype font is not necessary, the arrow glyphs used by grub are in codepage 437 (code points 0x10 - 0x1f, see https://en.wikipedia.org/wiki/Code_page_437#Character_set ). grub2 and sd-boot render correctly with this patchset and bitmap fonts.
- Add a mono-spaced Truetype font which has all the needed characters.
- A bunch of code fixed.
This is the font I once suggested.
[PATCH v2 1/1] video: add DejaVu Mono font https://lore.kernel.org/u-boot/20210301181534.7618-1-xypron.glpk@gmx.de/
Which font have you been using for testing?
The 8x16 and 16x32 bitmap fonts and the included Anker/Coder Narrow truetype font. All render the grub menu correctly but the bitmap fonts are missing some of the glyphs in the international character efi_selftest by Andre and you.
At the time these additional patches were needed.
[PATCH 0/6] efi_loader: Unicode output in UEFI applications https://lore.kernel.org/u-boot/20210227130840.166193-1-xypron.glpk@gmx.de/#r
That is functionally identical to this patchset except for the Unicode mapping for code page 437 code points 0x01 to 0x1f (Patch 3/6 "lib/charset: Map cp437 low chars (0x01 - 0x1f) from unicode"). I wasn't aware of this and stopped looking after Andre's patches. It looks like patches 5 and 6 were never merged. Was there a reason for that? best regards Janne
Link: https://lore.kernel.org/u-boot/20220110005638.21599-1-andre.przywara@arm.com... Signed-off-by: Janne Grunau j@jannau.net
Andre Przywara (2): efi_selftest: Add international characters test efi_selftest: Add box drawing character selftest
Janne Grunau (4): lib: charset: Fix utf8_to_utf32_stream() return value doc string video: console: Parse UTF-8 character sequences lib/charset: Map cp437 low chars (0x01 - 0x1f) from unicode efi_selftest: Add symbol character selftest
drivers/video/console_normal.c | 6 +++-- drivers/video/console_rotate.c | 16 +++++++++----- drivers/video/console_truetype.c | 8 +++---- drivers/video/vidconsole-uclass.c | 18 ++++++++++----- drivers/video/vidconsole_internal.h | 15 +++++++++++++ include/charset.h | 4 ++-- include/cp1250.h | 12 ++++++++-- include/cp437.h | 12 ++++++++-- include/video_console.h | 10 +++++---- lib/charset.c | 9 +++++--- lib/efi_loader/efi_unicode_collation.c | 2 +- lib/efi_selftest/efi_selftest_textoutput.c | 35 ++++++++++++++++++++++++++++++ 12 files changed, 116 insertions(+), 31 deletions(-)
base-commit: 866ca972d6c3cabeaf6dbac431e8e08bb30b3c8e change-id: 20240117-vidconsole-utf8-uefi-fa23b4ac65d6
Best regards,