> Date: Wed, 20 Dec 2017 08:15:46 +0100 > From: Maxime Ripard <maxime.rip...@free-electrons.com> > > On Wed, Dec 20, 2017 at 01:55:51AM +0000, Andr=E9 Przywara wrote: > > On 19/12/17 15:24, Maxime Ripard wrote: > > > On Tue, Dec 19, 2017 at 02:41:17PM +0100, Mark Kettenis wrote: > > >>> Date: Tue, 19 Dec 2017 14:12:02 +0100 > > >>> From: Maxime Ripard <maxime.rip...@free-electrons.com> > > >>> > > >>> On Tue, Dec 05, 2017 at 10:28:20AM +0000, Andre Przywara wrote: > > >>>> So even though the actual u-boot.bin for 64-bit boards is still some= > what > > >>>> below the limit (~480KB), adding the ATF image (~32KB) pushes it over > > >>>> the edge. So since v2017.11 u-boot.itb is already too big for the > > >>>> traditional MMC env location. > > >>> > > >>> So I've had a quick look about what could go possibly go away in our > > >>> current armv8 config (using the pine64+ defconfig). Let me know if > > >>> some are actually vitals: > > >>> > > >>> - FIT_ENABLE_SHA256_SUPPORT > > >>> - CONSOLE_MUX > > >>> - CMD_CRC32 > > >>> - CMD_LZMADEC > > >>> - CMD_UNZIP > > >>> - CMD_LOADB > > >>> - CMD_LOADS > > >>> - CMD_MISC (actually implementing the command sleep) > > >>> - ISO_PARTITION (yes. For CDROMs.) > > >>> - VIDEO_BPP8, VIDEO_BPP16 > > >>> - VIDEO_ANSI > > >>> - SHA256 > > >>> - LZMA > > >>> > > >>> Removing those options make the u-boot.itb binary size going from > > >>> 516kB to 478kB, making it functional again *and* allowing us to enable > > >>> the DT overlays that seem way more important than any feature > > >>> mentionned above (and bumps the size to 483kB). > > >> > > >> So without CONFIG_CONSOLE_MUX, what is the behaviour when both serial > > >> console and usb keyboard are present? Is the usb keyboard used when > > >> it is plugged in but serial otherwise? > > >=20 > > > That's actually a very good question, and I don't know, I never used a > > > USB keyboard with U-Boot. > > >=20 > > > This is enabled on 7 Allwinner boards, and no one complained so far, > > > so I would expect to work without that option activated. However, it > > > doesn't take that much space either, so it's not like we really need > > > to disable it either. > >=20 > > Just tested it: without CONSOLE_MUX we don't use video and USB keyboard > > automatically. It seems to default to serial, "setenv stdout vidconsole" > > switches over (immediately). This is quite weird behaviour, and probably > > quite unpleasant for the casual user. > > With CONSOLE_MUX defined we get what we want: always serial console, > > plus USB keyboard and HDMI, if connected. Output appears on both, input > > is accepted from both. > > So I would very much like to keep it in. > > Sounds like we should even enable it for everyone then.
common/Kconfig has: config CONSOLE_MUX bool "Enable console multiplexing" default y if DM_VIDEO || VIDEO || LCD so it is already enabled in the cases where it matters. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot