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So far, barebox EFI meant EFI payload support on x86. Upcoming changes
will extend barebox to support EFI payload _and_ loader on ARM64.
Prepare for this by renaming files and directories appropriately, so
it's immediately clear whether a file is about payload, loader or common
support.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20211122084732.2597109-9-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The CREDITS file was removed from barebox in 2015 by commit 6570288f2d97
("Remove the CREDITS file"). Remove references to it from several files.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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55da0cf1 ("efi: add support for initrd loading") introduced support for
the Linux v3.6+ handover protocol[1]. As part of this change a x86 cli
(Clear Interrupt Flag) instruction was introduced just prior to the jump
into the kernel's EFI handover protocol entry point.
While the normal Linux x86 boot protocols require that interrupts are
masked on entry, this doesn't apply to the EFI stub, because the EFI
stub itself is the one implementing the boot protocol and as such
masks the interrupts itself[2].
EFI watchdogs may, and often are, implemented using a timer interrupt.
Dropping the cli will allow monitoring the boot of the kernel up to it
calling ExitBootServices.
In absence of a hardware watchdog, this is the only watchdog available
to users with EFI 1.0+, so it seems prudent to not make it even more
useless.
[1]: https://www.kernel.org/doc/Documentation/x86/boot.txt
[2]: Linux v5.4-rc4, arch/x86/boot/compressed/eboot.c
Cc: Michael Olbrich <mol@pengutronix.de>
Fixes: 55da0cf1 ("efi: add support for initrd loading")
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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make local functions static and remove unused code
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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