| Commit message (Collapse) | Author | Age | Files | Lines |
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EFI applications should be unloaded to avoid leaking memory. However, boot
or runtime services continue in the background. So they must not be
unloaded.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The majority of the stuff currently in include/boot.h is about bootm
code implemented common/bootm.c. To be more consistent move it to a
new file include/bootm.h.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Part of the barebox code and variables are put in separate sections
(.barebox* and .initcall*). When this code is compiled as position
independent code then the compiler creates corresponding .rela.barebox* and
.rela.initcall* sections with the relocation table entries.
These sections don't match the .rela.data* wildcard in the linker script.
As a result, they are not added to the .rela section during linking but are
added individually after it instead. And when the EFI binary is created
from the ELF binary, these sections are not copied.
This has two side effects:
1. The corresponding relocations are not handled by the generic relocation
code. 'fixup_tables()' was added to do these relocations manually.
2. In the DYNAMIC section, the RELASZ entry contains the total size of
relocations in bytes. This includes the .rela.barebox* and .rela.initcall*
sections. This value is not modified when the EFI binary is created. So the
value is too large.
The generic relocation code in _relocate() used this value when iterating
over all relocation entries. With the wrong RELASZ value it iterates beyond
the end of the .rela section into uninitialized memory. After power-on this
memory is zero and the relocation code interprets this as 'nothing to do',
so there is no visible effect. After a soft reset, random data in that area
may produce a seemingly valid relocation entry, a random address is
modified and barebox crashes.
This patch adds the .rela.barebox* and .rela.initcall* sections to the
normal .rela section. The RELASZ now contains the correct size and the
generic relocation code works correctly. 'fixup_tables()' must be removed
at the same time to avoid relocating these entries twice.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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We can make the dryrun option more useful by calling into the handlers.
With this we can detect more cases that can go wrong during boot.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This replaces the reset_cpu() function which every SoC or board must
provide with registered handlers. This makes it possible to have multiple
reset functions for boards which have multiple ways to reset the machine.
Also boards which have no way at all to reset the machine no longer
have to provide a dummy reset_cpu() function.
The problem this solves is that some machines have external PMICs or
similar to reset the system which have to be preferred over the
internal SoC reset, because the PMIC can reset not only the SoC but also
the external devices.
To pick the right way to reset a machine each handler has a priority. The
default priority is 100 and all currently existing restart handlers are
registered with this priority. of_get_restart_priority() allows to retrieve
the priority from the device tree which makes it possible for boards to
give certain restart handlers a higher priority in order to use this one
instead of the default one.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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LoaderTimeInitUSec and LoaderTimeExecUSec are used e.g. in systemd-analyze
to calculate the time spent in the firmare and barebox.
LoaderDevicePartUUID is used to mount the EFI partition to /boot.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Use allocate_pages() instead of allocate_pool(). With allocate_pages() we
can specify the address. This way, any address passed to the kernel will
never exceed the lower 32 bit.
If possible, try to allocate a larger pool.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The bus implementations currently call the drivers remove
hook unconditionally, but this hook is seldomly populated. Only call
it when it's actually populated.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This file originates in Linux. Linux has it under include/linux/
directory since commit dccd2304cc90.
Let's move it to the same place as well in barebox.
This commit was generated by the following commands:
find -name '*.[chS]' | xargs sed -i -e 's:<sizes.h>:<linux/sizes.h>:'
git mv include/sizes.h include/linux/
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Adds a command to drop back into the calling EFI process.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This allows to actually reset the system from barebox
instead of dropping back into the EFI firmware.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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last_block is a zero-based block number, so the total number of blocks is
last_block + 1
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Otherwise building produces these warnings:
[...]
arch/efi/efi/efi-image.c:48:2: warning: implicit declaration of function 'read_file' [-Wimplicit-function-declaration]
arch/efi/efi/efi-image.c:48:6: warning: assignment makes pointer from integer without a cast [enabled by default]
[...]
And bootm fails for x86_64. The implicit declaration has an int as return
value, so half of the returned address is lost.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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efi_get_global_var() returns an error code, not NULL when it fails.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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use in devinfo Protocols
Tested today on qemu with all the GUID translated
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This adds support for running barebox in an EFI environment
on X86 PC hardware.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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