u-boot.git/scripts/Makefile.lib, branch v2020.01-rc2

x86: Avoid writing temporary asl files into the source tree

2019-08-09T14:24:02+00:00

At present the iasl tool (Intel ACPI (Advanced Configuration and Power
Interface) Source Language Compiler) is called in such a way that it uses
the source directory for its temporary files.

This means we end up with these files when building x86 boards:

   board/dfi/dfi-bt700/dsdt.aml
   board/dfi/dfi-bt700/dsdt.asl.tmp

Update the code to put temporary files in the target directory instead.

The iasl tool is quite confusing since it generates files with different
extensions and does not allow these to be individually specified. Add some
documentation to help with this.

Signed-off-by: Simon Glass 
Reviewed-by: Bin Meng 
Tested-by: Bin Meng 
[bmeng: remove dsdt.hex from 'make clean' rules and correct U-Boot spelling]
Signed-off-by: Bin Meng

efi_loader: always rebuild efi_crt0.o

2019-07-30T19:36:22+00:00

When changing the architecture without calling 'make clean' a subsequent
make fails with
lib/efi_loader/efi_crt0.o: file not recognized: File format not recognized

Force efi_crt0.o to be always rebuild.

Reported-by: Kever Yang 
Signed-off-by: Heinrich Schuchardt

dm: remove pre reloc properties in SPL and TPL device tree

2019-04-12T02:10:05+00:00

We can remove the pre reloc property in SPL and TPL device-tree:
- u-boot,dm-pre-reloc
- u-boot,dm-spl
- u-boot,dm-tpl
As only the needed node are kept by fdtgrep (1st pass).

The associated function (XXX_pre_reloc) are simple for SPL/TPL:
return always true.

Signed-off-by: Patrick Delaunay

efi_loader: fix build error for freestanding.o

2019-03-14T20:03:14+00:00

Since commit f51a226436a87 ("efi_loader: provide freestanding library") in
parallel builds errors

    lib/efi_selftest/../efi_loader/efi_freestanding.o:
    file not recognized: File truncated

occur. Obviously make cannot correctly sequence parallel builds with a
dependency like ../efi_loader/efi_freestanding.o.

Fixes: f51a226436a87 ("efi_loader: provide freestanding library")
Signed-off-by: Heinrich Schuchardt

kbuild: fix DTB .cmd source variable

2019-02-28T19:21:46+00:00

*.dts are processed using a custom command, then the C pre-processor is
run on them, then they are compiled using dtc. Thus, the dependency
files generated by both cpp and dtc reference a temporary file name
rather than the actual source file. While this information isn't used
for any purpose by the build system, and hence this causes no functional
issue, it does cause the dependency files to contain invalid and
confusing data, which is unhelpful while debugging build problems. Fix
this using sed.

Signed-off-by: Stephen Warren 
Reviewed-by: Masahiro Yamada

dtbo: Fix dtbo generation rules

2019-02-19T13:55:43+00:00

Take the first prerequisite (dts overlay file) instead of standard
input.

Signed-off-by: Michal Simek

efi_loader: do not use symbolic links

2019-02-13T08:40:06+00:00

Symbolic links are not supported on all file systems, e.g. not on FAT. So
it is not wise to use them in our source tree.

Use a qualified path to refer to lib/efi_loader/efi_freestanding.c in
scripts/Makefile.lib instead.

Reported-by: Alexander Graf 
Signed-off-by: Heinrich Schuchardt 
[agraf: Fix build with O=]
Signed-off-by: Alexander Graf

efi_loader: use freestanding library for efi apps

2019-02-13T08:40:06+00:00

GCC requires that freestanding programs provide memcpy(), memmove(),
memset(), and memcmp().

Add the library functions when building a *.efi files.

The EFI selftests might use other compilation flags. So use a symbolic
link to provide lib/efi_selftest/efi_freestanding.c and compile it
separately.

Reported-by: Alexander Graf 
Fixes: 5be444d14b38 ("efi_loader: consistent build flags for EFI applications")
Signed-off-by: Heinrich Schuchardt 
Signed-off-by: Alexander Graf

kbuild: add .SECONDARY special target to scripts/Kbuild.include

2019-01-15T20:28:53+00:00

Based on the following Linux commits:

 - 54a702f70589 ("kbuild: mark $(targets) as .SECONDARY and remove
   .PRECIOUS markers")

 - 8e9b61b293d9 ("kbuild: move .SECONDARY special target to
   Kbuild.include")

GNU Make automatically deletes intermediate files that are updated
in a chain of pattern rules.

Example 1) %.dtb.o <- %.dtb.S <- %.dtb <- %.dts
Example 2) %.o <- %.c <- %.c_shipped

A couple of makefiles mark such targets as .PRECIOUS to prevent Make
from deleting them, but the correct way is to use .SECONDARY.

  .SECONDARY
    Prerequisites of this special target are treated as intermediate
    files but are never automatically deleted.

  .PRECIOUS
    When make is interrupted during execution, it may delete the target
    file it is updating if the file was modified since make started.
    If you mark the file as precious, make will never delete the file
    if interrupted.

Both can avoid deletion of intermediate files, but the difference is
the behavior when Make is interrupted; .SECONDARY deletes the target,
but .PRECIOUS does not.

The use of .PRECIOUS is relatively rare since we do not want to keep
partially constructed (possibly corrupted) targets.

.SECONDARY with no prerequisites causes all targets to be treated as
secondary. This agrees the policy of Kbuild.

scripts/Kbuild.include seems a suitable place to add it because it is
included from almost all sub-makes.

Signed-off-by: Masahiro Yamada

efi_loader: Generate Microsoft PE format compliant images

2018-12-02T20:59:36+00:00

Per Microsoft PE Format documentation [1], PointerToSymbolTable and
NumberOfSymbols should be zero for an image in the COFF file header.
Currently U-Boot is generating *.efi images (eg: helloworld.efi) in
which these two members are not zero.

This updates the build rules to tell linker to remove the symbol
table completely so that we can generate compliant *.efi images.

[1] https://docs.microsoft.com/zh-cn/windows/desktop/Debug/pe-format

Reported-by: Heinrich Schuchardt 
Signed-off-by: Bin Meng 
Reviewed-by: Heinrich Schuchardt 
Signed-off-by: Alexander Graf