[coreboot] Re: How can I set up a userspace test for coreboot code in 2023?

[Nico Huber]

Hi Keith,

On 02.04.23 15:33, Keith Hui wrote:
> Here is the command line I figured would work, gathered with "make -n":
>
> gcc -Isrc -Isrc/include -Isrc/commonlib/include
> -Isrc/commonlib/bsd/include -Ibuild -I3rdparty/vboot/firmware/include
> -include src/include/kconfig.h -include src/include/rules.h -include
> src/commonlib/bsd/include/commonlib/bsd/compiler.h -I3rdparty
> -D__BUILD_DIR__="build" -Isrc/arch/x86/include -D__ARCH_x86_32__
> -Isrc/device/oprom/include -nostdinc -pipe -g -std=gnu11 -nostdlib
> -Wall -Wundef -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings
> -Wredundant-decls -Wno-trigraphs -Wimplicit-fallthrough -Wshadow
> -Wdate-time -Wtype-limits -Wvla -Wold-style-definition -Wdangling-else
> -Wmissing-include-dirs -fno-common -ffreestanding -fno-builtin
> -fomit-frame-pointer -fstrict-aliasing -ffunction-sections
> -fdata-sections -fno-pie -Wno-packed-not-aligned -fconserve-stack
> -Wnull-dereference -Wreturn-type -Wlogical-op -Wduplicated-cond
> -Wno-unused-but-set-variable -Werror -Os -Wno-address-of-packed-member
>  -m32  -fuse-ld=bfd -fno-stack-protector -Wl,--build-id=none
> -fno-delete-null-pointer-checks -Wlogical-op -march=i686 -mno-mmx
> --param asan-globals=0 -D__RAMSTAGE__ -include build/config.h
> src/northbridge/intel/i440bx/raminit.c
> src/northbridge/intel/i440bx/raminittest.c -o raminittest2023
>
> The C test code is attached.

I'm seeing two errors, smbus_read_byte() not being declared and
<unistd.h> missing.

For the former, you should build with -D__ROMSTAGE__ (not R*A*MSTAGE).

For the latter, I guess it might be better to compile `raminit.c` with
the coreboot include paths and your `raminittest.c` with your host
headers, i.e. *without* `-nostdinc` and coreboot paths. If that actually
works depends a lot on details; it would be best to compile everything
with the host's standard headers and only use those coreboot headers
that are coreboot specific. However, both kinds of headers are mixed
in coreboot's directory structure and some headers in coreboot that have
standard names are actually not standard :-/

With separate compilation, I get to

fatal error: standalonetest.h: No such file or directory

;)

Cheers,
Nico