diff --git a/Makefile b/Makefile index 11efc41804..9ec2e12a06 100644 --- a/Makefile +++ b/Makefile @@ -2439,11 +2439,13 @@ endif $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost quiet_cmd_genenv = GENENV $@ -cmd_genenv = $(OBJCOPY) --dump-section .rodata.default_environment=$@ env/common.o; \ - sed --in-place -e 's/\x00/\x0A/g' $@; sed --in-place -e '/^\s*$$/d' $@; \ - sort --field-separator== -k1,1 --stable $@ -o $@ +cmd_genenv = \ + $(objtree)/tools/printinitialenv | \ + sed -e '/^\s*$$/d' | \ + sort --field-separator== -k1,1 --stable -o $@ -u-boot-initial-env: u-boot.bin +u-boot-initial-env: $(env_h) FORCE + $(Q)$(MAKE) $(build)=tools $(objtree)/tools/printinitialenv $(call if_changed,genenv) # Consistency checks diff --git a/tools/.gitignore b/tools/.gitignore index d3a93ff294..28e8ce2a07 100644 --- a/tools/.gitignore +++ b/tools/.gitignore @@ -28,6 +28,7 @@ /mxsboot /ncb /prelink-riscv +/printinitialenv /proftool /relocate-rela /spl_size_limit diff --git a/tools/Makefile b/tools/Makefile index 26be0a7ba2..80bc62befc 100644 --- a/tools/Makefile +++ b/tools/Makefile @@ -275,6 +275,10 @@ clean-dirs := lib common always := $(hostprogs-y) +# Host tool to dump the currently configured default environment, +# build it on demand, i.e. not add it to 'always'. +hostprogs-y += printinitialenv + # Generated LCD/video logo LOGO_H = $(objtree)/include/bmp_logo.h LOGO_DATA_H = $(objtree)/include/bmp_logo_data.h diff --git a/tools/printinitialenv.c b/tools/printinitialenv.c new file mode 100644 index 0000000000..c58b234d67 --- /dev/null +++ b/tools/printinitialenv.c @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2022 + * Max Krummenacher, Toradex + * + * Snippets taken from tools/env/fw_env.c + * + * This prints the list of default environment variables as currently + * configured. + * + */ + +#include + +/* Pull in the current config to define the default environment */ +#include + +#ifndef __ASSEMBLY__ +#define __ASSEMBLY__ /* get only #defines from config.h */ +#include +#undef __ASSEMBLY__ +#else +#include +#endif + +#define DEFAULT_ENV_INSTANCE_STATIC +#include +#include + +int main(void) +{ + char *env, *nxt; + + for (env = default_environment; *env; env = nxt + 1) { + for (nxt = env; *nxt; ++nxt) { + if (nxt >= &default_environment[sizeof(default_environment)]) { + fprintf(stderr, "## Error: environment not terminated\n"); + return -1; + } + } + printf("%s\n", env); + } + return 0; +}