lib.sh: more unified config handling

replace it with logic that simply uses "." to load
files directly. for this, "vcfg" is added as a variable
in coreboot target.cfg files, referring to a directory
in config/vendor/ containing a file named pkg.cfg, and
this file then contains the same variables as the
erstwhile config/vendor/sources

config/git files are now directories, also containing
pkg.cfg files each with the same variables as before,
such as repository link and commit hash

this change results in a noticeable reduction in code
complexity within the build system.

unified reading of config files: new function setcfg()
added to lib.sh

setcfg checks if a config exists. if a 2nd argument is
passed, it is used as a return value for eval, otherwise
a string calling err is passed. setcfg output is passed
through eval, to set strings based on config; eval must
be used, so that the variables are set within the same
scope, otherwise they'd be set within setcfg which could
lead to some whacky results.

there's still a bit more more to do, but this single change
results in a substantial reduction in code complexity.

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/config/vendor/e6400/pkg.cfg b/config/vendor/e6400/pkg.cfg
new file mode 100644
index 00000000..5274f51b
--- /dev/null
+++ b/config/vendor/e6400/pkg.cfg
@@ -0,0 +1,5 @@
+E6400_VGA_DL_hash="6217d5fce2291d15bb0649fd2faaeb78e4c48962b07a2bea6af60466bfdc5f233af0d077c2c6e71dd96047bdbb1f612324cef0a5e728ba9a9ec5c69a4022cd8d"
+E6400_VGA_DL_url="https://dl.dell.com/FOLDER01530530M/1/E6400A34.exe"
+E6400_VGA_DL_url_bkup="https://web.archive.org/web/20230506014903/https://dl.dell.com/FOLDER01530530M/1/E6400A34.exe"
+E6400_VGA_offset="274451"
+E6400_VGA_romname="mod_21.bin"