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kconfig: support board-specific defconfig

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The current defconfigs are BIOS-specific which makes it difficult to maintain
multiple defconfigs for boards running the same BIOS.

This patch re-organizes the defconfigs to be board-specific. A command line
option BOARD is introduced to specify a board on which the current build targets
at. The original PLATFORM is kept for backward compatibility which redirects to
apl-mrb and nuc6cayh for sbl and uefi, respectively.

The getting started guide is also updated accordingly.

v1 -> v2:

* Rewrite 'up2' to 'UP2'.

Tracked-On: #1588
Signed-off-by: Junjie Mao <junjie.mao@intel.com>
Reviewed-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Junjie Mao
2018-10-19 21:54:26 +08:00
committed by lijinxia
parent 8bde372c32
commit b9d54f4ab3
8 changed files with 77 additions and 26 deletions
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35
scripts/kconfig/defconfig.py
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@@ -12,28 +12,45 @@ import sys, os
import kconfiglib
def usage():
sys.stdout.write("%s: <Kconfig file> <defconfig> <path to .config>\n" % sys.argv[0])
sys.stdout.write("%s: <Kconfig file> <path to .config>\n" % sys.argv[0])
def main():
if len(sys.argv) < 4:
if len(sys.argv) < 3:
usage()
sys.exit(1)
target_board = os.environ['BOARD']
kconfig_path = sys.argv[1]
if not os.path.isfile(kconfig_path):
sys.stderr.write("Cannot find file %s\n" % kconfig_path)
sys.exit(1)
defconfig_path = sys.argv[2]
if not os.path.isfile(defconfig_path):
sys.stderr.write("Cannot find file %s\n" % defconfig_path)
kconfig = kconfiglib.Kconfig(kconfig_path)
defconfig_path = kconfig.defconfig_filename
if not defconfig_path or not os.path.isfile(defconfig_path):
sys.stderr.write("No defconfig found for board %s.\n" % target_board)
sys.exit(1)
sys.stdout.write("Default configuration based on %s.\n" % defconfig_path)
kconfig = kconfiglib.Kconfig(kconfig_path)
kconfig.load_config(defconfig_path)
kconfig.write_config(sys.argv[3])
sys.stdout.write("Configuration written to %s.\n" % sys.argv[3])
config_path = sys.argv[2]
if os.path.isfile(config_path):
# No need to change .config if it is already equivalent to the specified
# default.
kconfig_current = kconfiglib.Kconfig(kconfig_path)
kconfig_current.load_config(config_path)
same_config = True
for sym in kconfig_current.syms:
if kconfig_current.syms[sym].str_value != kconfig.syms[sym].str_value:
same_config = False
break
if same_config:
sys.exit(0)
sys.stdout.write("Default configuration based on %s.\n" % defconfig_path)
kconfig.write_config(config_path)
sys.stdout.write("Configuration written to %s.\n" % config_path)
if __name__ == "__main__":
main()