some time ago, i wrote some simple shell scripts that scanned the
kernel source tree and identified oddities in configuration files --
things like Kconfig variables that were defined but never used, macros
that were being tested but were never set, etc. i just tweaked one of
those scripts to scan the u-boot tree to locate CONFIG_CMD_* variables
that were being tested, but weren't "#defined" anywhere. nothing
wrong with that, most of them are still documented and i've added at
the bottom the fairly short output of those u-boot variables as well
as their occurrence in the tree.
they fall into three categories, with examples. here's one where
there's no #define, but the variable is at least documented so no
problem:
===== CONFIG_CMD_DS4510_RST
drivers/misc/ds4510.c:#ifdef CONFIG_CMD_DS4510_RST
drivers/misc/ds4510.c:#ifdef CONFIG_CMD_DS4510_RST
drivers/misc/ds4510.c:#ifdef CONFIG_CMD_DS4510_RST
README: CONFIG_CMD_DS4510_RST * ds4510 I2C rst command
here's one where there's no #define, and apparently no
documentation anywhere:
===== CONFIG_CMD_NAND_YAFFS
common/cmd_nand.c:#ifdef CONFIG_CMD_NAND_YAFFS
common/cmd_nand.c:#ifdef CONFIG_CMD_NAND_YAFFS
drivers/mtd/nand/nand_util.c:#ifdef CONFIG_CMD_NAND_YAFFS
drivers/mtd/nand/nand_util.c:#ifdef CONFIG_CMD_NAND_YAFFS
include/configs/M54418TWR.h:#undef CONFIG_CMD_NAND_YAFFS
finally, here's a case that looks like a reference to a command that
was never added and thus represents pointless code:
===== CONFIG_CMD_FUSE
arch/powerpc/cpu/mpc512x/iim.c:#ifdef CONFIG_CMD_FUSE
arch/powerpc/cpu/mpc512x/iim.c:#endif /* CONFIG_CMD_FUSE */
board/esd/mecp5123/mecp5123.c:#if defined(CONFIG_IIM) ||
defined(CONFIG_CMD_FUSE)
board/pdm360ng/pdm360ng.c:#if defined(CONFIG_IIM) || defined(CONFIG_CMD_FUSE)
board/davedenx/aria/aria.c:#if defined(CONFIG_IIM) || defined(CONFIG_CMD_FUSE)
board/freescale/mpc5121ads/mpc5121ads.c:#if defined(CONFIG_IIM) ||
defined(CONFIG_CMD_FUSE)
include/configs/mecp5123.h:#undef CONFIG_CMD_FUSE
include/configs/aria.h:#undef CONFIG_CMD_FUSE
include/configs/mpc5121ads.h:#undef CONFIG_CMD_FUSE
here's the full list -- not all that long:
===== CONFIG_CMD_DS4510_MEM
drivers/misc/ds4510.c:#ifdef CONFIG_CMD_DS4510_MEM
drivers/misc/ds4510.c:#ifdef CONFIG_CMD_DS4510_MEM
drivers/misc/ds4510.c:#ifdef CONFIG_CMD_DS4510_MEM
drivers/misc/ds4510.c:#ifdef CONFIG_CMD_DS4510_MEM
drivers/misc/ds4510.c:#ifdef CONFIG_CMD_DS4510_MEM
README: CONFIG_CMD_DS4510_MEM * ds4510 I2C eeprom/sram commansd
===== CONFIG_CMD_DS4510_RST
drivers/misc/ds4510.c:#ifdef CONFIG_CMD_DS4510_RST
drivers/misc/ds4510.c:#ifdef CONFIG_CMD_DS4510_RST
drivers/misc/ds4510.c:#ifdef CONFIG_CMD_DS4510_RST
README: CONFIG_CMD_DS4510_RST * ds4510 I2C rst command
===== CONFIG_CMD_ENV_CALLBACK
common/cmd_nvedit.c:#if defined(CONFIG_CMD_ENV_CALLBACK)
common/cmd_nvedit.c:#if defined(CONFIG_CMD_ENV_CALLBACK)
common/cmd_nvedit.c:#if defined(CONFIG_CMD_ENV_CALLBACK)
README: CONFIG_CMD_ENV_CALLBACK * display details about env callbacks
===== CONFIG_CMD_ENV_FLAGS
common/cmd_nvedit.c:#if defined(CONFIG_CMD_ENV_FLAGS)
common/cmd_nvedit.c:#if defined(CONFIG_CMD_ENV_FLAGS)
common/cmd_nvedit.c:#if defined(CONFIG_CMD_ENV_FLAGS)
common/env_flags.c:#ifdef CONFIG_CMD_ENV_FLAGS
common/env_flags.c:#endif /* CONFIG_CMD_ENV_FLAGS */
include/env_flags.h:#ifdef CONFIG_CMD_ENV_FLAGS
README: CONFIG_CMD_ENV_FLAGS * display details about env flags
===== CONFIG_CMD_FUSE
arch/powerpc/cpu/mpc512x/iim.c:#ifdef CONFIG_CMD_FUSE
arch/powerpc/cpu/mpc512x/iim.c:#endif /* CONFIG_CMD_FUSE */
board/esd/mecp5123/mecp5123.c:#if defined(CONFIG_IIM) ||
defined(CONFIG_CMD_FUSE)
board/pdm360ng/pdm360ng.c:#if defined(CONFIG_IIM) || defined(CONFIG_CMD_FUSE)
board/davedenx/aria/aria.c:#if defined(CONFIG_IIM) || defined(CONFIG_CMD_FUSE)
board/freescale/mpc5121ads/mpc5121ads.c:#if defined(CONFIG_IIM) ||
defined(CONFIG_CMD_FUSE)
include/configs/mecp5123.h:#undef CONFIG_CMD_FUSE
include/configs/aria.h:#undef CONFIG_CMD_FUSE
include/configs/mpc5121ads.h:#undef CONFIG_CMD_FUSE
===== CONFIG_CMD_LINK_LOCAL
common/cmd_net.c:#if defined(CONFIG_CMD_LINK_LOCAL)
common/cmd_net.c:#endif /* CONFIG_CMD_LINK_LOCAL */
doc/README.link-local:When CONFIG_CMD_LINK_LOCAL is defined in the
board config file,
doc/README.link-local:by env variables. It depends on
CONFIG_CMD_LINK_LOCAL, CONFIG_CMD_DHCP,
include/config_uncmd_spl.h:#undef CONFIG_CMD_LINK_LOCAL
include/common.h: defined(CONFIG_CMD_LINK_LOCAL)
lib/Makefile:COBJS-$(CONFIG_CMD_LINK_LOCAL) += rand.o
net/arp.c:#ifdef CONFIG_CMD_LINK_LOCAL
net/net.c:#if defined(CONFIG_CMD_LINK_LOCAL)
net/link_local.h:#if defined(CONFIG_CMD_LINK_LOCAL)
net/Makefile:COBJS-$(CONFIG_CMD_LINK_LOCAL) += link_local.o
README: CONFIG_CMD_LINK_LOCAL * link-local IP address
auto-configuration
===== CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES
common/cmd_mtdparts.c:#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
common/cmd_mtdparts.c:#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
common/cmd_mtdparts.c:#else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
common/cmd_mtdparts.c:#endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
===== CONFIG_CMD_MTDPARTS_SPREAD
common/cmd_mtdparts.c:#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
common/cmd_mtdparts.c:#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
common/cmd_mtdparts.c:#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
common/cmd_mtdparts.c:#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
common/cmd_mtdparts.c:#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
common/cmd_mtdparts.c:#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
common/cmd_mtdparts.c:#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
common/cmd_mtdparts.c:#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
common/cmd_mtdparts.c:#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
drivers/mtd/mtdcore.c:#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
drivers/mtd/mtdcore.c:#endif /* defined(CONFIG_CMD_MTDPARTS_SPREAD) */
===== CONFIG_CMD_NAND_TORTURE
common/cmd_nand.c:#ifdef CONFIG_CMD_NAND_TORTURE
common/cmd_nand.c:#ifdef CONFIG_CMD_NAND_TORTURE
doc/README.nand: CONFIG_CMD_NAND_TORTURE
doc/README.nand: Enabled by the CONFIG_CMD_NAND_TORTURE configuration option.
drivers/mtd/nand/nand_util.c:#ifdef CONFIG_CMD_NAND_TORTURE
===== CONFIG_CMD_NAND_TRIMFFS
common/cmd_nand.c:#ifdef CONFIG_CMD_NAND_TRIMFFS
common/cmd_nand.c:#ifdef CONFIG_CMD_NAND_TRIMFFS
doc/README.nand: Enabled by the CONFIG_CMD_NAND_TRIMFFS macro.
This command will write to
drivers/mtd/nand/nand_util.c:#ifdef CONFIG_CMD_NAND_TRIMFFS
drivers/mtd/nand/nand_util.c:#ifdef CONFIG_CMD_NAND_TRIMFFS
===== CONFIG_CMD_NAND_YAFFS
common/cmd_nand.c:#ifdef CONFIG_CMD_NAND_YAFFS
common/cmd_nand.c:#ifdef CONFIG_CMD_NAND_YAFFS
drivers/mtd/nand/nand_util.c:#ifdef CONFIG_CMD_NAND_YAFFS
drivers/mtd/nand/nand_util.c:#ifdef CONFIG_CMD_NAND_YAFFS
include/configs/M54418TWR.h:#undef CONFIG_CMD_NAND_YAFFS
===== CONFIG_CMD_SF_TEST
common/cmd_sf.c:#ifdef CONFIG_CMD_SF_TEST
common/cmd_sf.c:#endif /* CONFIG_CMD_SF_TEST */
common/cmd_sf.c:#ifdef CONFIG_CMD_SF_TEST
common/cmd_sf.c:#ifdef CONFIG_CMD_SF_TEST
README: CONFIG_CMD_SF_TEST
===== CONFIG_CMD_TFTPSRV
common/cmd_net.c:#ifdef CONFIG_CMD_TFTPSRV
include/config_uncmd_spl.h:#undef CONFIG_CMD_TFTPSRV
net/tftp.c:#ifdef CONFIG_CMD_TFTPSRV
net/tftp.c:#ifdef CONFIG_CMD_TFTPSRV
net/tftp.c:#endif /* CONFIG_CMD_TFTPSRV */
net/net.c:#ifdef CONFIG_CMD_TFTPSRV
net/tftp.h:#ifdef CONFIG_CMD_TFTPSRV
README: CONFIG_CMD_TFTPSRV * TFTP transfer in server mode
===== CONFIG_CMD_TIMER
common/cmd_misc.c:#ifdef CONFIG_CMD_TIMER
README: CONFIG_CMD_TIMER * access to the system tick timer
rday
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