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authorSimon Glass <sjg@chromium.org>2021-07-22 06:35:52 +0300
committerSimon Glass <sjg@chromium.org>2021-08-01 18:05:24 +0300
commita8ba35bf2335500013131208f4e90df9f5f936d4 (patch)
tree8589567c9a587513034d570122e1b72ddd25ae42 /doc
parent5c72c0e0d2bb5ff8aa38b4cebdb4e1d4dd311b5d (diff)
downloadu-boot-a8ba35bf2335500013131208f4e90df9f5f936d4.tar.xz
doc: Fix up outdated moveconfig docs
The examples here are a bit messed up since the command does not match the documentation. Use a different example instead. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'doc')
-rw-r--r--doc/develop/moveconfig.rst58
1 files changed, 22 insertions, 36 deletions
diff --git a/doc/develop/moveconfig.rst b/doc/develop/moveconfig.rst
index aaa155e8c7..dcd4d927e4 100644
--- a/doc/develop/moveconfig.rst
+++ b/doc/develop/moveconfig.rst
@@ -144,50 +144,36 @@ This tool can help find such configs. To use it, first build a database::
Then try to query it::
- ./tools/moveconfig.py -i CONFIG_CMD_IRQ
- CONFIG_CMD_IRQ found in 311/2384 defconfigs
- 44 : CONFIG_SYS_FSL_ERRATUM_IFC_A002769
- 41 : CONFIG_SYS_FSL_ERRATUM_A007075
- 31 : CONFIG_SYS_FSL_DDR_VER_44
- 28 : CONFIG_ARCH_P1010
- 28 : CONFIG_SYS_FSL_ERRATUM_P1010_A003549
- 28 : CONFIG_SYS_FSL_ERRATUM_SEC_A003571
- 28 : CONFIG_SYS_FSL_ERRATUM_IFC_A003399
- 25 : CONFIG_SYS_FSL_ERRATUM_A008044
- 22 : CONFIG_ARCH_P1020
- 21 : CONFIG_SYS_FSL_DDR_VER_46
- 20 : CONFIG_MAX_PIRQ_LINKS
- 20 : CONFIG_HPET_ADDRESS
- 20 : CONFIG_X86
- 20 : CONFIG_PCIE_ECAM_SIZE
- 20 : CONFIG_IRQ_SLOT_COUNT
- 20 : CONFIG_I8259_PIC
- 20 : CONFIG_CPU_ADDR_BITS
- 20 : CONFIG_RAMBASE
- 20 : CONFIG_SYS_FSL_ERRATUM_A005871
- 20 : CONFIG_PCIE_ECAM_BASE
- 20 : CONFIG_X86_TSC_TIMER
- 20 : CONFIG_I8254_TIMER
- 20 : CONFIG_CMD_GETTIME
- 19 : CONFIG_SYS_FSL_ERRATUM_A005812
- 18 : CONFIG_X86_RUN_32BIT
- 17 : CONFIG_CMD_CHIP_CONFIG
- ...
-
-This shows a list of config options which might imply CONFIG_CMD_EEPROM along
+ ./tools/moveconfig.py -i CONFIG_I8042_KEYB
+ CONFIG_I8042_KEYB found in 33/5155 defconfigs
+ 28 : CONFIG_X86
+ 28 : CONFIG_SA_PCIEX_LENGTH
+ 28 : CONFIG_HPET_ADDRESS
+ 28 : CONFIG_MAX_PIRQ_LINKS
+ 28 : CONFIG_I8254_TIMER
+ 28 : CONFIG_I8259_PIC
+ 28 : CONFIG_RAMBASE
+ 28 : CONFIG_IRQ_SLOT_COUNT
+ 28 : CONFIG_PCIE_ECAM_SIZE
+ 28 : CONFIG_APIC
+ ...
+
+This shows a list of config options which might imply CONFIG_I8042_KEYB along
with how many defconfigs they cover. From this you can see that CONFIG_X86
-implies CONFIG_CMD_EEPROM. Therefore, instead of adding CONFIG_CMD_EEPROM to
+generally implies CONFIG_I8042_KEYB but not always (28 out of 35). Therefore,
+instead of adding CONFIG_I8042_KEYB to
the defconfig of every x86 board, you could add a single imply line to the
-Kconfig file:
+Kconfig file::
config X86
bool "x86 architecture"
...
imply CMD_EEPROM
-That will cover 20 defconfigs. Many of the options listed are not suitable as
-they are not related. E.g. it would be odd for CONFIG_CMD_GETTIME to imply
-CMD_EEPROM.
+That will cover 28 defconfigs and you can perhaps find another condition that
+indicates that CONFIG_I8042_KEYB is not needed for the remaining 5 boards. Many
+of the options listed are not suitable as they are not related. E.g. it would be
+odd for CONFIG_RAMBASE to imply CONFIG_I8042_KEYB.
Using this search you can reduce the size of moveconfig patches.