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| author | Chris Packham <judge.packham@gmail.com> | 2015-06-19 20:25:59 +1200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-06-19 16:46:50 -0400 |
| commit | 3b10cf120befe9c2e938a7d4e04eb0b545ee347a (patch) | |
| tree | 1c8d74dc492181409795c1c82c23a9d41e832257 /README | |
| parent | 334bbb387f2d369f4cf0b28173f0764c8316fd5b (diff) | |
| download | u-boot-3b10cf120befe9c2e938a7d4e04eb0b545ee347a.tar.gz | |
README: Describe CONFIG_SYS_NO_FLASH
Unlike most configuration options defining this actually disables
support for a feature (parallel flash). Eventually the logic behind this
should probably be flipped so that '#ifndef CONFIG_SYS_NO_FLASH' becomes
'#ifdef CONFIG_HAS_PARALLEL_FLASH' but for now lets document the
existing behaviour.
Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'README')
| -rw-r--r-- | README | 13 |
1 files changed, 13 insertions, 0 deletions
@@ -3037,6 +3037,19 @@ CBFS (Coreboot Filesystem) support this is instead controlled by the value of /config/load-environment. +- Parallel Flash support: + CONFIG_SYS_NO_FLASH + + Traditionally U-boot was run on systems with parallel NOR + flash. This option is used to disable support for parallel NOR + flash. This option should be defined if the board does not have + parallel flash. + + If this option is not defined one of the generic flash drivers + (e.g. CONFIG_FLASH_CFI_DRIVER or CONFIG_ST_SMI) must be + selected or the board must provide an implementation of the + flash API (see include/flash.h). + - DataFlash Support: CONFIG_HAS_DATAFLASH |