mtd, spi: Add MTD layer driver

[karo-tx-uboot.git] / README

diff --git a/README b/README
index ace6d76d06c3547db2aaf1cd6d7d8295024863e2..09a15ab86333207f48b88d7bdba16cfec7cb39cd 100644 (file)
--- a/README
+++ b/README
@@ -1087,8 +1087,6 @@ The following options need to be configured:
                CONFIG_AUTOBOOT_PROMPT
                CONFIG_AUTOBOOT_DELAY_STR
                CONFIG_AUTOBOOT_STOP_STR
-               CONFIG_AUTOBOOT_DELAY_STR2
-               CONFIG_AUTOBOOT_STOP_STR2
                CONFIG_ZERO_BOOTDELAY_CHECK
                CONFIG_RESET_TO_RETRY
 
@@ -1160,9 +1158,7 @@ The following options need to be configured:
                Monitor commands can be included or excluded
                from the build by using the #include files
                <config_cmd_all.h> and #undef'ing unwanted
-               commands, or using <config_cmd_default.h>
-               and augmenting with additional #define's
-               for wanted commands.
+               commands, or adding #define's for wanted commands.
 
                The default command configuration includes all commands
                except those marked below with a "*".
@@ -3160,6 +3156,19 @@ 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
 
@@ -3202,6 +3211,15 @@ CBFS (Coreboot Filesystem) support
                memories can be connected with a given cs line.
                Currently Xilinx Zynq qspi supports these type of connections.
 
+               CONFIG_SPI_FLASH_MTD            spi-flash MTD layer
+
+               Define this option to use mtd support for spi flash layer, this
+               adapter is for translating mtd_read/mtd_write commands into
+               spi_flash_read/spi_flash_write commands. It is not intended to
+               use it within sf_cmd or the SPI flash subsystem. Such an adapter
+               is needed for subsystems like UBI which can only operate on top
+               of the MTD layer.
+
 - SystemACE Support:
                CONFIG_SYSTEMACE