mtd, spi: Add MTD layer driver

[karo-tx-uboot.git] / README

diff --git a/README b/README
index 42cd55953bc1e96c3cc6cf515686ae2295590ee3..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 "*".
@@ -2220,18 +2216,6 @@ CBFS (Coreboot Filesystem) support
                Some PHY like Intel LXT971A need extra delay after
                command issued before MII status register can be read
 
-- Ethernet address:
-               CONFIG_ETHADDR
-               CONFIG_ETH1ADDR
-               CONFIG_ETH2ADDR
-               CONFIG_ETH3ADDR
-               CONFIG_ETH4ADDR
-               CONFIG_ETH5ADDR
-
-               Define a default value for Ethernet address to use
-               for the respective Ethernet interface, in case this
-               is not determined automatically.
-
 - IP address:
                CONFIG_IPADDR
 
@@ -2997,8 +2981,8 @@ CBFS (Coreboot Filesystem) support
                completely disabled. Anybody can change or delete
                these parameters.
 
-               Alternatively, if you #define _both_ CONFIG_ETHADDR
-               _and_ CONFIG_OVERWRITE_ETHADDR_ONCE, a default
+               Alternatively, if you define _both_ an ethaddr in the
+               default env _and_ CONFIG_OVERWRITE_ETHADDR_ONCE, a default
                Ethernet address is installed in the environment,
                which can be changed exactly ONCE by the user. [The
                serial# is unaffected by this, i. e. it remains
@@ -3172,6 +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
 
@@ -3214,6 +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
 
@@ -4275,6 +4281,10 @@ Configuration Settings:
                list, simply add an entry for the same variable name to the
                ".flags" variable.
 
+       If CONFIG_REGEX is defined, the variable_name above is evaluated as a
+       regular expression. This allows multiple variables to define the same
+       flags without explicitly listing them for each variable.
+
 - CONFIG_ENV_ACCESS_IGNORE_FORCE
        If defined, don't allow the -f switch to env set override variable
        access flags.
@@ -5673,6 +5683,10 @@ override any association in the static list. You can define
 CONFIG_ENV_CALLBACK_LIST_DEFAULT to a list (string) to define the
 ".callbacks" environment variable in the default or embedded environment.
 
+If CONFIG_REGEX is defined, the variable_name above is evaluated as a
+regular expression. This allows multiple variables to be connected to
+the same callback without explicitly listing them all out.
+
 
 Command Line Parsing:
 =====================