Create configuration option for restricted ns16550 functions

[platform/kernel/u-boot.git] / README

diff --git a/README b/README
index 522471c..48d3f6d 100644 (file)
--- a/README
+++ b/README
@@ -484,6 +484,14 @@ The following options need to be configured:
                CONFIG_SYS_BAUDRATE_TABLE, see below.
                CONFIG_SYS_BRGCLK_PRESCALE, baudrate prescale
 
+- Console Rx buffer length
+               With CONFIG_SYS_SMC_RXBUFLEN it is possible to define
+               the maximum receive buffer length for the SMC.
+               This option is actual only for 82xx and 8xx possible.
+               If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE
+               must be defined, to setup the maximum idle timeout for
+               the SMC.
+
 - Interrupt driven serial port input:
                CONFIG_SERIAL_SOFTWARE_FIFO
 
@@ -600,7 +608,7 @@ The following options need to be configured:
                CONFIG_CMD_ECHO           echo arguments
                CONFIG_CMD_EEPROM       * EEPROM read/write support
                CONFIG_CMD_ELF          * bootelf, bootvx
-               CONFIG_CMD_ENV            saveenv
+               CONFIG_CMD_SAVEENV        saveenv
                CONFIG_CMD_FDC          * Floppy Disk Support
                CONFIG_CMD_FAT          * FAT partition support
                CONFIG_CMD_FDOS         * Dos diskette Support
@@ -2450,6 +2458,13 @@ use the "saveenv" command to store a valid environment.
 - CONFIG_SYS_64BIT_STRTOUL:
                Adds simple_strtoull that returns a 64bit value
 
+- CONFIG_NS16550_MIN_FUNCTIONS:
+               Define this if you desire to only have use of the NS16550_init
+               and NS16550_putc functions for the serial driver located at
+               drivers/serial/ns16550.c.  This option is useful for saving
+               space for already greatly restricted images, including but not
+               limited to NAND_SPL configurations.
+
 Low Level (hardware related) configuration options:
 ---------------------------------------------------
 
@@ -2595,6 +2610,10 @@ Low Level (hardware related) configuration options:
   CONFIG_SYS_POCMR2_MASK_ATTRIB: (MPC826x only)
                Overrides the default PCI memory map in cpu/mpc8260/pci.c if set.
 
+- CONFIG_PCI_DISABLE_PCIE:
+               Disable PCI-Express on systems where it is supported but not
+               required.
+
 - CONFIG_SPD_EEPROM
                Get DDR timing information from an I2C EEPROM. Common
                with pluggable memory modules such as SODIMMs