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-rw-r--r--README34
1 files changed, 34 insertions, 0 deletions
diff --git a/README b/README
index 8114f79e66..d8fcd95f94 100644
--- a/README
+++ b/README
@@ -264,6 +264,17 @@ e.g. "make cogent_mpc8xx_config". And also configure the cogent
directory according to the instructions in cogent/README.
+Sandbox Environment:
+--------------------
+
+U-Boot can be built natively to run on a Linux host using the 'sandbox'
+board. This allows feature development which is not board- or architecture-
+specific to be undertaken on a native platform. The sandbox is also used to
+run some of U-Boot's tests.
+
+See board/sandbox/sandbox/README.sandbox for more details.
+
+
Configuration Options:
----------------------
@@ -440,6 +451,12 @@ The following options need to be configured:
supported, core will start to execute uboot when wakes up.
- Generic CPU options:
+ CONFIG_SYS_GENERIC_GLOBAL_DATA
+ Defines global data is initialized in generic board board_init_f().
+ If this macro is defined, global data is created and cleared in
+ generic board board_init_f(). Without this macro, architecture/board
+ should initialize global data before calling board_init_f().
+
CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN
Defines the endianess of the CPU. Implementation of those
@@ -740,6 +757,10 @@ The following options need to be configured:
boot loader that has already initialized the UART. Define this
variable to flush the UART at init time.
+ CONFIG_SERIAL_HW_FLOW_CONTROL
+
+ Define this variable to enable hw flow control in serial driver.
+ Current user of this option is drivers/serial/nsl16550.c driver
- Console Interface:
Depending on board, define exactly one serial port
@@ -3297,6 +3318,10 @@ FIT uImage format:
supports MMC, NAND and YMODEM loading of U-Boot and NAND
NAND loading of the Linux Kernel.
+ CONFIG_SPL_OS_BOOT
+ Enable booting directly to an OS from SPL.
+ See also: doc/README.falcon
+
CONFIG_SPL_DISPLAY_PRINT
For ARM, enable an optional function to print more information
about the running system.
@@ -3372,6 +3397,10 @@ FIT uImage format:
Support for NAND boot using simple NAND drivers that
expose the cmd_ctrl() interface.
+ CONFIG_SPL_MTD_SUPPORT
+ Support for the MTD subsystem within SPL. Useful for
+ environment on NAND support within SPL.
+
CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT
Set for the SPL on PPC mpc8xxx targets, support for
drivers/ddr/fsl/libddr.o in SPL binary.
@@ -4534,6 +4563,11 @@ Low Level (hardware related) configuration options:
- CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC:
Enables the RTC32K OSC on AM33xx based plattforms
+- CONFIG_SYS_NAND_NO_SUBPAGE_WRITE
+ Option to disable subpage write in NAND driver
+ driver that uses this:
+ drivers/mtd/nand/davinci_nand.c
+
Freescale QE/FMAN Firmware Support:
-----------------------------------
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