include/bitfield.h: Assure new bitfield value doesn't touch unwanted bits

[karo-tx-uboot.git] / README

diff --git a/README b/README
index 09a15ab86333207f48b88d7bdba16cfec7cb39cd..fe21bbf9824a72ace81215579f4028c5f91d1802 100644 (file)
--- a/README
+++ b/README
@@ -1781,7 +1781,7 @@ The following options need to be configured:
                key for the Replay Protection Memory Block partition in eMMC.
 
 - USB Device Firmware Update (DFU) class support:
-               CONFIG_DFU_FUNCTION
+               CONFIG_USB_FUNCTION_DFU
                This enables the USB portion of the DFU USB class
 
                CONFIG_CMD_DFU
@@ -1826,6 +1826,9 @@ The following options need to be configured:
                sending again an USB request to the device.
 
 - USB Device Android Fastboot support:
+               CONFIG_USB_FUNCTION_FASTBOOT
+               This enables the USB part of the fastboot gadget
+
                CONFIG_CMD_FASTBOOT
                This enables the command "fastboot" which enables the Android
                fastboot mode for the platform's USB device. Fastboot is a USB
@@ -1837,12 +1840,12 @@ The following options need to be configured:
                This enables support for booting images which use the Android
                image format header.
 
-               CONFIG_USB_FASTBOOT_BUF_ADDR
+               CONFIG_FASTBOOT_BUF_ADDR
                The fastboot protocol requires a large memory buffer for
                downloads. Define this to the starting RAM address to use for
                downloaded images.
 
-               CONFIG_USB_FASTBOOT_BUF_SIZE
+               CONFIG_FASTBOOT_BUF_SIZE
                The fastboot protocol requires a large memory buffer for
                downloads. This buffer should be as large as possible for a
                platform. Define this to the size available RAM for fastboot.
@@ -3200,26 +3203,12 @@ CBFS (Coreboot Filesystem) support
                Define this option to include a destructive SPI flash
                test ('sf test').
 
-               CONFIG_SPI_FLASH_BAR            Ban/Extended Addr Reg
-
-               Define this option to use the Bank addr/Extended addr
-               support on SPI flashes which has size > 16Mbytes.
-
                CONFIG_SF_DUAL_FLASH            Dual flash memories
 
                Define this option to use dual flash support where two flash
                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
 
@@ -5198,6 +5187,33 @@ within that device.
        normal addressable memory via the LBC. CONFIG_SYS_LS_MC_FW_ADDR is the
        virtual address in NOR flash.
 
+Freescale Layerscape Debug Server Support:
+-------------------------------------------
+The Freescale Layerscape Debug Server Support supports the loading of
+"Debug Server firmware" and triggering SP boot-rom.
+This firmware often needs to be loaded during U-Boot booting.
+
+- CONFIG_FSL_DEBUG_SERVER
+       Enable the Debug Server for Layerscape SoCs.
+
+- CONFIG_SYS_DEBUG_SERVER_DRAM_BLOCK_MIN_SIZE
+       Define minimum DDR size required for debug server image
+
+- CONFIG_SYS_MEM_TOP_HIDE_MIN
+       Define minimum DDR size to be hided from top of the DDR memory
+
+Reproducible builds
+-------------------
+
+In order to achieve reproducible builds, timestamps used in the U-Boot build
+process have to be set to a fixed value.
+
+This is done using the SOURCE_DATE_EPOCH environment variable.
+SOURCE_DATE_EPOCH is to be set on the build host's shell, not as a configuration
+option for U-Boot or an environment variable in U-Boot.
+
+SOURCE_DATE_EPOCH should be set to a number of seconds since the epoch, in UTC.
+
 Building the Software:
 ======================