ddr: altera: Clean up scc_mgr_apply_group_dq_out1_delay()

[oweals/u-boot.git] / README

diff --git a/README b/README
index 1e04cf8dcc768ea8abb308c682fddaa62923b6f8..1bcb63c7e39b8316ca8642dce640f543a5f6b012 100644 (file)
--- a/README
+++ b/README
@@ -1730,12 +1730,12 @@ 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.
@@ -5081,6 +5081,18 @@ This firmware often needs to be loaded during U-Boot booting.
 - 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:
 ======================