Changes between Version 2 and Version 3 of ventana/bootloader

Timestamp:

01/30/2018 07:50:14 PM (6 years ago)

Author:

Tim Harvey

Comment:

added instructions for building mainline U-Boot

ventana/bootloader

@@ -219 +219 @@
 
 
+=== Upstream mainline U-Boot Support ===
+Gateworks is an active participant in the development of U-Boot in order to best support our products. By submitting code to the U-Boot project we ensure:
+ - our code is peer reviewed
+ - our users can keep up to date with the latest U-Boot bootloader even if we are not
+ - nothing is kept proprietary
+
+The only patches that we have not mainlined is a small set of patches that allow combined NAND and MMC support in a single SPL/U-Boot. These patches need a bit more work before they would be considered elegant enough for the mainline U-Boot but also they do not add much value for the end user. The reason we use them is so that we can distribute a single SPL/U-Boot image which avoids user confusion determining if they need a **nand** version or **mmc** version of the bootloader.
+
+To build the upstream Bootloader you can following the [#building instructions above] with the following differences:
+ 1. clone the mainline U-Boot repo:
+{{{#!bash
+git://git.denx.de/u-boot.git
+}}}
+ 2. choose either the **nand** defconfig or the **emmc** defconfig depending on the flash storage on your Ventana board:
+  * NAND based boards: GW54xx/GW53xx/GW52xx/GW51xx/GW551x/GW552x/GW553x
+{{{#!bash
+make gwventana_nand_defconfig
+}}}
+  * eMMC based boards:
+{{{#!bash
+make gwventana_emmc_defconfig
+}}}
+
+The primary reasons for using the mainline U-Boot over the Gateworks branches would be:
+ * if you need a newer feature
+ * if you are using HAB for secure boot and need a smaller SPL for code signing purposes
+
+
 [=#flashing]
 == Programming / Installing U-Boot ==