ARC U-BOOT RELEASE NOTES ======================= Product : U-Boot for ARC cores Version : 1.1.3 Date : Jun 12, 2006 Table of Contents ----------------- 1. Overview 2. Features Supported 3. Known Limitations and Defects 4. Contact Information 5. Reference 1. Overview ----------- This is the U-Boot port for the family of ARC700 and ArcTangentA5 cores. More info on these cores at http://www.arc.com/ 2. Features Supported --------------------- U-Boot is a boot loader program that is stored in flash memory on target system. U-boot allows the target to load a binary image from a network connection or flash memory.The following is an overview of some of U-Boot’s features: 2.1 Jun 12, 2006 ---------------- 1.Autoboot - Autoboot will automatically boot the system after the timer counts down. The countdown timer is setup with a default time of 5 seconds. If a key is pressed before this time the autoboot procedure halts and the user is brought to the U-Boot command line. 2.Upgrade Features - U-Boot allows itself to be upgraded with a new version from within U-Boot. 3.Networking - U-Boot has support for the common network commands ping, tftp 4.Environment Variables - Environment variables can be set, saved, and displayed through the U-Boot command line using the commands setenv or set, save or saveenv, and print or printenv. 3. Known Limitations and Defects -------------------------------- 1. Data Cache and Instruction Cache are disabled in U-Boot. 2. Bootm Command won't work, if kernel load address and tftpboot load address same 4. Contact Information ---------------------- In case of any support queries please contact arc-support@codito.com. If you have a support contract please use the support site at http://support.codito.com. For bug reporting and general queries please use the mailing list at http://arc-linux.org/mailman/listinfo/arc-linux-dev 5. References ------------- 1. ARCCompact ISA Reference Manual 2. ARC700 processor manuals 3. ARC peripherals manuals 4. U-Boot User Guide Linux Team, Codito