Menon, Nishanth wrote: > Please see U-boot v2 here:
Sorry, I didn't notice that your patch is for U-Boot V2. > It does not have i2c support. And IMHO, using kernel like i2c addition in > U-Boot v2 is appropriate. Why this is not a bloat U-Boot v2? If it isn't, then it means that U-Boot V2 will be pretty bloated in general. > A) Now, if you just want i2c_transfer without any device interface, you don't > need to compile in the CHARDEV. > B) Since we use a different linking strategy in U-Boot-v2 which uses gcc link > stage to decide which functions be retained and which not, it is pretty neat > to see all unused functionality disappear. > C) kernel has additional bus and class types which are useful when we think > in terms of varied features, in u-boot v2, we don't have a bus and class, > just a plain device+driver interface like the kernel + ioctls to allow "apps" > to invoke functionality within the driver for the device. Very linux like, > call it a micro-linux ;). So kernel i2c architecture fits u_boot v2 better > that u-boot v1's architecture. > D) U-boot v2 has insmod + rmmod -> though this is still to be fixed, once it > is fully functioning, you can loadb just the module feature you need. In > fact, you could even have a filesystem with just modules.... > E) Ofcourse, we work in a single threaded, no interrupt mode in u-boot v2+ > don't care for any power management -> more savings there Sounds to me like U-Boot V2 is just a repacked Linux kernel. We could probably save ourselves a lot of trouble if we just took the DDR and CPU register initialization code in U-Boot and moved it to the kernel. -- Timur Tabi Linux kernel developer at Freescale ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ U-Boot-Users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/u-boot-users
