Thanks Patrick, Does this mean I don't need to change the default 50000000 at all?
My intention is to load Linux instead of Android from NAND and following this sunxi wiki: http://linux-sunxi.org/Installing_to_NAND. What changes need to be made in the uboot env besides the /dev/nandd -> /dev/nandb? -Hunter On Monday, March 3, 2014 2:45:21 PM UTC-6, Patrick Wood wrote: > > That's not the nand read address; that's the RAM address where the nand > read command stores data read from nand. The last argument (boot, > recovery) is the nand partition name where it's reading data. > > This is how an android kernel+initrd is loaded. > > On Monday, March 3, 2014 2:42:17 PM UTC-5, hunter hu wrote: >> >> Hi All, >> >> I am trying to boot from NAND, and using Allwinner lichee-dev branch, in >> the sun5i_a13.h header, there is a section of hard coded environment setup >> like this: >> >> 81 #define CONFIG_EXTRA_ENV_SETTINGS \ >> 182 "bootdelay=3\0" \ >> 183 "bootcmd=run setargs boot_normal\0" \ >> 184 "console=ttyS0,115200\0" \ >> 185 "nand_root=/dev/nandd\0" \ >> 186 "mmc_root=/dev/mmcblk0p4\0" \ >> 187 "init=/init\0" \ >> 188 "loglevel=8\0" \ >> 189 "setargs=setenv bootargs console=${console} root=${nand_root}" \ >> 190 "init=${init} loglevel=${loglevel}\0" \ >> 191 "boot_normal=nand read 50000000 boot; boota 50000000\0" \ >> 192 "boot_recovery=nand read 50000000 recovery; boota 50000000\0" \ >> 193 "boot_fastboot=fastboot\0" >> >> My question is: how do I find the nand read address of my own instead of >> default 50000000? >> >> My nand-part on the tablet looks like: >> >> 9 mbr: version 0x00000100, magic softw311 >> 10 2 partitions >> 11 partition 1: class = DISK, name = boot, partition >> start = 32768, partition size = 52768 user_type=0 >> 12 partition 2: class = DISK, name = root, partition >> start = 85536, partition size = 15479264 user_type=0 >> >> Is that the start of nandb which is 85536 x 512 = 43794432 ? >> >> I also need to change /dev/nandd to /dev/nandb because I boot from the >> second partition /dev/nandb, correct? >> >> Any hints are greatly appreciated, >> >> Cheers, >> -Hunter >> >> -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
