I have a working u-boot 2008.10 on a mips 32 board and am trying to port it over to u-boot 2009.06. So I used buildroot 2009.08 to build the tool chain for my mips32 board as well as u-boot2009.06. I also copied the previous u-boot initialization code to initialize timer, serial port, ram and etc from u-boot 2008.10 to 2009.06.
Right now the problem is the new u-boot 2009.06 does not detect cfi of the flash. I am pretty sure u-boot is running from SDRAM when the problem happens because the address is in the range of SDRAM. Please let me know if you have any suggestion - I am running out of ideas. I am attaching the printout from both the working u-boot 2008.10 and u-boot 2009.06 below.
Thanks a lot.
U-Boot 2009.06 (Sep 30 2009 - 18:41:26)
Reset Cause: Hardware Reset DRAM: 64 MB Top of RAM usable for U-Boot at: 98000000 Reserving 139k for U-Boot at: 97fdc000 Reserving 4352k for malloc() at: 97b9c000 Reserving 36 Bytes for Board Info at: 97b9bfdc Reserving 36 Bytes for Global Data at: 97b9bfb8 Reserving 128k for boot params() at: 97b7bfb8 Stack Pointer at: 97b7bf98 Now running in RAM - U-Boot at: 97fdc000 flash detect cfi not found flash detect cfi not found
U-Boot 2008.10 (Sep 30 2009 - 11:37:03)
Reset Cause: Hardware Reset DRAM: 64 MB Top of RAM usable for U-Boot at: 98000000 Reserving 736k for U-Boot at: 97f44000 Reserving 4352k for malloc() at: 97b04000 Reserving 44 Bytes for Board Info at: 97b03fd4 Reserving 36 Bytes for Global Data at: 97b03fb0 Reserving 128k for boot params() at: 97ae3fb0 Stack Pointer at: 97ae3f98 Now running in RAM - U-Boot at: 97f44000 flash detect cfi fwc addr b0000000 cmd f0 f0 8bit x 8 bit fwc addr b0000000 cmd ff ff 8bit x 8 bit fwc addr b0000055 cmd 98 98 8bit x 8 bit is= cmd 51(Q) addr b0000010 is= 4f 51 fwc addr b0000555 cmd 98 98 8bit x 8 bit is= cmd 51(Q) addr b0000010 is= 4f 51 fwc addr b0000000 cmd f0 f0f0 16bit x 8 bit fwc addr b0000000 cmd ff ffff 16bit x 8 bit fwc addr b00000aa cmd 98 9898 16bit x 8 bit is= cmd 51(Q) addr b0000020 is= 5151 5151 is= cmd 52(R) addr b0000022 is= 5252 5252 is= cmd 59(Y) addr b0000024 is= 5959 5959 device interface is 2 found port 2 chip 1 port 16 bits chip 8 bits