[U-Boot-Users] cannot read flash manufact. id on 405EP with u-boot-1.1.6

[U-Boot-Users] cannot read flash manufact. id on 405EP with u-boot-1.1.6

[Tom Brown]

Hi,

We currently use u-boot-1.0.0 successfully on our 405EP SBC. Last year, we 
upgraded our toolchain from
gcc-3.2.2-uClibc-0.9.20-binutils-2.13.2.1-linux-2.4.21-powerpc
to
gcc-3.4.3-uClibc-0.9.27-binutils-2.15.91.0.2-linux-2.4.27-powerpc

When we made the upgrade we couldn't get u-boot-1.0.0 to compile with the new 
toolchain. Now, we'd like to upgrade u-boot so it compiles with the same 
toolchain as our firmware image. I am able to get u-boot-1.1.6 to compile 
with the new toolchain. However, it will not get past recognizing the flash 
during boot. The output is given below. As you can see, it is reading a value 
of 0x1f8b08 for the manufacturer type when it should be reading 0x0001 for 
AMD. We get the same problem when we try to use u-boot-1.1.0. Any ideas on 
what we need to look at?

Thanks,
Tom

U-Boot 1.1.6.1 for the 195Eg

CPU:   AMCC PowerPC 405EP Rev. B at 250 MHz (PLB=125, OPB=62, EBC=31 MHz)
       I2C boot EEPROM disabled
       Internal PCI arbiter enabled
       16 kB I-Cache 16 kB D-Cache
I2C:   ready
DRAM:  16 MB
Top of RAM usable for U-Boot at: 01000000
Reserving 251k for U-Boot at: 00fc1000
Reserving 256k for malloc() at: 00f81000
Reserving 140 Bytes for Board Info at: 00f80f74
Reserving 48 Bytes for Global Data at: 00f80f44
Stack Pointer at: 00f80f28
New Stack Pointer is: 00f80f28
Now running in RAM - U-Boot at: 00fc1000
FLASH: flash_get_size begin
manufact type value == 1f8b08
flash_id == FLASH_UNKOWN
flash_get_size end
## Unknown FLASH on Bank 0 - Size = 0x00000000 = 0 MB
flash_protect ON: from 0xFFFC0000 to 0xFFFFFFFF

[U-Boot-Users] cannot read flash manufact. id on 405EP with u-boot-1.1.6

[Timur Tabi]

Tom Brown wrote:

> When we made the upgrade we couldn't get u-boot-1.0.0 to compile with the new 
> toolchain. Now, we'd like to upgrade u-boot so it compiles with the same 
> toolchain as our firmware image. I am able to get u-boot-1.1.6 to compile 
> with the new toolchain. However, it will not get past recognizing the flash 
> during boot. The output is given below. As you can see, it is reading a value 
> of 0x1f8b08 for the manufacturer type when it should be reading 0x0001 for 
> AMD. 

Try using the latest code from the git repository.  There's a fix for AMD flash 
chips and manufacturer IDs.


-- 
Timur Tabi
Linux Kernel Developer @ Freescale