[U-Boot] CFI driver and P33 64M flash

[psdof <malik_pranay@yahoo.com>]

Hi,

I have a similar p30 intel 64M flash.When I try to initialize both banks at
0x20000000 and 0x22000000, u-boot crashes while initializing second bank at
0x22000000, i debugged and found out that u-boot couldn't sucessfully write
to second bank. But when i plug in the debugger to my board i can see and
use the second bank starting at 0x22000000.
Though if i initialize only first bank everything runs normal but i am left
with 32Mb of space.

I am going bonkers over this, please help .


Felix Radensky wrote:
> 
> Hi,
> 
> I'm running U-Boot 1.3.4 on custom 460EX based board,
> equipped with 64M P33 flash (similar to Intel P30). See
> http://www.numonyx.com/Documents/Datasheets/314749_P33_Discrete_DS.pdf
> 
> This flash is comprised internally of two 32M flashes.
> I have the following declarations in configuration file:
> 
> #define CFG_FLASH_CFI            /* The flash is CFI compatible    */
> #define CFG_FLASH_CFI_DRIVER        /* Use common CFI driver    */
> 
> #define CFG_FLASH_BANKS_LIST    {CFG_FLASH_BASE}
> #define CFG_MAX_FLASH_BANKS    1    /* max number of memory banks       
> */
> #define CFG_MAX_FLASH_SECT    518    /* max number of sectors on one 
> chip    */
> 
> #define CFG_FLASH_USE_BUFFER_WRITE 1    /* use buffered writes (20x 
> faster)    */
> #define CFG_FLASH_PROTECTION       1    /* use hardware flash 
> protection        */
> #define CFG_FLASH_EMPTY_INFO        /* print 'E' for empty sector on 
> flinfo */
> 
> U-Boot identifies this flash as 32M flash. Below is debug output from 
> CFI driver:
> 
> FLASH: flash detect cfi
> fwc addr fc000000 cmd f0 f0 8bit x 8 bit
> fwc addr fc000000 cmd ff ff 8bit x 8 bit
> fwc addr fc000055 cmd 98 98 8bit x 8 bit
> is= cmd 51(Q) addr fc000010 is= 0 51
> fwc addr fc000555 cmd 98 98 8bit x 8 bit
> is= cmd 51(Q) addr fc000010 is= 0 51
> fwc addr fc000000 cmd f0 f0f0 16bit x 8 bit
> fwc addr fc000000 cmd ff ffff 16bit x 8 bit
> fwc addr fc0000aa cmd 98 9898 16bit x 8 bit
> is= cmd 51(Q) addr fc000020 is= 0051 5151
> fwc addr fc000aaa cmd 98 9898 16bit x 8 bit
> is= cmd 51(Q) addr fc000020 is= 0051 5151
> fwc addr fc000000 cmd f0 00f0 16bit x 16 bit
> fwc addr fc000000 cmd ff 00ff 16bit x 16 bit
> fwc addr fc0000aa cmd 98 0098 16bit x 16 bit
> is= cmd 51(Q) addr fc000020 is= 0051 0051
> is= cmd 52(R) addr fc000022 is= 0052 0052
> is= cmd 59(Y) addr fc000024 is= 0059 0059
> device interface is 1
> found port 2 chip 2 port 16 bits chip 16 bits
> 00 : 51 52 59 01 00 0a 01 00 00 00 00 23 36 85 95 08  QRY........#6...
> 10 : 09 0a 00 01 01 02 00 19 01 00 06 00 02 03 00 80  ................
> 20 : 00 fe 00 00 02 00 00 00 00 ff ff ff ff fc 36 a4  ..............6.
> fwc addr fc000000 cmd ff 00ff 16bit x 16 bit
> fwc addr fc000000 cmd 90 0090 16bit x 16 bit
> fwc addr fc000000 cmd ff 00ff 16bit x 16 bit
> fwc addr fc0000aa cmd 98 0098 16bit x 16 bit
> manufacturer is 1
> manufacturer id is 0x89
> device id is 0x22
> device id2 is 0x0
> cfi version is 0x3135
> size_ratio 1 port 16 bits chip 16 bits
> found 2 erase regions
> erase region 0: 0x00800003
> erase_region_count = 4 erase_region_size = 32768
> erase region 1: 0x020000fe
> erase_region_count = 255 erase_region_size = 131072
> fwc addr fc000000 cmd ff 00ff 16bit x 16 bit
> 32 MB
> 
> What should I change in configuration/driver to get
> all 64M of flash detected ?
> 
> Thanks a lot.
> 
> Felix.
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> 
> 

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