Add another FLASH to my board

Hello,

I ordered a Strataflash from Intel (E28F128J3C), 128 Mbits. I would like to add it to the AT91RM9200 development board.

Is there any document to explain how to proceed to add a new flash memory in U-boot?

The base address of the first flash (AT49BV162A - 2 MB) is 0x1000000, which it contents U-boot application.

The base address of the strataflash memory : 0x30000000 in order to store linux and ramdisk.

To do?

1. In lib_arm\board.c, I have to call a strataflash_init() routine in order to initialize the flash_info_t structure.

2. call display_flash_config to print out the flash size.

3. I don't know what to do with these routines: flash_erase, write_word,
write_buff. The content of these routines are different if we access to the strataflash or AT49 flash. So, how can I manage it correctly?

Best regards

Christian

Why do you send the very same message twice within just 20 minutes?

Please refer to the source code.

Extend your flash driver to support more than one bank of flash memory. There are many boards that do. See for example CU824 etc.

There is no such file in the U-Boot tree. No filename contains a backspace.

And no, you don't have to call strataflash_init() in lib_*/board.c; I would reject any such modification because there is no need to modify such a central public file just because one board adds a second bank of flash. Also, there is no such function in the while U-Boot tree.

This must be done in your board's flash.c

Such a call is already in place. No need to care about it. Just return the correct value from your flash_init() code.

In your flash driver you will have to cehck which flash device gets addressed, and branch to the right code then.

Best regards,

Wolfgang Denk

Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
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