Re: [U-Boot-Users] Configuring Spansion flash

14 Sep 2007


      So how shall I proceed next Ben.
Where and in which file this configuration is done?
Whenever I trace out which flash is detected, it always gets detects as
FLASH_UNKNOWN.
In flash.c file....
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
ulong flash_get_size (FPWV *addr, flash_info_t *info)
{
    int i;
    FPWV* addr2;
/* Write auto select command: read Manufacturer ID */
    /* Write auto select command sequence and test FLASH answer */
    addr[FLASH_CYCLE1] = (FPW)0x00AA00AA;	/* for AMD, Intel
ignores this */
    addr[FLASH_CYCLE2] = (FPW)0x00550055;	/* for AMD, Intel
ignores this */
    addr[FLASH_CYCLE1] = (FPW)0x00900090;	/* selects Intel or AMD
*/
/* The manufacturer codes are only 1 byte, so just use 1 byte.
     * This works for any bus width and any FLASH device width.
     */
    udelay(100);
    switch (addr[0] & 0xff) {
case (uchar)AMD_MANUFACT:
    	info->flash_id = FLASH_MAN_AMD;
    	break;
case (uchar)INTEL_MANUFACT:
    	info->flash_id = FLASH_MAN_INTEL;
    	break;
default:
    	info->flash_id = FLASH_UNKNOWN;
    	info->sector_count = 0;
    	info->size = 0;
    	break;
    }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Regards,
Yasotha Balan R
Member Technical Staff - HPEG
HCL Technologies Ltd.
73,74, South Phase Road, Ambattur Indutrial Estate, Chennai 600058.
Tel: +91-044-43935000 Extn. (5076)
Mob: +91-9994309885
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-----Original Message-----
From: Ben Warren [mailto:bwarren@qstreams.com] 
Sent: Friday, September 14, 2007 8:31 PM
To: Yasothabalan Ramaswamy-TLS,Chennai
Cc: u-boot-users@lists.sourceforge.net
Subject: Re: [U-Boot-Users] Configuring Spansion flash
Yasothabalan Ramaswamy-TLS,Chennai wrote:
...
Thanks Ben.
I checked out in my board and found the part number to be:
S29GL128N90-R2. (128Mb)
OK. That's a good start. This is a very common flash type.
...
Regards,
Yasotha Balan R
-----Original Message-----
From: Ben Warren [mailto:bwarren@qstreams.com] 
Sent: Friday, September 14, 2007 7:54 PM
To: Yasothabalan Ramaswamy-TLS,Chennai
Cc: u-boot-users@lists.sourceforge.net
Subject: Re: [U-Boot-Users] Configuring Spansion flash
Yasothabalan Ramaswamy-TLS,Chennai wrote:
...
Hi all,
I am using Lite5200B board with SPANSION type flash. UBoot code 
doesn't detect this flash.
I don't know anything about this board or processor, but there are 
people here who do. Please elaborate on what you mean by 'U-boot code 
doesn't detect this flash', and provide details on the steps you've 
taken to reach this conclusion.
Also, please don't top-post. Post responses directly after the relevant 
parts of e-mail messages. The previously-mentioned curmudgeons will eat 
your children if you continue this habit.
regards,
Ben
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