Hi All,
I am porting Linux on the custom board PMC8266 (having MPC8266
microprocessor) based on the ADS8260 board.I am using ELDK1.1.1 and
Linux2.4.24.
I am using Intel StrataFlash Memory Chip (28F256J3A) where the JFFS2 filesystem
image is
located.
I am not able to mount the file system, and I am getting the following error
message during boot up
******************************************
CFI: Found no pmc8260 flash memory device at location zero
******************************************
During the dry run I have figured out that the error is occuring because the
Flash is getting in to the CFI Query mode,
The code snippet as in file drivers/mtd/chips/cfi_probe.c is as following:
********************************************
static int cfi_probe_chip(struct map_info *map, __u32 base,
struct flchip *chips, struct cfi_private *cfi)
{
...................................
...................................
..................................
cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi-device_type, NULL);
cfi_send_gen_cmd(0x98, 0x55, base, map, cfi, cfi-device_type, NULL);
...................................
...................................
..................................
}
********************************************
As per the data sheet the command sequence to set the flash in to CFI Query
mode is correct.
But what the kernel is getting at the Query Address is the Data present at that
location,instead of the expected
Query DATA i.e Q.R.Y
Please let me know how should i get rid of this problem.
Regards,
Vikrant BasotraIndiatimes Email now powered by APIC Advantage. Help!
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