cfi_probe help

cfi_probe help

[David H. Lynch Jr.]

	I have written a map driver for my board because the flash must be switched between two processors on different busses.

	I beleive I have all the map_info functions working correctly - I can manually test them from inside the driver probe function, 
	I can successfully read the flash as well as directly execute CFI QRY and SCI functions.

	but when the kernel cfi_probe() code executes it never tries a combination of read/write addresses and data that return results it can match against.
	I have logged the driver load below.
	
picoFlash: pico_flash_init()
pico_mtd.c:v Nov 25 2008  David Lynch dhlii@dlasys.net
drivers/mtd/maps/pico_nor_mtd.c: verify flash[0] is 0xff
drivers/mtd/maps/pico_nor_mtd.c: pico_flash_copy_from(cf81fc18, 00000000, 00000020)
000000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|

drivers/mtd/maps/pico_nor_mtd.c: verify flash[FIRST_FILE_ADDR] contains "PrimaryBoot.bit"
drivers/mtd/maps/pico_nor_mtd.c: pico_flash_copy_from(cf81fc18, 00004000, 00000020)
drivers/mtd/maps/pico_nor_mtd.c: Flash Read Successful - pico_flash_copy_from

004000: 42 69 74 20 46 69 6c 65 3d 50 72 69 6d 61 72 79  |Bit File=Primary|
drivers/mtd/maps/pico_nor_mtd.c: Verify QRY
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000000 <= 00f0
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000000 <= 00ff
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000055 <= 0098
drivers/mtd/maps/pico_nor_mtd.c: pico_flash_copy_from(cf81fc18, 00000000, 00000040)
drivers/mtd/maps/pico_nor_mtd.c: WriteFlashCmdFlash QRY OK
000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  |................|
000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  |................|
000020: 51 00 52 00 59 00 02 00 00 00 40 00 00 00 00 00  |Q.R.Y.....@.....|
000030: 00 00 00 00 00 00 27 00 36 00 00 00 00 00 07 00  |......'.6.......|
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000000 <= 00f0

drivers/mtd/maps/pico_nor_mtd.c: verify SCI
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000000 <= 00f0
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000000 <= 00ff
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000555 <= 00aa
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:000002aa <= 0055
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000555 <= 0088
drivers/mtd/maps/pico_nor_mtd.c: pico_flash_copy_from(cf81fc18, 00000000, 00000100)
drivers/mtd/maps/pico_nor_mtd.c: WriteFlashCmdFlash SCI OK
000000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|
000010: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|
000020: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|
000030: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|
000040: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|
000050: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|
000060: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|
000070: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|
000080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|
000090: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|
0000a0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|
0000b0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|
0000c0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|
0000d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  |................|
0000e0: 04 45 31 34 00 50 c2 44 28 14 00 00 34 76 66 78  |.E14.P.D(...4vfx|
0000f0: 36 30 66 66 36 37 32 00 00 00 00 00 ff ff ff ff  |60ff672.........|
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000555 <= 00aa
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:000002aa <= 0055
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000555 <= 0090
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000000 <= 0000

picoFlash: probing cfi_probe
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000000 <= 00f0
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000000 <= 00ff
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000055 <= 0098
qry_present()[01] osf 1 qry 51 52 59
qry_present()[01] osf 1 Val 0 0 0
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000000 <= 00f0
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000000 <= 00ff
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:000000aa <= 0098
qry_present()[01] osf 2 qry 51 52 59
qry_present()[01] osf 2 Val ffff ffff ffff
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000000 <= 00f0
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000000 <= 00ff
drivers/mtd/maps/pico_nor_mtd.c: write16: f5ffe000:00000154 <= 0098
qry_present()[01] osf 4 qry 51 52 59
qry_present()[01] osf 4 Val ffff ffff ffff
picoFlash: probing jedec_probe
picoFlash: probing map_rom
mtd: Giving out device 0 to pico_nor_flash.0