cfi_probe help

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 [email protected] 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