hi, I'm trying to setup the kernel's (linux-2.6.24) flash driver. Our flash is combined of 2 chips of S29GLN (spanion) 2 X 16 bits data chips connected to 32 bits data bus. This flash is compatible with the AMD CFI. I've configured the kernel to: 1. Detect flash chips by common flash interface (CFI) probe. 2. Support for AMD/Fujitsu flash chips (The flash starts at absolute address 0xfc000000 & size is 0x4000000) When the kernel starts I see the messages attached below, which I think indicate that something might be wrong with the detection of the flsah. 1. Is this correct ? - something is wrong with the flash detection? 2. Which device I need to use in order to read/write to the flash? (I don't see any /flash device under /dev/ only: /dev/mtd0 .. /dev/mtd3 & /dev/mtdblock0 .. /dev/mtdblock3)
Debug messages (DEBUG_CFI is defined): physmap platform flash device: 04000000 at fc000000 Number of erase regions: 1 Primary Vendor Command Set: 0002 (AMD/Fujitsu Standard) Primary Algorithm Table at 0040 Alternative Vendor Command Set: 0000 (None) No Alternate Algorithm Table Vcc Minimum: 2.7 V Vcc Maximum: 3.6 V No Vpp line Typical byte/word write timeout: 128 \uffffs Maximum byte/word write timeout: 1024 \uffffs Typical full buffer write timeout: 128 \uffffs Maximum full buffer write timeout: 4096 \uffffs Typical block erase timeout: 1024 ms Maximum block erase timeout: 16384 ms Chip erase not supported Device size: 0x2000000 bytes (32 MiB) Flash Device Interface description: 0x0002 - supports x8 and x16 via BYTE# with asynchronous interface Max. bytes in buffer write: 0x20 Number of Erase Block Regions: 1 Erase Region #0: BlockSize 0x20000 bytes, 256 blocks physmap-flash.0: Found 2 x16 devices at 0x0 in 32-bit bank Amd/Fujitsu Extended Query Table at 0x0040 physmap-flash.0: CFI does not contain boot bank location. Assuming top. number of CFI chips: 1 cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness. of-flash: probe of fc000000.flash failed with error -16 Thanks, Liran.
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