From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from qb-out-0506.google.com (qb-out-0506.google.com [72.14.204.225]) by ozlabs.org (Postfix) with ESMTP id 53475DDE28 for ; Tue, 8 Jul 2008 05:17:08 +1000 (EST) Received: by qb-out-0506.google.com with SMTP id d8so4505144qbc.37 for ; Mon, 07 Jul 2008 12:17:06 -0700 (PDT) Message-ID: Date: Mon, 7 Jul 2008 15:16:58 -0400 From: "liran raz" To: linuxppc-embedded@ozlabs.org Subject: flash driver MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_15135_24640318.1215458218255" List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , ------=_Part_15135_24640318.1215458218255 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline 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. ------=_Part_15135_24640318.1215458218255 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline 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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