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| 02:44.17 | demigod2k | hi |
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| 18:19.31 | tzanger | so the CFI command set is only for identification of devices; erase/read/write is still vendor-specific and done through the standard commands (i.e. not CFI commands) found in the datasheet? |
| 18:22.53 | wmat | tzanger: "CFI incorporates detection routines, as well as read, write, and erase routines for both legacy and CFI-enabled devices." |
| 18:23.12 | tzanger | hmm |
| 18:23.25 | tzanger | I can't seem to find the CFI command reference then |
| 18:23.35 | tzanger | I can see writing "QRY" and getting back the identifcation tables |
| 18:23.35 | wmat | http://www.intel.com/design/flcomp/applnots/292204.htm |
| 18:23.38 | tzanger | yeah |
| 18:23.45 | tzanger | show me the get extended status command |
| 18:23.50 | tzanger | it doesn't exist |
| 18:23.56 | tzanger | that's done through writing 0x70 and reading back a byte |
| 18:24.01 | tzanger | which is not CFI as far as I can tell |
| 18:26.13 | wmat | do you mean, Read Extended Status Register? |
| 18:26.41 | wmat | pg. 20, in Block Erase flowchart |
| 18:29.09 | tzanger | yes, what's the command |
| 18:29.14 | tzanger | it says "read extended status register" |
| 18:29.18 | tzanger | what's the command? |
| 18:29.42 | tzanger | clear status reg is 0x50 |
| 18:32.16 | tzanger | extended query table for CFI probing but again, no extended status reg |
| 18:33.02 | tzanger | CFI version 4 for intel would be ideal |
| 18:33.09 | tzanger | as 2.4.31-uc0 doesn't support it (ver 3) |
| 18:33.21 | tzanger | but I hacked it and I can program the device just fine, but I can't seem to get erases to work reliably |
| 18:33.25 | tzanger | driving me insane |
| 18:34.33 | wmat | Command Code 71H |
| 18:35.03 | tzanger | where'd you find that |
| 18:35.15 | wmat | google told me |
| 18:35.25 | tzanger | yes, and your google-fu? |
| 18:35.40 | tzanger | the intel P30 datasheet says nothing about extended status regs |
| 18:36.03 | tzanger | and indeed the cfi_cmdset_0001.c file from 2.4.31 doesn't use it, it uses 0x70 |
| 18:36.58 | wmat | i googled ""Read Extended Status Register" command" |
| 18:37.01 | tzanger | yeah |
| 18:37.14 | tzanger | but the datahseet that comes up (29220303) doesn't pertain to my particular flash chip :-) |
| 18:37.23 | tzanger | that's why I was trying to find a CFI command for it |
| 18:40.04 | tzanger | yeah cmd 0x71 does not work on this device at all |
| 18:40.08 | tzanger | back to the drawering board |
| 18:40.28 | tzanger | cfi_write(map, CMD(0x70), adr); |
| 18:40.31 | tzanger | status = cfi_read(map, adr); |
| 18:40.36 | tzanger | should be that simple |
| 18:40.58 | tzanger | unless I'm bitching up the cs regs or something |
| 18:41.05 | tzanger | but I don't think so |
| 18:41.11 | wmat | try in this: http://www.spansion.com/CFI_v1.4_VendorSpec_Ext_A0.pdf |
| 18:41.58 | tzanger | wmat: hmm, yeah that's a much easeri to read doc than the intel one |
| 18:42.56 | tzanger | that doc doesn't give me erase commands or anything, which leads me back to believing that CFI is "interrogation" only |
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