| 01:49.03 | *** join/#openjtag nm_ (n=hongtd@58.187.131.212) |
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| 06:40.43 | *** join/#openjtag aproemel (n=aproemel@www-cache.bocholt.fh-gelsenkirchen.de) |
| 07:52.43 | aproemel | good morning |
| 07:53.03 | aproemel | drath_: do you have 5 minutes ? |
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| 11:41.33 | aproemel | drath: are you there ? |
| 11:42.50 | drath | hey aproemel |
| 11:42.58 | aproemel | hi :-) |
| 11:43.22 | aproemel | I've got real trouble with my flash, i can write every half word alinged address |
| 11:43.47 | aproemel | but the others wont work :-( |
| 11:46.12 | drath | is your flash 8 or 16 bits wide? |
| 11:46.23 | aproemel | 16 |
| 11:46.34 | aproemel | M29W128FL, 16bit Databus #BYTE is connected to VCC |
| 11:46.54 | aproemel | A0 (Flash) A1(AT91) like figure 18-8 on AT91 Datasheet |
| 11:49.31 | aproemel | i'm writing with this command |
| 11:49.44 | aproemel | str r1, [r3,r0,lsl #1] |
| 11:49.59 | aproemel | r1 data, r3 BASE_FLASH_ADDRESS, r0 Offset |
| 11:51.41 | drath | you said "i can write every half word alinged address" - and what doesn't work? |
| 11:52.09 | aproemel | example |
| 11:52.13 | drath | using a str is probably not a good idea - i guess the AT91 translates that to two writes on the 16-bit bus |
| 11:52.23 | aproemel | write to adress 0x00 the value 0x00 and to address 0x02 the value 0x02 |
| 11:52.30 | aproemel | and take a look to openOCD |
| 11:52.38 | aproemel | 0xffff0000 0xffff0002 |
| 11:53.00 | aproemel | strh won't work, compile error :-( |
| 11:53.24 | drath | did you configure the chipselect for 16-bit? |
| 11:53.43 | aproemel | SMC_CS0 Register 0x00003288 |
| 11:53.50 | aproemel | 16 bit CS, 1 16bit device |
| 11:54.05 | aproemel | BAT = 1, DBW 01b |
| 11:56.15 | drath | ok, you definitely have to use strh for your 16-bit bus |
| 11:56.53 | aproemel | if i use asm("strh r1, [r3,r0, lsl #1]"); |
| 11:56.59 | aproemel | i get missing ']' |
| 11:57.21 | aproemel | wrote the write functions in inline asm |
| 11:58.22 | drath | strh uses a different addressing mode |
| 11:59.07 | drath | check the ARM ARM for valid addressing modes (page 250 in the PDF) |
| 12:00.30 | aproemel | mhh, well on page 194 the STRH seems to be equal with the STR |
| 12:00.39 | aproemel | but there i can see the difference |
| 12:01.03 | drath | it uses Addressing mode 3, misc load/stores |
| 12:01.45 | aproemel | yes, and STR mode 2 |
| 12:02.10 | aproemel | omg, and i'm searching everywhere, but not at the adressing modes |
| 12:02.50 | drath | heh, yeah, i learned about the differences when i wrote the disassembler code for the openocd |
| 12:03.14 | aproemel | I'll hope i get it work today, so then i can take my board home to get uboot working |
| 12:03.20 | aproemel | 3 weeks to go :-( |
| 12:09.48 | aproemel | drath: now i cant compile it :-) |
| 12:15.19 | aproemel | drath: works now, thanks a lot |
| 12:19.29 | drath | you're welcome |
| 12:19.50 | aproemel | :-) |
| 13:16.58 | aproemel | drath: uboot works i think |
| 13:19.32 | drath | cool |
| 13:20.34 | aproemel | but not the flash :-( |
| 13:20.40 | aproemel | but it boots |
| 13:20.44 | aproemel | and serial works |
| 13:20.57 | aproemel | so I'm sure that my loader works correctly |
| 13:24.03 | drath | what's wrong with the flash? |
| 13:25.31 | aproemel | i don't know atm :-( |
| 13:25.59 | aproemel | should use CFI Driver, and take a look to another board which uses it |
| 13:26.10 | aproemel | I think i have missconfigured it |
| 13:38.24 | *** join/#openjtag prpplague^2 (n=dave@mail.americanmicrosystems.com) |
| 13:47.38 | aproemel | drath: but my luck is, i can take my board home, and don't need any oszi :-) |
| 17:26.15 | aproemel | drath: are you still there ? |
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| 18:34.23 | pogo1231735 | Hi! I'm looking for information on how to flash an IXP425 board using OpenOCD. Can anybody help? |
| 18:35.41 | drath | basically it should work, but the XScale stuff isn't tested very well |
| 18:37.12 | pogo1231735 | Trouble is, I don't know how to access the flash. I don't which flash driver I have to use in the .cfg file. I can use OpenOCD for debugging without problems. |
| 18:49.02 | drath | what type of flash is on your board? |
| 19:02.18 | pogo1231735 | The flash chips are Intel 28F128J3D75. |
| 19:04.05 | drath | the cfi driver supports the intel chips |
| 19:04.18 | drath | flash bank cfi 0x60000000 0x1000000 2 2 0 |
| 19:04.52 | drath | this defines a flash bank of 16mb size at address 0x6000000 with 16-bit bus and chip width (i.e. a single 16-bit chip) |
| 19:10.54 | pogo1231735 | Ok, I've got to such chips, so I assume I've got 32 MB flash. That would make 0x2000000, but what about the bus and chip width? |
| 19:11.09 | pogo1231735 | s/to such/two such/ |
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| 19:18.54 | drath_ | i guess the chips are connected in parallel to form a 32-bit bus |
| 19:22.06 | pogo1231735 | That's bus_width = 4, right? |
| 19:24.50 | pogo1231735 | Hm, still no luck with |
| 19:24.50 | pogo1231735 | flash bank cfi 0x50000000 0x1000000 2 4 0 |
| 19:25.23 | pogo1231735 | 0x50000000 is the address that Redboot reports. |
| 19:41.22 | pogo1231735 | I've got no luck, whatever address I try. Maybe OpenOCD doesn't support XScale well enough. I'll try again tomorrow. Thanks for your help, drath! |
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