wl1251 NVS calibration data format
Hi! Do you know format of wl1251 NVS calibration data file?
I found that there is tool for changing NVS file for wl1271 and newer chips (so not for wl1251!) at: https://github.com/gxk/ti-utils
And wl1271 has in NVS data already place for MAC address. And in wlcore (for wl1271 and newer) there is really kernel code which is doing something with MAC address in NVS, see:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/net/wireless/ti/wlcore/boot.c#n352
So... I would like to know if in wl1251 NVS calibration file is also some place for MAC address or not.
Default wl1251 NVS calibration file is available in linux-firmware:
https://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/tree/ti-connectivity/wl1251-nvs.bin
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Pali Rohár [email protected]
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Quoted 9 lines · On Friday 16 December 2016 12:01:48 Pali Rohár wrote:
Hi! Do you know format of wl1251 NVS calibration data file?
I found that there is tool for changing NVS file for wl1271 and newer chips (so not for wl1251!) at: https://github.com/gxk/ti-utils
And wl1271 has in NVS data already place for MAC address. And in wlcore (for wl1271 and newer) there is really kernel code which is doing something with MAC address in NVS, see:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/net/wireless/ti/wlcore/boot.c#n352
Also, there is parsing MAC address from NVS wl1271 data:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/net/wireless/ti/wlcore/main.c#n6009
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So... I would like to know if in wl1251 NVS calibration file is also some place for MAC address or not.
Default wl1251 NVS calibration file is available in linux-firmware:
https://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/tree/ti-connectivity/wl1251-nvs.bin
Signature · 2 lines
Pali Rohár [email protected]
Hi,
Quoted 10 lines · Pali Rohár
Hi! Do you know format of wl1251 NVS calibration data file?
I found that there is tool for changing NVS file for wl1271 and newer chips (so not for wl1251!) at: https://github.com/gxk/ti-utils
And wl1271 has in NVS data already place for MAC address. And in wlcore (for wl1271 and newer) there is really kernel code which is doing something with MAC address in NVS, see:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/net/wireless/ti/wlcore/boot.c#n352
Quoted 5 lines
So... I would like to know if in wl1251 NVS calibration file is also some place for MAC address or not.
Default wl1251 NVS calibration file is available in linux-firmware:
https://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/tree/ti-connectivity/wl1251-nvs.bin
Pandora people [0] have a description of the format at [1].
[0] https://pandorawiki.org/WiFi
[1] http://notaz.gp2x.de/misc/pnd/wl1251/nvs_map.txt
-- Sebastian
Quoted 18 lines · On Saturday 17 December 2016 10:37:05 Sebastian Reichel wrote:
Hi,
Quoted 15 lines · Pali Rohár
Hi! Do you know format of wl1251 NVS calibration data file?
I found that there is tool for changing NVS file for wl1271 and newer chips (so not for wl1251!) at:
https://github.com/gxk/ti-utilsAnd wl1271 has in NVS data already place for MAC address. And in wlcore (for wl1271 and newer) there is really kernel code which is doing something with MAC address in NVS, see:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tre
e/drivers/net/wireless/ti/wlcore/boot.c#n352So... I would like to know if in wl1251 NVS calibration file is also some place for MAC address or not.
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Default wl1251 NVS calibration file is available in linux-firmware:
https://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmwar
e.git/tree/ti-connectivity/wl1251-nvs.binPandora people [0] have a description of the format at [1].
[0] https://pandorawiki.org/WiFi
[1] http://notaz.gp2x.de/misc/pnd/wl1251/nvs_map.txt
Thank you very very much!
I tried to search for something, but I have not find anything.
In that description is something about STA mac address:
01a 6d //STA_ADDR_L Register Address. (STA MAC Address) 01b 54 // 01c 00 //STA_ADDR_L Register 01d 00 // 01e 32 // 01f 28 // 020 00 //STA_ADDR_H Register Data.
STA would be abbreviation for station and so it should be really set to mac address of that chip?
If yes, that could allow us to set permanent MAC address at time when loading & sending NVS calibration data... Exactly same as wl1271 and new drivers are working.
I will try to play with driver if it is really truth!
I already looked into original TI's multiplatform HAL driver for wl1251 chip (big mess) and found there that there is wl1251 command to read mac address from chip. It could be done by this wl1251 function:
wl1251_cmd_interrogate(wl, DOT11_STATION_ID, mac, sizeof(*mac))
(same id as for setting permanent mac address, but opposite to read it)
Signature · 2 lines
Pali Rohár [email protected]
Hi,
Quoted 21 lines · Pali Rohár
Quoted 20 lines · On Saturday 17 December 2016 10:37:05 Sebastian Reichel wrote:
Quoted 18 lines · Pali Rohár
Hi! Do you know format of wl1251 NVS calibration data file?
I found that there is tool for changing NVS file for wl1271 and newer chips (so not for wl1251!) at:
https://github.com/gxk/ti-utilsAnd wl1271 has in NVS data already place for MAC address. And in wlcore (for wl1271 and newer) there is really kernel code which is doing something with MAC address in NVS, see:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tre
e/drivers/net/wireless/ti/wlcore/boot.c#n352So... I would like to know if in wl1251 NVS calibration file is also some place for MAC address or not.
Default wl1251 NVS calibration file is available in linux-firmware:
https://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmwar
e.git/tree/ti-connectivity/wl1251-nvs.bin
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Quoted 4 lines
Pandora people [0] have a description of the format at [1].
[0] https://pandorawiki.org/WiFi
[1] http://notaz.gp2x.de/misc/pnd/wl1251/nvs_map.txtThank you very very much!
You are welcome.
Quoted 11 lines
I tried to search for something, but I have not find anything. In that description is something about STA mac address:
01a 6d //STA_ADDR_L Register Address. (STA MAC Address) 01b 54 // 01c 00 //STA_ADDR_L Register 01d 00 // 01e 32 // 01f 28 // 020 00 //STA_ADDR_H Register Data.
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STA would be abbreviation for station and so it should be really set to mac address of that chip?
Yes, STA is a common abbreviation:
https://en.wikipedia.org/wiki/Station_(networking)
Quoted 5 lines
If yes, that could allow us to set permanent MAC address at time when loading & sending NVS calibration data... Exactly same as wl1271 and new drivers are working.
I will try to play with driver if it is really truth!
Thanks for your work.
Quoted 7 lines
I already looked into original TI's multiplatform HAL driver for wl1251 chip (big mess) and found there that there is wl1251 command to read mac address from chip. It could be done by this wl1251 function:
wl1251_cmd_interrogate(wl, DOT11_STATION_ID, mac, sizeof(*mac))(same id as for setting permanent mac address, but opposite to read it)
-- Sebastian
MAC address in wl1251 NVS data (Was: Re: wl1251 NVS calibration data format)
Quoted 4 lines · Pali Rohár
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In that description is something about STA mac address:
019 02 //length
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01a 6d //STA_ADDR_L Register Address. (STA MAC
Address)01b 54 // 01c 00 //STA_ADDR_L Register 01d 00 // 01e 32 // 01f 28 // 020 00 //STA_ADDR_H Register Data.
021 08 //
022 00 //
023 00 //So... above data means:
019 - number of words
01a - low bits of offset applied with mask 0xfe
01b - high bits of offset
01c-01f first word
020-023 second word
Interpreted as: at address offset 0x536c are written two words 0x28320000 and 0x00000800
wl1271 driver has in linux/drivers/net/wireless/ti/wlcore/boot.c this:
/* update current MAC address to NVS */ nvs_ptr[11] = wl->addresses[0].addr[0]; nvs_ptr[10] = wl->addresses[0].addr[1]; nvs_ptr[6] = wl->addresses[0].addr[2]; nvs_ptr[5] = wl->addresses[0].addr[3]; nvs_ptr[4] = wl->addresses[0].addr[4]; nvs_ptr[3] = wl->addresses[0].addr[5];
Looking at wl1271-nvs.bin file (which is "modified" in kernel by boot.c)
000: 01
001: 6d
002: 54
003: 00
004: 00
005: ef
006: be
Means: at address offset 0x536c is written one word 0xBEEF0000
007: 01
008: 71
009: 54
00a: ad
00b: de
00c: 00
00d: 00
Means: at address offset 0x5371 is written one word 0x0000DEAD
Above boot.c kernel code updates those data to MAC address, so at address offset 0x536c is written four low bytes of MAC address and to 0x5371 are written remaining two bytes. So 00:00:DE:AD:BE:EF
So conclusion: address offset for wl1271 (where is written MAC address) is exactly same as for wl1251 which is marked in that documentation as STA_ADDR_L Register.
Btw, in our wl1251-nvs.bin found in Maemo rootfs, which is exactly same as in linux-firmware.git tree there are those data:
019: 02
01a: 6d
01b: 54
01c: 09
01d: 03
01e: 07
01f: 20
020: 00
021: 00
022: 00
023: 00
So hardcoded MAC address in wl1251-nvs.bin is: 00:00:20:07:03:09. Which is assigned to DIAB. Strange that it is not TI...
Signature · 2 lines
Pali Rohár [email protected]
Quoted 11 lines · On Saturday 17 December 2016 12:14:50 Pali Rohár wrote:
I will try to play with driver if it is really truth!
I already looked into original TI's multiplatform HAL driver for wl1251 chip (big mess) and found there that there is wl1251 command to read mac address from chip. It could be done by this wl1251 function:
wl1251_cmd_interrogate(wl, DOT11_STATION_ID, mac, sizeof(*mac))(same id as for setting permanent mac address, but opposite to read it)
Confirmed! Calling that function (before setting real linux mac address) returns MAC address 00:00:20:07:03:09.
Changing NVS data at position 0x1c-0x21 changes also what above function returns.
So really at position 0x1c-0x21 in NVS data is stored MAC address (in reverse order). Just default is some unknown 00:00:20:07:03:09.
So MAC address is really part of NVS data.
Signature · 2 lines
Pali Rohár [email protected]