BRCM43430 : Country change to get support for channel 12 & 13

[bamo_4116701]

Hello,

As channels 12 & 13 seem to be disabled, I assume wifi chipset is configured for US.

How can I change the country under Linux?

I add country=FR in wpa-supplicant conf file without success

I try to use iw without success too

# iw reg get   
global
country 00: DFS-UNSET
        (2402 - 2472 @ 40), (6, 20), (N/A)
        (2457 - 2482 @ 20), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (2474 - 2494 @ 20), (6, 20), (N/A), NO-OFDM, PASSIVE-SCAN
        (5170 - 5250 @ 80), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (5250 - 5330 @ 80), (6, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
        (5490 - 5730 @ 160), (6, 20), (0 ms), DFS, PASSIVE-SCAN
        (5735 - 5835 @ 80), (6, 20), (N/A), PASSIVE-SCAN
        (57240 - 63720 @ 2160), (N/A, 0), (N/A)

global
country 00: DFS-UNSET
        (2402 - 2472 @ 40), (6, 20), (N/A)
        (2457 - 2482 @ 20), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (2474 - 2494 @ 20), (6, 20), (N/A), NO-OFDM, PASSIVE-SCAN
        (5170 - 5250 @ 80), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (5250 - 5330 @ 80), (6, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
        (5490 - 5730 @ 160), (6, 20), (0 ms), DFS, PASSIVE-SCAN
        (5735 - 5835 @ 80), (6, 20), (N/A), PASSIVE-SCAN
        (57240 - 63720 @ 2160), (N/A, 0), (N/A)

# iw reg set FR
# iw reg get   
global
country 00: DFS-UNSET
        (2402 - 2472 @ 40), (6, 20), (N/A)
        (2457 - 2482 @ 20), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (2474 - 2494 @ 20), (6, 20), (N/A), NO-OFDM, PASSIVE-SCAN
        (5170 - 5250 @ 80), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (5250 - 5330 @ 80), (6, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
        (5490 - 5730 @ 160), (6, 20), (0 ms), DFS, PASSIVE-SCAN
        (5735 - 5835 @ 80), (6, 20), (N/A), PASSIVE-SCAN
        (57240 - 63720 @ 2160), (N/A, 0), (N/A)

global
country 00: DFS-UNSET
        (2402 - 2472 @ 40), (6, 20), (N/A)
        (2457 - 2482 @ 20), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (2474 - 2494 @ 20), (6, 20), (N/A), NO-OFDM, PASSIVE-SCAN
        (5170 - 5250 @ 80), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (5250 - 5330 @ 80), (6, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
        (5490 - 5730 @ 160), (6, 20), (0 ms), DFS, PASSIVE-SCAN
        (5735 - 5835 @ 80), (6, 20), (N/A), PASSIVE-SCAN
        (57240 - 63720 @ 2160), (N/A, 0), (N/A)

 What is Cypress recommend way to set the Country in Linux? 

Regards

Baptiste Moraine

[Murali_R]

@bamo_4116701 

If you have the wl tool, doing a simple 'wl country country_code' should help you to set the required country code.

Also can you confirm if you have the .clm_blob file in your directory before you initialize the driver?

[bamo_4116701]

Hello,

Thank you for your feedback.

For information, in /lib/firmware/brcm,  I have the following files :

brcmfmac43430-sdio.bin 

brcmfmac43430-sdio.clm_blob 

brcmfmac43430-sdio.txt

Unfortunately, I do not have wl tool in the rootfs of my products.

Is there another way to configure the country? For information, in my products , regarding wifi, I have only iw and wpa_supplicant

If not, how can I get  the source code of wl_tool in order to cross-compile it for my products?

Regards

Baptiste Moraine

[bamo_4116701]

Hello,

For information, clm_blob file seems to be used as after renaming it, I face an error :

[  264.860000] Loading modules backported from Linux version v5.4.18-2020_0402-0-g392330e
[  264.860000] Backport generated by backports.git v5.5.11-1-0-gabe05f0
[  265.060000] cfg80211: failed to load regulatory.db
[  265.170000] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43430-sdio for chip BCM43430/1
[  265.210000] usbcore: registered new interface driver brcmfmac
[  265.490000] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43430-sdio for chip BCM43430/1
[  265.520000] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available
[  265.550000] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43430/1 wl0: Feb 16 2020 22:39:24 version 7.45.98.97 (r724416 CY) FWID 01-bf41ed64

When not renaming clm_blob file, I have

[  306.320000] Loading modules backported from Linux version v5.4.18-2020_0402-0-g392330e
[  306.330000] Backport generated by backports.git v5.5.11-1-0-gabe05f0
[  306.520000] cfg80211: failed to load regulatory.db
[  306.550000] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43430-sdio for chip BCM43430/1
[  306.570000] usbcore: registered new interface driver brcmfmac
[  306.830000] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43430-sdio for chip BCM43430/1
[  306.850000] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43430/1 wl0: Feb 16 2020 22:39:24 version 7.45.98.97 (r724416 CY) FWID 01-bf41ed64

Could brcmfmac43430-sdio.txt file be modified to set country code?

Regards

Baptiste Moraine

[bamo_4116701]

Hello,

Maybe my first analysis was wrong. The fact that am not able to scan or connect to Hotspots on channel 12,13 & 14 is maybe not related to the Country settings.

Indeed, channels 12, 13 & 14 seems active.

# iw list
Wiphy phy0
        max # scan SSIDs: 10
        max scan IEs length: 2048 bytes
        max # sched scan SSIDs: 0
        max # match sets: 0
        Retry short limit: 7
        Retry long limit: 4
        Coverage class: 0 (up to 0m)
        Device supports roaming.
        Supported Ciphers:
                * WEP40 (00-0f-ac:1)
                * WEP104 (00-0f-ac:5)
                * TKIP (00-0f-ac:2)
                * CCMP (00-0f-ac:4)
                * CMAC (00-0f-ac:6)
        Available Antennas: TX 0 RX 0
        Supported interface modes:
                 * IBSS
                 * managed
                 * AP
                 * P2P-client
                 * P2P-GO
                 * P2P-device
        Band 1:
                Capabilities: 0x1020
                        HT20
                        Static SM Power Save
                        RX HT20 SGI
                        No RX STBC
                        Max AMSDU length: 3839 bytes
                        DSSS/CCK HT40
                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
                Minimum RX AMPDU time spacing: 16 usec (0x07)
                HT TX/RX MCS rate indexes supported: 0-7
                Bitrates (non-HT):
                        * 1.0 Mbps
                        * 2.0 Mbps (short preamble supported)
                        * 5.5 Mbps (short preamble supported)
                        * 11.0 Mbps (short preamble supported)
                        * 6.0 Mbps
                        * 9.0 Mbps
                        * 12.0 Mbps
                        * 18.0 Mbps
                        * 24.0 Mbps
                        * 36.0 Mbps
                        * 48.0 Mbps
                        * 54.0 Mbps
                Frequencies:
                        * 2412 MHz [1] (20.0 dBm)
                        * 2417 MHz [2] (20.0 dBm)
                        * 2422 MHz [3] (20.0 dBm)
                        * 2427 MHz [4] (20.0 dBm)
                        * 2432 MHz [5] (20.0 dBm)
                        * 2437 MHz [6] (20.0 dBm)
                        * 2442 MHz [7] (20.0 dBm)
                        * 2447 MHz [8] (20.0 dBm)
                        * 2452 MHz [9] (20.0 dBm)
                        * 2457 MHz [10] (20.0 dBm)
                        * 2462 MHz [11] (20.0 dBm)
                        * 2467 MHz [12] (20.0 dBm)
                        * 2472 MHz [13] (20.0 dBm)
                        * 2484 MHz [14] (20.0 dBm)
        Supported commands:
                 * new_interface
                 * set_interface
                 * new_key
                 * start_ap
                 * set_bss
                 * join_ibss
                 * set_pmksa
                 * del_pmksa
                 * flush_pmksa
                 * remain_on_channel
                 * frame
                 * set_wiphy_netns
                 * set_channel
                 * start_p2p_device
                 * connect
                 * disconnect
                 * crit_protocol_start
                 * crit_protocol_stop
                 * Unknown command (122)
        Supported TX frame types:
                 * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * P2P-device: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
        Supported RX frame types:
                 * managed: 0x40 0xd0
                 * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
                 * P2P-client: 0x40 0xd0
                 * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
                 * P2P-device: 0x40 0xd0
        WoWLAN support:
                 * wake up on disconnect
                 * wake up on magic packet
                 * wake up on pattern match, up to 16 patterns of 1-128 bytes,
                   maximum packet offset 1500 bytes
        software interface modes (can always be added):
        valid interface combinations:
                 * #{ managed } <= 1, #{ P2P-device } <= 1, #{ P2P-client, P2P-GO } <= 1,
                   total <= 3, #channels <= 2
                 * #{ managed } <= 1, #{ AP } <= 1, #{ P2P-client } <= 1, #{ P2P-device } <= 1,
                   total <= 4, #channels <= 1
        Device supports scan flush.

 Is these channels are not disabled, what could explain my scan & connections issues with these channels.

Regards

Baptiste Moraine

[bamo_4116701]

Hello,

Please find below the result of my investigation

I'm using the murata 1DX module (broadcom 43430 chip) on an Atmel SAMA5D31 platform running a Linux kernel 3.10.
My Hostapd version is 2.9 and wpa_supplicant version is v2.9.
The driver sources (cypress-backports-v5.4.18-2020_0402) are coming from the Cypress website : https://community.cypress.com/t5/Resource-Library/Cypress-Linux-WiFi-Driver-Release-FMAC-2020-04-02/...

I'm encounterring some difficulties when trying to update the module regulatory domain.

When scanning Wifi, I cannot see any access point set up on channels 12 or 13 and when I tried to set up my own access point, I encounterred an error only on these channels too.
By default the module does not allow to use wifi channels 12 and 13 that we want to address. I don't know for which country the module is set up by default but I want to set it up for french (FR) regulatory domain.

With the command "iw list" I can see that my module manages channels 1 to 14 and that it supports "set_channel" command :

# iw list          (or # iw phy)
Wiphy phy0
        max # scan SSIDs: 10
        max scan IEs length: 2048 bytes
        max # sched scan SSIDs: 0
        max # match sets: 0
        Retry short limit: 7
        Retry long limit: 4
        Coverage class: 0 (up to 0m)
        Device supports roaming.
        Supported Ciphers:
                * WEP40 (00-0f-ac:1)
                * WEP104 (00-0f-ac:5)
                * TKIP (00-0f-ac:2)
                * CCMP (00-0f-ac:4)
                * CMAC (00-0f-ac:6)
        Available Antennas: TX 0 RX 0
        Supported interface modes:
                 * IBSS
                 * managed
                 * AP
                 * P2P-client
                 * P2P-GO
                 * P2P-device
        Band 1:
                Capabilities: 0x1020
                        HT20
                        Static SM Power Save
                        RX HT20 SGI
                        No RX STBC
                        Max AMSDU length: 3839 bytes
                        DSSS/CCK HT40
                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
                Minimum RX AMPDU time spacing: 16 usec (0x07)
                HT TX/RX MCS rate indexes supported: 0-7
                Bitrates (non-HT):
                        * 1.0 Mbps
                        * 2.0 Mbps (short preamble supported)
                        * 5.5 Mbps (short preamble supported)
                        * 11.0 Mbps (short preamble supported)
                        * 6.0 Mbps
                        * 9.0 Mbps
                        * 12.0 Mbps
                        * 18.0 Mbps
                        * 24.0 Mbps
                        * 36.0 Mbps
                        * 48.0 Mbps
                        * 54.0 Mbps
                Frequencies:
                        * 2412 MHz [1] (20.0 dBm)
                        * 2417 MHz [2] (20.0 dBm)
                        * 2422 MHz [3] (20.0 dBm)
                        * 2427 MHz [4] (20.0 dBm)
                        * 2432 MHz [5] (20.0 dBm)
                        * 2437 MHz [6] (20.0 dBm)
                        * 2442 MHz [7] (20.0 dBm)
                        * 2447 MHz [8] (20.0 dBm)
                        * 2452 MHz [9] (20.0 dBm)
                        * 2457 MHz [10] (20.0 dBm)
                        * 2462 MHz [11] (20.0 dBm)
                        * 2467 MHz [12] (20.0 dBm)
                        * 2472 MHz [13] (20.0 dBm)
                        * 2484 MHz [14] (20.0 dBm)
        Supported commands:
                 * new_interface
                 * set_interface
                 * new_key
                 * start_ap
                 * set_bss
                 * join_ibss
                 * set_pmksa
                 * del_pmksa
                 * flush_pmksa
                 * remain_on_channel
                 * frame
                 * set_wiphy_netns
                 * set_channel
                 * start_p2p_device
                 * connect
                 * disconnect
                 * crit_protocol_start
                 * crit_protocol_stop
                 * Unknown command (122)
        Supported TX frame types:
                 * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * P2P-device: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
        Supported RX frame types:
                 * managed: 0x40 0xd0
                 * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
                 * P2P-client: 0x40 0xd0
                 * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
                 * P2P-device: 0x40 0xd0
        WoWLAN support:
                 * wake up on disconnect
                 * wake up on magic packet
                 * wake up on pattern match, up to 16 patterns of 1-128 bytes,
                   maximum packet offset 1500 bytes
        software interface modes (can always be added):
        valid interface combinations:
                 * #{ managed } <= 1, #{ P2P-device } <= 1, #{ P2P-client, P2P-GO } <= 1,
                   total <= 3, #channels <= 2
                 * #{ managed } <= 1, #{ AP } <= 1, #{ P2P-client } <= 1, #{ P2P-device } <= 1,
                   total <= 4, #channels <= 1
        Device supports scan flush.

At first I tried to retrieve an ARM compliant WL Tool version.
The imx32 and am335x versions I found on the internet were not executable on my Atmel SAMA5D platform.
Ubuntu's objdump did not recognized the architecture :
objdump -f wl
wl: file format elf32-little
architecture: UNKNOWN!, flags 0x00000112:
EXEC_P, HAS_SYMS, D_PAGED
start address 0x0000a130

I tried several other ways (not working) to change regulatory domain of the module :

- Adding "COUNTRY=FR" in wpa_supplicant configuration file

- Changing channel from iw command :

# iw dev wlan0 set channel 13
-> command failed: Operation not supported (-95)
-> This is odd because following "iw list" command result, this module should support this comand.
In the above line, I tested with "13" but I also passed channel "6" and I got the same result.

- Changing regulatory domain to "FR" via "iw reg" command :

# iw reg get
global
country 00: DFS-UNSET
        (2402 - 2472 @ 40), (6, 20), (N/A)
        (2457 - 2482 @ 20), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (2474 - 2494 @ 20), (6, 20), (N/A), NO-OFDM, PASSIVE-SCAN
        (5170 - 5250 @ 80), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (5250 - 5330 @ 80), (6, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
        (5490 - 5730 @ 160), (6, 20), (0 ms), DFS, PASSIVE-SCAN
        (5735 - 5835 @ 80), (6, 20), (N/A), PASSIVE-SCAN
        (57240 - 63720 @ 2160), (N/A, 0), (N/A)

# iw reg set FR

# iw reg get
global
country 00: DFS-UNSET
        (2402 - 2472 @ 40), (6, 20), (N/A)
        (2457 - 2482 @ 20), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (2474 - 2494 @ 20), (6, 20), (N/A), NO-OFDM, PASSIVE-SCAN
        (5170 - 5250 @ 80), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (5250 - 5330 @ 80), (6, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
        (5490 - 5730 @ 160), (6, 20), (0 ms), DFS, PASSIVE-SCAN
        (5735 - 5835 @ 80), (6, 20), (N/A), PASSIVE-SCAN
        (57240 - 63720 @ 2160), (N/A, 0), (N/A)

-> Nothing changed. It seems "iw" cannot retrieve any data from the radio module.

At the end, the only working solution I found out was to edit the "/lib/firmware/brcm/brcmfmac43430-sdio.txt" file and replace "ccode=ALL" by "ccode=FR" then to reboot my board in order to get the new configuration taken into account.

Is there a more classic way of changing regulatory domain of cypress radio modules ?

Also, is there a standard way to get current status of the module ? For exemple which channel is currently available and which regulatory domain is currently set ?

Regards

[Aditi_B · Accepted solution]

Hi,

The best thing would be to get WL Tool for your use case. It'll simply resolve all the issues that you're facing. The module partner will provide you the WL Tool. You can contact them and then you can use the command 'wl country country_code' to do the required.

Thanks

Aditi