펌웨어 다운로드 하기
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sd8787_uapsta.bin 파일을 커널 소스에 firmware/mrvl 디렉토리에 복사를 합니다. $mkdir mrvl
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$ ls firmware/mrvl sd8787_uapsta.bin |
회로도를 보면 아래와 같습니다.
WIFI_EN <-> GPIO4 ,
WIFI_RSTN <-> GPIO_5
연결이 되어 있습니다.
datasheet를 참조하면
WIFI_RSTN은 GPIO1_5 GPIO로 설정
WIFI_EN <-> GPIO4<->GPIO1_4 GPIO로 설정
"arch/arm/boot/dts/imx6qdl-sabresd.dtsi" 에 추가
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mango_wifi_reset: mango-wifi-reset { compatible = "gpio-reset"; reset-gpios = <&gpio1 5 GPIO_ACTIVE_LOW>; reset-delay-us = <100000>; initially-in-reset; #reset-cells = <0>; }; |
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&usdhc2 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_usdhc2_1>; #if 0 cd-gpios = <&gpio2 2 0>; wp-gpios = <&gpio2 3 0>; #endif resets =
<&mango_wifi_reset>; enable-gpio = <&gpio1 4 0>; no-1-8-v; keep-power-in-suspend; enable-sdio-wakeup; status = "okay"; }; |
SDIO 2번 채널에 WiFi 모듈을 연결을 할 수 있도록 회로가 되어 있습니다.
"drivers/mmc/host/sdhci-esdhc-imx.c" 파일에 추가
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sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, struct esdhc_platform_data *boarddata) 함수에 내용 추가
device_reset(&pdev->dev);
enable_gpio = of_get_named_gpio(np, "enable-gpio", 0); if (gpio_is_valid(enable_gpio)) { status = devm_gpio_request_one(&pdev->dev,enable_gpio, GPIOF_OUT_INIT_HIGH,NULL); if(status < 0 ) { dev_err(&pdev->dev, "Wifi EN Request Fail status %d\n" ,status); return status; }
} return 0; |
커널 컴파일 후 커널 로그에서 아래와 같이 디버깅 메시지가 나오면,
인식이 된 것입니다.
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mmc2: SDHCI controller on 2198000.usdhc [2198000.usdhc] using ADMA mmc1:
new high speed SDIO card at address 0001 |
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CONFIG_MWIFIEX_SDIO=m CONFIG_MWIFIEX=y CONFIG_WIRELESS_EXT=y CONFIG_WEXT_CORE=y CONFIG_WEXT_PROC=y CONFIG_WEXT_SPY=y CONFIG_WEXT_PRIV=y CONFIG_CFG80211=y CONFIG_CFG80211_WEXT=y CONFIG_LIB80211=y |
컴파일을 하면 커널 object 파일이 만들어 집니다.
모듈로 컴파일 방법
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$ vi build_kernel 수정 all|*) echo make -j$CPU_JOB_NUM uImage make -j$CPU_JOB_NUM uImage
make -j$CPU_JOB_NUM modules |
컴파일 결과
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$ ls drivers/net/wireless/mwifiex/ 11n_aggr.c cfg80211.o ie.o mwifiex_sdio.ko |
sd8787_uapsta.bin
파일 커널에 포함해서 컴파일 하기
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Generic Driver Options->
(mrvl/sd8787_uapsta.bin) External firmware blobs to build into the kernel binary x x x x (firmware) Firmware blobs root directory (NEW) |
CONFIG_EXTRA_FIRMWARE="sd8787_uapsta.bin"
CONFIG_EXTRA_FIRMWARE_DIR="firmware"
컴파일 결과 아래와 같이 커널 이미지에 포함이 된 것을 볼 수 있습니다.
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$ ls firmware/sd8787_uapsta.bin* firmware/sd8787_uapsta.bin firmware/sd8787_uapsta.bin.gen.S firmware/sd8787_uapsta.bin.gen.o |
arch/arm/boot/dts/imx6qdl.dtsi
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usdhc2 { pinctrl_usdhc2_1: usdhc2grp-1 { fsl,pins = < MX6QDL_PAD_SD2_CMD__SD2_CMD 0x17059 MX6QDL_PAD_SD2_CLK__SD2_CLK 0x10059 MX6QDL_PAD_SD2_DAT0__SD2_DATA0 0x17059 MX6QDL_PAD_SD2_DAT1__SD2_DATA1 0x17059 MX6QDL_PAD_SD2_DAT2__SD2_DATA2 0x17059 MX6QDL_PAD_SD2_DAT3__SD2_DATA3 0x17059 MX6QDL_PAD_NANDF_D4__SD2_DATA4 0x17059 MX6QDL_PAD_NANDF_D5__SD2_DATA5 0x17059 MX6QDL_PAD_NANDF_D6__SD2_DATA6 0x17059 MX6QDL_PAD_NANDF_D7__SD2_DATA7 0x17059 >; };
pinctrl_usdhc2_2: usdhc2grp-2
{ fsl,pins = <
MX6QDL_PAD_SD2_CMD__SD2_CMD
0x17059
MX6QDL_PAD_SD2_CLK__SD2_CLK
0x10059
MX6QDL_PAD_SD2_DAT0__SD2_DATA0 0x17059 MX6QDL_PAD_SD2_DAT1__SD2_DATA1
0x17059
MX6QDL_PAD_SD2_DAT2__SD2_DATA2 0x17059
MX6QDL_PAD_SD2_DAT3__SD2_DATA3 0x17059
>; }; }; |
만들어진 파일을 파일 시스템에 복사를 합니다.
KO 파일을 image 폴더에 복사를 합니다.
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$ cp drivers/net/wireless/mwifiex/mwifiex_sdio.ko ../image |
Micro SD 카드를 리눅스 PC에 삽입을 합니다.
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$ mkdir rootfs $ dmesg | tail [13882821.951030] sdg: sdg1 sdg2 sdg3 sdg4 [13882828.847001] EXT4-fs (sdg2): mounted filesystem with ordered data mode. Opts: (null) [13882860.785736] EXT4-fs (sdg3): mounted filesystem with ordered data mode. Opts: (null) [13882866.357704] sdg: detected capacity change from 8068792320 to 0 [13903180.931517] sd 228:0:0:0: [sdg] 15628288 512-byte logical blocks: (8.00 GB/7.45 GiB) [13903180.933074] sd 228:0:0:0: [sdg] No Caching mode page present [13903180.933077] sd 228:0:0:0: [sdg] Assuming drive cache: write through [13903180.935187] sd 228:0:0:0: [sdg] No Caching mode page present [13903180.935190] sd 228:0:0:0: [sdg] Assuming drive cache: write through [13903180.935799] sdg: sdg1 sdg2
$ sudo mount /dev/sdg2 rootfs $ sudo cp mwifiex_sdio.ko rootfs/home/root/ $ sudo umount /dev/sdg2 |
mwifiex_sdio.ko 파일을 root 디렉토리에 복사를 합니다.
Micro SD 카드를 보드에 삽입하고 부팅을 합니다.
부팅 후
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imx6qsabresd login: root root@imx6qsabresd:~# |
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root@imx6qsabresd:~# insmod mwifiex_sdio.ko root@imx6qsabresd:~# mwifiex_sdio mmc1:0001:1: WLAN FW is active mwifiex_sdio mmc1:0001:1: ignoring F/W country code US mwifiex_sdio mmc1:0001:1: driver_version = mwifiex 1.0 (14.66.35.p52) IPv6: ADDRCONF(NETDEV_CHANGE): mlan0: link becomes ready |
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root@imx6qsabresd:~# ifconfig -a eth0 Link encap:Ethernet HWaddr 7E:6A:A1:34:C2:A1 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:4 errors:0 dropped:0 overruns:0 frame:0 TX packets:4 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:280 (280.0 B) TX bytes:280 (280.0 B)
mlan0 Link encap:Ethernet HWaddr AC:3F:A4:4F:9B:78 inet6 addr: fe80::ae3f:a4ff:fe4f:9b78/64
Scope:Link UP BROADCAST MULTICAST MTU:1500
Metric:1 RX packets:0 errors:0 dropped:0
overruns:0 frame:0 TX packets:0 errors:6 dropped:0
overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
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root@imx6qsabresd:~# iwlist mlan0 scan | grep CRZ ESSID:"CRZ_icanjji" ESSID:"CRZ_ybkim" ESSID:"CRZ-TOM" |
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root@imx6qsabresd:~# ifconfig mlan0 up root@imx6qsabresd:~# iwconfig mlan0 essid CRZ_icanjji root@imx6qsabresd:~# iwconfig lo no wireless extensions.
mlan0 IEEE 802.11bgn ESSID:"CRZ_icanjji" Mode:Managed Frequency:2.412 GHz Access Point: 00:26:66:1A:55:AC Bit Rate=150 Mb/s Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:on Link Quality=33/70 Signal level=-77 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0
eth0 no wireless extensions.
tunl0 no wireless extensions.
root@imx6qsabresd:~# udhcpc -imlan0 udhcpc (v1.22.1) started Sending discover... Sending select for 192.168.100.2... Lease of 192.168.100.2 obtained, lease time 7200 /etc/udhcpc.d/50default: Adding DNS 168.126.63.1 /etc/udhcpc.d/50default: Adding DNS 168.126.63.2 |
Iperf 테스트
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root@imx6qsabresd:~# iperf -c 192.168.100.12 -i 1 -t 10 ------------------------------------------------------------ Client connecting to 192.168.100.12, TCP port 5001 TCP window size: 20.7 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.100.2 port 56055 connected with 192.168.100.12 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0- 1.0 sec 384 KBytes 3.15 Mbits/sec [ 3] 1.0- 2.0 sec 1.25 MBytes 10.5 Mbits/sec [ 3] 2.0- 3.0 sec 1.25 MBytes 10.5 Mbits/sec [ 3] 3.0- 4.0 sec 1.38 MBytes 11.5 Mbits/sec [ 3] 4.0- 5.0 sec 640 KBytes 5.24 Mbits/sec [ 3] 5.0- 6.0 sec 512 KBytes 4.19 Mbits/sec [ 3] 6.0- 7.0 sec 512 KBytes 4.19 Mbits/sec [ 3] 7.0- 8.0 sec 384 KBytes 3.15 Mbits/sec [ 3] 8.0- 9.0 sec 768 KBytes 6.29 Mbits/sec [ 3] 9.0-10.0 sec 1.25 MBytes 10.5 Mbits/sec [ 3] 0.0-10.1 sec 8.38 MBytes 6.96 Mbits/sec |
아래와 같이 에러 발생 시
root@imx6qsabresd:~#
insmod mwifiex_sdio.ko
mwifiex_sdio
mmc1:0001:1: Failed to get firmware mrvl/sd8787_uapsta.bin
$ cd firmware
$ mkdir mrvl
$ cp sd8787_uapsta.bin mrvl/
하고 다시 커널을 컴파일 한다.
root@imx6qsabresd:~# cfg80211: Calling CRDA for country: KR
cfg80211: Calling CRDA to update world regulatory domain
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CONFIG_LIB80211=y |
내용