Cellular Modem Information » Qualcomm Linux Modems by Quectel & Co

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h1. EC25

Below testing has been made on an EC25-E Revision: EC25EFAR02A03M4G (according to ATI0 and the label on the device)

h2. serial console

In the EC25-E miniPCI that was analyzed, the serial console of bootloader and Linux appears to be active on pins 11+12 of the LGA module (DBG_RXD, DBG_TXD). The console is at 1.8V and at 115200bps.

h2. lsusb output

<pre>

Bus 001 Device 058: ID 2c7c:0125··

Device Descriptor:

  bLength                18

  bDescriptorType         1

  bcdUSB               2.00

  bDeviceClass            0 (Defined at Interface level)

  bDeviceSubClass         0·

  bDeviceProtocol         0·

  bMaxPacketSize0        64

  idVendor           0x2c7c·

  idProduct          0x0125·

  bcdDevice            3.18

  iManufacturer           1 Android

  iProduct                2 Android

  iSerial                 0·

  bNumConfigurations      1

  Configuration Descriptor:

    bLength                 9

    bDescriptorType         2

    wTotalLength          209

    bNumInterfaces          5

    bConfigurationValue     1

    iConfiguration          0·

    bmAttributes         0xa0

      (Bus Powered)

      Remote Wakeup

    MaxPower              500mA

    Interface Descriptor:

      bLength                 9

      bDescriptorType         4

      bInterfaceNumber        0

      bAlternateSetting       0

      bNumEndpoints           2

      bInterfaceClass       255 Vendor Specific Class

      bInterfaceSubClass    255 Vendor Specific Subclass

      bInterfaceProtocol    255 Vendor Specific Protocol

      iInterface              0·

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x81  EP 1 IN

        bmAttributes            2

          Transfer Type            Bulk

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0200  1x 512 bytes

        bInterval               0

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x01  EP 1 OUT

        bmAttributes            2

          Transfer Type            Bulk

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0200  1x 512 bytes

        bInterval               0

    Interface Descriptor:

      bLength                 9

      bDescriptorType         4

      bInterfaceNumber        1

      bAlternateSetting       0

      bNumEndpoints           3

      bInterfaceClass       255 Vendor Specific Class

      bInterfaceSubClass      0·

      bInterfaceProtocol      0·

      iInterface              0·

      ** UNRECOGNIZED:  05 24 00 10 01

      ** UNRECOGNIZED:  05 24 01 00 00

      ** UNRECOGNIZED:  04 24 02 02

      ** UNRECOGNIZED:  05 24 06 00 00

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x83  EP 3 IN

        bmAttributes            3

          Transfer Type            Interrupt

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x000a  1x 10 bytes

        bInterval               9

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x82  EP 2 IN

        bmAttributes            2

          Transfer Type            Bulk

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0200  1x 512 bytes

        bInterval               0

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x02  EP 2 OUT

        bmAttributes            2

          Transfer Type            Bulk

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0200  1x 512 bytes

        bInterval               0

    Interface Descriptor:

      bLength                 9

      bDescriptorType         4

      bInterfaceNumber        2

      bAlternateSetting       0

      bNumEndpoints           3

      bInterfaceClass       255 Vendor Specific Class

      bInterfaceSubClass      0·

      bInterfaceProtocol      0·

      iInterface              0·

      ** UNRECOGNIZED:  05 24 00 10 01

      ** UNRECOGNIZED:  05 24 01 00 00

      ** UNRECOGNIZED:  04 24 02 02

      ** UNRECOGNIZED:  05 24 06 00 00

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x85  EP 5 IN

        bmAttributes            3

          Transfer Type            Interrupt

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x000a  1x 10 bytes

        bInterval               9

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x84  EP 4 IN

        bmAttributes            2

          Transfer Type            Bulk

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0200  1x 512 bytes

        bInterval               0

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x03  EP 3 OUT

        bmAttributes            2

          Transfer Type            Bulk

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0200  1x 512 bytes

        bInterval               0

    Interface Descriptor:

      bLength                 9

      bDescriptorType         4

      bInterfaceNumber        3

      bAlternateSetting       0

      bNumEndpoints           3

      bInterfaceClass       255 Vendor Specific Class

      bInterfaceSubClass      0·

      bInterfaceProtocol      0·

      iInterface              0·

      ** UNRECOGNIZED:  05 24 00 10 01

      ** UNRECOGNIZED:  05 24 01 00 00

      ** UNRECOGNIZED:  04 24 02 02

      ** UNRECOGNIZED:  05 24 06 00 00

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x87  EP 7 IN

        bmAttributes            3

          Transfer Type            Interrupt

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x000a  1x 10 bytes

        bInterval               9

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x86  EP 6 IN

        bmAttributes            2

          Transfer Type            Bulk

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0200  1x 512 bytes

        bInterval               0

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x04  EP 4 OUT

        bmAttributes            2

          Transfer Type            Bulk

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0200  1x 512 bytes

        bInterval               0

    Interface Descriptor:

      bLength                 9

      bDescriptorType         4

      bInterfaceNumber        4

      bAlternateSetting       0

      bNumEndpoints           3

      bInterfaceClass       255 Vendor Specific Class

      bInterfaceSubClass    255 Vendor Specific Subclass

      bInterfaceProtocol    255 Vendor Specific Protocol

      iInterface              0·

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x89  EP 9 IN

        bmAttributes            3

          Transfer Type            Interrupt

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0008  1x 8 bytes

        bInterval               9

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x88  EP 8 IN

        bmAttributes            2

          Transfer Type            Bulk

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0200  1x 512 bytes

        bInterval               0

      Endpoint Descriptor:

        bLength                 7

        bDescriptorType         5

        bEndpointAddress     0x05  EP 5 OUT

        bmAttributes            2

          Transfer Type            Bulk

          Synch Type               None

          Usage Type               Data

        wMaxPacketSize     0x0200  1x 512 bytes

        bInterval               0

Device Qualifier (for other device speed):

  bLength                10

  bDescriptorType         6

  bcdUSB               2.00

  bDeviceClass            0 (Defined at Interface level)

  bDeviceSubClass         0·

  bDeviceProtocol         0·

  bMaxPacketSize0        64

  bNumConfigurations      1

Device Status:     0x0000

  (Bus Powered)

</pre>

h3. ps

<pre>

root@mdm9607-perf:/firmware/image# ps axuw

PID   USER     TIME   COMMAND

    1 root       0:06 init [5]

    2 root       0:00 [kthreadd]

    3 root       0:02 [ksoftirqd/0]

    4 root       0:04 [kworker/0:0]

    5 root       0:00 [kworker/0:0H]

    6 root       0:00 [kworker/u2:0]

    7 root       0:00 [rcu_preempt]

    8 root       0:00 [rcu_sched]

    9 root       0:00 [rcu_bh]

   10 root       0:00 [khelper]

   11 root       0:00 [netns]

   12 root       0:00 [perf]

   13 root       0:00 [msm_watchdog]

   14 root       0:00 [smd_channel_clo]

   15 root       0:00 [smsm_cb_wq]

   17 root       0:00 [deferwq]

   19 root       0:00 [irq/52-cpr]

   20 root       0:00 [mpm]

   29 root       0:00 [writeback]

   30 root       0:00 [crypto]

   31 root       0:00 [bioset]

   32 root       0:00 [kblockd]

   33 root       0:00 [system]

   34 root       0:00 [devfreq_wq]

   35 root       0:00 [cfg80211]

   36 root       0:00 [power_off_alarm]

   37 root       0:00 [kswapd0]

   38 root       0:00 [fsnotify_mark]

   46 root       0:00 [glink_ssr_wq]

   47 root       0:00 [apr_driver]

   48 root       0:00 [k_hsuart]

   49 root       0:00 [msm_serial_hs_0]

   50 root       0:00 [msm_serial_hs_0]

   51 root       0:00 [diag_real_time_]

   52 root       0:00 [diag_wq]

   53 root       0:00 [DIAG_USB_diag]

   54 root       0:00 [diag_cntl_wq]

   55 root       0:00 [diag_dci_wq]

   56 root       0:00 [DIAG_SMD_MODEM_]

   57 root       0:00 [DIAG_SMD_MODEM_]

   58 root       0:00 [DIAG_SMD_MODEM_]

   59 root       0:00 [DIAG_SMD_MODEM_]

   60 root       0:00 [DIAG_SMD_MODEM_]

   61 root       0:00 [DIAG_SMD_LPASS_]

   62 root       0:00 [DIAG_SMD_LPASS_]

   63 root       0:00 [DIAG_SMD_LPASS_]

   64 root       0:00 [DIAG_SMD_LPASS_]

   65 root       0:00 [DIAG_SMD_LPASS_]

   66 root       0:00 [DIAG_SMD_WCNSS_]

   67 root       0:00 [DIAG_SMD_WCNSS_]

   68 root       0:00 [DIAG_SMD_WCNSS_]

   69 root       0:00 [DIAG_SMD_WCNSS_]

   70 root       0:00 [DIAG_SMD_WCNSS_]

   71 root       0:00 [DIAG_SMD_SENSOR]

   72 root       0:00 [DIAG_SMD_SENSOR]

   73 root       0:00 [DIAG_SMD_SENSOR]

   74 root       0:00 [DIAG_SMD_SENSOR]

   75 root       0:00 [DIAG_SMD_SENSOR]

   76 root       0:00 [DIAG_SOCKMODEM_]

   77 root       0:00 [DIAG_SOCKMODEM_]

   78 root       0:00 [DIAG_SOCKMODEM_]

   79 root       0:00 [DIAG_SOCKMODEM_]

   80 root       0:00 [DIAG_SOCKMODEM_]

   81 root       0:00 [DIAG_SOCKLPASS_]

   82 root       0:00 [DIAG_SOCKLPASS_]

   83 root       0:00 [DIAG_SOCKLPASS_]

   84 root       0:00 [DIAG_SOCKLPASS_]

   85 root       0:00 [DIAG_SOCKLPASS_]

   86 root       0:00 [DIAG_SOCKWCNSS_]

   87 root       0:00 [DIAG_SOCKWCNSS_]

   88 root       0:00 [DIAG_SOCKWCNSS_]

   89 root       0:00 [DIAG_SOCKWCNSS_]

   90 root       0:00 [DIAG_SOCKWCNSS_]

   91 root       0:00 [DIAG_SOCKSENSOR]

   92 root       0:00 [DIAG_SOCKSENSOR]

   93 root       0:00 [DIAG_SOCKSENSOR]

   94 root       0:00 [DIAG_SOCKSENSOR]

   95 root       0:00 [DIAG_SOCKSENSOR]

   96 root       0:00 [DIAG_CNTL_SOCKE]

   97 root       0:00 [k_gserial]

   98 root       0:00 [k_ipa_usb]

   99 root       0:00 [uether]

  100 root       0:00 [k_gbridge]

  101 root       0:00 [therm_core:noti]

  102 root       0:00 [therm_core:noti]

  103 root       0:00 [therm_core:noti]

  104 root       0:00 [therm_core:noti]

  105 root       0:00 [therm_core:noti]

  106 root       0:00 [irq/216-tsens_i]

  107 root       0:00 [therm_core:noti]

  108 root       0:00 [therm_core:noti]

  109 root       0:00 [cfinteractive]

  110 root       0:00 [irq/170-7824900]

  111 root       0:00 [irq/155-mmc0]

  112 root       0:03 [irq/253-7864900]

  113 root       0:00 [irq/157-mmc1]

  114 root       0:00 [usb_bam_wq]

  115 root       0:00 [qsmd]

  116 root       0:00 [ipv6_addrconf]

  117 root       0:00 [msm_ipc_router]

  118 root       0:00 [irq/441-modem]

  119 root       0:00 [sysmon_wq]

  120 root       0:00 [qmi_svc_event_w]

  122 root       0:00 [bam_dmux_rx]

  123 root       0:00 [bam_dmux_tx]

  124 root       0:00 [ubi_bgt0d]

  125 root       0:00 [ubi_bgt1d]

  126 root       0:00 [k_bam_data]

  127 root       0:00 [f_mtp]

  129 root       0:00 [msm_thermal:fre]

  130 root       0:00 [msm_thermal:the]

  131 root       0:00 [ubifs_bgt0_0]

  132 root       0:00 [IPCRTR]

  133 root       0:00 [modem_IPCRTR]

  186 root       0:00 [ubifs_bgt0_1]

  195 root       0:00 /sbin/adbd

  216 root       0:00 psmd

  324 root       0:00 ipacm_perf

  333 root       0:00 ipacmdiag

  343 root       0:00 QCMAP_ConnectionManager /etc/mobileap_cfg.xml d

  347 root       0:00 /usr/bin/qti

  358 root       0:00 /sbin/tftp_server

  359 root       0:00 /sbin/fs-scrub-daemon

  377 root       0:00 /usr/bin/quectel_pcm_daemon

  397 root       0:00 [sh]

  435 root       0:00 /sbin/syslogd -n -C64

  444 root       0:00 [k_gsmd]

  445 root       0:00 [k_gbam]

  459 root       0:00 /usr/bin/qmuxd

  463 root       0:00 /usr/bin/thermal-engine

  468 root       0:00 /usr/bin/netmgrd

  497 root       0:00 /usr/bin/qmi_shutdown_modem

  504 root       0:01 /usr/bin/quectel-gps-handle

  518 root       0:00 /usr/bin/quectel_monitor_daemon

  537 root       1:30 /usr/bin/quectel_daemon

  544 root       0:00 /usr/bin/quectel_psm_aware

  563 root       0:00 /usr/bin/quectel-remotefs-service

  672 root       0:20 alsaucm_test

  811 www-data   0:02 /usr/sbin/lighttpd -f /etc/lighttpd.conf

  818 nobody     0:00 dnsmasq -i bridge0 -I lo -z --dhcp-range=bridge0,192.168.

  824 root       0:00 eMBMs_TunnelingModule

  828 root       0:00 /usr/bin/qmi_ip_multiclient /etc/qmi_ip_cfg.xml

  887 root       0:00 wlan_services

 1004 messageb   0:00 /usr/bin/dbus-daemon --system

 1022 root       0:00 /sbin/reboot-daemon

 1024 diag       0:02 /usr/bin/diagrebootapp

 1029 root       1:24 /usr/bin/atfwd_daemon

 1066 root       0:00 /usr/bin/pdc_daemon

 1079 root       0:00 /usr/bin/mbimd

 1080 root       0:00 -sh

 1081 root       0:00 /usr/bin/time_daemon

 1177 root       0:00 [kworker/0:1]

 1202 root       0:00 [kworker/u2:1]

 1205 root       0:09 [kworker/u2:2]

 1206 root       0:02 [kworker/u2:3]

 1213 root       0:00 [kworker/u2:4]

 1233 root       0:00 ps axuw

</pre>