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Old 06-08-2013, 04:03 PM   #1
a3nm
Member
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Posts: 11
Karma: 204
Join Date: May 2013
Device: Kobo Glo
Getting WiFi to work with a custom kernel on Glo

Hi,

Because the stock Glo kernel has no iptables support, I have compiled a custom kernel with this option from the original kernel : https://github.com/kobolabs/Kobo-Rea....6.35.3.tar.gz

I managed to write it to the Glo's internal SD card using dd if=uImage of=/dev/mmcblk0 bs=512 seek=2048 and to get the device to boot. However, of course, the modules used by the device need to be upgraded. I managed to compile functional versions of the USB network interface modules in /drivers/ntx508/usb/gadget and even managed to compile a new /drivers/ntx508/wifi/dhd.ko using https://github.com/kobolabs/Kobo-Rea...2-03112011.tgz

However, after all this, though the device is usable and I can connect to the device from USB (indicating that the relevant modules are operational), the WiFi is not working. I can perform:
Code:
busybox insmod /drivers/ntx508/wifi/dhd.ko
busybox insmod /drivers/ntx508/wifi/sdio_wifi_pwr.ko
and an eth0 interface shows up in /sbin/ifconfig -a. However, trying to run "/sbin/ifconfig eth0 up" fails with "ifconfig: SIOCSIFFLAGS: Operation not permitted" (though I'm root) and "wlarm_le -i eth0 up" fails with "wlarm_le: wl driver adapter not found". Interestingly, trying to "rmmod sdio_wifi_pwr" triggers an oops (that gets written to dmesg):
Code:
kernel BUG at drivers/mmc/core/sdio_io.c:29!
Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = 80004000
[00000000] *pgd=00000000
Internal error: Oops: 817 [#1] PREEMPT
last sysfs file: /sys/devices/platform/pmic_battery.1/power_supply/mc13892_bat/status
Modules linked in: dhd ipv6 g_ether arcotg_udc [last unloaded: sdio_wifi_pwr]
CPU: 0    Not tainted  (2.6.35.3-850-gbc67621a3nm+ #9)
PC is at __bug+0x1c/0x28
LR is at __bug+0x18/0x28
pc : [<80027c28>]    lr : [<80027c24>]    psr: 60000013
sp : 8e0f9dd8  ip : 900fe000  fp : 00000000
r10: 00000001  r9 : 7f085718  r8 : 8e0f9e00
r7 : 7f087700  r6 : 8e0f9e47  r5 : 00000004  r4 : 0001000e
r3 : 00000000  r2 : 8e0f9dcc  r1 : 80321bd4  r0 : 00000033
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
Control: 10c5387d  Table: 7e08c019  DAC: 00000017
Process kmmcd (pid: 153, stack limit = 0x8e0f82e8)
Stack: (0x8e0f9dd8 to 0x8e0fa000)
9dc0:                                                       00000000 8020bbe0
9de0: 8d567304 7f07e7d8 8004eb4c 8e027140 803a15c8 8e027170 8e027140 803a15c8
9e00: ffffffff 00000000 00000002 8e0f9e68 00000000 8d5679e0 00000001 0001000e
9e20: 00000000 00000000 00000000 7f07e8ac 8e0f9e47 00000001 0001000e 7f07f5c8
9e40: 8d5679e0 10000001 8d760000 8d5679e0 8e0f9e68 00000001 8e0861a0 7f079608
9e60: 8e0f9e68 ffffe925 8e0f9e7c 00000000 0000001a 8029748c a0000013 00000000
9e80: 00200200 8d760000 8eb730ac 8e4a1540 00000001 8e0861a0 00000000 7f079878
9ea0: 8d760000 7f07b4a4 8d760000 00000001 8e0f9eb0 0000027f 8eb73000 8eb730ac
9ec0: 8e1b96c0 8eb7303c 8e0861a0 7f06b814 8eb73000 7f06b9a4 8e4a1540 8d760000
9ee0: 8e4a1540 7f0874c8 00000000 7f079c64 8eb730ac 7f0874bc 8e4a1a40 7f07fc50
9f00: 8e5dfe00 8e5dfe08 7f08559c 8020ab18 8e5dfe08 7f08559c 8ebacc08 801ada88
9f20: 00000000 8e5dfe3c 8e5dfe08 801adaf0 00000000 8e5dfe08 8e086000 801ad68c
9f40: 8e5dfe08 801ab4e0 8e5dfe08 8e086000 0000006f 8020ad80 00000001 8020a1cc
9f60: 00000000 8e086000 ffffff85 8e17c340 80205f58 8020a258 8020a200 8e0861a0
9f80: 8e086000 80205fe4 8e0861a0 8e0f9fac 8e17c340 8e0f8000 8e0861a4 8e17c340
9fa0: 80205f58 80065090 8e0f9fd4 00000000 8e027140 8006902c 8e0f9fb8 8e0f9fb8
9fc0: 8e029f30 80064f28 8e17c340 00000013 00000000 80068964 00000000 00000000
9fe0: 8e0f9fe0 8e0f9fe0 8e029f30 800688ec 800258b4 800258b4 fffbffff ffffffff
[<80027c28>] (__bug+0x1c/0x28) from [<8020bbe0>] (sdio_claim_host+0x2c/0x40)
[<8020bbe0>] (sdio_claim_host+0x2c/0x40) from [<7f07e7d8>] (sdioh_request_byte+0x19c/0x25
0 [dhd])
[<7f07e7d8>] (sdioh_request_byte+0x19c/0x250 [dhd]) from [<7f07e8ac>] (sdioh_cfg_write+0x
20/0x24 [dhd])
[<7f07e8ac>] (sdioh_cfg_write+0x20/0x24 [dhd]) from [<7f07f5c8>] (bcmsdh_cfg_write+0x4c/0
x88 [dhd])
[<7f07f5c8>] (bcmsdh_cfg_write+0x4c/0x88 [dhd]) from [<7f079608>] (dhdsdio_htclk.isra.1+0
x40/0x260 [dhd])
[<7f079608>] (dhdsdio_htclk.isra.1+0x40/0x260 [dhd]) from [<7f079878>] (dhdsdio_clkctl.is
ra.2+0x50/0xd0 [dhd])
[<7f079878>] (dhdsdio_clkctl.isra.2+0x50/0xd0 [dhd]) from [<7f07b4a4>] (dhd_bus_stop+0x58
/0x24c [dhd])
[<7f07b4a4>] (dhd_bus_stop+0x58/0x24c [dhd]) from [<7f06b814>] (dhd_bus_detach+0x2c/0x44 
[dhd])
[<7f06b814>] (dhd_bus_detach+0x2c/0x44 [dhd]) from [<7f06b9a4>] (dhd_detach+0x178/0x1d8 [
dhd])
[<7f079c64>] (dhdsdio_release+0x38/0x100 [dhd]) from [<7f07fc50>] (bcmsdh_remove+0x1c/0x9
0 [dhd])
[<7f07fc50>] (bcmsdh_remove+0x1c/0x90 [dhd]) from [<8020ab18>] (sdio_bus_remove+0x1c/0x58
)
[<8020ab18>] (sdio_bus_remove+0x1c/0x58) from [<801ada88>] (__device_release_driver+0x84/
0xd0)
[<801ada88>] (__device_release_driver+0x84/0xd0) from [<801adaf0>] (device_release_driver
+0x1c/0x28)
[<801adaf0>] (device_release_driver+0x1c/0x28) from [<801ad68c>] (bus_remove_device+0x74/
0x84)
[<801ad68c>] (bus_remove_device+0x74/0x84) from [<801ab4e0>] (device_del+0x110/0x16c)
[<801ab4e0>] (device_del+0x110/0x16c) from [<8020ad80>] (sdio_remove_func+0x1c/0x28)
[<8020ad80>] (sdio_remove_func+0x1c/0x28) from [<8020a1cc>] (mmc_sdio_remove+0x48/0x7c)
[<8020a1cc>] (mmc_sdio_remove+0x48/0x7c) from [<8020a258>] (mmc_sdio_detect+0x58/0x7c)
[<8020a258>] (mmc_sdio_detect+0x58/0x7c) from [<80205fe4>] (mmc_rescan+0x8c/0x308)
[<80205fe4>] (mmc_rescan+0x8c/0x308) from [<80065090>] (worker_thread+0x168/0x218)
[<80065090>] (worker_thread+0x168/0x218) from [<80068964>] (kthread+0x78/0x84)
[<80068964>] (kthread+0x78/0x84) from [<800258b4>] (kernel_thread_exit+0x0/0x8)
Code: e59f0010 e1a01003 eb09b050 e3a03000 (e5833000)
Has anyone gotten the WiFi to work with a custom kernel for the Kobo Glo? My prime suspect is this sdio_wifi_pwr that should probably be recompiled somehow, but I do not know where this file comes from and how to recompile it (Google isn't very helpful). Any ideas?

Thanks!
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Old 06-11-2013, 06:13 AM   #2
giorgio130
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Device: Kobo Glo and Aura HD
sdio_wifi_pwr.c is included in the kernel source, if you made a "normal" kernel build with proper configuration it should be drivers/mmc/card/sdio_wifi_pwr.ko
Try to load it!
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