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Disable DMA in the MUSB driver

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This commit is contained in:
Michal Moskal 2017-07-27 12:49:34 +01:00
parent 8f9b9a5e4e
commit 3edceb248d
3 changed files with 27 additions and 5 deletions
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4
brick/scripts/README.md
View File

@ -8,3 +8,7 @@ Additionally, the `edimax01.ko` is replaced by now much more popular `rtl8192cu.
The init script has a hook for running a shell script from `/mnt/ramdisk/`. This can be used
for testing different modules etc.
The kernel command line has been modified to:
* disable DMA for the MUSB driver - otherwise the mass storage device is very unstable
* increase the size of dmesg buffer to 128k

23
brick/scripts/ev3-fs.patch
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@ -1,7 +1,15 @@
diff -ur orig-ev3/etc/init.d/ev3init.sh dev-ev3/etc/init.d/ev3init.sh
--- orig-ev3/etc/init.d/ev3init.sh 1970-01-01 01:00:00.000000000 +0100
+++ dev-ev3/etc/init.d/ev3init.sh 2017-07-25 15:55:03.642866971 +0100
@@ -60,3 +60,6 @@
+++ dev-ev3/etc/init.d/ev3init.sh 2017-07-27 12:19:43.195041798 +0100
@@ -1,5 +1,7 @@
#!/bin/sh
+echo Y > /sys/module/printk/parameters/time
+
bluetoothd -n > /dev/null 2>&1 &
echo "Setting up VirtualDrive...";
@@ -60,3 +62,6 @@
sleep 2
hciattach /dev/ttyS2 texas 2000000 "flow" "nosleep" $STRING
sdptool add SP
@ -11,7 +19,7 @@ diff -ur orig-ev3/etc/init.d/ev3init.sh dev-ev3/etc/init.d/ev3init.sh
Only in orig-ev3/home/root/lms2012/sys: exit~
diff -ur orig-ev3/home/root/lms2012/sys/init dev-ev3/home/root/lms2012/sys/init
--- orig-ev3/home/root/lms2012/sys/init 1970-01-01 01:00:00.000000000 +0100
+++ dev-ev3/home/root/lms2012/sys/init 2017-07-26 18:36:03.814459337 +0100
+++ dev-ev3/home/root/lms2012/sys/init 2017-07-27 12:23:43.072605126 +0100
@@ -5,13 +5,15 @@
var=$(printf 'HostStr=%s SerialStr=%s' $(cat /home/root/lms2012/sys/settings/BrickName) $(cat /home/root/lms2012/sys/settings/BTser))
echo $var > /home/root/lms2012/sys/settings/UsbInfo.dat
@ -29,6 +37,15 @@ diff -ur orig-ev3/home/root/lms2012/sys/init dev-ev3/home/root/lms2012/sys/init
insmod ${PWD}/mod/d_usbhost.ko
insmod ${PWD}/mod/d_sound.ko `cat /home/root/lms2012/sys/settings/HwId`
insmod ${PWD}/mod/d_bt.ko `cat /home/root/lms2012/sys/settings/HwId`
@@ -29,6 +31,8 @@
chmod 666 /dev/lms_iic
chmod 666 /dev/lms_bt
+echo 4 > /proc/sys/kernel/printk
+
cd ..
ls -R > /dev/null
cd sys
Binary files orig-ev3/home/root/lms2012/sys/mod/d_usbdev.ko and dev-ev3/home/root/lms2012/sys/mod/d_usbdev.ko differ
Only in dev-ev3/home/root/lms2012/sys/mod: nbd.ko
Only in dev-ev3/home/root/lms2012/sys: uf2d

3
brick/scripts/img.js
View File

@ -1,8 +1,9 @@
#!/bin/sh
let fs = require("fs")
// we try to use shorter versions of all parameters for the additional parameters to fit
let bootargs = "mem=${memsize} initrd=${filesysaddr},${filesyssize} root=/dev/ram0 rw rootfstype=cramfs console=${console} ip=${ipaddr} lpj=747520 quiet"
let bootnews = "mem=64M initrd=0xC1180000,10M root=/dev/ram0 rw rootfstype=cramfs console=${console} lpj=747520 quiet musb_hdrc.debug=2"
let bootnews = "mem=64M initrd=0xC1180000,10M root=1:0 rw rootfstype=cramfs console=${console} lpj=747520 musb_hdrc.use_dma=0 log_buf_len=128k quiet"
let piggy = true
function build() {