Revision as of 18:55, 17 September 2012

TI Davinci Ethernet driver

Run

cd $DEVDIR
make config

and set the Kernel Configuration -> Extra kernel arguments to

davinci_emac.ethaddr=40:61:86:e9:82:12

Modify installer (in installer/u-boot-installer/methods/attached_board), around like 973 to add the ethernet address to the kernel command line.

$BOOTCMD = "setenv bootargs ${bootargs} davinci_emac.ethaddr=${ethaddr} ; nboot $CONFIG_INSTALLER_LOAD_ADDRS 0 \\\${kerneloffset}";

@@ Line 14: / Line 14: @@
 == Using u-boot ethaddr value for fixed Ethernet MAC address ==
-Run
+Modify installer (in installer/u-boot-installer/methods/attached_board), around like 973 to add the ethernet address to the kernel command line.
-  cd $DEVDIR
+  $BOOTCMD = "setenv bootargs ${bootargs} davinci_emac.ethaddr=${ethaddr} ; nboot $CONFIG_INSTALLER_LOAD_ADDRS 0 \\\${kerneloffset}";
- make config
-and set the Kernel Configuration -> Extra kernel arguments to
- davinci_emac.ethaddr="$$\{ethaddr}"
-=== Notes ===
-There are two levels of substitutions, first the one used by the build system, basically line 172 from $DEVDIR/fs/Makefile:
-    $(V) echo -n " $(CONFIG_BSP_EXTRA_BOOT_ARGS) ">>$(CMDLINEFILE)
-The value in bspconfig will be stored as follows:
-    $ cat bsp/mach/bspconfig | grep EXTRA_BOOT
-    CONFIG_BSP_EXTRA_BOOT_ARGS="davinci_emac.ethaddr=\"$$\\{ethaddr}\""
-Running 'make cmdline' at the root of the $DEVDIR, creates the $DEVDIR/imaes/cmdline file
-    $ cat images/cmdline
-    vpfe_capture.cont_bufsize=0  console=ttyS0,115200n8  dm365_imp.oper_mode=0  vpfe_capture.interface=1  mem=68M rootfstype=jffs2 root=/dev/mtdblock2  davinci_emac.ethaddr="$\{ethaddr}"
-There is a backslash there, but it will be understood as desired by the installer and have the correct effect of passing the mac address from u-boot to the kernel.
 [[Category:Whitepaper]]