| This is the readme for the Das U-Boot standalone program smc91111 |
| |
| The main purpose of this is to manage MAC addresses on platforms |
| which include the SMC91111 integrated 10/100 MAC Phy, with attached |
| EEPROMs. |
| |
| |
| Contents: |
| ------------------------ |
| 1. Ensuring U-boot's MAC address can be set in hardware |
| 2. Running the smc91111_eeprom program |
| 3. Setting MAC addresses |
| 4. Other things you can do with this |
| 5. Things to be done. |
| |
| |
| 1. Ensuring U-boot's MAC address can be set in hardware |
| -------------------------------------------------------------------------- |
| |
| On the Internet - MAC addresses are very important. Short for Media |
| Access Control address, a hardware address that uniquely identifies |
| each node of a network. When things are not unique - bad things |
| can happen. This is why U-Boot makes it difficult to change MAC |
| addresses. |
| |
| To find out who has a MAC address, or to purchase MAC addresses, goto |
| the IEEE, at: |
| http://standards.ieee.org/regauth/oui/index.shtml |
| |
| To change your MAC address, there can not be a MAC address predefined in |
| U-Boot. To ensure that this does not occur, check your |
| include/configs/<board_name>.h file, and check to see that the following |
| settings are _not_ or commented out there. |
| |
| #define HARDCODE_MAC 1 |
| #define CONFIG_ETHADDR 02:80:ad:20:31:b8 |
| |
| The purpose of HARDCODE_MAC is to hardcode the MAC address in software, |
| (not what we want), or to preset it to 02:80:ad:20:31:b8 (not what we |
| want either). |
| |
| You can check this in a running U-Boot, by doing a power cycle, then |
| before U-Boot tries to do any networking, running the 'printenv' command |
| |
| BOOT> printenv |
| |
| ethaddr=02:80:ad:20:31:b8 |
| |
| If you see the 'ethaddr' variable show up, like the above, you need to |
| recompile U-Boot, with the above settings commented out of the |
| include/configs/<board_name>.h file. |
| |
| 2. Running the smc91111_eeprom program |
| --------------------------------------------------------------------- |
| |
| After Uboot is compiled, there should be three files of interest: |
| -rwxr-xr-x 1 8806 2004-10-11 14:00 smc91111_eeprom <- ELF |
| -rwxr-xr-x 1 3440 2004-10-11 14:00 smc91111_eeprom.bin <- BIN |
| -rwxr-xr-x 1 9524 2004-10-11 14:00 smc91111_eeprom.srec <- SREC |
| |
| if there is not, check the examples/Makefile, and ensure there is something |
| like for your architecture: |
| |
| ifeq ($(ARCH),blackfin) |
| SREC += smc91111_eeprom.srec |
| BIN += smc91111_eeprom.bin smc91111_eeprom |
| endif |
| |
| To load the files: there are two methods: a) serial or b) network. Since |
| it is not a good idea to start doing things on the network before the |
| MAC address is set, this example will do things over serial. |
| |
| a) Loading the elf file via the serial port |
| -------------------------------------------- |
| Loading the elf is very easy - just ensure that the location |
| you specify things to load as is not the load address specified |
| in the Makefile. |
| |
| BOOT> loadb 0x1000000 |
| |
| ## Ready for binary (kermit) download to 0x01000000 at 57600 bps... |
| |
| (type CNTL-\ then C) |
| (Back at local machine) |
| ---------------------------------------------------- |
| Kermit>send ~/u-boot_1.1.1/examples/smc91111_eeprom |
| Kermit>connect |
| |
| Connecting to /dev/ttyS0, speed 57600 |
| Escape character: Ctrl-\ (ASCII 28, FS): enabled |
| Type the escape character followed by C to get back, |
| or followed by ? to see other options. |
| ---------------------------------------------------- |
| ## Total Size = 0x00002266 = 8806 Bytes |
| ## Start Addr = 0x01000000 |
| |
| BOOT> bootelf 0x1000000 |
| |
| Loading .text @ 0x00001000 (3440 bytes) |
| ## Starting application at 0x000010d8 ... |
| |
| SMC91111> |
| |
| b) Loading the binary file via the serial port |
| ----------------------------------------------- |
| For many toolchains, the entry point is not the load point. |
| The Load point is a hard coded address from the |
| examples/Makefile. The entry point can be found by doing something |
| like: |
| |
| u-boot_1.1.1/examples> bfin-elf-objdump -d smc91111_eeprom |less |
| |
| smc91111_eeprom: file format elf32-bfin |
| |
| Disassembly of section .text: |
| |
| 00001000 <smc91111_eeprom-0xd8>: |
| 1000: |
| 000010d8 <smc91111_eeprom>: |
| |
| You can see that the entry point (or the address that should be |
| jumped to is 0x10d8). This is also the same as the entry point |
| of the elf file. |
| |
| Now we load it to the actual load location: |
| |
| BOOT> loadb 0x1000 |
| |
| ## Ready for binary (kermit) download to 0x00001000 at 57600 bps... |
| |
| (Back at pinky.dsl-only.net) |
| ---------------------------------------------------- |
| Kermit>send /tftpboot/eeprom.bin |
| Kermit>connect |
| |
| Connecting to /dev/ttyS0, speed 57600 |
| Escape character: Ctrl-\ (ASCII 28, FS): enabled |
| Type the escape character followed by C to get back, |
| or followed by ? to see other options. |
| ---------------------------------------------------- |
| ## Total Size = 0x00000d70 = 3440 Bytes |
| ## Start Addr = 0x00001000 |
| |
| BOOT> go 0x10D8 |
| |
| ## Starting application at 0x000010D8 ... |
| |
| SMC91111> |
| |
| 3. Setting MAC addresses |
| -------------------------------------------------------------------------- |
| |
| The MAC address can be stored in four locations: |
| |
| -Boot environmental variable in Flash <- can not change, without |
| re-flashing U-boot. |
| U-Boot environental variable <- can not change, without |
| resetting board/U-Boot |
| LAN91C111 Registers <- volitle |
| LAN91C111 EEPROM <- Non Volitle |
| |
| If you have not activated the network, and do not have a hardcoded |
| or pre-assigned MAC address in U-boot, the environmental variables |
| should be blank, and allow you to set things one time. |
| |
| To set the EEPROM MAC address to 12:34:56:78:9A:BC |
| |
| SMC91111> W E 20 3412 |
| |
| Writing EEPROM register 20 with 3412 |
| SMC91111> W E 21 7856 |
| |
| Writing EEPROM register 21 with 7856 |
| SMC91111> W E 22 BC9A |
| |
| Writing EEPROM register 22 with bc9a |
| EEPROM contents copied to MAC |
| SMC91111> P |
| |
| Current MAC Address in SMSC91111 12:34:56:78:9a:bc |
| Current MAC Address in EEPROM 12:34:56:78:9a:bc |
| |
| (CNTRL-C to exit) |
| SMC91111> ## Application terminated, rc = 0x0 |
| |
| BOOT> reset |
| U-Boot 1.1.1 (gcc version: 3.3.3) |
| Release Version Beta released on Oct 10 2004 - 00:34:35 |
| Blackfin support by LG Soft India |
| For further information please check this link http://www.blackfin.uclinux.org |
| BOOT> ping 192.168.0.4 |
| |
| Using MAC Address 12:34:56:78:9A:BC |
| host 192.168.0.4 is alive |
| |
| |
| 4. Other things that you can do |
| -------------------------------------------------------------------------- |
| After the stand alone application is running, there are a few options: |
| - P : Print the MAC |
| - D : Dump the LAN91C111 EEPROM contents |
| - M : Dump the LAN91C111 MAC contents |
| - C : Copies the MAC address from the EEPROM to the LAN91C111 |
| - W : Write a register in the EEPROM or in the MAC |
| |
| SMC91111> P |
| |
| Current MAC Address in SMSC91111 12:34:56:78:9a:bc |
| Current MAC Address in EEPROM 12:34:56:78:9a:bc |
| |
| SMC91111> D |
| |
| IOS2-0 000 001 002 003 004 005 006 007 |
| CONFIG 00:ffff 04:ffff 08:ffff 0c:ffff 10:ffff 14:ffff 18:ffff 1c:ffff |
| BASE 01:ffff 05:ffff 09:ffff 0d:ffff 11:ffff 15:ffff 19:ffff 1d:ffff |
| 02:ffff 06:ffff 0a:ffff 0e:0020 12:ffff 16:ffff 1a:ffff 1e:ffff |
| 03:ffff 07:ffff 0b:ffff 0f:ffff 13:ffff 17:ffff 1b:ffff 1f:ffff |
| |
| 20:3412 21:7856 22:bc9a 23:ffff 24:ffff 25:ffff 26:ffff 27:ffff |
| 28:ffff 29:ffff 2a:ffff 2b:ffff 2c:ffff 2d:ffff 2e:ffff 2f:ffff |
| 30:ffff 31:ffff 32:ffff 33:ffff 34:ffff 35:ffff 36:ffff 37:ffff |
| 38:ffff 39:ffff 3a:ffff 3b:ffff 3c:ffff 3d:ffff 3e:ffff 3f:ffff |
| |
| SMC91111> M |
| |
| Bank0 Bank1 Bank2 Bank3 |
| 00 0000 a0b1 3332 0000 |
| 02 0000 1801 8000 0000 |
| 04 0000 3412 8080 0000 |
| 06 0000 7856 003f 0000 |
| 08 0404 bc9a 02df 3332 |
| 0a 0000 ffff 02df 3391 |
| 0c 0000 1214 0004 001f |
| 0e 3300 3301 3302 3303 |
| |
| SMC91111> C |
| |
| EEPROM contents copied to MAC |
| |
| SMC91111> W E 2A ABCD |
| |
| Writing EEPROM register 2a with abcd |
| |
| SMC91111> W M 14 FF00 |
| |
| Writing MAC register bank 1, reg 04 with ff00 |