| 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 |