Greetings.
I looked through the archives to see if my problem had been seen, and it appears it has not.
The problem I am having is the serial_init() is hanging waiting for the CPM to finish after having "sent" the init Tx & Rx command. The very strange thing is when the code reads the CPM address (0xFF7919C0) it sees the value of 0x00810000 but using VisionCLICK to probe the address, I get the value of 0x00800000; indicating the command had completed.
If I turn off the dcache (clearing bit 31 in L1CSR0), it does finish this loop, but uboot appears to have problems later in the initialization sequence. This is not entirely unexpected, but I haven't investigated the later failures.
I am working with the 1.2.0 code base I built from the ISO images on SourceForge. I am building the software on a Fedora Core 6 system (all the latest updates) using the ELDK crosstools. Oh yes, I have read the README.sbc8560 document.
The only code I have changed is in sbc8560.h to match the SBC8560. Here are the actual differences:
$ diff -b ./include/configs/sbc8560.h ./include/configs/sbc8560.h.~1~ 49c49 < #undef CONFIG_TSEC_ENET /* tsec ethernet support */ ---
#define CONFIG_TSEC_ENET /* tsec ethernet support */
51c51 < #define CONFIG_ETHER_ON_FCC /* cpm FCC ethernet support */ ---
#undef CONFIG_ETHER_ON_FCC /* cpm FCC ethernet support */
177c177 < #define CONFIG_CONS_ON_SCC /* define if console on SCC */ ---
#undef CONFIG_CONS_ON_SCC /* define if console on SCC
*/ 182,185c182,185 < #undef CFG_NS16550 < #undef CFG_NS16550_SERIAL < #undef CFG_NS16550_REG_SIZE < #undef CFG_NS16550_CLK ---
#define CFG_NS16550 #define CFG_NS16550_SERIAL #define CFG_NS16550_REG_SIZE 1 #define CFG_NS16550_CLK 1843200 /* get_bus_freq(0) */
191,192c191,192 < #undef CFG_NS16550_COM1 < #undef CFG_NS16550_COM2 ---
#define CFG_NS16550_COM1 ((CFG_BR5_PRELIM & 0xff000000)+0x00700000) #define CFG_NS16550_COM2 ((CFG_BR5_PRELIM & 0xff000000)+0x00800000)
315c315 < #define CONFIG_BOOTARGS "root=/dev/nfs rw nfsroot=10.10.12.202:/tftpboot ip=10.10.12.100:10.10.12.202::255.255.255.0:sbc8560:eth0: off console=ttyS0,9600" ---
#define CONFIG_BOOTARGS "root=/dev/nfs rw nfsroot=192.168.0.251:/tftpboot
ip=192.168.0.105:192.168.0.251::255.255.255.0:sbc8560:et h0:off console=ttyS0,9600" 393c393 < # define CONFIG_ETHADDR 00:a0:1e:08:14:74 ---
# define CONFIG_ETHADDR 00:01:af:07:9b:8a
395c395 < # define CONFIG_ETH1ADDR 00:a0:1e:08:14:74 ---
# define CONFIG_ETH1ADDR 00:01:af:07:9b:8b
397c397 < # define CONFIG_ETH2ADDR 00:a0:1e:08:14:74 ---
# define CONFIG_ETH2ADDR 00:01:af:07:9b:8c
400,402c400,402 < #define CONFIG_SERVERIP 10.10.12.202 < #define CONFIG_IPADDR 10.10.12.100 < #define CONFIG_GATEWAYIP 10.10.12.2 ---
#define CONFIG_SERVERIP 192.168.0.131 #define CONFIG_IPADDR 192.168.0.105 #define CONFIG_GATEWAYIP 0.0.0.0
406c406 < #define CONFIG_BOOTFILE zImage ---
#define CONFIG_BOOTFILE pImage
$
The changes fall into three main areas:
1) Using the FCC Ethernet interface. 2) Using the SCC serial port rather than a 16550 UART. 3) Setting the various IP parameters.
Thanks in advance for any help and/or suggestions.
- Mark
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