Hi, 2008/8/20 thaoth <[EMAIL PROTECTED]>: > > Hi Nobuhiro Iwamatsu, > > 1. Clock frequency of board. > > #define CONFIG_SYS_CLK_FREQ 33333333 > #define TMU_CLK_DIVIDER 4 /* 4 (default), 16, 64, 256 or 1024 */ > #define CFG_HZ (CONFIG_SYS_CLK_FREQ / TMU_CLK_DIVIDER) > > I don't understand how to set CONFIG_SYS_CLK_FREQ value. From T-Engine > support, they said clock frequency of board is 144MHz.
Please set outside clock to CONFIG_SYS_CLK_FREQ. > > 2. Cross compiler tool chain : GCC vs T-Engine toolchain > There are two tool chains > - > http://www.superh-linux.org/archive/bsp/sh7721_se/toolchain_sh3_gcc4.2.tar.gz > support elf32-sh-linux target. > - Tool chain from T-Engine forum support elf32-sh-tkernel > Using both cross compilers, we could turn on LED on debug board by setting > correct value LED_A and LED_B value. > > 3. ICE or JTAG debugger and LED debugging. > I don't have these debug tools, and so hard for debugging. T-Engine/SH7727 > DevKit has debug board with 8 LEDs. I could turn on/off these LEDs by > setting correct value to 0xA1600000 memory. But C function turn on/off LED > cannot work. For example > > int cpu_init(void) > { > // Turn off LED 1 to notify cpu_init is called. > outw(0x00 & 0xFF, 0xa1600000); > return 0; > } > > I don't know why it isn't called? I think that cpu_init is not carried out. I think that u-boot stopped on lowlevel_init function. > > Would you please give me your ideas? Thank you a lot. I will get T-Engine board ...... Please wait. Best regards, Nobuhiro _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
