Dear All,

I am porting U-Boot on a customize board with a IBM PPC405GP embedded processor on it. At first I encountered a problem that the wait_ticks() function called by udelay() can't work, and I replaced the assembly wait_ticks()function by a finite c loop(just count a number down). After that every thing seems ok, until when I boot a linux kernel the kernel hang at "Calibrating delay loop... ".

The time base is configured to use internel CPU clock,

Before the init_timebase() funciton, I did:

configure the cntr0 and cntr1(CPC0_CR0 and CPC0CR1) with 0x007010c0 and 0x00004000; configure the EBC configure the SDRAM controller configure OCM at 0xf8000000, and define CFG_TEMP_STACK_OCM define CONFIG_BOARD_PRE_INIT and configure UIC

init_timebase(use the function in lib_ppc/time.c) define CONFIG_BOARD_POSTCLK_INIT and init 405 on chip I2C interface,

here needs the udelay()function, How can I init the time base correctly?

below is the information when I tftpboot a linux kernel image : ... memsize = 0x02000000 flashstart = 0xFE000000 flashsize = 0x02000000 flashoffset = 0x00000000 sramstart = 0x00000000 sramsize = 0x00000000 bootflags = 0x001E8480 procfreq = 198.512 MHz plb_busfreq = 66.512 MHz pci_busfreq = 33.512 MHz ethaddr = 08:00:3E:26:15:59 IP addr = 192.168.0.199 baudrate = 38400 bps No initrd ## Transferring control to Linux (at address 00000000) ... Linux version 2.4.18_mvl30-walnut (root@RedHat28.accu.com) board info structure size 116 RAM start 0x00000000 size 32MByte FLASH start 0xfe000000 size 32MByte Baudrate 38400 405GP on 198000000Hz PLB BUS on 66000000Hz PCI BUS on 33000000Hz On node 0 totalpages: 8192 zone(0): 8192 pages. zone(1): 0 pages. zone(2): 0 pages. Kernel command line: console=ttyS0,38400 root=/dev/nfs rw Console: colour dummy device 80x25 Calibrating delay loop...

Is this problem related with the macro CONFIG_CLOCKS_IN_MHZ? or just because the time base is not correctly inititalized ?

Thand you,

Zhaodong