evolution! kernel 2.6.11 has run on the board with u-boot 1.1.4, also, at
early booting time LEDs are disabled due to MMU on and off. so i tried to
turn LEDs on after start_kernel function, wow, blinking! that is before
start_kernel will be done successfully. then i modified registers mapping in
immap_cpm2.h and configure smc1 as serial. console worked normally.
booting info as following
U-Boot 1.1.4 (Apr 2 2009 - 20:05:19)
MPC8272 Reset Status: External Soft, External Hard
MPC8272 Clock Configuration
- Bus-to-Core Mult 4x, VCO Div 2, 60x Bus Freq 25-75 , Core Freq 100-300
- dfbrg 1, corecnf 0x1a, busdf 3, cpmdf 1, plldf 0, pllmf 3
- vco_out 400000000, scc_clk 100000000, brg_clk 25000000
- cpu_clk 400000000, cpm_clk 200000000, bus_clk 100000000
Board: Motorola MPC8272ADS
DRAM: 32 MB
FLASH: 512 kB
In: serial
Out: serial
Err: serial
Net: FCC1 ETHERNET
Hit any key to stop autoboot: 0
Using FCC1 ETHERNET device
TFTP from server 192.168.0.99; our IP address is 192.168.0.100
Filename 'uImage'.
Load address: 0x400000
Loading: #################################################################
#################################################################
#######################
done
Bytes transferred = 781091 (beb23 hex)
=> bootm
## Booting image at 00400000 ...
Image Name: Linux-2.6.11
Image Type: PowerPC Linux Kernel Image (gzip compressed)
Data Size: 781027 Bytes = 762.7 kB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
OK
Linux version 2.6.11 (r...@localhost.localdomain) (gcc version 4.0.0 (DENX
ELDK 4.0 4.0.0)) #49 Tue Apr 7 04:11:56 EDT 2009
Motorola PQ2 ADS PowerPC port
Built 1 zonelists
Kernel command line: mem=32M console=ttyCPM0,9600 root=/dev/mtdblock0 rw
rootfstype=jffs2
PID hash table entries: 256 (order: 8, 4096 bytes)
Warning: real time clock seems stuck!
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 30728k available (1304k kernel code, 276k data, 104k init, 0k
highmem)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
Chengmo : Here will enter rest_init()!
NET: Registered protocol family 16
PCI: Probing PCI hardware
Generic RTC Driver v1.07
Serial: CPM driver $Revision: 0.01 $
ttyCPM0 at MMIO 0xf0011a80 (irq = 4) is a CPM UART
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 blocksize
loop: loaded (max 8 devices)
halt here~
i have tried to build newer kernel and bootloader. but LEDs were not
blinking at start_kernel, i guessed something wrong with dts, i should check
OF doc and dts.
--
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