[U-Boot] Console bring up on WR linux kernel on mpc8247 board

[smitha.vanga at wipro.com]

Hi Wolfgang,

I am trying to bring up WR linux 2.6.38.2 on a custom target board based
on mpc8247, We are using SCC1 for the serial console. Have initialized
the scc node in the dts as below. Had set the bootargs as setenv
bootargs mem=64M console=ttyCPM,9600n8 root=/dev/ram rw.
My serial console doesn't come up. Can you give any pointers to this
would be of great help. I am stuck here and there is a project release.
Below are the kernel logs I get for the Serial from the __log_buf.
-----------------------------------------------------------
.<6>Serial: CPM driver $Revision: 0.02 $

 .<6>ttyCPM0 at MMIO map 0xc5000a00 mem 0x0 (irq = 40) is a CPM UART

 .<4>RAMDISK driver initialized: 16 RAM disks of 32768K size 1024
blocksize

 .<6>Broadcom B
CM5411: Registered new driver

---------------------------------------------------------- 


   cpm at f0000000 {
                       linux,phandle = <f0000000>;
                       #address-cells = <1>;
                       #size-cells = <1>;
                       #interrupt-cells = <2>;
                       device_type = "cpm";
                       model = "CPM2";
                       ranges = <00000000 00000000 20000>;
                       reg = <0 20000>;
                       command-proc = <119c0>;
                       brg-frequency = <FE70B8>;
                       cpm_clk = <7F385C0>;

                       scc at 11a00 {
                               device_type = "serial";
                               compatible = "cpm_uart";
                               model = "SCC";
                               device-id = <1>;
                               reg = <11a00 20 8000 100>;
                               current-speed = <2580>;
                               interrupts = <28 2>;
                               interrupt-parent = <10c00>;
                               clock-setup = <0 00ffffff>;
                               rx-clock = <1>;
                               tx-clock = <1>;
                       };

                      

               };

---------------------------------------------------------------

Kernel configurations:
# CONFIG_PPC64 is not set
CONFIG_PPC32=y
CONFIG_PPC_MERGE=y
CONFIG_MMU=y
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_IRQ_PER_CPU=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_ARCH_HAS_ILOG2_U32=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_PPC=y
CONFIG_EARLY_PRINTK=y
CONFIG_GENERIC_NVRAM=y
CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_PPC_OF=y
# CONFIG_PPC_UDBG_16550 is not set
# CONFIG_GENERIC_TBSYNC is not set
CONFIG_AUDIT_ARCH=y
CONFIG_GENERIC_BUG=y
CONFIG_DEFAULT_UIMAGE=y

#
# Processor support
#
# CONFIG_CLASSIC32 is not set
# CONFIG_PPC_512x is not set
CONFIG_PPC_82xx=y
# CONFIG_PPC_83xx is not set
# CONFIG_PPC_85xx is not set
# CONFIG_PPC_86xx is not set
# CONFIG_PPC_8xx is not set
# CONFIG_40x is not set
# CONFIG_44x is not set
# CONFIG_E200 is not set
CONFIG_6xx=y
CONFIG_PPC_FPU=y
# CONFIG_PPC_DCR_NATIVE is not set
# CONFIG_PPC_DCR_MMIO is not set
CONFIG_PPC_STD_MMU=y
CONFIG_PPC_STD_MMU_32=y
# CONFIG_SMP is not set
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"


# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
# CONFIG_IOSCHED_AS is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
# CONFIG_DEFAULT_AS is not set
# CONFIG_DEFAULT_DEADLINE is not set
# CONFIG_DEFAULT_CFQ is not set
CONFIG_DEFAULT_NOOP=y
CONFIG_DEFAULT_IOSCHED="noop"
CONFIG_PQ2ADS=y
CONFIG_8260=y
CONFIG_8272=y
CONFIG_CPM2=y
# CONFIG_WANT_EARLY_SERIAL is not set
CONFIG_EMBEDDEDBOOT=y

#
# Platform support
#
CONFIG_MPC82xx_ADS=y
# CONFIG_MPIC is not set

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_UARTLITE is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
CONFIG_SERIAL_CPM=y
CONFIG_SERIAL_CPM_CONSOLE=y
CONFIG_SERIAL_CPM_SCC1=y
# CONFIG_SERIAL_CPM_SCC2 is not set
# CONFIG_SERIAL_CPM_SCC3 is not set
# CONFIG_SERIAL_CPM_SCC4 is not set
# CONFIG_SERIAL_CPM_SMC1 is not set
# CONFIG_SERIAL_CPM_SMC2 is not set
CONFIG_UNIX98_PTYS=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_IPMI_HANDLER is not set

Thank in Advance
Regards,
Smitha

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