Hello,
Thank you for the help.
On formatting the SD Card and re-running the above two "dd" commands, I could boot from the SDCard with the following switch settings:
SW1: 00110011
All other switches are default settings as given in the SDK manual

I have attached the U-boot log for reference.
May I know the steps to re-program the NOR flash.
1. What are the different files required to re-program the NOR flash.
2. Commands to program the NOR flash from the U-boot console
3. How to configure Ethernet ( in case tftp transfer is required, since the U-boot file shows the following errors )
Net:
MMC read: dev # 0, block # 1680, count 128 ...
Fman1: Uploading microcode version 106.2.18
Could not get PHY for P4080DS_MDIO12: addr 28
Failed to connect
Could not get PHY for P4080DS_MDIO12: addr 30
Failed to connect
Could not get PHY for P4080DS_MDIO12: addr 31
Failed to connect
MMC read: dev # 0, block # 1680, count 128 ...
Fman2: Uploading microcode version 106.2.18
Could not get PHY for P4080DS_MDIO4: addr 28
Failed to connect
Could not get PHY for P4080DS_MDIO4: addr 29
Failed to connect
Could not get PHY for P4080DS_MDIO4: addr 30
Failed to connect
Could not get PHY for P4080DS_MDIO4: addr 31
Failed to connect
FM1@DTSEC1 [PRIME]
Error: FM1@DTSEC1 address not set.
, FM1@DTSEC2
Error: FM1@DTSEC2 address not set.
, FM1@DTSEC3
Error: FM1@DTSEC3 address not set.
, FM1@DTSEC4
Error: FM1@DTSEC4 address not set.
, FM2@DTSEC1
Error: FM2@DTSEC1 address not set.
, FM2@DTSEC2
Error: FM2@DTSEC2 address not set.
, FM2@DTSEC3
Error: FM2@DTSEC3 address not set.
, FM2@DTSEC4
Error: FM2@DTSEC4 address not set.
Thank you in advance.