[coreboot] Flash is not happening on SST49LF004B flashrom

[malatesh]

Hi everybody........We are working on Linux Bios.Initially we read the Bios (Pm49FL004 ) content that is present in the K8Upgrade-VM800Motherboard in to a file (jan14),then we removed the Bios chip and inserted the new flashrom (SST49LF004B) and tried to write the contents on to the new flashrom but flash is not happening properly and Bios is not written to the Bios chip......why it is  not happening please guide us .........I included all the steps clearly ........
	


	
	
	
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[root at turtle9 flashrom]# flashrom 

Calibrating delay loop... OK. 

No LinuxBIOS table found. 

Found chipset "VT8237",
enabling flash write... OK. 

generic_spi_command called, but no SPI
chipset detected 

Pm49FL004 found at physical address
0xfff80000. 

Flash part is Pm49FL004 (512 KB). 

No operations were specified.
Reading the original Bios content in to the file jan14:
[root at turtle9 flashrom]# flashrom -r
jan14 

Calibrating delay loop... OK. 

No LinuxBIOS table found. 

Found chipset "VT8237",
enabling flash write... OK. 

generic_spi_command called, but no SPI
chipset detected 

Pm49FL004 found at physical address
0xfff80000. 

Flash part is Pm49FL004 (512 KB). 

Reading Flash...done 

[root at turtle9 flashrom]# flashrom -v
jan14 

Calibrating delay loop... OK. 

No LinuxBIOS table found. 

Found chipset "VT8237",
enabling flash write... OK. 

generic_spi_command called, but no SPI
chipset detected 

Pm49FL004 found at physical address
0xfff80000. 

Flash part is Pm49FL004 (512 KB). 

Flash image seems to be a legacy BIOS.
Disabling checks. 

Verifying flash... VERIFIED.
***Then we removed the original Bios chip and insearted the new flashrom SST49LF004B and tried to write the content present in the file jan14 ,but finally we got the result as bellow ........          
Writing on to the new Bios chip:
	


	
	
	
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[root at turtle9 flashrom]# flashrom -w
jan14 

Calibrating delay loop... OK. 

No LinuxBIOS table found. 

Found chipset "VT8237",
enabling flash write... OK. 

generic_spi_command called, but no SPI
chipset detected 

SST49LF004A/B found at physical address
0xfff80000. 

Flash part is SST49LF004A/B (512 KB). 

Flash image seems to be a legacy BIOS.
Disabling checks. 

Programming page: 0007 at address:
0x00070000 
With regards Malatesh....
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