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Date of registration: Sep 3rd 2008

Posts: 3


Wednesday, September 3rd 2008, 6:49am

j-flash program slowly

im a new user of J-flash some body can help me that how i can find the RAM address for fast flashing in case of MSM 5100,6100,or MSM Chips in CDMA phones,five me some guidness so i can do flash in fast mode.



Date of registration: Sep 8th 2008

Posts: 1


Monday, September 8th 2008, 8:15pm

I am also having a similiar issue when trying to write to qualcomm chipsets. Is it possible to get some guidance on this...



Date of registration: Dec 3rd 2007

Posts: 16


Monday, September 8th 2008, 9:54pm

Am I correct to assume you are trying to program the flash of cell phones ?
If you are, please make sure what you are trying to do is legal.

On the technical side, things are always similar:

You should understand the target system:
Take a look at the schematic and the documentation of your CPU / SOC.
Make sure the CPU runs at a decent speed (at least a few MHz, not just 32kHz)
If necessary, enable & select a PLL as clock source.
Locate RAM (Ideally on-chip RAM, even if it is just a 4KB) in the chip documentation.
If necessary, use external RAM (usually SDRAM). You may have to setup
the external bus interface.
You may also have to setup the external bus interface to program the flash
since in a lot of cases, it allows per default just reading of flash memory.
Last but not least, you should make sure the JTAG speed is as
high as possible (on ARM-S cores with RTCK, Adaptive is usually a good
choice; if not, 8Mhz or 12MHz is ideal. However, this should be the last step)




Thursday, October 16th 2008, 10:24am

jink can support msm cpu