Hi Stefan,
Hello, We have been looking at protecting U-Boot from (malicious) TFTP overwrites. We want to do this after our ARMv7 U-Boot has relocated.
The memory map looks like this (I hope):
--------------------------- Top of DRAM | U-Boot (Protected) | -------------------------- U_Boot_start | Heap (Protected) | -------------------------- Start_Heap = U_Boot_start - Heap_Size | Stack (Protected) | -------------------------- Start_Stack = Start_Heap - Stack_Size | Buffers (Protected) | -------------------------- ??? | Free DRAM (Not Protected) --------------------------- Start of DRAM
I seem to get lost in the code trying to find possible buffers, can you please give a hint how I can find the address "???"
By default the tftp writes its data to the address pointed by the "loadaddr" env variable.
printenv loadaddr
Best Regards, Stefan
U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
Best regards,
Lukasz Majewski
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