This command defines a memory region.
Syntaxmemorystart_address { end_address | +size} [attributes]...
Where:
start_addressSpecifies the start address for the region.
end_addressSpecifies the inclusive end address for the region. You can use
0x0as a shortcut to represent the end of the address space.sizeSpecifies the size of the region.
attributesSpecifies additional attributes:
access_modeSpecifies the access mode for the region:
nano access
roread-only
wowrite-only
rwread/write. This is the default.
widthSpecifies the access width:
88-bit
1616-bit
3232-bit
6464-bit.
It is only necessary to specify a specific access width where the memory region is sensitive to this, for example, when accessing some peripherals.
If no
widthbp| nobpControls whether or not software breakpoints can be set in the region.
bpis the default.hbp| nohbpControls whether or not hardware breakpoints can be set in the region.
hbpis the default.cache| nocacheControls whether the debugger can cache data read from the memory region. Enabling the caching of memory can improve debugger performance. Memory regions that can be modified by external sources should not be cached by the debugger. For example volatile peripherals.
nocacheis the default.verify| noverifyControls whether or not a write operation must verify the value written by reading the value back and comparing it to the value written. The
verifyoption also requires therwattribute to be specified so that the verify operation to be performed. ARM recommends that you mark areas of memory containing peripherals asnoverify, because some peripheral registers are volatile such that reading their value changes their contents as a side-effect.verifyis the default.
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