Using the section attribute

Hi DOLPHIN,

Forget what I said about a custom linker file ... you don't need it (it's been a while since I played

with the hal) ... the generated linker script conveniently provides the necessary symbols.

The script contains an output section for each memory "partition" you define, along with the symbols:

_alt_partition_xxx_start

_alt_partition_xxx_end

_alt_partition_xxx_load_addr

where xxx is the partition name. For example, with an on-chip memory named "ocm" you would have:

_alt_partition_ocm_start

_alt_partition_ocm_end

_alt_partition_ocm_load_addr

For details, you can look through your system_description/generated.x file.

Anyway, to move your code from its load address (LMA) to its virtual adderss (VMA), you can use

these symbols with something like:

extern unsigned _alt_partition_ocm_start;
extern unsigned _alt_partition_ocm_end;
extern unsigned _alt_partition_ocm_load_addr;
...
unsigned *dst = _alt_partition_ocm_start;
unsigned *end = _alt_partition_ocm_end;
unsigned *src = _alt_partition_ocm_load_addr;
while (dst < end) *dst++ = *src++;

Regards,

--Scott