[arm-gnu] linker script - LMA for rom section

[Martin Velek]

Hello,

I have a question about settings for a linker script for NXP lpc1857.
The micro has got two flash banks, A and B, in a non-continuous memory
address space,
A starts at 0x1A000000, size 512KB
B starts at 0x1B000000, size 512KB

There is implemented a shadow memory area starting at 0x00000000 which
can be, via a special register, mapped to e.g. beginning of the flash
bank A. Thus it is possible to write a code with starting at addr.
0x000000, linker script with rom(rx) : ORIGIN = 0x00000000, LENGTH =
512K, rom1 (rx) : ORIGIN = 0x01000000, LENGTH = 512K.

My idea is to setup LMA for code (.text section, .rodata and
.data(init values) to 0x1A000000 and VMA to 0x000000. In my linker
script is
......
rom (rx) : ORIGIN = 0x0000, LENGTH = 512K
.....
.text : AT(0x1A000000){ ....  } >rom
.rodata : ALIGN (4) { } >rom
.data : ALIGN (8) { } >ram AT>rom
.bss : ALIGN (8)  {} >ram AT>rom

Hower it only  works for .text, .rodata.
Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 .text         000002b0  00000000  1a000000  00010000  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  1 .eh_frame     00000004  000002b0  1a0002b0  000102b0  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  2 .rodata       00000074  000002b4  1a0002b4  000102b4  2**2
                  CONTENTS, ALLOC, LOAD, CODE
  3 .data         00000008  10000000  00000328  00008000  2**3
                  CONTENTS, ALLOC, LOAD, DATA
  4 .bss          00000020  10000008  00000330  00008008  2**3
                  ALLOC

The problem is with .data LMA = 00000328 and .bss  LMA = 00000330 . I
am out of ideas how to edit the linker script :(.

Thank you for your help.

Best,
Martin

P.S.
I would like to stick to rom (rx) : ORIGIN = 0x00000000 instead of rom
(rx) : ORIGIN = 0x1A000000 for many of reasons, e.g. code portability,
code size, etc.