(I speak here with reference to the binutils patches in the mspgcc4 repository. Not sure which release you're using.)
Chip-specific constants like that are stored in ld/emulparams/msp430all.sh. It appears ones for INFO and BOOT were added for some (but not all) chips, but are never referenced. They probably should be used in ld/scripttempl/ elf32msp430.sc in place of the hard-coded constants. (And maybe elf32msp430_3.sc; not sure why that family merits its own script). Did you discover this by analysis, or can you provide a short shell sequence that generates an elf32 with content in these sections so I can verify before/after behavior on various chips? Below are sections from the ld manual; I don't know specifically why one would want to put data into a memory section but not write it to the chip. ``.bootloader'' Defines the bootloader portion of the ROM (if applicable). Any code in this section will be uploaded to the MPU. ``.infomem'' Defines an information memory section (if applicable). Any code in this section will be uploaded to the MPU. ``.infomemnobits'' This is the same as the `.infomem' section except that any code in this section will not be uploaded to the MPU. Peter On Thu, May 27, 2010 at 5:33 AM, Hans Nieuwenhuis <vz...@xs4all.nl> wrote: > Hi all, > > Just found out that binutils (2.20.1, but also older revs.) installs > incorrect linker files for the msp430x54xx parts. These parts have > their bootloader starting at 0x1000, but as shown in the snippet blow > that's where the linker puts the infomem section. Infomem should be > four blocks of 128 bytes starting at 0x1800. > > bootloader(rx) : ORIGIN = 0x0c00, LENGTH = 1K > infomem(rx) : ORIGIN = 0x1000, LENGTH = 256 > infomemnobits(rx) : ORIGIN = 0x1000, LENGTH = 256 > > What is the purpose of the sections infomem and infomemnobits as they > both point the same start address? Can someone shed a light on this? > > Thanks, > > Hans > > > > ------------------------------------------------------------------------------ > > _______________________________________________ > Mspgcc-users mailing list > Mspgcc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mspgcc-users >