Hi Peter,
Here is a patch to fix the incorrect boot and info address and sizes.
--- elf32msp430.sc 2010-05-27 15:53:29.000000000 +0200
+++ /home/hans/msp430/elf32msp430.sc 2010-05-27
15:48:37.000000000 +0200 @@ -41,6 +41,22 @@
FARTEXT_SECTION_MSP430=""
fi
+if [ -z $BOOT_START ] ; then
+ BOOT_START=0x0c00
+fi
+
+if [ -z $BOOT_SIZE ] ; then
+ BOOT_SIZE=1K
+fi
+
+if [ -z $INFO_START ] ; then
+ INFO_START=0x1000
+fi
+
+if [ -z $INFO_SIZE ] ; then
+ INFO_SIZE=256
+fi
+
cat <<EOF
OUTPUT_FORMAT("${OUTPUT_FORMAT}","${OUTPUT_FORMAT}","${OUTPUT_FORMAT}")
OUTPUT_ARCH(${ARCH})
@@ -50,9 +66,9 @@
${TEXT_REGION_MSP430}
data (rwx) : ORIGIN = $RAM_START, LENGTH = $RAM_SIZE
vectors (rw) : ORIGIN = $VECTORS_START, LENGTH =
$VECTORS_SIZE
- bootloader(rx) : ORIGIN = 0x0c00, LENGTH = 1K
- infomem(rx) : ORIGIN = 0x1000, LENGTH = 256
- infomemnobits(rx) : ORIGIN = 0x1000, LENGTH = 256
+ bootloader(rx) : ORIGIN = $BOOT_START, LENGTH = $BOOT_SIZE
+ infomem(rx) : ORIGIN = $INFO_START, LENGTH = $INFO_SIZE
+ infomemnobits(rx) : ORIGIN = $INFO_START, LENGTH = $INFO_SIZE
${HEAP_MEMORY_MSP430}
}
I tested it with msp430f5438 and msp430f1612 and both seem to have
their correct definitions now.
Regards,
Hans
On Thu, 27 May 2010 06:58:03 -0500
Peter Bigot <[email protected]> wrote:
> (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 <[email protected]> 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
> >
> >
> >
> > ------------------------------------------------------------------------------
> >
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> > [email protected]
> > https://lists.sourceforge.net/lists/listinfo/mspgcc-users
> >
