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Reclaim more than 19K of ARM flash memory.

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- added compiler options -fdata-sections and -ffunction-sections (thanks to iceman for the hint)
- removed float operations from common/lfdemod.c to avoid adding float libraries to the ARM os image
- moved the fpga images to the data section to avoid reserving unused space for a separate section
This commit is contained in:
pwpiwi 2015-03-31 08:01:23 +02:00
commit e335ca2846
5 changed files with 28 additions and 39 deletions
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6
common/ldscript.common
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@ -1,6 +1,7 @@
/*
-----------------------------------------------------------------------------
This code is licensed to you under the terms of the GNU GPL, version 2 or,
This code is licensed to you under the ter
ms of the GNU GPL, version 2 or,
at your option, any later version. See the LICENSE.txt file for the text of
the license.
-----------------------------------------------------------------------------
@ -13,8 +14,7 @@ MEMORY
{
bootphase1 : ORIGIN = 0x00100000, LENGTH = 0x200 /* Phase 1 bootloader: Copies real bootloader to RAM */
bootphase2 : ORIGIN = 0x00100200, LENGTH = 0x2000 - 0x200 /* Main bootloader code, stored in Flash, executed from RAM */
fpgaimage : ORIGIN = 0x00102000, LENGTH = 96k - 0x2000 /* Place where the FPGA image will end up */
osimage : ORIGIN = 0x00118000, LENGTH = 256K - 96k /* Place where the main OS will end up */
osimage : ORIGIN = 0x00102000, LENGTH = 256K - 0x2000 /* Place where the main OS will end up */
ram : ORIGIN = 0x00200000, LENGTH = 64K - 0x20 /* RAM, minus small common area */
commonarea : ORIGIN = 0x00200000 + 64K - 0x20, LENGTH = 0x20 /* Communication between bootloader and main OS */
}