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Only re-compile version.c as often as necessary

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Make bootrom version information pointer a proper symbol (with hacky ld strangeness workaround)
This commit is contained in:
henryk@ploetzli.ch 2009-08-29 06:14:28 +00:00
commit 4271e82d56
7 changed files with 33 additions and 21 deletions
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11
bootrom/ldscript-flash
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@ -5,7 +5,7 @@ SECTIONS
{
. = 0;
bootphase1 : {
.bootphase1 : {
*(.startup)
*(.bootphase1)
@ -15,14 +15,17 @@ SECTIONS
of the version information at the end of the section.
-- Henryk Plötz <henryk@ploetzli.ch> 2009-08-28 */
_version_information_start = .;
_version_information_start = ABSOLUTE(.);
*(.version_information);
. = LENGTH(bootphase1) - 0x4; /* Skip ahead to the end */
/* Why doesn't this work even though _bootphase1_version_pointer = 0x1001fc?
. = _bootphase1_version_pointer - ORIGIN(bootphase1); */
/* This works, apparently it fools the linker into accepting an absolute address */
. = _bootphase1_version_pointer - ORIGIN(bootphase1) + ORIGIN(bootphase1);
LONG(_version_information_start)
} >bootphase1
bootphase2 : {
.bootphase2 : {
__bootphase2_start__ = .;
*(.startphase2)
*(.text)