github/RRG-Proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-08-21 13:53:55 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

Only re-compile version.c as often as necessary

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

4
bootrom/Makefile
View file

@ -2,7 +2,7 @@
# DO NOT use thumb mode in the phase 1 bootloader since that generates a section with glue code
ARMSRC = fromflash.c
THUMBSRC = usb.c version.c bootrom.c
THUMBSRC = usb.c bootrom.c
ASMSRC = ram-reset.s flash-reset.s
# Do not move this inclusion before the definition of {THUMB,ASM,ARM}SRC
@ -10,7 +10,7 @@ include ../common/Makefile.common
all: $(OBJDIR)/bootrom.s19
$(OBJDIR)/bootrom.elf: $(ASMOBJ) $(ARMOBJ) $(THUMBOBJ)
$(OBJDIR)/bootrom.elf: $(VERSIONOBJ) $(ASMOBJ) $(ARMOBJ) $(THUMBOBJ)
$(LD) -g -Tldscript-flash --oformat elf32-littlearm -Map=$(patsubst %.elf,%.map,$@) -o $@ $^
clean:

11
bootrom/ldscript-flash
View file

@ -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)