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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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12
armsrc/appmain.c
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@ -238,17 +238,19 @@ void ReadMem(int addr)
/* osimage version information is linked in */
extern struct version_information version_information;
/* bootrom version information is pointed to from _bootphase1_version_pointer */
extern char _bootphase1_version_pointer, _flash_start, _flash_end;
void SendVersion(void)
{
char temp[48]; /* Limited data payload in USB packets */
DbpString("Prox/RFID mark3 RFID instrument");
/* Try to find the bootrom version information. For the time being, expect
* to find a pointer at address 0x1001fc, perform slight sanity checks on
* the pointer, then use it.
/* Try to find the bootrom version information. Expect to find a pointer at
* symbol _bootphase1_version_pointer, perform slight sanity checks on the
* pointer, then use it.
*/
void *bootrom_version = *(void**)0x1001fc;
if( bootrom_version < (void*)0x100000 || bootrom_version > (void*)0x101000 ) {
void *bootrom_version = *(void**)&_bootphase1_version_pointer;
if( bootrom_version < (void*)&_flash_start || bootrom_version >= (void*)&_flash_end ) {
DbpString("bootrom version information appears invalid");
} else {
FormatVersionInformation(temp, sizeof(temp), "bootrom: ", bootrom_version);