proxmark3/bootrom/ldscript-flash
henryk@ploetzli.ch 8fcbf652da New bootrom
+ Add common area at end of RAM to communicate between main os and bootrom
+ Lower stack end to make room for common area
+ Implement CMD_DEVICE_INFO in both OS and bootrom to give information about the current state and supported features
+ Allow hands-free firmware update: When CMD_START_FLASH is received over USB in OS mode, the device will reset and enter the bootrom
  Pressing the button in hands-free update mode takes precedence: releasing the button will immediately abort firmware update and 
  perform a reset. Do not press the button.
+ Require each flash sequence to be preceded by a CMD_START_FLASH to set up the boundaries for the following flash sequence
  Not compatible with linux flasher before SVN revision 200
  Currently no compatible flasher for Windows. WINDOWS USERS: DO NOT UPDATE YOUR BOOTROM YET
+ Protect bootrom flash area unless magic unlock sequence is given in CMD_START_FLASH
2009-09-01 14:44:38 +00:00

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1.4 KiB
Text

INCLUDE ../common/ldscript.common
ENTRY(flashstart)
SECTIONS
{
. = 0;
.bootphase1 : {
*(.startup)
*(.bootphase1)
/* It seems to be impossible to flush align a section at the
end of a memory segment. Instead, we'll put the version_information
wherever the linker wants it, and then put a pointer to the start
of the version information at the end of the section.
-- Henryk Plötz <henryk@ploetzli.ch> 2009-08-28 */
_version_information_start = ABSOLUTE(.);
*(.version_information);
/* 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_src_start__ = ORIGIN(bootphase2);
.bootphase2 : {
__bootphase2_start__ = .;
*(.startphase2)
*(.text)
*(.glue_7)
*(.glue_7t)
*(.rodata)
*(.data)
. = ALIGN( 32 / 8 );
__bootphase2_end__ = .;
} >ram AT>bootphase2
.bss : {
__bss_start__ = .;
*(.bss)
} >ram
. = ALIGN( 32 / 8 );
__bss_end__ = .;
.commonarea (NOLOAD) : {
*(.commonarea)
} >commonarea
}