trezor-firmware/legacy/memory.ld

/* STM32F205RG - 1024K Flash, 128K RAM */

MEMORY
{
	rom (rx) : ORIGIN = 0x08000000, LENGTH = 1024K
	ram (rwx) : ORIGIN = 0x20000000, LENGTH = 128K
}

SECTIONS
{
	.confidential (NOLOAD) : {
		*(confidential)
		ASSERT ((SIZEOF(.confidential) <= 32K), "Error: Confidential section too big!");
	} >ram
}

INCLUDE cortex-m-generic.ld

_ram_start = ORIGIN(ram);
_ram_end = ORIGIN(ram) + LENGTH(ram);
_stay_in_bootloader_flag_addr = ABSOLUTE(0x20010000);
_stack = _ram_end - 8;
__stack_chk_guard = _ram_end - 8;
system_millis = _ram_end - 4;

_data_size = SIZEOF(.data);
firmware: use full 1M flash 2018-06-27 16:17:44 +00:00			`/* STM32F205RG - 1024K Flash, 128K RAM */`
import v1.0.0 2014-04-29 12:26:51 +00:00
			`MEMORY`
			`{`
firmware: use full 1M flash 2018-06-27 16:17:44 +00:00			`rom (rx) : ORIGIN = 0x08000000, LENGTH = 1024K`
import v1.0.0 2014-04-29 12:26:51 +00:00			`ram (rwx) : ORIGIN = 0x20000000, LENGTH = 128K`
			`}`

startup: use custom reset_handler + group confidential data in one place + zero all SRAM where needed 2017-08-08 10:59:39 +00:00			`SECTIONS`
			`{`
			`.confidential (NOLOAD) : {`
			`*(confidential)`
adjust message sizes 2018-10-24 11:58:17 +00:00			`ASSERT ((SIZEOF(.confidential) <= 32K), "Error: Confidential section too big!");`
startup: use custom reset_handler + group confidential data in one place + zero all SRAM where needed 2017-08-08 10:59:39 +00:00			`} >ram`
			`}`

vendor/libopencm3: update to latest snapshot 2019-04-01 15:02:32 +00:00			`INCLUDE cortex-m-generic.ld`
startup: use custom reset_handler + group confidential data in one place + zero all SRAM where needed 2017-08-08 10:59:39 +00:00
			`_ram_start = ORIGIN(ram);`
			`_ram_end = ORIGIN(ram) + LENGTH(ram);`
chore(legacy): unify {go,return}_to_bootloader => stay_in_bootloader 2021-02-11 23:26:59 +00:00			`_stay_in_bootloader_flag_addr = ABSOLUTE(0x20010000);`
Put persistent variables at end of stack Two variables of the bootloader are persistent: - __stack_chk_guard is used by interrupt handlers - system_millis is used by timer interrupt and service routines Note that currently __stack_chk_guard is shared between unprivileged firmware and bootloader. If we get more variables later it may make sense to make a section for this. 2018-03-26 21:35:40 +00:00			`_stack = _ram_end - 8;`
			`__stack_chk_guard = _ram_end - 8;`
			`system_millis = _ram_end - 4;`
startup: use custom reset_handler + group confidential data in one place + zero all SRAM where needed 2017-08-08 10:59:39 +00:00
			`_data_size = SIZEOF(.data);`