forked from mirrors/qmk_userspace
Add dual-bank STM32 bootloader support, given GPIO toggle on BOOT0 to charge RC circuit. (#8778)
This commit is contained in:
parent
d0abad27ab
commit
93e7a8f74c
3 changed files with 86 additions and 20 deletions
|
@ -3,28 +3,82 @@
|
|||
#include "ch.h"
|
||||
#include "hal.h"
|
||||
|
||||
#ifdef STM32_BOOTLOADER_ADDRESS
|
||||
/* STM32 */
|
||||
|
||||
/* This code should be checked whether it runs correctly on platforms */
|
||||
# define SYMVAL(sym) (uint32_t)(((uint8_t *)&(sym)) - ((uint8_t *)0))
|
||||
extern uint32_t __ram0_end__;
|
||||
# define BOOTLOADER_MAGIC 0xDEADBEEF
|
||||
# define MAGIC_ADDR (unsigned long *)(SYMVAL(__ram0_end__) - 4)
|
||||
#define SYMVAL(sym) (uint32_t)(((uint8_t *)&(sym)) - ((uint8_t *)0))
|
||||
#define BOOTLOADER_MAGIC 0xDEADBEEF
|
||||
#define MAGIC_ADDR (unsigned long *)(SYMVAL(__ram0_end__) - 4)
|
||||
|
||||
#ifndef STM32_BOOTLOADER_DUAL_BANK
|
||||
# define STM32_BOOTLOADER_DUAL_BANK FALSE
|
||||
#endif
|
||||
|
||||
#if STM32_BOOTLOADER_DUAL_BANK
|
||||
|
||||
// Need pin definitions
|
||||
# include "config_common.h"
|
||||
|
||||
# ifndef STM32_BOOTLOADER_DUAL_BANK_GPIO
|
||||
# error "No STM32_BOOTLOADER_DUAL_BANK_GPIO defined, don't know which pin to toggle"
|
||||
# endif
|
||||
|
||||
# ifndef STM32_BOOTLOADER_DUAL_BANK_POLARITY
|
||||
# define STM32_BOOTLOADER_DUAL_BANK_POLARITY 0
|
||||
# endif
|
||||
|
||||
# ifndef STM32_BOOTLOADER_DUAL_BANK_DELAY
|
||||
# define STM32_BOOTLOADER_DUAL_BANK_DELAY 100000
|
||||
# endif
|
||||
|
||||
extern uint32_t __ram0_end__;
|
||||
|
||||
# define bootdelay(loopcount) \
|
||||
do { \
|
||||
for (int i = 0; i < loopcount; ++i) { \
|
||||
__asm__ volatile("nop\n\t" \
|
||||
"nop\n\t" \
|
||||
"nop\n\t"); \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
void bootloader_jump(void) {
|
||||
*MAGIC_ADDR = BOOTLOADER_MAGIC; // set magic flag => reset handler will jump into boot loader
|
||||
NVIC_SystemReset();
|
||||
}
|
||||
|
||||
void enter_bootloader_mode_if_requested(void) {
|
||||
unsigned long *check = MAGIC_ADDR;
|
||||
if (*check == BOOTLOADER_MAGIC) {
|
||||
*check = 0;
|
||||
|
||||
// For STM32 MCUs with dual-bank flash, and we're incapable of jumping to the bootloader. The first valid flash
|
||||
// bank is executed unconditionally after a reset, so it doesn't enter DFU unless BOOT0 is high. Instead, we do
|
||||
// it with hardware...in this case, we pull a GPIO high/low depending on the configuration, connects 3.3V to
|
||||
// BOOT0's RC charging circuit, lets it charge the capacitor, and issue a system reset. See the QMK discord
|
||||
// #hardware channel pins for an example circuit.
|
||||
palSetPadMode(PAL_PORT(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_PAD(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_MODE_OUTPUT_PUSHPULL);
|
||||
# if STM32_BOOTLOADER_DUAL_BANK_POLARITY
|
||||
palSetPad(PAL_PORT(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_PAD(STM32_BOOTLOADER_DUAL_BANK_GPIO));
|
||||
# else
|
||||
palClearPad(PAL_PORT(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_PAD(STM32_BOOTLOADER_DUAL_BANK_GPIO));
|
||||
# endif
|
||||
|
||||
// Wait for a while for the capacitor to charge
|
||||
bootdelay(STM32_BOOTLOADER_DUAL_BANK_DELAY);
|
||||
|
||||
// Issue a system reset to get the ROM bootloader to execute, with BOOT0 high
|
||||
NVIC_SystemReset();
|
||||
}
|
||||
}
|
||||
|
||||
#elif defined(STM32_BOOTLOADER_ADDRESS) // STM32_BOOTLOADER_DUAL_BANK
|
||||
|
||||
extern uint32_t __ram0_end__;
|
||||
|
||||
/** \brief Jump to the bootloader
|
||||
*
|
||||
* FIXME: needs doc
|
||||
*/
|
||||
void bootloader_jump(void) {
|
||||
*MAGIC_ADDR = BOOTLOADER_MAGIC; // set magic flag => reset handler will jump into boot loader
|
||||
NVIC_SystemReset();
|
||||
}
|
||||
|
||||
/** \brief Enter bootloader mode if requested
|
||||
*
|
||||
* FIXME: needs doc
|
||||
*/
|
||||
void enter_bootloader_mode_if_requested(void) {
|
||||
unsigned long *check = MAGIC_ADDR;
|
||||
if (*check == BOOTLOADER_MAGIC) {
|
||||
|
@ -41,7 +95,7 @@ void enter_bootloader_mode_if_requested(void) {
|
|||
}
|
||||
}
|
||||
|
||||
#elif defined(KL2x) || defined(K20x) /* STM32_BOOTLOADER_ADDRESS */
|
||||
#elif defined(KL2x) || defined(K20x) // STM32_BOOTLOADER_DUAL_BANK // STM32_BOOTLOADER_ADDRESS
|
||||
/* Kinetis */
|
||||
|
||||
# if defined(KIIBOHD_BOOTLOADER)
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue