CTRL keyboard bootloader_jump support
Adds support for CTRL keyboards to enter bootloader via bootloader_jump()master
parent
20a10bd084
commit
daf0cc60bf
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@ -51,6 +51,9 @@ HEAP_SIZE = DEFINED(HEAP_SIZE) ? HEAP_SIZE : DEFINED(__heap_size__) ? __heap_siz
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_srom = ORIGIN(rom);
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_lrom = LENGTH(rom);
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_erom = ORIGIN(rom) + LENGTH(rom);
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_sram = ORIGIN(ram);
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_lram = LENGTH(ram);
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_eram = ORIGIN(ram) + LENGTH(ram);
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/* Section Definitions */
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SECTIONS
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@ -16,25 +16,27 @@
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#include "bootloader.h"
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#include "samd51j18a.h"
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#include "md_bootloader.h"
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//Set watchdog timer to reset. Directs the bootloader to stay in programming mode.
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void bootloader_jump(void)
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{
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//Keyboards released with certain bootloader can not enter bootloader from app until workaround is created
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uint8_t ver_no_jump[] = "v2.18Jun 22 2018 17:28:08";
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uint8_t *ver_check = ver_no_jump;
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uint8_t *boot_check = (uint8_t *)0x21A0;
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while (*ver_check && *boot_check == *ver_check)
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{
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ver_check++;
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boot_check++;
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void bootloader_jump(void) {
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#ifdef KEYBOARD_massdrop_ctrl
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//CTRL keyboards released with bootloader version below must use RAM method. Otherwise use WDT method.
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uint8_t ver_ram_method[] = "v2.18Jun 22 2018 17:28:08"; //The version to match (NULL terminated by compiler)
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uint8_t *ver_check = ver_ram_method; //Pointer to version match string for traversal
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uint8_t *ver_rom = (uint8_t *)0x21A0; //Pointer to address in ROM where this specific bootloader version would exist
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while (*ver_check && *ver_rom == *ver_check) { //While there are check version characters to match and bootloader's version matches check's version
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ver_check++; //Move check version pointer to next character
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ver_rom++; //Move ROM version pointer to next character
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}
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if (!*ver_check)
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{
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//Version match
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//Software workaround would go here
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return; //No software restart method implemented... must use hardware reset button
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if (!*ver_check) { //If check version pointer is NULL, all characters have matched
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*MAGIC_ADDR = BOOTLOADER_MAGIC; //Set magic number into RAM
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NVIC_SystemReset(); //Perform system reset
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while (1) {} //Won't get here
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}
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#endif
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WDT->CTRLA.bit.ENABLE = 0;
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while (WDT->SYNCBUSY.bit.ENABLE) {}
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@ -7,6 +7,13 @@ extern uint32_t _erom;
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#define BOOTLOADER_SERIAL_MAX_SIZE 20 //DO NOT MODIFY!
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#ifdef KEYBOARD_massdrop_ctrl
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//WARNING: These are only for CTRL bootloader release "v2.18Jun 22 2018 17:28:08" for bootloader_jump support
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extern uint32_t _eram;
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#define BOOTLOADER_MAGIC 0x3B9ACA00
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#define MAGIC_ADDR (uint32_t *)(&_eram - 4)
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#endif
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#ifdef MD_BOOTLOADER
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#define MCU_HZ 48000000
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@ -28,6 +28,7 @@
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*/
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#include "samd51.h"
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#include "md_bootloader.h"
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/* Initialize segments */
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extern uint32_t _sfixed;
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@ -500,6 +501,16 @@ const DeviceVectors exception_table = {
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*/
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void Reset_Handler(void)
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{
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#ifdef KEYBOARD_massdrop_ctrl
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/* WARNING: This is only for CTRL bootloader release "v2.18Jun 22 2018 17:28:08" for bootloader_jump support */
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if (*MAGIC_ADDR == BOOTLOADER_MAGIC) {
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/* At this point, the bootloader's memory is initialized properly, so undo the jump to here, then jump back */
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*MAGIC_ADDR = 0x00000000; /* Change value to prevent potential bootloader entrance loop */
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__set_MSP(0x20008818); /* MSP according to bootloader */
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SCB->VTOR = 0x00000000; /* Vector table back to bootloader's */
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asm("bx %0"::"r"(0x00001267)); /* Jump past bootloader RCAUSE check using THUMB */
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}
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#endif
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uint32_t *pSrc, *pDest;
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/* Initialize the relocate segment */
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