From daf0cc60bff54be948c923cdc40aa80b82a27f6d Mon Sep 17 00:00:00 2001 From: patrickmt <40182064+patrickmt@users.noreply.github.com> Date: Fri, 28 Sep 2018 22:34:56 -0400 Subject: CTRL keyboard bootloader_jump support Adds support for CTRL keyboards to enter bootloader via bootloader_jump() --- tmk_core/protocol/arm_atsam/md_bootloader.h | 7 +++++++ tmk_core/protocol/arm_atsam/startup.c | 11 +++++++++++ 2 files changed, 18 insertions(+) (limited to 'tmk_core/protocol/arm_atsam') diff --git a/tmk_core/protocol/arm_atsam/md_bootloader.h b/tmk_core/protocol/arm_atsam/md_bootloader.h index 1316876c84..956145c313 100644 --- a/tmk_core/protocol/arm_atsam/md_bootloader.h +++ b/tmk_core/protocol/arm_atsam/md_bootloader.h @@ -7,6 +7,13 @@ extern uint32_t _erom; #define BOOTLOADER_SERIAL_MAX_SIZE 20 //DO NOT MODIFY! +#ifdef KEYBOARD_massdrop_ctrl +//WARNING: These are only for CTRL bootloader release "v2.18Jun 22 2018 17:28:08" for bootloader_jump support +extern uint32_t _eram; +#define BOOTLOADER_MAGIC 0x3B9ACA00 +#define MAGIC_ADDR (uint32_t *)(&_eram - 4) +#endif + #ifdef MD_BOOTLOADER #define MCU_HZ 48000000 diff --git a/tmk_core/protocol/arm_atsam/startup.c b/tmk_core/protocol/arm_atsam/startup.c index a62d02f1ca..f29fac179b 100644 --- a/tmk_core/protocol/arm_atsam/startup.c +++ b/tmk_core/protocol/arm_atsam/startup.c @@ -28,6 +28,7 @@ */ #include "samd51.h" +#include "md_bootloader.h" /* Initialize segments */ extern uint32_t _sfixed; @@ -500,6 +501,16 @@ const DeviceVectors exception_table = { */ void Reset_Handler(void) { +#ifdef KEYBOARD_massdrop_ctrl + /* WARNING: This is only for CTRL bootloader release "v2.18Jun 22 2018 17:28:08" for bootloader_jump support */ + if (*MAGIC_ADDR == BOOTLOADER_MAGIC) { + /* At this point, the bootloader's memory is initialized properly, so undo the jump to here, then jump back */ + *MAGIC_ADDR = 0x00000000; /* Change value to prevent potential bootloader entrance loop */ + __set_MSP(0x20008818); /* MSP according to bootloader */ + SCB->VTOR = 0x00000000; /* Vector table back to bootloader's */ + asm("bx %0"::"r"(0x00001267)); /* Jump past bootloader RCAUSE check using THUMB */ + } +#endif uint32_t *pSrc, *pDest; /* Initialize the relocate segment */ -- cgit v1.2.3