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authorpatrickmt <40182064+patrickmt@users.noreply.github.com>2018-09-28 22:34:56 -0400
committerJack Humbert <jack.humb@gmail.com>2018-09-28 23:09:53 -0400
commitdaf0cc60bff54be948c923cdc40aa80b82a27f6d (patch)
tree121de3f118e7fbc325eb79d23e3dc58c95b99e76
parent20a10bd0846d502069203419f57e36fd7467df5e (diff)
CTRL keyboard bootloader_jump support
Adds support for CTRL keyboards to enter bootloader via bootloader_jump()
-rw-r--r--lib/arm_atsam/packs/atmel/SAMD51_DFP/1.0.70/gcc/gcc/samd51j18a_flash.ld3
-rw-r--r--tmk_core/common/arm_atsam/bootloader.c32
-rw-r--r--tmk_core/protocol/arm_atsam/md_bootloader.h7
-rw-r--r--tmk_core/protocol/arm_atsam/startup.c11
4 files changed, 38 insertions, 15 deletions
diff --git a/lib/arm_atsam/packs/atmel/SAMD51_DFP/1.0.70/gcc/gcc/samd51j18a_flash.ld b/lib/arm_atsam/packs/atmel/SAMD51_DFP/1.0.70/gcc/gcc/samd51j18a_flash.ld
index 35db619717..1c63547863 100644
--- a/lib/arm_atsam/packs/atmel/SAMD51_DFP/1.0.70/gcc/gcc/samd51j18a_flash.ld
+++ b/lib/arm_atsam/packs/atmel/SAMD51_DFP/1.0.70/gcc/gcc/samd51j18a_flash.ld
@@ -51,6 +51,9 @@ HEAP_SIZE = DEFINED(HEAP_SIZE) ? HEAP_SIZE : DEFINED(__heap_size__) ? __heap_siz
_srom = ORIGIN(rom);
_lrom = LENGTH(rom);
_erom = ORIGIN(rom) + LENGTH(rom);
+_sram = ORIGIN(ram);
+_lram = LENGTH(ram);
+_eram = ORIGIN(ram) + LENGTH(ram);
/* Section Definitions */
SECTIONS
diff --git a/tmk_core/common/arm_atsam/bootloader.c b/tmk_core/common/arm_atsam/bootloader.c
index 9701a62196..ba71bfeb0b 100644
--- a/tmk_core/common/arm_atsam/bootloader.c
+++ b/tmk_core/common/arm_atsam/bootloader.c
@@ -16,25 +16,27 @@
#include "bootloader.h"
#include "samd51j18a.h"
+#include "md_bootloader.h"
//Set watchdog timer to reset. Directs the bootloader to stay in programming mode.
-void bootloader_jump(void)
-{
- //Keyboards released with certain bootloader can not enter bootloader from app until workaround is created
- uint8_t ver_no_jump[] = "v2.18Jun 22 2018 17:28:08";
- uint8_t *ver_check = ver_no_jump;
- uint8_t *boot_check = (uint8_t *)0x21A0;
- while (*ver_check && *boot_check == *ver_check)
- {
- ver_check++;
- boot_check++;
+void bootloader_jump(void) {
+#ifdef KEYBOARD_massdrop_ctrl
+ //CTRL keyboards released with bootloader version below must use RAM method. Otherwise use WDT method.
+ uint8_t ver_ram_method[] = "v2.18Jun 22 2018 17:28:08"; //The version to match (NULL terminated by compiler)
+ uint8_t *ver_check = ver_ram_method; //Pointer to version match string for traversal
+ uint8_t *ver_rom = (uint8_t *)0x21A0; //Pointer to address in ROM where this specific bootloader version would exist
+
+ while (*ver_check && *ver_rom == *ver_check) { //While there are check version characters to match and bootloader's version matches check's version
+ ver_check++; //Move check version pointer to next character
+ ver_rom++; //Move ROM version pointer to next character
}
- if (!*ver_check)
- {
- //Version match
- //Software workaround would go here
- return; //No software restart method implemented... must use hardware reset button
+
+ if (!*ver_check) { //If check version pointer is NULL, all characters have matched
+ *MAGIC_ADDR = BOOTLOADER_MAGIC; //Set magic number into RAM
+ NVIC_SystemReset(); //Perform system reset
+ while (1) {} //Won't get here
}
+#endif
WDT->CTRLA.bit.ENABLE = 0;
while (WDT->SYNCBUSY.bit.ENABLE) {}
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 */