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authorRyan <fauxpark@gmail.com>2021-12-27 21:10:07 +1100
committerGitHub <noreply@github.com>2021-12-27 21:10:07 +1100
commit6bc870d899c474bce82457699ec4b753d1538123 (patch)
tree600b8dda41f4b90f98199d4afd3037374a679a74 /platforms/avr/bootloaders/halfkay.c
parentcffe143ca20d938c910b59410dcd3d96dd7d433b (diff)
Refactor `bootloader_jump()` implementations (#15450)
* Refactor `bootloader_jump()` implementations * Fix tests? * Rename `atmel-samba` to `md-boot`
Diffstat (limited to 'platforms/avr/bootloaders/halfkay.c')
-rw-r--r--platforms/avr/bootloaders/halfkay.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/platforms/avr/bootloaders/halfkay.c b/platforms/avr/bootloaders/halfkay.c
new file mode 100644
index 0000000000..abef86980b
--- /dev/null
+++ b/platforms/avr/bootloaders/halfkay.c
@@ -0,0 +1,129 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "bootloader.h"
+
+#include <avr/interrupt.h>
+#include <util/delay.h>
+
+__attribute__((weak))
+void bootloader_jump(void) {
+ // http://www.pjrc.com/teensy/jump_to_bootloader.html
+
+ cli();
+ // disable watchdog, if enabled (it's not)
+ // disable all peripherals
+ // a shutdown call might make sense here
+ UDCON = 1;
+ USBCON = (1 << FRZCLK); // disable USB
+ UCSR1B = 0;
+ _delay_ms(5);
+
+#if defined(__AVR_AT90USB162__) // Teensy 1.0
+ EIMSK = 0;
+ PCICR = 0;
+ SPCR = 0;
+ ACSR = 0;
+ EECR = 0;
+ TIMSK0 = 0;
+ TIMSK1 = 0;
+ UCSR1B = 0;
+ DDRB = 0;
+ DDRC = 0;
+ DDRD = 0;
+ PORTB = 0;
+ PORTC = 0;
+ PORTD = 0;
+ asm volatile("jmp 0x3E00");
+#elif defined(__AVR_ATmega32U4__) // Teensy 2.0
+ EIMSK = 0;
+ PCICR = 0;
+ SPCR = 0;
+ ACSR = 0;
+ EECR = 0;
+ ADCSRA = 0;
+ TIMSK0 = 0;
+ TIMSK1 = 0;
+ TIMSK3 = 0;
+ TIMSK4 = 0;
+ UCSR1B = 0;
+ TWCR = 0;
+ DDRB = 0;
+ DDRC = 0;
+ DDRD = 0;
+ DDRE = 0;
+ DDRF = 0;
+ TWCR = 0;
+ PORTB = 0;
+ PORTC = 0;
+ PORTD = 0;
+ PORTE = 0;
+ PORTF = 0;
+ asm volatile("jmp 0x7E00");
+#elif defined(__AVR_AT90USB646__) // Teensy++ 1.0
+ EIMSK = 0;
+ PCICR = 0;
+ SPCR = 0;
+ ACSR = 0;
+ EECR = 0;
+ ADCSRA = 0;
+ TIMSK0 = 0;
+ TIMSK1 = 0;
+ TIMSK2 = 0;
+ TIMSK3 = 0;
+ UCSR1B = 0;
+ TWCR = 0;
+ DDRA = 0;
+ DDRB = 0;
+ DDRC = 0;
+ DDRD = 0;
+ DDRE = 0;
+ DDRF = 0;
+ PORTA = 0;
+ PORTB = 0;
+ PORTC = 0;
+ PORTD = 0;
+ PORTE = 0;
+ PORTF = 0;
+ asm volatile("jmp 0xFC00");
+#elif defined(__AVR_AT90USB1286__) // Teensy++ 2.0
+ EIMSK = 0;
+ PCICR = 0;
+ SPCR = 0;
+ ACSR = 0;
+ EECR = 0;
+ ADCSRA = 0;
+ TIMSK0 = 0;
+ TIMSK1 = 0;
+ TIMSK2 = 0;
+ TIMSK3 = 0;
+ UCSR1B = 0;
+ TWCR = 0;
+ DDRA = 0;
+ DDRB = 0;
+ DDRC = 0;
+ DDRD = 0;
+ DDRE = 0;
+ DDRF = 0;
+ PORTA = 0;
+ PORTB = 0;
+ PORTC = 0;
+ PORTD = 0;
+ PORTE = 0;
+ PORTF = 0;
+ asm volatile("jmp 0x1FC00");
+#endif
+}