diff --git a/Makefile b/Makefile
index 9ee2c5b..7c2e4ee 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,8 @@
 # Parameter for current board
-#BOARD?=system76/galp3-c
+BOARD?=system76/galp3-c
 #BOARD?=arduino/mega2560
 #BOARD?=arduino/micro
-BOARD?=arduino/uno
+#BOARD?=arduino/uno
 
 # Set build directory
 BUILD=build/$(BOARD)
diff --git a/src/board/system76/galp3-c/include/board/pwm.h b/src/board/system76/galp3-c/include/board/pwm.h
new file mode 100644
index 0000000..256fde8
--- /dev/null
+++ b/src/board/system76/galp3-c/include/board/pwm.h
@@ -0,0 +1,8 @@
+#ifndef _BOARD_PWM_H
+#define _BOARD_PWM_H
+
+#include <ec/pwm.h>
+
+void pwm_init(void);
+
+#endif // _BOARD_PWM_H
diff --git a/src/board/system76/galp3-c/main.c b/src/board/system76/galp3-c/main.c
index 7b72bfb..d0328f2 100644
--- a/src/board/system76/galp3-c/main.c
+++ b/src/board/system76/galp3-c/main.c
@@ -9,6 +9,7 @@
 #include <board/kbscan.h>
 #include <board/pmc.h>
 #include <board/ps2.h>
+#include <board/pwm.h>
 
 void external_0(void) __interrupt(0) {
     printf("external_0\n");
@@ -40,8 +41,9 @@ void init(void) {
     kbc_init();
     pmc_init();
     kbscan_init();
+    pwm_init();
 
-    //TODO: INTC, PECI, PWM, SMBUS
+    //TODO: INTC, PECI, SMBUS
 
     // PECI information can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/design-guides/core-i7-lga-2011-guide.pdf
 }
diff --git a/src/board/system76/galp3-c/pwm.c b/src/board/system76/galp3-c/pwm.c
new file mode 100644
index 0000000..3a66f2a
--- /dev/null
+++ b/src/board/system76/galp3-c/pwm.c
@@ -0,0 +1,8 @@
+#include <board/pwm.h>
+
+void pwm_init(void) {
+    // Set T0CHSEL to TACH0A and T1CHSEL to TACH1A
+    TSWCTLR = 0;
+    // Turn on the CPU fan at full blast (temperature control TODO)
+    DCR2 = 0xFF;
+}
diff --git a/src/ec/it8587e/include/ec/pwm.h b/src/ec/it8587e/include/ec/pwm.h
new file mode 100644
index 0000000..5967f27
--- /dev/null
+++ b/src/ec/it8587e/include/ec/pwm.h
@@ -0,0 +1,34 @@
+#ifndef _EC_PWM_H
+#define _EC_PWM_H
+
+#include <stdint.h>
+
+// Duty cycle register 0
+__xdata volatile uint8_t __at(0x1802) DCR0;
+// Duty cycle register 1
+__xdata volatile uint8_t __at(0x1803) DCR1;
+// Duty cycle register 2
+__xdata volatile uint8_t __at(0x1804) DCR2;
+// Duty cycle register 3
+__xdata volatile uint8_t __at(0x1805) DCR3;
+// Duty cycle register 4
+__xdata volatile uint8_t __at(0x1806) DCR4;
+// Duty cycle register 5
+__xdata volatile uint8_t __at(0x1807) DCR5;
+// Duty cycle register 6
+__xdata volatile uint8_t __at(0x1808) DCR6;
+// Duty cycle register 7
+__xdata volatile uint8_t __at(0x1809) DCR7;
+
+// Fan one tachometer least significant byte reading register
+__xdata volatile uint8_t __at(0x181E) F1TLRR;
+// Fan one tachometer most significant byte reading register
+__xdata volatile uint8_t __at(0x181F) F1TMRR;
+// Fan two tachometer least significant byte reading register
+__xdata volatile uint8_t __at(0x1820) F2TLRR;
+// Fan two tachometer most significant byte reading register
+__xdata volatile uint8_t __at(0x1821) F2TMRR;
+// Tachometer switch control register
+__xdata volatile uint8_t __at(0x1848) TSWCTLR;
+
+#endif // _EC_PWM_H