diff --git a/fusee/fusee-primary/src/hwinit.c b/fusee/fusee-primary/src/hwinit.c
index adc701ce4..ea156cc02 100644
--- a/fusee/fusee-primary/src/hwinit.c
+++ b/fusee/fusee-primary/src/hwinit.c
@@ -34,8 +34,7 @@
 #include "timers.h"
 #include "uart.h"
 
-void config_oscillators()
-{
+static void config_oscillators(void) {
     volatile tegra_car_t *car = car_get_regs();
     volatile tegra_pmc_t *pmc = pmc_get_regs();
     
@@ -57,8 +56,7 @@ void config_oscillators()
     car->clk_sys_rate = 2;
 }
 
-void config_gpios()
-{
+static void config_gpios_erista(void) {
     volatile tegra_pinmux_t *pinmux = pinmux_get_regs();
     
     pinmux->uart2_tx = 0;
@@ -79,15 +77,50 @@ void config_gpios()
     i2c_config(I2C_5);
     uart_config(UART_A);
 
-    /* Configure volume up/down as inputs. */
+    /* Configure volume up/down buttons as inputs. */
     gpio_configure_mode(GPIO_BUTTON_VOL_UP, GPIO_MODE_GPIO);
     gpio_configure_mode(GPIO_BUTTON_VOL_DOWN, GPIO_MODE_GPIO);
     gpio_configure_direction(GPIO_BUTTON_VOL_UP, GPIO_DIRECTION_INPUT);
     gpio_configure_direction(GPIO_BUTTON_VOL_DOWN, GPIO_DIRECTION_INPUT);
 }
 
-void config_pmc_scratch()
-{
+static void config_gpios_mariko(void) {
+    volatile tegra_pinmux_t *pinmux = pinmux_get_regs();    
+    uint32_t hardware_type = fuse_get_hardware_type();
+
+    /* Only for HardwareType_Iowa and HardwareType_Five. */
+    if ((hardware_type == 3) || (hardware_type == 5)) {
+        pinmux->uart2_tx = 0;
+        pinmux->uart3_tx = 0;
+        gpio_configure_mode(TEGRA_GPIO(G, 0), GPIO_MODE_GPIO);
+        gpio_configure_mode(TEGRA_GPIO(D, 1), GPIO_MODE_GPIO);
+        gpio_configure_direction(TEGRA_GPIO(G, 0), GPIO_DIRECTION_INPUT);
+        gpio_configure_direction(TEGRA_GPIO(D, 1), GPIO_DIRECTION_INPUT);
+    }
+    
+    pinmux->pe6 = PINMUX_INPUT;
+    pinmux->ph6 = PINMUX_INPUT;
+    gpio_configure_mode(TEGRA_GPIO(E, 6), GPIO_MODE_GPIO);
+    gpio_configure_mode(TEGRA_GPIO(H, 6), GPIO_MODE_GPIO);
+    gpio_configure_direction(TEGRA_GPIO(E, 6), GPIO_DIRECTION_INPUT);
+    gpio_configure_direction(TEGRA_GPIO(H, 6), GPIO_DIRECTION_INPUT);
+
+    i2c_config(I2C_1);
+    i2c_config(I2C_5);
+    uart_config(UART_A);
+
+    /* Configure volume up/down buttons as inputs. */
+    gpio_configure_mode(GPIO_BUTTON_VOL_UP, GPIO_MODE_GPIO);
+    gpio_configure_mode(GPIO_BUTTON_VOL_DOWN, GPIO_MODE_GPIO);
+    gpio_configure_direction(GPIO_BUTTON_VOL_UP, GPIO_DIRECTION_INPUT);
+    gpio_configure_direction(GPIO_BUTTON_VOL_DOWN, GPIO_DIRECTION_INPUT);
+    
+    /* Configure home button as input. */
+    gpio_configure_mode(TEGRA_GPIO(Y, 1), GPIO_MODE_GPIO);
+    gpio_configure_direction(TEGRA_GPIO(Y, 1), GPIO_DIRECTION_INPUT);
+}
+
+static void config_pmc_scratch(void) {
     volatile tegra_pmc_t *pmc = pmc_get_regs();
     
     pmc->scratch20 &= 0xFFF3FFFF;
@@ -95,8 +128,7 @@ void config_pmc_scratch()
     pmc->secure_scratch21 |= 0x10;
 }
 
-void mbist_workaround()
-{
+static void mbist_workaround(void) {
     volatile tegra_car_t *car = car_get_regs();
     
     car->clk_source_sor1 = ((car->clk_source_sor1 | 0x8000) & 0xFFFFBFFF);
@@ -151,8 +183,7 @@ void mbist_workaround()
     car->clk_source_nvenc = ((car->clk_source_nvenc & 0x1FFFFFFF) | 0x80000000);
 }
 
-void config_se_brom()
-{
+static void config_se_brom(void) {
     volatile tegra_fuse_chip_common_t *fuse_chip = fuse_chip_common_get_regs();
     volatile tegra_se_t *se = se_get_regs();
     volatile tegra_pmc_t *pmc = pmc_get_regs();
@@ -178,8 +209,7 @@ void config_se_brom()
     pmc->reset_status = 0;
 }
 
-void nx_hwinit()
-{
+void nx_hwinit_erista(bool enable_log) {
     volatile tegra_pmc_t *pmc = pmc_get_regs();
     volatile tegra_car_t *car = car_get_regs();
     
@@ -210,13 +240,13 @@ void nx_hwinit()
     /* Configure GPIOs. */
     /* NOTE: [3.0.0+] Part of the GPIO configuration is skipped if the unit is SDEV. */
     /* NOTE: [6.0.0+] The GPIO configuration's order was changed a bit. */
-    config_gpios();
+    config_gpios_erista();
 
-    /* Uncomment for UART debugging. */
-    /*
-    clkrst_reboot(CARDEVICE_UARTC);
-    uart_init(UART_C, 115200);
-    */
+    /* UART debugging. */
+    if (enable_log) {
+        clkrst_reboot(CARDEVICE_UARTA);
+        uart_init(UART_A, 115200);
+    }
     
     /* Reboot CL-DVFS. */
     clkrst_reboot(CARDEVICE_CL_DVFS);
@@ -294,4 +324,74 @@ void nx_hwinit()
     
     /* Save SDRAM LP0 parameters. */
     sdram_lp0_save_params(sdram_get_params());
+}
+
+void nx_hwinit_mariko(bool enable_log) {
+    volatile tegra_car_t *car = car_get_regs();
+    
+    /* Enable SE clock. */
+    clkrst_reboot(CARDEVICE_SE);
+
+    /* Initialize the fuse driver. */
+    fuse_init();
+
+    /* Initialize the memory controller. */
+    mc_enable();
+
+    /* Configure oscillators. */
+    config_oscillators();
+    
+    /* Disable pinmux tristate input clamping. */
+    APB_MISC_PP_PINMUX_GLOBAL_0 = 0;
+    
+    /* Configure GPIOs. */
+    config_gpios_mariko();
+
+    /* UART debugging. */
+    if (enable_log) {
+        clkrst_reboot(CARDEVICE_UARTA);
+        uart_init(UART_A, 115200);
+    }
+    
+    /* Enable CL-DVFS clock. */
+    clkrst_reboot(CARDEVICE_CL_DVFS);
+    
+    /* Enable I2C1 clock. */
+    clkrst_reboot(CARDEVICE_I2C1);
+    
+    /* Enable I2C5 clock. */
+    clkrst_reboot(CARDEVICE_I2C5);
+    
+    /* Enable TZRAM clock. */
+    clkrst_reboot(CARDEVICE_TZRAM);
+
+    /* Initialize I2C5. */
+    i2c_init(I2C_5);
+    
+    /* Configure the PMIC. */
+    uint8_t val = 0x40;
+    i2c_send(I2C_5, MAX77620_PWR_I2C_ADDR, MAX77620_REG_CNFGBBC, &val, 1);
+    val = 0x78;
+    i2c_send(I2C_5, MAX77620_PWR_I2C_ADDR, MAX77620_REG_ONOFFCNFG1, &val, 1);
+    
+    /* Configure SD0 voltage. */
+    val = 0x24;
+    i2c_send(I2C_5, MAX77620_PWR_I2C_ADDR, MAX77620_REG_SD0, &val, 1);
+    
+    /* Enable LDO8 in HardwareType_Hoag only. */
+    if (fuse_get_hardware_type() == 2) {
+        val = 0xE8;
+        i2c_send(I2C_5, MAX77620_PWR_I2C_ADDR, MAX77620_REG_LDO8_CFG, &val, 1);
+    }
+    
+    /* Initialize I2C1. */
+    i2c_init(I2C_1);
+    
+    /* Set super clock burst policy. */
+    car->sclk_brst_pol = ((car->sclk_brst_pol & 0xFFFF8888) | 0x3333);
+    
+    /* Mariko only PMC configuration. */
+    MAKE_PMC_REG(0xBE8) &= 0xFFFFFFFE;
+    MAKE_PMC_REG(0xBF0) = 0x3;
+    MAKE_PMC_REG(0xBEC) = 0x3;
 }
\ No newline at end of file
diff --git a/fusee/fusee-primary/src/hwinit.h b/fusee/fusee-primary/src/hwinit.h
index a165346e8..f14638eb0 100644
--- a/fusee/fusee-primary/src/hwinit.h
+++ b/fusee/fusee-primary/src/hwinit.h
@@ -19,9 +19,12 @@
 #ifndef FUSEE_HWINIT_H_
 #define FUSEE_HWINIT_H_
 
+#include <stdbool.h>
+
 #define I2S_BASE 0x702D1000
 #define MAKE_I2S_REG(n) MAKE_REG32(I2S_BASE + n)
 
-void nx_hwinit();
+void nx_hwinit_mariko(bool enable_log);
+void nx_hwinit_erista(bool enable_log);
 
 #endif
diff --git a/fusee/fusee-primary/src/main.c b/fusee/fusee-primary/src/main.c
index adfaa5310..f908a8578 100644
--- a/fusee/fusee-primary/src/main.c
+++ b/fusee/fusee-primary/src/main.c
@@ -17,6 +17,7 @@
 #include "utils.h"
 #include "exception_handlers.h"
 #include "panic.h"
+#include "fuse.h"
 #include "hwinit.h"
 #include "di.h"
 #include "timers.h"
@@ -118,7 +119,11 @@ static void cleanup_display(void) {
 
 static void setup_env(void) {
     /* Initialize hardware. */
-    nx_hwinit();
+    if (fuse_get_soc_type() == 1) {
+        nx_hwinit_mariko(false);
+    } else {
+        nx_hwinit_erista(false);
+    }
 
     /* Set up the exception handlers. */
     setup_exception_handlers();