fusee: perform only pmic reboots on mariko

fusee/fusee-primary/fusee-primary-main/src/utils.c

@@ -22,9 +22,11 @@
 #include "fuse.h"
 #include "pmc.h"
 #include "timers.h"
+#include "i2c.h"
 #include "panic.h"
 #include "car.h"
 #include "btn.h"
+#include "max77620.h"
 #include "../../../fusee/common/log.h"
 #include "../../../fusee/common/vsprintf.h"
 #include "../../../fusee/common/display/video_fb.h"
@@ -37,6 +39,37 @@
 #undef u8
 #undef u32
 
+static bool is_soc_mariko(void) {
+    return fuse_get_soc_type() == 1;
+}
+
+__attribute__((noreturn)) static void shutdown_system(bool reboot) {
+    /* Ensure that i2c5 is in a coherent state. */
+    i2c_config(I2C_5);
+    clkrst_reboot(CARDEVICE_I2C5);
+    i2c_init(I2C_5);
+
+    /* Get value, set or clear software reset mask. */
+    uint8_t on_off_2_val = 0;
+    i2c_query(I2C_5, MAX77620_PWR_I2C_ADDR, MAX77620_REG_ONOFFCNFG2, &on_off_2_val, 1);
+    if (reboot) {
+        on_off_2_val |= MAX77620_ONOFFCNFG2_SFT_RST_WK;
+    } else {
+        on_off_2_val &= ~(MAX77620_ONOFFCNFG2_SFT_RST_WK);
+    }
+    i2c_send(I2C_5, MAX77620_PWR_I2C_ADDR, MAX77620_REG_ONOFFCNFG2, &on_off_2_val, 1);
+
+    /* Set software reset mask. */
+    uint8_t on_off_1_val = 0;
+    i2c_query(I2C_5, MAX77620_PWR_I2C_ADDR, MAX77620_REG_ONOFFCNFG1, &on_off_1_val, 1);
+    on_off_1_val |= MAX77620_ONOFFCNFG1_SFT_RST;
+    i2c_send(I2C_5, MAX77620_PWR_I2C_ADDR, MAX77620_REG_ONOFFCNFG1, &on_off_1_val, 1);
+
+    while (true) {
+        /* Wait for reboot. */
+    }
+}
+
 extern uint8_t __reboot_start__[], __reboot_end__[];
 
 void wait(uint32_t microseconds) {
@@ -70,6 +103,10 @@ __attribute__((noreturn)) void pmc_reboot(uint32_t scratch0) {
 }
 
 __attribute__((noreturn)) void reboot_to_self(void) {
+    if (is_soc_mariko()) {
+        /* If mariko, we can't reboot to self/payload, so just reboot. */
+        shutdown_system(true);
+    } else {
         /* Patch SDRAM init to perform an SVC immediately after second write */
         APBDEV_PMC_SCRATCH45_0 = 0x2E38DFFF;
         APBDEV_PMC_SCRATCH46_0 = 0x6001DC28;
@@ -106,7 +143,7 @@ __attribute__((noreturn)) void reboot_to_self(void) {
         while (true) {
             /* Wait for reboot. */
         }
-
+    }
 }
 
 __attribute__((noreturn)) void wait_for_button_and_reboot(void) {

fusee/fusee-secondary/src/utils.c

@@ -23,7 +23,9 @@
 #include "car.h"
 #include "timers.h"
 #include "btn.h"
+#include "i2c.h"
 #include "panic.h"
+#include "max77620.h"
 #include "../../../fusee/common/log.h"
 
 #include <stdio.h>
@@ -37,6 +39,37 @@
 #undef u8
 #undef u32
 
+static bool is_soc_mariko(void) {
+    return fuse_get_soc_type() == 1;
+}
+
+__attribute__((noreturn)) static void shutdown_system(bool reboot) {
+    /* Ensure that i2c5 is in a coherent state. */
+    i2c_config(I2C_5);
+    clkrst_reboot(CARDEVICE_I2C5);
+    i2c_init(I2C_5);
+
+    /* Get value, set or clear software reset mask. */
+    uint8_t on_off_2_val = 0;
+    i2c_query(I2C_5, MAX77620_PWR_I2C_ADDR, MAX77620_REG_ONOFFCNFG2, &on_off_2_val, 1);
+    if (reboot) {
+        on_off_2_val |= MAX77620_ONOFFCNFG2_SFT_RST_WK;
+    } else {
+        on_off_2_val &= ~(MAX77620_ONOFFCNFG2_SFT_RST_WK);
+    }
+    i2c_send(I2C_5, MAX77620_PWR_I2C_ADDR, MAX77620_REG_ONOFFCNFG2, &on_off_2_val, 1);
+
+    /* Set software reset mask. */
+    uint8_t on_off_1_val = 0;
+    i2c_query(I2C_5, MAX77620_PWR_I2C_ADDR, MAX77620_REG_ONOFFCNFG1, &on_off_1_val, 1);
+    on_off_1_val |= MAX77620_ONOFFCNFG1_SFT_RST;
+    i2c_send(I2C_5, MAX77620_PWR_I2C_ADDR, MAX77620_REG_ONOFFCNFG1, &on_off_1_val, 1);
+
+    while (true) {
+        /* Wait for reboot. */
+    }
+}
+
 void wait(uint32_t microseconds) {
     uint32_t old_time = TIMERUS_CNTR_1US_0;
     while (TIMERUS_CNTR_1US_0 - old_time <= microseconds) {
@@ -67,6 +100,10 @@ __attribute__((noreturn)) void pmc_reboot(uint32_t scratch0) {
 }
 
 __attribute__((noreturn)) static void reboot_to_payload(void) {
+    if (is_soc_mariko()) {
+        /* Reboot to payload isn't possible on mariko, so just do normal reboot. */
+        shutdown_system(true);
+    } else {
         /* Patch SDRAM init to perform an SVC immediately after second write */
         APBDEV_PMC_SCRATCH45_0 = 0x2E38DFFF;
         APBDEV_PMC_SCRATCH46_0 = 0x6001DC28;
@@ -83,6 +120,7 @@ __attribute__((noreturn)) static void reboot_to_payload(void) {
         pmc_reboot(1 << 0);
         while (true) { }
     }
+}
 
 __attribute__((noreturn)) void reboot_to_fusee_primary(void) {
     /* Copy fusee-primary into IRAM low. */
@@ -94,7 +132,10 @@ __attribute__((noreturn)) void reboot_to_fusee_primary(void) {
 }
 
 __attribute__((noreturn)) void reboot_to_sept(const void *tsec_fw, size_t tsec_fw_length, const void *stage2, size_t stage2_size) {
-    
+    if (is_soc_mariko()) {
+        /* Reboot to sept isn't possible on mariko, so just do normal reboot. */
+        shutdown_system(true);
+    } else {
         /* Copy tsec firmware. */
         for (size_t i = 0; i < tsec_fw_length; i += sizeof(uint32_t)) {
             write32le((void *)0x40010F00, i, read32le(tsec_fw, i));
@@ -122,6 +163,7 @@ __attribute__((noreturn)) void reboot_to_sept(const void *tsec_fw, size_t tsec_f
         pmc_reboot(1 << 0);
         while (true) { }
     }
+}
 
 __attribute__((noreturn)) void reboot_to_iram_payload(void *payload, size_t payload_size) {
     /* Copy sept into IRAM low. */