carl9170 firmware: introduce __noreturn attribute

[carl9170fw.git] / carlfw / src / main.c

diff --git a/carlfw/src/main.c b/carlfw/src/main.c
index bdb68babd58a79bbf583b3314573256cf6fe3a9f..9500c0d26720bcb4d43f409e790048669788ae01 100644 (file)
--- a/carlfw/src/main.c
+++ b/carlfw/src/main.c
@@ -43,15 +43,15 @@ static void init(void)
        /* 25/50/100ms timer (depends on cpu clock) */
        timer_init(0, 50000);
 
-       /* turn off all leds */
-       led_set(0);
+       /* USB init */
+       usb_init();
+
+       /* initialize DMA memory */
+       memset(&dma_mem, 0, sizeof(dma_mem));
 
        /* fill DMA rings */
        dma_init_descriptors();
 
-       /* USB init */
-       usb_init();
-
        /* clear all interrupt */
        set(AR9170_MAC_REG_INT_CTRL, 0xffff);
 
@@ -76,14 +76,20 @@ static void init(void)
        down_trigger();
 }
 
-static void __attribute__((noreturn)) main_loop(void)
+static void handle_fw(void)
 {
-       clock_set(true, AHB_40MHZ_OSC);
+       if (fw.watchdog_enable == 1)
+               set(AR9170_TIMER_REG_WATCH_DOG, AR9170_WATCH_DOG_TIMER);
+
+       if (fw.reboot)
+               reboot();
+}
 
+static void __noreturn main_loop(void)
+{
        /* main loop */
        while (1) {
-               if (fw.watchdog_enable == 1)
-                       set(AR9170_TIMER_REG_WATCH_DOG, AR9170_WATCH_DOG_TIMER);
+               handle_fw();
 
                /*
                 * Due to frame order persevation, the wlan subroutines
@@ -111,11 +117,9 @@ static void __attribute__((noreturn)) main_loop(void)
  * we put _start() there with the linker script carl9170.lds.
  */
 
-void __attribute__((noreturn)) start(void)
+void start(void)
 {
-       /* initialize firmware context and DMA memory */
-       memset(&fw, 0, sizeof(fw));
-       memset(&dma_mem, 0, sizeof(dma_mem));
+       clock_set(true, AHB_40MHZ_OSC);
 
        /* watchdog magic pattern check */
        if ((get(AR9170_PWR_REG_WATCH_DOG_MAGIC) & 0xffff0000) == 0x12340000) {
@@ -143,5 +147,10 @@ void __attribute__((noreturn)) start(void)
            " ~`!1@2#3$4%%5^6&7*8(9)0_-+={[}]|\\:;\"'<,>.?/");
 #endif /* CONFIG_CARL9170FW_DEBUG */
 
+       /*
+        * Tell the host, that the firmware has booted and is
+        * now ready to process requests.
+        */
+       send_cmd_to_host(0, CARL9170_RSP_BOOT, 0x00, NULL);
        main_loop();
 }