Attempt to determine host platform power status on initial BMC boot

This avoids a mismatch between BMC internal host state and the
actual physical state of the host if the BMC is rebooted / reloaded
while the host platform is online.

kestrel/src/kestrel.c

@@ -3846,6 +3846,20 @@ int kestrel_init(void)
 #endif
 #endif
 
+    // Ensure internal host power status matches platform status
+    uint8_t byte;
+    int i2c_read_retcode;
+    byte = i2c_read_register_byte((uint8_t *)P9PS_I2C_MASTER_BASE_ADDR, HOST_PLATFORM_FPGA_I2C_ADDRESS, HOST_PLATFORM_FPGA_I2C_REG_STATUS, &i2c_read_retcode);
+    if (i2c_read_retcode || (((byte)&0x03) != 0x03))
+    {
+        host_power_status = HOST_POWER_STATUS_OFFLINE;
+    }
+    else
+    {
+        host_power_status = HOST_POWER_STATUS_RUNNING;
+    }
+    host_power_status_changed();
+
     display_character('2', 0); // STATUS CODE: 2
 
     kestrel_basic_init_complete = 1;