K64F - i2c fix, debug-info sets optimization to

- debug-info for all toolchains set optimization to 0
	- i2c - open drain and clock enabled for i2c pins [K64F]

libraries/mbed/targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/TARGET_K64F/i2c_api.c

@@ -20,6 +20,8 @@
 #include "error.h"
 #include "fsl_clock_manager.h"
 #include "fsl_i2c_hal.h"
+#include "fsl_port_hal.h"
+#include "fsl_sim_hal.h"
 
 static const PinMap PinMap_I2C_SDA[] = {
     {PTE25, I2C_0, 5},
@@ -53,11 +55,15 @@ void i2c_init(i2c_t *obj, PinName sda, PinName scl) {
     }
 
     clock_manager_set_gate(kClockModuleI2C, obj->instance, true);
+    clock_manager_set_gate(kClockModulePORT, sda >> GPIO_PORT_SHIFT, true);
+    clock_manager_set_gate(kClockModulePORT, scl >> GPIO_PORT_SHIFT, true);
     i2c_hal_enable(obj->instance);
     i2c_frequency(obj, 100000);
 
     pinmap_pinout(sda, PinMap_I2C_SDA);
     pinmap_pinout(scl, PinMap_I2C_SCL);
+    port_hal_configure_open_drain(sda >> GPIO_PORT_SHIFT, sda & 0xFF, true);
+    port_hal_configure_open_drain(scl >> GPIO_PORT_SHIFT, scl & 0xFF, true);
 }
 
 int i2c_start(i2c_t *obj) {

workspace_tools/toolchains/arm.py

@@ -43,7 +43,7 @@ class ARM(mbedToolchain):
         main_cc = join(ARM_BIN, "armcc")
         common = ["-c",
             "--cpu=%s" % cpu, "--gnu",
-            "-O3", "-Otime", "--split_sections", "--apcs=interwork",
+            "-Otime", "--split_sections", "--apcs=interwork",
             "--brief_diagnostics", "--restrict"
         ]
         
@@ -52,7 +52,10 @@ class ARM(mbedToolchain):
 
         if "debug-info" in self.options:
             common.append("-g")
-        
+            common.append("-O0")
+        else:
+            common.append("-O3")
+            
         common_c = [
             "--md", "--no_depend_system_headers",
             '-I%s' % ARM_INC
@@ -64,7 +67,7 @@ class ARM(mbedToolchain):
             self.cppc = [main_cc] + common + common_c + ["--cpp", "--no_rtti"]
         else:
             self.cc  = [join(GOANNA_PATH, "goannacc"), "--with-cc=" + main_cc.replace('\\', '/'), "--dialect=armcc", '--output-format="%s"' % self.GOANNA_FORMAT] + common + common_c + ["--c99"]
-            self.cppc= [join(GOANNA_PATH, "goannac++"), "--with-cxx=" + main_cc.replace('\\', '/'), "--dialect=armcc", '--output-format="%s"' % self.GOANNA_FORMAT] + common + common_c + ["--cpp", "--no_rtti"] 
+            self.cppc= [join(GOANNA_PATH, "goannac++"), "--with-cxx=" + main_cc.replace('\\', '/'), "--dialect=armcc", '--output-format="%s"' % self.GOANNA_FORMAT] + common + common_c + ["--cpp", "--no_rtti"]
         
         self.ld = [join(ARM_BIN, "armlink")]
         self.sys_libs = []

workspace_tools/toolchains/gcc.py

@@ -49,7 +49,7 @@ class GCC(mbedToolchain):
         
         # Note: We are using "-O2" instead of "-Os" to avoid this known GCC bug:
         # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46762
-        common_flags = ["-c", "-O2", "-Wall", "-Wextra",
+        common_flags = ["-c", "-Wall", "-Wextra",
             "-Wno-unused-parameter", "-Wno-missing-field-initializers",
             "-fmessage-length=0", "-fno-exceptions", "-fno-builtin",
             "-ffunction-sections", "-fdata-sections",
@@ -61,6 +61,9 @@ class GCC(mbedToolchain):
 
         if "debug-info" in self.options:
             common_flags.append("-g")
+            common_flags.append("-O0")
+        else:
+            common_flags.append("-O2")
 
         main_cc = join(tool_path, "arm-none-eabi-gcc")
         main_cppc = join(tool_path, "arm-none-eabi-g++")
@@ -151,7 +154,7 @@ class GCC(mbedToolchain):
         # NOTE: There is a circular dependency between the mbed library and the clib
         # We could define a set of week symbols to satisfy the clib dependencies in "sys.o",
         # but if an application uses only clib symbols and not mbed symbols, then the final
-        # image is not correctly retargeted 
+        # image is not correctly retargeted
         if self.CIRCULAR_DEPENDENCIES:
             libs.extend(libs)
         

workspace_tools/toolchains/iar.py

@@ -33,7 +33,6 @@ class IAR(mbedToolchain):
         mbedToolchain.__init__(self, target, options, notify, macros)
         
         c_flags = [
-            "-Oh",
             "--cpu=%s" % target.core, "--thumb",
             "--dlib_config", join(IAR_PATH, "inc", "c", "DLib_Config_Full.h"),
             "-e", # Enable IAR language extension
@@ -47,6 +46,9 @@ class IAR(mbedToolchain):
 
         if "debug-info" in self.options:
             c_flags.append("-r")
+            c_flags.append("-On")
+        else:
+            c_flags.append("-Oh")
         
         IAR_BIN = join(IAR_PATH, "bin")
         main_cc = join(IAR_BIN, "iccarm")