From 26cbc91373cdfff43317da01e102617ed5885655 Mon Sep 17 00:00:00 2001
From: danicampora
Date: Mon, 2 Mar 2015 14:11:02 +0100
Subject: cc3200: Place functions only used while booting in a special section.

Such functions are never used after MicroPython has started, and they
remain in RAM wasting space. Now they are placed in a special section
named "boot" which sits just before the heap, allowing us to extend
the effective heap area up to the new boot section. Right now, this
gives us back ~1K, but in the future, more functions might end up in
there as well.
---
 cc3200/mods/pybrtc.c | 1 +
 cc3200/mods/pybsd.c  | 1 +
 2 files changed, 2 insertions(+)

(limited to 'cc3200/mods')

diff --git a/cc3200/mods/pybrtc.c b/cc3200/mods/pybrtc.c
index 5d6c2a7ca..1844a6d7f 100644
--- a/cc3200/mods/pybrtc.c
+++ b/cc3200/mods/pybrtc.c
@@ -51,6 +51,7 @@
 ///     rtc.datetime((2014, 5, 1, 4, 13, 0, 0, 0))
 ///     print(rtc.datetime())
 
+__attribute__ ((section (".boot")))
 void pybrtc_init(void) {
     // if RTC was previously set leave it alone
     if (MAP_PRCMSysResetCauseGet() == PRCM_POWER_ON) {
diff --git a/cc3200/mods/pybsd.c b/cc3200/mods/pybsd.c
index 4ae877250..6d326ded5 100644
--- a/cc3200/mods/pybsd.c
+++ b/cc3200/mods/pybsd.c
@@ -79,6 +79,7 @@ STATIC mp_obj_t pybsd_enable (mp_obj_t self_in);
 /******************************************************************************
  DECLARE PUBLIC FUNCTIONS
  ******************************************************************************/
+__attribute__ ((section (".boot")))
 void pybsd_init0 (void) {
     // allocate memory for the sd file system
     ASSERT ((pybsd_obj.fatfs = mem_Malloc(sizeof(FATFS))) != NULL);
-- 
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