From 552b6f44e14ffc5dfb7f796f85a01db552616f3f Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Thu, 3 Apr 2014 16:08:18 -0600
Subject: [PATCH] SAMA5: On some hardware, reconfiguring the PLL while
executing out of NOR FLASH causes crashes. This was fixed by David Sidrane
by implementing RAM functions. The killer code is copied and executed from
ISRAM and the crash is avoided.
---
configs/sama5d3x-ek/scripts/nor-isram.ld | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/configs/sama5d3x-ek/scripts/nor-isram.ld b/configs/sama5d3x-ek/scripts/nor-isram.ld
index ef6c05e7f4..c8681562e2 100644
--- a/configs/sama5d3x-ek/scripts/nor-isram.ld
+++ b/configs/sama5d3x-ek/scripts/nor-isram.ld
@@ -1,7 +1,7 @@
/****************************************************************************
* configs/sama5d3x-ek/scripts/nor-isram.ld
*
- * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@@ -46,7 +46,7 @@
MEMORY
{
norflash (W!RX) : ORIGIN = 0x10000000, LENGTH = 128M
- isram (WR) : ORIGIN = 0x00304000, LENGTH = 128K - 16K
+ isram (WRX) : ORIGIN = 0x00304000, LENGTH = 128K - 16K
}
OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
@@ -111,6 +111,14 @@ SECTIONS
_ebss = ABSOLUTE(.);
} > isram
+ .ramfunc ALIGN(4): {
+ _sramfuncs = ABSOLUTE(.);
+ *(.ramfunc .ramfunc.*)
+ _eramfuncs = ABSOLUTE(.);
+ } > isram AT > norflash
+
+ _framfuncs = LOADADDR(.ramfunc);
+
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }