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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.

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Gregory Nutt
2014-04-03 16:08:18 -06:00
parent fa9f3fde29
commit 552b6f44e1
1 changed files with 10 additions and 2 deletions
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configs/sama5d3x-ek/scripts/nor-isram.ld
+10 -2
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@@ -1,7 +1,7 @@
/**************************************************************************** /****************************************************************************
* configs/sama5d3x-ek/scripts/nor-isram.ld * 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> * Author: Gregory Nutt <gnutt@nuttx.org>
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@@ -46,7 +46,7 @@
MEMORY MEMORY
{ {
norflash (W!RX) : ORIGIN = 0x10000000, LENGTH = 128M 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") OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
@@ -111,6 +111,14 @@ SECTIONS
_ebss = ABSOLUTE(.); _ebss = ABSOLUTE(.);
} > isram } > isram
.ramfunc ALIGN(4): {
_sramfuncs = ABSOLUTE(.);
*(.ramfunc .ramfunc.*)
_eramfuncs = ABSOLUTE(.);
} > isram AT > norflash
_framfuncs = LOADADDR(.ramfunc);
/* Stabs debugging sections. */ /* Stabs debugging sections. */
.stab 0 : { *(.stab) } .stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) } .stabstr 0 : { *(.stabstr) }