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This fix allows to run NuttX from SRAM or to place it after bootloader when run from Flash. From Pavel Pisa

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Pavel Pisa
2015-08-20 07:46:18 -06:00
committed by Gregory Nutt
parent 5196a4183c
commit 387f76d455
1 changed files with 17 additions and 4 deletions
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arch/arm/src/lpc17xx/lpc17_irq.c
+17 -4
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@@ -1,7 +1,7 @@
/****************************************************************************
* arch/arm/src/lpc17/lpc17_irq.c
*
* Copyright (C) 2010-2011, 2013-2014 Gregory Nutt. All rights reserved.
* Copyright (C) 2010-2011, 2013-2015 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@@ -78,9 +78,9 @@
volatile uint32_t *current_regs;
/****************************************************************************
* Private Data
****************************************************************************/
/* This is the address of the vector table */
extern unsigned _vectors[];
/****************************************************************************
* Private Functions
@@ -313,8 +313,21 @@ void up_irqinitialize(void)
putreg32(0, regaddr);
}
/* Make sure that we are using the correct vector table. The default
* vector address is 0x0000:0000 but if we are executing code that is
* positioned in SRAM or in external FLASH, then we may need to reset
* the interrupt vector so that it refers to the table in SRAM or in
* external FLASH.
*/
putreg32((uint32_t)_vectors & ~3, NVIC_VECTAB);
/* If CONFIG_ARCH_RAMVECTORS is defined, then we are using a RAM-based
* vector table that requires special initialization.
*
* But even in this case NVIC_VECTAB has to point to the initial table
* because up_ramvec_initialize() initializes RAM table from table
* pointed by NVIC_VECTAB register.
*/
#ifdef CONFIG_ARCH_RAMVECTORS