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SAMA5: More variables-in-SDRAM stuff

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This commit is contained in:
Gregory Nutt 2014-01-28 15:05:19 -06:00
parent 34b94de8fe
commit 6188eb7472
3 changed files with 15 additions and 7 deletions
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7
ChangeLog
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@ -6522,5 +6522,10 @@
to fix 'Error: .size expression for idle_stack does not evaluate to
a constant" (2014-1-25).
* arch/arm/include/efm32, arch/arm/src/efm32, and configs/efm32-dk360:
Removed all EFM32 support. Not yet readyto be fielded (2014-1-17).
Removed all EFM32 support. Not yet readyto be fielded (2014-1-27).
* arch/arm/src/armv7-a/arm_head.S, sama5/sam_boot.c, and several other
files: Not supports execution from NOR FLASH with .data and .bss in
SDRAM. This was not possible prior to this because .bss and .data
were initialized before SDRAM was configured. This logic is still
kind buggy. (2014-1-28).

12
arch/arm/src/sama5/sam_boot.c
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@ -1,7 +1,7 @@
/****************************************************************************
* arch/arm/src/sama5/sam_boot.c
*
* 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
@ -627,9 +627,9 @@ void up_boot(void)
sam_clockconfig();
#ifdef CONFIG_ARCH_FPU
/* Initialize the FPU */
#ifdef CONFIG_ARCH_FPU
arm_fpuconfig();
#endif
@ -645,20 +645,20 @@ void up_boot(void)
sam_boardinitialize();
#ifdef NEED_SDRAM_REMAPPING
/* SDRAM was configured in a temporary state to support low-level
* initialization. Now that the SDRAM has been fully initialized,
* we can reconfigure the SDRAM in its final, fully cache-able state.
*/
#ifdef NEED_SDRAM_REMAPPING
sam_remap();
#endif
#ifdef CONFIG_BOOT_SDRAM_DATA
/* If .data and .bss reside in SDRAM, then initialize the data sections
* now after SDRAM has been initialized.
*/
#ifdef CONFIG_BOOT_SDRAM_DATA
arm_data_initialize();
#endif
@ -666,21 +666,21 @@ void up_boot(void)
sam_lowsetup();
#ifdef USE_EARLYSERIALINIT
/* Perform early serial initialization if we are going to use the serial
* driver.
*/
#ifdef USE_EARLYSERIALINIT
sam_earlyserialinit();
#endif
#ifdef CONFIG_NUTTX_KERNEL
/* For the case of the separate user-/kernel-space build, perform whatever
* platform specific initialization of the user memory is required.
* Normally this just means initializing the user space .data and .bss
* segments.
*/
#ifdef CONFIG_NUTTX_KERNEL
sam_userspace();
#endif
}

3
configs/sama5d3x-ek/README.txt
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@ -3120,6 +3120,9 @@ To-Do List
Perhaps there are some issues with SDRAM when uses as the primary
heap?
UPDATE: If I turn memory management debug on, the crash does not
occur. This needs some further investigation and a little TLC.
5) HSCMI TX DMA support is currently commented out.
6) I believe that there is an issue when the internal AT25 FLASH is