diff options
| author | onelife.real <[email protected]> | 2011-11-29 09:15:10 +0000 |
|---|---|---|
| committer | onelife.real <[email protected]> | 2011-11-29 09:15:10 +0000 |
| commit | ed9828226a41216626b2dcea09d80067d1cebcd3 (patch) | |
| tree | 8f786a6e421db975af2d30c5997b9039c200c9ee /libcpu | |
| parent | 1b3411abdec28b1f9eb3faf9a1fadb7b3501625b (diff) | |
*** EFM32 branch ***
1. Move file, "start_gcc.S", from "libcpu/arm/cortex-m3/" to "bsp/efm32/"
2. Upgrade EFM32 driver libraries (CMSIS and efm32lib) to version 2.2.2
3. Upgrade EFM32 G2xx development kit drivers (EFM32_Gxxx_DK) to version 1.7.2 (from version 1.6.0)
4. Modify the files ("drv_usart.c" and "drv_iic.c") according to the driver libraries upgrading
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1818 bbd45198-f89e-11dd-88c7-29a3b14d5316
Diffstat (limited to 'libcpu')
| -rw-r--r-- | libcpu/arm/cortex-m3/start_gcc.S | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/libcpu/arm/cortex-m3/start_gcc.S b/libcpu/arm/cortex-m3/start_gcc.S deleted file mode 100644 index 7d3ec26aee..0000000000 --- a/libcpu/arm/cortex-m3/start_gcc.S +++ /dev/null @@ -1,88 +0,0 @@ -/***************************************************************************//**
- * @file start_gcc.S
- * @brief Context switch functions
- * COPYRIGHT (C) 2011, RT-Thread Development Team
- * @author onelife
- * @version 0.4 beta
- *******************************************************************************
- * @section License
- * The license and distribution terms for this file may be found in the file
- * LICENSE in this distribution or at http://www.rt-thread.org/license/LICENSE
- *******************************************************************************
- * @section Change Logs
- * Date Author Notes
- * 2010-12-21 onelife Initial creation for EFM32
- * 2011-07-06 onelife Modify to make use the start code in libraries
- ******************************************************************************/
-
-/***************************************************************************//**
-* @addtogroup cortex-m3
-* @{
-*******************************************************************************/
- .syntax unified
- .cpu cortex-m3
- .fpu softvfp
- .thumb
-
-/* start address for the initialization values of the .data section.
-defined in linker script */
- .word _sidata
-/* start address for the .data section. defined in linker script */
- .word _sdata
-/* end address for the .data section. defined in linker script */
- .word _edata
-/* start address for the .bss section. defined in linker script */
- .word _sbss
-/* end address for the .bss section. defined in linker script */
- .word _ebss
-
-/***************************************************************************//**
- * @brief This is the code that gets called when the processor first
- * starts execution following a reset event. Only the absolutely
- * necessary set is performed, after which the application
- * supplied main() routine is called.
- * @param None
- * @retval None
-*******************************************************************************/
- .thumb
- .thumb_func
- .section .cs3.init,"ax", %progbits
- .globl _start
- .type _start, %function
-_start:
- /* Copy the data segment initializers from flash to SRAM */
- movs r1, #0
- b LoopCopyDataInit
-
-CopyDataInit:
- ldr r3, =_sidata
- ldr r3, [r3, r1]
- str r3, [r0, r1]
- adds r1, r1, #4
-
-LoopCopyDataInit:
- ldr r0, =_sdata
- ldr r3, =_edata
- adds r2, r0, r1
- cmp r2, r3
- bcc CopyDataInit
- ldr r2, =_sbss
- b LoopFillZerobss
-
-/* Zero fill the bss segment. */
-FillZerobss:
- movs r3, #0
- str r3, [r2], #4
-
-LoopFillZerobss:
- ldr r3, = _ebss
- cmp r2, r3
- bcc FillZerobss
- /* Call the application's entry point.*/
- bl main
- bx lr
- .size _start, .-_start
-
-/***************************************************************************//**
- * @}
-*******************************************************************************/
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