TMS320F28335如何实现软复位？

问题完美解决，附代码：extern void ExitXboot(Uint32 entry)
跟踪代码发现ExitXboot函数返回之前，CPU寄存器已经恢复到复位状态，之前跳转以后运行不正常的用户代码也工作正常了。那么现在的问题是：我现在的bootloader 位于FLASHA，只能更新FLASHA之外的用户代码，如何更新位于FLASHA的bootloader自身呢？也就是说，如何把所有的bootloader内容从FLASHA加载到RAM运行？RAM空间是足够的，代码可以通过不同的load地址和run地址，初始化的时候MemCopy到RAM来实现。代码常量如.econst段该如何处理呢？

;;###########################################################################
;;
;; FILE: ExitXboot.asm
;;
;; TITLE: 2833x Boot Rom Exit routines.
;;
;; Functions:
;;
;; _ExitXboot
;;
;; Notes:
;;
;;###########################################################################

.def _ExitXboot
.global __stack

;-----------------------------------------------
; _ExitBoot
;-----------------------------------------------
;-----------------------------------------------
;This module cleans up after the boot loader
;
; 1) Make sure the stack is deallocated.
; SP = 0x400 after exiting the boot
; loader
; 2) Push 0 onto the stack so RPC will be
; 0 after using LRETR to jump to the
; entry point
; 2) Load RPC with the entry point
; 3) Clear all XARn registers
; 4) Clear ACC, P and XT registers
; 5) LRETR - this will also clear the RPC
; register since 0 was on the stack
;-----------------------------------------------

_ExitXboot:

;-----------------------------------------------
; Insure that the stack is deallocated
;-----------------------------------------------

MOV SP,#__stack

;-----------------------------------------------
; Clear the bottom of the stack. This will endup
; in RPC when we are finished
;-----------------------------------------------

MOV *SP++,#0
MOV *SP++,#0

;-----------------------------------------------
; Load RPC with the entry point as determined
; by the boot mode. This address will be returned
; in the ACC register.
;-----------------------------------------------

PUSH ACC
POP RPC

;-----------------------------------------------
; Put registers back in their reset state.
;
; Clear all the XARn, ACC, XT, and P and DP
; registers
;
; NOTE: Leave the device in C28x operating mode
; (OBJMODE = 1, AMODE = 0)
;-----------------------------------------------
ZAPA
MOVL XT,ACC
MOVZ AR0,AL
MOVZ AR1,AL
MOVZ AR2,AL
MOVZ AR3,AL
MOVZ AR4,AL
MOVZ AR5,AL
MOVZ AR6,AL
MOVZ AR7,AL
MOVW DP, #0

;------------------------------------------------
; Restore ST0 and ST1. Note OBJMODE is
; the only bit not restored to its reset state.
; OBJMODE is left set for C28x object operating
; mode.
;
; ST0 = 0x0000 ST1 = 0x0A0B
; 15:10 OVC = 0 15:13 ARP = 0
; 9: 7 PM = 0 12 XF = 0
; 6 V = 0 11 M0M1MAP = 1
; 5 N = 0 10 reserved
; 4 Z = 0 9 OBJMODE = 1
; 3 C = 0 8 AMODE = 0
; 2 TC = 0 7 IDLESTAT = 0
; 1 OVM = 0 6 EALLOW = 0
; 0 SXM = 0 5 LOOP = 0
; 4 SPA = 0
; 3 VMAP = 1
; 2 PAGE0 = 0
; 1 DBGM = 1
; 0 INTM = 1
;-----------------------------------------------

MOV *SP++,#0
MOV *SP++,#0x0A0B
POP ST1
POP ST0

;------------------------------------------------
; Jump to the EntryAddr as defined by the
; boot mode selected and continue execution
;-----------------------------------------------

LRETR

;eof ----------