CCS对Am3354进行裸机调试时在使用MMU函数及CACHE函数时跑飞

在初始化这一不就已经跑飞。

/* Setup the MMU and do necessary MMU configurations. */

MMUConfigAndEnable();

/* Enable all levels of CACHE. */

CacheEnable(CACHE_ALL);

void MMUInit(unsigned int *masterPt)

{unsigned int idx;

/* Invalidate the TLB entries */

CP15TlbInvalidate();

/* Set domain access rights */

CP15DomainAccessClientSet();

/* Disable TEX remapping, Access Flag usage and alignment check */

CP15ControlFeatureDisable( CP15_CONTROL_TEXREMAP | CP15_CONTROL_ACCESSFLAG | CP15_CONTROL_ALIGN_CHCK | CP15_CONTROL_MMU); /* Configure the TTB Control register to use only TTB0 */

CP15TtbCtlTtb0Config();

/* Se the master page table with fault entries */

for(idx = MMU_PAGETABLE_NUM_ENTRY; idx !=0; idx--)

{*masterPt++ = MMU_PAGETABLE_ENTRY_FAULT;}

单步调试在蓝字段不断循环后，ccs软件直接未响应了。

在正常模式下则显示Break at address "0x217ee" with no debug information available, or outside of program code.

请问在哪里更改stack，我并没有找到stack相关的数据，请问是否修改.cmd文件，下面是。cmd文件的代码

-stack 0x0008

/* SOFTWARE STACK SIZE */

-heap 0x2000 /* HEAP AREA SIZE */

-e Entry

--diag_suppress=10063

/* SPECIFY THE SYSTEM MEMORY MAP */

MEMORY {

DDR_MEM :

org = 0x80000000

len = 0x7FFFFFF

/* RAM */

}

/* SPECIFY THE SECTIONS ALLOCATION INTO MEMORY */

SECTIONS

{

.text:Entry : load > 0x80000000

.text : load > DDR_MEM /* CODE */

.data : load > DDR_MEM /* INITIALIZED GLOBAL AND STATIC VARIABLES */

.bss : load > DDR_MEM /* UNINITIALIZED OR ZERO INITIALIZED */

/* GLOBAL & STATIC VARIABLES */

RUN_START(bss_start)

RUN_END(bss_end)

.const : load > DDR_MEM /* GLOBAL CONSTANTS */

.stack : load > 0x87FFFFF0 /* SOFTWARE SYSTEM STACK */

你好，.cmd文件中的.stack无法修改，只能调小为0x0004，但程序依然会跑飞。
当.stack调大于0x0008时，编译程序将会报错：
gmake: Target 'all' not remade because of errors.
warning: The ".stack" section size is required to be aligned to 8 bytes, but the specified size, 0x16, is not.
The aligned size is 0x18"../dmtimerCounter.cmd",
line 87: error: program will not fit into available memory, or the section contains a call site that requires a trampoline that can't be generated for this section.
run placement with alignment fails for section ".stack" size 0x18

你好，

经过修改.stack后MMU函数能正常运行了，不过CacheEnable（CACHE_ALL）函数在正常模式下会跑飞。

若是先在CacheEnable（CACHE_ALL）函数前打断，单步运行完CacheEnable（CACHE_ALL），在正常运行，则程序能实现功能。

正常模式下跑飞时迅速暂停则显示在floop3中循环跑飞。

CP15DCacheFlush:

PUSH {r4-r11}

DMB MRC p15, #1, r0, c0, c0, #1 ;

Read CLID register ANDS r3, r0, #0x7000000 ;

Get Level of Coherency MOV r3, r3, lsr #23

BEQ ffinished

MOV r10, #0

floop1:

ADD r2, r10, r10, lsr #1

MOV r1, r0, lsr r2

AND r1, r1, #7

CMP r1, #2

BLT fskip

MCR p15, #2, r10, c0, c0, #0

ISB

MRC p15, #1, r1, c0, c0, #0

AND r2, r1, #7 ADD r2, r2, #4

LDR r4, _FLD_MAX_WAY

ANDS r4, r4, r1, lsr #3

CLZ r5, r4

LDR r7, _FLD_MAX_IDX

ANDS r7, r7, r1, lsr #13

floop2:

MOV r9, r4

floop3:

ORR r11, r10, r9, lsl r5

ORR r11, r11, r7, lsl r2

MCR p15, #0, r11, c7, c6, #2

SUBS r9, r9, #1

BGE floop3

SUBS r7, r7, #1

BGE floop2

fskip:

ADD r10, r10, #2

CMP r3, r10

BGT floop1

ffinished: DSB

ISB

POP {r4-r11}

BX lr