f1c100s单片机在bootloader程序里如何把APP的bin文件拷贝到内存0x80000000处运行，应该怎么操作？
其中，app的bin文件，在link.ld里已将地址设置为0x80000000。
最近编辑记录 duckduckgo (2019-06-20 19:04:44)
离线
1.上电初始化 spi 控制器,
2. 初始化ddr，
3. 把代码从flash拷贝到ddr上
4 .跳转运行。
AREA WB_INIT, CODE, READONLY
USR_MODE EQU 0x10
FIQ_MODE EQU 0x11
IRQ_MODE EQU 0x12
SVC_MODE EQU 0x13
ABT_MODE EQU 0x17
UDF_MODE EQU 0x1B
SYS_MODE EQU 0x1F
I_BIT EQU 0x80
F_BIT EQU 0x40
IRQ_RAMStack EQU 0x81FA0000
DRAM_Limit EQU 0x81F00000 ;DDR栈顶
RAM_Limit EQU 0x4000 ;内存大小 32k
UND_Stack EQU RAM_Limit - 128
Abort_Stack EQU RAM_Limit - 256
IRQ_Stack EQU RAM_Limit - 512
FIQ_Stack EQU RAM_Limit - 768
SVC_Stack EQU RAM_Limit - 1024
USR_Stack EQU RAM_Limit - 2048
ENTRY
; EXPORT Reset_Go
; EXPORT Vector_Table
IMPORT ||Load$$ER_IROM1$$Length||
IMPORT ||Image$$RW_RAM1$$RW$$Length||
; 链接器产生代码链接运行位置
_start
; /* Boot head information for BROM */
DCD 0xea000016
DCB 'e', 'G', 'O', 'N', '.', 'B', 'T', '0'
DCD 0, ||Load$$ER_IROM1$$Length||
; DCD 0, __bootloader_size
DCB 'S', 'P', 'L', 2
DCD 0, 0
DCD 0, 0, 0, 0, 0, 0, 0, 0
DCD 0, 0, 0, 0, 0, 0, 0, 0 ;/* 0x40 - boot params, 0x58 - fel boot type, 0x5c - dram size */
Vector_Table
B Reset_Go
LDR PC, Undefined_Addr
LDR PC, SWI_Addr
LDR PC, Prefetch_Addr
LDR PC, Abort_Addr
DCD 0x0
LDR PC, IRQ_Addr
LDR PC, FIQ_Addr
Reset_Addr DCD Reset_Go
Undefined_Addr DCD Undefined_Handler
SWI_Addr DCD SWI_Handler1
Prefetch_Addr DCD Prefetch_Handler
Abort_Addr DCD Abort_Handler
DCD 0
IRQ_Addr DCD IRQ_Handler
FIQ_Addr DCD FIQ_Handler
Undefined_Handler
B Undefined_Handler
SWI_Handler1
B SWI_Handler1
Prefetch_Handler
B Prefetch_Handler
Abort_Handler
B Abort_Handler
IMPORT arm32_do_irq
PRESERVE8
IRQ_Handler
ldr sp,=IRQ_RAMStack
sub sp, sp, #72
stmia sp, {r0 - r12}
add r8, sp, #60
stmdb r8, {sp, lr}^
str lr, [r8, #0]
mrs r6, spsr
str r6, [r8, #4]
str r0, [r8, #8]
mov r0, sp
bl arm32_do_irq
ldmia sp, {r0 - lr}^
mov r0, r0
ldr lr, [sp, #60]
add sp, sp, #72
subs pc, lr, #4
FIQ_Handler
B FIQ_Handler
EXPORT __CodeAddr__
; 引入链接器产生符号，以确定代码运行位置，编译生成的大小
IMPORT ||Load$$ER_IROM1$$Base||
IMPORT ||Load$$RW_RAM1$$RW$$Length||
IMPORT ||Load$$ER_IROM2$$Length||
; IMPORT ||Image$$ER_IROM2$$Length||
; 链接器产生代码链接运行位置
__CodeAddr__ DCD ||Load$$ER_IROM1$$Base||
__CodeSize__ DCD ||Load$$ER_IROM1$$Length|| + ||Load$$ER_IROM2$$Length|| + ||Load$$RW_RAM1$$RW$$Length||
Reset_Go
;/* Save boot params to 0x00000040 */
ldr r0, =0x01c20890
ldr r1, = 0x11111111
str r1,[r0]
ldr r0, =0x01c20894
ldr r1, = 0x11111111
str r1,[r0]
;ldr r0, =0x01c208a0
;ldr r1, = 0xffffffff
;str r1,[r0]
ldr r0, =0x00000040
str sp, [r0, #0]
str lr, [r0, #4]
mrs lr, cpsr
str lr, [r0, #8]
mrc p15, 0, lr, c1, c0, 0
str lr, [r0, #12]
mrc p15, 0, lr, c1, c0, 0
str lr, [r0, #16]
; /* Check boot type just for fel */
mov r0, #0x0
ldr r1, [r0, #8]
ldr r2, =0x4c45462e
cmp r1, r2
bne lab1
; ldr r1, =0x1
; str r1, [r0, #0x58]
lab1 nop
; /* Enter svc mode and mask interrupts */
mrs r0, cpsr
bic r0, r0, #0x1f
orr r0, r0, #0xd3
msr CPSR_cxsf, r0
; /* Set vector to the low address */
mrc p15, 0, r0, c1, c0, 0
bic r0, #(1<<13)
mcr p15, 0, r0, c1, c0, 0
; /* Copy vector to the correct address */
adr r0, Vector_Table
mrc p15, 0, r2, c1, c0, 0
ands r2, r2, #(1 << 13)
ldreq r1, =0x00000000
ldrne r1, =0xffff0000
; mcr p15, 0, r2, c1, c0, 0
ldmia r0!, {r2-r8, r10}
stmia r1!, {r2-r8, r10}
ldmia r0!, {r2-r8, r10}
stmia r1!, {r2-r8, r10}
IMPORT sys_clock_init
IMPORT sys_dram_init
IMPORT sys_spi_flash_init
IMPORT sys_spi_flash_read
IMPORT sys_spi_flash_exit
IMPORT memcpy
IMPORT memset
IMPORT MMU_Init
PRESERVE8
; /* Boot speed up, leave slower sram */
adr r0, _start
ldr r1, =_start
cmp r0, r1
beq _speedup
bl sys_dram_init
bl sys_clock_init
bl sys_spi_flash_init
bl MMU_Init
ldr r0,=0x00
ldr r1,__CodeAddr__
ldr r2,__CodeSize__
bl sys_spi_flash_read
; bl sys_spi_flash_exit
_speedup
nop
MSR CPSR_c, #UDF_MODE :OR: I_BIT :OR: F_BIT
LDR SP, =UND_Stack + DRAM_Limit
MSR CPSR_c, #ABT_MODE :OR: I_BIT :OR: F_BIT
LDR SP, =Abort_Stack + DRAM_Limit
MSR CPSR_c, #IRQ_MODE :OR: I_BIT :OR: F_BIT
LDR SP, =IRQ_Stack + DRAM_Limit
MSR CPSR_c, #FIQ_MODE :OR: I_BIT :OR: F_BIT
LDR SP, =FIQ_Stack + DRAM_Limit
MSR CPSR_c, #SYS_MODE :OR: I_BIT :OR: F_BIT
LDR SP, =USR_Stack + DRAM_Limit
MSR CPSR_c, #SVC_MODE :OR: I_BIT :OR: F_BIT
LDR SP, =SVC_Stack + DRAM_Limit
MRS r1, CPSR
; BIC r1, #0x1f
; ORR r1, #0x7f;进入IRQ模式
AND r1, #0x7f;允许IRQ中断
MSR CPSR_c,r1
; MRC p15, 0, r0 , c1, c0 ; r0 := cp15 register 1
; BIC r0, r0, #0x2000 ; Clear bit13 in r1
; MCR p15, 0, r0 , c1, c0 ; cp15 register 1 := r0
IMPORT __main
adr r0, _start
ldr r1, =_start
cmp r0, r1
bne _NoDdr
bl sys_clock_init
bl sys_spi_flash_init
bl MMU_Init
_NoDdr
LDR R0, =__main
BX R0
; B __main
end离线
学习了
离线