NUC505 程序如何定位到 SRAM？

只看该作者 · 2015-7-14 16:00

/* Code that will impact SPIM DMM is placed in the spimcode section,
which will be located at RAM instead of SPIROM at execution time. */
#if defined ( __CC_ARM )
//#pragma arm section code="spimcode"
//#pragma arm section
void SPIMCode_DelayMicroSec(uint32_t u32Delay) __attribute__((section("spimcode")));
void SPIMCode_SetBusClock(uint32_t u32SysClk, uint32_t u32SClk) __attribute__((section("spimcode")));
uint32_t SPIMCode_GetBusClock(void) __attribute__((section("spimcode")));
void SPIMCode_ConfigDMMMode(uint32_t u32SysClk, uint32_t u32SClk, uint32_t u32RdCmdCode) __attribute__((section("spimcode")));
#elif defined (__ICCARM__)
void SPIMCode_DelayMicroSec(uint32_t u32Delay) @ "spimcode";
void SPIMCode_SetBusClock(uint32_t u32SysClk, uint32_t u32SClk) @ "spimcode";
uint32_t SPIMCode_GetBusClock(void) @ "spimcode";
void SPIMCode_ConfigDMMMode(uint32_t u32SysClk, uint32_t u32SClk, uint32_t u32RdCmdCode) @ "spimcode";
#endif
上述程序怎么理解？芯片起动后 FLASH 拷贝到 RAM 是由哪个程序完成的？

1万 · 2015-7-14 21:01

这不是由程序完成的搬移吧，应该是硬件完成的。

只看该作者 · 2015-7-14 21:07

#if defined ( __CC_ARM )
//#pragma arm section code="spimcode"
//#pragma arm section
这几句预编译实现的吧。

只看该作者 · 2015-7-14 21:07

硬件自己动作的吧，和软件没有关系的

只看该作者 · 2015-7-14 21:08

听了上面大侠的见解，我觉得也应该是硬件实现了搬移，比如总线，一般好像就是总线进行各个模块数据通信的。

只看该作者 · 2015-7-15 09:32

硬件实现不大可能，C 编译器实现在起动代码中实现搬移倒有可能，新唐该出个文档说明下。

只看该作者 · 2015-7-15 10:11

对呀，新唐应该着重讲述一下这方面

只看该作者 · 2015-10-29 17:17

点击链接加入群【Nuvoton NUC505】：http://jq.qq.com/?_wv=1027&k=aBPl1W

只看该作者 · 2015-10-29 21:34

Memory Map of the image

  Image Entry point : 0x00000179

  Load Region LR_ROM (Base: 0x00000000, Size: 0x000015a4, Max: 0x00200000, ABSOLUTE)

Execution Region ER_CODE1_CONSTDATA1 (Base: 0x00000000, Size: 0x00000b80, Max: 0xffffffff, ABSOLUTE)

Base Addr Size       Type Attr    Idx E Section Name       Object

0x00000000 0x000000bc Data RO          4 RESET             startup_nuc505series.o
0x000000bc 0x00000008 Code RO       946  * !!!main          c_w.l(__main.o)
0x000000c4 0x00000034 Code RO       1098 !!!scatter       c_w.l(__scatter.o)
0x000000f8 0x0000001a Code RO       1100 !!handler_copy    c_w.l(__scatter_copy.o)
0x00000112 0x00000002 PAD
0x00000114 0x0000001c Code RO       1102 !!handler_zi       c_w.l(__scatter_zi.o)
0x00000130 0x00000006 Code RO       975 .ARM.Collect$$libinit$$00000000  c_w.l(libinit.o)
0x00000136 0x00000000 Code RO       983 .ARM.Collect$$libinit$$00000006  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       985 .ARM.Collect$$libinit$$00000008  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       987 .ARM.Collect$$libinit$$0000000A  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       990 .ARM.Collect$$libinit$$0000000D  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       992 .ARM.Collect$$libinit$$0000000F  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       994 .ARM.Collect$$libinit$$00000011  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       996 .ARM.Collect$$libinit$$00000013  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       998 .ARM.Collect$$libinit$$00000015  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       1000 .ARM.Collect$$libinit$$00000017  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       1002 .ARM.Collect$$libinit$$00000019  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       1004 .ARM.Collect$$libinit$$0000001B  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       1006 .ARM.Collect$$libinit$$0000001D  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       1008 .ARM.Collect$$libinit$$0000001F  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       1010 .ARM.Collect$$libinit$$00000021  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       1014 .ARM.Collect$$libinit$$00000028  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       1016 .ARM.Collect$$libinit$$0000002A  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       1018 .ARM.Collect$$libinit$$0000002C  c_w.l(libinit2.o)
0x00000136 0x00000000 Code RO       1020 .ARM.Collect$$libinit$$0000002E  c_w.l(libinit2.o)
0x00000136 0x00000002 Code RO       1021 .ARM.Collect$$libinit$$0000002F  c_w.l(libinit2.o)
0x00000138 0x00000002 Code RO       1041 .ARM.Collect$$libshutdown$$00000000  c_w.l(libshutdown.o)
0x0000013a 0x00000000 Code RO       1055 .ARM.Collect$$libshutdown$$00000003  c_w.l(libshutdown2.o)
0x0000013a 0x00000000 Code RO       1058 .ARM.Collect$$libshutdown$$00000006  c_w.l(libshutdown2.o)
0x0000013a 0x00000000 Code RO       1061 .ARM.Collect$$libshutdown$$00000009  c_w.l(libshutdown2.o)
0x0000013a 0x00000000 Code RO       1063 .ARM.Collect$$libshutdown$$0000000B  c_w.l(libshutdown2.o)
0x0000013a 0x00000000 Code RO       1066 .ARM.Collect$$libshutdown$$0000000E  c_w.l(libshutdown2.o)
0x0000013a 0x00000002 Code RO       1067 .ARM.Collect$$libshutdown$$0000000F  c_w.l(libshutdown2.o)
0x0000013c 0x00000000 Code RO       948 .ARM.Collect$$rtentry$$00000000  c_w.l(rtentry.o)
0x0000013c 0x00000000 Code RO       952 .ARM.Collect$$rtentry$$00000002  c_w.l(rtentry2.o)
0x0000013c 0x00000006 Code RO       964 .ARM.Collect$$rtentry$$00000004  c_w.l(rtentry4.o)
0x00000142 0x00000000 Code RO       954 .ARM.Collect$$rtentry$$00000009  c_w.l(rtentry2.o)
0x00000142 0x00000004 Code RO       955 .ARM.Collect$$rtentry$$0000000A  c_w.l(rtentry2.o)
0x00000146 0x00000000 Code RO       957 .ARM.Collect$$rtentry$$0000000C  c_w.l(rtentry2.o)
0x00000146 0x00000008 Code RO       958 .ARM.Collect$$rtentry$$0000000D  c_w.l(rtentry2.o)
0x0000014e 0x00000002 Code RO       979 .ARM.Collect$$rtexit$$00000000  c_w.l(rtexit.o)
0x00000150 0x00000000 Code RO       1025 .ARM.Collect$$rtexit$$00000002  c_w.l(rtexit2.o)
0x00000150 0x00000004 Code RO       1026 .ARM.Collect$$rtexit$$00000003  c_w.l(rtexit2.o)
0x00000154 0x00000006 Code RO       1027 .ARM.Collect$$rtexit$$00000004  c_w.l(rtexit2.o)
0x0000015a 0x00000002 PAD
0x0000015c 0x0000001c Code RO       686 .emb_text          retarget.o
0x00000178 0x00000040 Code RO          5  * .text             startup_nuc505series.o
0x000001b8 0x0000008a Code RO       942 .text             c_w.l(rt_memcpy_v6.o)
0x00000242 0x00000006 Code RO       944 .text             c_w.l(heapauxi.o)
0x00000248 0x00000064 Code RO       949 .text             c_w.l(rt_memcpy_w.o)
0x000002ac 0x0000004a Code RO       966 .text             c_w.l(sys_stackheap_outer.o)
0x000002f6 0x0000000c Code RO       968 .text             c_w.l(exit.o)
0x00000302 0x00000002 PAD
0x00000304 0x00000008 Code RO       976 .text             c_w.l(libspace.o)
0x0000030c 0x0000000c Code RO       1033 .text             c_w.l(sys_exit.o)
0x00000318 0x00000002 Code RO       1044 .text             c_w.l(use_no_semi.o)
0x0000031a 0x00000000 Code RO       1046 .text             c_w.l(indicate_semi.o)
0x0000031a 0x0000000a Ven RO       1104 Veneer$$Code       anon$$obj.o
0x00000324 0x0000001e Code RO       122 i.CLK_EnableModuleClock  clk.o
0x00000342 0x00000002 PAD
0x00000344 0x00000050 Code RO       124 i.CLK_GetAPLLClockFreq  clk.o
0x00000394 0x00000014 Code RO       127 i.CLK_GetHXTFreq clk.o
0x000003a8 0x00000034 Code RO       129 i.CLK_GetPLLClockFreq  clk.o
0x000003dc 0x000000b0 Code RO       132 i.CLK_SetCoreClock  clk.o
0x0000048c 0x00000074 Code RO       134 i.CLK_SetModuleClock  clk.o
0x00000500 0x00000002 Code RO       688 i.Hard_Fault_Handler  retarget.o
0x00000502 0x00000008 Code RO       578 i.I2S_EnableInt    i2s.o
0x0000050a 0x0000004a Code RO       579 i.I2S_EnableMCLK i2s.o
0x00000554 0x0000004c Code RO       580 i.I2S_GetSourceClockFreq  i2s.o
0x000005a0 0x0000006c Code RO       776 i.I2S_Init       main.o
0x0000060c 0x000000c8 Code RO       581 i.I2S_Open       i2s.o
0x000006d4 0x00000018 Code RO       843 i.I2S_SET_INTERNAL_CODEC  codes_audio.o
0x000006ec 0x000000b0 Code RO       137 i.PLL_calculate    clk.o
0x0000079c 0x00000044 Code RO       777 i.SYS_Init       main.o
0x000007e0 0x0000001a Code RO       257 i.SYS_ResetModule sys.o
0x000007fa 0x00000002 PAD
0x000007fc 0x00000048 Code RO          13 i.SystemCoreClockUpdate  system_nuc505series.o
0x00000844 0x00000010 Code RO          14 i.SystemInit       system_nuc505series.o
0x00000854 0x00000090 Code RO       845 i.demo_MIC0       codes_audio.o
0x000008e4 0x00000098 Code RO       779 i.main             main.o
0x0000097c 0x0000000a Code RO       1022 x$fpl$fpinit       fz_wm.l(fpinit.o)
0x00000986 0x00000002 PAD
0x00000988 0x000001c8 Data RO       138 .constdata       clk.o
0x00000b50 0x00000030 Data RO       1096 Region$$Table    anon$$obj.o

Execution Region ER_VECTOR2 (Base: 0x1ff00000, Size: 0x00000400, Max: 0x00000400, ABSOLUTE, UNINIT)

Base Addr Size       Type Attr    Idx E Section Name       Object

0x1ff00000 0x00000400 Zero RW          1 ER_VECTOR2.bss    anon$$obj.o

Execution Region ER_CODE2_CONSTDATA2 (Base: 0x1ff00400, Size: 0x0001e688, Max: 0x0001fc00, ABSOLUTE)

Base Addr Size       Type Attr    Idx E Section Name       Object

0x1ff00400 0x00000678 Code RO       910 .emb_text          audio_irq.o
0x1ff00a78 0x00000050 Code RO       911 i.I2S_IRQHandler audio_irq.o
0x1ff00ac8 0x00000002 Code RO       912 i.SW             audio_irq.o
0x1ff00aca 0x00000002 PAD
0x1ff00acc 0x00000010 Data RW          15 .data             system_nuc505series.o
0x1ff00adc 0x00000348 Data RW       914 .data             audio_irq.o
0x1ff00e24 0x0001daf8 Zero RW       913 .bss             audio_irq.o
0x1ff1e91c 0x00000060 Zero RW       977 .bss             c_w.l(libspace.o)
0x1ff1e97c 0x00000004 PAD
0x1ff1e980 0x00000008 Zero RW          3 HEAP             startup_nuc505series.o
0x1ff1e988 0x00000100 Zero RW          2 STACK             startup_nuc505series.o

以上是我编译后的内存结果方法是编辑scatter.ld文件。

LR_ROM 0x00000000 0x00200000 ; 2MB (SPI Flash)
{
; here is the SPI Flash section (code and const data) that just use once only at startup
ER_CODE1_CONSTDATA1 +0
{
startup_NUC505Series.o(RESET, +First)
startup_NUC505Series.o
system_NUC505Series.o
anon$$obj.o
clk.o
sys.o
i2s.o
rt_memcpy_v6.o
heapauxi.o
rtentry.o
rt_memcpy_w.o
rtentry2.o
rtentry4.o
sys_stackheap_outer.o
exit.o
libspace.o
sys_exit.o
use_no_semi.o
indicate_semi.o
retarget.o
fpinit.o
libinit.o
libinit2.o
libshutdown.o
libshutdown2.o
rtexit.o
rtexit2.o
;i.demo_MIC0
;i.I2S_SET_INTERNAL_CODEC
;i.SYS_Init
;i.I2S_Init
;i.main
codes_audio.o
main.o
__main.o
__scatter*.o
;*(+RO) ; text code and const data
}

; here are the SRAM sections moved at startup for fast accessing.
; Relocate vector table in SRAM for fast interrupt handling.
ER_VECTOR2       0x1FF00000 EMPTY 0x00000400
{
}

ER_CODE2_CONSTDATA2 0x1FF00400    0x0001FC00
{
audio_irq.o

*(+RW, +ZI) ; data and others
}

;ER_DATA_ZI       0x1FF10000    0x00010000
;{
   ;*(+RW, +ZI) ; data and others
;}
}

NUC505 程序如何定位到 SRAM？

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