jplzl 发表于 2014-5-16 13:27 ![]()
你说的在0x32000000下不能仿真是什么情况，应该是别的地方没有相应的改过来吧
下载之后能否看到PC停在起始 ...
这是按照第二种设置时的情况，0x30000000处的代码根本不对，下面是离散文件
LR_ROM1 0x30000000 0x01000000 { ; load region size_region
ER_ROM1 0x30000000 0x01000000 { ; load address = execution address
*.o (RESET, +First)
*(InRoot$$Sections)
.ANY (+RO)
}
RW_RAM1 0x32000000 0x01000000 { ; RW data
.ANY (+RW +ZI)
}
RW_IRAM1 0x40000000 0x00010000 {
.ANY (+RW +ZI)
}
}
下面是debug是的脚本文件
FUNC void SetupForStart (void) {
// <o> Program Entry Point
PC = 0x30000000;
}
FUNC void Init (void) {
_WDWORD(0x4A000008, 0xFFFFFFFF); // Disable All Interrupts
_WDWORD(0x53000000, 0x00000000); // Disable Watchdog Timer
// Clock Setup
// FCLK = 300 MHz, HCLK = 100 MHz, PCLK = 50 MHz
_WDWORD(0x4C000000, 0x0FFF0FFF); // LOCKTIME
_WDWORD(0x4C000014, 0x0000000F); // CLKDIVN
_WDWORD(0x4C000004, 0x00043011); // MPLLCON
_WDWORD(0x4C000008, 0x00038021); // UPLLCON
_WDWORD(0x4C00000C, 0x001FFFF0); // CLKCON
// Memory Controller Setup for SDRAM
_WDWORD(0x48000000, 0x22000000); // BWSCON
_WDWORD(0x4800001C, 0x00018005); // BANKCON6
_WDWORD(0x48000020, 0x00018005); // BANKCON7
_WDWORD(0x48000024, 0x008404F3); // REFRESH
_WDWORD(0x48000028, 0x00000032); // BANKSIZE
_WDWORD(0x4800002C, 0x00000020); // MRSRB6
_WDWORD(0x48000030, 0x00000020); // MRSRB7
_WDWORD(0x56000000, 0x000003FF); // GPACON: Enable Address lines for SDRAM
}
// Reset chip with watchdog, because nRST line is routed on hardware in a way
// that it can not be pulled low with ULINK
_WDWORD(0x40000000, 0xEAFFFFFE); // Load RAM addr 0 with branch to itself
CPSR = 0x000000D3; // Disable interrupts
PC = 0x40000000; // Position PC to start of RAM
_WDWORD(0x53000000, 0x00000021); // Enable Watchdog
g, 0 // Wait for Watchdog to reset chip
Init(); // Initialize memory
LOAD 2440.axf INCREMENTAL // Download program
SetupForStart(); // Setup for Running
g, main // Goto Main
对了，MDK可以调试2440的启动代码吗？
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