init.c
来自「mx21 Nor flash Bootloader 源代码」· C语言 代码 · 共 73 行
C
73 行
/// @ingroup AMD_BOOTLOADER/// @file init.c/// @brief Init code before booting.////// @remarks Initialize all peripheral.\n/// Initialize FMCR./// @author /// @bug /// @version $Version$//<<<<<Include#include "../Include/type.h"#include "../Include/mx2.h"//>>>>>Include//<<<<<< Private Macro//<<<<<< Private Structure//>>>>>> Private Macro//<<<<<< Private Structure//>>>>>> Private Structure//<<<<<< Global Variable//>>>>>> Global Variable//<<<<<Private Function Declearation//>>>>>Private Function Declearation//<<<<<Body///Set System to AsynchMode.void SetAsynchMode(void){ __asm__( "mrc p15,0,r0,c1,c0,0\n\t" "mov r2, #0xC0000000\n\t" "orr r0,r2,r0\n\t" "mcr p15,0,r0,c1,c0,0\n\t" );}///Set Fast Bus Modevoid SetFastBusMode(void){ __asm__ ( "mrc p15,0,r0,c1,c0,0\n\t" "mov r2, #0x3FFFFFFF\n\t" "and r0,r2,r0\n\t" "mcr p15,0,r0,c1,c0,0\n\t" ); }///Init MX2 Hardwarevoid init(){ U32 dummy,reg; // burst-flash initialization // Initialize all peripheral in AIPI1 PSR[1:0] => 10=32bit, 01=16bit, 00=8bit _reg_AIPI1_PSR0 = 0x00040304; _reg_AIPI1_PSR1 = 0xFFFBFCFB; // Initialize all peripheral in AIPI1 PSR[1:0] => 10=32bit, 01=16bit, 00=8bit _reg_AIPI2_PSR0 = 0x0; _reg_AIPI2_PSR1 = 0xFFFFFFFF; //write to the FMCR [31:24] (CLKMODE[1:0]) in order to get the write enable signal active *((volatile unsigned long *)SYS_FMCR) |= 0xAA000000; SetAsynchMode();}//>>>>>Body⌨️ 快捷键说明
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