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/* bootldr.c */
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/*--------------------------------------------------------------------
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* TITLE: Plasma Bootloader
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* AUTHOR: Steve Rhoads (rhoadss@yahoo.com)
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* DATE CREATED: 12/17/05
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* FILENAME: bootldr.c
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* PROJECT: Plasma CPU core
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* COPYRIGHT: Software placed into the public domain by the author.
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* Software 'as is' without warranty. Author liable for nothing.
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* DESCRIPTION:
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* Plasma bootloader.
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*--------------------------------------------------------------------*/
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#include "plasma.h"
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#include "plasma.h"
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#define MemoryRead(A) (*(volatile unsigned long*)(A))
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#define MemoryRead(A) (*(volatile unsigned long*)(A))
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#define MemoryWrite(A,V) *(volatile unsigned long*)(A)=(V)
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#define MemoryWrite(A,V) *(volatile unsigned long*)(A)=(V)
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extern int getch(void);
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extern int getch(void);
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extern int kbhit(void);
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extern int kbhit(void);
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extern int DdrInit(void);
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extern int DdrInit(void);
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typedef void (*FuncPtr)(void);
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typedef void (*FuncPtr)(void);
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typedef unsigned long uint32;
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typedef unsigned short uint16;
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void FlashRead(uint16 *dst, uint32 byteOffset, int bytes)
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{
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volatile uint32 *ptr=(uint32*)(FLASH_BASE + (byteOffset << 1));
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*ptr = 0xff; //read mode
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while(bytes > 0)
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{
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*dst++ = (uint16)*ptr++;
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bytes -= 2;
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}
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}
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void FlashWrite(uint16 *src, uint32 byteOffset, int bytes)
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{
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volatile uint32 *ptr=(uint32*)(FLASH_BASE + (byteOffset << 1));
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while(bytes > 0)
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{
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*ptr = 0x40; //write mode
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*ptr++ = *src++; //write data
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while((*ptr & 0x80) == 0) //check status
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;
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bytes -= 2;
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}
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}
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void FlashErase(uint32 byteOffset)
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{
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volatile uint32 *ptr=(uint32*)(FLASH_BASE + (byteOffset << 1));
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*ptr = 0x20; //erase block
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*ptr = 0xd0; //confirm
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while((*ptr & 0x80) == 0) //check status
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;
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}
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char *xtoa(unsigned long num)
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char *xtoa(unsigned long num)
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{
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{
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static char buf[12];
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static char buf[12];
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int i, digit;
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int i, digit;
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num >>= 4;
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num >>= 4;
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}
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}
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return buf;
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return buf;
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}
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}
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unsigned long getnum(void)
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unsigned long getnum(void)
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{
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{
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int i;
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int i;
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unsigned long ch, ch2, value=0;
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unsigned long ch, ch2, value=0;
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for(i = 0; i < 16; )
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for(i = 0; i < 16; )
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putchar('\r');
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putchar('\r');
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putchar('\n');
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putchar('\n');
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return value;
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return value;
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}
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}
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int main(void)
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int main(void)
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{
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{
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int i, j, ch;
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int i, j, ch;
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unsigned long address, value, count;
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unsigned long address, value, count;
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FuncPtr funcPtr;
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FuncPtr funcPtr;
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puts("\nGreetings from the bootloader ");
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puts("\nGreetings from the bootloader ");
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puts(__DATE__);
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puts(__DATE__);
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puts(" ");
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puts(" ");
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puts(__TIME__);
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puts(__TIME__);
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puts(":\n");
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puts(":\n");
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MemoryWrite(FLASH_BASE, 0xff); //read mode
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if((MemoryRead(GPIOA_IN) & 1) && (MemoryRead(FLASH_BASE) & 0xffff) == 0x3c1c)
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{
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puts("Boot from flash\n");
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FlashRead((uint16*)RAM_EXTERNAL_BASE, 0, 1024*128);
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funcPtr = (FuncPtr)RAM_EXTERNAL_BASE;
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funcPtr();
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}
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for(;;)
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for(;;)
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{
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{
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puts("\nWaiting for binary image linked at 0x10000000\n");
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puts("\nWaiting for binary image linked at 0x10000000\n");
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puts("Other Menu Options:\n");
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puts("Other Menu Options:\n");
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puts("1. Memory read word\n");
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puts("1. Memory read word\n");
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puts("5. Jump to address\n");
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puts("5. Jump to address\n");
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puts("6. Raw memory read\n");
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puts("6. Raw memory read\n");
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puts("7. Raw memory write\n");
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puts("7. Raw memory write\n");
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puts("8. Checksum\n");
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puts("8. Checksum\n");
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puts("9. Dump\n");
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puts("9. Dump\n");
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puts("F. Copy 128KB from DDR to flash\n");
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puts("> ");
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puts("> ");
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ch = getch();
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ch = getch();
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address = 0;
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address = 0;
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if('0' <= ch && ch <= '9')
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if('0' <= ch && ch <= '9')
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{
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{
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funcPtr();
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funcPtr();
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break;
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break;
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case '6':
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case '6':
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puts("\nCount in hex> ");
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puts("\nCount in hex> ");
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count = getnum();
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count = getnum();
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//puts(xtoa(count));
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//puts("\n");
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for(i = 0; i < count; ++i)
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for(i = 0; i < count; ++i)
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{
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{
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ch = *(unsigned char*)(address + i);
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ch = *(unsigned char*)(address + i);
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putchar(ch);
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putchar(ch);
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}
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}
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break;
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break;
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case '7':
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case '7':
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puts("\nCount in hex> ");
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puts("\nCount in hex> ");
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count = getnum();
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count = getnum();
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//puts(xtoa(count));
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//putchar('\n');
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for(i = 0; i < count; ++i)
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for(i = 0; i < count; ++i)
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{
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{
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ch = getch();
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ch = getch();
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*(unsigned char*)(address+i) = ch;
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*(unsigned char*)(address+i) = ch;
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}
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}
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puts(xtoa(value));
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puts(xtoa(value));
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putchar(' ');
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putchar(' ');
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}
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}
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puts("\r\n");
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puts("\r\n");
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break;
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break;
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case 'F':
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FlashErase(0);
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FlashWrite((uint16*)RAM_EXTERNAL_BASE, 0, 1024*128);
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break;
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case 0x3c: //raw test.bin file
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case 0x3c: //raw test.bin file
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ptr1 = (unsigned char*)0x10000000;
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ptr1 = (unsigned char*)0x10000000;
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for(i = 0; i < 1024*1024; ++i)
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for(i = 0; i < 1024*1024; ++i)
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{
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{
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ptr1[i] = (unsigned char)ch;
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ptr1[i] = (unsigned char)ch;
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