From 6c971d9882182e2760171231cec0317d539eb979 Mon Sep 17 00:00:00 2001 From: hackbard Date: Fri, 31 Aug 2007 15:00:12 +0200 Subject: [PATCH 1/1] safety checkin of fwflash tool (hacking counterpart (lpcload) atm) --- betty/fwflash.c | 258 ++++++++++++++++++++++++++++-------------------- 1 file changed, 150 insertions(+), 108 deletions(-) diff --git a/betty/fwflash.c b/betty/fwflash.c index 508b09c..8b89941 100644 --- a/betty/fwflash.c +++ b/betty/fwflash.c @@ -17,9 +17,12 @@ * defines */ -/* bank 0/2 addr */ +/* bank 0/2 and boootloader addr/size */ #define BANK0 0x80000000 #define BANK2 0x82000000 +#define BANK_SIZE 0x00100000 +#define BOOTLOADER 0x7fffe000 +#define BL_SIZE 0x00000800 /* flash cmd addresses - flash[0-18] <--> arm[1-19]*/ #define B0F555 (*((volatile unsigned long *)(BANK0|0xaaa))) // 0x555 @@ -30,6 +33,7 @@ /* commands */ #define CMD_READ 'R' #define CMD_CHIP_ERASE 'E' +#define CMD_CHIP_ID 'I' #define BUFSIZE 16 @@ -42,33 +46,102 @@ typedef unsigned short u16; typedef unsigned int u32; /* - * define macros + * functions */ -#define TX_BYTE(x) while(!(UART0_LSR&(1<<5))) continue; \ - UART0_THR=x +void mmap_init(u8 memtype) { -#define TX_NL TX_BYTE('\n'); TX_BYTE('\r') + MEMMAP=memtype; +} -#define TX_STRING(x,len) for(scnt=0;scnt tx, rx + UART0_FCR=0x07; // enable fifo + UART0_LCR=0x83; // set dlab + word length + UART0_DLL=0x10; // br: 9600 @ 10/4 mhz + UART0_DLM=0x00; + UART0_LCR=0x03; // unset dlab +} -void mmap_init(u8 memtype); -void uart0_init(void); -void uart0_send_string(char *txbuf); -void uart0_send_char(char send); +void uart0_send_string(char *txbuf) { -/* - * global variables - */ + int i; + + i=0; + + while(txbuf[i]) { + UART0_THR=txbuf[i++]; + /* flush if tx buffer maximum reached */ + if(!(i%16)) + while(!(UART0_LSR&(1<<6))) + continue; + } + + /* flush if \n and \r do not fit in the tx buffer */ + if(i>14) + while(!(UART0_LSR&(1<<6))) + continue; -int scnt; + UART0_THR='\n'; + UART0_THR='\r'; + + /* flush uart0 anyways */ + while(!(UART0_LSR&(1<<6))) + continue; +} + +void uart0_send_buf16(u16 *buf,int len) { + + int i; + + i=0; + + for(i=0;i>8)&0xff; + } +} + +void uart0_send_buf32(u32 *buf,int len) { + + int i; + + i=0; + + for(i=0;i>8)&0xff; + UART0_THR=(buf[i]>>16)&0xff; + UART0_THR=(buf[i]>>24)&0xff; + } +} + +void uart0_send_byte(u8 send) { + + while(!(UART0_LSR&(1<<5))) + continue; + + UART0_THR=send; +} + +u8 uart0_get_byte(void) { + + u8 rx; + + while(!(UART0_LSR&(1<<0))) + continue; + + rx=UART0_RBR; + + return rx; +} /* * main function @@ -78,10 +151,9 @@ int main(void) { /* variables */ - u32 i,addrlen,datalen; + u32 i,addrlen,datalen,addr; u8 buf[BUFSIZE]; - u32 addr; - u16 *dptr; + u16 data; u8 cmd; u8 txrx; @@ -90,18 +162,9 @@ int main(void) { //mmap_init(MMAP_RAM); /* uart initialization */ - - //uart0_init(); - - PINSEL0=0x05; // pin select -> tx, rx - UART0_FCR=0x07; // enable fifo - UART0_LCR=0x83; // set dlab + word length - UART0_DLL=0x10; // br: 9600 @ 10/4 mhz - UART0_DLM=0x00; - UART0_LCR=0x03; // unset dlab + uart0_init(); /* external memory init */ - BCFG0=0x1000FBEF; // BCFG2 should be fine as is /* begin the main loop */ @@ -110,52 +173,57 @@ int main(void) { /* receive cmd */ while(1) { - while(!(UART0_LSR&(1<<0))) - continue; - cmd=UART0_RBR; - - if(cmd==CMD_CHIP_ERASE) { - addrlen=0; - datalen=1; - break; + cmd=uart0_get_byte(); + txrx=1; + switch(cmd) { + case CMD_CHIP_ERASE: + addrlen=0; + datalen=1; + break; + case CMD_READ: + addrlen=4; + datalen=4; + break; + case CMD_CHIP_ID: + addrlen=0; + datalen=1; + break; + default: + uart0_send_byte('f'); + txrx=0; + break; } - if(cmd==CMD_READ) { - addrlen=4; - datalen=1; + if(txrx) { + /* send an ack */ + uart0_send_byte(cmd); break; } } /* receive (only if there is) more data from uart0 */ - addr=0; for(i=0;i=BANK0)&(addr+datalen=BANK2)&(addr+datalen=BOOTLOADER)&(addr+datalen tx, rx - UART0_FCR=0x07; // enable fifo - UART0_LCR=0x83; // set dlab + word length - UART0_DLL=0x10; // br: 9600 @ 10/4 mhz - UART0_DLM=0x00; - UART0_LCR=0x03; // unset dlab -} - -void uart0_send_string(char *txbuf) { - - int i; - - i=0; - - while(txbuf[i]) - UART0_THR=txbuf[i++]; - UART0_THR='\n'; - UART0_THR='\r'; - - while(!(UART0_LSR&(1<<6))) {} -} - -void uart0_send_char(char send) { - - while(!(UART0_LSR&(1<<5))) - continue; - - UART0_THR=send; -} - -- 2.39.2