X-Git-Url: https://hackdaworld.org/gitweb/?p=my-code%2Farm.git;a=blobdiff_plain;f=betty%2Ffwbc.c;h=187481916da4c8c127c5730dd7a883f08b319b18;hp=9682ee8292fb4396fb98f16f29aaf2560844e0a6;hb=HEAD;hpb=ba94d4dc80e71b41a6458e028dd45673782bc5f5

diff --git a/betty/fwbc.c b/betty/fwbc.c
index 9682ee8..1874819 100644
--- a/betty/fwbc.c
+++ b/betty/fwbc.c
@@ -27,11 +27,17 @@
 #define MMAP_RAM		0x02
 #define MMAP_EXT		0x03
 
+/* band 0/2 & bootloader addr */
+#define BANK0			0x80000000
+#define BANK2			0x82000000
+#define BOOTLOADER		0x7fffe000
+
 /*
  * type definitions
  */
 
 typedef unsigned char u8;
+typedef unsigned short u16;
 typedef unsigned int u32;
 
 /*
@@ -49,29 +55,89 @@ void uart0_send_char(char send);
 
 int main(void) {
 
+	/* variables */
+
+	u16 *mem=0;
+	u32 *bl=0;
+	u32 i,len;
+	u8 start;
+
 	/* memory mapping of interrupt vectors to static ram */
 
 	//mmap_init(MMAP_RAM);
 
 	/* uart initialization */
 
-#ifdef USE_FUNCTIONS
 	//uart0_init();
-#else
+
 	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
-#endif
 
 	/* external memory init */
 
+	BCFG0=0x1000FBEF;		// no boot[1:0] influence? (thnx colibri)
+					// BCFG2 should be fine as is
+
+	while(1) {
+
+	/* wait for fwdump to send transmit start character */
+	start=0x23;
 	while(1) {
+		while(!(UART0_LSR&(1<<0)))
+			continue;
+		start=UART0_RBR;
+		if(start=='0') {
+			mem=(u16 *)BANK0;
+			len=0x80000;
+			break;
+		}
+		if(start=='2') {
+			mem=(u16 *)BANK2;
+			len=0x80000;
+			break;
+		}
+		if(start=='b') {
+			BCFG0=0x1000FBEF;	// 32 bit width
+			bl=(u32 *)BOOTLOADER;
+			len=0x800;
+			break;
+		}
+	}
+
+	/* transmit 1 mb of data */
+	for(i=0;i<len;i++) {			// care for endianness
+
+		while(!(UART0_LSR&(1<<5)))
+			continue;
+		if(start=='b')
+			UART0_THR=(*bl&0xff);
+		else
+			UART0_THR=(*mem&0xff);
+
 		while(!(UART0_LSR&(1<<5)))
 			continue;
-		UART0_THR=0x23;
+		if(start=='b')
+			UART0_THR=((*bl&0xff00)>>8);
+		else {
+			UART0_THR=((*mem&0xff00)>>8);
+			mem++;
+		}
+
+		if(start=='b') {
+			while(!(UART0_LSR&(1<<5)))
+				continue;
+			UART0_THR=((*bl&0xff0000)>>16);
+			while(!(UART0_LSR&(1<<5)))
+				continue;
+			UART0_THR=((*bl&0xff000000)>>24);
+			bl++;
+		}
+	}
+
 	}
 
 	return 0;