*
*/
+/*
+ * include files
+ */
+
#include "lpc2xxx.h"
+/*
+ * defines
+ */
+
+/* misc */
#define OSC_CLOCK 10000000
#define BAUDRATE 9600
#define P_DIV 4
#define P_CLOCK (OSC_CLOCK/P_DIV)
+/* memory mapping */
+#define MMAP_BL 0x00
+#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;
+/*
+ * function prototypes
+ */
-/* memory mapping */
+void mmap_init(u8 memtype);
+void uart0_init(void);
+void uart0_send_string(char *txbuf);
+void uart0_send_char(char send);
-#define MMAP_BL 0x00
-#define MMAP_RAM 0x02
-#define MMAP_EXT 0x03
+/*
+ * main function
+ */
-void mmap_init(u8 memtype) {
+int main(void) {
- MEMMAP=memtype;
-}
+ /* variables */
-void uart0_init(void) {
+ u16 *mem=0;
+ u32 *bl=0;
+ u32 i,len;
+ u8 start;
- /* pin select -> tx rx */
- PINSEL0=0x05;
+ /* memory mapping of interrupt vectors to static ram */
+
+ //mmap_init(MMAP_RAM);
- /* enable fifo */
- UART0_FCR=0x07;
+ /* uart initialization */
- /* set dlab + word length */
- UART0_LCR=0x83;
+ //uart0_init();
- /* set baud rate to 9600 @ 10/4 mhz */
- UART0_DLL=0x10;
+ 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
+
+ /* external memory init */
+
+ BCFG0=0x1000FBEF; // no boot[1:0] influence? (thnx colibri)
+ // BCFG2 should be fine as is
- /* unset dlab */
- UART0_LCR=0x03;
+ 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;
+ 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;
+}
+
+/*
+ * functions
+ */
+
+void mmap_init(u8 memtype) {
+
+ MEMMAP=memtype;
}
-void uart_send(char *txbuf) {
+void uart0_init(void) {
+
+ 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
+}
+
+void uart0_send_string(char *txbuf) {
int i;
while(!(UART0_LSR&(1<<6))) {}
}
-int main(void) {
-
- char txbuf[]="uart0 working";
-
- /* memory mapping of interrupt vectors to static ram */
- mmap_init(MMAP_RAM);
+void uart0_send_char(char send) {
- /* initialization */
- uart0_init();
+ while(!(UART0_LSR&(1<<5)))
+ continue;
- while(1) {
- uart_send(txbuf);
- }
-
- return 0;
+ UART0_THR=send;
}