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URL https://opencores.org/ocsvn/minsoc/minsoc/trunk

Subversion Repositories minsoc

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  • This comparison shows the changes necessary to convert path 
    /minsoc/trunk
    from Rev 35 to Rev 36
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  •

Rev 35 → Rev 36

/utils/cable_parallel.c
0,0 → 1,219
/* cable_parallel.c - Parallel cable drivers (XPC3 and XESS) for the Advanced JTAG Bridge
Copyright (C) 2001 Marko Mlinar, markom@opencores.org
 
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
 
 
 
#include <stdio.h>
#include <unistd.h>
 
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <linux/ppdev.h>
#include <linux/ioctl.h>
#include <linux/parport.h>
 
#include "cable_common.h"
#include "errcodes.h"
 
 
// Common functions used by both cable types
static int cable_parallel_out(uint8_t value);
static int cable_parallel_inout(uint8_t value, uint8_t *inval);
 
 
int fd;
 
 
 
/////////////////////////////////////////////////////////////////////////////////
/*-------------------------------------[ Parallel port specific functions ]---*/
///////////////////////////////////////////////////////////////////////////////
 
int cable_parallel_init()
{
/*
//#ifndef WIN32
if (ioperm(base, 3, 1)) {
fprintf(stderr, "Couldn't get the port at %x\n", base);
perror("Root privileges are required.\n");
return APP_ERR_INIT_FAILED;
}
printf("Connected to parallel port at %x\n", base);
printf("Dropping root privileges.\n");
setreuid(getuid(), getuid());
//#endif
*/
int mode = IEEE1284_MODE_COMPAT;
fd = open("/dev/parport0", O_RDWR | O_NONBLOCK);
if (fd == -1)
{
perror("Not able to acquire the device desriptor\n");
return APP_ERR_INIT_FAILED;
}
if (ioctl(fd, PPCLAIM) == -1)
{
perror("Fail to claim the interface for itself.\n");
return APP_ERR_INIT_FAILED;
}
if (ioctl(fd, PPSETMODE, &mode) == -1)
{
perror("Setting compatibility mode failed.\n");
return APP_ERR_INIT_FAILED;
}
 
return APP_ERR_NONE;
}
 
 
int cable_parallel_opt(int c, char *str)
{
switch(c) {
case 'p':
// if(!sscanf(str, "%x", &base)) {
// fprintf(stderr, "p parameter must have a hex number as parameter\n");
return APP_ERR_BAD_PARAM;
// }
break;
default:
fprintf(stderr, "Unknown parameter '%c'\n", c);
return APP_ERR_BAD_PARAM;
}
return APP_ERR_NONE;
}
 
/*-----------------------------------------[ Physical board wait function ]---*/
void cable_parallel_phys_wait()
{
/* Multiple users have reported poor performance of parallel cables,
* which has been traced to usleep() sleeping much longer than
* microseconds. The same users have reported error-free functionality
* and an order of magnitude improvement in upload speed.
* If you get strange data errors while running, add this sleep back
* in, or perhaps a busy-wait delay.
*/
/* usleep(10); */
}
 
/*----------------------------------------------[ xpc3 specific functions ]---*/
int cable_xpc3_out(uint8_t value)
{
uint8_t out = 0;
 
/* First convert the bits in value byte to the ones that the cable wants */
if(value & TCLK_BIT)
out |= 0x02; /* D1 pin 3 */
if(value & TRST_BIT)
out |= 0x10; /* Not used */
if(value & TDI_BIT)
out |= 0x01; /* D0 pin 2 */
if(value & TMS_BIT)
out |= 0x04; /* D2 pin 4 */
 
return cable_parallel_out(out);
}
 
int cable_xpc3_inout(uint8_t value, uint8_t *inval)
{
uint8_t in;
int retval;
uint8_t out = 0;
 
/* First convert the bits in value byte to the ones that the cable wants */
if(value & TCLK_BIT)
out |= 0x02; /* D1 pin 3 */
if(value & TRST_BIT)
out |= 0x10; /* Not used */
if(value & TDI_BIT)
out |= 0x01; /* D0 pin 2 */
if(value & TMS_BIT)
out |= 0x04; /* D2 pin 4 */
 
retval = cable_parallel_inout(out, &in);
 
if(in & 0x10) /* S6 pin 13 */
*inval = 1;
else
*inval = 0;
 
return retval;
}
 
/*----------------------------------------------[ xess specific functions ]---*/
int cable_xess_out(uint8_t value)
{
uint8_t out = 0;
 
/* First convert the bits in value byte to the ones that the cable wants */
if(value & TCLK_BIT)
out |= 0x04; /* D2 pin 4 */
if(value & TRST_BIT)
out |= 0x08; /* D3 pin 5 */
if(value & TDI_BIT)
out |= 0x10; /* D4 pin 6 */
if(value & TMS_BIT)
out |= 0x20; /* D3 pin 5 */
 
return cable_parallel_out(out);
}
 
uint8_t cable_xess_inout(uint8_t value, uint8_t *inval)
{
uint8_t in;
int retval;
uint8_t out = 0;
 
/* First convert the bits in value byte to the ones that the cable wants */
if(value & TCLK_BIT)
out |= 0x04; /* D2 pin 4 */
if(value & TRST_BIT)
out |= 0x08; /* D3 pin 5 */
if(value & TDI_BIT)
out |= 0x10; /* D4 pin 6 */
if(value & TMS_BIT)
out |= 0x20; /* D3 pin 5 */
 
retval = cable_parallel_inout(out, &in);
 
if(in & 0x20) /* S5 pin 12*/
*inval = 1;
else
*inval = 0;
 
return retval;
}
 
 
/*----------------------------------------------[ common helper functions ]---*/
// 'static' for internal access only
 
static int cable_parallel_out(uint8_t value)
{
ioctl(fd, PPWDATA, &value);
 
return APP_ERR_NONE;
}
 
static int cable_parallel_inout(uint8_t value, uint8_t *inval)
{
ioctl(fd, PPRSTATUS, inval);
ioctl(fd, PPWDATA, &value);
 
return APP_ERR_NONE;
}
utils/cable_parallel.c Property changes : Added: svn:executable ## -0,0 +1 ## +* \ No newline at end of property Index: utils/minsoc_wb_32_8_bridge.v =================================================================== --- utils/minsoc_wb_32_8_bridge.v (nonexistent) +++ utils/minsoc_wb_32_8_bridge.v (revision 36) @@ -0,0 +1,52 @@ + +module minsoc_wb_32_8_bridge( + wb_32_sel_i, + wb_32_dat_i, wb_32_dat_o, wb_32_adr_i, + + wb_8_dat_i, wb_8_dat_o, wb_8_adr_i +); + +input [3:0] wb_32_sel_i; + +input [31:0] wb_32_dat_i; +output reg [31:0] wb_32_dat_o; +input [31:0] wb_32_adr_i; + +output reg [7:0] wb_8_dat_i; +input [7:0] wb_8_dat_o; +output [31:0] wb_8_adr_i; + +reg [1:0] wb_8_adr; + +// put output to the correct byte in 32 bits using select line +always @(wb_32_sel_i or wb_8_dat_o) + case (wb_32_sel_i) + 4'b0001: wb_32_dat_o <= #1 {24'b0, wb_8_dat_o}; + 4'b0010: wb_32_dat_o <= #1 {16'b0, wb_8_dat_o , 8'b0}; + 4'b0100: wb_32_dat_o <= #1 {8'b0, wb_8_dat_o , 16'b0}; + 4'b1000: wb_32_dat_o <= #1 {wb_8_dat_o , 24'b0}; + 4'b1111: wb_32_dat_o <= #1 {24'b0, wb_8_dat_o}; + default: wb_32_dat_o <= #1 0; + endcase // case(wb_sel_i) + +always @(wb_32_sel_i or wb_32_dat_i) +begin + case (wb_32_sel_i) + 4'b0001 : wb_8_dat_i = wb_32_dat_i[7:0]; + 4'b0010 : wb_8_dat_i = wb_32_dat_i[15:8]; + 4'b0100 : wb_8_dat_i = wb_32_dat_i[23:16]; + 4'b1000 : wb_8_dat_i = wb_32_dat_i[31:24]; + default : wb_8_dat_i = wb_32_dat_i[7:0]; + endcase // case(wb_sel_i) + case (wb_32_sel_i) + 4'b0001 : wb_8_adr = 2'h3; + 4'b0010 : wb_8_adr = 2'h2; + 4'b0100 : wb_8_adr = 2'h1; + 4'b1000 : wb_8_adr = 2'h0; + default : wb_8_adr = 2'h0; + endcase // case(wb_sel_i) +end + +assign wb_8_adr_i = { wb_32_adr_i[31:2] , wb_8_adr }; + +endmodule Index: doc/FAQ.pdf =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: doc/src/HOWTO.odt =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: doc/src/INSTALL.odt =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: doc/src/FAQ.odt =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: doc/HOWTO.pdf =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: doc/INSTALL.pdf =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: sw/eth/eth.c =================================================================== --- sw/eth/eth.c (revision 35) +++ sw/eth/eth.c (revision 36) @@ -1,202 +1,32 @@ #include "../support/support.h" #include "../support/board.h" -#include "../support/uart.h" #include "../support/spr_defs.h" -#include "eth.h" +#include "../drivers/uart.h" +#include "../drivers/eth.h" -void uart_print_str(char *); -void uart_print_long(unsigned long); -// Dummy or32 except vectors -void buserr_except(){} -void dpf_except(){} -void ipf_except(){} -void lpint_except(){} -void align_except(){} -void illegal_except(){} -/*void hpint_except(){ +extern int eth_rx_len; +extern int eth_rx_done, eth_tx_done; +extern unsigned char * eth_rx_data; +extern unsigned char * eth_tx_data; -}*/ -void dtlbmiss_except(){} -void itlbmiss_except(){} -void range_except(){} -void syscall_except(){} -void res1_except(){} -void trap_except(){} -void res2_except(){} - - -void uart_interrupt() -{ - char lala; - unsigned char interrupt_id; - interrupt_id = REG8(UART_BASE + UART_IIR); - if ( interrupt_id & UART_IIR_RDI ) - { - lala = uart_getc(); - uart_putc(lala+1); - } - -} - - -void uart_print_str(char *p) -{ - while(*p != 0) { - uart_putc(*p); - p++; - } -} - -void uart_print_long(unsigned long ul) -{ - int i; - char c; - - - uart_print_str("0x"); - for(i=0; i<8; i++) { - - c = (char) (ul>>((7-i)*4)) & 0xf; - if(c >= 0x0 && c<=0x9) - c += '0'; - else - c += 'a' - 10; - uart_putc(c); - } - -} - -void uart_print_short(unsigned long ul) -{ - int i; - char c; - char flag=0; - - - uart_print_str("0x"); - for(i=0; i<8; i++) { - - c = (char) (ul>>((7-i)*4)) & 0xf; - if(c >= 0x0 && c<=0x9) - c += '0'; - else - c += 'a' - 10; - if ((c != '0') || (i==7)) - flag=1; - if(flag) - uart_putc(c); - } - -} - -int tx_done; -int rx_done; -int rx_len; -char tx_data[1536]; //max length -char rx_data[1536]; - -void eth_init() -{ - //TXEN & RXEN = 1; PAD & CRC = 1; FULLD = 1 - REG32(ETH_BASE + ETH_MODER) = ETH_TXEN | ETH_RXEN | ETH_PAD | ETH_CRCEN | ETH_FULLD; - //PHY Address = 0x001 - REG32(ETH_BASE + ETH_MIIADDRESS) = 0x00000001; - - //enable all interrupts - REG32(ETH_BASE + ETH_INT_MASK) = ETH_RXC | ETH_TXC | ETH_BUSY | ETH_RXE | ETH_RXB | ETH_TXE | ETH_TXB; - - //set MAC ADDRESS - REG32(ETH_BASE + ETH_MAC_ADDR1) = OWN_MAC_ADDRESS >> 32; //low word = mac address high word - REG32(ETH_BASE + ETH_MAC_ADDR0) = OWN_MAC_ADDRESS; //mac address rest - - //configure TXBD0 - REG32(ETH_BASE + ETH_TXBD0H) = tx_data; //address used for tx_data - REG32(ETH_BASE + ETH_TXBD0L) = TX_READY; //length = 0 | PAD & CRC = 1 | IRQ & WR = 1 - - //configure RXBD0 - REG32(ETH_BASE + ETH_RXBD0H) = rx_data; //address used for tx_data - REG32(ETH_BASE + ETH_RXBD0L) = RX_READY; //len = 0 | IRQ & WR = 1 | EMPTY = 1 - - //set txdata - tx_data[0] = BROADCAST_ADDRESS >> 40; - tx_data[1] = BROADCAST_ADDRESS >> 32; - tx_data[2] = BROADCAST_ADDRESS >> 24; - tx_data[3] = BROADCAST_ADDRESS >> 16; - tx_data[4] = BROADCAST_ADDRESS >> 8; - tx_data[5] = BROADCAST_ADDRESS; - - tx_data[6] = OWN_MAC_ADDRESS >> 40; - tx_data[7] = OWN_MAC_ADDRESS >> 32; - tx_data[8] = OWN_MAC_ADDRESS >> 24; - tx_data[9] = OWN_MAC_ADDRESS >> 16; - tx_data[10] = OWN_MAC_ADDRESS >> 8; - tx_data[11] = OWN_MAC_ADDRESS; - - //erase interrupts - REG32(ETH_BASE + ETH_INT_SOURCE) = ETH_RXC | ETH_TXC | ETH_BUSY | ETH_RXE | ETH_RXB | ETH_TXE | ETH_TXB; - - tx_done = 1; - rx_done = 0; - rx_len = 0; -} - -void eth_send(int length) -{ - if (!tx_done) - return; - - tx_done = 0; - tx_data[12] = length >> 8; - tx_data[13] = length; - - REG32(ETH_BASE + ETH_TXBD0L) = (( 0x0000FFFF & ( length + HDR_LEN ) ) << 16) | BD_SND; -} - void eth_receive() { int i; uart_print_str("Length: \n"); - uart_print_long(rx_len - HDR_LEN - CRC_LEN); + uart_print_long(eth_rx_len); uart_print_str("\n"); uart_print_str("Data: \n"); - for ( i = 0; i < rx_len - HDR_LEN - CRC_LEN; i++ ) + for ( i = 0; i < eth_rx_len; i++ ) { - uart_print_short(rx_data[i+HDR_LEN]); -// uart_print_str("\n"); + uart_print_short(eth_rx_data[i]); + uart_print_str("\n"); } - - rx_done = 0; - rx_len = 0; + eth_recv_ack(); } -void eth_interrupt() -{ - unsigned long source = REG32(ETH_BASE + ETH_INT_SOURCE); - switch (source) - { - case ETH_TXB: - tx_done = 1; - //erase interrupt - REG32(ETH_BASE + ETH_INT_SOURCE) |= ETH_TXB; - break; - - case ETH_RXB: - rx_done = 1; - //erase interrupt - REG32(ETH_BASE + ETH_INT_SOURCE) |= ETH_RXB; - //accept further data (reset RXBD to empty) - rx_len = (REG32(ETH_BASE + ETH_RXBD0L) >> 16); - REG32(ETH_BASE + ETH_RXBD0L) = RX_READY; //len = 0 | IRQ & WR = 1 | EMPTY = 1 - break; - - default: - break; - } -} - int main() { unsigned long lalala; @@ -203,6 +33,7 @@ uart_init(); int_init(); + eth_init(); int_add(UART_IRQ, &uart_interrupt); int_add(ETH_IRQ, ð_interrupt); @@ -210,18 +41,16 @@ we don't link C library. */ uart_print_str("Hello World.\n\r"); - eth_init(); + eth_tx_data[0] = 0xFF; + eth_tx_data[1] = 0x2B; + eth_tx_data[2] = 0x40; + eth_tx_data[3] = 0x50; - tx_data[14] = 0xFF; - tx_data[15] = 0x2B; - tx_data[16] = 0x40; - tx_data[17] = 0x50; - eth_send(4); while(1) { - if (rx_done) + if (eth_rx_done) { eth_receive(); }
/sw/eth/eth.h
80,8 → 80,8
#define ETH_TXBD_CS 0x00000001
 
//user defines
#define OWN_MAC_ADDRESS 0x554734228892
#define BROADCAST_ADDRESS 0xFFFFFFFFFFFF
#define OWN_MAC_ADDRESS 0x554734228892ULL
#define BROADCAST_ADDRESS 0xFFFFFFFFFFFFULL
 
#define HDR_LEN 14
#define CRC_LEN 4
/sw/eth/Makefile
1,10 → 1,10
include ../support/Makefile.inc
cases = eth-nocache eth-icdc
common = ../support/libsupport.a ../support/except.o
drivers = ../drivers/libdrivers.a
 
all: $(cases)
 
eth-nocache: eth.o ../support/reset-nocache.o $(common)
eth-nocache: eth.o ../support/reset-nocache.o $(common) $(drivers)
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) $(GCC_LIB_OPTS) -T ../support/orp.ld $? -o $@.or32
$(OR32_TOOL_PREFIX)-objcopy -O binary $@.or32 $@.bin
../utils/bin2hex $@.bin 1 -size_word > $@$(FLASH_MEM_HEX_FILE_SUFFIX).hex
11,8 → 11,8
../utils/bin2vmem $@.bin > $@.vmem
 
 
eth-icdc: eth.o ../support/reset-icdc.o
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) $(GCC_LIB_OPTS) -T ../support/orp.ld $? -o $@.or32 $(common)
eth-icdc: eth.o ../support/reset-icdc.o $(common) $(drivers)
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) $(GCC_LIB_OPTS) -T ../support/orp.ld $? -o $@.or32
$(OR32_TOOL_PREFIX)-objcopy -O binary $@.or32 $@.bin
../utils/bin2hex $@.bin 1 -size_word > $@$(FLASH_MEM_HEX_FILE_SUFFIX).hex
../utils/bin2vmem $@.bin > $@.vmem
21,3 → 21,4
eth.o: eth.c
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) $? -c -o $@
 
include ../support/Makefile.inc
/sw/uart/uart.c
1,96 → 1,10
#include "../support/support.h"
#include "../support/board.h"
#include "../support/uart.h"
 
#include "../support/spr_defs.h"
 
void uart_print_str(char *);
void uart_print_long(unsigned long);
#include "../drivers/uart.h"
 
// Dummy or32 except vectors
void buserr_except(){}
void dpf_except(){}
void ipf_except(){}
void lpint_except(){}
void align_except(){}
void illegal_except(){}
/*void hpint_except(){
 
}*/
void dtlbmiss_except(){}
void itlbmiss_except(){}
void range_except(){}
void syscall_except(){}
void res1_except(){}
void trap_except(){}
void res2_except(){}
 
 
void uart_interrupt()
{
char lala;
unsigned char interrupt_id;
interrupt_id = REG8(UART_BASE + UART_IIR);
if ( interrupt_id & UART_IIR_RDI )
{
lala = uart_getc();
uart_putc(lala+1);
}
}
 
 
void uart_print_str(char *p)
{
while(*p != 0) {
uart_putc(*p);
p++;
}
}
 
void uart_print_long(unsigned long ul)
{
int i;
char c;
 
uart_print_str("0x");
for(i=0; i<8; i++) {
 
c = (char) (ul>>((7-i)*4)) & 0xf;
if(c >= 0x0 && c<=0x9)
c += '0';
else
c += 'a' - 10;
uart_putc(c);
}
 
}
 
void uart_print_short(unsigned long ul)
{
int i;
char c;
char flag=0;
 
uart_print_str("0x");
for(i=0; i<8; i++) {
 
c = (char) (ul>>((7-i)*4)) & 0xf;
if(c >= 0x0 && c<=0x9)
c += '0';
else
c += 'a' - 10;
if ((c != '0') || (i==7))
flag=1;
if(flag)
uart_putc(c);
}
 
}
 
 
 
int main()
{
uart_init();
/sw/uart/Makefile
1,10 → 1,10
include ../support/Makefile.inc
cases = uart-nocache uart-icdc
common = ../support/libsupport.a ../support/except.o
drivers = ../drivers/libdrivers.a
 
all: $(cases)
 
uart-nocache: uart.o ../support/reset-nocache.o $(common)
uart-nocache: uart.o ../support/reset-nocache.o $(common) $(drivers)
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) $(GCC_LIB_OPTS) -T ../support/orp.ld $? -o $@.or32
$(OR32_TOOL_PREFIX)-objcopy -O binary $@.or32 $@.bin
../utils/bin2hex $@.bin 1 -size_word > $@$(FLASH_MEM_HEX_FILE_SUFFIX).hex
11,8 → 11,8
../utils/bin2vmem $@.bin > $@.vmem
 
 
uart-icdc: uart.o ../support/reset-icdc.o
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) $(GCC_LIB_OPTS) -T ../support/orp.ld $? -o $@.or32 $(common)
uart-icdc: uart.o ../support/reset-icdc.o $(common) $(drivers)
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) $(GCC_LIB_OPTS) -T ../support/orp.ld $? -o $@.or32
$(OR32_TOOL_PREFIX)-objcopy -O binary $@.or32 $@.bin
../utils/bin2hex $@.bin 1 -size_word > $@$(FLASH_MEM_HEX_FILE_SUFFIX).hex
../utils/bin2vmem $@.bin > $@.vmem
21,3 → 21,4
uart.o: uart.c
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) $? -c -o $@
 
include ../support/Makefile.inc
/sw/support/Makefile.inc
4,7 → 4,7
 
#GCC_LIB_OPTS= -lgcc -liberty
 
GCC_OPT=-mhard-mul -g
GCC_OPT=-mhard-mul -g -nostdlib
 
ifdef UART_PRINTF
GCC_OPT += -DUART_PRINTF
/sw/support/except.S
64,7 → 64,7
 
l.movhi r9,hi(end_except) //set return addr to end_except instruction
l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
l.j _lpint_except
l.j _tick_except
l.nop
 
.org 0x400
106,7 → 106,7
 
l.movhi r9,hi(end_except) //set return addr to end_except instruction
l.ori r9,r9,lo(end_except) //set return addr to end_except instruction
l.j _hpint_except //jmp to C interrupt handler (returns later to end_except)
l.j _ext_except //jmp to C interrupt handler (returns later to end_except)
l.nop
 
 
/sw/support/uart.c
29,7 → 29,7
 
void uart_init(void)
{
int devisor;
int divisor;
/* Reset receiver and transmiter */
/* Set RX interrupt for each byte */
36,16 → 36,16
REG8(UART_BASE + UART_FCR) = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT | UART_FCR_TRIGGER_1;
/* Enable RX interrupt */
REG8(UART_BASE + UART_IER) = 0x01;
REG8(UART_BASE + UART_IER) = UART_IER_RDI | UART_IER_THRI;
/* Set 8 bit char, 1 stop bit, no parity */
REG8(UART_BASE + UART_LCR) = UART_LCR_WLEN8 & ~(UART_LCR_STOP | UART_LCR_PARITY);
/* Set baud rate */
devisor = IN_CLK/(16 * UART_BAUD_RATE);
divisor = IN_CLK/(16 * UART_BAUD_RATE);
REG8(UART_BASE + UART_LCR) |= UART_LCR_DLAB;
REG8(UART_BASE + UART_DLL) = devisor & 0x000000ff;
REG8(UART_BASE + UART_DLM) = (devisor >> 8) & 0x000000ff;
REG8(UART_BASE + UART_DLL) = divisor & 0x000000ff;
REG8(UART_BASE + UART_DLM) = (divisor >> 8) & 0x000000ff;
REG8(UART_BASE + UART_LCR) &= ~(UART_LCR_DLAB);
return;
/sw/support/support.c
15,24 → 15,9
#endif
 
#if OR32
void excpt_dummy();
void int_main();
 
unsigned long excpt_buserr = (unsigned long) excpt_dummy;
unsigned long excpt_dpfault = (unsigned long) excpt_dummy;
unsigned long excpt_ipfault = (unsigned long) excpt_dummy;
unsigned long excpt_tick = (unsigned long) excpt_dummy;
unsigned long excpt_align = (unsigned long) excpt_dummy;
unsigned long excpt_illinsn = (unsigned long) excpt_dummy;
unsigned long excpt_int = (unsigned long) int_main;
unsigned long excpt_dtlbmiss = (unsigned long) excpt_dummy;
unsigned long excpt_itlbmiss = (unsigned long) excpt_dummy;
unsigned long excpt_range = (unsigned long) excpt_dummy;
unsigned long excpt_syscall = (unsigned long) excpt_dummy;
unsigned long excpt_break = (unsigned long) excpt_dummy;
unsigned long excpt_trap = (unsigned long) excpt_dummy;
 
void hpint_except()
void ext_except()
{
int_main();
}
59,7 → 44,7
#define PRINTFBUFFER_SIZE 512
char PRINTFBUFFER[PRINTFBUFFER_SIZE]; // Declare a global printf buffer
 
void printf(const char *fmt, ...)
void minsoc_printf(const char *fmt, ...)
{
// init uart if not done already
if (!uart_init_done)
82,12 → 67,11
uart_putc(PRINTFBUFFER[c++]);
va_end(args);
}
 
#else
/* activate printf support in simulator */
void printf(const char *fmt, ...)
void minsoc_printf(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
181,6 → 165,3
}
 
#endif
 
 
void excpt_dummy() {}
/sw/support/vfnprintf.c
96,7 → 96,7
 
// INCLUDES
 
#include <stdlib.h> // For mbtowc()
//#include <stdlib.h> // For mbtowc()
#include <stddef.h>
 
 
113,9 → 113,6
CYG_MACRO_END
 
#include <stdarg.h> // Variable argument definitions
//#include <stdio.h> // Standard header for all stdio files
#include <string.h> // memchr() and strlen() functions
//#include <cyg/libc/stdio/stream.hxx> // C library streams
 
#include "vfnprintf.h"
 
150,7 → 147,31
#define FPT 0x100 /* Floating point number */
#define SIZET 0x200 /* size_t */
 
int
strlen(const char *s)
{
const char *p;
 
for (p = s; *p != '\0'; p++)
;
return (s - p);
}
 
void *
memcpy(void *dst, const void *src, size_t len)
{
const char *csrc;
char *cdst;
int i;
 
cdst = dst;
csrc = src;
for (i = len; i >= 0; i--) {
cdst[i] = csrc[i];
}
return dst;
}
 
// Function which prints back to the buffer, ptr, len bytes
// returns 1 if it should finish up, otherwise 0 to continue
int print_back_to_string(char * ptr, int len, size_t * n, int * ret, char ** stream)
/sw/support/support.h
16,7 → 16,7
#define REG16(add) *((volatile unsigned short *)(add))
#define REG32(add) *((volatile unsigned long *)(add))
 
void printf(const char *fmt, ...);
void or32_printf(const char *fmt, ...);
 
/* For writing into SPR. */
void mtspr(unsigned long spr, unsigned long value);
30,6 → 30,8
 
#endif /* OR1K */
 
#define printf or32_printf
 
/* Function to be called at entry point - not defined here. */
int main ();
 
63,4 → 65,5
extern unsigned long excpt_break;
extern unsigned long excpt_trap;
 
#endif
 
#endif /* SUPPORT_H */
/sw/support/board.h
21,6 → 21,11
#define UART_IRQ 2
#define ETH_BASE 0x92000000
#define ETH_IRQ 4
#define I2C_BASE 0x9D000000
#define I2C_IRQ 3
#define CAN_BASE 0x94000000
#define CAN_IRQ 5
 
#define MC_BASE_ADDR 0x60000000
#define SPI_BASE 0xa0000000
 
/sw/support/Makefile
1,5 → 1,3
include Makefile.inc
 
all: libsupport.a reset-nocache.o reset-ic.o reset-dc.o reset-icdc.o
 
libsupport.a: support.o int.o except.o uart.o vfnprintf.o
35,3 → 33,5
 
int.o: int.c
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) -c -o $@ $?
 
include Makefile.inc
/sw/drivers/tick.h
0,0 → 1,4
 
void tick_init(void);
 
void tick_ack(void);
/sw/drivers/interrupts.c
0,0 → 1,15
 
// Dummy or32 except vectors
void buserr_except(){}
void dpf_except(){}
void ipf_except(){}
void align_except(){}
void illegal_except(){}
void dtlbmiss_except(){}
void itlbmiss_except(){}
void range_except(){}
void syscall_except(){}
void res1_except(){}
void trap_except(){}
void res2_except(){}
 
/sw/drivers/uart.h
0,0 → 1,9
 
#include "../support/uart.h"
 
void uart_print_str(char *);
void uart_print_long(unsigned long);
 
void uart_interrupt();
void uart_print_short(unsigned long ul);
 
/sw/drivers/eth.c
0,0 → 1,102
#include "../support/board.h"
#include "../support/support.h"
#include "eth.h"
 
int eth_tx_done;
int eth_rx_done;
int eth_rx_len;
unsigned char eth_tx_packet[1536]; //max length
unsigned char eth_rx_packet[1536];
unsigned char * eth_tx_data;
unsigned char * eth_rx_data;
 
void eth_recv_ack(void)
{
eth_rx_done = 0;
eth_rx_len = 0;
//accept further data (reset RXBD to empty)
REG32(ETH_BASE + ETH_RXBD0L) = RX_READY; //len = 0 | IRQ & WR = 1 | EMPTY = 1
}
 
void eth_init()
{
//TXEN & RXEN = 1; PAD & CRC = 1; FULLD = 1
REG32(ETH_BASE + ETH_MODER) = ETH_TXEN | ETH_RXEN | ETH_PAD | ETH_CRCEN | ETH_FULLD;
//PHY Address = 0x001
REG32(ETH_BASE + ETH_MIIADDRESS) = 0x00000001;
 
//enable all interrupts
REG32(ETH_BASE + ETH_INT_MASK) = ETH_RXB | ETH_TXB;
 
//set MAC ADDRESS
REG32(ETH_BASE + ETH_MAC_ADDR1) = (OWN_MAC_ADDRESS_5 << 8) | OWN_MAC_ADDRESS_4; //low word = mac address high word
REG32(ETH_BASE + ETH_MAC_ADDR0) = (OWN_MAC_ADDRESS_3 << 24) | (OWN_MAC_ADDRESS_2 << 16)
| (OWN_MAC_ADDRESS_1 << 8) | OWN_MAC_ADDRESS_0; //mac address rest
 
//configure TXBD0
REG32(ETH_BASE + ETH_TXBD0H) = eth_tx_packet; //address used for tx_data
REG32(ETH_BASE + ETH_TXBD0L) = TX_READY; //length = 0 | PAD & CRC = 1 | IRQ & WR = 1
 
//configure RXBD0
REG32(ETH_BASE + ETH_RXBD0H) = eth_rx_packet; //address used for tx_data
REG32(ETH_BASE + ETH_RXBD0L) = RX_READY; //len = 0 | IRQ & WR = 1 | EMPTY = 1
 
//set txdata
eth_tx_packet[0] = BROADCAST_ADDRESS_5;
eth_tx_packet[1] = BROADCAST_ADDRESS_4;
eth_tx_packet[2] = BROADCAST_ADDRESS_3;
eth_tx_packet[3] = BROADCAST_ADDRESS_2;
eth_tx_packet[4] = BROADCAST_ADDRESS_1;
eth_tx_packet[5] = BROADCAST_ADDRESS_0;
 
eth_tx_packet[6] = OWN_MAC_ADDRESS_5;
eth_tx_packet[7] = OWN_MAC_ADDRESS_4;
eth_tx_packet[8] = OWN_MAC_ADDRESS_3;
eth_tx_packet[9] = OWN_MAC_ADDRESS_2;
eth_tx_packet[10] = OWN_MAC_ADDRESS_1;
eth_tx_packet[11] = OWN_MAC_ADDRESS_0;
 
//erase interrupts
REG32(ETH_BASE + ETH_INT_SOURCE) = ETH_RXC | ETH_TXC | ETH_BUSY | ETH_RXE | ETH_RXB | ETH_TXE | ETH_TXB;
 
eth_tx_done = 1;
eth_rx_done = 0;
eth_rx_len = 0;
eth_tx_data = &eth_tx_packet[HDR_LEN];
eth_rx_data = &eth_rx_packet[HDR_LEN];
}
 
int eth_send(int length)
{
if (!eth_tx_done) //if previous command not fully processed, bail out
return -1;
 
int i;
 
eth_tx_done = 0;
eth_tx_packet[12] = length >> 8;
eth_tx_packet[13] = length;
 
REG32(ETH_BASE + ETH_TXBD0L) = (( 0x0000FFFF & ( length + HDR_LEN ) ) << 16) | BD_SND;
 
return length;
}
 
void eth_interrupt()
{
unsigned long source = REG32(ETH_BASE + ETH_INT_SOURCE);
if ( source & ETH_TXB )
{
eth_tx_done = 1;
//erase interrupt
REG32(ETH_BASE + ETH_INT_SOURCE) |= ETH_TXB;
}
if ( source & ETH_RXB )
{
eth_rx_done = 1;
eth_rx_len = (REG32(ETH_BASE + ETH_RXBD0L) >> 16) - HDR_LEN - CRC_LEN;
//erase interrupt
REG32(ETH_BASE + ETH_INT_SOURCE) |= ETH_RXB;
}
}
 
/sw/drivers/can.c
0,0 → 1,150
#include "../support/board.h"
#include "../support/support.h"
#include "can.h"
 
int can_rx_done, can_tx_done;
 
int can_rx_rd_ptr;
int can_rx_wr_ptr;
int can_rx_buf_overflow;
 
can_type can_rx_data[CAN_BUF_LEN], can_tx_data;
 
can_type * can_get(void)
{
if ( !can_rx_done )
return NULL;
 
can_rx_done--;
 
int tmp;
tmp = can_rx_rd_ptr;
 
if (can_rx_rd_ptr < CAN_BUF_LEN-1)
can_rx_rd_ptr++;
else
can_rx_rd_ptr = 0;
 
return &can_rx_data[tmp];
}
 
void can_init(void)
{
unsigned char sync_jmp, baudrate_presc, timing_seg1, timing_seg2, tripple_samp = 0;
unsigned char acpt_code, acpt_mask = 0;
unsigned char clk_div = 0 & CAN_BUS_CLKDIV_MASK;
 
sync_jmp = 1;
baudrate_presc = 1;
timing_seg1 = 11;
timing_seg2 = 2;
tripple_samp = 1;
 
acpt_code = 0x81;
acpt_mask = 0xFF;
 
char timing0, timing1 = 0;
 
timing0 = (sync_jmp << CAN_BUS_TIMING_0_SYNC_JMP_SHIFT) & CAN_BUS_TIMING_0_SYNC_JMP;
timing0 |= baudrate_presc & CAN_BUS_TIMING_0_BAUD_PRESC;
 
timing1 = (tripple_samp << CAN_BUS_TIMING_1_TRIPLE_SAMP_SHIFT) & CAN_BUS_TIMING_1_TRIPLE_SAMP;
timing1 |= (timing_seg2 << CAN_BUS_TIMING_1_TIME_SEG2_SHIFT) & CAN_BUS_TIMING_1_TIME_SEG2;
timing1 |= timing_seg1 & CAN_BUS_TIMING_1_TIME_SEG1;
 
REG8(CAN_BASE+CAN_MODE) = CAN_MODE_RESET;
 
REG8(CAN_BASE+CAN_BUS_TIMING_0) = timing0;
REG8(CAN_BASE+CAN_BUS_TIMING_1) = timing1;
 
REG8(CAN_BASE+CAN_ACPT_CODE0) = acpt_code;
REG8(CAN_BASE+CAN_ACPT_MASK0) = acpt_mask;
 
REG8(CAN_BASE+CAN_BUS_MODE) &= ~CAN_BUS_MODE_CLOCK_OFF & ~CAN_BUS_MODE_EXTENDED_MODE;
 
REG8(CAN_BASE+CAN_MODE) &= ~CAN_MODE_RESET;
REG8(CAN_BASE+CAN_BUS_CLKDIV) = clk_div;
 
REG8(CAN_BASE+CAN_MODE) |= CAN_MODE_TX_IRQ_EN | CAN_MODE_RECV_IRQ_EN;
 
can_tx_done = 1;
can_rx_done = 0;
can_rx_rd_ptr = 0;
can_rx_wr_ptr = 0;
can_rx_buf_overflow = 0;
}
 
void can_recv_basic()
{
unsigned char byte0, byte1;
 
byte0 = REG8(CAN_BASE+CAN_RX_BUF);
byte1 = REG8(CAN_BASE+CAN_RX_BUF+1);
 
can_rx_data[can_rx_wr_ptr].data[0] = REG8(CAN_BASE+CAN_RX_BUF+2);
can_rx_data[can_rx_wr_ptr].data[1] = REG8(CAN_BASE+CAN_RX_BUF+3);
can_rx_data[can_rx_wr_ptr].data[2] = REG8(CAN_BASE+CAN_RX_BUF+4);
can_rx_data[can_rx_wr_ptr].data[3] = REG8(CAN_BASE+CAN_RX_BUF+5);
can_rx_data[can_rx_wr_ptr].data[4] = REG8(CAN_BASE+CAN_RX_BUF+6);
can_rx_data[can_rx_wr_ptr].data[5] = REG8(CAN_BASE+CAN_RX_BUF+7);
can_rx_data[can_rx_wr_ptr].data[6] = REG8(CAN_BASE+CAN_RX_BUF+8);
can_rx_data[can_rx_wr_ptr].data[7] = REG8(CAN_BASE+CAN_RX_BUF+9);
 
REG8(CAN_BASE+CAN_CMD) = CAN_CMD_RELEASE_BUFFER;
 
can_rx_data[can_rx_wr_ptr].identifier = (byte0 << 3) | (byte1 >> 5);
can_rx_data[can_rx_wr_ptr].rtr = byte1 & 0x10;
can_rx_data[can_rx_wr_ptr].len = byte1 & 0x0F;
 
if (can_rx_wr_ptr < CAN_BUF_LEN-1)
can_rx_wr_ptr++;
else
can_rx_wr_ptr = 0;
 
if (can_rx_wr_ptr == can_rx_rd_ptr+1) //buffer overflow
{
can_rx_done = 1;
can_rx_buf_overflow++;
}
else
can_rx_done++;
}
 
int can_send_basic()
{
if (!can_tx_done) //if previous command not fully processed, bail out
return -1;
 
can_tx_done = 0;
REG8(CAN_BASE+CAN_TX_BUF) = can_tx_data.identifier >> 3;
REG8(CAN_BASE+CAN_TX_BUF+1) = (can_tx_data.identifier << 5) | ((can_tx_data.rtr << 4) & 0x10) | (can_tx_data.len & 0x0F);
 
REG8(CAN_BASE+CAN_TX_BUF+2) = can_tx_data.data[0];
REG8(CAN_BASE+CAN_TX_BUF+3) = can_tx_data.data[1];
REG8(CAN_BASE+CAN_TX_BUF+4) = can_tx_data.data[2];
REG8(CAN_BASE+CAN_TX_BUF+5) = can_tx_data.data[3];
REG8(CAN_BASE+CAN_TX_BUF+6) = can_tx_data.data[4];
REG8(CAN_BASE+CAN_TX_BUF+7) = can_tx_data.data[5];
REG8(CAN_BASE+CAN_TX_BUF+8) = can_tx_data.data[6];
REG8(CAN_BASE+CAN_TX_BUF+9) = can_tx_data.data[7];
 
REG8(CAN_BASE+CAN_CMD) = CAN_CMD_TX_REQ;
 
return can_tx_data.len;
}
 
void can_irq(void)
{
unsigned char irq_req, rx_done;
irq_req = REG8(CAN_BASE+IRQ_READ);
rx_done = irq_req & CAN_IRQ_READ_RX;
can_tx_done = irq_req & CAN_IRQ_READ_TX;
if (rx_done)
can_recv_basic();
}
 
void can_abort(void)
{
REG8(CAN_BASE+CAN_CMD) = CAN_CMD_ABORT_TX;
}
 
/sw/drivers/i2c.h
0,0 → 1,62
 
struct i2c_type
{
unsigned char address;
unsigned char pointer;
unsigned short data;
};
 
struct i2c_mode
{
unsigned char read_write;
unsigned char byte_word;
unsigned char ptr_set;
};
 
typedef struct i2c_type i2c_type;
typedef struct i2c_mode i2c_mode;
 
#define I2C_BUF_LEN 10
 
void i2c_init(void);
void i2c_irq(void);
 
i2c_type * i2c_get(void); //return pointer to first non read received data
 
void i2c_set_ack_lvl(int ack_lvl, int final_ack_lvl);
int i2c_trans(i2c_mode * mode, i2c_type * data); //return (-1) or length (still processing previous) or asserted
 
#define I2C_PRESC_LO 0x00
#define I2C_PRESC_HI 0x01
 
#define I2C_CTR 0x02
 
#define I2C_TXR 0x03
#define I2C_RXR 0x03
 
#define I2C_CR 0x04
#define I2C_SR 0x04
 
 
//BITS
#define I2C_CTR_EN 0x80
#define I2C_CTR_IRQ_EN 0x40
 
#define I2C_TXR_ADR 0xFE
#define I2C_TXR_W 0x00
#define I2C_TXR_R 0x01
 
#define I2C_CR_STA 0x80
#define I2C_CR_STO 0x40
#define I2C_CR_RD 0x20
#define I2C_CR_WR 0x10
#define I2C_CR_ACK 0x00
#define I2C_CR_NACK 0x08
#define I2C_CR_CLR_IRQ 0x01
 
#define I2C_SR_R_ACK 0x80
#define I2C_SR_BUSY 0x40
#define I2C_SR_ARB_LOST 0x20
#define I2C_SR_TX_BUSY 0x02
#define I2C_SR_IRQ_FLAG 0x01
 
/sw/drivers/eth.h
0,0 → 1,111
 
void eth_init();
void eth_interrupt();
void eth_recv_ack(void);
 
int eth_send(int length); //return (-1) or length (still processing previous) or asserted
 
#define ETH_MODER 0x00
#define ETH_INT_SOURCE 0x04
#define ETH_INT_MASK 0x08
#define ETH_IPGT 0x0C
#define ETH_IPGR1 0x10
#define ETH_IPGR2 0x14
#define ETH_PACKETLEN 0x18
#define ETH_COLLCONF 0x1C
#define ETH_TX_BD_NUM 0x20
#define ETH_CTRLMODER 0x24
#define ETH_MIIMODER 0x28
#define ETH_MIICOMMAND 0x2C
#define ETH_MIIADDRESS 0x30
#define ETH_MIITX_DATA 0x34
#define ETH_MIIRX_DATA 0x38
#define ETH_MIISTATUS 0x3C
#define ETH_MAC_ADDR0 0x40
#define ETH_MAC_ADDR1 0x44
#define ETH_HASH0_ADR 0x48
#define ETH_HASH1_ADR 0x4C
#define ETH_TXCTRL 0x50
 
#define ETH_TXBD0H 0x404
#define ETH_TXBD0L 0x400
 
#define ETH_RXBD0H 0x604 //this depends on TX_BD_NUM but this is the standard value
#define ETH_RXBD0L 0x600 //this depends on TX_BD_NUM but this is the standard value
 
//MODER BITS
#define ETH_RECSMALL 0x00010000
#define ETH_PAD 0x00008000
#define ETH_HUGEN 0x00004000
#define ETH_CRCEN 0x00002000
#define ETH_DLYCRCEN 0x00001000
#define ETH_FULLD 0x00000400
#define ETH_EXDFREN 0x00000200
#define ETH_NOBCKOF 0x00000100
#define ETH_LOOPBCK 0x00000080
#define ETH_IFG 0x00000040
#define ETH_PRO 0x00000020
#define ETH_IAM 0x00000010
#define ETH_BRO 0x00000008
#define ETH_NOPRE 0x00000004
#define ETH_TXEN 0x00000002
#define ETH_RXEN 0x00000001
 
//INTERRUPTS BITS
#define ETH_RXC 0x00000040
#define ETH_TXC 0x00000020
#define ETH_BUSY 0x00000010
#define ETH_RXE 0x00000008
#define ETH_RXB 0x00000004
#define ETH_TXE 0x00000002
#define ETH_TXB 0x00000001
 
//BUFFER DESCRIPTOR BITS
#define ETH_RXBD_EMPTY 0x00008000
#define ETH_RXBD_IRQ 0x00004000
#define ETH_RXBD_WRAP 0x00002000
#define ETH_RXBD_CF 0x00000100
#define ETH_RXBD_MISS 0x00000080
#define ETH_RXBD_OR 0x00000040
#define ETH_RXBD_IS 0x00000020
#define ETH_RXBD_DN 0x00000010
#define ETH_RXBD_TL 0x00000008
#define ETH_RXBD_SF 0x00000004
#define ETH_RXBD_CRC 0x00000002
#define ETH_RXBD_LC 0x00000001
 
#define ETH_TXBD_READY 0x00008000
#define ETH_TXBD_IRQ 0x00004000
#define ETH_TXBD_WRAP 0x00002000
#define ETH_TXBD_PAD 0x00001000
#define ETH_TXBD_CRC 0x00000800
#define ETH_TXBD_UR 0x00000100
#define ETH_TXBD_RL 0x00000008
#define ETH_TXBD_LC 0x00000004
#define ETH_TXBD_DF 0x00000002
#define ETH_TXBD_CS 0x00000001
 
//user defines
#define OWN_MAC_ADDRESS_5 0x55
#define OWN_MAC_ADDRESS_4 0x47
#define OWN_MAC_ADDRESS_3 0x34
#define OWN_MAC_ADDRESS_2 0x22
#define OWN_MAC_ADDRESS_1 0x88
#define OWN_MAC_ADDRESS_0 0x92
 
#define BROADCAST_ADDRESS_5 0xFF
#define BROADCAST_ADDRESS_4 0xFF
#define BROADCAST_ADDRESS_3 0xFF
#define BROADCAST_ADDRESS_2 0xFF
#define BROADCAST_ADDRESS_1 0xFF
#define BROADCAST_ADDRESS_0 0xFF
 
#define HDR_LEN 14
#define CRC_LEN 4
#define BD_SND ( ETH_TXBD_READY | ETH_TXBD_IRQ | ETH_TXBD_WRAP | ETH_TXBD_PAD | ETH_TXBD_CRC )
#define RX_READY ( ETH_RXBD_EMPTY | ETH_RXBD_IRQ | ETH_RXBD_WRAP )
#define TX_READY ( ETH_TXBD_IRQ | ETH_TXBD_WRAP | ETH_TXBD_PAD | ETH_TXBD_CRC )
 
//~user defines
 
 
/sw/drivers/can.h
0,0 → 1,158
 
struct can_type
{
unsigned char rtr;
unsigned char len;
unsigned short identifier;
unsigned char data[8];
};
 
typedef struct can_type can_type;
 
#define CAN_BUF_LEN 10
 
void can_init(void);
void can_irq(void);
 
can_type * can_get(void); //return pointer to first non read received data
 
int can_send_basic(); //return (-1) or length (still processing previous) or asserted
void can_abort(void);
 
//BOTH MODES
#define CAN_MODE 0x00
#define CAN_CMD 0x01
#define CAN_STATUS 0x02
#define IRQ_READ 0x03
 
#define CAN_ACPT_CODE0 0x04 //only writable while in reset mode
#define CAN_ACPT_MASK0 0x05 //only writable while in reset mode
 
#define CAN_BUS_TIMING_0 0x06 //only writable while in reset mode
#define CAN_BUS_TIMING_1 0x07 //only writable while in reset mode
 
#define CAN_BUS_CLKDIV 0x1F //only writable while NOT in reset mode
 
#define CAN_TX_BUF 0x0A //only accessable while NOT in reset mode
#define CAN_TX_LEN 10
 
#define CAN_RX_BUF 0x14 //free read access for basic mode
#define CAN_RX_LEN 10
 
//only accessable while in reset mode
#define CAN_BUS_MODE 0x1F
 
 
//EXTENDED MODE ONLY
//only for extended mode & only accessable while in reset mode
#define CAN_IRQ_EN_EXT 0x04 //also writable if NOT in reset mode
 
//read only regs
#define CAN_ARBIT_LOSS_CNT 0x0B //cnt of arbitration loss
#define CAN_ERROR_CAPTURE_CODE 0x0C
#define CAN_RX_MSG_CNT 0x1D
//~read only regs
 
#define CAN_ERROR_WARN_LIMIT 0x0D
 
#define CAN_RX_ERR_CNT 0x0E
#define CAN_TX_ERR_CNT 0x0F
 
#define CAN_ACPT_CODE0_EXT 0x10 //also writable if NOT in reset mode
#define CAN_ACPT_CODE1 0x11
#define CAN_ACPT_CODE2 0x12
#define CAN_ACPT_CODE3 0x13
 
#define CAN_ACPT_MASK0_EXT 0x14 //also writable if NOT in reset mode
#define CAN_ACPT_MASK1 0x15
#define CAN_ACPT_MASK2 0x16
#define CAN_ACPT_MASK3 0x17
 
#define CAN_TX_BUF_EXT 0x10 //accessable if transmit_buffer_status=1
#define CAN_TX_LEN_EXT 13 //ignores reset mode
 
#define CAN_RX_BUF_EXT 0x10 //read access only in NOT reset mode
#define CAN_RX_LEN_EXT 13
 
 
//BITS DEFINITIONS
 
//BASIC MODE
#define CAN_MODE_RESET 0x01
#define CAN_MODE_LISTEN_ONLY_BASIC 0x20
#define CAN_MODE_RECV_IRQ_EN 0x02
#define CAN_MODE_TX_IRQ_EN 0x04
#define CAN_MODE_ERROR_IRQ_EN 0x08
#define CAN_MODE_OVERRUN_IRQ_EN 0x10
//EXTENDED MODE
#define CAN_MODE_LISTEN_ONLY_EXT 0x02
#define CAN_MODE_SELF_TEST_MODE 0x04
#define CAN_MODE_ACPT_FILTER_MODE 0x08
 
//CMD
#define CAN_CMD_CLR_DATA_OVERRUN 0x08
#define CAN_CMD_RELEASE_BUFFER 0x04
#define CAN_CMD_TX_REQ 0x11
#define CAN_CMD_ABORT_TX 0x02
 
//STATUS
#define CAN_STATUS_NODE_BUS_OFF 0x80
#define CAN_STATUS_ERROR 0x40
#define CAN_STATUS_TX 0x20
#define CAN_STATUS_RX 0x10
#define CAN_STATUS_TX_COMPLETE 0x08
#define CAN_STATUS_TX_BUF 0x04
#define CAN_STATUS_OVERRUN 0x02
#define CAN_STATUS_RX_BUF 0x01
 
//IRQ READ
#define CAN_IRQ_READ_BUS_ERROR 0x80
#define CAN_IRQ_READ_ARBIT_LOST 0x40
#define CAN_IRQ_READ_ERROR_PASSIV 0x20
#define CAN_IRQ_READ_OVERRUN 0x08
#define CAN_IRQ_READ_ERROR 0x04
#define CAN_IRQ_READ_TX 0x02
#define CAN_IRQ_READ_RX 0x01
 
//BUS_TIMING_0
#define CAN_BUS_TIMING_0_SYNC_JMP_SHIFT 6
#define CAN_BUS_TIMING_0_SYNC_JMP 0xC0
#define CAN_BUS_TIMING_0_BAUD_PRESC 0x3F
 
//BUS_TIMING_1
#define CAN_BUS_TIMING_1_TRIPLE_SAMP_SHIFT 7
#define CAN_BUS_TIMING_1_TRIPLE_SAMP 0x80
#define CAN_BUS_TIMING_1_TIME_SEG2_SHIFT 4
#define CAN_BUS_TIMING_1_TIME_SEG2 0x70
#define CAN_BUS_TIMING_1_TIME_SEG1 0x0F
 
//CLKDIV
//only writable while NOT in reset mode
#define CAN_BUS_CLKDIV_MASK 0x07
 
 
//EXTENDED MODE ONLY
//CLKMODE
//only writable while in reset mode
#define CAN_BUS_MODE_CLOCK_OFF 0x08
#define CAN_BUS_MODE_EXTENDED_MODE 0x80
 
//EXTENDED MODE IRQ
#define CAN_IRQ_EN_EXT_BUS_ERROR 0x80
#define CAN_IRQ_EN_EXT_ARBIT_LOST 0x40
#define CAN_IRQ_EN_EXT_ERROR_PASSIV 0x20
#define CAN_IRQ_EN_EXT_OVERRUN 0x08
#define CAN_IRQ_EN_EXT_ERROR 0x04
#define CAN_IRQ_EN_EXT_TX 0x02
#define CAN_IRQ_EN_EXT_RX 0x01
 
//EXTENDED ERROR CODES
#define CAN_ERROR_CAPTURE_CODE_TYPE_SHIFT 6
#define CAN_ERROR_CAPTURE_CODE_TYPE 0xC0
#define CAN_ERROR_CAPTURE_CODE_TYPE_BIT 0x0
#define CAN_ERROR_CAPTURE_CODE_TYPE_FORM 0x1
#define CAN_ERROR_CAPTURE_CODE_TYPE_STUFF 0x2
#define CAN_ERROR_CAPTURE_CODE_TYPE_OTHER 0x3
#define CAN_ERROR_CAPTURE_CODE_DIR 0x40 //1 = TX | 0 = RX
#define CAN_ERROR_CAPTURE_CODE_SEG 0x1F
 
/sw/drivers/tick.c
0,0 → 1,31
#include "../support/spr_defs.h"
#include "../support/support.h"
#include "tick.h"
 
int tick_int;
 
void tick_ack(void)
{
tick_int--;
}
 
void tick_init(void)
{
mtspr(SPR_TTMR, 25000000 & SPR_TTMR_PERIOD); //1s
// mtspr(SPR_TTMR, 125000 & SPR_TTMR_PERIOD); //5ms
mtspr(SPR_TTMR, mfspr(SPR_TTMR) | SPR_TTMR_RT | SPR_TTMR_IE); //restart after match, enable interrupt
mtspr(SPR_TTMR, mfspr(SPR_TTMR) & ~(SPR_TTMR_IP)); //clears interrupt
//set OR1200 to accept exceptions
mtspr(SPR_SR, mfspr(SPR_SR) | SPR_SR_TEE);
tick_int = 0;
}
 
void tick_except(void)
{
tick_int++;
mtspr(SPR_TTMR, mfspr(SPR_TTMR) & ~(SPR_TTMR_IP)); //clears interrupt
}
 
/sw/drivers/uart.c
0,0 → 1,68
#include "../support/board.h"
#include "../support/support.h"
#include "../support/uart.h"
#include "uart.h"
 
void uart_interrupt()
{
char lala;
unsigned char interrupt_id;
interrupt_id = REG8(UART_BASE + UART_IIR);
if ( interrupt_id & UART_IIR_RDI )
{
lala = uart_getc();
uart_putc(lala+1);
}
 
}
 
void uart_print_str(char *p)
{
while(*p != 0) {
uart_putc(*p);
p++;
}
}
 
void uart_print_long(unsigned long ul)
{
int i;
char c;
 
uart_print_str("0x");
for(i=0; i<8; i++) {
 
c = (char) (ul>>((7-i)*4)) & 0xf;
if(c >= 0x0 && c<=0x9)
c += '0';
else
c += 'a' - 10;
uart_putc(c);
}
 
}
 
void uart_print_short(unsigned long ul)
{
int i;
char c;
char flag=0;
 
uart_print_str("0x");
for(i=0; i<8; i++) {
 
c = (char) (ul>>((7-i)*4)) & 0xf;
if(c >= 0x0 && c<=0x9)
c += '0';
else
c += 'a' - 10;
if ((c != '0') || (i==7))
flag=1;
if(flag)
uart_putc(c);
}
 
}
 
/sw/drivers/Makefile
0,0 → 1,25
all: libdrivers.a
 
libdrivers.a: eth.o uart.o interrupts.o can.o i2c.o tick.o
$(OR32_TOOL_PREFIX)-ar cru libdrivers.a eth.o uart.o interrupts.o can.o i2c.o tick.o
$(OR32_TOOL_PREFIX)-ranlib libdrivers.a
 
eth.o: eth.c
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) $? -c -o $@
 
uart.o: uart.c
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) $? -c -o $@
 
interrupts.o: interrupts.c
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) $? -c -o $@
 
can.o: can.c
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) $? -c -o $@
 
i2c.o: i2c.c
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) $? -c -o $@
 
tick.o: tick.c
$(OR32_TOOL_PREFIX)-gcc $(GCC_OPT) $? -c -o $@
 
include ../support/Makefile.inc
/sw/drivers/i2c.c
0,0 → 1,166
#include "../support/board.h"
#include "../support/support.h"
#include "i2c.h"
 
int i2c_rd_done, i2c_wr_done;
 
int i2c_pending_write;
 
int i2c_rd_ptr, i2c_wr_ptr;
 
int i2c_buf_overflow;
i2c_type i2c_data[I2C_BUF_LEN];
 
unsigned char start, pointer_write, write_hbyte, write_lbyte, read_hbyte, read_lbyte;
unsigned char cmd_list[5];
unsigned char dat_list[5];
int i2c_index;
int i2c_end;
 
i2c_type * i2c_get(void)
{
if ( !i2c_rd_done )
return NULL;
 
i2c_rd_done--;
 
int tmp;
tmp = i2c_rd_ptr;
 
if (i2c_rd_ptr < I2C_BUF_LEN-1)
i2c_rd_ptr++;
else
i2c_rd_ptr = 0;
 
return &i2c_data[tmp];
}
 
void i2c_init(void)
{
REG8(I2C_BASE+I2C_PRESC_HI) = 0x00;
REG8(I2C_BASE+I2C_PRESC_LO) = 49; //100kHz
REG8(I2C_BASE+I2C_CTR) = I2C_CTR_EN | I2C_CTR_IRQ_EN;
i2c_rd_done = 0;
i2c_wr_done = 0;
i2c_index = 0;
i2c_wr_ptr = 0;
i2c_rd_ptr = 0;
i2c_buf_overflow = 0;
}
 
void i2c_set_ack_lvl(int ack_lvl, int final_ack_lvl)
{
int ack, final_ack;
 
ack = ( ack_lvl ) ? I2C_CR_NACK : I2C_CR_ACK;
final_ack = ( final_ack_lvl ) ? I2C_CR_NACK : I2C_CR_ACK;
 
start = I2C_CR_STA | I2C_CR_WR | ack;
pointer_write = I2C_CR_WR | ack;
write_hbyte = I2C_CR_WR | ack;
write_lbyte = I2C_CR_WR | I2C_CR_STO | final_ack;
read_hbyte = I2C_CR_RD | ack;
read_lbyte = I2C_CR_RD | I2C_CR_STO | final_ack;
}
 
void i2c_byte_transfer(void)
{
if ( i2c_index > 0 )
if ( cmd_list[i2c_index-1] == read_hbyte )
i2c_data[i2c_wr_ptr].data = (REG8(I2C_BASE+I2C_RXR) << 8) & 0xFF00;
REG8(I2C_BASE+I2C_TXR) = dat_list[i2c_index];
REG8(I2C_BASE+I2C_CR) = cmd_list[i2c_index];
 
i2c_index++;
}
 
void i2c_irq(void)
{
REG8(I2C_BASE+I2C_CR) = I2C_CR_CLR_IRQ;
if (i2c_index <= i2c_end )
i2c_byte_transfer();
else
{
if ( cmd_list[i2c_index-1] == read_lbyte )
i2c_data[i2c_wr_ptr].data |= REG8(I2C_BASE+I2C_RXR);
 
i2c_index = 0;
 
if ( i2c_pending_write )
i2c_wr_done = 1;
else
{
if (i2c_wr_ptr < I2C_BUF_LEN-1)
i2c_wr_ptr++;
else
i2c_wr_ptr = 0;
 
if (i2c_wr_ptr == i2c_rd_ptr+1)
{
i2c_rd_done = 1;
i2c_buf_overflow++;
}
else
i2c_rd_done++;
}
}
}
 
int i2c_trans(i2c_mode * mode, i2c_type * data)
{
if ( i2c_index != 0 ) //if previous command not fully processed, bail out
return -1;
 
i2c_wr_done = 0;
 
int i = 0;
 
if ( mode->ptr_set || mode->read_write ) //start conditions with pointer set: (write always set ptr)
{
dat_list[i] = (data->address << 1) & I2C_TXR_ADR;
dat_list[i] |= I2C_TXR_W;
cmd_list[i++] = start;
 
dat_list[i] = data->pointer;
cmd_list[i++] = pointer_write;
if ( !mode->read_write ) //REstart for read, NO-REstart for write
{
dat_list[i] = (data->address << 1) & I2C_TXR_ADR;
dat_list[i] |= I2C_TXR_R;
cmd_list[i++] = start;
}
}
else //start conditions with NO pointer set (read only): ONE start
{
dat_list[i] = (data->address << 1) & I2C_TXR_ADR;
dat_list[i] |= I2C_TXR_R;
cmd_list[i++] = start;
}
 
if ( mode->byte_word ) //read/write high byte
{
dat_list[i] = data->data >> 8;
cmd_list[i++] = (mode->read_write) ? write_hbyte : read_hbyte;
}
dat_list[i] = data->data; //read/write low byte
cmd_list[i] = (mode->read_write) ? write_lbyte : read_lbyte;
 
i2c_end = i;
 
if ( !mode->read_write ) //set data to 0 for read, avoid or implications ((short)data |= byte)
{
i2c_data[i2c_wr_ptr] = *data;
i2c_data[i2c_wr_ptr].data = 0x0000;
}
 
i2c_pending_write = mode->read_write;
 
i2c_index = 0;
i2c_byte_transfer();
 
return mode->read_write+1;
}
 

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