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74b8280d800b285bb9f2ff4b4080fea49fc104ef
RTLPlayground/rtlplayground.c
T
René van Dorst 74b8280d80 gpio: SOC only has 64 gpio not 96. 
Remove BANK_A
Rename BANK_B to GPIO_00_31
Rename BACK_C to GPIO_32_63

Added also _INPUT, _DIRECTIOn registers
2025-09-06 17:04:25 +02:00

1768 lines
44 KiB
C
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#include <8051.h>
#include <stdint.h>
// #define REGDBG 1
// #define RXTXDBG 1
#include "rtl837x_sfr.h"
#include "rtl837x_regs.h"
#include "rtl837x_common.h"
#include "rtl837x_flash.h"
#include "rtl837x_phy.h"
#include "rtl837x_port.h"
#include "rtl837x_stp.h"
#include "cmd_parser.h"
#include "uip/uipopt.h"
#include "uip/uip.h"
#include "uip/uip_arp.h"
#define SYS_TICK_HZ 100
#define SERIAL_BAUD_RATE 115200
/* All RTL839x switches have an external 25MHz Oscillator,
VALID RTL8372/3 CPU frequencies found in switches are:
0x07735940 = 125,000,000
0x03b9aca0 = 62,500,000
0x01dcd650 = 31,250,000
0x013d6200 = 20,800,000
For the following frequencies, divider settings are known
and can be selected on all known HW (Register 0x6040)
*/
#define CLOCK_HZ 125000000
//#define CLOCK_HZ 20800000
// Derive the divider settings for the internal clock
#if CLOCK_HZ == 20800000
#define CLOCK_DIV 3
#elif CLOCK_HZ == 31250000
#define CLOCK_DIV 2
#elif CLOCK_HZ == 62500000
#define CLOCK_DIV 1
#elif CLOCK_HZ == 125000000
#define CLOCK_DIV 0
#endif
__xdata uint8_t idle_ready;
__code uint8_t ownIP[] = { 192, 168, 2, 2 };
__code struct uip_eth_addr uip_ethaddr = {{ 0x1c, 0x2a, 0xa3, 0x23, 0x00, 0x02 }};
__code uint8_t gatewayIP[] = { 192, 168, 2, 22};
__code uint8_t netmask[] = { 255, 255, 255, 0};
__xdata uint8_t isRTL8373;
volatile __xdata uint32_t ticks;
volatile __xdata uint8_t sec_counter;
volatile __xdata uint16_t sleep_ticks;
// Buffer for serial input, SBUF_SIZE must be power of 2 < 256
__xdata volatile uint8_t sbuf_ptr;
__xdata uint8_t sbuf[SBUF_SIZE];
__xdata uint8_t sfr_data[4];
extern __xdata uint8_t cmd_buffer[SBUF_SIZE];
__code uint8_t * __code greeting = "\nA minimal prompt to explore the RTL8372:\n";
__code uint8_t * __code hex = "0123456789abcdef";
__xdata uint8_t flash_buf[256];
// NIC buffers for packet RX/TX
__xdata uint8_t rx_headers[16]; // Packet header(s) on RX
__xdata uint8_t uip_buf[UIP_CONF_BUFFER_SIZE+2];
__xdata uint16_t rx_packet_vlan;
__xdata uint8_t tx_seq;
__xdata uint8_t minPort;
__xdata uint8_t maxPort;
__xdata uint8_t nSFPPorts;
__xdata uint8_t cpuPort;
__code uint16_t bit_mask[16] = {
0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000, 0x8000
};
__xdata uint8_t was_offline;
__xdata uint8_t linkbits_last[4];
__xdata uint8_t sfp_pins_last;
#define ETHERTYPE_OFFSET (12 + VLAN_TAG_SIZE + RTL_TAG_SIZE)
void isr_timer0(void) __interrupt(1)
{
TR0 = 0; // Stop timer 0
TH0 = (0x10000 - (CLOCK_HZ / SYS_TICK_HZ / 32)) >> 8;
TL0 = (0x10000 - (CLOCK_HZ / SYS_TICK_HZ / 32)) % 0xff;
ticks++;
if (sleep_ticks > 0)
sleep_ticks--;
sec_counter++;
TR0 = 1; // Re-start timer 0
}
void isr_serial(void) __interrupt(4)
{
if (RI == 1) {
sbuf[sbuf_ptr] = SBUF;
sbuf_ptr = (sbuf_ptr + 1) & (SBUF_SIZE - 1);
RI = 0;
}
}
void write_char(char c)
{
do {
} while (TI == 0);
TI = 0;
if (c =='\n') {
SBUF = '\r';
do {
} while (TI == 0);
TI = 0;
}
SBUF = c;
}
void print_string(__code char *p)
{
while (*p)
write_char(*p++);
}
void print_string_x(__xdata char *p)
{
while (*p)
write_char(*p++);
}
void memcpy(__xdata void * __xdata dst, __xdata const void * __xdata src, uint16_t len)
{
__xdata uint8_t *d = dst;
__xdata const uint8_t *s = src;
while (len--)
*d++ = *s++;
}
void memcpyc(register __xdata uint8_t *dst, register __code uint8_t *src, register uint16_t len)
{
while (len--)
*dst++ = *src++;
}
void memset(register __xdata uint8_t *dst, register __xdata uint8_t v, register uint8_t len)
{
while (len--)
*dst++ = v;
}
uint16_t strtox(register __xdata uint8_t *dst, register __code const char *s)
{
__xdata uint8_t *b = dst;
while (*s)
*dst++ = *s++;
*dst = 0;
return dst - b;
}
uint16_t strlen(register __code const char *s)
{
uint16_t l = 0;
while (s[l])
l++;
return l;
}
uint16_t strlen_x(register __xdata const char *s)
{
uint16_t l = 0;
while (s[l])
l++;
write_char(';');
print_short(l);
write_char(';');
return l;
}
void print_short(uint16_t a)
{
print_string("0x");
for (signed char i = 12; i >= 0; i -= 4) {
write_char(hex[(a >> i) & 0xf]);
}
}
void print_long(__xdata uint32_t a)
{
print_string("0x");
for (signed char i = 28; i >= 0; i -= 4) {
write_char(hex[(a >> i) & 0xf]);
}
}
void print_byte(uint8_t a)
{
write_char(hex[(a >> 4) & 0xf]);
write_char(hex[a & 0xf]);
}
/*
* External IRQ 0 Service Routine: Called on link change?
* Note that all registers are being put on the STACK because of calling a subroutine
*/
void isr_ext0(void) __interrupt(0)
{
EX0 = 0; // Disable interrupt for the moment
write_char('X');
IT0 = 1; // Trigger on falling edge of external interrupt
EX0 = 1; // Re-enable interrupt
}
/*
* External IRQ 1 Service Routine, triggered by the NIC recieving a packet
* Note that all registers are being put on the STACK because of calling
* a subroutine (write_char), we shold do better...
*/
void isr_ext1(void) __interrupt(2)
{
// This flag should only be reset after all packets have been read
EX1 = 0;
write_char('Y');
EX1 = 1;
}
/*
* External IRQ 2 Service Routine
* Note that all registers are being put on the STACK because of calling a subroutine
*/
void isr_ext2(void) __interrupt(8)
{
EXIF &= 0xef; // Clear IRQ flag (bit 7) in EXIF
write_char('Z');
PCON |= 1; // Enter Idle mode until interrupt occurs
}
/*
* External IRQ 3 Service Routine
* Note that all registers are being put on the STACK because of calling a subroutine
*/
void isr_ext3(void) __interrupt(9)
{
EXIF &= 0xdf; // Clear IRQ flag (bit 6) in EXIF
write_char('W');
}
void setup_timer0(void)
{
TMOD = 0x11; // Timer 1: Mode 1, Timer 0: Mode 1, i.e. 16 bit counters, no auto-reload
// The TH0 registers contain the high/low byte that is loaded into
// timer0 when T0 overflows to 0x10000
TH0 = (0x10000 - (CLOCK_HZ / SYS_TICK_HZ / 32)) >> 8;
TL0 = (0x10000 - (CLOCK_HZ / SYS_TICK_HZ / 32)) % 0xff;
TCON = 0x10; // Start timer 0
CKCON &= 0xc7;
ET0 = 1; // Enable timer interrupts
}
void reg_read(uint16_t reg_addr)
{
SFR_REG_ADDR_U16 = reg_addr;
SFR_EXEC_GO = SFR_EXEC_READ_REG;
do {
} while (SFR_EXEC_STATUS != 0);
/* The result is now in SFR A4, A5, A6, A7 */
}
void reg_read_m(uint16_t reg_addr)
{
#ifdef REGDBG
if (EA) { write_char('r'); print_byte(reg_addr >> 8); print_byte(reg_addr); write_char(':'); }
#endif
SFR_REG_ADDR_U16 = reg_addr;
SFR_EXEC_GO = SFR_EXEC_READ_REG;
do {
} while (SFR_EXEC_STATUS != 0);
sfr_data[0] = SFR_DATA_24;
sfr_data[1] = SFR_DATA_16;
sfr_data[2] = SFR_DATA_8;
sfr_data[3] = SFR_DATA_0;
#ifdef REGDBG
if (EA) { print_byte(sfr_data[0]); print_byte(sfr_data[1]); print_byte(sfr_data[2]); print_byte(sfr_data[3]); write_char(' '); }
#endif
}
void reg_write(uint16_t reg_addr)
{
/* Data to write must be in SFR A4, A5, A6, A7 */
SFR_REG_ADDR_U16 = reg_addr;
SFR_EXEC_GO = SFR_EXEC_WRITE_REG;
do {
} while (SFR_EXEC_STATUS != 0);
}
void reg_write_m(uint16_t reg_addr)
{
#ifdef REGDBG
if (EA) {
write_char('R'); print_byte(reg_addr >> 8); print_byte(reg_addr); write_char('-');
print_byte(sfr_data[0]); print_byte(sfr_data[1]); print_byte(sfr_data[2]); print_byte(sfr_data[3]); write_char(' ');
}
#endif
SFR_REG_ADDR_U16 = reg_addr;
SFR_DATA_24 = sfr_data[0] ;
SFR_DATA_16 = sfr_data[1];
SFR_DATA_8 = sfr_data[2];
SFR_DATA_0 = sfr_data[3];
SFR_EXEC_GO = SFR_EXEC_WRITE_REG;
do {
} while (SFR_EXEC_STATUS != 0);
}
/*
* This sets a bit in the 32bit wide switch register reg_addr
*/
void reg_bit_set(uint16_t reg_addr, char bit)
{
uint8_t bit_mask = 1 << (bit & 0x7);
bit >>= 3;
reg_read_m(reg_addr);
sfr_data[3-bit] |= bit_mask;
reg_write_m(reg_addr);
}
/*
* This sets a bit in the 32bit wide switch register reg_addr
*/
void reg_bit_clear(uint16_t reg_addr, char bit)
{
uint8_t bit_mask = 1 << (bit & 0x7);
bit >>= 3;
reg_read_m(reg_addr);
bit_mask = ~bit_mask;
sfr_data[3-bit] &= bit_mask;
reg_write_m(reg_addr);
}
/*
* This masks the sfr data fields, first &-ing with ~mask, the setting the bits in set
*/
void sfr_mask_data(uint8_t n, uint8_t mask, uint8_t set)
{
uint8_t b = sfr_data[3-n];
b &= ~mask;
b |= set;
sfr_data[3-n] = b;
}
/*
* Transfer Network Interface RX data from the ASIC to the 8051 XMEM
* data will be stored in the rx_header structure
* len is the length of data to be transferred
*/
void nic_rx_header(uint16_t ring_ptr)
{
uint16_t buffer = (uint16_t) &rx_headers[0];
SFR_NIC_DATA_U16LE = buffer;
SFR_NIC_RING_U16LE = ring_ptr;
SFR_NIC_CTRL = 1;
do { } while (SFR_NIC_CTRL != 0);
}
/*
* Transfer Network Interface RX data from the ASIC to the 8051 XMEM
* the description of the packet must be in the rx_headers data structure
* data will be returned in the xmem buffer points to
* ring_ptr is the current position of the RX Ring on the ASIC side
*/
void nic_rx_packet(register uint16_t buffer, register uint16_t ring_ptr)
{
SFR_NIC_DATA_U16LE = buffer;
SFR_NIC_RING_U16LE = ring_ptr;
uint16_t len = (((uint16_t)rx_headers[5]) << 8) | rx_headers[4];
len += 7;
len >>= 3;
#ifdef RXTXDBG
print_string(" len: ");
print_short(len);
#endif
SFR_NIC_CTRL = len;
do { } while (SFR_NIC_CTRL != 0);
}
/*
* Transfers data in XMEM to the ASIC for transmission by the nic
*/
void nic_tx_packet(uint16_t ring_ptr)
{
// uint16_t buffer = (uint16_t) tx_buf;
uint16_t buffer = (uint16_t) uip_buf + VLAN_TAG_SIZE;
SFR_NIC_DATA_U16LE = buffer;
ring_ptr <<= 3;
ring_ptr |= 0x8000;
SFR_NIC_RING_U16LE = ring_ptr;
uint16_t len = (((uint16_t)uip_buf[VLAN_TAG_SIZE + 5]) << 8) | uip_buf[VLAN_TAG_SIZE + 4];
len += 0xf;
len >>= 3;
SFR_NIC_CTRL = len;
do { } while (SFR_NIC_CTRL != 0);
}
/* Read flash using the MMIO capabilities of the DW8051 core
* Bank is < 0x3f and is the MSB
* addr gives the address in the bank
* Note that the address in the flash memory is not simply 0xbbaddr, because
* the size of a bank is merely 0xc000.
*/
uint8_t read_flash(uint8_t bank, __code uint8_t *addr)
{
uint8_t v;
uint8_t current_bank = PSBANK;
PSBANK = bank;
v = *addr;
PSBANK = current_bank;
return v;
}
void print_long_x(__xdata uint8_t v[])
{
write_char('0'); write_char('x');
for (uint8_t i=0; i < 4; i++) {
write_char(hex[v[i] >> 4]);
write_char(hex[v[i] & 0xf]);
}
}
/*
* Read a SerDes register in the SoC
* Input must be: sds_id = 0/1, page < 128, reg <= 0xff
* The result is in SFR A6 and A7 (SFR_DATA_8, SFR_DATA_0)
*/
void sds_read(uint8_t sds_id, uint8_t page, uint8_t reg)
{
#ifdef REGDBG
print_string("q"); print_byte(sds_id); print_byte(page); print_byte(reg);
#endif
SFR_93 = reg; // 93
SFR_94 = page << 1 | sds_id; // 94
SFR_EXEC_GO = SFR_EXEC_READ_SDS;
do {
} while (SFR_EXEC_STATUS != 0);
#ifdef REGDBG
write_char(':'); print_byte(SFR_DATA_8); print_byte(SFR_DATA_0); write_char(' ');
#endif
}
/*
* Write a SerDes register in the SoC
* Input must be: sds_id = 0/1, page < 128, reg <= 0xff
* The value written must be in SFR A6 and A7 (SFR_DATA_8, SFR_DATA_0)
*/
void sds_write_v(uint8_t sds_id, uint8_t page, uint8_t reg, uint16_t v)
{
#ifdef REGDBG
print_string("Q"); print_byte(sds_id); print_byte(page); print_byte(reg);
write_char(':'); print_byte(v >> 8); print_byte(v); write_char(' ');
#endif
SFR_DATA_U16 = v;
SFR_93 = reg;
SFR_94 = page << 1 | sds_id;
SFR_EXEC_GO = SFR_EXEC_WRITE_SDS;
do {
} while (SFR_EXEC_STATUS != 0);
}
void print_sfr_data(void)
{
write_char('0');
write_char('x');
write_char(hex[sfr_data[0] >> 4]);
write_char(hex[sfr_data[0] & 0xf]);
write_char(hex[sfr_data[1] >> 4]);
write_char(hex[sfr_data[1] & 0xf]);
write_char(hex[sfr_data[2] >> 4]);
write_char(hex[sfr_data[2] & 0xf]);
write_char(hex[sfr_data[3] >> 4]);
write_char(hex[sfr_data[3] & 0xf]);
}
void print_phy_data(void)
{
write_char('0');
write_char('x');
write_char(hex[SFR_DATA_8 >> 4]);
write_char(hex[SFR_DATA_8 & 0xf]);
write_char(hex[SFR_DATA_0 >> 4]);
write_char(hex[SFR_DATA_0 & 0xf]);
}
void print_reg(uint16_t reg)
{
reg_read_m(reg);
print_sfr_data();
}
void print_sds_reg(uint8_t sds_id, uint8_t page, uint8_t reg)
{
sds_read(sds_id, page, reg);
print_phy_data();
}
char cmp_4(__xdata uint8_t a[], __xdata uint8_t b[])
{
for (uint8_t i = 0; i < 4; i++) {
if (a[i] == b[i])
continue;
if (a[i] < b[i])
return -1;
else
return 1;
}
return 0;
}
void cpy_4(__xdata uint8_t dest[], __xdata uint8_t source[])
{
for (uint8_t i = 0; i < 4; i++)
dest[i] = source[i];
}
void sds_config_mac(uint8_t sds, uint8_t mode)
{
reg_read_m(RTL837X_REG_SDS_MODES);
sfr_data[0] = 0;
sfr_data[1] = 0;
switch (sds) {
case 0:
sfr_mask_data(0, 0x1f, mode);
break;
case 1:
sfr_mask_data(0, 0xe0, mode << 5);
sfr_mask_data(1, 0x03, mode >> 3);
break;
case 2:
sfr_mask_data(1, 0xfc, 0x02 << 2);
}
if (isRTL8373) // Set 3rd SERDES Mode to 0x2 for RTL8224
sfr_mask_data(1, 0xfc, 0x02 << 2);
else
sfr_data[2] &= 0x03;
reg_write_m(RTL837X_REG_SDS_MODES);
print_string("\nRTL837X_REG_SDS_MODES: ");
print_reg(RTL837X_REG_SDS_MODES);
print_string("\n");
}
// Delay for given number of ticks without doing housekeeping
void delay(uint16_t t)
{
sleep_ticks = t;
while (sleep_ticks > 0)
PCON |= 1;
}
/*
* Configure the SerDes of the SoC for a particular mode
* to connect to an SFP module or a PHY
* Valid modes are SDS_10GR, SDS_QXGMII, SDS_HISGMII, SDS_HSG, SDS_SGMII and SDS_1000BX_FIBER
* The SerDes ID may be 0 or 1 for RTL8272 and 0-2 for RTL8373
*/
void sds_config(uint8_t sds, uint8_t mode)
{
print_string("sds_config sds: "); print_byte(sds); print_string(", mode: "); print_byte(mode); write_char('\n');
sds_config_mac(sds, mode);
if (mode == SDS_10GR || mode == SDS_QXGMII) // 10G Fiber, 10G connection to RTL8224
sds_write_v(sds, 0x21, 0x10, 0x4480); // Q002110:6480
else
sds_write_v(sds, 0x21, 0x10, 0x6480); // Q002110:6480
sds_write_v(sds, 0x21, 0x13, 0x0400); // Q002113:0400
sds_write_v(sds, 0x21, 0x18, 0x6d02); // Q002118:6d02
sds_write_v(sds, 0x21, 0x1b, 0x424e); // Q00211b:424e
sds_write_v(sds, 0x21, 0x1d, 0x0002); // Q00211d:0002
sds_write_v(sds, 0x36, 0x1c, 0x1390); // Q00361c:1390
sds_write_v(sds, 0x36, 0x14, 0x003f); // Q003614:003f
uint8_t page = 0;
uint16_t v = 0;
print_string("\nTrying to set SDS mode to 0x");
print_byte(mode);
print_string("\n");
switch (mode) {
case SDS_SGMII:
case SDS_1000BX_FIBER:
v = 0x0300;
page = 0x24;
break;
case SDS_HISGMII:
case SDS_HSG:
v = 0x0200;
page = 0x28;
break;
case SDS_10GR:
case SDS_QXGMII:
v = 0x0200;
page = 0x2e;
break;
default:
print_string("Error in SDS Mode\n");
return;
}
sds_write_v(sds, 0x36, 0x10, v); // Q003610:0200
if (page == 0x2e) { // 10G Fiber
sds_write_v(sds, page, 0x04, 0x0080); // Q012e04:0080
sds_write_v(sds, page, 0x06, 0x0408); // Q012e06:0408
sds_write_v(sds, page, 0x07, 0x020d); // Q012e07:020d
sds_write_v(sds, page, 0x09, 0x0601); // Q012e09:0601
sds_write_v(sds, page, 0x0b, 0x222c); // Q012e0b:222c
sds_write_v(sds, page, 0x0c, 0xa217); // Q012e0c:a217
sds_write_v(sds, page, 0x0d, 0xfe40); // Q012e0d:fe40
sds_write_v(sds, page, 0x15, 0xf5c1); // Q012e15:f5c1
} else {
sds_write_v(sds, page, 0x04, 0x0080); // Q002804:0080
sds_write_v(sds, page, 0x07, 0x1201); // Q002807:1201
sds_write_v(sds, page, 0x09, 0x0601); // Q002809:0601
sds_write_v(sds, page, 0x0b, 0x232c); // Q00280b:232c
sds_write_v(sds, page, 0x0c, 0x9217); // Q00280c:9217
sds_write_v(sds, page, 0x0f, 0x5b50); // Q00280f:5b50
sds_write_v(sds, page, 0x15, 0xe7c1); // Q002815:e7f1 BUG !
}
sds_write_v(sds, page, 0x16, 0x0443); // Q002816:0443 / Q012e16:0443
sds_write_v(sds, page, 0x1d, 0xabb0); // Q00281d:abb0 / Q012e1d:abb0
sds_write_v(sds, 0x06, 0x12, 0x5078); // Q000612:5078
sds_write_v(sds, 0x07, 0x06, 0x9401); // Q000706:9401
sds_write_v(sds, 0x07, 0x08, 0x9401); // Q000708:9401
sds_write_v(sds, 0x07, 0x0a, 0x9401); // Q00070a:9401
sds_write_v(sds, 0x07, 0x0c, 0x9401); // Q00070c:9401
sds_write_v(sds, 0x1f, 0x0b, 0x0003); // Q001f0b:0003
sds_write_v(sds, 0x06, 0x03, 0xc45c); // Q000603:c45c
if (mode != SDS_QXGMII)
sds_write_v(sds, 0x06, 0x1f, 0x2100); // Q00061f:2100
if (sds == 0 && mode == SDS_1000BX_FIBER) {
sds_write_v(sds, 0x02, 0x04, 0x0020); // Q000204:0020
sds_write_v(sds, 0x00, 0x02, 0x73d0); // Q000002:73d0
sds_write_v(sds, 0x00, 0x04, 0x074d); // Q000004:074d
sds_write_v(sds, 0x20, 0x04, 0x0000); // Q002000:0000
sds_write_v(sds, 0x1f, 0x00, 0x0000); // Q001f00:0000
}
}
/*
* Read a register of the EEPROM via I2C
*/
uint8_t sfp_read_reg(uint8_t slot, uint8_t reg)
{
if (slot == 0) {
reg_read_m(RTL837X_REG_I2C_CTRL);
sfr_mask_data(1, 0xff, 0x72);
reg_write_m(RTL837X_REG_I2C_CTRL);
} else {
reg_read_m(RTL837X_REG_I2C_CTRL);
sfr_mask_data(1, 0xff, 0x6e);
reg_write_m(RTL837X_REG_I2C_CTRL);
}
REG_WRITE(RTL837X_REG_I2C_IN, 0, 0, 0, reg);
// Execute I2C Read
reg_bit_set(RTL837X_REG_I2C_CTRL, 0);
// Wait for execution to finish
do {
reg_read_m(RTL837X_REG_I2C_CTRL);
} while (sfr_data[3] & 0x1);
reg_read_m(RTL837X_REG_I2C_OUT);
return sfr_data[3];
}
/*
* Adds TX Header to uip_buf and calls nic_tx_packet to send the packet
* over the wire
*/
void tcpip_output(void)
{
// Add TX-TAG
uip_buf[VLAN_TAG_SIZE] = tx_seq++;
uip_buf[VLAN_TAG_SIZE + 1] = 0x07; // Enable all checksums
uip_buf[VLAN_TAG_SIZE + 5] = uip_len >> 8;
uip_buf[VLAN_TAG_SIZE + 4] = uip_len;
uip_buf[VLAN_TAG_SIZE + 2] = uip_buf[VLAN_TAG_SIZE + 3] = 0;
uip_buf[VLAN_TAG_SIZE + 6] = uip_buf[VLAN_TAG_SIZE + 7] = 0;
reg_read_m(0x7890);
uint16_t ring_ptr = ((uint16_t)sfr_data[2]) << 8;
ring_ptr |= sfr_data[3];
print_string("TX: \n");
for (uint8_t i = 0; i < 120; i++) {
print_byte(uip_buf[i]);
write_char(' ');
}
write_char('\n');
// Move data over from xmem buffer to ASIC side using DMA
nic_tx_packet(ring_ptr);
reg_read_m(0x7884); // actual bytes sent, for now we assume everything worked
// Do actual TX of data on ASIC side
sfr_data[0] = sfr_data[1] = sfr_data[2] = 0;
sfr_data[3] = 0x1;
reg_write_m(0x7850);
}
void handle_rx(void)
{
reg_read_m(RTL837X_REG_RX_AVAIL);
if (sfr_data[2] != 0 || sfr_data[3] != 0) {
reg_read_m(RTL837X_REG_RX_RINGPTR);
uint16_t ring_ptr = ((uint16_t)sfr_data[2]) << 8;
ring_ptr |= sfr_data[3];
ring_ptr <<= 3;
nic_rx_header(ring_ptr);
#ifdef RXTXDBG
__xdata uint8_t *ptr = rx_headers;
print_string("RX on port "); print_byte(rx_headers[3] & 0xf);
print_string(": ");
for (uint8_t i = 0; i < 8; i++) {
print_byte(*ptr++);
write_char(' ');
}
#endif
nic_rx_packet((uint16_t) &uip_buf[0], ring_ptr + 8);
#ifdef RXTXDBG
print_string("\n<< ");
ptr = &uip_buf[0];
for (uint8_t i = 0; i < 80; i++) {
print_byte(*ptr++);
write_char(' ');
}
#endif
sfr_data[0] = sfr_data[1] = sfr_data[2] = 0;
sfr_data[3] = 0x1;
reg_write_m(RTL837X_REG_RX_DONE);
uip_len = (((uint16_t)rx_headers[5]) << 8) | rx_headers[4];
// write_char('>'); print_byte(uip_buf[ETHERTYPE_OFFSET]); write_char('<');
// write_char('>'); print_byte(uip_buf[ETHERTYPE_OFFSET + 1]); write_char('<');
// Check for ARP packet
rx_packet_vlan = uip_buf[12 + RTL_TAG_SIZE + 2] & 0xf;
rx_packet_vlan <<= 8;
rx_packet_vlan |= uip_buf[12 + RTL_TAG_SIZE + 3];
#ifdef RXTXDBG
print_string(" RX-VLAN: "); print_short(rx_packet_vlan); write_char('\n');
#endif
if (uip_buf[0] == 0x01 && uip_buf[1] == 0x80 && uip_buf[2] == 0xc2 // STP packet?
&& uip_buf[3] == 0x00 && uip_buf[4] == 0x00 && uip_buf[5] == 0x00) {
print_string("STP: \n");
for (uint8_t i = 0; i < 80; i++) {
print_byte(uip_buf[i]);
write_char(' ');
}
write_char('\n');
for (uint8_t i = minPort; i <=maxPort; i++ ) {
stp_cnf_send(i);
tcpip_output();
}
} else if (uip_buf[ETHERTYPE_OFFSET] == 0x08 && uip_buf[ETHERTYPE_OFFSET + 1] == 0x06) { // ARP?
uip_arp_arpin();
if (uip_len) {
tcpip_output();
}
} else if (uip_buf[ETHERTYPE_OFFSET] == 0x08 && uip_buf[ETHERTYPE_OFFSET + 1] == 0x00) {
uip_arp_ipin();
uip_input();
if (uip_len) {
// Add ethernet frame
uip_arp_out();
tcpip_output();
}
}
}
}
void handle_tx(void)
{
for(uint8_t i = 0; i < UIP_CONNS; i++) {
uip_periodic(i);
if(uip_len > 0) {
write_char('.'); print_short(i);
uip_arp_out();
tcpip_output();
}
}
}
static inline uint8_t sfp_rate_to_sds_config(register uint8_t rate)
{
if (rate == 0xd)
return SDS_1000BX_FIBER;
if (rate == 0x1f) // Ethernet 2.5 GBit
return SDS_HSG;
if (rate > 0x65 && rate < 0x70)
return SDS_10GR;
return 0xff;
}
void sfp_print_info(uint8_t sfp)
{
for (uint8_t i = 20; i < 60; i++) {
uint8_t c = sfp_read_reg(sfp, i);
if (c)
write_char(c);
}
print_string("\n");
}
void handle_sfp(void)
{
reg_read_m(RTL837X_REG_GPIO_00_31_INPUT);
if ((sfp_pins_last & 0x1) && (!(sfr_data[0] & 0x40))) {
sfp_pins_last &= ~0x01;
print_string("\n<MODULE INSERTED> ");
// Read Reg 11: Encoding, see SFF-8472 and SFF-8024
// Read Reg 12: Signalling rate (including overhead) in 100Mbit: 0xd: 1Gbit, 0x67:10Gbit
delay(100); // Delay, because some modules need time to wake up
uint8_t rate = sfp_read_reg(0, 12);
print_string("Rate: "); print_byte(rate); // Normally 1, but 0 for DAC, can be ignored?
print_string(" Encoding: "); print_byte(sfp_read_reg(0, 11));
print_string("\n");
print_string("\n");
sfp_print_info(0);
sds_config(1, sfp_rate_to_sds_config(rate));
}
if ((!(sfp_pins_last & 0x1)) && (sfr_data[0] & 0x40)) {
sfp_pins_last |= 0x01;
print_string("\n<MODULE REMOVED>\n");
}
reg_read_m(RTL837X_REG_GPIO_32_63_INPUT);
if ((sfp_pins_last & 0x2) && (!(sfr_data[3] & 0x20))) {
sfp_pins_last &= ~0x02;
print_string("\n<SFP-RX OK>\n");
}
if ((!(sfp_pins_last & 0x2)) && (sfr_data[3] & 0x20)) {
sfp_pins_last |= 0x02;
print_string("\n<SFP-RX LOS>\n");
}
reg_read_m(RTL837X_REG_GPIO_32_63_INPUT);
if ((sfp_pins_last & 0x10) && (!(sfr_data[1] & 0x04))) {
sfp_pins_last &= ~0x10;
print_string("\n<MODULE 2 INSERTED> ");
// Read Reg 11: Encoding, see SFF-8472 and SFF-8024
// Read Reg 12: Signalling rate (including overhead) in 100Mbit: 0xd: 1Gbit, 0x67:10Gbit
delay(100); // Delay, because some modules need time to wake up
uint8_t rate = sfp_read_reg(1, 12);
print_string("Rate: "); print_byte(rate); // Normally 1, but 0 for DAC, can be ignored?
print_string(" Encoding: "); print_byte(sfp_read_reg(1, 11));
print_string("\n");
sfp_print_info(1);
sds_config(0, sfp_rate_to_sds_config(rate));
}
if ((!(sfp_pins_last & 0x10)) && (sfr_data[1] & 0x04)) {
sfp_pins_last |= 0x10;
print_string("\n<MODULE 2 REMOVED>\n");
}
}
//
// An idle function that sleeps for 1 tick and does all the house-keeping
//
void idle(void)
{
PCON |= 1;
if (sec_counter >= 60) {
sec_counter -= 60;
reg_read_m(RTL837X_REG_SEC_COUNTER);
uint8_t v = sfr_data[3];
#ifdef DEBUG
print_string(" sec_counter: "); print_byte(v);
#endif
v++;
sfr_data[3] = v;
if (!v) {
v = sfr_data[2];
v++;
sfr_data[2] = v;
if (!v) {
v = sfr_data[1];
v++;
sfr_data[1] = v;
if (!v) {
v = sfr_data[0];
v++;
sfr_data[0] = v;
}
}
}
reg_write_m(RTL837X_REG_SEC_COUNTER);
reg_read_m(RTL837X_REG_SEC_COUNTER);
#ifdef DEBUG
print_string(" >>: ");
print_long_x(sfr_data);
#endif
}
reg_read_m(RTL837X_REG_LINKS);
if (!isRTL8373 && cmp_4(sfr_data, linkbits_last)) {
print_string("\n<new link: ");
print_long_x(sfr_data);
print_string(", was ");
print_long_x(linkbits_last);
print_string(">\n");
if (nSFPPorts != 2) {
uint8_t p5 = sfr_data[2] >> 4;
uint8_t p5_last = linkbits_last[2] >> 4;
cpy_4(linkbits_last, sfr_data);
if (p5_last != p5) {
if (p5 == 0x5) // 2.5GBit Mode
sds_config(0, SDS_HISGMII);
else if (p5 == 0x2) // 1GBit
sds_config(0, SDS_SGMII);
}
} else {
cpy_4(linkbits_last, sfr_data);
}
}
// Check for changes with SFP modules
handle_sfp();
/* Button pressed on KL-8xhm-x2:
reg_read(RTL837X_REG_GPIO_32_63_INPUT);
if (!(sfr_data[2] & 0x40))
print_string("Button pressed\n");
*/
// Check new Packets RX
handle_rx();
// Check UIP for packets to transmit
handle_tx();
}
// Sleep the given number of ticks and perform idle tasks if initialized
void sleep(uint16_t t)
{
sleep_ticks = t;
while (sleep_ticks > 0) {
if (idle_ready)
idle();
else
PCON |= 1;
}
}
void reset_chip(void)
{
REG_SET(RTL837X_REG_RESET, 1);
}
void setup_external_irqs(void)
{
REG_SET(0x5f84, 0x42);
REG_SET(0x5f34, 0x3ff);
// EX0 = 1; // Enable external IRQ 0 (Link-change)
EX0 = 0;
IT0 = 1; // External IRQ on falling edge
EX1 = 1; // External IRQ 1 enable
EX2 = 1; // External IRQ 2 enable: bit EIE.0
EX3 = 1; // External IRQ 3 enable: bit EIE.1
PX3 = 1; // Set EIP.1 = 1: External IRQ 3 set to high priority
}
void rtl8224_enable(void)
{
// Set Pin 4 low
reg_bit_clear(RTL837X_REG_GPIO_32_63_OUTPUT, 4);
// Configure Pin as output
reg_bit_set(RTL837X_REG_GPIO_32_63_DIRECTION, 4);
delay(100);
// Set pin 4 high
reg_bit_set(RTL837X_REG_GPIO_32_63_OUTPUT, 4);
delay(500);
}
/*
* Set dividers for a chosen CPU frequency
*/
void setup_clock(void)
{
reg_read_m(RTL837X_REG_HW_CONF);
sfr_mask_data(0, 0x30, 0);
#if CLOCK_DIV != 0
// Divider in bits 4 & 5
sfr_mask_data(0, 0, CLOCK_DIV << 4);
#endif
// Bit 8 is set in managed mode 125MHz to use fast SPI mode
sfr_mask_data(1, 0, 0x01);
reg_write_m(RTL837X_REG_HW_CONF);
// Enable serial interface, set bit 0
reg_read_m(RTL837X_PIN_MUX_1);
sfr_mask_data(0, 0x1, 0x1);
reg_write_m(RTL837X_PIN_MUX_1);
}
/*
* Write a register reg of multipule phys, using a mask to select them, in page page
* Data to be written is in v
*/
void phy_write_mask(uint16_t phy_mask, uint8_t dev_id, uint16_t reg, uint16_t v)
{
#ifdef REGDBG
print_string("P"); print_byte(phy_mask>>8); print_byte(phy_mask); print_byte(dev_id); write_char('.'); print_byte(reg>>8); print_byte(reg); write_char(':');
print_byte(v>>8); print_byte(v); write_char(' ');
#endif
SFR_DATA_U16 = v; // SFR_A6, SFR_A7
SFR_SMI_PHYMASK = phy_mask; // SFR_C5
SFR_SMI_REG_U16 = reg; // SFR_C2, SFR_C3
SFR_SMI_DEV = (phy_mask >> 8) | dev_id << 3 | 2; // SFR_C4: bit 2 can also be set for some option
SFR_EXEC_GO = SFR_EXEC_WRITE_SMI;
do {
} while (SFR_EXEC_STATUS != 0);
}
/*
* Write a register reg of phy, using a mask to select them, in page page
* Data to be written is in v
*/
void phy_write(uint8_t phy_id, uint8_t dev_id, uint16_t reg, uint16_t v)
{
uint16_t phy_mask = bit_mask[phy_id];
#ifdef REGDBG
print_string("P"); print_byte(phy_mask>>8); print_byte(phy_mask); print_byte(dev_id); write_char('.'); print_byte(reg>>8); print_byte(reg); write_char(':');
print_byte(v>>8); print_byte(v); write_char(' ');
#endif
SFR_DATA_U16 = v; // SFR_A6, SFR_A7
SFR_SMI_PHYMASK = phy_mask; // SFR_C5
SFR_SMI_REG_U16 = reg; // SFR_C2, SFR_C3
SFR_SMI_DEV = (phy_mask >> 8) | dev_id << 3 | 2; // SFR_C4: bit 2 can also be set for some option
SFR_EXEC_GO = SFR_EXEC_WRITE_SMI;
do {
} while (SFR_EXEC_STATUS != 0);
}
/*
* Read a phy register via MDIO clause 45
* Input must be: phy_id < 64, device_id < 32, reg < 0x10000)
* The result is in SFR A6 and A7 (SFR_DATA_8, SFR_DATA_0)
*/
void phy_read(uint8_t phy_id, uint8_t dev_id, uint16_t reg)
{
#ifdef REGDBG
print_string("p"); print_byte(phy_id); print_byte(dev_id); write_char('.'); print_byte(reg>>8); print_byte(reg); write_char(':');
#endif
SFR_SMI_REG_U16 = reg; // c2, c2
SFR_SMI_PHY = phy_id; // a5
SFR_SMI_DEV = dev_id << 3 | 2; // c4
SFR_EXEC_GO = SFR_EXEC_READ_SMI;
do {
} while (SFR_EXEC_STATUS != 0);
#ifdef REGDBG
print_byte(SFR_DATA_8); print_byte(SFR_DATA_0); write_char(' ');
#endif
}
/*
* Modify a register reg of phy phy_id, in page page
* Set: bit mask of bits to set.
* Mask: bit mask of bits to clear.
* Note: We assume that the registers `SFR_SMI_REG_U16`, `SFR_SMI_PHY` and `SFR_SMI_DEV`
* keep there value, and dont have to be rewritten everytime.
*/
void phy_modify(uint8_t phy_id, uint8_t dev_id, uint16_t reg, uint16_t mask, uint16_t set)
{
uint8_t smi_phy = dev_id << 3 | 2;
// Read the data
SFR_SMI_REG_U16 = reg; // c2, c2
SFR_SMI_PHY = phy_id; // a5
SFR_SMI_DEV = smi_phy; // c4
SFR_EXEC_GO = SFR_EXEC_READ_SMI;
do {
} while (SFR_EXEC_STATUS != 0);
// Modify the reed data.
// TODO: Check if we directly can modify SFR register directly.
uint16_t data = SFR_DATA_U16 & ~(mask);
data |= ~(set);
uint16_t phy_mask = bit_mask[phy_id];
// Write it back
SFR_SMI_REG_U16 = data;
SFR_SMI_PHYMASK = phy_mask; // SFR_C5
SFR_SMI_DEV = smi_phy | (phy_mask >> 8);
SFR_EXEC_GO = SFR_EXEC_WRITE_SMI;
do {
} while (SFR_EXEC_STATUS != 0);
}
void nic_setup(void)
{
// Enable NIC
// r6040:00000100 R6040-00001100
reg_bit_set(RTL837X_REG_HW_CONF, 0xc);
// This sets the size of the RX buffer, the filling level is in 0x7874
// R7848-000004ff
REG_SET(0x7848, 0x4ff);
// R7844-000007fe
REG_SET(0x7844, 0x7fe);
// Configure NIC RX to receive various types of packets
// RTL837X_REG_RX_CTRL: Set bits 24-31 to 0x4, clear bits 16/17
reg_read_m(RTL837X_REG_RX_CTRL);
sfr_mask_data(3, 0xff, 0x04);
sfr_mask_data(2, 0x03, 0);
reg_write_m(RTL837X_REG_RX_CTRL);
// Enable NIC TX (set bit 0)
reg_bit_set(RTL837X_REG_TX_CTRL, 0);
// Enable NIC RX (set bit 0)
reg_bit_set(RTL837X_REG_RX_CTRL, 0);
// Drop packets with invalid CRC
reg_bit_clear(RTL837X_REG_RX_CTRL, 2);
// R603c-00000200
REG_SET(0x603c, 0x200);
// r6720:00000500 R6720-00000501 R6720-00000501 r6720:00000501
reg_read_m(0x6720);
sfr_mask_data(0, 1, 1);
sfr_mask_data(1, 3, 0);
reg_write_m(0x6720);
// r6368:00000194 R6368-00000197
reg_read_m(0x6368);
sfr_mask_data(0, 0, 3);
reg_write_m(0x6368);
// Sequence number of TX packets
tx_seq = 0;
}
/*
* Configure the PHY-Side of the SDS-SDS link between SoC and PHY
*/
void sds_init(void)
{
/*
p001e.000d:9535 R02f8-00009535 R02f4-0000953a P000001.1e00000d:953a
p001e.000d:953a p001e.000d:953a R02f8-0000953a R02f4-00009530 P000001.1e00000d:9530
RTL8373:
p001e.000d:0010 R02f8-00000010 R02f4-0000001a P000001.1e00000d:b7fe
p001e.000d:0010 p001e.000d:0010 R02f8-00000010 R02f4-00000010 P000001.1e00000d:b7fe
*/
phy_read(0, 0x1e, 0xd);
uint16_t pval = SFR_DATA_U16;
// PHY Initialization:
REG_WRITE(0x2f8, 0, 0, pval >> 8, pval);
delay(20);
pval &= 0xfff0;
pval |= 0x0a;
REG_WRITE(0x2f4, 0, 0, pval >> 8, pval);
delay(10);
phy_write_mask(0x1, 0x1e, 0xd, pval);
phy_read(0, 0x1e, 0xd);
pval = SFR_DATA_U16;
REG_WRITE(0x2f8, 0, 0, pval >> 8, pval);
pval &= 0xfff0;
REG_WRITE(0x2f4, 0, 0, pval >> 8, pval);
phy_write_mask(0x1, 0x1e, 0xd, pval);
}
void led_config_9xh(void)
{
// r65d8:3ffbedff R65d8-3ffbedff
reg_bit_set(0x65d8, 0x1d);
// r6520:0021fdb0 R6520-0021e7b0 r6520:0021e7b0 R6520-0021e6b0
reg_read_m(0x6520);
sfr_mask_data(1, 0x1f, 0x6);
sfr_mask_data(0, 0xe0, 0xa0);
reg_write_m(0x6520);
// r65f8:00000018 R65f8-0000001b
reg_read_m(0x65f8);
sfr_mask_data(0, 0, 0x3);
reg_write_m(0x65f8);
// R65fc-ffffffff
REG_SET(0x65fc, 0xffffffff);
// Set bits 0-3 of 0x6600 to 0xf
// r6600:00000000 R6600-0000000f
reg_read_m(0x6600);
sfr_mask_data(0, 0, 0x0f);
reg_write_m(0x6600);
// Set bit 0x1d of 0x65dc, clear bit 1b: r65dc:5fffff00 R65dc-7fffff00 r65dc:7fffff00 R65dc-77ffff00
reg_bit_set(0x65dc, 0x1d);
reg_bit_clear(0x65dc, 0x1b);
// r7f8c:30000000 R7f8c-30000000 r7f8c:30000000 R7f8c-38000000
reg_bit_set(RTL837X_PIN_MUX_0, 0x1b);
// R6548-0041017f
REG_SET(0x6548, 0x0041017f);
// Configure LED_SET_0 ledid 2
// r6544:01411000 R6544-01410044
reg_read_m(0x6544);
sfr_data[2] = 0x00;
sfr_data[3] = 0x44;
reg_write_m(0x6544);
// r6528:00000000 R6528-0000000f
reg_read_m(0x6528);
sfr_mask_data(0, 0x0f, 0x0f);
reg_write_m(0x6528);
}
void led_config(void)
{
// LED initialization
// r6520:0021fdb0 R6520-0021e7b0 r6520:0021e7b0 R6520-0021e6b0
reg_read_m(RTL837X_REG_LED_MODE);
sfr_mask_data(2, 0xe0, 0x23); // Mask blink rate field (0xe0), set blink rate and LED to solid (set bit 1 = bit 17 overall)
// Configure led-mode (serial?)
sfr_data[2] = 0xe6;
sfr_data[3] = 0xb0;
reg_write_m(RTL837X_REG_LED_MODE);
// Clear bits 0,1 of 0x65f8
// r65f8:00000018 R65f8-00000018
reg_read_m(0x65f8);
sfr_mask_data(0, 0x03, 0);
reg_write_m(0x65f8);
// Set 0x65fc to 0xfffff000
// R65fc-fffff000
REG_SET(0x65fc, 0xfffff000);
// Set bits 0-3 of 0x6600 to 0xf
// r6600:00000000 R6600-0000000f
reg_read_m(0x6600);
sfr_mask_data(0, 0, 0x0f);
reg_write_m(0x6600);
// Set bit 0x1d of 0x65dc, clear bit 1b: r65dc:5fffff00 R65dc-7fffff00 r65dc:7fffff00 R65dc-77ffff00
reg_bit_set(0x65dc, 0x1d);
reg_bit_clear(0x65dc, 0x1b);
// Set bits 1b/1d of 0x7f8c: r7f8c:30000000 R7f8c-30000000 r7f8c:30000000 R7f8c-38000000
if (nSFPPorts == 2) {
reg_bit_set(RTL837X_PIN_MUX_0, 0x1b); // R7f8c-28000000
reg_bit_clear(RTL837X_PIN_MUX_0, 0x1c); // R7f8c-28000000
reg_bit_set(RTL837X_PIN_MUX_0, 0x1d); // R7f8c-28000000
} else {
reg_bit_set(RTL837X_PIN_MUX_0, 0x1d);
reg_bit_set(RTL837X_PIN_MUX_0, 0x1c);
reg_bit_set(RTL837X_PIN_MUX_0, 0x1b);
}
// LED setup
// r6520:0021fdb0 R6520-0021e7b0 r6520:0021e7b0 R6520-0021e6b0 r65f8:00000018 R65f8-00000018 R65fc-fffff000 r6600:00000000 R6600-0000000f r65dc:5fffff00 R65dc-7fffff00 r65dc:7fffff00 R65dc-77ffff00
// r7f8c:30000000 R7f8c-30000000 r7f8c:30000000 R7f8c-38000000 R6548-00410175 r6544:01411000 R6544-01410044 r6528:00000000 R6528-00000011 r6450:000020e6 R6450-000000e6 r644c:0a418820 R644c-0a400820
// Configure LED_SET_0, ledid 0/1
// R6548-00410175
REG_SET(0x6548, 0x00410175);
// Configure LED_SET_0 ledid 2
// 6544:01411000 R6544-01410044
reg_read_m(0x6544);
sfr_data[2] = 0x00;
sfr_data[3] = 0x44;
reg_write_m(0x6544);
// Further configure LED_SET_0
// r6528:00000000 R6528-00000011
reg_read_m(0x6528);
sfr_data[3] = 0x11;
reg_write_m(0x6528);
reg_read_m(0x6450);
sfr_mask_data(1, 0x7c, 0);
reg_write_m(0x6450);
// SDS bits f-13 set to 0: r644c:0a418820 R644c-0a400820
reg_read_m(0x644c);
sfr_mask_data(2, 0x0f, 0);
sfr_mask_data(1, 0x80, 0);
reg_write_m(0x644c);
}
void rtl8373_revision(void)
{
// r000c:00300000 R000c-003a0000 r000c:203a6818 r000c:203a6818 R000c-20306818
reg_read_m(0x000c);
sfr_mask_data(2, 0x0a, 0x0a); // Enable reading version
reg_write_m(0x000c);
delay(50);
reg_read_m(0x000c);
print_string("CPU revision: "); print_byte(sfr_data[2]); print_byte(sfr_data[2]); write_char('\n');
sfr_mask_data(2, 0x0a, 0x00); // Enable reading version
reg_write_m(0x000c);
}
void rtl8373_init(void)
{
print_string("\nrtl8373_init called\n");
minPort = 0;
maxPort = 8;
cpuPort = 9;
nSFPPorts = 1;
// r6330:00015555 R6330-00005555 r6330:00005555 R6330-00005555
REG_SET(0x6330, 0x00005555);
// r6334:00000000 R6334-000001f8 RTL8373: r6334:00000000 R6334-000000ff
reg_read_m(0x6334); // Also in sdsMode_set
sfr_mask_data(0, 0, 0xff);
reg_write_m(0x6334);
// Enable MDC
// r6454:00000000 R6454-00007000 RTL837X_REG_SMI_CTRL
reg_read_m(RTL837X_REG_SMI_CTRL);
sfr_mask_data(1, 0, 0x70); // Set bits 0xc-0xe to enable MDC for SMI0-SMI2
reg_write_m(RTL837X_REG_SMI_CTRL);
delay(50);
rtl8373_revision();
led_config_9xh();
sds_init();
// Disable all SERDES for configuration
REG_SET(RTL837X_REG_SDS_MODES, 0x000037ff);
// q000601:c800 Q000601:c804 q000601:c804 Q000601:c800
sds_read(0, 0x06, 0x01);
uint16_t pval = SFR_DATA_U16;
sds_write_v(0, 0x06, 0x01, pval | 0x04);
delay(50);
sds_read(0, 0x06, 0x01);
pval = SFR_DATA_U16;
sds_write_v(0, 0x06, 0x01, pval & 0xfffb);
phy_config_8224();
sds_config_mac(1, SDS_OFF); // Off for now until SFP+ port used
sds_config_mac(2, SDS_SGMII); // For RTL8224
sds_config(0, SDS_QXGMII);
// SDS 1 setup
// q012100:4902 Q012100:4906 q013605:0000 Q013605:4000 Q011f02:001f q011f15:0086
sds_write_v(1, 0x21, 0x00, 0x4906);
sds_write_v(1, 0x36, 0x05, 0x4000);
sds_write_v(1, 0x1f, 0x02, 0x001f);
sds_read(1, 0x1f, 0x15);
pval = SFR_DATA_U16;
// r0a90:000000f3 R0a90-000000fc
reg_read_m(0xa90);
sfr_mask_data(0, 0x0f,0x0c);
reg_write_m(0xa90);
rtl8224_phy_enable();
// Disable PHYs for configuration
phy_write_mask(0xff,0x1f,0xa610,0x2858);
// Set bits 0x13 and 0x14 of 0x5fd4
// r5fd4:0002914a R5fd4-001a914a
reg_bit_set(0x5fd4, 0x13);
reg_bit_set(0x5fd4, 0x14);
// Configure ports
uint16_t reg = 0x1238; // Port base register for the bits we set
for (char i = 0; i < 9; i++) {
// Bit 7 (0x40) enables replacement of the RTL-VLAN tag with an 802.1Q VLAN tag
REG_SET(reg, 0xe77);
reg += 0x100;
}
// r0b7c:000000d8 R0b7c-000000f8 r6040:00000030 R6040-00000031
reg_bit_set(0xb7c, 5);
// R7124-00001050 R7128-00001050 R712c-00001050 R7130-00001050 R7134-00001050 R7138-00001050 R713c-00001050 R7140-00001050 R7144-00001050 R7148-00001050
REG_SET(0x7124, 0x1050); REG_SET(0x7128, 0x1050); REG_SET(0x712c, 0x1050); REG_SET(0x7130, 0x1050); REG_SET(0x7134, 0x1050); REG_SET(0x7138, 0x1050); REG_SET(0x713c, 0x1050);
REG_SET(0x7140, 0x1050); REG_SET(0x7144, 0x1050); REG_SET(0x7148, 0x1050);
reg_bit_set(RTL837X_REG_HW_CONF, 0);
// TODO: patch the PHYs
// Re-enable PHY after configuration
phy_write_mask(0xff,0x1f,0xa610,0x2058);
// Enables MAC access
// Set bits 0xc-0x14 of 0x632c to 0x1f8, see rtl8372_init
// r632c:00000540 R632c-001f8540 // RTL8373: 001ff540
reg_read_m(0x632c);
sfr_mask_data(1, 0x70, 0xf0); // The ports of the RTL8824
sfr_mask_data(2, 0x10, 0x1f);
reg_write_m(0x632c);
REG_SET(0x7f94, 0);
print_string("\nrtl8373_init done\n");
}
void rtl8372_init(void)
{
print_string("\nrtl8372_init called\n");
minPort = 3;
maxPort = 8;
cpuPort = 9;
nSFPPorts = NSFP;
// r6330:00015555 R6330-00005555 r6330:00005555 R6330-00005555
REG_SET(0x6330, 0x00005555);
if (nSFPPorts == 2) {
print_string("Configuring 2nd SFP+ port\n");
REG_SET(0x6330, 0x00005515);
}
// r6334:00000000 R6334-000001f8 RTL8373: r6334:00000000 R6334-000000ff
reg_read_m(0x6334); // Also in sdsMode_set
if (nSFPPorts == 2) {
sfr_mask_data(0, 0, 0xf0);
} else {
sfr_mask_data(1, 0, 0x01); // Set bits 3-8, On RTL8373+8224 set bits 0-7
sfr_mask_data(0, 0, 0xf8);
}
reg_write_m(0x6334);
// Enable MDC
// r6454:00000000 R6454-00007000 RTL837X_REG_SMI_CTRL
reg_read_m(RTL837X_REG_SMI_CTRL);
sfr_mask_data(1, 0, 0x70); // Set bits 0xc-0xe to enable MDC for SMI0-SMI2
reg_write_m(RTL837X_REG_SMI_CTRL);
delay(50);
led_config();
sds_init();
phy_config(8); // PHY configuration: External 8221B?
phy_config(3); // PHY configuration: all internal PHYs?
// Set the MAC SerDes Modes Bits 0-4: SDS 0 = 0x2 (0x2), Bits 5-9: SDS 1: 1f (off)
// r7b20:00000bff R7b20-00000bff r7b20:00000bff R7b20-00000bff r7b20:00000bff R7b20-000003ff r7b20:000003ff R7b20-000003e2 r7b20:000003e2 R7b20-000003e2
reg_read_m(RTL837X_REG_SDS_MODES);
sfr_mask_data(1, 0, 0x03);
sfr_mask_data(0, 0, 0xe2);
reg_write_m(RTL837X_REG_SDS_MODES);
// r0a90:000000f3 R0a90-000000fc
reg_read_m(0xa90);
sfr_mask_data(0, 0x0f,0x0c);
reg_write_m(0xa90);
// Disable PHYs for configuration
phy_write_mask(0xf0,0x1f,0xa610,0x2858);
// Set bits 0x13 and 0x14 of 0x5fd4
// r5fd4:0002914a R5fd4-001a914a
reg_bit_set(0x5fd4, 0x13);
reg_bit_set(0x5fd4, 0x14);
// Configure ports 3-8:
//
// r1538:00000e33 R1538-00000e37 r1538:00000e37 R1538-00000e37 r1538:00000e37 R1538-00000f37
// [...]
///
uint16_t reg = 0x1238 + 0x300; // Port base register for the bits we set
for (char i = minPort; i <= maxPort; i++) {
// Bit 7 (0x40) enables replacement of the RTL-VLAN tag with an 802.1Q VLAN tag
REG_SET(reg, 0xe77);
reg += 0x100;
}
// r0b7c:000000d8 R0b7c-000000f8 r6040:00000030 R6040-00000031
reg_bit_set(0xb7c, 5);
reg_bit_set(RTL837X_REG_HW_CONF, 0);
// TODO: patch the PHYs
// Re-enable PHY after configuration
phy_write_mask(0xf0,0x1f,0xa610,0x2058);
// Enables MAC access
// Set bits 0xc-0x14 of 0x632c to 0x1f8, see rtl8372_init
// r632c:00000540 R632c-001f8540 // RTL8373: 001ff540
reg_read_m(0x632c);
sfr_mask_data(1, 0x70, 0x80);
sfr_mask_data(2, 0x10, 0x1f);
reg_write_m(0x632c);
print_string("\nrtl8372_init done\n");
}
/* Set up serial port 0 using Timer 2 with an external trigger
* as baud generator.
* The external clock generator uses a crystal at 25MHz.
*/
void setup_serial(void)
{
IE = 0;
T2CON = 0x34; // Enable RCLK/TCLK (serial transmit/receive clock for T2), TR2 (Timer 2 RUN), disable CP/RL2 (bit 0)
SCON = 0x50; // Mode = 1: ASYNC 8N1 with T2 as baud-rate generator, REN_0 Receive enable
// The RCAP2 registers contain the high/low byte that is loaded into
// timer2 when T2 overflows to 0x10000
RCAP2H = (0x10000 - (CLOCK_HZ / SERIAL_BAUD_RATE / 32)) >> 8;
RCAP2L = (0x10000 - (CLOCK_HZ / SERIAL_BAUD_RATE / 32)) % 0xff;
PCON |= 0x80; // Double the Baud Rate
SCON = 0x50;
TI = 1;
RI = 0;
ES = 1; // Enable serial IRQ
}
void setup_i2c(void)
{
REG_SET(0x0414, 0);
REG_SET(0x0418, 0x00100280);
REG_SET(0x041c, 0);
// HW Control register, enable I2C?
reg_read_m(RTL837X_PIN_MUX_1);
sfr_mask_data(3, 0x20, 0x00); // Clear bit 29
sfr_mask_data(0, 0x60, 0x40); // Set bits 5-6 to 0b10
reg_write_m(RTL837X_PIN_MUX_1);
}
void bootloader(void)
{
ticks = 0;
sbuf_ptr = 0;
CKCON = 0; // Initial Clock configuration
SFR_97 = 0; // HADDR?
// Set in managed mode:
SFR_b9 = 0x00;
SFR_ba = 0x80;
// Disable all interrupts (global and individually) by setting IE register (SFR A8) to 0
IE = 0;
EIE = 0; // SFR e8: EIE. Disable all external IRQs
// Disable all interrupts (global interrupt enable bit)
EA = 0; // SFR A8.7 / IE.7
idle_ready = 0;
// HW setup, serial, timer, external IRQs
setup_clock();
setup_serial();
setup_timer0();
setup_external_irqs();
EA = 1; // Enable all IRQs
// Set default for SFP pins so we can start up a module already inserted
sfp_pins_last = 0x33; // signal LOS and no module inserted (for both slots, even if only 1 present)
// We have not detected any link
linkbits_last[0] = linkbits_last[1] = linkbits_last[2] = linkbits_last[3] = 0;
print_string("Detecting CPU: ");
isRTL8373 = 0;
reg_read_m(0x4);
if (sfr_data[1] == 0x73) { // Register was 0x83730000
print_string("RTL8373\n");
isRTL8373 = 1;
rtl8224_enable(); // Power on the RTL8224
} else {
print_string("RTL8372\n");
}
print_string("\nStarting up...\n");
print_string(" Flash controller\n");
flash_init(0);
// Reset NIC
reg_bit_set(0x24, 2);
do {
reg_read(0x24);
} while (SFR_DATA_0 & 0x4);
print_string("NIC reset\n");
uip_ipaddr(&uip_hostaddr, ownIP[0], ownIP[1], ownIP[2], ownIP[3]);
uip_ipaddr(&uip_draddr, gatewayIP[0], gatewayIP[1], gatewayIP[2], gatewayIP[3]);
uip_ipaddr(&uip_netmask, netmask[0], netmask[1], netmask[2], netmask[3]);
REG_SET(0x7f94, 0x0);
if (isRTL8373)
rtl8373_init();
else
rtl8372_init();
delay(1000);
#ifdef DEBUG
// This register seems to work on the RTL8373 only if also the SDS
// Is correctly configured. Therefore, we can test it, here...
// Reset seconds counter
print_string("\nTIMER-TEST: \n");
REG_SET(RTL837X_REG_SEC_COUNTER, 0x0);
delay(100);
print_reg(RTL837X_REG_SEC_COUNTER); write_char(' ');
REG_SET(RTL837X_REG_SEC_COUNTER, 0x1);
delay(100);
print_reg(RTL837X_REG_SEC_COUNTER);
REG_SET(RTL837X_REG_SEC_COUNTER, 0x2); write_char(' ');
delay(100);
print_reg(RTL837X_REG_SEC_COUNTER);
REG_SET(RTL837X_REG_SEC_COUNTER, 0x3); write_char(' ');
print_reg(RTL837X_REG_SEC_COUNTER);
#endif
nic_setup();
vlan_setup();
port_l2_setup();
uip_init();
uip_arp_init();
httpd_init();
was_offline = 1;
setup_i2c();
print_string(greeting);
print_string("\nClock register: ");
print_reg(0x6040);
print_string("\nRegister 0x7b20/RTL837X_REG_SDS_MODES: ");
print_reg(0x7b20);
print_string("\nVerifying PHY settings:\n");
// p031f.a610:2058 p041f.a610:2058 p051f.a610:2058 r4f3c:00000000 p061f.a610:2058 p071f.a610:2058
port_stats_print();
execute_config();
print_string("\n> ");
idle_ready = 1;
// Wait for commands on serial connection
// sbuf_ptr is moved forward by serial interrupt, l is the position until we have already
// printed out the entered characters
__xdata uint8_t l = sbuf_ptr; // We have printed out entered characters until l
__xdata uint8_t line_start = sbuf_ptr; // This is where the current line starts
while (1) {
while (l != sbuf_ptr) {
write_char(sbuf[l]);
// Check whether there is a full line:
if (sbuf[l] == '\n' || sbuf[l] == '\r') {
write_char('\n');
register uint8_t i = 0;
while (line_start != l) {
cmd_buffer[i++] = sbuf[line_start++];
line_start &= (SBUF_SIZE - 1);
}
line_start++;
line_start &= (SBUF_SIZE - 1);
cmd_buffer[i] = '\0';
if (i && !cmd_tokenize())
cmd_parser();
print_string("\n> ");
}
l++;
l &= (SBUF_SIZE - 1);
}
idle(); // Enter Idle mode until interrupt occurs
}
}
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