mpc83xx: Add gdsys hrcon board
The gdsys hrcon board is based on a Freescale MPC8308 SOC.
It boots from NOR-Flash, kernel and rootfs are stored on
SD-Card.
On board peripherals include:
- 1x GbE (optional)
- Lattice ECP3 FPGA connected via eLBC and PCIe
Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/gdsys/common/cmd_ioloop.c b/board/gdsys/common/cmd_ioloop.c
new file mode 100644
index 0000000..e0c74fe
--- /dev/null
+++ b/board/gdsys/common/cmd_ioloop.c
@@ -0,0 +1,295 @@
+/*
+ * (C) Copyright 2014
+ * Dirk Eibach, Guntermann & Drunck GmbH, dirk.eibach@gdsys.cc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+
+#include <gdsys_fpga.h>
+
+enum {
+ STATE_TX_PACKET_BUILDING = 1<<0,
+ STATE_TX_TRANSMITTING = 1<<1,
+ STATE_TX_BUFFER_FULL = 1<<2,
+ STATE_TX_ERR = 1<<3,
+ STATE_RECEIVE_TIMEOUT = 1<<4,
+ STATE_PROC_RX_STORE_TIMEOUT = 1<<5,
+ STATE_PROC_RX_RECEIVE_TIMEOUT = 1<<6,
+ STATE_RX_DIST_ERR = 1<<7,
+ STATE_RX_LENGTH_ERR = 1<<8,
+ STATE_RX_FRAME_CTR_ERR = 1<<9,
+ STATE_RX_FCS_ERR = 1<<10,
+ STATE_RX_PACKET_DROPPED = 1<<11,
+ STATE_RX_DATA_LAST = 1<<12,
+ STATE_RX_DATA_FIRST = 1<<13,
+ STATE_RX_DATA_AVAILABLE = 1<<15,
+};
+
+enum {
+ CTRL_PROC_RECEIVE_ENABLE = 1<<12,
+ CTRL_FLUSH_TRANSMIT_BUFFER = 1<<15,
+};
+
+enum {
+ IRQ_CPU_TRANSMITBUFFER_FREE_STATUS = 1<<5,
+ IRQ_CPU_PACKET_TRANSMITTED_EVENT = 1<<6,
+ IRQ_NEW_CPU_PACKET_RECEIVED_EVENT = 1<<7,
+ IRQ_CPU_RECEIVE_DATA_AVAILABLE_STATUS = 1<<8,
+};
+
+struct io_generic_packet {
+ u16 target_address;
+ u16 source_address;
+ u8 packet_type;
+ u8 bc;
+ u16 packet_length;
+} __attribute__((__packed__));
+
+unsigned long long rx_ctr;
+unsigned long long tx_ctr;
+unsigned long long err_ctr;
+
+static void io_check_status(unsigned int fpga, u16 status, bool silent)
+{
+ u16 mask = STATE_RX_DIST_ERR | STATE_RX_LENGTH_ERR |
+ STATE_RX_FRAME_CTR_ERR | STATE_RX_FCS_ERR |
+ STATE_RX_PACKET_DROPPED | STATE_TX_ERR;
+
+ if (!(status & mask)) {
+ FPGA_SET_REG(fpga, ep.rx_tx_status, status);
+ return;
+ }
+
+ err_ctr++;
+ FPGA_SET_REG(fpga, ep.rx_tx_status, status);
+
+ if (silent)
+ return;
+
+ if (status & STATE_RX_PACKET_DROPPED)
+ printf("RX_PACKET_DROPPED, status %04x\n", status);
+
+ if (status & STATE_RX_DIST_ERR)
+ printf("RX_DIST_ERR\n");
+ if (status & STATE_RX_LENGTH_ERR)
+ printf("RX_LENGTH_ERR\n");
+ if (status & STATE_RX_FRAME_CTR_ERR)
+ printf("RX_FRAME_CTR_ERR\n");
+ if (status & STATE_RX_FCS_ERR)
+ printf("RX_FCS_ERR\n");
+
+ if (status & STATE_TX_ERR)
+ printf("TX_ERR\n");
+}
+
+static void io_send(unsigned int fpga, unsigned int size)
+{
+ unsigned int k;
+ struct io_generic_packet packet = {
+ .source_address = 1,
+ .packet_type = 1,
+ .packet_length = size,
+ };
+ u16 *p = (u16 *)&packet;
+
+ for (k = 0; k < sizeof(packet) / 2; ++k)
+ FPGA_SET_REG(fpga, ep.transmit_data, *p++);
+
+ for (k = 0; k < (size + 1) / 2; ++k)
+ FPGA_SET_REG(fpga, ep.transmit_data, k);
+
+ FPGA_SET_REG(fpga, ep.rx_tx_control,
+ CTRL_PROC_RECEIVE_ENABLE | CTRL_FLUSH_TRANSMIT_BUFFER);
+
+ tx_ctr++;
+}
+
+static void io_receive(unsigned int fpga)
+{
+ unsigned int k = 0;
+ u16 rx_tx_status;
+
+ FPGA_GET_REG(fpga, ep.rx_tx_status, &rx_tx_status);
+
+ while (rx_tx_status & STATE_RX_DATA_AVAILABLE) {
+ u16 rx;
+
+ if (rx_tx_status & STATE_RX_DATA_LAST)
+ rx_ctr++;
+
+ FPGA_GET_REG(fpga, ep.receive_data, &rx);
+
+ FPGA_GET_REG(fpga, ep.rx_tx_status, &rx_tx_status);
+
+ ++k;
+ }
+}
+
+static void io_reflect(unsigned int fpga)
+{
+ u16 buffer[128];
+
+ unsigned int k = 0;
+ unsigned int n;
+ u16 rx_tx_status;
+
+ FPGA_GET_REG(fpga, ep.rx_tx_status, &rx_tx_status);
+
+ while (rx_tx_status & STATE_RX_DATA_AVAILABLE) {
+ FPGA_GET_REG(fpga, ep.receive_data, &buffer[k++]);
+ if (rx_tx_status & STATE_RX_DATA_LAST)
+ break;
+
+ FPGA_GET_REG(fpga, ep.rx_tx_status, &rx_tx_status);
+ }
+
+ if (!k)
+ return;
+
+ for (n = 0; n < k; ++n)
+ FPGA_SET_REG(fpga, ep.transmit_data, buffer[n]);
+
+ FPGA_SET_REG(fpga, ep.rx_tx_control,
+ CTRL_PROC_RECEIVE_ENABLE | CTRL_FLUSH_TRANSMIT_BUFFER);
+
+ tx_ctr++;
+}
+
+/*
+ * FPGA io-endpoint reflector
+ *
+ * Syntax:
+ * ioreflect {fpga} {reportrate}
+ */
+int do_ioreflect(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ unsigned int fpga;
+ unsigned int rate = 0;
+ unsigned long long last_seen = 0;
+
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ fpga = simple_strtoul(argv[1], NULL, 10);
+
+ /*
+ * If another parameter, it is the report rate in packets.
+ */
+ if (argc > 2)
+ rate = simple_strtoul(argv[2], NULL, 10);
+
+ /* enable receive path */
+ FPGA_SET_REG(fpga, ep.rx_tx_control, CTRL_PROC_RECEIVE_ENABLE);
+
+ /* set device address to dummy 1*/
+ FPGA_SET_REG(fpga, ep.device_address, 1);
+
+ rx_ctr = 0; tx_ctr = 0; err_ctr = 0;
+
+ while (1) {
+ u16 top_int;
+ u16 rx_tx_status;
+
+ FPGA_GET_REG(fpga, top_interrupt, &top_int);
+ FPGA_GET_REG(fpga, ep.rx_tx_status, &rx_tx_status);
+
+ io_check_status(fpga, rx_tx_status, true);
+ if ((top_int & IRQ_CPU_RECEIVE_DATA_AVAILABLE_STATUS) &&
+ (top_int & IRQ_CPU_TRANSMITBUFFER_FREE_STATUS))
+ io_reflect(fpga);
+
+ if (rate) {
+ if (!(tx_ctr % rate) && (tx_ctr != last_seen))
+ printf("refl %llu, err %llu\n", tx_ctr,
+ err_ctr);
+ last_seen = tx_ctr;
+ }
+
+ if (ctrlc())
+ break;
+ }
+
+ return 0;
+}
+
+/*
+ * FPGA io-endpoint looptest
+ *
+ * Syntax:
+ * ioloop {fpga} {size} {rate}
+ */
+#define DISP_LINE_LEN 16
+int do_ioloop(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ unsigned int fpga;
+ unsigned int size;
+ unsigned int rate = 0;
+
+ if (argc < 3)
+ return CMD_RET_USAGE;
+
+ /*
+ * FPGA is specified since argc > 2
+ */
+ fpga = simple_strtoul(argv[1], NULL, 10);
+
+ /*
+ * packet size is specified since argc > 2
+ */
+ size = simple_strtoul(argv[2], NULL, 10);
+
+ /*
+ * If another parameter, it is the test rate in packets per second.
+ */
+ if (argc > 3)
+ rate = simple_strtoul(argv[3], NULL, 10);
+
+ /* enable receive path */
+ FPGA_SET_REG(fpga, ep.rx_tx_control, CTRL_PROC_RECEIVE_ENABLE);
+
+ /* set device address to dummy 1*/
+ FPGA_SET_REG(fpga, ep.device_address, 1);
+
+ rx_ctr = 0; tx_ctr = 0; err_ctr = 0;
+
+ while (1) {
+ u16 top_int;
+ u16 rx_tx_status;
+
+ FPGA_GET_REG(fpga, top_interrupt, &top_int);
+ FPGA_GET_REG(fpga, ep.rx_tx_status, &rx_tx_status);
+
+ io_check_status(fpga, rx_tx_status, false);
+ if (top_int & IRQ_CPU_TRANSMITBUFFER_FREE_STATUS)
+ io_send(fpga, size);
+ if (top_int & IRQ_CPU_RECEIVE_DATA_AVAILABLE_STATUS)
+ io_receive(fpga);
+
+ if (rate) {
+ if (ctrlc())
+ break;
+ udelay(1000000 / rate);
+ if (!(tx_ctr % rate))
+ printf("d %lld, tx %llu, rx %llu, err %llu\n",
+ tx_ctr - rx_ctr, tx_ctr, rx_ctr,
+ err_ctr);
+ }
+ }
+
+ return 0;
+}
+
+U_BOOT_CMD(
+ ioloop, 4, 0, do_ioloop,
+ "fpga io-endpoint looptest",
+ "fpga packetsize [packets/sec]"
+);
+
+U_BOOT_CMD(
+ ioreflect, 3, 0, do_ioreflect,
+ "fpga io-endpoint reflector",
+ "fpga reportrate"
+);