--- /dev/null
+/*
+ * (C) Copyright 2003
+ * Steven Scholz, imc Measurement & Control, steven.scholz@imc-berlin.de
+ *
+ * (C) Copyright 2002
+ * Rich Ireland, Enterasys Networks, rireland@enterasys.com.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h> /* core U-Boot definitions */
+#include <ACEX1K.h> /* ACEX device family */
+
+/* Define FPGA_DEBUG to get debug printf's */
+#ifdef FPGA_DEBUG
+#define PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define PRINTF(fmt,args...)
+#endif
+
+/* Note: The assumption is that we cannot possibly run fast enough to
+ * overrun the device (the Slave Parallel mode can free run at 50MHz).
+ * If there is a need to operate slower, define CONFIG_FPGA_DELAY in
+ * the board config file to slow things down.
+ */
+#ifndef CONFIG_FPGA_DELAY
+#define CONFIG_FPGA_DELAY()
+#endif
+
+#ifndef CONFIG_SYS_FPGA_WAIT
+#define CONFIG_SYS_FPGA_WAIT CONFIG_SYS_HZ/10 /* 100 ms */
+#endif
+
+static int ACEX1K_ps_load(Altera_desc *desc, const void *buf, size_t bsize);
+static int ACEX1K_ps_dump(Altera_desc *desc, const void *buf, size_t bsize);
+/* static int ACEX1K_ps_info(Altera_desc *desc); */
+
+/* ------------------------------------------------------------------------- */
+/* ACEX1K Generic Implementation */
+int ACEX1K_load(Altera_desc *desc, const void *buf, size_t bsize)
+{
+ int ret_val = FPGA_FAIL;
+
+ switch (desc->iface) {
+ case passive_serial:
+ PRINTF ("%s: Launching Passive Serial Loader\n", __FUNCTION__);
+ ret_val = ACEX1K_ps_load (desc, buf, bsize);
+ break;
+
+ /* Add new interface types here */
+
+ default:
+ printf ("%s: Unsupported interface type, %d\n",
+ __FUNCTION__, desc->iface);
+ }
+
+ return ret_val;
+}
+
+int ACEX1K_dump(Altera_desc *desc, const void *buf, size_t bsize)
+{
+ int ret_val = FPGA_FAIL;
+
+ switch (desc->iface) {
+ case passive_serial:
+ PRINTF ("%s: Launching Passive Serial Dump\n", __FUNCTION__);
+ ret_val = ACEX1K_ps_dump (desc, buf, bsize);
+ break;
+
+ /* Add new interface types here */
+
+ default:
+ printf ("%s: Unsupported interface type, %d\n",
+ __FUNCTION__, desc->iface);
+ }
+
+ return ret_val;
+}
+
+int ACEX1K_info( Altera_desc *desc )
+{
+ return FPGA_SUCCESS;
+}
+
+
+/* ------------------------------------------------------------------------- */
+/* ACEX1K Passive Serial Generic Implementation */
+
+static int ACEX1K_ps_load(Altera_desc *desc, const void *buf, size_t bsize)
+{
+ int ret_val = FPGA_FAIL; /* assume the worst */
+ Altera_ACEX1K_Passive_Serial_fns *fn = desc->iface_fns;
+ int i;
+
+ PRINTF ("%s: start with interface functions @ 0x%p\n",
+ __FUNCTION__, fn);
+
+ if (fn) {
+ size_t bytecount = 0;
+ unsigned char *data = (unsigned char *) buf;
+ int cookie = desc->cookie; /* make a local copy */
+ unsigned long ts; /* timestamp */
+
+ PRINTF ("%s: Function Table:\n"
+ "ptr:\t0x%p\n"
+ "struct: 0x%p\n"
+ "config:\t0x%p\n"
+ "status:\t0x%p\n"
+ "clk:\t0x%p\n"
+ "data:\t0x%p\n"
+ "done:\t0x%p\n\n",
+ __FUNCTION__, &fn, fn, fn->config, fn->status,
+ fn->clk, fn->data, fn->done);
+#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
+ printf ("Loading FPGA Device %d...", cookie);
+#endif
+
+ /*
+ * Run the pre configuration function if there is one.
+ */
+ if (*fn->pre) {
+ (*fn->pre) (cookie);
+ }
+
+ /* Establish the initial state */
+ (*fn->config) (true, true, cookie); /* Assert nCONFIG */
+
+ udelay(2); /* T_cfg > 2us */
+
+ /* nSTATUS should be asserted now */
+ (*fn->done) (cookie);
+ if ( !(*fn->status) (cookie) ) {
+ puts ("** nSTATUS is not asserted.\n");
+ (*fn->abort) (cookie);
+ return FPGA_FAIL;
+ }
+
+ (*fn->config) (false, true, cookie); /* Deassert nCONFIG */
+ udelay(2); /* T_cf2st1 < 4us */
+
+ /* Wait for nSTATUS to be released (i.e. deasserted) */
+ ts = get_timer (0); /* get current time */
+ do {
+ CONFIG_FPGA_DELAY ();
+ if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) { /* check the time */
+ puts ("** Timeout waiting for STATUS to go high.\n");
+ (*fn->abort) (cookie);
+ return FPGA_FAIL;
+ }
+ (*fn->done) (cookie);
+ } while ((*fn->status) (cookie));
+
+ /* Get ready for the burn */
+ CONFIG_FPGA_DELAY ();
+
+ /* Load the data */
+ while (bytecount < bsize) {
+ unsigned char val=0;
+#ifdef CONFIG_SYS_FPGA_CHECK_CTRLC
+ if (ctrlc ()) {
+ (*fn->abort) (cookie);
+ return FPGA_FAIL;
+ }
+#endif
+ /* Altera detects an error if INIT goes low (active)
+ while DONE is low (inactive) */
+#if 0 /* not yet implemented */
+ if ((*fn->done) (cookie) == 0 && (*fn->init) (cookie)) {
+ puts ("** CRC error during FPGA load.\n");
+ (*fn->abort) (cookie);
+ return (FPGA_FAIL);
+ }
+#endif
+ val = data [bytecount ++ ];
+ i = 8;
+ do {
+ /* Deassert the clock */
+ (*fn->clk) (false, true, cookie);
+ CONFIG_FPGA_DELAY ();
+ /* Write data */
+ (*fn->data) ((val & 0x01), true, cookie);
+ CONFIG_FPGA_DELAY ();
+ /* Assert the clock */
+ (*fn->clk) (true, true, cookie);
+ CONFIG_FPGA_DELAY ();
+ val >>= 1;
+ i --;
+ } while (i > 0);
+
+#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
+ if (bytecount % (bsize / 40) == 0)
+ putc ('.'); /* let them know we are alive */
+#endif
+ }
+
+ CONFIG_FPGA_DELAY ();
+
+#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
+ putc (' '); /* terminate the dotted line */
+#endif
+
+ /*
+ * Checking FPGA's CONF_DONE signal - correctly booted ?
+ */
+
+ if ( ! (*fn->done) (cookie) ) {
+ puts ("** Booting failed! CONF_DONE is still deasserted.\n");
+ (*fn->abort) (cookie);
+ return (FPGA_FAIL);
+ }
+
+ /*
+ * "DCLK must be clocked an additional 10 times fpr ACEX 1K..."
+ */
+
+ for (i = 0; i < 12; i++) {
+ CONFIG_FPGA_DELAY ();
+ (*fn->clk) (true, true, cookie); /* Assert the clock pin */
+ CONFIG_FPGA_DELAY ();
+ (*fn->clk) (false, true, cookie); /* Deassert the clock pin */
+ }
+
+ ret_val = FPGA_SUCCESS;
+
+#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
+ if (ret_val == FPGA_SUCCESS) {
+ puts ("Done.\n");
+ }
+ else {
+ puts ("Fail.\n");
+ }
+#endif
+ (*fn->post) (cookie);
+
+ } else {
+ printf ("%s: NULL Interface function table!\n", __FUNCTION__);
+ }
+
+ return ret_val;
+}
+
+static int ACEX1K_ps_dump(Altera_desc *desc, const void *buf, size_t bsize)
+{
+ /* Readback is only available through the Slave Parallel and */
+ /* boundary-scan interfaces. */
+ printf ("%s: Passive Serial Dumping is unavailable\n",
+ __FUNCTION__);
+ return FPGA_FAIL;
+}
Code Review / kvmfornfv.git / blobdiff