mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
6385b28116
PPC boards are the only users of the current FPGA code which is littered with manual relocation fixups. Now that proper relocation is supported for PPC boards, remove FPGA manual relocation. Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
267 lines
6.8 KiB
C
267 lines
6.8 KiB
C
/*
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* (C) Copyright 2003
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* Steven Scholz, imc Measurement & Control, steven.scholz@imc-berlin.de
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*
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* (C) Copyright 2002
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* Rich Ireland, Enterasys Networks, rireland@enterasys.com.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*/
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#include <common.h> /* core U-Boot definitions */
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#include <ACEX1K.h> /* ACEX device family */
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/* Define FPGA_DEBUG to get debug printf's */
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#ifdef FPGA_DEBUG
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#define PRINTF(fmt,args...) printf (fmt ,##args)
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#else
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#define PRINTF(fmt,args...)
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#endif
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/* Note: The assumption is that we cannot possibly run fast enough to
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* overrun the device (the Slave Parallel mode can free run at 50MHz).
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* If there is a need to operate slower, define CONFIG_FPGA_DELAY in
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* the board config file to slow things down.
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*/
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#ifndef CONFIG_FPGA_DELAY
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#define CONFIG_FPGA_DELAY()
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#endif
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#ifndef CONFIG_SYS_FPGA_WAIT
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#define CONFIG_SYS_FPGA_WAIT CONFIG_SYS_HZ/10 /* 100 ms */
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#endif
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static int ACEX1K_ps_load( Altera_desc *desc, void *buf, size_t bsize );
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static int ACEX1K_ps_dump( Altera_desc *desc, void *buf, size_t bsize );
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/* static int ACEX1K_ps_info( Altera_desc *desc ); */
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/* ------------------------------------------------------------------------- */
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/* ACEX1K Generic Implementation */
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int ACEX1K_load (Altera_desc * desc, void *buf, size_t bsize)
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{
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int ret_val = FPGA_FAIL;
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switch (desc->iface) {
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case passive_serial:
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PRINTF ("%s: Launching Passive Serial Loader\n", __FUNCTION__);
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ret_val = ACEX1K_ps_load (desc, buf, bsize);
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break;
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/* Add new interface types here */
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default:
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printf ("%s: Unsupported interface type, %d\n",
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__FUNCTION__, desc->iface);
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}
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return ret_val;
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}
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int ACEX1K_dump (Altera_desc * desc, void *buf, size_t bsize)
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{
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int ret_val = FPGA_FAIL;
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switch (desc->iface) {
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case passive_serial:
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PRINTF ("%s: Launching Passive Serial Dump\n", __FUNCTION__);
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ret_val = ACEX1K_ps_dump (desc, buf, bsize);
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break;
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/* Add new interface types here */
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default:
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printf ("%s: Unsupported interface type, %d\n",
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__FUNCTION__, desc->iface);
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}
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return ret_val;
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}
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int ACEX1K_info( Altera_desc *desc )
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{
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return FPGA_SUCCESS;
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}
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/* ------------------------------------------------------------------------- */
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/* ACEX1K Passive Serial Generic Implementation */
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static int ACEX1K_ps_load (Altera_desc * desc, void *buf, size_t bsize)
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{
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int ret_val = FPGA_FAIL; /* assume the worst */
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Altera_ACEX1K_Passive_Serial_fns *fn = desc->iface_fns;
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int i;
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PRINTF ("%s: start with interface functions @ 0x%p\n",
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__FUNCTION__, fn);
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if (fn) {
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size_t bytecount = 0;
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unsigned char *data = (unsigned char *) buf;
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int cookie = desc->cookie; /* make a local copy */
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unsigned long ts; /* timestamp */
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PRINTF ("%s: Function Table:\n"
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"ptr:\t0x%p\n"
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"struct: 0x%p\n"
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"config:\t0x%p\n"
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"status:\t0x%p\n"
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"clk:\t0x%p\n"
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"data:\t0x%p\n"
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"done:\t0x%p\n\n",
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__FUNCTION__, &fn, fn, fn->config, fn->status,
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fn->clk, fn->data, fn->done);
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#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
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printf ("Loading FPGA Device %d...", cookie);
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#endif
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/*
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* Run the pre configuration function if there is one.
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*/
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if (*fn->pre) {
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(*fn->pre) (cookie);
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}
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/* Establish the initial state */
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(*fn->config) (TRUE, TRUE, cookie); /* Assert nCONFIG */
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udelay(2); /* T_cfg > 2us */
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/* nSTATUS should be asserted now */
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(*fn->done) (cookie);
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if ( !(*fn->status) (cookie) ) {
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puts ("** nSTATUS is not asserted.\n");
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(*fn->abort) (cookie);
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return FPGA_FAIL;
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}
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(*fn->config) (FALSE, TRUE, cookie); /* Deassert nCONFIG */
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udelay(2); /* T_cf2st1 < 4us */
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/* Wait for nSTATUS to be released (i.e. deasserted) */
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ts = get_timer (0); /* get current time */
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do {
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CONFIG_FPGA_DELAY ();
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if (get_timer (ts) > CONFIG_SYS_FPGA_WAIT) { /* check the time */
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puts ("** Timeout waiting for STATUS to go high.\n");
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(*fn->abort) (cookie);
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return FPGA_FAIL;
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}
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(*fn->done) (cookie);
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} while ((*fn->status) (cookie));
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/* Get ready for the burn */
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CONFIG_FPGA_DELAY ();
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/* Load the data */
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while (bytecount < bsize) {
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unsigned char val=0;
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#ifdef CONFIG_SYS_FPGA_CHECK_CTRLC
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if (ctrlc ()) {
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(*fn->abort) (cookie);
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return FPGA_FAIL;
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}
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#endif
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/* Altera detects an error if INIT goes low (active)
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while DONE is low (inactive) */
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#if 0 /* not yet implemented */
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if ((*fn->done) (cookie) == 0 && (*fn->init) (cookie)) {
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puts ("** CRC error during FPGA load.\n");
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(*fn->abort) (cookie);
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return (FPGA_FAIL);
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}
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#endif
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val = data [bytecount ++ ];
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i = 8;
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do {
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/* Deassert the clock */
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(*fn->clk) (FALSE, TRUE, cookie);
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CONFIG_FPGA_DELAY ();
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/* Write data */
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(*fn->data) ( (val & 0x01), TRUE, cookie);
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CONFIG_FPGA_DELAY ();
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/* Assert the clock */
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(*fn->clk) (TRUE, TRUE, cookie);
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CONFIG_FPGA_DELAY ();
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val >>= 1;
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i --;
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} while (i > 0);
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#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
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if (bytecount % (bsize / 40) == 0)
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putc ('.'); /* let them know we are alive */
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#endif
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}
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CONFIG_FPGA_DELAY ();
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#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
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putc (' '); /* terminate the dotted line */
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#endif
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/*
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* Checking FPGA's CONF_DONE signal - correctly booted ?
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*/
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if ( ! (*fn->done) (cookie) ) {
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puts ("** Booting failed! CONF_DONE is still deasserted.\n");
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(*fn->abort) (cookie);
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return (FPGA_FAIL);
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}
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/*
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* "DCLK must be clocked an additional 10 times fpr ACEX 1K..."
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*/
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for (i = 0; i < 12; i++) {
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CONFIG_FPGA_DELAY ();
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(*fn->clk) (TRUE, TRUE, cookie); /* Assert the clock pin */
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CONFIG_FPGA_DELAY ();
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(*fn->clk) (FALSE, TRUE, cookie); /* Deassert the clock pin */
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}
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ret_val = FPGA_SUCCESS;
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#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
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if (ret_val == FPGA_SUCCESS) {
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puts ("Done.\n");
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}
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else {
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puts ("Fail.\n");
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}
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#endif
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(*fn->post) (cookie);
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} else {
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printf ("%s: NULL Interface function table!\n", __FUNCTION__);
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}
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return ret_val;
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}
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static int ACEX1K_ps_dump (Altera_desc * desc, void *buf, size_t bsize)
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{
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/* Readback is only available through the Slave Parallel and */
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/* boundary-scan interfaces. */
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printf ("%s: Passive Serial Dumping is unavailable\n",
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__FUNCTION__);
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return FPGA_FAIL;
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}
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