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https://github.com/brain-hackers/u-boot-brain
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![Wolfgang Denk](/assets/img/avatar_default.png)
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
206 lines
5.0 KiB
C
206 lines
5.0 KiB
C
/*
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* (C) Copyright 2006
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* Heiko Schocher, hs@denx.de
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* Based on ACE1XK.c
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h> /* core U-Boot definitions */
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#include <altera.h>
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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 CYC2_ps_load(Altera_desc *desc, const void *buf, size_t bsize);
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static int CYC2_ps_dump(Altera_desc *desc, const void *buf, size_t bsize);
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/* static int CYC2_ps_info( Altera_desc *desc ); */
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/* ------------------------------------------------------------------------- */
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/* CYCLON2 Generic Implementation */
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int CYC2_load(Altera_desc *desc, const 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 = CYC2_ps_load (desc, buf, bsize);
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break;
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case fast_passive_parallel:
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/* Fast Passive Parallel (FPP) and PS only differ in what is
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* done in the write() callback. Use the existing PS load
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* function for FPP, too.
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*/
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PRINTF ("%s: Launching Fast Passive Parallel Loader\n",
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__FUNCTION__);
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ret_val = CYC2_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 CYC2_dump(Altera_desc *desc, const 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 = CYC2_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 CYC2_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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/* CYCLON2 Passive Serial Generic Implementation */
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static int CYC2_ps_load(Altera_desc *desc, const 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_CYC2_Passive_Serial_fns *fn = desc->iface_fns;
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int ret = 0;
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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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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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"write:\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->write, 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) (false, true, cookie); /* De-assert nCONFIG */
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udelay(100);
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(*fn->config) (true, true, cookie); /* Assert nCONFIG */
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udelay(2); /* T_cfg > 2us */
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/* Wait for nSTATUS to be asserted */
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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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} while (!(*fn->status) (cookie));
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/* Get ready for the burn */
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CONFIG_FPGA_DELAY ();
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ret = (*fn->write) (buf, bsize, true, cookie);
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if (ret) {
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puts ("** Write failed.\n");
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(*fn->abort) (cookie);
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return FPGA_FAIL;
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}
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#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
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puts(" OK? ...");
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#endif
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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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#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
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puts(" OK\n");
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#endif
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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 CYC2_ps_dump(Altera_desc *desc, const 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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