u-boot/drivers/fpga/cyclon2.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

204 lines
5 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2006
* Heiko Schocher, hs@denx.de
* Based on ACE1XK.c
*/
#include <common.h> /* core U-Boot definitions */
#include <altera.h>
#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 CYC2_ps_load(Altera_desc *desc, const void *buf, size_t bsize);
static int CYC2_ps_dump(Altera_desc *desc, const void *buf, size_t bsize);
/* static int CYC2_ps_info( Altera_desc *desc ); */
/* ------------------------------------------------------------------------- */
/* CYCLON2 Generic Implementation */
int CYC2_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 = CYC2_ps_load (desc, buf, bsize);
break;
case fast_passive_parallel:
/* Fast Passive Parallel (FPP) and PS only differ in what is
* done in the write() callback. Use the existing PS load
* function for FPP, too.
*/
PRINTF ("%s: Launching Fast Passive Parallel Loader\n",
__FUNCTION__);
ret_val = CYC2_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 CYC2_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 = CYC2_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 CYC2_info( Altera_desc *desc )
{
return FPGA_SUCCESS;
}
/* ------------------------------------------------------------------------- */
/* CYCLON2 Passive Serial Generic Implementation */
static int CYC2_ps_load(Altera_desc *desc, const void *buf, size_t bsize)
{
int ret_val = FPGA_FAIL; /* assume the worst */
Altera_CYC2_Passive_Serial_fns *fn = desc->iface_fns;
int ret = 0;
PRINTF ("%s: start with interface functions @ 0x%p\n",
__FUNCTION__, fn);
if (fn) {
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"
"write:\t0x%p\n"
"done:\t0x%p\n\n",
__FUNCTION__, &fn, fn, fn->config, fn->status,
fn->write, 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) (false, true, cookie); /* De-assert nCONFIG */
udelay(100);
(*fn->config) (true, true, cookie); /* Assert nCONFIG */
udelay(2); /* T_cfg > 2us */
/* Wait for nSTATUS to be asserted */
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;
}
} while (!(*fn->status) (cookie));
/* Get ready for the burn */
CONFIG_FPGA_DELAY ();
ret = (*fn->write) (buf, bsize, true, cookie);
if (ret) {
puts ("** Write failed.\n");
(*fn->abort) (cookie);
return FPGA_FAIL;
}
#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
puts(" OK? ...");
#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);
}
#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
puts(" OK\n");
#endif
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 CYC2_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;
}