u-boot/board/matrix_vision/mvbc_p/fpga.c
Peter Tyser 6385b28116 fpga: Remove relocation fixups
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>
2009-10-03 10:17:56 +02:00

174 lines
3.6 KiB
C

/*
* (C) Copyright 2002
* Rich Ireland, Enterasys Networks, rireland@enterasys.com.
* Keith Outwater, keith_outwater@mvis.com.
*
* (C) Copyright 2008
* Andre Schwarz, Matrix Vision GmbH, andre.schwarz@matrix-vision.de
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*/
#include <common.h>
#include <ACEX1K.h>
#include <command.h>
#include "fpga.h"
#include "mvbc_p.h"
#ifdef FPGA_DEBUG
#define fpga_debug(fmt, args...) printf("%s: "fmt, __func__, ##args)
#else
#define fpga_debug(fmt, args...)
#endif
Altera_CYC2_Passive_Serial_fns altera_fns = {
fpga_null_fn,
fpga_config_fn,
fpga_status_fn,
fpga_done_fn,
fpga_wr_fn,
fpga_null_fn,
fpga_null_fn,
};
Altera_desc cyclone2 = {
Altera_CYC2,
passive_serial,
Altera_EP2C8_SIZE,
(void *) &altera_fns,
NULL,
};
DECLARE_GLOBAL_DATA_PTR;
int mvbc_p_init_fpga(void)
{
fpga_debug("Initialize FPGA interface\n");
fpga_init();
fpga_add(fpga_altera, &cyclone2);
fpga_config_fn(0, 1, 0);
udelay(60);
return 1;
}
int fpga_null_fn(int cookie)
{
return 0;
}
int fpga_config_fn(int assert, int flush, int cookie)
{
struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio*)MPC5XXX_GPIO;
u32 dvo = gpio->simple_dvo;
fpga_debug("SET config : %s\n", assert ? "low" : "high");
if (assert)
dvo |= FPGA_CONFIG;
else
dvo &= ~FPGA_CONFIG;
if (flush)
gpio->simple_dvo = dvo;
return assert;
}
int fpga_done_fn(int cookie)
{
struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio*)MPC5XXX_GPIO;
int result = 0;
udelay(10);
fpga_debug("CONF_DONE check ... ");
if (gpio->simple_ival & FPGA_CONF_DONE) {
fpga_debug("high\n");
result = 1;
} else
fpga_debug("low\n");
return result;
}
int fpga_status_fn(int cookie)
{
struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio*)MPC5XXX_GPIO;
int result = 0;
fpga_debug("STATUS check ... ");
if (gpio->sint_ival & FPGA_STATUS) {
fpga_debug("high\n");
result = 1;
} else
fpga_debug("low\n");
return result;
}
int fpga_clk_fn(int assert_clk, int flush, int cookie)
{
struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio*)MPC5XXX_GPIO;
u32 dvo = gpio->simple_dvo;
fpga_debug("CLOCK %s\n", assert_clk ? "high" : "low");
if (assert_clk)
dvo |= FPGA_CCLK;
else
dvo &= ~FPGA_CCLK;
if (flush)
gpio->simple_dvo = dvo;
return assert_clk;
}
static inline int _write_fpga(u8 val)
{
int i;
struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio*)MPC5XXX_GPIO;
u32 dvo = gpio->simple_dvo;
for (i=0; i<8; i++) {
dvo &= ~FPGA_CCLK;
gpio->simple_dvo = dvo;
dvo &= ~FPGA_DIN;
if (val & 1)
dvo |= FPGA_DIN;
gpio->simple_dvo = dvo;
dvo |= FPGA_CCLK;
gpio->simple_dvo = dvo;
val >>= 1;
}
return 0;
}
int fpga_wr_fn(void *buf, size_t len, int flush, int cookie)
{
unsigned char *data = (unsigned char *) buf;
int i;
fpga_debug("fpga_wr: buf %p / size %d\n", buf, len);
for (i = 0; i < len; i++)
_write_fpga(data[i]);
fpga_debug("\n");
return FPGA_SUCCESS;
}