mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-27 15:12:21 +00:00
256 lines
7.4 KiB
C
256 lines
7.4 KiB
C
/*
|
|
* (C) Copyright 2001-2003
|
|
* Matthias Fuchs, esd gmbh germany, matthias.fuchs@esd-electronics.com
|
|
* Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
|
|
*
|
|
* 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 <asm/processor.h>
|
|
#include <command.h>
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
#ifdef FPGA_DEBUG
|
|
#define DBG(x...) printf(x)
|
|
#else
|
|
#define DBG(x...)
|
|
#endif /* DEBUG */
|
|
|
|
#define MAX_ONES 226
|
|
|
|
#ifdef CONFIG_SYS_FPGA_PRG
|
|
# define FPGA_PRG CONFIG_SYS_FPGA_PRG /* FPGA program pin (ppc output)*/
|
|
# define FPGA_CLK CONFIG_SYS_FPGA_CLK /* FPGA clk pin (ppc output) */
|
|
# define FPGA_DATA CONFIG_SYS_FPGA_DATA /* FPGA data pin (ppc output) */
|
|
# define FPGA_DONE CONFIG_SYS_FPGA_DONE /* FPGA done pin (ppc input) */
|
|
# define FPGA_INIT CONFIG_SYS_FPGA_INIT /* FPGA init pin (ppc input) */
|
|
#else
|
|
# define FPGA_PRG 0x04000000 /* FPGA program pin (ppc output) */
|
|
# define FPGA_CLK 0x02000000 /* FPGA clk pin (ppc output) */
|
|
# define FPGA_DATA 0x01000000 /* FPGA data pin (ppc output) */
|
|
# define FPGA_DONE 0x00800000 /* FPGA done pin (ppc input) */
|
|
# define FPGA_INIT 0x00400000 /* FPGA init pin (ppc input) */
|
|
#endif
|
|
|
|
#define ERROR_FPGA_PRG_INIT_LOW -1 /* Timeout after PRG* asserted */
|
|
#define ERROR_FPGA_PRG_INIT_HIGH -2 /* Timeout after PRG* deasserted */
|
|
#define ERROR_FPGA_PRG_DONE -3 /* Timeout after programming */
|
|
|
|
#define SET_FPGA(data) out32(GPIO0_OR, data)
|
|
|
|
#define FPGA_WRITE_1 { \
|
|
SET_FPGA(FPGA_PRG | FPGA_DATA); /* set clock to 0 */ \
|
|
SET_FPGA(FPGA_PRG | FPGA_DATA); /* set data to 1 */ \
|
|
SET_FPGA(FPGA_PRG | FPGA_CLK | FPGA_DATA); /* set clock to 1 */ \
|
|
SET_FPGA(FPGA_PRG | FPGA_CLK | FPGA_DATA);} /* set data to 1 */
|
|
|
|
#define FPGA_WRITE_0 { \
|
|
SET_FPGA(FPGA_PRG | FPGA_DATA); /* set clock to 0 */ \
|
|
SET_FPGA(FPGA_PRG); /* set data to 0 */ \
|
|
SET_FPGA(FPGA_PRG | FPGA_CLK); /* set clock to 1 */ \
|
|
SET_FPGA(FPGA_PRG | FPGA_CLK | FPGA_DATA);} /* set data to 1 */
|
|
|
|
#if 0
|
|
static int fpga_boot (unsigned char *fpgadata, int size)
|
|
{
|
|
int i, index, len;
|
|
int count;
|
|
|
|
#ifdef CONFIG_SYS_FPGA_SPARTAN2
|
|
int j;
|
|
#else
|
|
unsigned char b;
|
|
int bit;
|
|
#endif
|
|
|
|
/* display infos on fpgaimage */
|
|
index = 15;
|
|
for (i = 0; i < 4; i++) {
|
|
len = fpgadata[index];
|
|
DBG ("FPGA: %s\n", &(fpgadata[index + 1]));
|
|
index += len + 3;
|
|
}
|
|
|
|
#ifdef CONFIG_SYS_FPGA_SPARTAN2
|
|
/* search for preamble 0xFFFFFFFF */
|
|
while (1) {
|
|
if ((fpgadata[index] == 0xff) && (fpgadata[index + 1] == 0xff)
|
|
&& (fpgadata[index + 2] == 0xff)
|
|
&& (fpgadata[index + 3] == 0xff))
|
|
break; /* preamble found */
|
|
else
|
|
index++;
|
|
}
|
|
#else
|
|
/* search for preamble 0xFF2X */
|
|
for (index = 0; index < size - 1; index++) {
|
|
if ((fpgadata[index] == 0xff)
|
|
&& ((fpgadata[index + 1] & 0xf0) == 0x30))
|
|
break;
|
|
}
|
|
index += 2;
|
|
#endif
|
|
|
|
DBG ("FPGA: configdata starts at position 0x%x\n", index);
|
|
DBG ("FPGA: length of fpga-data %d\n", size - index);
|
|
|
|
/*
|
|
* Setup port pins for fpga programming
|
|
*/
|
|
out32 (GPIO0_ODR, 0x00000000); /* no open drain pins */
|
|
out32 (GPIO0_TCR, in32 (GPIO0_TCR) | FPGA_PRG | FPGA_CLK | FPGA_DATA); /* setup for output */
|
|
out32 (GPIO0_OR, in32 (GPIO0_OR) | FPGA_PRG | FPGA_CLK | FPGA_DATA); /* set pins to high */
|
|
|
|
DBG ("%s, ",
|
|
((in32 (GPIO0_IR) & FPGA_DONE) == 0) ? "NOT DONE" : "DONE");
|
|
DBG ("%s\n",
|
|
((in32 (GPIO0_IR) & FPGA_INIT) == 0) ? "NOT INIT" : "INIT");
|
|
|
|
/*
|
|
* Init fpga by asserting and deasserting PROGRAM*
|
|
*/
|
|
SET_FPGA (FPGA_CLK | FPGA_DATA);
|
|
|
|
/* Wait for FPGA init line low */
|
|
count = 0;
|
|
while (in32 (GPIO0_IR) & FPGA_INIT) {
|
|
udelay (1000); /* wait 1ms */
|
|
/* Check for timeout - 100us max, so use 3ms */
|
|
if (count++ > 3) {
|
|
DBG ("FPGA: Booting failed!\n");
|
|
return ERROR_FPGA_PRG_INIT_LOW;
|
|
}
|
|
}
|
|
|
|
DBG ("%s, ",
|
|
((in32 (GPIO0_IR) & FPGA_DONE) == 0) ? "NOT DONE" : "DONE");
|
|
DBG ("%s\n",
|
|
((in32 (GPIO0_IR) & FPGA_INIT) == 0) ? "NOT INIT" : "INIT");
|
|
|
|
/* deassert PROGRAM* */
|
|
SET_FPGA (FPGA_PRG | FPGA_CLK | FPGA_DATA);
|
|
|
|
/* Wait for FPGA end of init period . */
|
|
count = 0;
|
|
while (!(in32 (GPIO0_IR) & FPGA_INIT)) {
|
|
udelay (1000); /* wait 1ms */
|
|
/* Check for timeout */
|
|
if (count++ > 3) {
|
|
DBG ("FPGA: Booting failed!\n");
|
|
return ERROR_FPGA_PRG_INIT_HIGH;
|
|
}
|
|
}
|
|
|
|
DBG ("%s, ",
|
|
((in32 (GPIO0_IR) & FPGA_DONE) == 0) ? "NOT DONE" : "DONE");
|
|
DBG ("%s\n",
|
|
((in32 (GPIO0_IR) & FPGA_INIT) == 0) ? "NOT INIT" : "INIT");
|
|
|
|
DBG ("write configuration data into fpga\n");
|
|
/* write configuration-data into fpga... */
|
|
|
|
#ifdef CONFIG_SYS_FPGA_SPARTAN2
|
|
/*
|
|
* Load uncompressed image into fpga
|
|
*/
|
|
for (i = index; i < size; i++) {
|
|
for (j = 0; j < 8; j++) {
|
|
if ((fpgadata[i] & 0x80) == 0x80) {
|
|
FPGA_WRITE_1;
|
|
} else {
|
|
FPGA_WRITE_0;
|
|
}
|
|
fpgadata[i] <<= 1;
|
|
}
|
|
}
|
|
#else /* ! CONFIG_SYS_FPGA_SPARTAN2 */
|
|
/* send 0xff 0x20 */
|
|
FPGA_WRITE_1;
|
|
FPGA_WRITE_1;
|
|
FPGA_WRITE_1;
|
|
FPGA_WRITE_1;
|
|
FPGA_WRITE_1;
|
|
FPGA_WRITE_1;
|
|
FPGA_WRITE_1;
|
|
FPGA_WRITE_1;
|
|
FPGA_WRITE_0;
|
|
FPGA_WRITE_0;
|
|
FPGA_WRITE_1;
|
|
FPGA_WRITE_0;
|
|
FPGA_WRITE_0;
|
|
FPGA_WRITE_0;
|
|
FPGA_WRITE_0;
|
|
FPGA_WRITE_0;
|
|
|
|
/*
|
|
** Bit_DeCompression
|
|
** Code 1 .. maxOnes : n '1's followed by '0'
|
|
** maxOnes + 1 .. maxOnes + 1 : n - 1 '1's no '0'
|
|
** maxOnes + 2 .. 254 : n - (maxOnes + 2) '0's followed by '1'
|
|
** 255 : '1'
|
|
*/
|
|
|
|
for (i = index; i < size; i++) {
|
|
b = fpgadata[i];
|
|
if ((b >= 1) && (b <= MAX_ONES)) {
|
|
for (bit = 0; bit < b; bit++) {
|
|
FPGA_WRITE_1;
|
|
}
|
|
FPGA_WRITE_0;
|
|
} else if (b == (MAX_ONES + 1)) {
|
|
for (bit = 1; bit < b; bit++) {
|
|
FPGA_WRITE_1;
|
|
}
|
|
} else if ((b >= (MAX_ONES + 2)) && (b <= 254)) {
|
|
for (bit = 0; bit < (b - (MAX_ONES + 2)); bit++) {
|
|
FPGA_WRITE_0;
|
|
}
|
|
FPGA_WRITE_1;
|
|
} else if (b == 255) {
|
|
FPGA_WRITE_1;
|
|
}
|
|
}
|
|
#endif /* CONFIG_SYS_FPGA_SPARTAN2 */
|
|
|
|
DBG ("%s, ",
|
|
((in32 (GPIO0_IR) & FPGA_DONE) == 0) ? "NOT DONE" : "DONE");
|
|
DBG ("%s\n",
|
|
((in32 (GPIO0_IR) & FPGA_INIT) == 0) ? "NOT INIT" : "INIT");
|
|
|
|
/*
|
|
* Check if fpga's DONE signal - correctly booted ?
|
|
*/
|
|
|
|
/* Wait for FPGA end of programming period . */
|
|
count = 0;
|
|
while (!(in32 (GPIO0_IR) & FPGA_DONE)) {
|
|
udelay (1000); /* wait 1ms */
|
|
/* Check for timeout */
|
|
if (count++ > 3) {
|
|
DBG ("FPGA: Booting failed!\n");
|
|
return ERROR_FPGA_PRG_DONE;
|
|
}
|
|
}
|
|
|
|
DBG ("FPGA: Booting successful!\n");
|
|
return 0;
|
|
}
|
|
#endif /* 0 */
|