upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/board/hymod/bsp.c

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/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.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
*
* hacked for Hymod FPGA support by Murray.Jensen@csiro.au, 29-Jan-01
*/
#include <common.h>
#include <command.h>
#include <net.h>
#include <asm/iopin_8260.h>
DECLARE_GLOBAL_DATA_PTR;
/*-----------------------------------------------------------------------
* Board Special Commands: FPGA load/store, EEPROM erase
*/
#if (CONFIG_COMMANDS & CFG_CMD_BSP) || defined(CONFIG_CMD_BSP)
#define LOAD_SUCCESS 0
#define LOAD_FAIL_NOCONF 1
#define LOAD_FAIL_NOINIT 2
#define LOAD_FAIL_NODONE 3
#define STORE_SUCCESS 0
/*
* Programming the Hymod FPGAs
*
* The 8260 io port config table is set up so that the INIT pin is
* held Low (Open Drain output 0) - this will delay the automatic
* Power-On config until INIT is released (by making it an input).
*
* If the FPGA has been programmed before, then the assertion of PROGRAM
* will initiate configuration (i.e. it begins clearing the RAM).
*
* When the FPGA is ready to receive configuration data (either after
* releasing INIT after Power-On, or after asserting PROGRAM), it will
* pull INIT high.
*
* Notes from Paul Dunn:
*
* 1. program pin should be forced low for >= 300ns
* (about 20 bus clock cycles minimum).
*
* 2. then wait for init to go high, which signals
* that the FPGA has cleared its internal memory
* and is ready to load
*
* 3. perform load writes of entire config file
*
* 4. wait for done to go high, which should be
* within a few bus clock cycles. If done has not
* gone high after reasonable period, then load
* has not worked (wait several ms?)
*/
int
fpga_load (int mezz, uchar *addr, ulong size)
{
hymod_conf_t *cp = &gd->bd->bi_hymod_conf;
xlx_info_t *fp;
xlx_iopins_t *fpgaio;
volatile uchar *fpgabase;
volatile uint cnt;
uchar *eaddr = addr + size;
int result;
if (mezz)
fp = &cp->mezz.xlx[0];
else
fp = &cp->main.xlx[0];
if (!fp->mmap.prog.exists)
return (LOAD_FAIL_NOCONF);
fpgabase = (uchar *)fp->mmap.prog.base;
fpgaio = &fp->iopins;
/* set enable HIGH if required */
if (fpgaio->enable_pin.flag)
iopin_set_high (&fpgaio->enable_pin);
/* ensure INIT is released (set it to be an input) */
iopin_set_in (&fpgaio->init_pin);
/* toggle PROG Low then High (will already be Low after Power-On) */
iopin_set_low (&fpgaio->prog_pin);
udelay (1); /* minimum 300ns - 1usec should do it */
iopin_set_high (&fpgaio->prog_pin);
/* wait for INIT High */
cnt = 0;
while (!iopin_is_high (&fpgaio->init_pin))
if (++cnt == 10000000) {
result = LOAD_FAIL_NOINIT;
goto done;
}
/* write configuration data */
while (addr < eaddr)
*fpgabase = *addr++;
/* wait for DONE High */
cnt = 0;
while (!iopin_is_high (&fpgaio->done_pin))
if (++cnt == 100000000) {
result = LOAD_FAIL_NODONE;
goto done;
}
/* success */
result = LOAD_SUCCESS;
done:
if (fpgaio->enable_pin.flag)
iopin_set_low (&fpgaio->enable_pin);
return (result);
}
/* ------------------------------------------------------------------------- */
int
do_fpga (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
uchar *addr, *save_addr;
ulong size;
int mezz, arg, result;
switch (argc) {
case 0:
case 1:
break;
case 2:
if (strcmp (argv[1], "info") == 0) {
printf ("\nHymod FPGA Info...\n");
printf ("\t\t\t\tAddress\t\tSize\n");
printf ("\tMain Configuration:\t0x%08x\t%d\n",
FPGA_MAIN_CFG_BASE, FPGA_MAIN_CFG_SIZE);
printf ("\tMain Register:\t\t0x%08x\t%d\n",
FPGA_MAIN_REG_BASE, FPGA_MAIN_REG_SIZE);
printf ("\tMain Port:\t\t0x%08x\t%d\n",
FPGA_MAIN_PORT_BASE, FPGA_MAIN_PORT_SIZE);
printf ("\tMezz Configuration:\t0x%08x\t%d\n",
FPGA_MEZZ_CFG_BASE, FPGA_MEZZ_CFG_SIZE);
return 0;
}
break;
case 3:
if (strcmp (argv[1], "store") == 0) {
addr = (uchar *) simple_strtoul (argv[2], NULL, 16);
save_addr = addr;
#if 0
/* fpga readback unimplemented */
while (more readback data)
*addr++ = *fpga;
result = error ? STORE_FAIL_XXX : STORE_SUCCESS;
#else
result = STORE_SUCCESS;
#endif
if (result == STORE_SUCCESS) {
printf ("SUCCEEDED (%d bytes)\n",
addr - save_addr);
return 0;
} else
printf ("FAILED (%d bytes)\n",
addr - save_addr);
return 1;
}
break;
case 4:
if (strcmp (argv[1], "tftp") == 0) {
copy_filename (BootFile, argv[2], sizeof (BootFile));
load_addr = simple_strtoul (argv[3], NULL, 16);
NetBootFileXferSize = 0;
if (NetLoop (TFTP) <= 0) {
printf ("tftp transfer failed - aborting "
"fgpa load\n");
return 1;
}
if (NetBootFileXferSize == 0) {
printf ("can't determine file size - "
"aborting fpga load\n");
return 1;
}
printf ("File transfer succeeded - "
"beginning fpga load...");
result = fpga_load (0, (uchar *) load_addr,
NetBootFileXferSize);
if (result == LOAD_SUCCESS) {
printf ("SUCCEEDED\n");
return 0;
} else if (result == LOAD_FAIL_NOCONF)
printf ("FAILED (no CONF)\n");
else if (result == LOAD_FAIL_NOINIT)
printf ("FAILED (no INIT)\n");
else
printf ("FAILED (no DONE)\n");
return 1;
}
/* fall through ... */
case 5:
if (strcmp (argv[1], "load") == 0) {
if (argc == 5) {
if (strcmp (argv[2], "main") == 0)
mezz = 0;
else if (strcmp (argv[2], "mezz") == 0)
mezz = 1;
else {
printf ("FPGA type must be either "
"`main' or `mezz'\n");
return 1;
}
arg = 3;
} else {
mezz = 0;
arg = 2;
}
addr = (uchar *) simple_strtoul (argv[arg++], NULL, 16);
size = (ulong) simple_strtoul (argv[arg], NULL, 16);
result = fpga_load (mezz, addr, size);
if (result == LOAD_SUCCESS) {
printf ("SUCCEEDED\n");
return 0;
} else if (result == LOAD_FAIL_NOCONF)
printf ("FAILED (no CONF)\n");
else if (result == LOAD_FAIL_NOINIT)
printf ("FAILED (no INIT)\n");
else
printf ("FAILED (no DONE)\n");
return 1;
}
break;
default:
break;
}
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
U_BOOT_CMD(
fpga, 6, 1, do_fpga,
"fpga - FPGA sub-system\n",
"load [type] addr size\n"
" - write the configuration data at memory address `addr',\n"
" size `size' bytes, into the FPGA of type `type' (either\n"
" `main' or `mezz', default `main'). e.g.\n"
" `fpga load 100000 7d8f'\n"
" loads the main FPGA with config data at address 100000\n"
" HEX, size 7d8f HEX (32143 DEC) bytes\n"
"fpga tftp file addr\n"
" - transfers `file' from the tftp server into memory at\n"
" address `addr', then writes the entire file contents\n"
" into the main FPGA\n"
"fpga store addr\n"
" - read configuration data from the main FPGA (the mezz\n"
" FPGA is write-only), into address `addr'. There must be\n"
" enough memory available at `addr' to hold all the config\n"
" data - the size of which is determined by VC:???\n"
"fpga info\n"
" - print information about the Hymod FPGA, namely the\n"
" memory addresses at which the four FPGA local bus\n"
" address spaces appear in the physical address space\n"
);
/* ------------------------------------------------------------------------- */
int
do_eecl (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
uchar data[HYMOD_EEPROM_SIZE];
uint addr = CFG_I2C_EEPROM_ADDR;
switch (argc) {
case 1:
addr |= HYMOD_EEOFF_MAIN;
break;
case 2:
if (strcmp (argv[1], "main") == 0) {
addr |= HYMOD_EEOFF_MAIN;
break;
}
if (strcmp (argv[1], "mezz") == 0) {
addr |= HYMOD_EEOFF_MEZZ;
break;
}
/* fall through ... */
default:
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
memset (data, 0, HYMOD_EEPROM_SIZE);
eeprom_write (addr, 0, data, HYMOD_EEPROM_SIZE);
return 0;
}
U_BOOT_CMD(
eeclear, 1, 0, do_eecl,
"eeclear - Clear the eeprom on a Hymod board \n",
"[type]\n"
" - write zeroes into the EEPROM on the board of type `type'\n"
" (`type' is either `main' or `mezz' - default `main')\n"
" Note: the EEPROM write enable jumper must be installed\n"
);
/* ------------------------------------------------------------------------- */
int
do_htest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
#if 0
int rc;
#endif
#ifdef CONFIG_ETHER_LOOPBACK_TEST
extern void eth_loopback_test (void);
#endif /* CONFIG_ETHER_LOOPBACK_TEST */
printf ("HYMOD tests - ensure loopbacks etc. are connected\n\n");
#if 0
/* Load FPGA with test program */
printf ("Loading test FPGA program ...");
rc = fpga_load (0, test_bitfile, sizeof (test_bitfile));
switch (rc) {
case LOAD_SUCCESS:
printf (" SUCCEEDED\n");
break;
case LOAD_FAIL_NOCONF:
printf (" FAILED (no configuration space defined)\n");
return 1;
case LOAD_FAIL_NOINIT:
printf (" FAILED (timeout - no INIT signal seen)\n");
return 1;
case LOAD_FAIL_NODONE:
printf (" FAILED (timeout - no DONE signal seen)\n");
return 1;
default:
printf (" FAILED (unknown return code from fpga_load\n");
return 1;
}
/* run Local Bus <=> Xilinx tests */
/* tell Xilinx to run ZBT Ram, High Speed serial and Mezzanine tests */
/* run SDRAM test */
#endif
#ifdef CONFIG_ETHER_LOOPBACK_TEST
/* run Ethernet test */
eth_loopback_test ();
#endif /* CONFIG_ETHER_LOOPBACK_TEST */
return 0;
}
#endif /* CFG_CMD_BSP */
/* ------------------------------------------------------------------------- */