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/*
* (C) Copyright 2014
* Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm/ppc4xx-gpio.h>
#include <asm/global_data.h>
#include "mpc8308.h"
#include <gdsys_fpga.h>
#define REFLECTION_TESTPATTERN 0xdede
#define REFLECTION_TESTPATTERN_INV (~REFLECTION_TESTPATTERN & 0xffff)
#ifdef CONFIG_SYS_FPGA_NO_RFL_HI
#define REFLECTION_TESTREG reflection_low
#else
#define REFLECTION_TESTREG reflection_high
#endif
DECLARE_GLOBAL_DATA_PTR;
int get_fpga_state(unsigned dev)
{
return gd->arch.fpga_state[dev];
}
void print_fpga_state(unsigned dev)
{
if (gd->arch.fpga_state[dev] & FPGA_STATE_DONE_FAILED)
puts(" Waiting for FPGA-DONE timed out.\n");
if (gd->arch.fpga_state[dev] & FPGA_STATE_REFLECTION_FAILED)
puts(" FPGA reflection test failed.\n");
}
int board_early_init_f(void)
{
unsigned k;
for (k = 0; k < CONFIG_SYS_FPGA_COUNT; ++k)
gd->arch.fpga_state[k] = 0;
return 0;
}
int board_early_init_r(void)
{
unsigned k;
unsigned ctr;
for (k = 0; k < CONFIG_SYS_FPGA_COUNT; ++k)
gd->arch.fpga_state[k] = 0;
/*
* reset FPGA
*/
mpc8308_init();
mpc8308_set_fpga_reset(1);
mpc8308_setup_hw();
for (k = 0; k < CONFIG_SYS_FPGA_COUNT; ++k) {
ctr = 0;
while (!mpc8308_get_fpga_done(k)) {
udelay(100000);
if (ctr++ > 5) {
gd->arch.fpga_state[k] |=
FPGA_STATE_DONE_FAILED;
break;
}
}
}
udelay(10);
mpc8308_set_fpga_reset(0);
for (k = 0; k < CONFIG_SYS_FPGA_COUNT; ++k) {
/*
* wait for fpga out of reset
*/
ctr = 0;
while (1) {
u16 val;
FPGA_SET_REG(k, reflection_low, REFLECTION_TESTPATTERN);
FPGA_GET_REG(k, REFLECTION_TESTREG, &val);
if (val == REFLECTION_TESTPATTERN_INV)
break;
udelay(100000);
if (ctr++ > 5) {
gd->arch.fpga_state[k] |=
FPGA_STATE_REFLECTION_FAILED;
break;
}
}
}
return 0;
}
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