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// SPDX-License-Identifier: GPL-2.0+
/*
* board.c
*
* Board functions for B&R BRPPT1
*
* Copyright (C) 2013 Hannes Schmelzer <oe5hpm@oevsv.at>
* Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com
*
*/
#include <config.h>
#include <bootcount.h>
#include <env.h>
#include <errno.h>
#include <init.h>
#include <spl.h>
#include <asm/arch/cpu.h>
#include <asm/arch/hardware.h>
#include <asm/arch/omap.h>
#include <asm/arch/ddr_defs.h>
#include <asm/arch/clock.h>
#include <asm/arch/gpio.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/mem.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <asm/emif.h>
#include <asm/gpio.h>
#include <i2c.h>
#include <power/tps65217.h>
#include "../common/bur_common.h"
#include <watchdog.h>
DECLARE_GLOBAL_DATA_PTR;
/* --------------------------------------------------------------------------*/
/* -- defines for GPIO -- */
#define REPSWITCH (0+20) /* GPIO0_20 */
#if defined(CONFIG_SPL_BUILD)
/* TODO: check ram-timing ! */
static const struct ddr_data ddr3_data = {
.datardsratio0 = MT41K256M16HA125E_RD_DQS,
.datawdsratio0 = MT41K256M16HA125E_WR_DQS,
.datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE,
.datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA,
};
static const struct cmd_control ddr3_cmd_ctrl_data = {
.cmd0csratio = MT41K256M16HA125E_RATIO,
.cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
.cmd1csratio = MT41K256M16HA125E_RATIO,
.cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
.cmd2csratio = MT41K256M16HA125E_RATIO,
.cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
};
static struct emif_regs ddr3_emif_reg_data = {
.sdram_config = MT41K256M16HA125E_EMIF_SDCFG,
.ref_ctrl = MT41K256M16HA125E_EMIF_SDREF,
.sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1,
.sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2,
.sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3,
.zq_config = MT41K256M16HA125E_ZQ_CFG,
.emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY,
};
static const struct ctrl_ioregs ddr3_ioregs = {
.cm0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
.cm1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
.cm2ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
.dt0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
.dt1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
};
#define OSC (V_OSCK/1000000)
static const struct dpll_params dpll_ddr3 = { 400, OSC-1, 1, -1, -1, -1, -1};
void am33xx_spl_board_init(void)
{
int rc;
struct cm_perpll *const cmper = (struct cm_perpll *)CM_PER;
/*struct cm_wkuppll *const cmwkup = (struct cm_wkuppll *)CM_WKUP;*/
struct cm_dpll *const cmdpll = (struct cm_dpll *)CM_DPLL;
/*
* in TRM they write a reset value of 1 (=CLK_M_OSC) for the
* CLKSEL_TIMER6_CLK Register, in fact reset value is 0, so we need set
* the source of timer6 clk to CLK_M_OSC
*/
writel(0x01, &cmdpll->clktimer6clk);
/* enable additional clocks of modules which are accessed later */
u32 *const clk_domains[] = {
&cmper->lcdcclkstctrl,
0
};
u32 *const clk_modules_tsspecific[] = {
&cmper->lcdclkctrl,
&cmper->timer5clkctrl,
&cmper->timer6clkctrl,
0
};
do_enable_clocks(clk_domains, clk_modules_tsspecific, 1);
/* setup I2C */
enable_i2c_pin_mux();
pmicsetup(0, 0);
/* peripheral reset */
rc = gpio_request(64 + 29, "GPMC_WAIT1");
if (rc != 0)
printf("cannot request GPMC_WAIT1 GPIO!\n");
rc = gpio_direction_output(64 + 29, 1);
if (rc != 0)
printf("cannot set GPMC_WAIT1 GPIO!\n");
rc = gpio_request(64 + 28, "GPMC_WAIT0");
if (rc != 0)
printf("cannot request GPMC_WAIT0 GPIO!\n");
rc = gpio_direction_output(64 + 28, 1);
if (rc != 0)
printf("cannot set GPMC_WAIT0 GPIO!\n");
}
const struct dpll_params *get_dpll_ddr_params(void)
{
return &dpll_ddr3;
}
void sdram_init(void)
{
config_ddr(400, &ddr3_ioregs,
&ddr3_data,
&ddr3_cmd_ctrl_data,
&ddr3_emif_reg_data, 0);
}
#endif /* CONFIG_SPL_BUILD */
/* Basic board specific setup. Pinmux has been handled already. */
int board_init(void)
{
#if defined(CONFIG_HW_WATCHDOG)
hw_watchdog_init();
#endif
gd->bd->bi_boot_params = CFG_SYS_SDRAM_BASE + 0x100;
return 0;
}
#ifdef CONFIG_BOARD_LATE_INIT
static char *bootmodeascii[16] = {
"BOOT", "reserved", "reserved", "reserved",
"RUN", "reserved", "reserved", "reserved",
"reserved", "reserved", "reserved", "reserved",
"PME", "reserved", "reserved", "DIAG",
};
int board_late_init(void)
{
unsigned char bmode = 0;
ulong bootcount = 0;
int rc;
bootcount = bootcount_load() & 0xF;
rc = gpio_request(REPSWITCH, "REPSWITCH");
if (rc != 0 || gpio_get_value(REPSWITCH) == 0 || bootcount == 12)
bmode = 12;
else if (bootcount > 0)
bmode = 0;
else
bmode = 4;
printf("Mode: %s\n", bootmodeascii[bmode & 0x0F]);
env_set_ulong("b_mode", bmode);
/* get sure that bootcmd isn't affected by any bootcount value */
env_set_ulong("bootlimit", 0);
return 0;
}
#endif /* CONFIG_BOARD_LATE_INIT */
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