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/*
* Copyright 2015 - 2016 Xilinx, Inc.
*
* Michal Simek <michal.simek@xilinx.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <debug_uart.h>
#include <spl.h>
#include <asm/io.h>
#include <asm/spl.h>
#include <asm/arch/hardware.h>
#include <asm/arch/sys_proto.h>
void board_init_f(ulong dummy)
{
psu_init();
board_early_init_r();
#ifdef CONFIG_DEBUG_UART
/* Uart debug for sure */
debug_uart_init();
puts("Debug uart enabled\n"); /* or printch() */
#endif
/* Delay is required for clocks to be propagated */
udelay(1000000);
/* Clear the BSS */
memset(__bss_start, 0, __bss_end - __bss_start);
/* No need to call timer init - it is empty for ZynqMP */
board_init_r(NULL, 0);
}
static void ps_mode_reset(ulong mode)
{
writel(mode << ZYNQMP_CRL_APB_BOOT_PIN_CTRL_OUT_EN_SHIFT,
&crlapb_base->boot_pin_ctrl);
udelay(5);
writel(mode << ZYNQMP_CRL_APB_BOOT_PIN_CTRL_OUT_VAL_SHIFT |
mode << ZYNQMP_CRL_APB_BOOT_PIN_CTRL_OUT_EN_SHIFT,
&crlapb_base->boot_pin_ctrl);
}
/*
* Set default PS_MODE1 which is used for USB ULPI phy reset
* Also other resets can be connected to this certain pin
*/
#ifndef MODE_RESET
# define MODE_RESET PS_MODE1
#endif
#ifdef CONFIG_SPL_BOARD_INIT
void spl_board_init(void)
{
preloader_console_init();
ps_mode_reset(MODE_RESET);
board_init();
}
#endif
u32 spl_boot_device(void)
{
u32 reg = 0;
u8 bootmode;
#if defined(CONFIG_SPL_ZYNQMP_ALT_BOOTMODE_ENABLED)
/* Change default boot mode at run-time */
writel(BOOT_MODE_USE_ALT |
CONFIG_SPL_ZYNQMP_ALT_BOOTMODE << BOOT_MODE_ALT_SHIFT,
&crlapb_base->boot_mode);
#endif
reg = readl(&crlapb_base->boot_mode);
bootmode = reg & BOOT_MODES_MASK;
switch (bootmode) {
case JTAG_MODE:
return BOOT_DEVICE_RAM;
#ifdef CONFIG_SPL_MMC_SUPPORT
case EMMC_MODE:
case SD_MODE:
case SD_MODE1:
return BOOT_DEVICE_MMC1;
#endif
#ifdef CONFIG_SPL_DFU_SUPPORT
case USB_MODE:
return BOOT_DEVICE_DFU;
#endif
default:
printf("Invalid Boot Mode:0x%x\n", bootmode);
break;
}
return 0;
}
u32 spl_boot_mode(const u32 boot_device)
{
switch (spl_boot_device()) {
case BOOT_DEVICE_RAM:
return 0;
case BOOT_DEVICE_MMC1:
return MMCSD_MODE_FS;
default:
puts("spl: error: unsupported device\n");
hang();
}
}
__weak void psu_init(void)
{
/*
* This function is overridden by the one in
* board/xilinx/zynqmp/(platform)/psu_init_gpl.c, if it exists.
*/
}
#ifdef CONFIG_SPL_OS_BOOT
int spl_start_uboot(void)
{
return 0;
}
#endif
#ifdef CONFIG_SPL_LOAD_FIT
int board_fit_config_name_match(const char *name)
{
/* Just empty function now - can't decide what to choose */
debug("%s: %s\n", __func__, name);
return 0;
}
#endif
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