u-boot-brain/arch/arm/mach-socfpga/spl.c

/*
 *  Copyright (C) 2012 Altera Corporation <www.altera.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <asm/io.h>
#include <asm/pl310.h>
#include <asm/u-boot.h>
#include <asm/utils.h>
#include <image.h>
#include <asm/arch/reset_manager.h>
#include <spl.h>
#include <asm/arch/system_manager.h>
#include <asm/arch/freeze_controller.h>
#include <asm/arch/clock_manager.h>
#include <asm/arch/scan_manager.h>
#include <asm/arch/sdram.h>

DECLARE_GLOBAL_DATA_PTR;

static struct pl310_regs *const pl310 =
	(struct pl310_regs *)CONFIG_SYS_PL310_BASE;

#define MAIN_VCO_BASE (					\
	(CONFIG_HPS_MAINPLLGRP_VCO_DENOM <<		\
		CLKMGR_MAINPLLGRP_VCO_DENOM_OFFSET) |	\
	(CONFIG_HPS_MAINPLLGRP_VCO_NUMER <<		\
		CLKMGR_MAINPLLGRP_VCO_NUMER_OFFSET)	\
	)

#define PERI_VCO_BASE (					\
	(CONFIG_HPS_PERPLLGRP_VCO_PSRC <<		\
		CLKMGR_PERPLLGRP_VCO_PSRC_OFFSET) |	\
	(CONFIG_HPS_PERPLLGRP_VCO_DENOM <<		\
		CLKMGR_PERPLLGRP_VCO_DENOM_OFFSET) |	\
	(CONFIG_HPS_PERPLLGRP_VCO_NUMER <<		\
		CLKMGR_PERPLLGRP_VCO_NUMER_OFFSET)	\
	)

#define SDR_VCO_BASE (					\
	(CONFIG_HPS_SDRPLLGRP_VCO_SSRC <<		\
		CLKMGR_SDRPLLGRP_VCO_SSRC_OFFSET) |	\
	(CONFIG_HPS_SDRPLLGRP_VCO_DENOM <<		\
		CLKMGR_SDRPLLGRP_VCO_DENOM_OFFSET) |	\
	(CONFIG_HPS_SDRPLLGRP_VCO_NUMER <<		\
		CLKMGR_SDRPLLGRP_VCO_NUMER_OFFSET)	\
	)

void board_init_f(ulong dummy)
{
	struct socfpga_system_manager *sysmgr_regs =
		(struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
	unsigned long reg;
	/*
	 * First C code to run. Clear fake OCRAM ECC first as SBE
	 * and DBE might triggered during power on
	 */
	reg = readl(&sysmgr_regs->eccgrp_ocram);
	if (reg & SYSMGR_ECC_OCRAM_SERR)
		writel(SYSMGR_ECC_OCRAM_SERR | SYSMGR_ECC_OCRAM_EN,
		       &sysmgr_regs->eccgrp_ocram);
	if (reg & SYSMGR_ECC_OCRAM_DERR)
		writel(SYSMGR_ECC_OCRAM_DERR  | SYSMGR_ECC_OCRAM_EN,
		       &sysmgr_regs->eccgrp_ocram);

	memset(__bss_start, 0, __bss_end - __bss_start);

	/* Remap SDRAM to 0x0 */
	writel(0x1, &pl310->pl310_addr_filter_start);

	board_init_r(NULL, 0);
}

u32 spl_boot_device(void)
{
	return BOOT_DEVICE_RAM;
}

/*
 * Board initialization after bss clearance
 */
void spl_board_init(void)
{
	unsigned long sdram_size;
#ifndef CONFIG_SOCFPGA_VIRTUAL_TARGET
	cm_config_t cm_default_cfg = {
		/* main group */
		MAIN_VCO_BASE,
		(CONFIG_HPS_MAINPLLGRP_MPUCLK_CNT <<
			CLKMGR_MAINPLLGRP_MPUCLK_CNT_OFFSET),
		(CONFIG_HPS_MAINPLLGRP_MAINCLK_CNT <<
			CLKMGR_MAINPLLGRP_MAINCLK_CNT_OFFSET),
		(CONFIG_HPS_MAINPLLGRP_DBGATCLK_CNT <<
			CLKMGR_MAINPLLGRP_DBGATCLK_CNT_OFFSET),
		(CONFIG_HPS_MAINPLLGRP_MAINQSPICLK_CNT <<
			CLKMGR_MAINPLLGRP_MAINQSPICLK_CNT_OFFSET),
		(CONFIG_HPS_MAINPLLGRP_MAINNANDSDMMCCLK_CNT <<
			CLKMGR_PERPLLGRP_PERNANDSDMMCCLK_CNT_OFFSET),
		(CONFIG_HPS_MAINPLLGRP_CFGS2FUSER0CLK_CNT <<
			CLKMGR_MAINPLLGRP_CFGS2FUSER0CLK_CNT_OFFSET),
		(CONFIG_HPS_MAINPLLGRP_MAINDIV_L3MPCLK <<
			CLKMGR_MAINPLLGRP_MAINDIV_L3MPCLK_OFFSET) |
		(CONFIG_HPS_MAINPLLGRP_MAINDIV_L3SPCLK <<
			CLKMGR_MAINPLLGRP_MAINDIV_L3SPCLK_OFFSET) |
		(CONFIG_HPS_MAINPLLGRP_MAINDIV_L4MPCLK <<
			CLKMGR_MAINPLLGRP_MAINDIV_L4MPCLK_OFFSET) |
		(CONFIG_HPS_MAINPLLGRP_MAINDIV_L4SPCLK <<
			CLKMGR_MAINPLLGRP_MAINDIV_L4SPCLK_OFFSET),
		(CONFIG_HPS_MAINPLLGRP_DBGDIV_DBGATCLK <<
			CLKMGR_MAINPLLGRP_DBGDIV_DBGATCLK_OFFSET) |
		(CONFIG_HPS_MAINPLLGRP_DBGDIV_DBGCLK <<
			CLKMGR_MAINPLLGRP_DBGDIV_DBGCLK_OFFSET),
		(CONFIG_HPS_MAINPLLGRP_TRACEDIV_TRACECLK <<
			CLKMGR_MAINPLLGRP_TRACEDIV_TRACECLK_OFFSET),
		(CONFIG_HPS_MAINPLLGRP_L4SRC_L4MP <<
			CLKMGR_MAINPLLGRP_L4SRC_L4MP_OFFSET) |
		(CONFIG_HPS_MAINPLLGRP_L4SRC_L4SP <<
			CLKMGR_MAINPLLGRP_L4SRC_L4SP_OFFSET),

		/* peripheral group */
		PERI_VCO_BASE,
		(CONFIG_HPS_PERPLLGRP_EMAC0CLK_CNT <<
			CLKMGR_PERPLLGRP_EMAC0CLK_CNT_OFFSET),
		(CONFIG_HPS_PERPLLGRP_EMAC1CLK_CNT <<
			CLKMGR_PERPLLGRP_EMAC1CLK_CNT_OFFSET),
		(CONFIG_HPS_PERPLLGRP_PERQSPICLK_CNT <<
			CLKMGR_PERPLLGRP_PERQSPICLK_CNT_OFFSET),
		(CONFIG_HPS_PERPLLGRP_PERNANDSDMMCCLK_CNT <<
			CLKMGR_PERPLLGRP_PERNANDSDMMCCLK_CNT_OFFSET),
		(CONFIG_HPS_PERPLLGRP_PERBASECLK_CNT <<
			CLKMGR_PERPLLGRP_PERBASECLK_CNT_OFFSET),
		(CONFIG_HPS_PERPLLGRP_S2FUSER1CLK_CNT <<
			CLKMGR_PERPLLGRP_S2FUSER1CLK_CNT_OFFSET),
		(CONFIG_HPS_PERPLLGRP_DIV_USBCLK <<
			CLKMGR_PERPLLGRP_DIV_USBCLK_OFFSET) |
		(CONFIG_HPS_PERPLLGRP_DIV_SPIMCLK <<
			CLKMGR_PERPLLGRP_DIV_SPIMCLK_OFFSET) |
		(CONFIG_HPS_PERPLLGRP_DIV_CAN0CLK <<
			CLKMGR_PERPLLGRP_DIV_CAN0CLK_OFFSET) |
		(CONFIG_HPS_PERPLLGRP_DIV_CAN1CLK <<
			CLKMGR_PERPLLGRP_DIV_CAN1CLK_OFFSET),
		(CONFIG_HPS_PERPLLGRP_GPIODIV_GPIODBCLK <<
			CLKMGR_PERPLLGRP_GPIODIV_GPIODBCLK_OFFSET),
		(CONFIG_HPS_PERPLLGRP_SRC_QSPI <<
			CLKMGR_PERPLLGRP_SRC_QSPI_OFFSET) |
		(CONFIG_HPS_PERPLLGRP_SRC_NAND <<
			CLKMGR_PERPLLGRP_SRC_NAND_OFFSET) |
		(CONFIG_HPS_PERPLLGRP_SRC_SDMMC <<
			CLKMGR_PERPLLGRP_SRC_SDMMC_OFFSET),

		/* sdram pll group */
		SDR_VCO_BASE,
		(CONFIG_HPS_SDRPLLGRP_DDRDQSCLK_PHASE <<
			CLKMGR_SDRPLLGRP_DDRDQSCLK_PHASE_OFFSET) |
		(CONFIG_HPS_SDRPLLGRP_DDRDQSCLK_CNT <<
			CLKMGR_SDRPLLGRP_DDRDQSCLK_CNT_OFFSET),
		(CONFIG_HPS_SDRPLLGRP_DDR2XDQSCLK_PHASE <<
			CLKMGR_SDRPLLGRP_DDR2XDQSCLK_PHASE_OFFSET) |
		(CONFIG_HPS_SDRPLLGRP_DDR2XDQSCLK_CNT <<
			CLKMGR_SDRPLLGRP_DDR2XDQSCLK_CNT_OFFSET),
		(CONFIG_HPS_SDRPLLGRP_DDRDQCLK_PHASE <<
			CLKMGR_SDRPLLGRP_DDRDQCLK_PHASE_OFFSET) |
		(CONFIG_HPS_SDRPLLGRP_DDRDQCLK_CNT <<
			CLKMGR_SDRPLLGRP_DDRDQCLK_CNT_OFFSET),
		(CONFIG_HPS_SDRPLLGRP_S2FUSER2CLK_PHASE <<
			CLKMGR_SDRPLLGRP_S2FUSER2CLK_PHASE_OFFSET) |
		(CONFIG_HPS_SDRPLLGRP_S2FUSER2CLK_CNT <<
			CLKMGR_SDRPLLGRP_S2FUSER2CLK_CNT_OFFSET),

	};

	debug("Freezing all I/O banks\n");
	/* freeze all IO banks */
	sys_mgr_frzctrl_freeze_req();

	socfpga_sdram_enable();
	socfpga_uart0_enable();
	socfpga_osc1timer_enable();

	timer_init();

	debug("Reconfigure Clock Manager\n");
	/* reconfigure the PLLs */
	cm_basic_init(&cm_default_cfg);

	/* Enable bootrom to configure IOs. */
	sysmgr_enable_warmrstcfgio();

	/* configure the IOCSR / IO buffer settings */
	if (scan_mgr_configure_iocsr())
		hang();

	/* configure the pin muxing through system manager */
	sysmgr_pinmux_init();
#endif /* CONFIG_SOCFPGA_VIRTUAL_TARGET */

	/* de-assert reset for peripherals and bridges based on handoff */
	reset_deassert_peripherals_handoff();

	debug("Unfreezing/Thaw all I/O banks\n");
	/* unfreeze / thaw all IO banks */
	sys_mgr_frzctrl_thaw_req();

	/* enable console uart printing */
	preloader_console_init();

	if (sdram_mmr_init_full(0xffffffff) != 0) {
		puts("SDRAM init failed.\n");
		hang();
	}

	debug("SDRAM: Calibrating PHY\n");
	/* SDRAM calibration */
	if (sdram_calibration_full() == 0) {
		puts("SDRAM calibration failed.\n");
		hang();
	}

	sdram_size = sdram_calculate_size();
	debug("SDRAM: %ld MiB\n", sdram_size >> 20);

	/* Sanity check ensure correct SDRAM size specified */
	if (get_ram_size(0, sdram_size) != sdram_size) {
		puts("SDRAM size check failed!\n");
		hang();
	}
}