6bfd81c339
In case of booting from serial loader (USB) we want to always use the default environment in order to get a defined state that is independent of any environment stored in persistent memory. This way we can avoid corruption of the boot process during development and manufacturing by existing environment settings in flash. Signed-off-by: Eberhard Stoll <eberhard.stoll@kontron.de> Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
120 lines
2.2 KiB
C
120 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018 Kontron Electronics GmbH
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*/
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#include <asm/arch/clock.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/arch-mx6/imx-regs.h>
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#include <asm/global_data.h>
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#include <env.h>
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#include <env_internal.h>
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#include <fdt_support.h>
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#include <phy.h>
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#include "sl-mx6ul-common.h"
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DECLARE_GLOBAL_DATA_PTR;
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int dram_init(void)
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{
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gd->ram_size = imx_ddr_size();
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return 0;
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}
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int ft_board_setup(void *blob, struct bd_info *bd)
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{
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/*
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* Overwrite the memory size in the devicetree that is
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* passed to the kernel with the actual size detected.
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*/
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return fdt_fixup_memory(blob, PHYS_SDRAM, gd->ram_size);
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}
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static int setup_fec(void)
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{
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struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
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int ret;
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/*
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* Use 50M anatop loopback REF_CLK1 for ENET1,
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* clear gpr1[13], set gpr1[17].
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*/
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clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC1_MASK,
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IOMUX_GPR1_FEC1_CLOCK_MUX1_SEL_MASK);
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/*
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* Use 50M anatop loopback REF_CLK2 for ENET2,
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* clear gpr1[14], set gpr1[18].
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*/
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clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC2_MASK,
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IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK);
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ret = enable_fec_anatop_clock(0, ENET_50MHZ);
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if (ret)
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return ret;
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ret = enable_fec_anatop_clock(1, ENET_50MHZ);
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if (ret)
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return ret;
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return 0;
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}
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int board_phy_config(struct phy_device *phydev)
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{
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phy_write(phydev, MDIO_DEVAD_NONE, 0x1f, 0x8190);
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if (phydev->drv->config)
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phydev->drv->config(phydev);
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return 0;
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}
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int board_early_init_f(void)
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{
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enable_qspi_clk(0);
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return 0;
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}
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int board_init(void)
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{
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/* Address of boot parameters */
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gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
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setup_fec();
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return 0;
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}
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int board_late_init(void)
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{
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if (is_boot_from_usb()) {
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env_set("bootdelay", "0");
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env_set("bootcmd", "fastboot 0");
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}
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return 0;
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}
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enum env_location env_get_location(enum env_operation op, int prio)
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{
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if (prio)
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return ENVL_UNKNOWN;
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if (CONFIG_IS_ENABLED(ENV_IS_NOWHERE) && is_boot_from_usb())
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return ENVL_NOWHERE;
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if (sl_mx6ul_is_spi_nor_boot() && CONFIG_IS_ENABLED(ENV_IS_IN_SPI_FLASH))
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return ENVL_SPI_FLASH;
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else if (CONFIG_IS_ENABLED(ENV_IS_IN_MMC))
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return ENVL_MMC;
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if (CONFIG_IS_ENABLED(ENV_IS_NOWHERE))
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return ENVL_NOWHERE;
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return ENVL_UNKNOWN;
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}
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