C++ (Cpp) socfpga_sdram_remap_zeroの例

コード例 #1

ファイル: spl_a10.c プロジェクト: masahir0y/u-boot-yamada

void board_init_f(ulong dummy)
{
	dcache_disable();

	socfpga_init_security_policies();
	socfpga_sdram_remap_zero();

	/* Assert reset to all except L4WD0 and L4TIMER0 */
	socfpga_per_reset_all();
	socfpga_watchdog_disable();

	spl_early_init();

	/* Configure the clock based on handoff */
	cm_basic_init(gd->fdt_blob);

#ifdef CONFIG_HW_WATCHDOG
	/* release osc1 watchdog timer 0 from reset */
	socfpga_reset_deassert_osc1wd0();

	/* reconfigure and enable the watchdog */
	hw_watchdog_init();
	WATCHDOG_RESET();
#endif /* CONFIG_HW_WATCHDOG */

	config_dedicated_pins(gd->fdt_blob);
	WATCHDOG_RESET();
}

コード例 #2

ファイル: spl_gen5.c プロジェクト: CogSystems/u-boot

void board_init_f(ulong dummy)
{
	const struct cm_config *cm_default_cfg = cm_get_default_config();
	unsigned long sdram_size;
	unsigned long reg;
	int ret;

	/*
	 * 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);

	socfpga_sdram_remap_zero();

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

	/* Put everything into reset but L4WD0. */
	socfpga_per_reset_all();

	if (!socfpga_is_booting_from_fpga()) {
		/* Put FPGA bridges into reset too. */
		socfpga_bridges_reset(1);
	}

	socfpga_per_reset(SOCFPGA_RESET(SDR), 0);
	socfpga_per_reset(SOCFPGA_RESET(UART0), 0);
	socfpga_per_reset(SOCFPGA_RESET(OSC1TIMER0), 0);

	timer_init();

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

	/* Enable bootrom to configure IOs. */
	sysmgr_config_warmrstcfgio(1);

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

	sysmgr_config_warmrstcfgio(0);

	/* configure the pin muxing through system manager */
	sysmgr_config_warmrstcfgio(1);
	sysmgr_pinmux_init();
	sysmgr_config_warmrstcfgio(0);

	/* De-assert reset for peripherals and bridges based on handoff */
	reset_deassert_peripherals_handoff();
	socfpga_bridges_reset(0);

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

#ifdef CONFIG_DEBUG_UART
	socfpga_per_reset(SOCFPGA_RESET(UART0), 0);
	debug_uart_init();
#endif

	ret = spl_early_init();
	if (ret) {
		debug("spl_early_init() failed: %d\n", ret);
		hang();
	}

	/* 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();
	}

	if (!socfpga_is_booting_from_fpga())
		socfpga_bridges_reset(1);
}