text: /*
   * boot-common.c
   *
   * Common bootmode functions for omap based boards
   *
   * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #include <common.h>
  #include <ahci.h>
  #include <spl.h>
  #include <asm/omap_common.h>
  #include <asm/arch/omap.h>
  #include <asm/arch/mmc_host_def.h>
  #include <asm/arch/sys_proto.h>
  #include <watchdog.h>
  #include <scsi.h>
  #include <i2c.h>
  
  DECLARE_GLOBAL_DATA_PTR;
  
  __weak u32 omap_sys_boot_device(void)
  {
  	return BOOT_DEVICE_NONE;
  }
  
  void save_omap_boot_params(void)
  {
  	u32 boot_params = *((u32 *)OMAP_SRAM_SCRATCH_BOOT_PARAMS);
  	struct omap_boot_parameters *omap_boot_params;
  	int sys_boot_device = 0;
  	u32 boot_device;
  	u32 boot_mode;
  
  	if ((boot_params < NON_SECURE_SRAM_START) ||
  	    (boot_params > NON_SECURE_SRAM_END))
  		return;
  
  	omap_boot_params = (struct omap_boot_parameters *)boot_params;
  
  	boot_device = omap_boot_params->boot_device;
  	boot_mode = MMCSD_MODE_UNDEFINED;
  
  	/* Boot device */
  
  #ifdef BOOT_DEVICE_NAND_I2C
  	/*
  	 * Re-map NAND&I2C boot-device to the "normal" NAND boot-device.
  	 * Otherwise the SPL boot IF can't handle this device correctly.
  	 * Somehow booting with Hynix 4GBit NAND H27U4G8 on Siemens
  	 * Draco leads to this boot-device passed to SPL from the BootROM.
  	 */
  	if (boot_device == BOOT_DEVICE_NAND_I2C)
  		boot_device = BOOT_DEVICE_NAND;
  #endif
  #ifdef BOOT_DEVICE_QSPI_4
  	/*
  	 * We get different values for QSPI_1 and QSPI_4 being used, but
  	 * don't actually care about this difference.  Rather than
  	 * mangle the later code, if we're coming in as QSPI_4 just
  	 * change to the QSPI_1 value.
  	 */
  	if (boot_device == BOOT_DEVICE_QSPI_4)
  		boot_device = BOOT_DEVICE_SPI;
  #endif
  #ifdef CONFIG_TI816X
  	/*
  	 * On PG2.0 and later TI816x the values we get when booting are not the
  	 * same as on PG1.0, which is what the defines are based on.  Update
  	 * them as needed.
  	 */
  	if (get_cpu_rev() != 1) {
  		if (boot_device == 0x05) {
  			omap_boot_params->boot_device = BOOT_DEVICE_NAND;
  			boot_device = BOOT_DEVICE_NAND;
  		}
  		if (boot_device == 0x08) {
  			omap_boot_params->boot_device = BOOT_DEVICE_MMC1;
  			boot_device = BOOT_DEVICE_MMC1;
  		}
  	}
  #endif
  	/*
  	 * When booting from peripheral booting, the boot device is not usable
  	 * as-is (unless there is support for it), so the boot device is instead
  	 * figured out using the SYS_BOOT pins.
  	 */
  	switch (boot_device) {
  #if defined(BOOT_DEVICE_UART) && !defined(CONFIG_SPL_YMODEM_SUPPORT)
  		case BOOT_DEVICE_UART:
  			sys_boot_device = 1;
  			break;
  #endif
  #if defined(BOOT_DEVICE_USB) && !defined(CONFIG_SPL_USB_SUPPORT)
  		case BOOT_DEVICE_USB:
  			sys_boot_device = 1;
  			break;
  #endif
  #if defined(BOOT_DEVICE_USBETH) && !defined(CONFIG_SPL_USBETH_SUPPORT)
  		case BOOT_DEVICE_USBETH:
  			sys_boot_device = 1;
  			break;
  #endif
  #if defined(BOOT_DEVICE_CPGMAC) && !defined(CONFIG_SPL_ETH_SUPPORT)
  		case BOOT_DEVICE_CPGMAC:
  			sys_boot_device = 1;
  			break;
  #endif
  #if defined(BOOT_DEVICE_DFU) && !defined(CONFIG_SPL_DFU_SUPPORT)
  		case BOOT_DEVICE_DFU:
  			sys_boot_device = 1;
  			break;
  #endif
  	}
  
  	if (sys_boot_device) {
  		boot_device = omap_sys_boot_device();
  
  		/* MMC raw mode will fallback to FS mode. */
  		if ((boot_device >= MMC_BOOT_DEVICES_START) &&
  		    (boot_device <= MMC_BOOT_DEVICES_END))
  			boot_mode = MMCSD_MODE_RAW;
  	}
  
  	gd->arch.omap_boot_device = boot_device;
  
  	/* Boot mode */
  
  #ifdef CONFIG_OMAP34XX
  	if ((boot_device >= MMC_BOOT_DEVICES_START) &&
  	    (boot_device <= MMC_BOOT_DEVICES_END)) {
  		switch (boot_device) {
  		case BOOT_DEVICE_MMC1:
  			boot_mode = MMCSD_MODE_FS;
  			break;
  		case BOOT_DEVICE_MMC2:
  			boot_mode = MMCSD_MODE_RAW;
  			break;
  		}
  	}
  #else
  	/*
  	 * If the boot device was dynamically changed and doesn't match what
  	 * the bootrom initially booted, we cannot use the boot device
  	 * descriptor to figure out the boot mode.
  	 */
  	if ((boot_device == omap_boot_params->boot_device) &&
  	    (boot_device >= MMC_BOOT_DEVICES_START) &&
  	    (boot_device <= MMC_BOOT_DEVICES_END)) {
  		boot_params = omap_boot_params->boot_device_descriptor;
  		if ((boot_params < NON_SECURE_SRAM_START) ||
  		    (boot_params > NON_SECURE_SRAM_END))
  			return;
  
  		boot_params = *((u32 *)(boot_params + DEVICE_DATA_OFFSET));
  		if ((boot_params < NON_SECURE_SRAM_START) ||
  		    (boot_params > NON_SECURE_SRAM_END))
  			return;
  
  		boot_mode = *((u32 *)(boot_params + BOOT_MODE_OFFSET));
  
  		if (boot_mode != MMCSD_MODE_FS &&
  		    boot_mode != MMCSD_MODE_RAW)
  #ifdef CONFIG_SUPPORT_EMMC_BOOT
  			boot_mode = MMCSD_MODE_EMMCBOOT;
  #else
  			boot_mode = MMCSD_MODE_UNDEFINED;
  #endif
  	}
  #endif
  
  	gd->arch.omap_boot_mode = boot_mode;
  
  #if !defined(CONFIG_TI814X) && !defined(CONFIG_TI816X) && \
      !defined(CONFIG_AM33XX) && !defined(CONFIG_AM43XX)
  
  	/* CH flags */
  
  	gd->arch.omap_ch_flags = omap_boot_params->ch_flags;
  #endif
  }
  
  #ifdef CONFIG_SPL_BUILD
  u32 spl_boot_device(void)
  {
  	return gd->arch.omap_boot_device;
  }
  
  u32 spl_boot_mode(const u32 boot_device)
  {
  	return gd->arch.omap_boot_mode;
  }
  
  void spl_board_init(void)
  {
  	/*
  	 * Save the boot parameters passed from romcode.
  	 * We cannot delay the saving further than this,
  	 * to prevent overwrites.
  	 */
  	save_omap_boot_params();
  
  	/* Prepare console output */
  	preloader_console_init();
  
  #if defined(CONFIG_SPL_NAND_SUPPORT) || defined(CONFIG_SPL_ONENAND_SUPPORT)
  	gpmc_init();
  #endif
  #ifdef CONFIG_SPL_I2C_SUPPORT
  	i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
  #endif
  #if defined(CONFIG_AM33XX) && defined(CONFIG_SPL_MUSB_NEW_SUPPORT)
  	arch_misc_init();
  #endif
  #if defined(CONFIG_HW_WATCHDOG)
  	hw_watchdog_init();
  #endif
  #ifdef CONFIG_AM33XX
  	am33xx_spl_board_init();
  #endif
  }
  
  void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
  {
  	typedef void __noreturn (*image_entry_noargs_t)(u32 *);
  	image_entry_noargs_t image_entry =
  			(image_entry_noargs_t) spl_image->entry_point;
  
  	u32 boot_params = *((u32 *)OMAP_SRAM_SCRATCH_BOOT_PARAMS);
  
  	debug("image entry point: 0x%lX\n", spl_image->entry_point);
  	/* Pass the saved boot_params from rom code */
  	image_entry((u32 *)boot_params);
  }
  #endif
  
  #ifdef CONFIG_SCSI_AHCI_PLAT
  void arch_preboot_os(void)
  {
  	ahci_reset((void __iomem *)DWC_AHSATA_BASE);
  }
  #endif
  
  #if defined(CONFIG_USB_FUNCTION_FASTBOOT) && !defined(CONFIG_ENV_IS_NOWHERE)
  int fb_set_reboot_flag(void)
  {
  	printf("Setting reboot to fastboot flag ...\n");
  	setenv("dofastboot", "1");
  	saveenv();
  	return 0;
  }
  #endif
  