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/*
* Copyright (C) 2014 Gateworks Corporation
* Copyright (C) 2011-2012 Freescale Semiconductor, Inc.
*
* Author: Tim Harvey <tharvey@gateworks.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/spl.h>
#include <spl.h>
#if defined(CONFIG_MX6)
/* determine boot device from SRC_SBMR1 (BOOT_CFG[4:1]) or SRC_GPR9 register */
u32 spl_boot_device(void)
{
struct src *psrc = (struct src *)SRC_BASE_ADDR;
unsigned int gpr10_boot = readl(&psrc->gpr10) & (1 << 28);
unsigned reg = gpr10_boot ? readl(&psrc->gpr9) : readl(&psrc->sbmr1);
unsigned int bmode = readl(&psrc->sbmr2);
/*
* Check for BMODE if serial downloader is enabled
* BOOT_MODE - see IMX6DQRM Table 8-1
*/
if ((((bmode >> 24) & 0x03) == 0x01) || /* Serial Downloader */
(gpr10_boot && (reg == 1)))
return BOOT_DEVICE_UART;
/* BOOT_CFG1[7:4] - see IMX6DQRM Table 8-8 */
switch ((reg & 0x000000FF) >> 4) {
/* EIM: See 8.5.1, Table 8-9 */
case 0x0:
/* BOOT_CFG1[3]: NOR/OneNAND Selection */
if ((reg & 0x00000008) >> 3)
return BOOT_DEVICE_ONENAND;
else
return BOOT_DEVICE_NOR;
break;
/* SATA: See 8.5.4, Table 8-20 */
case 0x2:
return BOOT_DEVICE_SATA;
/* Serial ROM: See 8.5.5.1, Table 8-22 */
case 0x3:
/* BOOT_CFG4[2:0] */
switch ((reg & 0x07000000) >> 24) {
case 0x0 ... 0x4:
return BOOT_DEVICE_SPI;
case 0x5 ... 0x7:
return BOOT_DEVICE_I2C;
}
break;
/* SD/eSD: 8.5.3, Table 8-15 */
case 0x4:
case 0x5:
return BOOT_DEVICE_MMC1;
/* MMC/eMMC: 8.5.3 */
case 0x6:
case 0x7:
return BOOT_DEVICE_MMC1;
/* NAND Flash: 8.5.2 */
case 0x8 ... 0xf:
return BOOT_DEVICE_NAND;
}
return BOOT_DEVICE_NONE;
}
#endif
#if defined(CONFIG_SPL_MMC_SUPPORT)
/* called from spl_mmc to see type of boot mode for storage (RAW or FAT) */
u32 spl_boot_mode(void)
{
switch (spl_boot_device()) {
/* for MMC return either RAW or FAT mode */
case BOOT_DEVICE_MMC1:
case BOOT_DEVICE_MMC2:
#if defined(CONFIG_SPL_FAT_SUPPORT)
return MMCSD_MODE_FS;
#elif defined(CONFIG_SUPPORT_EMMC_BOOT)
return MMCSD_MODE_EMMCBOOT;
#else
return MMCSD_MODE_RAW;
#endif
break;
default:
puts("spl: ERROR: unsupported device\n");
hang();
}
}
#endif
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