/* * Copyright (C) 2014 Gateworks Corporation * Copyright (C) 2011-2012 Freescale Semiconductor, Inc. * * Author: Tim Harvey * * SPDX-License-Identifier: GPL-2.0+ */ #include #include #include #include #include #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