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Diffstat (limited to 'arch/arm/mach-imx/spl.c')
| -rw-r--r-- | arch/arm/mach-imx/spl.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/spl.c b/arch/arm/mach-imx/spl.c new file mode 100644 index 0000000000..75698c48ea --- /dev/null +++ b/arch/arm/mach-imx/spl.c @@ -0,0 +1,128 @@ +/* + * 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/arch/sys_proto.h> +#include <asm/spl.h> +#include <spl.h> +#include <asm/mach-imx/hab.h> + +#if defined(CONFIG_MX6) +/* determine boot device from SRC_SBMR1 (BOOT_CFG[4:1]) or SRC_GPR9 register */ +u32 spl_boot_device(void) +{ + unsigned int bmode = readl(&src_base->sbmr2); + u32 reg = imx6_src_get_boot_mode(); + + /* + * Check for BMODE if serial downloader is enabled + * BOOT_MODE - see IMX6DQRM Table 8-1 + */ + if (((bmode >> 24) & 0x03) == 0x01) /* Serial Downloader */ + return BOOT_DEVICE_UART; + + /* BOOT_CFG1[7:4] - see IMX6DQRM Table 8-8 */ + switch ((reg & IMX6_BMODE_MASK) >> IMX6_BMODE_SHIFT) { + /* EIM: See 8.5.1, Table 8-9 */ + case IMX6_BMODE_EMI: + /* BOOT_CFG1[3]: NOR/OneNAND Selection */ + switch ((reg & IMX6_BMODE_EMI_MASK) >> IMX6_BMODE_EMI_SHIFT) { + case IMX6_BMODE_ONENAND: + return BOOT_DEVICE_ONENAND; + case IMX6_BMODE_NOR: + return BOOT_DEVICE_NOR; + break; + } + /* Reserved: Used to force Serial Downloader */ + case IMX6_BMODE_UART: + return BOOT_DEVICE_UART; + /* SATA: See 8.5.4, Table 8-20 */ + case IMX6_BMODE_SATA: + return BOOT_DEVICE_SATA; + /* Serial ROM: See 8.5.5.1, Table 8-22 */ + case IMX6_BMODE_SERIAL_ROM: + /* BOOT_CFG4[2:0] */ + switch ((reg & IMX6_BMODE_SERIAL_ROM_MASK) >> + IMX6_BMODE_SERIAL_ROM_SHIFT) { + case IMX6_BMODE_ECSPI1: + case IMX6_BMODE_ECSPI2: + case IMX6_BMODE_ECSPI3: + case IMX6_BMODE_ECSPI4: + case IMX6_BMODE_ECSPI5: + return BOOT_DEVICE_SPI; + case IMX6_BMODE_I2C1: + case IMX6_BMODE_I2C2: + case IMX6_BMODE_I2C3: + return BOOT_DEVICE_I2C; + } + break; + /* SD/eSD: 8.5.3, Table 8-15 */ + case IMX6_BMODE_SD: + case IMX6_BMODE_ESD: + return BOOT_DEVICE_MMC1; + /* MMC/eMMC: 8.5.3 */ + case IMX6_BMODE_MMC: + case IMX6_BMODE_EMMC: + return BOOT_DEVICE_MMC1; + /* NAND Flash: 8.5.2, Table 8-10 */ + case IMX6_BMODE_NAND: + 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(const u32 boot_device) +{ + 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 + +#if defined(CONFIG_SECURE_BOOT) + +__weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image) +{ + typedef void __noreturn (*image_entry_noargs_t)(void); + + image_entry_noargs_t image_entry = + (image_entry_noargs_t)(unsigned long)spl_image->entry_point; + + debug("image entry point: 0x%lX\n", spl_image->entry_point); + + /* HAB looks for the CSF at the end of the authenticated data therefore, + * we need to subtract the size of the CSF from the actual filesize */ + if (authenticate_image(spl_image->load_addr, + spl_image->size - CONFIG_CSF_SIZE)) { + image_entry(); + } else { + puts("spl: ERROR: image authentication unsuccessful\n"); + hang(); + } +} + +#endif |