imx: reorganize IMX code as other SOCs

Change is consistent with other SOCs and it is in preparation
for adding SOMs. SOC's related files are moved from cpu/ to
mach-imx/<SOC>.

This change is also coherent with the structure in kernel.

Signed-off-by: Stefano Babic <sbabic@denx.de>

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Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>

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 0000000..75698c4
--- /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