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mx6: add boot device support for SPL

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Add a common spl.c file to support boot device functions needed for SPL
such as detecting the boot device.

Cc: Stefan Roese <sr@denx.de>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Andy Ng <andreas2025@gmail.com>
Cc: Eric Nelson <eric.nelson@boundarydevices.com>
Cc: Tapani Utriainen <tapani@technexion.com>
Cc: Tom Rini <trini@ti.com>

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Nikita Kiryanov <nikita@compulab.co.il>
This commit is contained in:
Tim Harvey 2014-06-02 16:13:20 -07:00 committed by Stefano Babic
parent 88c307d19d
commit 887717dbb9
2 changed files with 82 additions and 0 deletions
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1
arch/arm/imx-common/Makefile
View File

@ -16,6 +16,7 @@ obj-$(CONFIG_SYS_I2C_MXC) += i2c-mxv7.o
endif
ifeq ($(SOC),$(filter $(SOC),mx6 mxs))
obj-y += misc.o
obj-$(CONFIG_SPL_BUILD) += spl.o
endif
ifeq ($(SOC),$(filter $(SOC),mx6))
obj-$(CONFIG_CMD_SATA) += sata.o

81
arch/arm/imx-common/spl.c Normal file
View File

@ -0,0 +1,81 @@
/*
* 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 register (BOOT_CFG[4:1]) */
u32 spl_boot_device(void)
{
struct src *psrc = (struct src *)SRC_BASE_ADDR;
unsigned reg = readl(&psrc->sbmr1);
/* 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:
#ifdef CONFIG_SPL_FAT_SUPPORT
return MMCSD_MODE_FAT;
#else
return MMCSD_MODE_RAW;
#endif
break;
default:
puts("spl: ERROR: unsupported device\n");
hang();
}
}
#endif