mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-12 14:16:17 +09:00
f9f2f12e2c
The SPI hardware on Seaboard is too broken to use; it is muxed with the console UART and requires evil interactions between the SPI and UART drivers to work even partially. The current code in U-Boot is not sufficient to make this work correctly; auto boot is aborted due to corruption in the UART RX channel interrupting it. Instead, move the environment to eMMC, at the end of the second boot sector. This should not conflict with any other eMMC usage, irrespective of whether the board boots from SPI, NAND, or eMMC: if U-Boot is stored in eMMC, it will be stored well below this location. The kernel only uses the general area of the eMMC once booted, not the boot sectors. Boards that are derivatives of Seaboard don't have the muxing issue, and should/could have a separate U-Boot configuration file that does enable SPI if desired. Alternatively, the environment could be stored in NAND flash, but we currently have no driver for that controller. Signed-off-by: Stephen Warren <swarren@nvidia.com> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/*
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* (C) Copyright 2010,2011
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* NVIDIA Corporation <www.nvidia.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef __CONFIG_H
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#define __CONFIG_H
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#include <asm/sizes.h>
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/* LP0 suspend / resume */
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#define CONFIG_TEGRA2_LP0
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#define CONFIG_AES
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#define CONFIG_TEGRA_PMU
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#define CONFIG_TPS6586X_POWER
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#define CONFIG_TEGRA_CLOCK_SCALING
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#include "tegra2-common.h"
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/* Enable fdt support for Seaboard. Flash the image in u-boot-dtb.bin */
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#define CONFIG_DEFAULT_DEVICE_TREE tegra2-seaboard
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#define CONFIG_OF_CONTROL
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#define CONFIG_OF_SEPARATE
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/* High-level configuration options */
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#define V_PROMPT "Tegra2 (SeaBoard) # "
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#define CONFIG_TEGRA2_BOARD_STRING "NVIDIA Seaboard"
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/* Board-specific serial config */
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#define CONFIG_SERIAL_MULTI
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#define CONFIG_TEGRA2_ENABLE_UARTD
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#define CONFIG_SYS_NS16550_COM1 NV_PA_APB_UARTD_BASE
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/* On Seaboard: GPIO_PI3 = Port I = 8, bit = 3 */
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#define CONFIG_UART_DISABLE_GPIO GPIO_PI3
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#define CONFIG_MACH_TYPE MACH_TYPE_SEABOARD
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#define CONFIG_SYS_BOARD_ODMDATA 0x300d8011 /* lp1, 1GB */
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#define CONFIG_BOARD_EARLY_INIT_F
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/* I2C */
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#define CONFIG_TEGRA_I2C
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#define CONFIG_SYS_I2C_INIT_BOARD
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#define CONFIG_I2C_MULTI_BUS
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#define CONFIG_SYS_MAX_I2C_BUS 4
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#define CONFIG_SYS_I2C_SPEED 100000
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#define CONFIG_CMD_I2C
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/* SD/MMC */
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#define CONFIG_MMC
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#define CONFIG_GENERIC_MMC
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#define CONFIG_TEGRA_MMC
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#define CONFIG_CMD_MMC
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#define CONFIG_DOS_PARTITION
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#define CONFIG_EFI_PARTITION
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#define CONFIG_CMD_EXT2
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#define CONFIG_CMD_FAT
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/* Environment in eMMC, at the end of 2nd "boot sector" */
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#define CONFIG_ENV_IS_IN_MMC
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#define CONFIG_ENV_OFFSET ((2 * 512 * 1024) - CONFIG_ENV_SIZE)
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#define CONFIG_SYS_MMC_ENV_DEV 0
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/* USB Host support */
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#define CONFIG_USB_EHCI
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#define CONFIG_USB_EHCI_TEGRA
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#define CONFIG_USB_STORAGE
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#define CONFIG_CMD_USB
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/* USB networking support */
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#define CONFIG_USB_HOST_ETHER
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#define CONFIG_USB_ETHER_ASIX
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/* General networking support */
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#define CONFIG_CMD_NET
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#define CONFIG_CMD_DHCP
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/* Enable keyboard */
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#define CONFIG_TEGRA2_KEYBOARD
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#define CONFIG_KEYBOARD
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#undef TEGRA2_DEVICE_SETTINGS
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#define TEGRA2_DEVICE_SETTINGS "stdin=serial,tegra-kbc\0" \
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"stdout=serial\0" \
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"stderr=serial\0"
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#include "tegra2-common-post.h"
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#endif /* __CONFIG_H */
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