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3f719069c8
This patch adds new CONFIG_NAND_OMAP_ECCSCHEME, replacing other distributed
CONFIG_xx used for selecting NAND ecc-schemes.
This patch aims at solving following issues.
1) Currently ecc-scheme is tied to SoC platform, which prevents user to select
other ecc-schemes also supported in hardware. like;
- most of OMAP3 SoC platforms use only 1-bit Hamming ecc-scheme, inspite
the fact that they can use higher ecc-schemes like 8-bit ecc-schemes with
software based error detection (OMAP_ECC_BCH4_CODE_HW_DETECTION_SW).
- most of AM33xx SoC plaforms use 8-bit BCH ecc-scheme for now, but hardware
supports BCH16 ecc-scheme also.
2) Different platforms use different CONFIG_xx to select ecc-schemes, which
adds confusion for user while migrating platforms.
- *CONFIG_NAND_OMAP_ELM* which enables ELM hardware engine, selects only
8-bit BCH ecc-scheme with h/w based error-correction (OMAP_ECC_BCH8_CODE_HW)
whereas ELM hardware engine supports other ecc-schemes also like; BCH4,
and BCH16 (in future).
- *CONFIG_NAND_OMAP_BCH8* selects 8-bit BCH ecc-scheme with s/w based error
correction (OMAP_ECC_BCH8_CODE_HW_DETECTION_SW).
- *CONFIG_SPL_NAND_SOFTECC* selects 1-bit Hamming ecc-scheme using s/w library
Thus adding new *CONFIG_NAND_OMAP_ECCSCHEME* de-couples ecc-scheme dependency
on SoC platform and NAND driver. And user can select ecc-scheme independently
foreach board.
However, selection some hardware based ecc-schemes (OMAP_ECC_BCHx_CODE_HW) still
depends on presence of ELM hardware engine on SoC. (Refer doc/README.nand)
Signed-off-by: Pekon Gupta <pekon@ti.com>
161 lines
4.7 KiB
C
161 lines
4.7 KiB
C
/*
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* Configuration settings for the TI OMAP3 EVM board.
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*
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* Copyright (C) 2006-2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* Author :
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* Manikandan Pillai <mani.pillai@ti.com>
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* Derived from Beagle Board and 3430 SDP code by
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* Richard Woodruff <r-woodruff2@ti.com>
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* Syed Mohammed Khasim <khasim@ti.com>
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*
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* Manikandan Pillai <mani.pillai@ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __OMAP3EVM_CONFIG_H
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#define __OMAP3EVM_CONFIG_H
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#include <asm/arch/cpu.h>
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#include <asm/arch/omap3.h>
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/* ----------------------------------------------------------------------------
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* Supported U-boot commands
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* ----------------------------------------------------------------------------
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*/
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#include <config_cmd_default.h>
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#define CONFIG_CMD_ASKENV
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#define CONFIG_CMD_EXT2
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#define CONFIG_CMD_FAT
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#define CONFIG_CMD_JFFS2
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#define CONFIG_CMD_I2C
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#define CONFIG_CMD_MMC
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#define CONFIG_CMD_NAND
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#define CONFIG_CMD_DHCP
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#define CONFIG_CMD_PING
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#undef CONFIG_CMD_FLASH /* flinfo, erase, protect */
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#undef CONFIG_CMD_FPGA /* FPGA configuration Support */
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#undef CONFIG_CMD_IMI /* iminfo */
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#undef CONFIG_CMD_IMLS /* List all found images */
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/* ----------------------------------------------------------------------------
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* Supported U-boot features
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* ----------------------------------------------------------------------------
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*/
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#define CONFIG_SYS_LONGHELP
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#define CONFIG_SYS_HUSH_PARSER
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/* Display CPU and Board information */
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#define CONFIG_DISPLAY_CPUINFO
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#define CONFIG_DISPLAY_BOARDINFO
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/* Allow to overwrite serial and ethaddr */
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#define CONFIG_ENV_OVERWRITE
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/* Add auto-completion support */
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#define CONFIG_AUTO_COMPLETE
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/* ----------------------------------------------------------------------------
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* Supported hardware
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* ----------------------------------------------------------------------------
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*/
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/* MMC */
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#define CONFIG_MMC
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#define CONFIG_GENERIC_MMC
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#define CONFIG_OMAP_HSMMC
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/* SPL */
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#define CONFIG_SPL_MMC_SUPPORT
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#define CONFIG_SPL_FAT_SUPPORT
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#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x300 /* address 0x60000 */
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#define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS 0x200 /* 256 KB */
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#define CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION 1
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#define CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME "u-boot.img"
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/* Partition tables */
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#define CONFIG_EFI_PARTITION
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#define CONFIG_DOS_PARTITION
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/* USB
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*
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* Enable CONFIG_MUSB_HCD for Host functionalities MSC, keyboard
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* Enable CONFIG_MUSB_UDD for Device functionalities.
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*/
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#define CONFIG_USB_OMAP3
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#define CONFIG_MUSB_HCD
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/* #define CONFIG_MUSB_UDC */
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/* NAND SPL */
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#define CONFIG_SPL_NAND_SIMPLE
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#define CONFIG_SPL_NAND_SUPPORT
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#define CONFIG_SPL_NAND_BASE
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#define CONFIG_SPL_NAND_DRIVERS
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#define CONFIG_SPL_NAND_ECC
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#define CONFIG_SYS_NAND_5_ADDR_CYCLE
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#define CONFIG_SYS_NAND_PAGE_COUNT 64
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#define CONFIG_SYS_NAND_PAGE_SIZE 2048
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#define CONFIG_SYS_NAND_OOBSIZE 64
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#define CONFIG_SYS_NAND_BLOCK_SIZE (128*1024)
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#define CONFIG_SYS_NAND_BAD_BLOCK_POS 0
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#define CONFIG_SYS_NAND_ECCPOS {2, 3, 4, 5, 6, 7, 8, 9,\
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10, 11, 12, 13}
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#define CONFIG_SYS_NAND_ECCSIZE 512
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#define CONFIG_SYS_NAND_ECCBYTES 3
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#define CONFIG_NAND_OMAP_ECCSCHEME OMAP_ECC_HAM1_CODE_HW
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#define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_TEXT_BASE
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#define CONFIG_SYS_NAND_U_BOOT_OFFS 0x80000
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/* -----------------------------------------------------------------------------
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* Include common board configuration
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* -----------------------------------------------------------------------------
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*/
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#include "omap3_evm_common.h"
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/* -----------------------------------------------------------------------------
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* Default environment
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* -----------------------------------------------------------------------------
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*/
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#define CONFIG_BOOTDELAY 3
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#define CONFIG_EXTRA_ENV_SETTINGS \
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"loadaddr=0x82000000\0" \
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"usbtty=cdc_acm\0" \
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"mmcdev=0\0" \
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"console=ttyO0,115200n8\0" \
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"mmcargs=setenv bootargs console=${console} " \
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"root=/dev/mmcblk0p2 rw " \
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"rootfstype=ext3 rootwait\0" \
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"nandargs=setenv bootargs console=${console} " \
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"root=/dev/mtdblock4 rw " \
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"rootfstype=jffs2\0" \
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"loadbootscript=fatload mmc ${mmcdev} ${loadaddr} boot.scr\0" \
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"bootscript=echo Running bootscript from mmc ...; " \
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"source ${loadaddr}\0" \
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"loaduimage=fatload mmc ${mmcdev} ${loadaddr} uImage\0" \
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"mmcboot=echo Booting from mmc ...; " \
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"run mmcargs; " \
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"bootm ${loadaddr}\0" \
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"nandboot=echo Booting from nand ...; " \
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"run nandargs; " \
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"onenand read ${loadaddr} 280000 400000; " \
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"bootm ${loadaddr}\0" \
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#define CONFIG_BOOTCOMMAND \
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"mmc dev ${mmcdev}; if mmc rescan; then " \
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"if run loadbootscript; then " \
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"run bootscript; " \
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"else " \
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"if run loaduimage; then " \
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"run mmcboot; " \
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"else run nandboot; " \
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"fi; " \
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"fi; " \
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"else run nandboot; fi"
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#endif /* __OMAP3EVM_CONFIG_H */
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