mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 17:07:38 +00:00
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>
93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
/*
|
|
* Configuration settings for quick boot from NAND on OMAP3 EVM.
|
|
*
|
|
* Copyright (C) 2006-2010 Texas Instruments Incorporated - http://www.ti.com/
|
|
*
|
|
* Author :
|
|
* Sanjeev Premi <premi@ti.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#ifndef __OMAP3_EVM_QUICK_NAND_H
|
|
#define __OMAP3_EVM_QUICK_NAND_H
|
|
|
|
#include <asm/arch/cpu.h>
|
|
#include <asm/arch/omap3.h>
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
* Supported U-boot commands
|
|
* ----------------------------------------------------------------------------
|
|
*/
|
|
#define CONFIG_CMD_NAND
|
|
|
|
/*
|
|
* Board revision is detected by probing the Ethernet chip.
|
|
*
|
|
* When revision is statically configured via CONFIG_STATIC_BOARD_REV,
|
|
* this option can be removed. Generated binary is leaner by ~16Kbytes.
|
|
*/
|
|
#define CONFIG_CMD_NET
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
* Supported U-boot features
|
|
* ----------------------------------------------------------------------------
|
|
*/
|
|
#define CONFIG_SILENT_CONSOLE
|
|
#define CONFIG_ENV_IS_NOWHERE
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Include common board configuration
|
|
* -----------------------------------------------------------------------------
|
|
*/
|
|
#include "omap3_evm_common.h"
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Default environment
|
|
* -----------------------------------------------------------------------------
|
|
*/
|
|
#define CONFIG_BOOTDELAY 0
|
|
|
|
#define CONFIG_EXTRA_ENV_SETTINGS \
|
|
"verify=no\0" \
|
|
"silent=1"
|
|
|
|
#define CONFIG_BOOTCOMMAND \
|
|
"nandecc hw; " \
|
|
"nand read.i 0x80000000 280000 300000; " \
|
|
"bootm 0x80000000;"
|
|
|
|
/*
|
|
* Update the bootargs as necessary e.g. size of memory, partition and fstype
|
|
*/
|
|
#define CONFIG_BOOTARGS \
|
|
"quiet " \
|
|
"console=ttyO0,115200n8 " \
|
|
"mem=128M " \
|
|
"noinitrd " \
|
|
"root=/dev/mtdblock4 rw " \
|
|
"rootfstype=jffs2 "
|
|
|
|
/*
|
|
* SPL
|
|
*/
|
|
#define CONFIG_SPL_NAND_SIMPLE
|
|
#define CONFIG_SPL_NAND_SUPPORT
|
|
#define CONFIG_SPL_NAND_BASE
|
|
#define CONFIG_SPL_NAND_DRIVERS
|
|
#define CONFIG_SPL_NAND_ECC
|
|
#define CONFIG_SYS_NAND_5_ADDR_CYCLE
|
|
#define CONFIG_SYS_NAND_PAGE_COUNT 64
|
|
#define CONFIG_SYS_NAND_PAGE_SIZE 2048
|
|
#define CONFIG_SYS_NAND_OOBSIZE 64
|
|
#define CONFIG_SYS_NAND_BLOCK_SIZE (128*1024)
|
|
#define CONFIG_SYS_NAND_BAD_BLOCK_POS 0
|
|
#define CONFIG_SYS_NAND_ECCPOS {2, 3, 4, 5, 6, 7, 8, 9,\
|
|
10, 11, 12, 13}
|
|
#define CONFIG_SYS_NAND_ECCSIZE 512
|
|
#define CONFIG_SYS_NAND_ECCBYTES 3
|
|
#define CONFIG_NAND_OMAP_ECCSCHEME OMAP_ECC_HAM1_CODE_HW
|
|
#define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_TEXT_BASE
|
|
#define CONFIG_SYS_NAND_U_BOOT_OFFS 0x80000
|
|
|
|
#endif /* __OMAP3_EVM_QUICK_NAND_H */
|