mirror of
https://github.com/brain-hackers/u-boot-brain
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d789b5f5bc
The Integrated Flash Controller (IFC) is used to access the external
NAND Flash, NOR Flash, EPROM, SRAM and Generic ASIC memories.Four chip
selects are provided in IFC so that maximum of four Flash devices can be
hooked, but only one can be accessed at a given time.
Features supported by IFC are,
- Functional muxing of pins between NAND, NOR and GPCM
- Support memory banks of size 64KByte to 4 GBytes
- Write protection capability (only for NAND and NOR)
- Provision of Software Reset
- Flexible Timing programmability for every chip select
- NAND Machine
- x8/ x16 NAND Flash Interface
- SLC and MLC NAND Flash devices support with
configurable
page sizes of upto 4KB
- Internal SRAM of 9KB which is directly mapped and
availble at
boot time for NAND Boot
- Configurable block size
- Boot chip select (CS0) available at system reset
- NOR Machine
- Data bus width of 8/16/32
- Compatible with asynchronous NOR Flash
- Directly memory mapped
- Supports address data multiplexed (ADM) NOR device
- Boot chip select (CS0) available at system reset
- GPCM Machine (NORMAL GPCM Mode)
- Support for x8/16/32 bit device
- Compatible with general purpose addressable device
e.g. SRAM, ROM
- External clock is supported with programmable division
ratio
- GPCM Machine (Generic ASIC Mode)
- Support for x8/16/32 bit device
- Address and Data are shared on I/O bus
- Following Address and Data sequences can be supported
on I/O bus
- 32 bit I/O: AD
- 16 bit I/O: AADD
- 8 bit I/O : AAAADDDD
- Configurable Even/Odd Parity on Address/Data bus
supported
Signed-off-by: Dipen Dudhat <Dipen.Dudhat@freescale.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
/*
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* Copyright 2009-2011 Freescale Semiconductor, Inc.
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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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*/
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#ifndef _ASM_CONFIG_H_
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#define _ASM_CONFIG_H_
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#ifdef CONFIG_MPC85xx
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#include <asm/config_mpc85xx.h>
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#endif
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#ifdef CONFIG_MPC86xx
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#include <asm/config_mpc86xx.h>
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#endif
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#define CONFIG_LMB
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#define CONFIG_SYS_BOOT_RAMDISK_HIGH
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#define CONFIG_SYS_BOOT_GET_CMDLINE
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#define CONFIG_SYS_BOOT_GET_KBD
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#ifndef CONFIG_MAX_MEM_MAPPED
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#if defined(CONFIG_4xx) || defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
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#define CONFIG_MAX_MEM_MAPPED ((phys_size_t)2 << 30)
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#else
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#define CONFIG_MAX_MEM_MAPPED (256 << 20)
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#endif
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#endif
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/* Check if boards need to enable FSL DMA engine for SDRAM init */
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#if !defined(CONFIG_FSL_DMA) && defined(CONFIG_DDR_ECC)
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#if (defined(CONFIG_MPC83xx) && defined(CONFIG_DDR_ECC_INIT_VIA_DMA)) || \
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((defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)) && \
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!defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER))
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#define CONFIG_FSL_DMA
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#endif
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#endif
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#ifndef CONFIG_MAX_CPUS
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#define CONFIG_MAX_CPUS 1
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#endif
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/*
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* Provide a default boot page translation virtual address that lines up with
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* Freescale's default e500 reset page.
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*/
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#if (defined(CONFIG_E500) && defined(CONFIG_MP))
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#ifndef CONFIG_BPTR_VIRT_ADDR
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#define CONFIG_BPTR_VIRT_ADDR 0xfffff000
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#endif
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#endif
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/*
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* SEC (crypto unit) major compatible version determination
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*/
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#if defined(CONFIG_MPC83xx)
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#define CONFIG_SYS_FSL_SEC_COMPAT 2
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#endif
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/* Since so many PPC SOCs have a semi-common LBC, define this here */
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#if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) || \
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defined(CONFIG_MPC83xx)
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#if !defined(CONFIG_FSL_IFC)
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#define CONFIG_FSL_LBC
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#endif
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#endif
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/* All PPC boards must swap IDE bytes */
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#define CONFIG_IDE_SWAP_IO
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#endif /* _ASM_CONFIG_H_ */
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