Commit 266dead2 authored by Leo (Hao) Chen's avatar Leo (Hao) Chen Committed by David Woodhouse
Browse files

mtd: add bcmring nand driver 



Signed-off-by: default avatarLeo Hao Chen <leochen@broadcom.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 4b56ffca

arch/arm/mach-bcmring/arch.c

+10 −0
Original line number Diff line number Diff line
@@ -76,9 +76,19 @@ static struct ctl_table bcmring_sysctl_reboot[] = { 
	{}

};



static struct resource nand_resource[] = {

	[0] = {

		.start = MM_ADDR_IO_NAND,

		.end = MM_ADDR_IO_NAND + 0x1000 - 1,

		.flags = IORESOURCE_MEM,

	},

};



static struct platform_device nand_device = {

	.name = "bcm-nand",

	.id = -1,

	.resource = nand_resource,

	.num_resources	= ARRAY_SIZE(nand_resource),

};



static struct platform_device *devices[] __initdata = {

arch/arm/mach-bcmring/include/mach/reg_nand.h

0 → 100644
+66 −0
Original line number Diff line number Diff line 
/*****************************************************************************

* Copyright 2001 - 2008 Broadcom Corporation.  All rights reserved.

*

* Unless you and Broadcom execute a separate written software license

* agreement governing use of this software, this software is licensed to you

* under the terms of the GNU General Public License version 2, available at

* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").

*

* Notwithstanding the above, under no circumstances may you combine this

* software in any way with any other Broadcom software provided under a

* license other than the GPL, without Broadcom's express prior written

* consent.

*****************************************************************************/



/*

*

*****************************************************************************

*

*  REG_NAND.h

*

*  PURPOSE:

*

*     This file contains definitions for the nand registers:

*

*  NOTES:

*

*****************************************************************************/



#if !defined(__ASM_ARCH_REG_NAND_H)

#define __ASM_ARCH_REG_NAND_H



/* ---- Include Files ---------------------------------------------------- */

#include <csp/reg.h>

#include <mach/reg_umi.h>



/* ---- Constants and Types ---------------------------------------------- */



#define HW_NAND_BASE       MM_IO_BASE_NAND	/* NAND Flash */



/* DMA accesses by the bootstrap need hard nonvirtual addresses */

#define REG_NAND_CMD            __REG16(HW_NAND_BASE + 0)

#define REG_NAND_ADDR           __REG16(HW_NAND_BASE + 4)



#define REG_NAND_PHYS_DATA16   (HW_NAND_BASE + 8)

#define REG_NAND_PHYS_DATA8    (HW_NAND_BASE + 8)

#define REG_NAND_DATA16         __REG16(REG_NAND_PHYS_DATA16)

#define REG_NAND_DATA8          __REG8(REG_NAND_PHYS_DATA8)



/* use appropriate offset to make sure it start at the 1K boundary */

#define REG_NAND_PHYS_DATA_DMA   (HW_NAND_BASE + 0x400)

#define REG_NAND_DATA_DMA         __REG32(REG_NAND_PHYS_DATA_DMA)



/* Linux DMA requires physical address of the data register */

#define REG_NAND_DATA16_PADDR    HW_IO_VIRT_TO_PHYS(REG_NAND_PHYS_DATA16)

#define REG_NAND_DATA8_PADDR     HW_IO_VIRT_TO_PHYS(REG_NAND_PHYS_DATA8)

#define REG_NAND_DATA_PADDR      HW_IO_VIRT_TO_PHYS(REG_NAND_PHYS_DATA_DMA)



#define NAND_BUS_16BIT()        (0)

#define NAND_BUS_8BIT()         (!NAND_BUS_16BIT())



/* Register offsets */

#define REG_NAND_CMD_OFFSET     (0)

#define REG_NAND_ADDR_OFFSET    (4)

#define REG_NAND_DATA8_OFFSET   (8)



#endif

arch/arm/mach-bcmring/include/mach/reg_umi.h

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+237 −0
Original line number Diff line number Diff line 
/*****************************************************************************

* Copyright 2005 - 2008 Broadcom Corporation.  All rights reserved.

*

* Unless you and Broadcom execute a separate written software license

* agreement governing use of this software, this software is licensed to you

* under the terms of the GNU General Public License version 2, available at

* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").

*

* Notwithstanding the above, under no circumstances may you combine this

* software in any way with any other Broadcom software provided under a

* license other than the GPL, without Broadcom's express prior written

* consent.

*****************************************************************************/



/*

*

*****************************************************************************

*

*  REG_UMI.h

*

*  PURPOSE:

*

*     This file contains definitions for the nand registers:

*

*  NOTES:

*

*****************************************************************************/



#if !defined(__ASM_ARCH_REG_UMI_H)

#define __ASM_ARCH_REG_UMI_H



/* ---- Include Files ---------------------------------------------------- */

#include <csp/reg.h>

#include <mach/csp/mm_io.h>



/* ---- Constants and Types ---------------------------------------------- */



/* Unified Memory Interface Ctrl Register */

#define HW_UMI_BASE       MM_IO_BASE_UMI



/* Flash bank 0 timing and control register */

#define REG_UMI_FLASH0_TCR         __REG32(HW_UMI_BASE  + 0x00)

/* Flash bank 1 timing and control register */

#define REG_UMI_FLASH1_TCR         __REG32(HW_UMI_BASE  + 0x04)

/* Flash bank 2 timing and control register */

#define REG_UMI_FLASH2_TCR         __REG32(HW_UMI_BASE  + 0x08)

/* MMD interface and control register */

#define REG_UMI_MMD_ICR            __REG32(HW_UMI_BASE  + 0x0c)

/* NAND timing and control register */

#define REG_UMI_NAND_TCR           __REG32(HW_UMI_BASE  + 0x18)

/* NAND ready/chip select register */

#define REG_UMI_NAND_RCSR          __REG32(HW_UMI_BASE  + 0x1c)

/* NAND ECC control & status register */

#define REG_UMI_NAND_ECC_CSR       __REG32(HW_UMI_BASE  + 0x20)

/* NAND ECC data register XXB2B1B0 */

#define REG_UMI_NAND_ECC_DATA      __REG32(HW_UMI_BASE  + 0x24)

/* BCH ECC Parameter N */

#define REG_UMI_BCH_N              __REG32(HW_UMI_BASE  + 0x40)

/* BCH ECC Parameter T */

#define REG_UMI_BCH_K              __REG32(HW_UMI_BASE  + 0x44)

/* BCH ECC Parameter K */

#define REG_UMI_BCH_T              __REG32(HW_UMI_BASE  + 0x48)

/* BCH ECC Contro Status */

#define REG_UMI_BCH_CTRL_STATUS    __REG32(HW_UMI_BASE  + 0x4C)

/* BCH WR ECC 31:0 */

#define REG_UMI_BCH_WR_ECC_0       __REG32(HW_UMI_BASE  + 0x50)

/* BCH WR ECC 63:32 */

#define REG_UMI_BCH_WR_ECC_1       __REG32(HW_UMI_BASE  + 0x54)

/* BCH WR ECC 95:64 */

#define REG_UMI_BCH_WR_ECC_2       __REG32(HW_UMI_BASE  + 0x58)

/* BCH WR ECC 127:96 */

#define REG_UMI_BCH_WR_ECC_3       __REG32(HW_UMI_BASE  + 0x5c)

/* BCH WR ECC 155:128 */

#define REG_UMI_BCH_WR_ECC_4       __REG32(HW_UMI_BASE  + 0x60)

/* BCH Read Error Location 1,0 */

#define REG_UMI_BCH_RD_ERR_LOC_1_0 __REG32(HW_UMI_BASE  + 0x64)

/* BCH Read Error Location 3,2 */

#define REG_UMI_BCH_RD_ERR_LOC_3_2 __REG32(HW_UMI_BASE  + 0x68)

/* BCH Read Error Location 5,4 */

#define REG_UMI_BCH_RD_ERR_LOC_5_4 __REG32(HW_UMI_BASE  + 0x6c)

/* BCH Read Error Location 7,6 */

#define REG_UMI_BCH_RD_ERR_LOC_7_6 __REG32(HW_UMI_BASE  + 0x70)

/* BCH Read Error Location 9,8 */

#define REG_UMI_BCH_RD_ERR_LOC_9_8 __REG32(HW_UMI_BASE  + 0x74)

/* BCH Read Error Location 11,10 */

#define REG_UMI_BCH_RD_ERR_LOC_B_A __REG32(HW_UMI_BASE  + 0x78)



/* REG_UMI_FLASH0/1/2_TCR, REG_UMI_SRAM0/1_TCR bits */

/* Enable wait pin during burst write or read */

#define REG_UMI_TCR_WAITEN              0x80000000

/* Enable mem ctrlr to work iwth ext mem of lower freq than AHB clk */

#define REG_UMI_TCR_LOWFREQ             0x40000000

/* 1=synch write, 0=async write */

#define REG_UMI_TCR_MEMTYPE_SYNCWRITE   0x20000000

/* 1=synch read, 0=async read */

#define REG_UMI_TCR_MEMTYPE_SYNCREAD    0x10000000

/* 1=page mode read, 0=normal mode read */

#define REG_UMI_TCR_MEMTYPE_PAGEREAD    0x08000000

/* page size/burst size (wrap only) */

#define REG_UMI_TCR_MEMTYPE_PGSZ_MASK   0x07000000

/* 4 word */

#define REG_UMI_TCR_MEMTYPE_PGSZ_4      0x00000000

/* 8 word */

#define REG_UMI_TCR_MEMTYPE_PGSZ_8      0x01000000

/* 16 word */

#define REG_UMI_TCR_MEMTYPE_PGSZ_16     0x02000000

/* 32 word */

#define REG_UMI_TCR_MEMTYPE_PGSZ_32     0x03000000

/* 64 word */

#define REG_UMI_TCR_MEMTYPE_PGSZ_64     0x04000000

/* 128 word */

#define REG_UMI_TCR_MEMTYPE_PGSZ_128    0x05000000

/* 256 word */

#define REG_UMI_TCR_MEMTYPE_PGSZ_256    0x06000000

/* 512 word */

#define REG_UMI_TCR_MEMTYPE_PGSZ_512    0x07000000

/* Page read access cycle / Burst write latency (n+2 / n+1) */

#define REG_UMI_TCR_TPRC_TWLC_MASK      0x00f80000

/* Bus turnaround cycle (n) */

#define REG_UMI_TCR_TBTA_MASK           0x00070000

/* Write pulse width cycle (n+1) */

#define REG_UMI_TCR_TWP_MASK            0x0000f800

/* Write recovery cycle (n+1) */

#define REG_UMI_TCR_TWR_MASK            0x00000600

/* Write address setup cycle (n+1) */

#define REG_UMI_TCR_TAS_MASK            0x00000180

/* Output enable delay cycle (n) */

#define REG_UMI_TCR_TOE_MASK            0x00000060

/* Read access cycle / Burst read latency (n+2 / n+1) */

#define REG_UMI_TCR_TRC_TLC_MASK        0x0000001f



/* REG_UMI_MMD_ICR bits */

/* Flash write protection pin control */

#define REG_UMI_MMD_ICR_FLASH_WP            0x8000

/* Extend hold time for sram0, sram1 csn (39 MHz operation) */

#define REG_UMI_MMD_ICR_XHCS                0x4000

/* Enable SDRAM 2 interface control */

#define REG_UMI_MMD_ICR_SDRAM2EN            0x2000

/* Enable merge of flash banks 0/1 to 512 MBit bank */

#define REG_UMI_MMD_ICR_INST512             0x1000

/* Enable merge of flash banks 1/2 to 512 MBit bank */

#define REG_UMI_MMD_ICR_DATA512             0x0800

/* Enable SDRAM interface control */

#define REG_UMI_MMD_ICR_SDRAMEN             0x0400

/* Polarity of busy state of Burst Wait Signal */

#define REG_UMI_MMD_ICR_WAITPOL             0x0200

/* Enable burst clock stopped when not accessing external burst flash/sram */

#define REG_UMI_MMD_ICR_BCLKSTOP            0x0100

/* Enable the peri1_csn to replace flash1_csn in 512 Mb flash mode */

#define REG_UMI_MMD_ICR_PERI1EN             0x0080

/* Enable the peri2_csn to replace sdram_csn */

#define REG_UMI_MMD_ICR_PERI2EN             0x0040

/* Enable the peri3_csn to replace sdram2_csn */

#define REG_UMI_MMD_ICR_PERI3EN             0x0020

/* Enable sram bank1 for H/W controlled MRS */

#define REG_UMI_MMD_ICR_MRSB1               0x0010

/* Enable sram bank0 for H/W controlled MRS */

#define REG_UMI_MMD_ICR_MRSB0               0x0008

/* Polarity for assert3ed state of H/W controlled MRS */

#define REG_UMI_MMD_ICR_MRSPOL              0x0004

/* 0: S/W controllable ZZ/MRS/CRE/P-Mode pin */

/* 1: H/W controlled ZZ/MRS/CRE/P-Mode, same timing as CS */

#define REG_UMI_MMD_ICR_MRSMODE             0x0002

/* MRS state for S/W controlled mode */

#define REG_UMI_MMD_ICR_MRSSTATE            0x0001



/* REG_UMI_NAND_TCR bits */

/* Enable software to control CS */

#define REG_UMI_NAND_TCR_CS_SWCTRL          0x80000000

/* 16-bit nand wordsize if set */

#define REG_UMI_NAND_TCR_WORD16             0x40000000

/* Bus turnaround cycle (n) */

#define REG_UMI_NAND_TCR_TBTA_MASK          0x00070000

/* Write pulse width cycle (n+1) */

#define REG_UMI_NAND_TCR_TWP_MASK           0x0000f800

/* Write recovery cycle (n+1) */

#define REG_UMI_NAND_TCR_TWR_MASK           0x00000600

/* Write address setup cycle (n+1) */

#define REG_UMI_NAND_TCR_TAS_MASK           0x00000180

/* Output enable delay cycle (n) */

#define REG_UMI_NAND_TCR_TOE_MASK           0x00000060

/* Read access cycle (n+2) */

#define REG_UMI_NAND_TCR_TRC_TLC_MASK       0x0000001f



/* REG_UMI_NAND_RCSR bits */

/* Status: Ready=1, Busy=0 */

#define REG_UMI_NAND_RCSR_RDY               0x02

/* Keep CS asserted during operation */

#define REG_UMI_NAND_RCSR_CS_ASSERTED       0x01



/* REG_UMI_NAND_ECC_CSR bits */

/* Interrupt status - read-only */

#define REG_UMI_NAND_ECC_CSR_NANDINT        0x80000000

/* Read: Status of ECC done, Write: clear ECC interrupt */

#define REG_UMI_NAND_ECC_CSR_ECCINT_RAW     0x00800000

/* Read: Status of R/B, Write: clear R/B interrupt */

#define REG_UMI_NAND_ECC_CSR_RBINT_RAW      0x00400000

/* 1 = Enable ECC Interrupt */

#define REG_UMI_NAND_ECC_CSR_ECCINT_ENABLE  0x00008000

/* 1 = Assert interrupt at rising edge of R/B_ */

#define REG_UMI_NAND_ECC_CSR_RBINT_ENABLE   0x00004000

/* Calculate ECC by 0=512 bytes, 1=256 bytes */

#define REG_UMI_NAND_ECC_CSR_256BYTE        0x00000080

/* Enable ECC in hardware */

#define REG_UMI_NAND_ECC_CSR_ECC_ENABLE     0x00000001



/* REG_UMI_BCH_CTRL_STATUS bits */

/* Shift to Indicate Number of correctable errors detected */

#define REG_UMI_BCH_CTRL_STATUS_NB_CORR_ERROR_SHIFT 20

/* Indicate Number of correctable errors detected */

#define REG_UMI_BCH_CTRL_STATUS_NB_CORR_ERROR 0x00F00000

/* Indicate Errors detected during read but uncorrectable */

#define REG_UMI_BCH_CTRL_STATUS_UNCORR_ERR    0x00080000

/* Indicate Errors detected during read and are correctable */

#define REG_UMI_BCH_CTRL_STATUS_CORR_ERR      0x00040000

/* Flag indicates BCH's ECC status of read process are valid */

#define REG_UMI_BCH_CTRL_STATUS_RD_ECC_VALID  0x00020000

/* Flag indicates BCH's ECC status of write process are valid */

#define REG_UMI_BCH_CTRL_STATUS_WR_ECC_VALID  0x00010000

/* Pause ECC calculation */

#define REG_UMI_BCH_CTRL_STATUS_PAUSE_ECC_DEC 0x00000010

/* Enable Interrupt */

#define REG_UMI_BCH_CTRL_STATUS_INT_EN        0x00000004

/* Enable ECC during read */

#define REG_UMI_BCH_CTRL_STATUS_ECC_RD_EN     0x00000002

/* Enable ECC during write */

#define REG_UMI_BCH_CTRL_STATUS_ECC_WR_EN     0x00000001

/* Mask for location */

#define REG_UMI_BCH_ERR_LOC_MASK              0x00001FFF

/* location within a byte */

#define REG_UMI_BCH_ERR_LOC_BYTE              0x00000007

/* location within a word */

#define REG_UMI_BCH_ERR_LOC_WORD              0x00000018

/* location within a page (512 byte) */

#define REG_UMI_BCH_ERR_LOC_PAGE              0x00001FE0

#define REG_UMI_BCH_ERR_LOC_ADDR(index)     (__REG32(HW_UMI_BASE + 0x64 + (index / 2)*4) >> ((index % 2) * 16))

#endif

drivers/mtd/nand/Kconfig

+16 −0
Original line number Diff line number Diff line
@@ -203,6 +203,22 @@ config MTD_NAND_S3C2410_CLKSTOP 
	  when the is NAND chip selected or released, but will save

	  approximately 5mA of power when there is nothing happening.



config MTD_NAND_BCM_UMI

	tristate "NAND Flash support for BCM Reference Boards"

	depends on ARCH_BCMRING && MTD_NAND

	help

	  This enables the NAND flash controller on the BCM UMI block.



	  No board specfic support is done by this driver, each board

	  must advertise a platform_device for the driver to attach.



config MTD_NAND_BCM_UMI_HWCS

	bool "BCM UMI NAND Hardware CS"

	depends on MTD_NAND_BCM_UMI

	help

	  Enable the use of the BCM UMI block's internal CS using NAND.

	  This should only be used if you know the external NAND CS can toggle.



config MTD_NAND_DISKONCHIP

	tristate "DiskOnChip 2000, Millennium and Millennium Plus (NAND reimplementation) (EXPERIMENTAL)"

	depends on EXPERIMENTAL

drivers/mtd/nand/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -42,5 +42,6 @@ obj-$(CONFIG_MTD_NAND_SOCRATES) += socrates_nand.o 
obj-$(CONFIG_MTD_NAND_TXX9NDFMC)	+= txx9ndfmc.o

obj-$(CONFIG_MTD_NAND_W90P910)		+= w90p910_nand.o

obj-$(CONFIG_MTD_NAND_NOMADIK)		+= nomadik_nand.o

obj-$(CONFIG_MTD_NAND_BCM_UMI)		+= bcm_umi_nand.o nand_bcm_umi.o



nand-objs := nand_base.o nand_bbt.o