mtd: add bcmring nand driver

Signed-off-by: Leo Hao Chen <leochen@broadcom.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

3 files changed, 313 insertions, 0 deletions

diff --git a/arch/arm/mach-bcmring/arch.c b/arch/arm/mach-bcmring/arch.c
index 0da693b0f7e1..074dad6b1c18 100644
--- a/arch/arm/mach-bcmring/arch.c
+++ b/arch/arm/mach-bcmring/arch.c
@@ -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 = {
diff --git a/arch/arm/mach-bcmring/include/mach/reg_nand.h b/arch/arm/mach-bcmring/include/mach/reg_nand.h
new file mode 100644
index 000000000000..387376ffb56b
--- /dev/null
+++ b/arch/arm/mach-bcmring/include/mach/reg_nand.h
@@ -0,0 +1,66 @@
+/*****************************************************************************
+* 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
diff --git a/arch/arm/mach-bcmring/include/mach/reg_umi.h b/arch/arm/mach-bcmring/include/mach/reg_umi.h
new file mode 100644
index 000000000000..06a355481ea6
--- /dev/null
+++ b/arch/arm/mach-bcmring/include/mach/reg_umi.h
@@ -0,0 +1,237 @@
+/*****************************************************************************
+* 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