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-rw-r--r--drivers/gpio/tegra_gpio.c8
-rw-r--r--drivers/i2c/tegra_i2c.c12
-rw-r--r--drivers/input/Makefile2
-rw-r--r--drivers/mmc/mmc.c3
-rw-r--r--drivers/mmc/mxsmmc.c4
-rw-r--r--drivers/mmc/tegra_mmc.c34
-rw-r--r--drivers/mmc/tegra_mmc.h131
-rw-r--r--drivers/mtd/nand/Makefile1
-rw-r--r--drivers/mtd/nand/mxs_nand.c2
-rw-r--r--drivers/mtd/nand/nand_base.c3
-rw-r--r--drivers/mtd/nand/tegra_nand.c1026
-rw-r--r--drivers/mtd/nand/tegra_nand.h257
-rw-r--r--drivers/spi/mxs_spi.c58
-rw-r--r--drivers/spi/tegra_spi.c6
14 files changed, 1357 insertions, 190 deletions
diff --git a/drivers/gpio/tegra_gpio.c b/drivers/gpio/tegra_gpio.c
index 8cfcf82..747f4cf 100644
--- a/drivers/gpio/tegra_gpio.c
+++ b/drivers/gpio/tegra_gpio.c
@@ -34,10 +34,10 @@
#include <asm/gpio.h>
enum {
- TEGRA20_CMD_INFO,
- TEGRA20_CMD_PORT,
- TEGRA20_CMD_OUTPUT,
- TEGRA20_CMD_INPUT,
+ TEGRA_CMD_INFO,
+ TEGRA_CMD_PORT,
+ TEGRA_CMD_OUTPUT,
+ TEGRA_CMD_INPUT,
};
static struct gpio_names {
diff --git a/drivers/i2c/tegra_i2c.c b/drivers/i2c/tegra_i2c.c
index b4eb491..e3be14e 100644
--- a/drivers/i2c/tegra_i2c.c
+++ b/drivers/i2c/tegra_i2c.c
@@ -262,7 +262,7 @@ exit:
return error;
}
-static int tegra20_i2c_write_data(u32 addr, u8 *data, u32 len)
+static int tegra_i2c_write_data(u32 addr, u8 *data, u32 len)
{
int error;
struct i2c_trans_info trans_info;
@@ -275,12 +275,12 @@ static int tegra20_i2c_write_data(u32 addr, u8 *data, u32 len)
error = send_recv_packets(&i2c_controllers[i2c_bus_num], &trans_info);
if (error)
- debug("tegra20_i2c_write_data: Error (%d) !!!\n", error);
+ debug("tegra_i2c_write_data: Error (%d) !!!\n", error);
return error;
}
-static int tegra20_i2c_read_data(u32 addr, u8 *data, u32 len)
+static int tegra_i2c_read_data(u32 addr, u8 *data, u32 len)
{
int error;
struct i2c_trans_info trans_info;
@@ -293,7 +293,7 @@ static int tegra20_i2c_read_data(u32 addr, u8 *data, u32 len)
error = send_recv_packets(&i2c_controllers[i2c_bus_num], &trans_info);
if (error)
- debug("tegra20_i2c_read_data: Error (%d) !!!\n", error);
+ debug("tegra_i2c_read_data: Error (%d) !!!\n", error);
return error;
}
@@ -438,7 +438,7 @@ int i2c_write_data(uchar chip, uchar *buffer, int len)
debug("\n");
/* Shift 7-bit address over for lower-level i2c functions */
- rc = tegra20_i2c_write_data(chip << 1, buffer, len);
+ rc = tegra_i2c_write_data(chip << 1, buffer, len);
if (rc)
debug("i2c_write_data(): rc=%d\n", rc);
@@ -452,7 +452,7 @@ int i2c_read_data(uchar chip, uchar *buffer, int len)
debug("inside i2c_read_data():\n");
/* Shift 7-bit address over for lower-level i2c functions */
- rc = tegra20_i2c_read_data(chip << 1, buffer, len);
+ rc = tegra_i2c_read_data(chip << 1, buffer, len);
if (rc) {
debug("i2c_read_data(): rc=%d\n", rc);
return rc;
diff --git a/drivers/input/Makefile b/drivers/input/Makefile
index 68c6a16..0805e86 100644
--- a/drivers/input/Makefile
+++ b/drivers/input/Makefile
@@ -26,7 +26,7 @@ include $(TOPDIR)/config.mk
LIB := $(obj)libinput.o
COBJS-$(CONFIG_I8042_KBD) += i8042.o
-COBJS-$(CONFIG_TEGRA20_KEYBOARD) += tegra-kbc.o
+COBJS-$(CONFIG_TEGRA_KEYBOARD) += tegra-kbc.o
ifdef CONFIG_PS2KBD
COBJS-y += keyboard.o pc_keyb.o
COBJS-$(CONFIG_PS2MULT) += ps2mult.o ps2ser.o
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index c1c2862..551d6a9 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1162,7 +1162,8 @@ int mmc_startup(struct mmc *mmc)
}
/* store the partition info of emmc */
- if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT)
+ if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
+ ext_csd[EXT_CSD_BOOT_MULT])
mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
}
diff --git a/drivers/mmc/mxsmmc.c b/drivers/mmc/mxsmmc.c
index 9a98c6b..c80b41b 100644
--- a/drivers/mmc/mxsmmc.c
+++ b/drivers/mmc/mxsmmc.c
@@ -119,6 +119,10 @@ static int mxsmmc_send_cmd_dma(struct mxsmmc_priv *priv, struct mmc_data *data)
(uint32_t)(priv->desc->cmd.address + cache_data_count));
}
+ /* Invalidate the area, so no writeback into the RAM races with DMA */
+ invalidate_dcache_range((uint32_t)priv->desc->cmd.address,
+ (uint32_t)(priv->desc->cmd.address + cache_data_count));
+
priv->desc->cmd.data |= MXS_DMA_DESC_IRQ | MXS_DMA_DESC_DEC_SEM |
(data_count << MXS_DMA_DESC_BYTES_OFFSET);
diff --git a/drivers/mmc/tegra_mmc.c b/drivers/mmc/tegra_mmc.c
index ddfa727..ca8fad8 100644
--- a/drivers/mmc/tegra_mmc.c
+++ b/drivers/mmc/tegra_mmc.c
@@ -25,7 +25,7 @@
#include <asm/io.h>
#include <asm/arch/clk_rst.h>
#include <asm/arch/clock.h>
-#include "tegra_mmc.h"
+#include <asm/arch/tegra_mmc.h>
/* support 4 mmc hosts */
struct mmc mmc_dev[4];
@@ -39,31 +39,31 @@ struct mmc_host mmc_host[4];
* @param host Structure to fill in (base, reg, mmc_id)
* @param dev_index Device index (0-3)
*/
-static void tegra20_get_setup(struct mmc_host *host, int dev_index)
+static void tegra_get_setup(struct mmc_host *host, int dev_index)
{
- debug("tegra20_get_base_mmc: dev_index = %d\n", dev_index);
+ debug("tegra_get_setup: dev_index = %d\n", dev_index);
switch (dev_index) {
case 1:
- host->base = TEGRA20_SDMMC3_BASE;
+ host->base = TEGRA_SDMMC3_BASE;
host->mmc_id = PERIPH_ID_SDMMC3;
break;
case 2:
- host->base = TEGRA20_SDMMC2_BASE;
+ host->base = TEGRA_SDMMC2_BASE;
host->mmc_id = PERIPH_ID_SDMMC2;
break;
case 3:
- host->base = TEGRA20_SDMMC1_BASE;
+ host->base = TEGRA_SDMMC1_BASE;
host->mmc_id = PERIPH_ID_SDMMC1;
break;
case 0:
default:
- host->base = TEGRA20_SDMMC4_BASE;
+ host->base = TEGRA_SDMMC4_BASE;
host->mmc_id = PERIPH_ID_SDMMC4;
break;
}
- host->reg = (struct tegra20_mmc *)host->base;
+ host->reg = (struct tegra_mmc *)host->base;
}
static void mmc_prepare_data(struct mmc_host *host, struct mmc_data *data)
@@ -345,7 +345,7 @@ static void mmc_change_clock(struct mmc_host *host, uint clock)
debug(" mmc_change_clock called\n");
/*
- * Change Tegra20 SDMMCx clock divisor here. Source is 216MHz,
+ * Change Tegra SDMMCx clock divisor here. Source is 216MHz,
* PLLP_OUT0
*/
if (clock == 0)
@@ -494,11 +494,11 @@ static int mmc_core_init(struct mmc *mmc)
return 0;
}
-int tegra20_mmc_getcd(struct mmc *mmc)
+int tegra_mmc_getcd(struct mmc *mmc)
{
struct mmc_host *host = (struct mmc_host *)mmc->priv;
- debug("tegra20_mmc_getcd called\n");
+ debug("tegra_mmc_getcd called\n");
if (host->cd_gpio >= 0)
return !gpio_get_value(host->cd_gpio);
@@ -506,13 +506,13 @@ int tegra20_mmc_getcd(struct mmc *mmc)
return 1;
}
-int tegra20_mmc_init(int dev_index, int bus_width, int pwr_gpio, int cd_gpio)
+int tegra_mmc_init(int dev_index, int bus_width, int pwr_gpio, int cd_gpio)
{
struct mmc_host *host;
char gpusage[12]; /* "SD/MMCn PWR" or "SD/MMCn CD" */
struct mmc *mmc;
- debug(" tegra20_mmc_init: index %d, bus width %d "
+ debug(" tegra_mmc_init: index %d, bus width %d "
"pwr_gpio %d cd_gpio %d\n",
dev_index, bus_width, pwr_gpio, cd_gpio);
@@ -521,7 +521,7 @@ int tegra20_mmc_init(int dev_index, int bus_width, int pwr_gpio, int cd_gpio)
host->clock = 0;
host->pwr_gpio = pwr_gpio;
host->cd_gpio = cd_gpio;
- tegra20_get_setup(host, dev_index);
+ tegra_get_setup(host, dev_index);
clock_start_periph_pll(host->mmc_id, CLOCK_ID_PERIPH, 20000000);
@@ -539,12 +539,12 @@ int tegra20_mmc_init(int dev_index, int bus_width, int pwr_gpio, int cd_gpio)
mmc = &mmc_dev[dev_index];
- sprintf(mmc->name, "Tegra20 SD/MMC");
+ sprintf(mmc->name, "Tegra SD/MMC");
mmc->priv = host;
mmc->send_cmd = mmc_send_cmd;
mmc->set_ios = mmc_set_ios;
mmc->init = mmc_core_init;
- mmc->getcd = tegra20_mmc_getcd;
+ mmc->getcd = tegra_mmc_getcd;
mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
if (bus_width == 8)
@@ -559,7 +559,7 @@ int tegra20_mmc_init(int dev_index, int bus_width, int pwr_gpio, int cd_gpio)
* max freq is highest HS eMMC clock as per the SD/MMC spec
* (actually 52MHz)
* Both of these are the closest equivalents w/216MHz source
- * clock and Tegra20 SDMMC divisors.
+ * clock and Tegra SDMMC divisors.
*/
mmc->f_min = 375000;
mmc->f_max = 48000000;
diff --git a/drivers/mmc/tegra_mmc.h b/drivers/mmc/tegra_mmc.h
deleted file mode 100644
index b1f2564..0000000
--- a/drivers/mmc/tegra_mmc.h
+++ /dev/null
@@ -1,131 +0,0 @@
-/*
- * (C) Copyright 2009 SAMSUNG Electronics
- * Minkyu Kang <mk7.kang@samsung.com>
- * Portions Copyright (C) 2011-2012 NVIDIA Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-#ifndef __TEGRA_MMC_H_
-#define __TEGRA_MMC_H_
-
-#define TEGRA20_SDMMC1_BASE 0xC8000000
-#define TEGRA20_SDMMC2_BASE 0xC8000200
-#define TEGRA20_SDMMC3_BASE 0xC8000400
-#define TEGRA20_SDMMC4_BASE 0xC8000600
-
-#ifndef __ASSEMBLY__
-struct tegra20_mmc {
- unsigned int sysad; /* _SYSTEM_ADDRESS_0 */
- unsigned short blksize; /* _BLOCK_SIZE_BLOCK_COUNT_0 15:00 */
- unsigned short blkcnt; /* _BLOCK_SIZE_BLOCK_COUNT_0 31:16 */
- unsigned int argument; /* _ARGUMENT_0 */
- unsigned short trnmod; /* _CMD_XFER_MODE_0 15:00 xfer mode */
- unsigned short cmdreg; /* _CMD_XFER_MODE_0 31:16 cmd reg */
- unsigned int rspreg0; /* _RESPONSE_R0_R1_0 CMD RESP 31:00 */
- unsigned int rspreg1; /* _RESPONSE_R2_R3_0 CMD RESP 63:32 */
- unsigned int rspreg2; /* _RESPONSE_R4_R5_0 CMD RESP 95:64 */
- unsigned int rspreg3; /* _RESPONSE_R6_R7_0 CMD RESP 127:96 */
- unsigned int bdata; /* _BUFFER_DATA_PORT_0 */
- unsigned int prnsts; /* _PRESENT_STATE_0 */
- unsigned char hostctl; /* _POWER_CONTROL_HOST_0 7:00 */
- unsigned char pwrcon; /* _POWER_CONTROL_HOST_0 15:8 */
- unsigned char blkgap; /* _POWER_CONTROL_HOST_9 23:16 */
- unsigned char wakcon; /* _POWER_CONTROL_HOST_0 31:24 */
- unsigned short clkcon; /* _CLOCK_CONTROL_0 15:00 */
- unsigned char timeoutcon; /* _TIMEOUT_CTRL 23:16 */
- unsigned char swrst; /* _SW_RESET_ 31:24 */
- unsigned int norintsts; /* _INTERRUPT_STATUS_0 */
- unsigned int norintstsen; /* _INTERRUPT_STATUS_ENABLE_0 */
- unsigned int norintsigen; /* _INTERRUPT_SIGNAL_ENABLE_0 */
- unsigned short acmd12errsts; /* _AUTO_CMD12_ERR_STATUS_0 15:00 */
- unsigned char res1[2]; /* _RESERVED 31:16 */
- unsigned int capareg; /* _CAPABILITIES_0 */
- unsigned char res2[4]; /* RESERVED, offset 44h-47h */
- unsigned int maxcurr; /* _MAXIMUM_CURRENT_0 */
- unsigned char res3[4]; /* RESERVED, offset 4Ch-4Fh */
- unsigned short setacmd12err; /* offset 50h */
- unsigned short setinterr; /* offset 52h */
- unsigned char admaerr; /* offset 54h */
- unsigned char res4[3]; /* RESERVED, offset 55h-57h */
- unsigned long admaaddr; /* offset 58h-5Fh */
- unsigned char res5[0x9c]; /* RESERVED, offset 60h-FBh */
- unsigned short slotintstatus; /* offset FCh */
- unsigned short hcver; /* HOST Version */
- unsigned char res6[0x100]; /* RESERVED, offset 100h-1FFh */
-};
-
-#define TEGRA_MMC_HOSTCTL_DMASEL_MASK (3 << 3)
-#define TEGRA_MMC_HOSTCTL_DMASEL_SDMA (0 << 3)
-#define TEGRA_MMC_HOSTCTL_DMASEL_ADMA2_32BIT (2 << 3)
-#define TEGRA_MMC_HOSTCTL_DMASEL_ADMA2_64BIT (3 << 3)
-
-#define TEGRA_MMC_TRNMOD_DMA_ENABLE (1 << 0)
-#define TEGRA_MMC_TRNMOD_BLOCK_COUNT_ENABLE (1 << 1)
-#define TEGRA_MMC_TRNMOD_DATA_XFER_DIR_SEL_WRITE (0 << 4)
-#define TEGRA_MMC_TRNMOD_DATA_XFER_DIR_SEL_READ (1 << 4)
-#define TEGRA_MMC_TRNMOD_MULTI_BLOCK_SELECT (1 << 5)
-
-#define TEGRA_MMC_CMDREG_RESP_TYPE_SELECT_MASK (3 << 0)
-#define TEGRA_MMC_CMDREG_RESP_TYPE_SELECT_NO_RESPONSE (0 << 0)
-#define TEGRA_MMC_CMDREG_RESP_TYPE_SELECT_LENGTH_136 (1 << 0)
-#define TEGRA_MMC_CMDREG_RESP_TYPE_SELECT_LENGTH_48 (2 << 0)
-#define TEGRA_MMC_CMDREG_RESP_TYPE_SELECT_LENGTH_48_BUSY (3 << 0)
-
-#define TEGRA_MMC_TRNMOD_CMD_CRC_CHECK (1 << 3)
-#define TEGRA_MMC_TRNMOD_CMD_INDEX_CHECK (1 << 4)
-#define TEGRA_MMC_TRNMOD_DATA_PRESENT_SELECT_DATA_TRANSFER (1 << 5)
-
-#define TEGRA_MMC_PRNSTS_CMD_INHIBIT_CMD (1 << 0)
-#define TEGRA_MMC_PRNSTS_CMD_INHIBIT_DAT (1 << 1)
-
-#define TEGRA_MMC_CLKCON_INTERNAL_CLOCK_ENABLE (1 << 0)
-#define TEGRA_MMC_CLKCON_INTERNAL_CLOCK_STABLE (1 << 1)
-#define TEGRA_MMC_CLKCON_SD_CLOCK_ENABLE (1 << 2)
-
-#define TEGRA_MMC_CLKCON_SDCLK_FREQ_SEL_SHIFT 8
-#define TEGRA_MMC_CLKCON_SDCLK_FREQ_SEL_MASK (0xff << 8)
-
-#define TEGRA_MMC_SWRST_SW_RESET_FOR_ALL (1 << 0)
-#define TEGRA_MMC_SWRST_SW_RESET_FOR_CMD_LINE (1 << 1)
-#define TEGRA_MMC_SWRST_SW_RESET_FOR_DAT_LINE (1 << 2)
-
-#define TEGRA_MMC_NORINTSTS_CMD_COMPLETE (1 << 0)
-#define TEGRA_MMC_NORINTSTS_XFER_COMPLETE (1 << 1)
-#define TEGRA_MMC_NORINTSTS_DMA_INTERRUPT (1 << 3)
-#define TEGRA_MMC_NORINTSTS_ERR_INTERRUPT (1 << 15)
-#define TEGRA_MMC_NORINTSTS_CMD_TIMEOUT (1 << 16)
-
-#define TEGRA_MMC_NORINTSTSEN_CMD_COMPLETE (1 << 0)
-#define TEGRA_MMC_NORINTSTSEN_XFER_COMPLETE (1 << 1)
-#define TEGRA_MMC_NORINTSTSEN_DMA_INTERRUPT (1 << 3)
-#define TEGRA_MMC_NORINTSTSEN_BUFFER_WRITE_READY (1 << 4)
-#define TEGRA_MMC_NORINTSTSEN_BUFFER_READ_READY (1 << 5)
-
-#define TEGRA_MMC_NORINTSIGEN_XFER_COMPLETE (1 << 1)
-
-struct mmc_host {
- struct tegra20_mmc *reg;
- unsigned int version; /* SDHCI spec. version */
- unsigned int clock; /* Current clock (MHz) */
- unsigned int base; /* Base address, SDMMC1/2/3/4 */
- enum periph_id mmc_id; /* Peripheral ID: PERIPH_ID_... */
- int pwr_gpio; /* Power GPIO */
- int cd_gpio; /* Change Detect GPIO */
-};
-
-#endif /* __ASSEMBLY__ */
-#endif /* __TEGRA_MMC_H_ */
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 29dc20e..beb99ca 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -62,6 +62,7 @@ COBJS-$(CONFIG_NAND_NOMADIK) += nomadik.o
COBJS-$(CONFIG_NAND_S3C2410) += s3c2410_nand.o
COBJS-$(CONFIG_NAND_S3C64XX) += s3c64xx.o
COBJS-$(CONFIG_NAND_SPEAR) += spr_nand.o
+COBJS-$(CONFIG_TEGRA_NAND) += tegra_nand.o
COBJS-$(CONFIG_NAND_OMAP_GPMC) += omap_gpmc.o
COBJS-$(CONFIG_NAND_PLAT) += nand_plat.o
endif
diff --git a/drivers/mtd/nand/mxs_nand.c b/drivers/mtd/nand/mxs_nand.c
index bf9414f..4701be8 100644
--- a/drivers/mtd/nand/mxs_nand.c
+++ b/drivers/mtd/nand/mxs_nand.c
@@ -25,10 +25,10 @@
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
+#include <common.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/types.h>
-#include <common.h>
#include <malloc.h>
#include <asm/errno.h>
#include <asm/io.h>
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index bfd668f..891af1f 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2936,7 +2936,8 @@ int nand_scan_tail(struct mtd_info *mtd)
struct nand_chip *chip = mtd->priv;
if (!(chip->options & NAND_OWN_BUFFERS))
- chip->buffers = kmalloc(sizeof(*chip->buffers), GFP_KERNEL);
+ chip->buffers = memalign(ARCH_DMA_MINALIGN,
+ sizeof(*chip->buffers));
if (!chip->buffers)
return -ENOMEM;
diff --git a/drivers/mtd/nand/tegra_nand.c b/drivers/mtd/nand/tegra_nand.c
new file mode 100644
index 0000000..8c1de34
--- /dev/null
+++ b/drivers/mtd/nand/tegra_nand.c
@@ -0,0 +1,1026 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2011 NVIDIA Corporation <www.nvidia.com>
+ * (C) Copyright 2006 Detlev Zundel, dzu@denx.de
+ * (C) Copyright 2006 DENX Software Engineering
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <nand.h>
+#include <asm/arch/clk_rst.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/funcmux.h>
+#include <asm/arch/gpio.h>
+#include <asm/errno.h>
+#include <asm-generic/gpio.h>
+#include <fdtdec.h>
+#include "tegra_nand.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define NAND_CMD_TIMEOUT_MS 10
+
+#define SKIPPED_SPARE_BYTES 4
+
+/* ECC bytes to be generated for tag data */
+#define TAG_ECC_BYTES 4
+
+/* 64 byte oob block info for large page (== 2KB) device
+ *
+ * OOB flash layout for Tegra with Reed-Solomon 4 symbol correct ECC:
+ * Skipped bytes(4)
+ * Main area Ecc(36)
+ * Tag data(20)
+ * Tag data Ecc(4)
+ *
+ * Yaffs2 will use 16 tag bytes.
+ */
+static struct nand_ecclayout eccoob = {
+ .eccbytes = 36,
+ .eccpos = {
+ 4, 5, 6, 7, 8, 9, 10, 11, 12,
+ 13, 14, 15, 16, 17, 18, 19, 20, 21,
+ 22, 23, 24, 25, 26, 27, 28, 29, 30,
+ 31, 32, 33, 34, 35, 36, 37, 38, 39,
+ },
+ .oobavail = 20,
+ .oobfree = {
+ {
+ .offset = 40,
+ .length = 20,
+ },
+ }
+};
+
+enum {
+ ECC_OK,
+ ECC_TAG_ERROR = 1 << 0,
+ ECC_DATA_ERROR = 1 << 1
+};
+
+/* Timing parameters */
+enum {
+ FDT_NAND_MAX_TRP_TREA,
+ FDT_NAND_TWB,
+ FDT_NAND_MAX_TCR_TAR_TRR,
+ FDT_NAND_TWHR,
+ FDT_NAND_MAX_TCS_TCH_TALS_TALH,
+ FDT_NAND_TWH,
+ FDT_NAND_TWP,
+ FDT_NAND_TRH,
+ FDT_NAND_TADL,
+
+ FDT_NAND_TIMING_COUNT
+};
+
+/* Information about an attached NAND chip */
+struct fdt_nand {
+ struct nand_ctlr *reg;
+ int enabled; /* 1 to enable, 0 to disable */
+ struct fdt_gpio_state wp_gpio; /* write-protect GPIO */
+ s32 width; /* bit width, normally 8 */
+ u32 timing[FDT_NAND_TIMING_COUNT];
+};
+
+struct nand_drv {
+ struct nand_ctlr *reg;
+
+ /*
+ * When running in PIO mode to get READ ID bytes from register
+ * RESP_0, we need this variable as an index to know which byte in
+ * register RESP_0 should be read.
+ * Because common code in nand_base.c invokes read_byte function two
+ * times for NAND_CMD_READID.
+ * And our controller returns 4 bytes at once in register RESP_0.
+ */
+ int pio_byte_index;
+ struct fdt_nand config;
+};
+
+static struct nand_drv nand_ctrl;
+static struct mtd_info *our_mtd;
+static struct nand_chip nand_chip[CONFIG_SYS_MAX_NAND_DEVICE];
+
+#ifdef CONFIG_SYS_DCACHE_OFF
+static inline void dma_prepare(void *start, unsigned long length,
+ int is_writing)
+{
+}
+#else
+/**
+ * Prepare for a DMA transaction
+ *
+ * For a write we flush out our data. For a read we invalidate, since we
+ * need to do this before we read from the buffer after the DMA has
+ * completed, so may as well do it now.
+ *
+ * @param start Start address for DMA buffer (should be cache-aligned)
+ * @param length Length of DMA buffer in bytes
+ * @param is_writing 0 if reading, non-zero if writing
+ */
+static void dma_prepare(void *start, unsigned long length, int is_writing)
+{
+ unsigned long addr = (unsigned long)start;
+
+ length = ALIGN(length, ARCH_DMA_MINALIGN);
+ if (is_writing)
+ flush_dcache_range(addr, addr + length);
+ else
+ invalidate_dcache_range(addr, addr + length);
+}
+#endif
+
+/**
+ * Wait for command completion
+ *
+ * @param reg nand_ctlr structure
+ * @return
+ * 1 - Command completed
+ * 0 - Timeout
+ */
+static int nand_waitfor_cmd_completion(struct nand_ctlr *reg)
+{
+ u32 reg_val;
+ int running;
+ int i;
+
+ for (i = 0; i < NAND_CMD_TIMEOUT_MS * 1000; i++) {
+ if ((readl(&reg->command) & CMD_GO) ||
+ !(readl(&reg->status) & STATUS_RBSY0) ||
+ !(readl(&reg->isr) & ISR_IS_CMD_DONE)) {
+ udelay(1);
+ continue;
+ }
+ reg_val = readl(&reg->dma_mst_ctrl);
+ /*
+ * If DMA_MST_CTRL_EN_A_ENABLE or DMA_MST_CTRL_EN_B_ENABLE
+ * is set, that means DMA engine is running.
+ *
+ * Then we have to wait until DMA_MST_CTRL_IS_DMA_DONE
+ * is cleared, indicating DMA transfer completion.
+ */
+ running = reg_val & (DMA_MST_CTRL_EN_A_ENABLE |
+ DMA_MST_CTRL_EN_B_ENABLE);
+ if (!running || (reg_val & DMA_MST_CTRL_IS_DMA_DONE))
+ return 1;
+ udelay(1);
+ }
+ return 0;
+}
+
+/**
+ * Read one byte from the chip
+ *
+ * @param mtd MTD device structure
+ * @return data byte
+ *
+ * Read function for 8bit bus-width
+ */
+static uint8_t read_byte(struct mtd_info *mtd)
+{
+ struct nand_chip *chip = mtd->priv;
+ u32 dword_read;
+ struct nand_drv *info;
+
+ info = (struct nand_drv *)chip->priv;
+
+ /* In PIO mode, only 4 bytes can be transferred with single CMD_GO. */
+ if (info->pio_byte_index > 3) {
+ info->pio_byte_index = 0;
+ writel(CMD_GO | CMD_PIO
+ | CMD_RX | CMD_CE0,
+ &info->reg->command);
+ if (!nand_waitfor_cmd_completion(info->reg))
+ printf("Command timeout\n");
+ }
+
+ dword_read = readl(&info->reg->resp);
+ dword_read = dword_read >> (8 * info->pio_byte_index);
+ info->pio_byte_index++;
+ return (uint8_t)dword_read;
+}
+
+/**
+ * Check NAND status to see if it is ready or not
+ *
+ * @param mtd MTD device structure
+ * @return
+ * 1 - ready
+ * 0 - not ready
+ */
+static int nand_dev_ready(struct mtd_info *mtd)
+{
+ struct nand_chip *chip = mtd->priv;
+ int reg_val;
+ struct nand_drv *info;
+
+ info = (struct nand_drv *)chip->priv;
+
+ reg_val = readl(&info->reg->status);
+ if (reg_val & STATUS_RBSY0)
+ return 1;
+ else
+ return 0;
+}
+
+/* Dummy implementation: we don't support multiple chips */
+static void nand_select_chip(struct mtd_info *mtd, int chipnr)
+{
+ switch (chipnr) {
+ case -1:
+ case 0:
+ break;
+
+ default:
+ BUG();
+ }
+}
+
+/**
+ * Clear all interrupt status bits
+ *
+ * @param reg nand_ctlr structure
+ */
+static void nand_clear_interrupt_status(struct nand_ctlr *reg)
+{
+ u32 reg_val;
+
+ /* Clear interrupt status */
+ reg_val = readl(&reg->isr);
+ writel(reg_val, &reg->isr);
+}
+
+/**
+ * Send command to NAND device
+ *
+ * @param mtd MTD device structure
+ * @param command the command to be sent
+ * @param column the column address for this command, -1 if none
+ * @param page_addr the page address for this command, -1 if none
+ */
+static void nand_command(struct mtd_info *mtd, unsigned int command,
+ int column, int page_addr)
+{
+ struct nand_chip *chip = mtd->priv;
+ struct nand_drv *info;
+
+ info = (struct nand_drv *)chip->priv;
+
+ /*
+ * Write out the command to the device.
+ *
+ * Only command NAND_CMD_RESET or NAND_CMD_READID will come
+ * here before mtd->writesize is initialized.
+ */
+
+ /* Emulate NAND_CMD_READOOB */
+ if (command == NAND_CMD_READOOB) {
+ assert(mtd->writesize != 0);
+ column += mtd->writesize;
+ command = NAND_CMD_READ0;
+ }
+
+ /* Adjust columns for 16 bit bus-width */
+ if (column != -1 && (chip->options & NAND_BUSWIDTH_16))
+ column >>= 1;
+
+ nand_clear_interrupt_status(info->reg);
+
+ /* Stop DMA engine, clear DMA completion status */
+ writel(DMA_MST_CTRL_EN_A_DISABLE
+ | DMA_MST_CTRL_EN_B_DISABLE
+ | DMA_MST_CTRL_IS_DMA_DONE,
+ &info->reg->dma_mst_ctrl);
+
+ /*
+ * Program and erase have their own busy handlers
+ * status and sequential in needs no delay
+ */
+ switch (command) {
+ case NAND_CMD_READID:
+ writel(NAND_CMD_READID, &info->reg->cmd_reg1);
+ writel(CMD_GO | CMD_CLE | CMD_ALE | CMD_PIO
+ | CMD_RX |
+ ((4 - 1) << CMD_TRANS_SIZE_SHIFT)
+ | CMD_CE0,
+ &info->reg->command);
+ info->pio_byte_index = 0;
+ break;
+ case NAND_CMD_READ0:
+ writel(NAND_CMD_READ0, &info->reg->cmd_reg1);
+ writel(NAND_CMD_READSTART, &info->reg->cmd_reg2);
+ writel((page_addr << 16) | (column & 0xFFFF),
+ &info->reg->addr_reg1);
+ writel(page_addr >> 16, &info->reg->addr_reg2);
+ return;
+ case NAND_CMD_SEQIN:
+ writel(NAND_CMD_SEQIN, &info->reg->cmd_reg1);
+ writel(NAND_CMD_PAGEPROG, &info->reg->cmd_reg2);
+ writel((page_addr << 16) | (column & 0xFFFF),
+ &info->reg->addr_reg1);
+ writel(page_addr >> 16,
+ &info->reg->addr_reg2);
+ return;
+ case NAND_CMD_PAGEPROG:
+ return;
+ case NAND_CMD_ERASE1:
+ writel(NAND_CMD_ERASE1, &info->reg->cmd_reg1);
+ writel(NAND_CMD_ERASE2, &info->reg->cmd_reg2);
+ writel(page_addr, &info->reg->addr_reg1);
+ writel(CMD_GO | CMD_CLE | CMD_ALE |
+ CMD_SEC_CMD | CMD_CE0 | CMD_ALE_BYTES3,
+ &info->reg->command);
+ break;
+ case NAND_CMD_ERASE2:
+ return;
+ case NAND_CMD_STATUS:
+ writel(NAND_CMD_STATUS, &info->reg->cmd_reg1);
+ writel(CMD_GO | CMD_CLE | CMD_PIO | CMD_RX
+ | ((1 - 0) << CMD_TRANS_SIZE_SHIFT)
+ | CMD_CE0,
+ &info->reg->command);
+ info->pio_byte_index = 0;
+ break;
+ case NAND_CMD_RESET:
+ writel(NAND_CMD_RESET, &info->reg->cmd_reg1);
+ writel(CMD_GO | CMD_CLE | CMD_CE0,
+ &info->reg->command);
+ break;
+ case NAND_CMD_RNDOUT:
+ default:
+ printf("%s: Unsupported command %d\n", __func__, command);
+ return;
+ }
+ if (!nand_waitfor_cmd_completion(info->reg))
+ printf("Command 0x%02X timeout\n", command);
+}
+
+/**
+ * Check whether the pointed buffer are all 0xff (blank).
+ *
+ * @param buf data buffer for blank check
+ * @param len length of the buffer in byte
+ * @return
+ * 1 - blank
+ * 0 - non-blank
+ */
+static int blank_check(u8 *buf, int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ if (buf[i] != 0xFF)
+ return 0;
+ return 1;
+}
+
+/**
+ * After a DMA transfer for read, we call this function to see whether there
+ * is any uncorrectable error on the pointed data buffer or oob buffer.
+ *
+ * @param reg nand_ctlr structure
+ * @param databuf data buffer
+ * @param a_len data buffer length
+ * @param oobbuf oob buffer
+ * @param b_len oob buffer length
+ * @return
+ * ECC_OK - no ECC error or correctable ECC error
+ * ECC_TAG_ERROR - uncorrectable tag ECC error
+ * ECC_DATA_ERROR - uncorrectable data ECC error
+ * ECC_DATA_ERROR + ECC_TAG_ERROR - uncorrectable data+tag ECC error
+ */
+static int check_ecc_error(struct nand_ctlr *reg, u8 *databuf,
+ int a_len, u8 *oobbuf, int b_len)
+{
+ int return_val = ECC_OK;
+ u32 reg_val;
+
+ if (!(readl(&reg->isr) & ISR_IS_ECC_ERR))
+ return ECC_OK;
+
+ /*
+ * Area A is used for the data block (databuf). Area B is used for
+ * the spare block (oobbuf)
+ */
+ reg_val = readl(&reg->dec_status);
+ if ((reg_val & DEC_STATUS_A_ECC_FAIL) && databuf) {
+ reg_val = readl(&reg->bch_dec_status_buf);
+ /*
+ * If uncorrectable error occurs on data area, then see whether
+ * they are all FF. If all are FF, it's a blank page.
+ * Not error.
+ */
+ if ((reg_val & BCH_DEC_STATUS_FAIL_SEC_FLAG_MASK) &&
+ !blank_check(databuf, a_len))
+ return_val |= ECC_DATA_ERROR;
+ }
+
+ if ((reg_val & DEC_STATUS_B_ECC_FAIL) && oobbuf) {
+ reg_val = readl(&reg->bch_dec_status_buf);
+ /*
+ * If uncorrectable error occurs on tag area, then see whether
+ * they are all FF. If all are FF, it's a blank page.
+ * Not error.
+ */
+ if ((reg_val & BCH_DEC_STATUS_FAIL_TAG_MASK) &&
+ !blank_check(oobbuf, b_len))
+ return_val |= ECC_TAG_ERROR;
+ }
+
+ return return_val;
+}
+
+/**
+ * Set GO bit to send command to device
+ *
+ * @param reg nand_ctlr structure
+ */
+static void start_command(struct nand_ctlr *reg)
+{
+ u32 reg_val;
+
+ reg_val = readl(&reg->command);
+ reg_val |= CMD_GO;
+ writel(reg_val, &reg->command);
+}
+
+/**
+ * Clear command GO bit, DMA GO bit, and DMA completion status
+ *
+ * @param reg nand_ctlr structure
+ */
+static void stop_command(struct nand_ctlr *reg)
+{
+ /* Stop command */
+ writel(0, &reg->command);
+
+ /* Stop DMA engine and clear DMA completion status */
+ writel(DMA_MST_CTRL_GO_DISABLE
+ | DMA_MST_CTRL_IS_DMA_DONE,
+ &reg->dma_mst_ctrl);
+}
+
+/**
+ * Set up NAND bus width and page size
+ *
+ * @param info nand_info structure
+ * @param *reg_val address of reg_val
+ * @return 0 if ok, -1 on error
+ */
+static int set_bus_width_page_size(struct fdt_nand *config,
+ u32 *reg_val)
+{
+ if (config->width == 8)
+ *reg_val = CFG_BUS_WIDTH_8BIT;
+ else if (config->width == 16)
+ *reg_val = CFG_BUS_WIDTH_16BIT;
+ else {
+ debug("%s: Unsupported bus width %d\n", __func__,
+ config->width);
+ return -1;
+ }
+
+ if (our_mtd->writesize == 512)
+ *reg_val |= CFG_PAGE_SIZE_512;
+ else if (our_mtd->writesize == 2048)
+ *reg_val |= CFG_PAGE_SIZE_2048;
+ else if (our_mtd->writesize == 4096)
+ *reg_val |= CFG_PAGE_SIZE_4096;
+ else {
+ debug("%s: Unsupported page size %d\n", __func__,
+ our_mtd->writesize);
+ return -1;
+ }
+
+ return 0;
+}
+
+/**
+ * Page read/write function
+ *
+ * @param mtd mtd info structure
+ * @param chip nand chip info structure
+ * @param buf data buffer
+ * @param page page number
+ * @param with_ecc 1 to enable ECC, 0 to disable ECC
+ * @param is_writing 0 for read, 1 for write
+ * @return 0 when successfully completed
+ * -EIO when command timeout
+ */
+static int nand_rw_page(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *buf, int page, int with_ecc, int is_writing)
+{
+ u32 reg_val;
+ int tag_size;
+ struct nand_oobfree *free = chip->ecc.layout->oobfree;
+ /* 4*128=512 (byte) is the value that our HW can support. */
+ ALLOC_CACHE_ALIGN_BUFFER(u32, tag_buf, 128);
+ char *tag_ptr;
+ struct nand_drv *info;
+ struct fdt_nand *config;
+
+ if ((uintptr_t)buf & 0x03) {
+ printf("buf %p has to be 4-byte aligned\n", buf);
+ return -EINVAL;
+ }
+
+ info = (struct nand_drv *)chip->priv;
+ config = &info->config;
+ if (set_bus_width_page_size(config, &reg_val))
+ return -EINVAL;
+
+ /* Need to be 4-byte aligned */
+ tag_ptr = (char *)tag_buf;
+
+ stop_command(info->reg);
+
+ writel((1 << chip->page_shift) - 1, &info->reg->dma_cfg_a);
+ writel(virt_to_phys(buf), &info->reg->data_block_ptr);
+
+ if (with_ecc) {
+ writel(virt_to_phys(tag_ptr), &info->reg->tag_ptr);
+ if (is_writing)
+ memcpy(tag_ptr, chip->oob_poi + free->offset,
+ chip->ecc.layout->oobavail +
+ TAG_ECC_BYTES);
+ } else {
+ writel(virt_to_phys(chip->oob_poi), &info->reg->tag_ptr);
+ }
+
+ /* Set ECC selection, configure ECC settings */
+ if (with_ecc) {
+ tag_size = chip->ecc.layout->oobavail + TAG_ECC_BYTES;
+ reg_val |= (CFG_SKIP_SPARE_SEL_4
+ | CFG_SKIP_SPARE_ENABLE
+ | CFG_HW_ECC_CORRECTION_ENABLE
+ | CFG_ECC_EN_TAG_DISABLE
+ | CFG_HW_ECC_SEL_RS
+ | CFG_HW_ECC_ENABLE
+ | CFG_TVAL4
+ | (tag_size - 1));
+
+ if (!is_writing)
+ tag_size += SKIPPED_SPARE_BYTES;
+ dma_prepare(tag_ptr, tag_size, is_writing);
+ } else {
+ tag_size = mtd->oobsize;
+ reg_val |= (CFG_SKIP_SPARE_DISABLE
+ | CFG_HW_ECC_CORRECTION_DISABLE
+ | CFG_ECC_EN_TAG_DISABLE
+ | CFG_HW_ECC_DISABLE
+ | (tag_size - 1));
+ dma_prepare(chip->oob_poi, tag_size, is_writing);
+ }
+ writel(reg_val, &info->reg->config);
+
+ dma_prepare(buf, 1 << chip->page_shift, is_writing);
+
+ writel(BCH_CONFIG_BCH_ECC_DISABLE, &info->reg->bch_config);
+
+ writel(tag_size - 1, &info->reg->dma_cfg_b);
+
+ nand_clear_interrupt_status(info->reg);
+
+ reg_val = CMD_CLE | CMD_ALE
+ | CMD_SEC_CMD
+ | (CMD_ALE_BYTES5 << CMD_ALE_BYTE_SIZE_SHIFT)
+ | CMD_A_VALID
+ | CMD_B_VALID
+ | (CMD_TRANS_SIZE_PAGE << CMD_TRANS_SIZE_SHIFT)
+ | CMD_CE0;
+ if (!is_writing)
+ reg_val |= (CMD_AFT_DAT_DISABLE | CMD_RX);
+ else
+ reg_val |= (CMD_AFT_DAT_ENABLE | CMD_TX);
+ writel(reg_val, &info->reg->command);
+
+ /* Setup DMA engine */
+ reg_val = DMA_MST_CTRL_GO_ENABLE
+ | DMA_MST_CTRL_BURST_8WORDS
+ | DMA_MST_CTRL_EN_A_ENABLE
+ | DMA_MST_CTRL_EN_B_ENABLE;
+
+ if (!is_writing)
+ reg_val |= DMA_MST_CTRL_DIR_READ;
+ else
+ reg_val |= DMA_MST_CTRL_DIR_WRITE;
+
+ writel(reg_val, &info->reg->dma_mst_ctrl);
+
+ start_command(info->reg);
+
+ if (!nand_waitfor_cmd_completion(info->reg)) {
+ if (!is_writing)
+ printf("Read Page 0x%X timeout ", page);
+ else
+ printf("Write Page 0x%X timeout ", page);
+ if (with_ecc)
+ printf("with ECC");
+ else
+ printf("without ECC");
+ printf("\n");
+ return -EIO;
+ }
+
+ if (with_ecc && !is_writing) {
+ memcpy(chip->oob_poi, tag_ptr,
+ SKIPPED_SPARE_BYTES);
+ memcpy(chip->oob_poi + free->offset,
+ tag_ptr + SKIPPED_SPARE_BYTES,
+ chip->ecc.layout->oobavail);
+ reg_val = (u32)check_ecc_error(info->reg, (u8 *)buf,
+ 1 << chip->page_shift,
+ (u8 *)(tag_ptr + SKIPPED_SPARE_BYTES),
+ chip->ecc.layout->oobavail);
+ if (reg_val & ECC_TAG_ERROR)
+ printf("Read Page 0x%X tag ECC error\n", page);
+ if (reg_val & ECC_DATA_ERROR)
+ printf("Read Page 0x%X data ECC error\n",
+ page);
+ if (reg_val & (ECC_DATA_ERROR | ECC_TAG_ERROR))
+ return -EIO;
+ }
+ return 0;
+}
+
+/**
+ * Hardware ecc based page read function
+ *
+ * @param mtd mtd info structure
+ * @param chip nand chip info structure
+ * @param buf buffer to store read data
+ * @param page page number to read
+ * @return 0 when successfully completed
+ * -EIO when command timeout
+ */
+static int nand_read_page_hwecc(struct mtd_info *mtd,
+ struct nand_chip *chip, uint8_t *buf, int page)
+{
+ return nand_rw_page(mtd, chip, buf, page, 1, 0);
+}
+
+/**
+ * Hardware ecc based page write function
+ *
+ * @param mtd mtd info structure
+ * @param chip nand chip info structure
+ * @param buf data buffer
+ */
+static void nand_write_page_hwecc(struct mtd_info *mtd,
+ struct nand_chip *chip, const uint8_t *buf)
+{
+ int page;
+ struct nand_drv *info;
+
+ info = (struct nand_drv *)chip->priv;
+
+ page = (readl(&info->reg->addr_reg1) >> 16) |
+ (readl(&info->reg->addr_reg2) << 16);
+
+ nand_rw_page(mtd, chip, (uint8_t *)buf, page, 1, 1);
+}
+
+
+/**
+ * Read raw page data without ecc
+ *
+ * @param mtd mtd info structure
+ * @param chip nand chip info structure
+ * @param buf buffer to store read data
+ * @param page page number to read
+ * @return 0 when successfully completed
+ * -EINVAL when chip->oob_poi is not double-word aligned
+ * -EIO when command timeout
+ */
+static int nand_read_page_raw(struct mtd_info *mtd,
+ struct nand_chip *chip, uint8_t *buf, int page)
+{
+ return nand_rw_page(mtd, chip, buf, page, 0, 0);
+}
+
+/**
+ * Raw page write function
+ *
+ * @param mtd mtd info structure
+ * @param chip nand chip info structure
+ * @param buf data buffer
+ */
+static void nand_write_page_raw(struct mtd_info *mtd,
+ struct nand_chip *chip, const uint8_t *buf)
+{
+ int page;
+ struct nand_drv *info;
+
+ info = (struct nand_drv *)chip->priv;
+ page = (readl(&info->reg->addr_reg1) >> 16) |
+ (readl(&info->reg->addr_reg2) << 16);
+
+ nand_rw_page(mtd, chip, (uint8_t *)buf, page, 0, 1);
+}
+
+/**
+ * OOB data read/write function
+ *
+ * @param mtd mtd info structure
+ * @param chip nand chip info structure
+ * @param page page number to read
+ * @param with_ecc 1 to enable ECC, 0 to disable ECC
+ * @param is_writing 0 for read, 1 for write
+ * @return 0 when successfully completed
+ * -EINVAL when chip->oob_poi is not double-word aligned
+ * -EIO when command timeout
+ */
+static int nand_rw_oob(struct mtd_info *mtd, struct nand_chip *chip,
+ int page, int with_ecc, int is_writing)
+{
+ u32 reg_val;
+ int tag_size;
+ struct nand_oobfree *free = chip->ecc.layout->oobfree;
+ struct nand_drv *info;
+
+ if (((int)chip->oob_poi) & 0x03)
+ return -EINVAL;
+ info = (struct nand_drv *)chip->priv;
+ if (set_bus_width_page_size(&info->config, &reg_val))
+ return -EINVAL;
+
+ stop_command(info->reg);
+
+ writel(virt_to_phys(chip->oob_poi), &info->reg->tag_ptr);
+
+ /* Set ECC selection */
+ tag_size = mtd->oobsize;
+ if (with_ecc)
+ reg_val |= CFG_ECC_EN_TAG_ENABLE;
+ else
+ reg_val |= (CFG_ECC_EN_TAG_DISABLE);
+
+ reg_val |= ((tag_size - 1) |
+ CFG_SKIP_SPARE_DISABLE |
+ CFG_HW_ECC_CORRECTION_DISABLE |
+ CFG_HW_ECC_DISABLE);
+ writel(reg_val, &info->reg->config);
+
+ dma_prepare(chip->oob_poi, tag_size, is_writing);
+
+ writel(BCH_CONFIG_BCH_ECC_DISABLE, &info->reg->bch_config);
+
+ if (is_writing && with_ecc)
+ tag_size -= TAG_ECC_BYTES;
+
+ writel(tag_size - 1, &info->reg->dma_cfg_b);
+
+ nand_clear_interrupt_status(info->reg);
+
+ reg_val = CMD_CLE | CMD_ALE
+ | CMD_SEC_CMD
+ | (CMD_ALE_BYTES5 << CMD_ALE_BYTE_SIZE_SHIFT)
+ | CMD_B_VALID
+ | CMD_CE0;
+ if (!is_writing)
+ reg_val |= (CMD_AFT_DAT_DISABLE | CMD_RX);
+ else
+ reg_val |= (CMD_AFT_DAT_ENABLE | CMD_TX);
+ writel(reg_val, &info->reg->command);
+
+ /* Setup DMA engine */
+ reg_val = DMA_MST_CTRL_GO_ENABLE
+ | DMA_MST_CTRL_BURST_8WORDS
+ | DMA_MST_CTRL_EN_B_ENABLE;
+ if (!is_writing)
+ reg_val |= DMA_MST_CTRL_DIR_READ;
+ else
+ reg_val |= DMA_MST_CTRL_DIR_WRITE;
+
+ writel(reg_val, &info->reg->dma_mst_ctrl);
+
+ start_command(info->reg);
+
+ if (!nand_waitfor_cmd_completion(info->reg)) {
+ if (!is_writing)
+ printf("Read OOB of Page 0x%X timeout\n", page);
+ else
+ printf("Write OOB of Page 0x%X timeout\n", page);
+ return -EIO;
+ }
+
+ if (with_ecc && !is_writing) {
+ reg_val = (u32)check_ecc_error(info->reg, 0, 0,
+ (u8 *)(chip->oob_poi + free->offset),
+ chip->ecc.layout->oobavail);
+ if (reg_val & ECC_TAG_ERROR)
+ printf("Read OOB of Page 0x%X tag ECC error\n", page);
+ }
+ return 0;
+}
+
+/**
+ * OOB data read function
+ *
+ * @param mtd mtd info structure
+ * @param chip nand chip info structure
+ * @param page page number to read
+ * @param sndcmd flag whether to issue read command or not
+ * @return 1 - issue read command next time
+ * 0 - not to issue
+ */
+static int nand_read_oob(struct mtd_info *mtd, struct nand_chip *chip,
+ int page, int sndcmd)
+{
+ if (sndcmd) {
+ chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page);
+ sndcmd = 0;
+ }
+ nand_rw_oob(mtd, chip, page, 0, 0);
+ return sndcmd;
+}
+
+/**
+ * OOB data write function
+ *
+ * @param mtd mtd info structure
+ * @param chip nand chip info structure
+ * @param page page number to write
+ * @return 0 when successfully completed
+ * -EINVAL when chip->oob_poi is not double-word aligned
+ * -EIO when command timeout
+ */
+static int nand_write_oob(struct mtd_info *mtd, struct nand_chip *chip,
+ int page)
+{
+ chip->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize, page);
+
+ return nand_rw_oob(mtd, chip, page, 0, 1);
+}
+
+/**
+ * Set up NAND memory timings according to the provided parameters
+ *
+ * @param timing Timing parameters
+ * @param reg NAND controller register address
+ */
+static void setup_timing(unsigned timing[FDT_NAND_TIMING_COUNT],
+ struct nand_ctlr *reg)
+{
+ u32 reg_val, clk_rate, clk_period, time_val;
+
+ clk_rate = (u32)clock_get_periph_rate(PERIPH_ID_NDFLASH,
+ CLOCK_ID_PERIPH) / 1000000;
+ clk_period = 1000 / clk_rate;
+ reg_val = ((timing[FDT_NAND_MAX_TRP_TREA] / clk_period) <<
+ TIMING_TRP_RESP_CNT_SHIFT) & TIMING_TRP_RESP_CNT_MASK;
+ reg_val |= ((timing[FDT_NAND_TWB] / clk_period) <<
+ TIMING_TWB_CNT_SHIFT) & TIMING_TWB_CNT_MASK;
+ time_val = timing[FDT_NAND_MAX_TCR_TAR_TRR] / clk_period;
+ if (time_val > 2)
+ reg_val |= ((time_val - 2) << TIMING_TCR_TAR_TRR_CNT_SHIFT) &
+ TIMING_TCR_TAR_TRR_CNT_MASK;
+ reg_val |= ((timing[FDT_NAND_TWHR] / clk_period) <<
+ TIMING_TWHR_CNT_SHIFT) & TIMING_TWHR_CNT_MASK;
+ time_val = timing[FDT_NAND_MAX_TCS_TCH_TALS_TALH] / clk_period;
+ if (time_val > 1)
+ reg_val |= ((time_val - 1) << TIMING_TCS_CNT_SHIFT) &
+ TIMING_TCS_CNT_MASK;
+ reg_val |= ((timing[FDT_NAND_TWH] / clk_period) <<
+ TIMING_TWH_CNT_SHIFT) & TIMING_TWH_CNT_MASK;
+ reg_val |= ((timing[FDT_NAND_TWP] / clk_period) <<
+ TIMING_TWP_CNT_SHIFT) & TIMING_TWP_CNT_MASK;
+ reg_val |= ((timing[FDT_NAND_TRH] / clk_period) <<
+ TIMING_TRH_CNT_SHIFT) & TIMING_TRH_CNT_MASK;
+ reg_val |= ((timing[FDT_NAND_MAX_TRP_TREA] / clk_period) <<
+ TIMING_TRP_CNT_SHIFT) & TIMING_TRP_CNT_MASK;
+ writel(reg_val, &reg->timing);
+
+ reg_val = 0;
+ time_val = timing[FDT_NAND_TADL] / clk_period;
+ if (time_val > 2)
+ reg_val = (time_val - 2) & TIMING2_TADL_CNT_MASK;
+ writel(reg_val, &reg->timing2);
+}
+
+/**
+ * Decode NAND parameters from the device tree
+ *
+ * @param blob Device tree blob
+ * @param node Node containing "nand-flash" compatble node
+ * @return 0 if ok, -ve on error (FDT_ERR_...)
+ */
+static int fdt_decode_nand(const void *blob, int node, struct fdt_nand *config)
+{
+ int err;
+
+ config->reg = (struct nand_ctlr *)fdtdec_get_addr(blob, node, "reg");
+ config->enabled = fdtdec_get_is_enabled(blob, node);
+ config->width = fdtdec_get_int(blob, node, "nvidia,nand-width", 8);
+ err = fdtdec_decode_gpio(blob, node, "nvidia,wp-gpios",
+ &config->wp_gpio);
+ if (err)
+ return err;
+ err = fdtdec_get_int_array(blob, node, "nvidia,timing",
+ config->timing, FDT_NAND_TIMING_COUNT);
+ if (err < 0)
+ return err;
+
+ /* Now look up the controller and decode that */
+ node = fdt_next_node(blob, node, NULL);
+ if (node < 0)
+ return node;
+
+ return 0;
+}
+
+/**
+ * Board-specific NAND initialization
+ *
+ * @param nand nand chip info structure
+ * @return 0, after initialized, -1 on error
+ */
+int tegra_nand_init(struct nand_chip *nand, int devnum)
+{
+ struct nand_drv *info = &nand_ctrl;
+ struct fdt_nand *config = &info->config;
+ int node, ret;
+
+ node = fdtdec_next_compatible(gd->fdt_blob, 0,
+ COMPAT_NVIDIA_TEGRA20_NAND);
+ if (node < 0)
+ return -1;
+ if (fdt_decode_nand(gd->fdt_blob, node, config)) {
+ printf("Could not decode nand-flash in device tree\n");
+ return -1;
+ }
+ if (!config->enabled)
+ return -1;
+ info->reg = config->reg;
+ nand->ecc.mode = NAND_ECC_HW;
+ nand->ecc.layout = &eccoob;
+
+ nand->options = LP_OPTIONS;
+ nand->cmdfunc = nand_command;
+ nand->read_byte = read_byte;
+ nand->ecc.read_page = nand_read_page_hwecc;
+ nand->ecc.write_page = nand_write_page_hwecc;
+ nand->ecc.read_page_raw = nand_read_page_raw;
+ nand->ecc.write_page_raw = nand_write_page_raw;
+ nand->ecc.read_oob = nand_read_oob;
+ nand->ecc.write_oob = nand_write_oob;
+ nand->select_chip = nand_select_chip;
+ nand->dev_ready = nand_dev_ready;
+ nand->priv = &nand_ctrl;
+
+ /* Adjust controller clock rate */
+ clock_start_periph_pll(PERIPH_ID_NDFLASH, CLOCK_ID_PERIPH, 52000000);
+
+ /* Adjust timing for NAND device */
+ setup_timing(config->timing, info->reg);
+
+ funcmux_select(PERIPH_ID_NDFLASH, FUNCMUX_DEFAULT);
+ fdtdec_setup_gpio(&config->wp_gpio);
+ gpio_direction_output(config->wp_gpio.gpio, 1);
+
+ our_mtd = &nand_info[devnum];
+ our_mtd->priv = nand;
+ ret = nand_scan_ident(our_mtd, CONFIG_SYS_NAND_MAX_CHIPS, NULL);
+ if (ret)
+ return ret;
+
+ nand->ecc.size = our_mtd->writesize;
+ nand->ecc.bytes = our_mtd->oobsize;
+
+ ret = nand_scan_tail(our_mtd);
+ if (ret)
+ return ret;
+
+ ret = nand_register(devnum);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+void board_nand_init(void)
+{
+ struct nand_chip *nand = &nand_chip[0];
+
+ if (tegra_nand_init(nand, 0))
+ puts("Tegra NAND init failed\n");
+}
diff --git a/drivers/mtd/nand/tegra_nand.h b/drivers/mtd/nand/tegra_nand.h
new file mode 100644
index 0000000..7e74be7
--- /dev/null
+++ b/drivers/mtd/nand/tegra_nand.h
@@ -0,0 +1,257 @@
+/*
+ * (C) Copyright 2011 NVIDIA Corporation <www.nvidia.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* register offset */
+#define COMMAND_0 0x00
+#define CMD_GO (1 << 31)
+#define CMD_CLE (1 << 30)
+#define CMD_ALE (1 << 29)
+#define CMD_PIO (1 << 28)
+#define CMD_TX (1 << 27)
+#define CMD_RX (1 << 26)
+#define CMD_SEC_CMD (1 << 25)
+#define CMD_AFT_DAT_MASK (1 << 24)
+#define CMD_AFT_DAT_DISABLE 0
+#define CMD_AFT_DAT_ENABLE (1 << 24)
+#define CMD_TRANS_SIZE_SHIFT 20
+#define CMD_TRANS_SIZE_PAGE 8
+#define CMD_A_VALID (1 << 19)
+#define CMD_B_VALID (1 << 18)
+#define CMD_RD_STATUS_CHK (1 << 17)
+#define CMD_R_BSY_CHK (1 << 16)
+#define CMD_CE7 (1 << 15)
+#define CMD_CE6 (1 << 14)
+#define CMD_CE5 (1 << 13)
+#define CMD_CE4 (1 << 12)
+#define CMD_CE3 (1 << 11)
+#define CMD_CE2 (1 << 10)
+#define CMD_CE1 (1 << 9)
+#define CMD_CE0 (1 << 8)
+#define CMD_CLE_BYTE_SIZE_SHIFT 4
+enum {
+ CMD_CLE_BYTES1 = 0,
+ CMD_CLE_BYTES2,
+ CMD_CLE_BYTES3,
+ CMD_CLE_BYTES4,
+};
+#define CMD_ALE_BYTE_SIZE_SHIFT 0
+enum {
+ CMD_ALE_BYTES1 = 0,
+ CMD_ALE_BYTES2,
+ CMD_ALE_BYTES3,
+ CMD_ALE_BYTES4,
+ CMD_ALE_BYTES5,
+ CMD_ALE_BYTES6,
+ CMD_ALE_BYTES7,
+ CMD_ALE_BYTES8
+};
+
+#define STATUS_0 0x04
+#define STATUS_RBSY0 (1 << 8)
+
+#define ISR_0 0x08
+#define ISR_IS_CMD_DONE (1 << 5)
+#define ISR_IS_ECC_ERR (1 << 4)
+
+#define IER_0 0x0C
+
+#define CFG_0 0x10
+#define CFG_HW_ECC_MASK (1 << 31)
+#define CFG_HW_ECC_DISABLE 0
+#define CFG_HW_ECC_ENABLE (1 << 31)
+#define CFG_HW_ECC_SEL_MASK (1 << 30)
+#define CFG_HW_ECC_SEL_HAMMING 0
+#define CFG_HW_ECC_SEL_RS (1 << 30)
+#define CFG_HW_ECC_CORRECTION_MASK (1 << 29)
+#define CFG_HW_ECC_CORRECTION_DISABLE 0
+#define CFG_HW_ECC_CORRECTION_ENABLE (1 << 29)
+#define CFG_PIPELINE_EN_MASK (1 << 28)
+#define CFG_PIPELINE_EN_DISABLE 0
+#define CFG_PIPELINE_EN_ENABLE (1 << 28)
+#define CFG_ECC_EN_TAG_MASK (1 << 27)
+#define CFG_ECC_EN_TAG_DISABLE 0
+#define CFG_ECC_EN_TAG_ENABLE (1 << 27)
+#define CFG_TVALUE_MASK (3 << 24)
+enum {
+ CFG_TVAL4 = 0 << 24,
+ CFG_TVAL6 = 1 << 24,
+ CFG_TVAL8 = 2 << 24
+};
+#define CFG_SKIP_SPARE_MASK (1 << 23)
+#define CFG_SKIP_SPARE_DISABLE 0
+#define CFG_SKIP_SPARE_ENABLE (1 << 23)
+#define CFG_COM_BSY_MASK (1 << 22)
+#define CFG_COM_BSY_DISABLE 0
+#define CFG_COM_BSY_ENABLE (1 << 22)
+#define CFG_BUS_WIDTH_MASK (1 << 21)
+#define CFG_BUS_WIDTH_8BIT 0
+#define CFG_BUS_WIDTH_16BIT (1 << 21)
+#define CFG_LPDDR1_MODE_MASK (1 << 20)
+#define CFG_LPDDR1_MODE_DISABLE 0
+#define CFG_LPDDR1_MODE_ENABLE (1 << 20)
+#define CFG_EDO_MODE_MASK (1 << 19)
+#define CFG_EDO_MODE_DISABLE 0
+#define CFG_EDO_MODE_ENABLE (1 << 19)
+#define CFG_PAGE_SIZE_SEL_MASK (7 << 16)
+enum {
+ CFG_PAGE_SIZE_256 = 0 << 16,
+ CFG_PAGE_SIZE_512 = 1 << 16,
+ CFG_PAGE_SIZE_1024 = 2 << 16,
+ CFG_PAGE_SIZE_2048 = 3 << 16,
+ CFG_PAGE_SIZE_4096 = 4 << 16
+};
+#define CFG_SKIP_SPARE_SEL_MASK (3 << 14)
+enum {
+ CFG_SKIP_SPARE_SEL_4 = 0 << 14,
+ CFG_SKIP_SPARE_SEL_8 = 1 << 14,
+ CFG_SKIP_SPARE_SEL_12 = 2 << 14,
+ CFG_SKIP_SPARE_SEL_16 = 3 << 14
+};
+#define CFG_TAG_BYTE_SIZE_MASK 0x1FF
+
+#define TIMING_0 0x14
+#define TIMING_TRP_RESP_CNT_SHIFT 28
+#define TIMING_TRP_RESP_CNT_MASK (0xf << TIMING_TRP_RESP_CNT_SHIFT)
+#define TIMING_TWB_CNT_SHIFT 24
+#define TIMING_TWB_CNT_MASK (0xf << TIMING_TWB_CNT_SHIFT)
+#define TIMING_TCR_TAR_TRR_CNT_SHIFT 20
+#define TIMING_TCR_TAR_TRR_CNT_MASK (0xf << TIMING_TCR_TAR_TRR_CNT_SHIFT)
+#define TIMING_TWHR_CNT_SHIFT 16
+#define TIMING_TWHR_CNT_MASK (0xf << TIMING_TWHR_CNT_SHIFT)
+#define TIMING_TCS_CNT_SHIFT 14
+#define TIMING_TCS_CNT_MASK (3 << TIMING_TCS_CNT_SHIFT)
+#define TIMING_TWH_CNT_SHIFT 12
+#define TIMING_TWH_CNT_MASK (3 << TIMING_TWH_CNT_SHIFT)
+#define TIMING_TWP_CNT_SHIFT 8
+#define TIMING_TWP_CNT_MASK (0xf << TIMING_TWP_CNT_SHIFT)
+#define TIMING_TRH_CNT_SHIFT 4
+#define TIMING_TRH_CNT_MASK (3 << TIMING_TRH_CNT_SHIFT)
+#define TIMING_TRP_CNT_SHIFT 0
+#define TIMING_TRP_CNT_MASK (0xf << TIMING_TRP_CNT_SHIFT)
+
+#define RESP_0 0x18
+
+#define TIMING2_0 0x1C
+#define TIMING2_TADL_CNT_SHIFT 0
+#define TIMING2_TADL_CNT_MASK (0xf << TIMING2_TADL_CNT_SHIFT)
+
+#define CMD_REG1_0 0x20
+#define CMD_REG2_0 0x24
+#define ADDR_REG1_0 0x28
+#define ADDR_REG2_0 0x2C
+
+#define DMA_MST_CTRL_0 0x30
+#define DMA_MST_CTRL_GO_MASK (1 << 31)
+#define DMA_MST_CTRL_GO_DISABLE 0
+#define DMA_MST_CTRL_GO_ENABLE (1 << 31)
+#define DMA_MST_CTRL_DIR_MASK (1 << 30)
+#define DMA_MST_CTRL_DIR_READ 0
+#define DMA_MST_CTRL_DIR_WRITE (1 << 30)
+#define DMA_MST_CTRL_PERF_EN_MASK (1 << 29)
+#define DMA_MST_CTRL_PERF_EN_DISABLE 0
+#define DMA_MST_CTRL_PERF_EN_ENABLE (1 << 29)
+#define DMA_MST_CTRL_REUSE_BUFFER_MASK (1 << 27)
+#define DMA_MST_CTRL_REUSE_BUFFER_DISABLE 0
+#define DMA_MST_CTRL_REUSE_BUFFER_ENABLE (1 << 27)
+#define DMA_MST_CTRL_BURST_SIZE_SHIFT 24
+#define DMA_MST_CTRL_BURST_SIZE_MASK (7 << DMA_MST_CTRL_BURST_SIZE_SHIFT)
+enum {
+ DMA_MST_CTRL_BURST_1WORDS = 2 << DMA_MST_CTRL_BURST_SIZE_SHIFT,
+ DMA_MST_CTRL_BURST_4WORDS = 3 << DMA_MST_CTRL_BURST_SIZE_SHIFT,
+ DMA_MST_CTRL_BURST_8WORDS = 4 << DMA_MST_CTRL_BURST_SIZE_SHIFT,
+ DMA_MST_CTRL_BURST_16WORDS = 5 << DMA_MST_CTRL_BURST_SIZE_SHIFT
+};
+#define DMA_MST_CTRL_IS_DMA_DONE (1 << 20)
+#define DMA_MST_CTRL_EN_A_MASK (1 << 2)
+#define DMA_MST_CTRL_EN_A_DISABLE 0
+#define DMA_MST_CTRL_EN_A_ENABLE (1 << 2)
+#define DMA_MST_CTRL_EN_B_MASK (1 << 1)
+#define DMA_MST_CTRL_EN_B_DISABLE 0
+#define DMA_MST_CTRL_EN_B_ENABLE (1 << 1)
+
+#define DMA_CFG_A_0 0x34
+#define DMA_CFG_B_0 0x38
+#define FIFO_CTRL_0 0x3C
+#define DATA_BLOCK_PTR_0 0x40
+#define TAG_PTR_0 0x44
+#define ECC_PTR_0 0x48
+
+#define DEC_STATUS_0 0x4C
+#define DEC_STATUS_A_ECC_FAIL (1 << 1)
+#define DEC_STATUS_B_ECC_FAIL (1 << 0)
+
+#define BCH_CONFIG_0 0xCC
+#define BCH_CONFIG_BCH_TVALUE_SHIFT 4
+#define BCH_CONFIG_BCH_TVALUE_MASK (3 << BCH_CONFIG_BCH_TVALUE_SHIFT)
+enum {
+ BCH_CONFIG_BCH_TVAL4 = 0 << BCH_CONFIG_BCH_TVALUE_SHIFT,
+ BCH_CONFIG_BCH_TVAL8 = 1 << BCH_CONFIG_BCH_TVALUE_SHIFT,
+ BCH_CONFIG_BCH_TVAL14 = 2 << BCH_CONFIG_BCH_TVALUE_SHIFT,
+ BCH_CONFIG_BCH_TVAL16 = 3 << BCH_CONFIG_BCH_TVALUE_SHIFT
+};
+#define BCH_CONFIG_BCH_ECC_MASK (1 << 0)
+#define BCH_CONFIG_BCH_ECC_DISABLE 0
+#define BCH_CONFIG_BCH_ECC_ENABLE (1 << 0)
+
+#define BCH_DEC_RESULT_0 0xD0
+#define BCH_DEC_RESULT_CORRFAIL_ERR_MASK (1 << 8)
+#define BCH_DEC_RESULT_PAGE_COUNT_MASK 0xFF
+
+#define BCH_DEC_STATUS_BUF_0 0xD4
+#define BCH_DEC_STATUS_FAIL_SEC_FLAG_MASK 0xFF000000
+#define BCH_DEC_STATUS_CORR_SEC_FLAG_MASK 0x00FF0000
+#define BCH_DEC_STATUS_FAIL_TAG_MASK (1 << 14)
+#define BCH_DEC_STATUS_CORR_TAG_MASK (1 << 13)
+#define BCH_DEC_STATUS_MAX_CORR_CNT_MASK (0x1f << 8)
+#define BCH_DEC_STATUS_PAGE_NUMBER_MASK 0xFF
+
+#define LP_OPTIONS (NAND_NO_READRDY | NAND_NO_AUTOINCR)
+
+struct nand_ctlr {
+ u32 command; /* offset 00h */
+ u32 status; /* offset 04h */
+ u32 isr; /* offset 08h */
+ u32 ier; /* offset 0Ch */
+ u32 config; /* offset 10h */
+ u32 timing; /* offset 14h */
+ u32 resp; /* offset 18h */
+ u32 timing2; /* offset 1Ch */
+ u32 cmd_reg1; /* offset 20h */
+ u32 cmd_reg2; /* offset 24h */
+ u32 addr_reg1; /* offset 28h */
+ u32 addr_reg2; /* offset 2Ch */
+ u32 dma_mst_ctrl; /* offset 30h */
+ u32 dma_cfg_a; /* offset 34h */
+ u32 dma_cfg_b; /* offset 38h */
+ u32 fifo_ctrl; /* offset 3Ch */
+ u32 data_block_ptr; /* offset 40h */
+ u32 tag_ptr; /* offset 44h */
+ u32 resv1; /* offset 48h */
+ u32 dec_status; /* offset 4Ch */
+ u32 hwstatus_cmd; /* offset 50h */
+ u32 hwstatus_mask; /* offset 54h */
+ u32 resv2[29];
+ u32 bch_config; /* offset CCh */
+ u32 bch_dec_result; /* offset D0h */
+ u32 bch_dec_status_buf;
+ /* offset D4h */
+};
diff --git a/drivers/spi/mxs_spi.c b/drivers/spi/mxs_spi.c
index 168dbe4..42e4c99 100644
--- a/drivers/spi/mxs_spi.c
+++ b/drivers/spi/mxs_spi.c
@@ -224,8 +224,10 @@ static int mxs_spi_xfer_dma(struct mxs_spi_slave *slave,
struct mxs_dma_desc *dp;
uint32_t ctrl0;
uint32_t cache_data_count;
+ const uint32_t dstart = (uint32_t)data;
int dmach;
int tl;
+ int ret = 0;
ALLOC_CACHE_ALIGN_BUFFER(struct mxs_dma_desc, desc, desc_count);
@@ -239,17 +241,17 @@ static int mxs_spi_xfer_dma(struct mxs_spi_slave *slave,
if (!write)
ctrl0 |= SSP_CTRL0_READ;
- writel(length, &ssp_regs->hw_ssp_xfer_size);
-
if (length % ARCH_DMA_MINALIGN)
cache_data_count = roundup(length, ARCH_DMA_MINALIGN);
else
cache_data_count = length;
+ /* Flush data to DRAM so DMA can pick them up */
if (write)
- /* Flush data to DRAM so DMA can pick them up */
- flush_dcache_range((uint32_t)data,
- (uint32_t)(data + cache_data_count));
+ flush_dcache_range(dstart, dstart + cache_data_count);
+
+ /* Invalidate the area, so no writeback into the RAM races with DMA */
+ invalidate_dcache_range(dstart, dstart + cache_data_count);
dmach = MXS_DMA_CHANNEL_AHB_APBH_SSP0 + slave->slave.bus;
@@ -281,41 +283,47 @@ static int mxs_spi_xfer_dma(struct mxs_spi_slave *slave,
tl = min(length, xfer_max_sz);
dp->cmd.data |=
- (tl << MXS_DMA_DESC_BYTES_OFFSET) |
- (1 << MXS_DMA_DESC_PIO_WORDS_OFFSET) |
+ ((tl & 0xffff) << MXS_DMA_DESC_BYTES_OFFSET) |
+ (4 << MXS_DMA_DESC_PIO_WORDS_OFFSET) |
MXS_DMA_DESC_HALT_ON_TERMINATE |
MXS_DMA_DESC_TERMINATE_FLUSH;
- dp->cmd.pio_words[0] = ctrl0;
data += tl;
length -= tl;
+ if (!length) {
+ dp->cmd.data |= MXS_DMA_DESC_IRQ | MXS_DMA_DESC_DEC_SEM;
+
+ if (flags & SPI_XFER_END) {
+ ctrl0 &= ~SSP_CTRL0_LOCK_CS;
+ ctrl0 |= SSP_CTRL0_IGNORE_CRC;
+ }
+ }
+
+ /*
+ * Write CTRL0, CMD0, CMD1, XFER_SIZE registers. It is
+ * essential that the XFER_SIZE register is written on
+ * a per-descriptor basis with the same size as is the
+ * descriptor!
+ */
+ dp->cmd.pio_words[0] = ctrl0;
+ dp->cmd.pio_words[1] = 0;
+ dp->cmd.pio_words[2] = 0;
+ dp->cmd.pio_words[3] = tl;
+
mxs_dma_desc_append(dmach, dp);
dp++;
}
- dp->address = (dma_addr_t)dp;
- dp->cmd.address = (dma_addr_t)0;
- dp->cmd.data = MXS_DMA_DESC_COMMAND_NO_DMAXFER |
- (1 << MXS_DMA_DESC_PIO_WORDS_OFFSET) |
- MXS_DMA_DESC_IRQ | MXS_DMA_DESC_DEC_SEM;
- if (flags & SPI_XFER_END) {
- ctrl0 &= ~SSP_CTRL0_LOCK_CS;
- dp->cmd.pio_words[0] = ctrl0 | SSP_CTRL0_IGNORE_CRC;
- }
- mxs_dma_desc_append(dmach, dp);
-
if (mxs_dma_go(dmach))
- return -EINVAL;
+ ret = -EINVAL;
/* The data arrived into DRAM, invalidate cache over them */
- if (!write) {
- invalidate_dcache_range((uint32_t)data,
- (uint32_t)(data + cache_data_count));
- }
+ if (!write)
+ invalidate_dcache_range(dstart, dstart + cache_data_count);
- return 0;
+ return ret;
}
int spi_xfer(struct spi_slave *slave, unsigned int bitlen,
diff --git a/drivers/spi/tegra_spi.c b/drivers/spi/tegra_spi.c
index 2355e02..18b00b2 100644
--- a/drivers/spi/tegra_spi.c
+++ b/drivers/spi/tegra_spi.c
@@ -72,9 +72,9 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
return NULL;
}
- if (max_hz > TEGRA20_SPI_MAX_FREQ) {
+ if (max_hz > TEGRA_SPI_MAX_FREQ) {
printf("SPI error: unsupported frequency %d Hz. Max frequency"
- " is %d Hz\n", max_hz, TEGRA20_SPI_MAX_FREQ);
+ " is %d Hz\n", max_hz, TEGRA_SPI_MAX_FREQ);
return NULL;
}
@@ -86,7 +86,7 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
spi->slave.bus = bus;
spi->slave.cs = cs;
spi->freq = max_hz;
- spi->regs = (struct spi_tegra *)TEGRA20_SPI_BASE;
+ spi->regs = (struct spi_tegra *)NV_PA_SPI_BASE;
spi->mode = mode;
return &spi->slave;
generated by cgit v1.1 at 2024-12-29 08:26:23 +0000