am33xx: NAND support

TI AM33XX has the same GPMC controller as OMAP3 so we could just use the
existing omap_gpmc driver. This patch adds adds required
definitions/intialization.

Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>

5 files changed, 262 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-am33xx/cpu.h b/arch/arm/include/asm/arch-am33xx/cpu.h
index 819fd2f026..b91441fd63 100644
--- a/arch/arm/include/asm/arch-am33xx/cpu.h
+++ b/arch/arm/include/asm/arch-am33xx/cpu.h
@@ -60,6 +60,59 @@
 
 #ifndef __KERNEL_STRICT_NAMES
 #ifndef __ASSEMBLY__
+struct gpmc_cs {
+	u32 config1;		/* 0x00 */
+	u32 config2;		/* 0x04 */
+	u32 config3;		/* 0x08 */
+	u32 config4;		/* 0x0C */
+	u32 config5;		/* 0x10 */
+	u32 config6;		/* 0x14 */
+	u32 config7;		/* 0x18 */
+	u32 nand_cmd;		/* 0x1C */
+	u32 nand_adr;		/* 0x20 */
+	u32 nand_dat;		/* 0x24 */
+	u8 res[8];		/* blow up to 0x30 byte */
+};
+
+struct bch_res_0_3 {
+	u32 bch_result_x[4];
+};
+
+struct gpmc {
+	u8 res1[0x10];
+	u32 sysconfig;		/* 0x10 */
+	u8 res2[0x4];
+	u32 irqstatus;		/* 0x18 */
+	u32 irqenable;		/* 0x1C */
+	u8 res3[0x20];
+	u32 timeout_control;	/* 0x40 */
+	u8 res4[0xC];
+	u32 config;		/* 0x50 */
+	u32 status;		/* 0x54 */
+	u8 res5[0x8];		/* 0x58 */
+	struct gpmc_cs cs[8];	/* 0x60, 0x90, .. */
+	u8 res6[0x14];		/* 0x1E0 */
+	u32 ecc_config;		/* 0x1F4 */
+	u32 ecc_control;	/* 0x1F8 */
+	u32 ecc_size_config;	/* 0x1FC */
+	u32 ecc1_result;	/* 0x200 */
+	u32 ecc2_result;	/* 0x204 */
+	u32 ecc3_result;	/* 0x208 */
+	u32 ecc4_result;	/* 0x20C */
+	u32 ecc5_result;	/* 0x210 */
+	u32 ecc6_result;	/* 0x214 */
+	u32 ecc7_result;	/* 0x218 */
+	u32 ecc8_result;	/* 0x21C */
+	u32 ecc9_result;	/* 0x220 */
+	u8 res7[12];		/* 0x224 */
+	u32 testmomde_ctrl;	/* 0x230 */
+	u8 res8[12];		/* 0x234 */
+	struct bch_res_0_3 bch_result_0_3[2];	/* 0x240 */
+};
+
+/* Used for board specific gpmc initialization */
+extern struct gpmc *gpmc_cfg;
+
 /* Encapsulating core pll registers */
 struct cm_wkuppll {
 	unsigned int wkclkstctrl;	/* offset 0x00 */
diff --git a/arch/arm/include/asm/arch-am33xx/hardware.h b/arch/arm/include/asm/arch-am33xx/hardware.h
index 5bd4bc8722..b3922d9b47 100644
--- a/arch/arm/include/asm/arch-am33xx/hardware.h
+++ b/arch/arm/include/asm/arch-am33xx/hardware.h
@@ -80,6 +80,9 @@
 #define DDRPHY_0_CONFIG_BASE		(CTRL_BASE + 0x1400)
 #define DDRPHY_CONFIG_BASE		DDRPHY_0_CONFIG_BASE
 
+/* GPMC Base address */
+#define GPMC_BASE			0x50000000
+
 /* CPSW Config space */
 #define AM335X_CPSW_BASE		0x4A100000
 #define AM335X_CPSW_MDIO_BASE		0x4A101000
diff --git a/arch/arm/include/asm/arch-am33xx/mem.h b/arch/arm/include/asm/arch-am33xx/mem.h
new file mode 100644
index 0000000000..c3bf74e629
--- /dev/null
+++ b/arch/arm/include/asm/arch-am33xx/mem.h
@@ -0,0 +1,83 @@
+/*
+ * (C) Copyright 2006-2008
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author
+ *		Mansoor Ahamed <mansoor.ahamed@ti.com>
+ *
+ * Initial Code from:
+ *		Richard Woodruff <r-woodruff2@ti.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
+ */
+
+#ifndef _MEM_H_
+#define _MEM_H_
+
+/*
+ * GPMC settings -
+ * Definitions is as per the following format
+ * #define <PART>_GPMC_CONFIG<x> <value>
+ * Where:
+ * PART is the part name e.g. STNOR - Intel Strata Flash
+ * x is GPMC config registers from 1 to 6 (there will be 6 macros)
+ * Value is corresponding value
+ *
+ * For every valid PRCM configuration there should be only one definition of
+ * the same. if values are independent of the board, this definition will be
+ * present in this file if values are dependent on the board, then this should
+ * go into corresponding mem-boardName.h file
+ *
+ * Currently valid part Names are (PART):
+ * M_NAND - Micron NAND
+ */
+#define GPMC_SIZE_256M		0x0
+#define GPMC_SIZE_128M		0x8
+#define GPMC_SIZE_64M		0xC
+#define GPMC_SIZE_32M		0xE
+#define GPMC_SIZE_16M		0xF
+
+#define M_NAND_GPMC_CONFIG1	0x00000800
+#define M_NAND_GPMC_CONFIG2	0x001e1e00
+#define M_NAND_GPMC_CONFIG3	0x001e1e00
+#define M_NAND_GPMC_CONFIG4	0x16051807
+#define M_NAND_GPMC_CONFIG5	0x00151e1e
+#define M_NAND_GPMC_CONFIG6	0x16000f80
+#define M_NAND_GPMC_CONFIG7	0x00000008
+
+/* max number of GPMC Chip Selects */
+#define GPMC_MAX_CS		8
+/* max number of GPMC regs */
+#define GPMC_MAX_REG		7
+
+#define PISMO1_NOR		1
+#define PISMO1_NAND		2
+#define PISMO2_CS0		3
+#define PISMO2_CS1		4
+#define PISMO1_ONENAND		5
+#define DBG_MPDB		6
+#define PISMO2_NAND_CS0		7
+#define PISMO2_NAND_CS1		8
+
+/* make it readable for the gpmc_init */
+#define PISMO1_NOR_BASE	FLASH_BASE
+#define PISMO1_NAND_BASE	CONFIG_SYS_NAND_BASE
+#define PISMO1_NAND_SIZE	GPMC_SIZE_256M
+
+#endif /* endif _MEM_H_ */
diff --git a/arch/arm/include/asm/arch-am33xx/omap_gpmc.h b/arch/arm/include/asm/arch-am33xx/omap_gpmc.h
new file mode 100644
index 0000000000..572f9d0b27
--- /dev/null
+++ b/arch/arm/include/asm/arch-am33xx/omap_gpmc.h
@@ -0,0 +1,120 @@
+/*
+ * (C) Copyright 2004-2008 Texas Instruments, <www.ti.com>
+ * Rohit Choraria <rohitkc@ti.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
+ */
+#ifndef __ASM_ARCH_OMAP_GPMC_H
+#define __ASM_ARCH_OMAP_GPMC_H
+
+#define GPMC_BUF_EMPTY	0
+#define GPMC_BUF_FULL	1
+
+#define ECCCLEAR	(0x1 << 8)
+#define ECCRESULTREG1	(0x1 << 0)
+#define ECCSIZE512BYTE	0xFF
+#define ECCSIZE1	(ECCSIZE512BYTE << 22)
+#define ECCSIZE0	(ECCSIZE512BYTE << 12)
+#define ECCSIZE0SEL	(0x000 << 0)
+
+/* Generic ECC Layouts */
+/* Large Page x8 NAND device Layout */
+#ifdef GPMC_NAND_ECC_LP_x8_LAYOUT
+#define GPMC_NAND_HW_ECC_LAYOUT {\
+	.eccbytes = 12,\
+	.eccpos = {1, 2, 3, 4, 5, 6, 7, 8,\
+		9, 10, 11, 12},\
+	.oobfree = {\
+		{.offset = 13,\
+		 .length = 51 } } \
+}
+#endif
+
+/* Large Page x16 NAND device Layout */
+#ifdef GPMC_NAND_ECC_LP_x16_LAYOUT
+#define GPMC_NAND_HW_ECC_LAYOUT {\
+	.eccbytes = 12,\
+	.eccpos = {2, 3, 4, 5, 6, 7, 8, 9,\
+		10, 11, 12, 13},\
+	.oobfree = {\
+		{.offset = 14,\
+		 .length = 50 } } \
+}
+#endif
+
+/* Small Page x8 NAND device Layout */
+#ifdef GPMC_NAND_ECC_SP_x8_LAYOUT
+#define GPMC_NAND_HW_ECC_LAYOUT {\
+	.eccbytes = 3,\
+	.eccpos = {1, 2, 3},\
+	.oobfree = {\
+		{.offset = 4,\
+		 .length = 12 } } \
+}
+#endif
+
+/* Small Page x16 NAND device Layout */
+#ifdef GPMC_NAND_ECC_SP_x16_LAYOUT
+#define GPMC_NAND_HW_ECC_LAYOUT {\
+	.eccbytes = 3,\
+	.eccpos = {2, 3, 4},\
+	.oobfree = {\
+		{.offset = 5,\
+		 .length = 11 } } \
+}
+#endif
+
+#define GPMC_NAND_HW_BCH4_ECC_LAYOUT {\
+	.eccbytes = 32,\
+	.eccpos = {2, 3, 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},\
+	.oobfree = {\
+		{.offset = 34,\
+		 .length = 30 } } \
+}
+
+#define GPMC_NAND_HW_BCH8_ECC_LAYOUT {\
+	.eccbytes = 56,\
+	.eccpos = {2, 3, 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,\
+				40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,\
+				52, 53, 54, 55, 56, 57},\
+	.oobfree = {\
+		{.offset = 58,\
+		 .length = 6 } } \
+}
+
+#define GPMC_NAND_HW_BCH16_ECC_LAYOUT {\
+	.eccbytes = 104,\
+	.eccpos = {2, 3, 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,\
+				40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,\
+				52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,\
+				64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75,\
+				76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87,\
+				88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99,\
+				100, 101, 102, 103, 104, 105},\
+	.oobfree = {\
+		{.offset = 106,\
+		 .length = 8 } } \
+}
+#endif /* __ASM_ARCH_OMAP_GPMC_H */
diff --git a/arch/arm/include/asm/arch-am33xx/sys_proto.h b/arch/arm/include/asm/arch-am33xx/sys_proto.h
index 9cf35e0257..588d8de82f 100644
--- a/arch/arm/include/asm/arch-am33xx/sys_proto.h
+++ b/arch/arm/include/asm/arch-am33xx/sys_proto.h
@@ -33,4 +33,7 @@ u32 get_device_type(void);
 void setup_clocks_for_console(void);
 void ddr_pll_config(unsigned int ddrpll_M);
 
+void sdelay(unsigned long);
+void gpmc_init(void);
+void omap_nand_switch_ecc(int);
 #endif