board/ti/dra7xx: add support for parallel NAND
This patch adds support for x16 NAND device (MT29F2G16AAD) connected to GPMC
chip-select[0] on DRA7xx EVM.
As GPMC pins are shared by multiple devices, so in addition to this patch
following board settings are required for NAND device detection [1]:
SW5.9 (GPMC_WPN) = OFF (logic-1)
SW5.1 (NAND_BOOTn) = ON (logic-0) /* Active-low */
SW5.2 (NOR_BOOTn) = OFF (logic-1)
SW5.3 (eMMC_BOOTn) = OFF (logic-1)
SW5.4 (QSPI_BOOTn) = OFF (logic-1)
And also set appropriate SYSBOOT configurations
SW2.1 (SYSBOOT[0]) = ON (logic-1) /* selects NAND Boot */
SW2.2 (SYSBOOT[1]) = OFF (logic-0) /* selects NAND Boot */
SW2.3 (SYSBOOT[2]) = OFF (logic-0) /* selects NAND Boot */
SW2.4 (SYSBOOT[3]) = OFF (logic-0) /* selects NAND Boot */
SW2.5 (SYSBOOT[4]) = ON (logic-1) /* selects NAND Boot */
SW2.6 (SYSBOOT[5]) = ON (logic-1) /* selects NAND Boot */
SW2.7 (SYSBOOT[6]) = OFF (logic-0) /* reserved */
SW2.8 (SYSBOOT[7]) = OFF (logic-0) /* reserved */
SW3.1 (SYSBOOT[ 8])= ON (logic-1) /* selects SYS_CLK1 speed */
SW3.2 (SYSBOOT[ 9])= OFF (logic-0) /* selects SYS_CLK1 speed */
SW3.3 (SYSBOOT[10])= ON (logic-1) /* wait-pin monitoring = enabled */
SW3.4 (SYSBOOT[11])= OFF (logic-0) /* device type: Addr/Data Muxed */
SW3.5 (SYSBOOT[12])= ON (logic-1) /* device type: Addr/Data Muxed */
SW3.6 (SYSBOOT[13])= ON (logic-1) /* device bus-width: 1(x16) */
SW3.7 (SYSBOOT[14])= OFF (logic-0) /* reserved */
SW3.8 (SYSBOOT[15])= ON (logic-1) /* reserved */
Following changes are required in board.cfg to enable NAND on J6-EVM:
diff --git a/include/configs/dra7xx_evm.h b/include/configs/dra7xx_evm.h
index 8d0a0eb..10c88dc 100644
--- a/include/configs/dra7xx_evm.h
+++ b/include/configs/dra7xx_evm.h
@@ -143,4 +143,54 @@
#define CONFIG_SYS_SCSI_MAX_DEVICE (CONFIG_SYS_SCSI_MAX_SCSI_ID * \
CONFIG_SYS_SCSI_MAX_LUN)
+/* NAND support */
+#ifdef CONFIG_NAND
+/* NAND: device related configs */
+#define CONFIG_SYS_NAND_PAGE_SIZE 2048
+#define CONFIG_SYS_NAND_OOBSIZE 64
+#define CONFIG_SYS_NAND_BLOCK_SIZE (128*1024)
+#define CONFIG_SYS_NAND_BUSWIDTH_16BIT
+#define CONFIG_SYS_NAND_PAGE_COUNT (CONFIG_SYS_NAND_BLOCK_SIZE / \
+ CONFIG_SYS_NAND_PAGE_SIZE)
+#define CONFIG_SYS_NAND_5_ADDR_CYCLE
+/* NAND: driver related configs */
+#define CONFIG_NAND_OMAP_GPMC
+#define CONFIG_NAND_OMAP_ELM
+#define CONFIG_SYS_NAND_ONFI_DETECTION
+#define CONFIG_NAND_OMAP_ECCSCHEME OMAP_ECC_BCH8_CODE_HW
+#define CONFIG_SYS_NAND_BAD_BLOCK_POS NAND_LARGE_BADBLOCK_POS
+#define CONFIG_SYS_NAND_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, }
+#define CONFIG_SYS_NAND_ECCSIZE 512
+#define CONFIG_SYS_NAND_ECCBYTES 14
+#define MTDIDS_DEFAULT "nand0=nand.0"
+#define MTDPARTS_DEFAULT "mtdparts=nand.0:" \
+ "128k(NAND.SPL)," \
+ "128k(NAND.SPL.backup1)," \
+ "128k(NAND.SPL.backup2)," \
+ "128k(NAND.SPL.backup3)," \
+ "256k(NAND.u-boot-spl-os)," \
+ "1m(NAND.u-boot)," \
+ "128k(NAND.u-boot-env)," \
+ "128k(NAND.u-boot-env.backup1)," \
+ "8m(NAND.kernel)," \
+ "-(NAND.rootfs)"
+#define CONFIG_SYS_NAND_U_BOOT_OFFS 0x000c0000
+/* NAND: SPL related configs */
+#ifdef CONFIG_SPL_NAND_SUPPORT
+#define CONFIG_SPL_NAND_AM33XX_BCH
+#endif
+/* NAND: SPL falcon mode configs */
+#ifdef CONFIG_SPL_OS_BOOT
+#define CONFIG_CMD_SPL_NAND_OFS 0x00080000 /* os-boot params*/
+#define CONFIG_SYS_NAND_SPL_KERNEL_OFFS 0x00200000 /* kernel offset */
+#define CONFIG_CMD_SPL_WRITE_SIZE 0x2000
+#endif
+#endif /* !CONFIG_NAND */
+
#endif /* __CONFIG_DRA7XX_EVM_H */