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-rw-r--r--arch/arm/mach-davinci/board-dm646x-evm.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c
index 8cf49790f3a7..75b2b6fb8594 100644
--- a/arch/arm/mach-davinci/board-dm646x-evm.c
+++ b/arch/arm/mach-davinci/board-dm646x-evm.c
@@ -27,6 +27,10 @@
#include <media/tvp514x.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@@ -34,6 +38,7 @@
#include <mach/common.h>
#include <mach/serial.h>
#include <mach/i2c.h>
+#include <mach/nand.h>
#if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \
defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE)
@@ -42,6 +47,11 @@
#define HAS_ATA 0
#endif
+#define DAVINCI_ASYNC_EMIF_CONTROL_BASE 0x20008000
+#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE 0x42000000
+
+#define NAND_BLOCK_SIZE SZ_128K
+
/* CPLD Register 0 bits to control ATA */
#define DM646X_EVM_ATA_RST BIT(0)
#define DM646X_EVM_ATA_PWD BIT(1)
@@ -77,6 +87,63 @@ static struct davinci_uart_config uart_config __initdata = {
.enabled_uarts = (1 << 0),
};
+/* Note: We are setting first partition as 'bootloader' constituting UBL, U-Boot
+ * and U-Boot environment this avoids dependency on any particular combination
+ * of UBL, U-Boot or flashing tools etc.
+ */
+static struct mtd_partition davinci_nand_partitions[] = {
+ {
+ /* UBL, U-Boot with environment */
+ .name = "bootloader",
+ .offset = MTDPART_OFS_APPEND,
+ .size = 16 * NAND_BLOCK_SIZE,
+ .mask_flags = MTD_WRITEABLE, /* force read-only */
+ }, {
+ .name = "kernel",
+ .offset = MTDPART_OFS_APPEND,
+ .size = SZ_4M,
+ .mask_flags = 0,
+ }, {
+ .name = "filesystem",
+ .offset = MTDPART_OFS_APPEND,
+ .size = MTDPART_SIZ_FULL,
+ .mask_flags = 0,
+ }
+};
+
+static struct davinci_nand_pdata davinci_nand_data = {
+ .mask_cle = 0x80000,
+ .mask_ale = 0x40000,
+ .parts = davinci_nand_partitions,
+ .nr_parts = ARRAY_SIZE(davinci_nand_partitions),
+ .ecc_mode = NAND_ECC_HW,
+ .options = 0,
+};
+
+static struct resource davinci_nand_resources[] = {
+ {
+ .start = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE,
+ .end = DAVINCI_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = DAVINCI_ASYNC_EMIF_CONTROL_BASE,
+ .end = DAVINCI_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device davinci_nand_device = {
+ .name = "davinci_nand",
+ .id = 0,
+
+ .num_resources = ARRAY_SIZE(davinci_nand_resources),
+ .resource = davinci_nand_resources,
+
+ .dev = {
+ .platform_data = &davinci_nand_data,
+ },
+};
+
/* CPLD Register 0 Client: used for I/O Control */
static int cpld_reg0_probe(struct i2c_client *client,
const struct i2c_device_id *id)
@@ -632,6 +699,8 @@ static __init void evm_init(void)
dm646x_init_mcasp0(&dm646x_evm_snd_data[0]);
dm646x_init_mcasp1(&dm646x_evm_snd_data[1]);
+ platform_device_register(&davinci_nand_device);
+
if (HAS_ATA)
dm646x_init_ide();