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+Date: Mon, 04 Aug 2008 17:58:22 +0200
+From: Dirk Behme <dirk.behme@googlemail.com>
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+To: "linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>
+CC: Steve Sakoman <steve@sakoman.com>
+Subject: [PATCH 2/3 v2] OMAP3 Beagle: add nand support
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+From: Steve Sakoman <steve@sakoman.com>, Dirk Behme <dirk.behme@gmail.com>
+
+Add nand support to omap3beagle
+
+Signed-off-by: Steve Sakoman <steve@sakoman.com>
+Signed-off-by: Dirk Behme <dirk.behme@gmail.com>
+
+
+--------------030806030601010501010906
+Content-Type: text/plain;
+ name="2_nand.txt"
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+ filename="2_nand.txt"
+
+Index: linux-beagle/arch/arm/mach-omap2/board-omap3beagle.c
+===================================================================
+--- linux-beagle.orig/arch/arm/mach-omap2/board-omap3beagle.c
++++ linux-beagle/arch/arm/mach-omap2/board-omap3beagle.c
+@@ -20,11 +20,15 @@
+ #include <linux/clk.h>
+ #include <linux/io.h>
+ #include <linux/leds.h>
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/partitions.h>
++#include <linux/mtd/nand.h>
+
+ #include <asm/hardware.h>
+ #include <asm/mach-types.h>
+ #include <asm/mach/arch.h>
+ #include <asm/mach/map.h>
++#include <asm/mach/flash.h>
+
+ #include <asm/arch/gpio.h>
+ #include <asm/arch/board.h>
+@@ -32,6 +36,64 @@
+ #include <asm/arch/usb-ehci.h>
+ #include <asm/arch/hsmmc.h>
+ #include <asm/arch/common.h>
++#include <asm/arch/gpmc.h>
++#include <asm/arch/nand.h>
++
++#define GPMC_CS0_BASE 0x60
++#define GPMC_CS_SIZE 0x30
++
++static struct mtd_partition omap3beagle_nand_partitions[] = {
++ /* All the partition sizes are listed in terms of NAND block size */
++ {
++ .name = "X-Loader",
++ .offset = 0,
++ .size = 4*(64 * 2048),
++ .mask_flags = MTD_WRITEABLE, /* force read-only */
++ },
++ {
++ .name = "U-Boot",
++ .offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
++ .size = 15*(64 * 2048),
++ .mask_flags = MTD_WRITEABLE, /* force read-only */
++ },
++ {
++ .name = "U-Boot Env",
++ .offset = MTDPART_OFS_APPEND, /* Offset = 0x260000 */
++ .size = 1*(64 * 2048),
++ },
++ {
++ .name = "Kernel",
++ .offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
++ .size = 32*(64 * 2048),
++ },
++ {
++ .name = "File System",
++ .offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
++ .size = MTDPART_SIZ_FULL,
++ },
++};
++
++static struct omap_nand_platform_data omap3beagle_nand_data = {
++ .parts = omap3beagle_nand_partitions,
++ .nr_parts = ARRAY_SIZE(omap3beagle_nand_partitions),
++ .dma_channel = -1, /* disable DMA in OMAP NAND driver */
++ .nand_setup = NULL,
++ .dev_ready = NULL,
++};
++
++static struct resource omap3beagle_nand_resource = {
++ .flags = IORESOURCE_MEM,
++};
++
++static struct platform_device omap3beagle_nand_device = {
++ .name = "omap2-nand",
++ .id = -1,
++ .dev = {
++ .platform_data = &omap3beagle_nand_data,
++ },
++ .num_resources = 1,
++ .resource = &omap3beagle_nand_resource,
++};
+
+ static struct omap_uart_config omap3_beagle_uart_config __initdata = {
+ .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
+@@ -113,6 +175,44 @@ static struct platform_device *omap3_bea
+ &leds_gpio,
+ };
+
++void __init omap3beagle_flash_init(void)
++{
++ u8 cs = 0;
++ u8 nandcs = GPMC_CS_NUM + 1;
++
++ u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
++
++ /* find out the chip-select on which NAND exists */
++ while (cs < GPMC_CS_NUM) {
++ u32 ret = 0;
++ ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
++
++ if ((ret & 0xC00) == 0x800) {
++ printk(KERN_INFO "Found NAND on CS%d\n", cs);
++ if (nandcs > GPMC_CS_NUM)
++ nandcs = cs;
++ }
++ cs++;
++ }
++
++ if (nandcs > GPMC_CS_NUM) {
++ printk(KERN_INFO "NAND: Unable to find configuration "
++ "in GPMC\n ");
++ return;
++ }
++
++ if (nandcs < GPMC_CS_NUM) {
++ omap3beagle_nand_data.cs = nandcs;
++ omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
++ (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
++ omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
++
++ printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
++ if (platform_device_register(&omap3beagle_nand_device) < 0)
++ printk(KERN_ERR "Unable to register NAND device\n");
++ }
++}
++
+ static void __init omap3_beagle_init(void)
+ {
+ platform_add_devices(omap3_beagle_devices, ARRAY_SIZE(omap3_beagle_devices));
+@@ -122,6 +222,7 @@ static void __init omap3_beagle_init(voi
+ hsmmc_init();
+ usb_musb_init();
+ usb_ehci_init();
++ omap3beagle_flash_init();
+ }
+
+ arch_initcall(omap3_beagle_i2c_init);
+
+--------------030806030601010501010906--
+--
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projects / vuplus_openembedded / commitdiff