Hi Tony,
This patch has some issues regarding the partitioning.
Please ignore this. I will resend it again.
Best Regards,
Arun KS
On Wed, Aug 20, 2008 at 9:46 PM, Arun KS <arunks@xxxxxxxxxxxxxxxxxxxx> wrote:
> This patch enables the nand support for omap2evm board
>
> Signed-off-by: Arun KS <arunks@xxxxxxxxxxxxxxxxxxxx>
> ---
> arch/arm/mach-omap2/board-omap2evm.c | 96 ++++++++++++++++++++++++++++++++++
> 1 files changed, 96 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/board-omap2evm.c
> b/arch/arm/mach-omap2/board-omap2evm.c
> index 4188222..0dc3205 100644
> --- a/arch/arm/mach-omap2/board-omap2evm.c
> +++ b/arch/arm/mach-omap2/board-omap2evm.c
> @@ -19,6 +19,9 @@
> #include <linux/io.h>
> #include <linux/input.h>
> #include <linux/i2c/twl4030.h>
> +#include <linux/mtd/mtd.h>
> +#include <linux/mtd/partitions.h>
> +#include <linux/mtd/nand.h>
>
> #include <mach/hardware.h>
> #include <asm/mach-types.h>
> @@ -30,6 +33,62 @@
> #include <mach/common.h>
> #include <mach/hsmmc.h>
> #include <mach/keypad.h>
> +#include <mach/gpmc.h>
> +#include <mach/nand.h>
> +
> +#define GPMC_CS0_BASE 0x60
> +#define GPMC_CS_SIZE 0x30
> +
> +static struct mtd_partition nand_partitions[] = {
> + {
> + .name = "X-Loader",
> + .offset = 0,
> + .size = 4*(64*2048), /* 0-3 blks reserved.
> + Mandated by ROM code */
> + .mask_flags = MTD_WRITEABLE /* force read-only */
> + },
> + {
> + .name = "U-Boot",
> + .offset = MTDPART_OFS_APPEND,
> + .size = 4*(64*2048),
> + .mask_flags = MTD_WRITEABLE /* force read-only */
> + },
> + {
> + .name = "U-Boot Environment",
> + .offset = MTDPART_OFS_APPEND,
> + .size = 2*(64*2048),
> + },
> + {
> + .name = "Kernel",
> + .offset = MTDPART_OFS_APPEND,
> + .size = 32*(64*2048), /* 4*1M */
> + },
> + {
> + .name = "File System",
> + .offset = MTDPART_OFS_APPEND,
> + .size = MTDPART_SIZ_FULL,
> + },
> +};
> +
> +static struct omap_nand_platform_data omap2evm_nand_data = {
> + .parts = nand_partitions,
> + .nr_parts = ARRAY_SIZE(nand_partitions),
> + .dma_channel = -1, /* disable DMA in OMAP OneNAND driver */
> +};
> +
> +static struct resource omap2evm_nand_resource = {
> + .flags = IORESOURCE_MEM,
> +};
> +
> +static struct platform_device omap2evm_nand_device = {
> + .name = "omap2-nand",
> + .id = -1,
> + .dev = {
> + .platform_data = &omap2evm_nand_data,
> + },
> + .num_resources = 1,
> + .resource = &omap2evm_nand_resource,
> +};
>
> static struct resource omap2evm_smc911x_resources[] = {
> [0] = {
> @@ -152,6 +211,42 @@ static struct platform_device
> *omap2_evm_devices[] __initdata = {
> &omap2evm_smc911x_device,
> &omap2evm_kp_device,
> };
> +void __init omap2evm_flash_init(void)
> +{
> + u8 cs = 0;
> + u8 nandcs = GPMC_CS_NUM + 1;
> +
> + u32 gpmc_base_add = OMAP243X_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) {
> + omap2evm_nand_data.cs = nandcs;
> + omap2evm_nand_data.gpmc_cs_baseaddr = (void *)
> + (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
> + omap2evm_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
> +
> + printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
> + if (platform_device_register(&omap2evm_nand_device) < 0)
> + printk(KERN_ERR "Unable to register NAND device\n");
> + }
> +}
>
> static void __init omap2_evm_init(void)
> {
> @@ -160,6 +255,7 @@ static void __init omap2_evm_init(void)
> omap_board_config_size = ARRAY_SIZE(omap2_evm_config);
> omap_serial_init();
> hsmmc_init();
> + omap2evm_flash_init();
> }
>
> static void __init omap2_evm_map_io(void)
> --
> 1.5.3.4
>
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