On Mon, 28 Apr 2008 16:29:14 -0700, "Steve Sakoman" <sakoman@xxxxxxxxx>
wrote:
> From: Steve Sakoman <steve@xxxxxxxxxxx>
>
> Add onenand support for OMAP3 EVM
>
> Signed-off-by: Steve Sakoman <steve@xxxxxxxxxxx>
> ---
> arch/arm/mach-omap2/Makefile | 3
> arch/arm/mach-omap2/board-omap3evm-flash.c | 117
> +++++++++++++++++++++++++++++
> arch/arm/mach-omap2/board-omap3evm.c | 1
> include/asm-arm/arch-omap/board-omap3evm.h | 4 +
> 4 files changed, 126 insertions(+), 1 deletion(-)
> diff -uprN -X a/Documentation/dontdiff
> a/arch/arm/mach-omap2/board-omap3evm.c
> b/arch/arm/mach-omap2/board-omap3evm.c
> --- a/arch/arm/mach-omap2/board-omap3evm.c 2008-04-27 22:48:55.000000000
> -0700
> +++ b/arch/arm/mach-omap2/board-omap3evm.c 2008-04-28 09:21:22.000000000
> -0700
> @@ -71,6 +71,7 @@ static void __init omap3_evm_init(void)
> hsmmc_init();
> usb_musb_init();
> usb_ehci_init();
> + omap3evm_flash_init();
> }
>
> arch_initcall(omap3_evm_i2c_init);
> diff -uprN -X a/Documentation/dontdiff
> a/arch/arm/mach-omap2/board-omap3evm-flash.c
> b/arch/arm/mach-omap2/board-omap3evm-flash.c
> --- a/arch/arm/mach-omap2/board-omap3evm-flash.c 1969-12-31
> 16:00:00.000000000 -0800
> +++ b/arch/arm/mach-omap2/board-omap3evm-flash.c 2008-04-28
> 09:11:46.000000000 -0700
> @@ -0,0 +1,117 @@
> +/*
> + * board-omap3evm-flash.c
> + *
> + * Copyright (c) 2008 Texas Instruments,
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/platform_device.h>
> +#include <linux/mtd/mtd.h>
> +#include <linux/mtd/partitions.h>
> +#include <linux/mtd/nand.h>
> +#include <linux/mtd/onenand_regs.h>
> +#include <linux/types.h>
> +#include <linux/io.h>
> +
> +#include <asm/mach/flash.h>
> +#include <asm/arch/onenand.h>
> +#include <asm/arch/board.h>
> +#include <asm/arch/gpmc.h>
> +#include <asm/arch/nand.h>
> +
> +static int omap3evm_onenand_setup(void __iomem *);
> +
> +static struct mtd_partition omap3evm_onenand_partitions[] = {
> + {
> + .name = "xloader",
> + .offset = 0,
> + .size = 4*(64*2048),
should be .size = SZ_512k,
> + .mask_flags = MTD_WRITEABLE
> + },
> + {
> + .name = "uboot",
> + .offset = MTDPART_OFS_APPEND,
> + .size = 15*(64*2048),
most of the boards use .size = SZ_128K here
> + .mask_flags = MTD_WRITEABLE
> + },
> + {
> + .name = "params",
> + .offset = MTDPART_OFS_APPEND,
> + .size = 1*(64*2048),
SZ_128K
> + },
> + {
> + .name = "linux",
> + .offset = MTDPART_OFS_APPEND,
> + .size = 40*(64*2048),
This looks too big for kernel only.
SZ_4M is way enough.
> + },
> + {
> + .name = "jffs2",
> + .offset = MTDPART_OFS_APPEND,
> + .size = MTDPART_SIZ_FULL,
> + },
> +};
> +
> +static struct omap_onenand_platform_data omap3evm_onenand_data = {
> + .parts = omap3evm_onenand_partitions,
> + .nr_parts = ARRAY_SIZE(omap3evm_onenand_partitions),
> + .onenand_setup = omap3evm_onenand_setup,
> + .dma_channel = -1, /* disable DMA in OMAP OneNAND driver */
> +};
> +
> +static struct platform_device omap3evm_onenand_device = {
> + .name = "omap2-onenand",
> + .id = -1,
> + .dev = {
> + .platform_data = &omap3evm_onenand_data,
> + },
> +};
> +
> +/*
> + * omap3evm_onenand_setup - Set the onenand sync mode
> + * @onenand_base: The onenand base address in GPMC memory map
> + *
> + */
> +
> +static int omap3evm_onenand_setup(void __iomem *onenand_base)
> + {
> + /* nothing is required to be setup for onenand as of now */
> + return 0;
> +}
> +
> +void __init omap3evm_flash_init(void)
> +{
> + u8 cs = 0;
> + u8 onenandcs = GPMC_CS_NUM + 1;
> +
> + while (cs < GPMC_CS_NUM) {
> + u32 ret = 0;
> + ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG7);
> +
> + /*
> + * xloader/Uboot would have programmed the oneNAND
> + * base address for us This is a ugly hack. The proper
> + * way of doing this is to pass the setup of u-boot up
> + * to kernel using kernel params - something on the
> + * lines of machineID. Check if oneNAND is configured
> + */
> + if ((ret & 0x3F) == (ONENAND_MAP >> 24))
> + onenandcs = cs;
> + cs++;
> + }
> + if (onenandcs > GPMC_CS_NUM) {
> + printk(KERN_INFO "OneNAND: Unable to find configuration "
> + " in GPMC\n ");
> + return;
> + }
> +
> + if (onenandcs < GPMC_CS_NUM) {
> + omap3evm_onenand_data.cs = onenandcs;
> + if (platform_device_register(&omap3evm_onenand_device) < 0)
> + printk(KERN_ERR "Unable to register OneNAND device\n");
> + }
> +}
> +
> diff -uprN -X a/Documentation/dontdiff a/arch/arm/mach-omap2/Makefile
> b/arch/arm/mach-omap2/Makefile
> --- a/arch/arm/mach-omap2/Makefile 2008-04-28 07:29:24.000000000 -0700
> +++ b/arch/arm/mach-omap2/Makefile 2008-04-28 09:11:46.000000000 -0700
> @@ -39,7 +39,8 @@ obj-$(CONFIG_MACH_OMAP_3430SDP) += boar
> board-3430sdp-flash.o
> obj-$(CONFIG_MACH_OMAP3EVM) += board-omap3evm.o \
> hsmmc.o \
> - usb-musb.o usb-ehci.o
> + usb-musb.o usb-ehci.o \
> + board-omap3evm-flash.o
> obj-$(CONFIG_MACH_OMAP3_BEAGLE) += board-omap3beagle.o \
> usb-musb.o usb-ehci.o \
> hsmmc.o
> diff -uprN -X a/Documentation/dontdiff
> a/include/asm-arm/arch-omap/board-omap3evm.h
> b/include/asm-arm/arch-omap/board-omap3evm.h
> --- a/include/asm-arm/arch-omap/board-omap3evm.h 2008-04-26
> 06:32:31.000000000 -0700
> +++ b/include/asm-arm/arch-omap/board-omap3evm.h 2008-04-28
> 09:21:19.000000000 -0700
> @@ -29,7 +29,11 @@
> #ifndef __ASM_ARCH_OMAP3_EVM_H
> #define __ASM_ARCH_OMAP3_EVM_H
>
> +extern void omap3evm_flash_init(void);
> +
> #define TWL4030_IRQNUM INT_34XX_SYS_NIRQ
>
> +#define ONENAND_MAP 0x20000000
> +
> #endif /* __ASM_ARCH_OMAP3_EVM_H */
> --
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--
Best Regards,
Felipe Balbi
http://felipebalbi.com
me@xxxxxxxxxxxxxxx
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