Hi,
* Vimal Singh <vimal.newwork@xxxxxxxxx> [091203 06:09]:
> From 13d52884956a26f93826c443e2b8bd78615f74d6 Mon Sep 17 00:00:00 2001
> From: Vimal Singh <vimalsingh@xxxxxx>
> Date: Thu, 26 Nov 2009 16:10:24 +0530
> Subject: [PATCH] OMAP: SDP: Introducing 'board-sdp-flash.c' for flash init
>
> This patch adds 'board-sdp-flash.c', which could be utilized
> by boards similar to 3430SDP. (For ex: 2430sdp, 36030sdp).
>
> This file does initialization for all three flash devices present
> in SDP boards (NOR, NAND, OneNAND), by finding there 'cs' number
> dynamically using switch setting information (S8: 1-4).
> This also expects partition information from core board files (for
> ex: board-3430sdp.c). Which allows to choose different default
> partitions for different boards.
>
> A new structure is created for this purpose: 'flash_partitions'
> in 'mach/board-sdp.h'. This has two members:
> 1. struct mtd_partition *parts
> 2. int nr_parts
>
> A board file is expected to fill this structure and pass it to
> 'sdp-flsash-init'. Partition information should be passed in
> structure array of 'flash_partitions'. Partition information should
> be passed in below sequence in array:
> NOR
> OneNAND
> NAND
>
> Signed-off-by: Vimal Singh <vimalsingh@xxxxxx>
> ---
> arch/arm/mach-omap2/board-sdp-flash.c | 246 ++++++++++++++++++++++++++
> arch/arm/mach-omap2/include/mach/board-sdp.h | 22 +++
> arch/arm/plat-omap/include/plat/gpmc.h | 2 +
> 3 files changed, 270 insertions(+), 0 deletions(-)
> create mode 100644 arch/arm/mach-omap2/board-sdp-flash.c
> create mode 100644 arch/arm/mach-omap2/include/mach/board-sdp.h
>
> diff --git a/arch/arm/mach-omap2/board-sdp-flash.c
> b/arch/arm/mach-omap2/board-sdp-flash.c
> new file mode 100644
> index 0000000..fbbcd0e
> --- /dev/null
> +++ b/arch/arm/mach-omap2/board-sdp-flash.c
<snip>
> +__init board_nand_init(struct flash_partitions sdp_nand_parts, u8 cs)
> +{
> + sdp_nand_data.cs = cs;
> + sdp_nand_data.parts = sdp_nand_parts.parts;
> + sdp_nand_data.nr_parts = sdp_nand_parts.nr_parts;
> +
> + sdp_nand_data.gpmc_cs_baseaddr = (void *)(OMAP34XX_GPMC_VIRT +
> + GPMC_CS0_BASE +
> + cs * GPMC_CS_SIZE);
> + sdp_nand_data.gpmc_baseaddr = (void *) (OMAP34XX_GPMC_VIRT);
> +
> + gpmc_nand_init(&sdp_nand_data);
> +}
This does not look right. You're supposed to use gpmc_cs_request()
for allocating the GPMC area based on the chip select and size.
> --- a/arch/arm/plat-omap/include/plat/gpmc.h
> +++ b/arch/arm/plat-omap/include/plat/gpmc.h
> @@ -27,6 +27,8 @@
>
> #define GPMC_CONFIG 0x50
> #define GPMC_STATUS 0x54
> +#define GPMC_CS0_BASE 0x60
> +#define GPMC_CS_SIZE 0x30
The GPMC_CS0_BASE and GPMC_CS_SIZE seem to be values specic to
your board, not for the GPMC hardware.
Tony
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