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From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: Jan Weitzel <j.weitzel@phytec.de>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH v5] xload: get barebox size from barebox_arm_head
Date: Thu, 6 Sep 2012 15:23:49 +0200	[thread overview]
Message-ID: <20120906132349.GI20330@game.jcrosoft.org> (raw)
In-Reply-To: <1346935271-15317-1-git-send-email-j.weitzel@phytec.de>

On 14:41 Thu 06 Sep     , Jan Weitzel wrote:
> Add functions to read the barebox_arm_head, check barebox magicword
> and read out the barebox image size.
> Create a inital partion of 1Mb to access the barebox image on nand.
> 
> Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
> ---
> v2: remove fall back if header read fail 
> v3: fix header check, rebase master 
> v4: factorize barebox detection
> v5: mv devines to include/filetype.h
> 
>  arch/arm/include/asm/barebox-arm-head.h |    9 +++++
>  arch/arm/mach-omap/include/mach/xload.h |    2 +-
>  arch/arm/mach-omap/xload.c              |   57 ++++++++++++++++++++++++++++--
>  common/filetype.c                       |    2 +-
>  include/filetype.h                      |   16 +++++++++
>  4 files changed, 71 insertions(+), 6 deletions(-)
> 
> diff --git a/arch/arm/mach-omap/include/mach/xload.h b/arch/arm/mach-omap/include/mach/xload.h
> index 844b57f..26f1b68 100644
> --- a/arch/arm/mach-omap/include/mach/xload.h
> +++ b/arch/arm/mach-omap/include/mach/xload.h
> @@ -1,7 +1,7 @@
>  #ifndef _MACH_XLOAD_H
>  #define _MACH_XLOAD_H
>  
> -void *omap_xload_boot_nand(int offset, int size);
> +void *omap_xload_boot_nand(int offset);
>  void *omap_xload_boot_mmc(void);
>  
>  enum omap_boot_src {
> diff --git a/arch/arm/mach-omap/xload.c b/arch/arm/mach-omap/xload.c
> index 13024ab..0afeea9 100644
> --- a/arch/arm/mach-omap/xload.c
> +++ b/arch/arm/mach-omap/xload.c
> @@ -7,16 +7,65 @@
>  #include <fcntl.h>
>  #include <mach/xload.h>
>  #include <sizes.h>
> +#include <filetype.h>
>  
> -void *omap_xload_boot_nand(int offset, int size)
> +void *read_image_head(const char *name)
>  {
> +	void *header = xmalloc(ARM_HEAD_SIZE);
> +	struct cdev *cdev;
>  	int ret;
> -	void *to = xmalloc(size);
> +
> +	cdev = cdev_open(name, O_RDONLY);
> +	if (!cdev) {
> +		printf("failed to open partition\n");
> +		return NULL;
> +	}
> +
> +	ret = cdev_read(cdev, header, ARM_HEAD_SIZE, 0, 0);
> +	cdev_close(cdev);
> +
> +	if (ret != ARM_HEAD_SIZE) {
> +		printf("failed to read from partition\n");
> +		return NULL;
> +	}
> +
> +	return header;
> +}
> +
> +unsigned int get_image_size(void *head)
> +{
> +	unsigned int ret = 0;
> +	unsigned int *psize = head + ARM_HEAD_SIZE_OFFSET;
> +
> +	if (is_barebox_arm_head(head))
> +		ret = *psize;
> +	debug("Detected barebox image size %u\n", ret);
> +
> +	return ret;
> +}
> +
> +void *omap_xload_boot_nand(int offset)
> +{
> +	int ret;
> +	int size;
> +	void *to, *header;
>  	struct cdev *cdev;
>  
> -	devfs_add_partition("nand0", offset, size, DEVFS_PARTITION_FIXED, "x");
> +	devfs_add_partition("nand0", offset, SZ_1M, DEVFS_PARTITION_FIXED, "x");
I'd map 8M so can boot a kernel directly too

Best Regards,
J.

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  reply	other threads:[~2012-09-06 13:23 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-09-06 10:20 [PATCH 1/2] kbuild: keep the barebox binary accessible Jan Luebbe
2012-09-06 10:20 ` [PATCH 2/2] Makefile: add target to produce a SPL compatible uImage Jan Luebbe
2012-09-06 10:32   ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-06 12:41   ` [PATCH v5] xload: get barebox size from barebox_arm_head Jan Weitzel
2012-09-06 13:23     ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2012-09-06 17:39     ` Sascha Hauer
2012-09-07 10:25     ` Sascha Hauer
2012-09-06 17:32 ` [PATCH 1/2] kbuild: keep the barebox binary accessible Sascha Hauer

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