From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeroen Hofstee <jeroen@myspectrum.nl>
Date: Tue, 16 Dec 2014 21:00:58 +0100
Subject: [U-Boot] [PATCH 1/2] image: bootm: Add OpenRTOS image type
In-Reply-To: <1418735242-5801-1-git-send-email-marex@denx.de>
References: <1418735242-5801-1-git-send-email-marex@denx.de>
Message-ID: <54908F7A.1010603@myspectrum.nl>
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To: u-boot@lists.denx.de

Hello Marek,

On 16-12-14 14:07, Marek Vasut wrote:
> Add separate image type for the Wittenstein OpenRTOS .
>
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Tom Rini <trini@ti.com>
> ---
>   common/bootm_os.c | 29 +++++++++++++++++++++++++++++
>   common/image.c    |  4 ++++
>   include/image.h   |  1 +
>   3 files changed, 34 insertions(+)
>
> diff --git a/common/bootm_os.c b/common/bootm_os.c
> index 5be4467..72477f0 100644
> --- a/common/bootm_os.c
> +++ b/common/bootm_os.c
> @@ -404,6 +404,32 @@ static int do_bootm_integrity(int flag, int argc, char * const argv[],
>   }
>   #endif
>   
> +#ifdef CONFIG_BOOTM_OPENRTOS
> +static int do_bootm_openrtos(int flag, int argc, char * const argv[],
> +			   bootm_headers_t *images)
> +{
> +	void (*entry_point)(void);
> +
> +	if (flag != BOOTM_STATE_OS_GO)
> +		return 0;
> +
> +	entry_point = (void (*)(void))images->ep;
> +
> +	printf("## Transferring control to OpenRTOS (at address %08lx) ...\n",
> +		(ulong)entry_point);
> +
> +	bootstage_mark(BOOTSTAGE_ID_RUN_OS);

You might consider adding a prepare function here, similar to e.g.
boot_prep_vxworks(images) which eventually calls cleanup_before_linux(),
so you end up jumping into the image with caches flushed and disabled
(at least on ARM).  I don't know if this is needed in your case though...

> +
> +	/*
> +	 * OpenRTOS Parameters:
> +	 *   None
> +	 */
> +	(*entry_point)();
> +
> +	return 1;
> +}
> +#endif

Regards,
Jeroen