From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-lb0-f177.google.com ([209.85.217.177]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1SQF7N-0006N9-NG for barebox@lists.infradead.org; Fri, 04 May 2012 09:48:06 +0000 Received: by lbbgg6 with SMTP id gg6so2385936lbb.36 for ; Fri, 04 May 2012 02:48:03 -0700 (PDT) Message-ID: <4FA3A5CF.9050503@gmail.com> Date: Fri, 04 May 2012 15:47:59 +0600 From: Alexey Galakhov MIME-Version: 1.0 References: <1336050844-7043-1-git-send-email-agalakhov@gmail.com> <1336050844-7043-5-git-send-email-agalakhov@gmail.com> <201205031959.57093.jbe@pengutronix.de> In-Reply-To: <201205031959.57093.jbe@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [PATCH 4/4] S5PV210 iROM magic boot code To: Juergen Beisert Cc: barebox@lists.infradead.org On 03.05.2012 23:59, Juergen Beisert wrote: > It seems to be a low hanging fruit to use the iROM to access some of the > peripherals. But there is no way to tell the compiler the calling convention > to the ROM functions. And the entry points seems guessed only. This results > into "it works for me with this compiler and these compiler flags and that > CPU's silicon revision"... > > The S3C6410 CPU comes also with such an iROM. But calling it is only useful in > the first stage loader (and the S3C6410 iROM has a defined jump table to > call specific functions, there is no need to guess the real entry points). > > Writing a Barebox driver for this MMC/SD unit instead should be the correct > way. > > Juergen Agree. This function is for 1st stage only. I plan to remove it as soon as MMC driver will be complete. Right now it is needed, however, to boot 2nd stage. Right not I have working NAND, DRAM and UART. I plan to get working USB soon. MMC seems to be (almost) generic SDHCI (very similar to existing imx driver). Regards, Alex _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox