From mboxrd@z Thu Jan 1 00:00:00 1970 From: York Sun Date: Mon, 10 Feb 2014 18:34:00 -0800 Subject: [U-Boot] [PATCH] driver/mxc_i2c: Move static data structure to global_data In-Reply-To: <1392069772-24742-1-git-send-email-yorksun@freescale.com> References: <1392069772-24742-1-git-send-email-yorksun@freescale.com> Message-ID: <52F98C18.7020402@freescale.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 02/10/2014 02:02 PM, York Sun wrote: > This driver needs a data structure in SRAM before SDRAM is available. > This is not alway the case using .data section. Moving this data > structure to global_data guarantees it is writable. > > Signed-off-by: York Sun > CC: Troy Kisky > --- > drivers/i2c/mxc_i2c.c | 18 ++++++++---------- > include/asm-generic/global_data.h | 3 +++ > 2 files changed, 11 insertions(+), 10 deletions(-) > Troy, Following Tom's suggestion, I am trying to use linker script to put the srdata into SRAM. But I still have a concern regarding initializing the srdata. I don't see it is initialized anywhere. Do you presume the data is wiped out before the driver runs? If that's the case, I need to clear the data somewhere in my code. York