From mboxrd@z Thu Jan 1 00:00:00 1970 From: York Sun Date: Tue, 8 Jan 2013 11:24:10 -0800 Subject: [U-Boot] [PATCH 1/7] powerpc/mpc8xxx: Enable entering DDR debugging by key press In-Reply-To: <20130108063532.117F6200732@gemini.denx.de> References: <1357323245-12455-1-git-send-email-yorksun@freescale.com> <20130108063532.117F6200732@gemini.denx.de> Message-ID: <50EC725A.4010505@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 01/07/2013 10:35 PM, Wolfgang Denk wrote: > Dear York Sun, > > In message <1357323245-12455-1-git-send-email-yorksun@freescale.com> you wrote: >> ... >> CONFIG_FSL_DDR_INTERACTIVE needs to be defined in header file. To enter the >> debug mode by key press, press key 'd' shortly after reset, like one would >> do to abort auto booting. It is fixed to lower case 'd' at this moment. > ... >> --- a/doc/README.fsl-ddr >> +++ b/doc/README.fsl-ddr >> @@ -268,6 +268,13 @@ be activated by saving an environment variable "ddr_interactive". The value >> doesn't matter. Once activated, U-boot prompts "FSL DDR>" before enabling DDR >> controller. The available commands can be seen by typing "help". >> >> +Another way to enter debug mode without using environment variable is to send >> +a key press during boot, like one would do to abort auto boot. To save booting >> +time, no additioal delay is added so the window to send the key press is very >> +short. For example, user can send the key press using reset command followed by >> +hitting enter key twice. In case of power on reset, user can keep hitting any >> +key while applying the power. > > The documentation here does not mention the 'd' key at all. Guess it > should? > > It should. And James found my error and fixed in the patch 5/7 in this series. York