diff options
| author | Tim Harvey <tharvey@gateworks.com> | 2017-03-13 08:51:09 -0700 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2017-03-19 17:39:59 +0100 |
| commit | d883fcc6bbb2fcc3df90857fee99c2f543a0289c (patch) | |
| tree | 9c90c135db8e4a3e1809beff9729bc172771dc7e /board/gateworks | |
| parent | 3e0a71c157951c0f88a31182a6f3159cd3e12e23 (diff) | |
imx: ventana: add EMMC configuration
Prepare for boards with EMMC instead of NAND flash
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Diffstat (limited to 'board/gateworks')
| -rw-r--r-- | board/gateworks/gw_ventana/README | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/board/gateworks/gw_ventana/README b/board/gateworks/gw_ventana/README index f3f8998aae..57c64a1b2a 100644 --- a/board/gateworks/gw_ventana/README +++ b/board/gateworks/gw_ventana/README @@ -30,7 +30,12 @@ will build the following artifacts from U-Boot source: To build U-Boot for the Gateworks Ventana product family: - make gwventana_config +For NAND FLASH based boards: + make gwventana_nand_config + make + +For EMMC FLASH based boards: + make gwventana_emmc_config make @@ -99,11 +104,11 @@ This information is taken from: More details about the i.MX6 BOOT ROM can be found in the IMX6 reference manual. -3.1. boot from micro-SD ------------------------ +3.1. boot from MMC (eMMC/microSD) +--------------------------------- When the IMX6 eFUSE settings have been factory programmed to boot from -micro-SD the SPL will be loaded from offset 0x400 (1KB). Once the SPL is +MMC the SPL will be loaded from offset 0x400 (1KB). Once the SPL is booted, it will load and execute U-Boot (u-boot.img) from offset 69KB on the micro-SD (defined by CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR). @@ -111,11 +116,11 @@ While it is technically possible to enable the SPL to be able to load U-Boot from a file on a FAT/EXT filesystem on the micro-SD, we chose to use raw micro-SD access to keep the code-size and boot time of the SPL down. -For these reasons a micro-SD that will be used as an IMX6 primary boot +For these reasons an MMC device that will be used as an IMX6 primary boot device must be carefully partitioned and prepared. The following shell commands are executed on a Linux host (adjust DEV to the -block storage device of your micro-SD): +block storage device of your MMC, ie /dev/mmcblk0): DEV=/dev/sdc # zero out 1MB of device |