image_types_fsl.bbclass: Fix mxs' imx-bootlets support

The imx-bootlets (and per design elftosb) enforce the use of offset so
we skip the first 1024KiB from the disk and start from there instead
of 4MiB as done for other SoCs.

Change-Id: I51e2989ef2007aa752e67f7d1b38a9de5c1ff9c8
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>

diff --git a/meta-fsl-arm/classes/image_types_fsl.bbclass b/meta-fsl-arm/classes/image_types_fsl.bbclass
index 1144bff409abe3588de204f4d74fdfb6056cd08d..c3698322b7072bc11ab59ffa8b876afce15c8e10 100644 (file)
--- a/meta-fsl-arm/classes/image_types_fsl.bbclass
+++ b/meta-fsl-arm/classes/image_types_fsl.bbclass
@@ -146,23 +146,23 @@ generate_mxs_sdcard () {
                imx-bootlets)
                # The disk layout used is:
                #
-               #    0                      -> IMAGE_ROOTFS_ALIGNMENT         - reserved for bootstream (not partitioned)
-               #    IMAGE_ROOTFS_ALIGNMENT -> BOOT_SPACE                     - kernel and other data
+               #    0                      -> 1024                           - Unused (not partitioned)
+               #    1024                   -> BOOT_SPACE                     - kernel and other data (bootstream)
                #    BOOT_SPACE             -> SDIMG_SIZE                     - rootfs
                #
-               #                                                     Default Free space = 1.3x
-               #                                                     Use IMAGE_OVERHEAD_FACTOR to add more space
-               #                                                     <--------->
-               #            4MiB               8MiB           SDIMG_ROOTFS                    4KiB
-               # <-----------------------> <----------> <----------------------> <------------------------------>
-               #  ------------------------ ------------ ------------------------ -------------------------------
-               # | IMAGE_ROOTFS_ALIGNMENT | BOOT_SPACE | ROOTFS_SIZE            |     IMAGE_ROOTFS_ALIGNMENT    |
-               #  ------------------------ ------------ ------------------------ -------------------------------
-               # ^                        ^            ^                        ^                               ^
-               # |                        |            |                        |                               |
-               # 0                      4096     4MiB +  8MiB       4MiB +  8Mib + SDIMG_ROOTFS   4MiB +  8MiB + SDIMG_ROOTFS + 4MiB
-               parted -s ${SDCARD} unit KiB mkpart primary ${IMAGE_ROOTFS_ALIGNMENT} $(expr ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED})
-               parted -s ${SDCARD} unit KiB mkpart primary $(expr  ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED}) $(expr ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED} \+ $ROOTFS_SIZE)
+               #                                     Default Free space = 1.3x
+               #                                     Use IMAGE_OVERHEAD_FACTOR to add more space
+               #                                     <--------->
+               #    1024        8MiB          SDIMG_ROOTFS                    4MiB
+               # <-------> <----------> <----------------------> <------------------------------>
+               #  --------------------- ------------------------ -------------------------------
+               # | Unused | BOOT_SPACE | ROOTFS_SIZE            |     IMAGE_ROOTFS_ALIGNMENT    |
+               #  --------------------- ------------------------ -------------------------------
+               # ^        ^            ^                        ^                               ^
+               # |        |            |                        |                               |
+               # 0      1024      1024 + 8MiB       1024 + 8Mib + SDIMG_ROOTFS      1024 + 8MiB + SDIMG_ROOTFS + 4MiB
+               parted -s ${SDCARD} unit KiB mkpart primary 1024 $(expr ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED})
+               parted -s ${SDCARD} unit KiB mkpart primary $(expr ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED}) $(expr ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED} \+ $ROOTFS_SIZE)
 
                # Empty 4 bytes from boot partition
                dd if=/dev/zero of=${SDCARD} conv=notrunc seek=2048 count=4