On Thursday 10 November 2011 21:17:54 Stephen Warren wrote: > bootm_load_os() detects when it writes the decompressed image over > the top of the compressed image. If this happens, the original image > is corrupted. When the original image is a multi-component legacy image, > or a (potentially multi-component) FIT image, this implies that other > components may be corrupted. In turn, this means that booting is unlikely > to be successful. > > However, in the case of no image compresssion coupled with an image with > load address equal to where the image is already located (e.g. an XIP > kernel, or IH_TYPE_KERNEL_ANYLOAD), there has been no copy and hence no > corruption, no matter whether it's a single-component legacy image, a > multi-component legacy image, or a FIT image. In this case, disable the > overlap detection, and allow boot to continue. > > Without this change, when booting a single-component legacy image that > contains an IH_TYPE_KERNEL_ANYLOAD, bootm_load_os() would have returned > BOOTM_ERR_OVERLAP, but the caller ignores this, and boot continues and > succeeds. Now, the false error is no longer even returned. > > Without this change, when booting a FIT image that contains an > IH_TYPE_KERNEL_ANYLOAD, bootm_load_os() would have returned > BOOTM_ERR_OVERLAP, which would then cause the caller to reset the board. > Now, the false error is no longer returned, and boot succeeds. > > Signed-off-by: Stephen Warren <swar...@nvidia.com>
Applied (after fixing a small merge conflict) to u-boot-staging/s...@denx.de. Thanks. Best regards, Stefan -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: off...@denx.de _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
