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Tegra2 systems require a minimum vmalloc bootarg to successfully reserve the graphics carveout memory. If the vmalloc is insufficient a crash can result prior to any serial output reported. The minimum vmalloc is >= carveout size + framebuffer - 32MB, thus for a 256MB graphics carveout (with 10MB framebuffer), vmalloc>=234MB. This arg is not added in the u-boot configs to avoid tightly coupling the u-boot and kernel and is discussed in greater depth at http://gerrit.chromium.org/gerrit/#change,8293. BUG=chrome-os-partner:5197,chrome-os-partner:5902 TEST=Manually observe /proc/cmdline reflects change Change-Id: I66b35b266c7542771f2d4fc497dd4429587529f8 Reviewed-on: http://gerrit.chromium.org/gerrit/8373 Commit-Ready: Katie Roberts-Hoffman <katierh@chromium.org> Reviewed-by: Katie Roberts-Hoffman <katierh@chromium.org> Tested-by: Katie Roberts-Hoffman <katierh@chromium.org>
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