The boot_fdt_add_mem_rsv_regions() function reserves the memreserve and reserved-memory regions. These regions are being set with the LMB_NONE flag which allows overwriting and re-using the regions. This was fine earlier when the LMB memory map was local and not enforced globally. But that is no longer the case. Mark these regions as LMB_NOOVERWRITE so that they cannot be used.

Signed-off-by: Sughosh Ganu sughosh.ganu@linaro.org Reported-by: Vaishnav Achath vaishnav.a@ti.com --- boot/image-fdt.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/boot/image-fdt.c b/boot/image-fdt.c index 8eda521693d..9a1fa8840d7 100644 --- a/boot/image-fdt.c +++ b/boot/image-fdt.c @@ -110,7 +110,7 @@ void boot_fdt_add_mem_rsv_regions(void *fdt_blob) for (i = 0; i < total; i++) { if (fdt_get_mem_rsv(fdt_blob, i, &addr, &size) != 0) continue; - boot_fdt_reserve_region(addr, size, LMB_NONE); + boot_fdt_reserve_region(addr, size, LMB_NOOVERWRITE); }

/* process reserved-memory */ @@ -122,7 +122,7 @@ void boot_fdt_add_mem_rsv_regions(void *fdt_blob) ret = fdt_get_resource(fdt_blob, subnode, "reg", 0, &res); if (!ret && fdtdec_get_is_enabled(fdt_blob, subnode)) { - flags = LMB_NONE; + flags = LMB_NOOVERWRITE; if (fdtdec_get_bool(fdt_blob, subnode, "no-map")) flags = LMB_NOMAP;