[PATCH 2/2] tools: k3_fit_atf: Change DM load address to avoid conflict

Nishanth Menon nm at ti.com
Tue Aug 31 20:20:49 CEST 2021


DM binary is expected to be an elf file. The expected address of
this elf is in the range of 0xa000_0000 in DDR. In the current
configuration, elf file is loaded to the exact same address and we
invoke load_elf_image_phdr to decode and memcpy sections of the elf to
the same address range, we are eventually going to overwrite sections
of the original elf image itself corrupting the DM firmware as a
result.

To prevent this, we must load the DM section to an address that does'nt
overlap with the actual section address where it will eventually be
copied to.

Lets add an offset of 256MB to a lesser used DDR address, yet within
the typical 1GB address space.

We may need to consider going for a configuration option if this is
turning to be a limitation (boards with lesser DDR space).

Signed-off-by: Nishanth Menon <nm at ti.com>
---
 tools/k3_fit_atf.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/k3_fit_atf.sh b/tools/k3_fit_atf.sh
index 3a476ced98b1..6469f188e8ff 100755
--- a/tools/k3_fit_atf.sh
+++ b/tools/k3_fit_atf.sh
@@ -67,8 +67,8 @@ cat << __HEADER_EOF
 			arch = "arm32";
 			compression = "none";
 			os = "DM";
-			load = <0xa0000000>;
-			entry = <0xa0000000>;
+			load = <0xb0000000>;
+			entry = <0xb0000000>;
 		};
 		spl {
 			description = "SPL (64-bit)";
-- 
2.32.0



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