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-rw-r--r--board/sandbox/README.sandbox3
1 files changed, 3 insertions, 0 deletions
diff --git a/board/sandbox/README.sandbox b/board/sandbox/README.sandbox
index 9fe3bf1..ed820d3 100644
--- a/board/sandbox/README.sandbox
+++ b/board/sandbox/README.sandbox
@@ -44,6 +44,9 @@ Note:
make sandbox_defconfig all NO_SDL=1
./u-boot
+ If you are building on a 32-bit machine you may get errors from __ffs.h
+ about shifting more than the machine word size. Edit the config file
+ include/configs/sandbox.h and change CONFIG_SANDBOX_BITS_PER_LONG to 32.
U-Boot will start on your computer, showing a sandbox emulation of the serial
console: