diff options
| author | Simon Glass <sjg@chromium.org> | 2016-07-22 09:22:45 -0600 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-07-25 12:05:53 -0400 |
| commit | 5923c843ba0e06a90e0c0c5cc6894ac8641377e1 (patch) | |
| tree | dbd9f504d4923087eb9efa43922050291d95035c | |
| parent | 713fb2dcb24537073171fc84528044a3ba081817 (diff) | |
sandbox: Add instructions about building on 32-bit machines
Sandbox is built with 64-bit ints by default. This doesn't work properly on
32-bit machines.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
| -rw-r--r-- | board/sandbox/README.sandbox | 3 | ||||
| -rw-r--r-- | include/configs/sandbox.h | 5 |
2 files changed, 7 insertions, 1 deletions
diff --git a/board/sandbox/README.sandbox b/board/sandbox/README.sandbox index 9fe3bf171a..ed820d338e 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: diff --git a/include/configs/sandbox.h b/include/configs/sandbox.h index 4de89f8879..197d8bb8ca 100644 --- a/include/configs/sandbox.h +++ b/include/configs/sandbox.h @@ -27,7 +27,10 @@ #define CONFIG_SYS_STDIO_DEREGISTER -/* Number of bits in a C 'long' on this architecture */ +/* + * Number of bits in a C 'long' on this architecture. Set this to 32 when + * building on a 32-bit machine. + */ #define CONFIG_SANDBOX_BITS_PER_LONG 64 #define CONFIG_LMB |