test/py: Update u_boot_utils.find_ram_base to bypass the low 2MiB memory
On some RISC-V targets the low memory is protected that prevents
S-mode U-Boot from access.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/test/py/u_boot_utils.py b/test/py/u_boot_utils.py
index bf2a0fc..939d82e 100644
--- a/test/py/u_boot_utils.py
+++ b/test/py/u_boot_utils.py
@@ -237,10 +237,11 @@
raise Exception('Failed to find RAM bank start in `bdinfo`')
# We don't want ram_base to be zero as some functions test if the given
- # address is NULL (0). Let's add 2MiB then (size of an ARM LPAE/v8 section).
+ # address is NULL (0). Besides, on some RISC-V targets the low memory
+ # is protected that prevents S-mode U-Boot from access.
+ # Let's add 2MiB then (size of an ARM LPAE/v8 section).
- if ram_base == 0:
- ram_base += 1024 * 1024 * 2
+ ram_base += 1024 * 1024 * 2
return ram_base