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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>
This commit is contained in:
Bin Meng 2020-03-28 07:25:28 -07:00 committed by Tom Rini
parent a379d330a9
commit b2c2608161
1 changed files with 4 additions and 3 deletions
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7
test/py/u_boot_utils.py
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@ -237,10 +237,11 @@ def find_ram_base(u_boot_console):
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