From 354d17523f599746a84e5b22fa670c9910137947 Mon Sep 17 00:00:00 2001
From: Paul Sokolovsky
Date: Mon, 6 Jul 2015 00:08:33 +0300
Subject: modmachine: Implement physical memory access using /dev/mem (Linux,
 etc).

This requires root access. And on recent Linux kernels, with
CONFIG_STRICT_DEVMEM option enabled, only address ranges listed in
/proc/iomem can be accessed. The above compiled-time option can be
however overriden with boot-time option "iomem=relaxed".

This also removed separate read/write paths - there unlikely would
be a case when they're different.
---
 tests/extmod/machine_mem.py | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 tests/extmod/machine_mem.py

(limited to 'tests/extmod/machine_mem.py')

diff --git a/tests/extmod/machine_mem.py b/tests/extmod/machine_mem.py
new file mode 100644
index 000000000..7d8a9ac01
--- /dev/null
+++ b/tests/extmod/machine_mem.py
@@ -0,0 +1,16 @@
+# This test requires root privilege, so is usually skipped
+# It also assumes x86 legacy hardware (with Video BIOS present).
+
+try:
+    import machine
+except ImportError:
+    print("SKIP")
+    import sys
+    sys.exit()
+
+try:
+    print(hex(machine.mem16[0xc0000]))
+except OSError:
+    print("SKIP")
+    import sys
+    sys.exit()
-- 
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