arm: firmware: Check firmware is running or not

PATCH New Kyungmin Park 1 participant 1 message Oct 22, 2013 Arm (32-bit)

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Kyungmin Park

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2013-10-22 01:45 UTC #0 lore raw

PATCH 1/1 arm: firmware: Check firmware is running or not

From: Kyungmin Park <[email protected]>

To support multi-platform, it needs to know it's running under secure OS or not. sometime it needs to access physical address by smc calls.

e.g.,

	if (firmware_run()) {
		addr = physical address;
	} else {
		addr = virtual address;
	}

	call_firmware_ops(read_address, addr, &value);

Signed-off-by Kyungmin Park <[email protected]>

---

arch/arm/common/firmware.c +5 -0

index 27ddccb..e9d9ee5 100644
@@ -16,3 +16,8 @@
 static const struct firmware_ops default_firmware_ops;
 
 const struct firmware_ops *firmware_ops = &default_firmware_ops;
+
+int firmware_run(void)
+{
+	return firmware_ops != &default_firmware_ops;
+}

arch/arm/include/asm/firmware.h +3 -0

index 1563130..efc4554 100644
@@ -42,6 +42,9 @@ struct firmware_ops {
 /* Global pointer for current firmware_ops structure, can't be NULL. */
 extern const struct firmware_ops *firmware_ops;
 
+/* Check firmware is running */
+extern int firmware_run(void);
+
 /*
  * call_firmware_op(op, ...)
  *