1 files changed, 60 insertions, 0 deletions

diff --git a/arch/x86/include/asm/imr.h b/arch/x86/include/asm/imr.h
new file mode 100644
index 000000000000..cd2ce4068441
--- /dev/null
+++ b/arch/x86/include/asm/imr.h
@@ -0,0 +1,60 @@
+/*
+ * imr.h: Isolated Memory Region API
+ *
+ * Copyright(c) 2013 Intel Corporation.
+ * Copyright(c) 2015 Bryan O'Donoghue <pure.logic@nexus-software.ie>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ */
+#ifndef _IMR_H
+#define _IMR_H
+
+#include <linux/types.h>
+
+/*
+ * IMR agent access mask bits
+ * See section 12.7.4.7 from quark-x1000-datasheet.pdf for register
+ * definitions.
+ */
+#define IMR_ESRAM_FLUSH         BIT(31)
+#define IMR_CPU_SNOOP           BIT(30)         /* Applicable only to write */
+#define IMR_RMU                 BIT(29)
+#define IMR_VC1_SAI_ID3         BIT(15)
+#define IMR_VC1_SAI_ID2         BIT(14)
+#define IMR_VC1_SAI_ID1         BIT(13)
+#define IMR_VC1_SAI_ID0         BIT(12)
+#define IMR_VC0_SAI_ID3         BIT(11)
+#define IMR_VC0_SAI_ID2         BIT(10)
+#define IMR_VC0_SAI_ID1         BIT(9)
+#define IMR_VC0_SAI_ID0         BIT(8)
+#define IMR_CPU_0               BIT(1)          /* SMM mode */
+#define IMR_CPU                 BIT(0)          /* Non SMM mode */
+#define IMR_ACCESS_NONE         0
+
+/*
+ * Read/Write access-all bits here include some reserved bits
+ * These are the values firmware uses and are accepted by hardware.
+ * The kernel defines read/write access-all in the same way as firmware
+ * in order to have a consistent and crisp definition across firmware,
+ * bootloader and kernel.
+ */
+#define IMR_READ_ACCESS_ALL     0xBFFFFFFF
+#define IMR_WRITE_ACCESS_ALL    0xFFFFFFFF
+
+/* Number of IMRs provided by Quark X1000 SoC */
+#define QUARK_X1000_IMR_MAX     0x08
+#define QUARK_X1000_IMR_REGBASE 0x40
+
+/* IMR alignment bits - only bits 31:10 are checked for IMR validity */
+#define IMR_ALIGN               0x400
+#define IMR_MASK                (IMR_ALIGN - 1)
+
+int imr_add_range(phys_addr_t base, size_t size,
+                  unsigned int rmask, unsigned int wmask, bool lock);
+
+int imr_remove_range(phys_addr_t base, size_t size);
+
+#endif /* _IMR_H */