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* imr.h: Isolated Memory Region API
* Copyright(c) 2013 Intel Corporation.
* Copyright(c) 2015 Bryan O'Donoghue <>
* 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 from quark-x1000-datasheet.pdf for register
* definitions.
#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 */
* 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.
/* 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);
int imr_remove_range(phys_addr_t base, size_t size);
#endif /* _IMR_H */