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/* SPDX-License-Identifier: GPL-2.0-only */ /* * imr.h: Isolated Memory Region API * * Copyright(c) 2013 Intel Corporation. * Copyright(c) 2015 Bryan O'Donoghue <pure.logic@nexus-software.ie> */ #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); int imr_remove_range(phys_addr_t base, size_t size); #endif /* _IMR_H */