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Diffstat (limited to 'arch/x86/include/asm/imr.h')
| -rw-r--r-- | arch/x86/include/asm/imr.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/arch/x86/include/asm/imr.h b/arch/x86/include/asm/imr.h new file mode 100644 index 000000000..0d1dbf235 --- /dev/null +++ b/arch/x86/include/asm/imr.h @@ -0,0 +1,56 @@ +/* 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 */ |