| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /* |
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| 3 | * Copyright 2007 Red Hat, Inc. |
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| 4 | * by Peter Jones <pjones@redhat.com> |
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| 5 | * Copyright 2007 IBM, Inc. |
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| 6 | * by Konrad Rzeszutek <konradr@linux.vnet.ibm.com> |
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| 7 | * Copyright 2008 |
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| 8 | * by Konrad Rzeszutek <ketuzsezr@darnok.org> |
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| 9 | * |
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| 10 | * This code exposes the iSCSI Boot Format Table to userland via sysfs. |
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| 11 | */ |
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| 12 | |
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| 13 | #ifndef ISCSI_IBFT_H |
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| 14 | #define ISCSI_IBFT_H |
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| 15 | |
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| 16 | #include <linux/types.h> |
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| 17 | |
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| 18 | /* |
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| 19 | * Physical location of iSCSI Boot Format Table. |
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| 20 | * If the value is 0 there is no iBFT on the machine. |
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| 21 | */ |
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| 22 | extern phys_addr_t ibft_phys_addr; |
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| 23 | |
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| 24 | #ifdef CONFIG_ISCSI_IBFT_FIND |
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| 25 | |
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| 26 | /* |
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| 27 | * Routine used to find and reserve the iSCSI Boot Format Table. The |
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| 28 | * physical address is set in the ibft_phys_addr variable. |
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| 29 | */ |
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| 30 | void reserve_ibft_region(void); |
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| 31 | |
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| 32 | /* |
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| 33 | * Physical bounds to search for the iSCSI Boot Format Table. |
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| 34 | */ |
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| 35 | #define IBFT_START 0x80000 /* 512kB */ |
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| 36 | #define IBFT_END 0x100000 /* 1MB */ |
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| 37 | |
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| 38 | #else |
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| 39 | static inline void reserve_ibft_region(void) {} |
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| 40 | #endif |
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| 41 | |
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| 42 | #endif /* ISCSI_IBFT_H */ |
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| 43 | |
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