51 lines
1.0 KiB
C
51 lines
1.0 KiB
C
/* intelmetool */
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "mmap.h"
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#include <errno.h>
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#include <string.h>
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#ifndef __DARWIN__
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int fd_mem;
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void *map_physical_exact(off_t phys_addr, void *mapto, size_t len)
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{
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void *virt_addr;
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int err;
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virt_addr = mmap(mapto, len, PROT_WRITE | PROT_READ,
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MAP_SHARED | MAP_FIXED, fd_mem, phys_addr);
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if (virt_addr == MAP_FAILED) {
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err = errno;
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printf("Error mapping physical memory 0x%016jd [0x%zx] ERRNO=%d %s\n",
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(intmax_t)phys_addr, len, err, strerror(err));
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return NULL;
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}
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return virt_addr;
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}
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void *map_physical(off_t phys_addr, size_t len)
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{
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void *virt_addr;
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int err;
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virt_addr = mmap(NULL, len, PROT_WRITE | PROT_READ, MAP_SHARED, fd_mem, phys_addr);
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if (virt_addr == MAP_FAILED) {
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err = errno;
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printf("Error mapping physical memory 0x%016jd [0x%zx] ERRNO=%d %s\n",
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(intmax_t)phys_addr, len, err, strerror(err));
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return NULL;
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}
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return virt_addr;
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}
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void unmap_physical(void *virt_addr, size_t len)
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{
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munmap(virt_addr, len);
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}
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#endif
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