diff options
Diffstat (limited to 'physmap.c')
| -rw-r--r-- | physmap.c | 21 |
1 files changed, 21 insertions, 0 deletions
@@ -69,12 +69,33 @@ void *sys_physmap(unsigned long phys_addr, size_t len) void physunmap(void *virt_addr, size_t len) { + if (len == 0) { + printf_debug("Not unmapping zero size at %p\n", virt_addr); + return; + } + munmap(virt_addr, len); } #endif void *physmap(const char *descr, unsigned long phys_addr, size_t len) { + if (len == 0) { + printf_debug("Not mapping %s, zero size at 0x%08lx\n", + descr, phys_addr); + return NULL; + } + + if ((getpagesize() - 1) & len) { + fprintf(stderr, "Mapping %s at 0x%08lx, unaligned size 0x%lx\n", + descr, phys_addr, (unsigned long)len); + } + + if ((getpagesize() - 1) & phys_addr) { + fprintf(stderr, "Mapping %s, 0x%lx bytes at unaligned 0x%08lx\n", + descr, (unsigned long)len, phys_addr); + } + void *virt_addr = sys_physmap(phys_addr, len); if (NULL == virt_addr) { |
