diff options
Diffstat (limited to 'kexec/kexec-iomem.c')
| -rw-r--r-- | kexec/kexec-iomem.c | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/kexec/kexec-iomem.c b/kexec/kexec-iomem.c index 6ae4fe4..2497b79 100644 --- a/kexec/kexec-iomem.c +++ b/kexec/kexec-iomem.c @@ -15,12 +15,14 @@ /* * kexec_iomem_for_each_line() * - * Iterate over each line in /proc/iomem. If match is NULL or if the line - * matches with our match-pattern then call the callback if non-NULL. + * Iterate over each line in the file returned by proc_iomem(). If match is + * NULL or if the line matches with our match-pattern then call the + * callback if non-NULL. + * * Return the number of lines matched. */ -int kexec_iomem_for_each_line(char *match, +int kexec_iomem_for_each_line(char *match, int machine, int (*callback)(void *data, int nr, char *str, @@ -28,7 +30,7 @@ int kexec_iomem_for_each_line(char *match, unsigned long length), void *data) { - const char iomem[]= "/proc/iomem"; + const char *iomem = proc_iomem(machine); char line[MAX_LINE]; FILE *fp; unsigned long long start, end, size; @@ -39,7 +41,7 @@ int kexec_iomem_for_each_line(char *match, fp = fopen(iomem, "r"); if (!fp) - die("Cannot open /proc/iomem"); + die("Cannot open %s\n", iomem); while(fgets(line, sizeof(line), fp) != 0) { count = sscanf(line, "%Lx-%Lx : %n", &start, &end, &consumed); @@ -76,15 +78,15 @@ static int kexec_iomem_single_callback(void *data, int nr, return 0; } -int parse_iomem_single(char *str, uint64_t *start, uint64_t *end) +int parse_iomem_single(char *str, int machine, uint64_t *start, uint64_t *end) { struct memory_range range; int ret; memset(&range, 0, sizeof(range)); - ret = kexec_iomem_for_each_line(str, kexec_iomem_single_callback, - &range); + ret = kexec_iomem_for_each_line(str, machine, + kexec_iomem_single_callback, &range); if (ret == 1) { if (start) @@ -99,3 +101,16 @@ int parse_iomem_single(char *str, uint64_t *start, uint64_t *end) return ret; } + +static const char proc_iomem_str[]= "/proc/iomem"; + +/* + * Allow an architecture specific implementation of this + * function to override the location of a file looking a lot + * like /proc/iomem + */ +const char * __attribute__((weak)) proc_iomem(int machine) +{ + return proc_iomem_str; +} + |