diff options
| -rw-r--r-- | arch/powerpc/kernel/machine_kexec.c | 36 | ||||
| -rw-r--r-- | arch/powerpc/kernel/machine_kexec_64.c | 56 |
2 files changed, 40 insertions, 52 deletions
diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c index 4f797c0b7148..b3abebb7ee64 100644 --- a/arch/powerpc/kernel/machine_kexec.c +++ b/arch/powerpc/kernel/machine_kexec.c | |||
| @@ -120,6 +120,7 @@ int overlaps_crashkernel(unsigned long start, unsigned long size) | |||
| 120 | 120 | ||
| 121 | /* Values we need to export to the second kernel via the device tree. */ | 121 | /* Values we need to export to the second kernel via the device tree. */ |
| 122 | static unsigned long kernel_end; | 122 | static unsigned long kernel_end; |
| 123 | static unsigned long crashk_size; | ||
| 123 | 124 | ||
| 124 | static struct property kernel_end_prop = { | 125 | static struct property kernel_end_prop = { |
| 125 | .name = "linux,kernel-end", | 126 | .name = "linux,kernel-end", |
| @@ -127,6 +128,39 @@ static struct property kernel_end_prop = { | |||
| 127 | .value = &kernel_end, | 128 | .value = &kernel_end, |
| 128 | }; | 129 | }; |
| 129 | 130 | ||
| 131 | static struct property crashk_base_prop = { | ||
| 132 | .name = "linux,crashkernel-base", | ||
| 133 | .length = sizeof(unsigned long), | ||
| 134 | .value = &crashk_res.start, | ||
| 135 | }; | ||
| 136 | |||
| 137 | static struct property crashk_size_prop = { | ||
| 138 | .name = "linux,crashkernel-size", | ||
| 139 | .length = sizeof(unsigned long), | ||
| 140 | .value = &crashk_size, | ||
| 141 | }; | ||
| 142 | |||
| 143 | static void __init export_crashk_values(struct device_node *node) | ||
| 144 | { | ||
| 145 | struct property *prop; | ||
| 146 | |||
| 147 | /* There might be existing crash kernel properties, but we can't | ||
| 148 | * be sure what's in them, so remove them. */ | ||
| 149 | prop = of_find_property(node, "linux,crashkernel-base", NULL); | ||
| 150 | if (prop) | ||
| 151 | prom_remove_property(node, prop); | ||
| 152 | |||
| 153 | prop = of_find_property(node, "linux,crashkernel-size", NULL); | ||
| 154 | if (prop) | ||
| 155 | prom_remove_property(node, prop); | ||
| 156 | |||
| 157 | if (crashk_res.start != 0) { | ||
| 158 | prom_add_property(node, &crashk_base_prop); | ||
| 159 | crashk_size = crashk_res.end - crashk_res.start + 1; | ||
| 160 | prom_add_property(node, &crashk_size_prop); | ||
| 161 | } | ||
| 162 | } | ||
| 163 | |||
| 130 | static int __init kexec_setup(void) | 164 | static int __init kexec_setup(void) |
| 131 | { | 165 | { |
| 132 | struct device_node *node; | 166 | struct device_node *node; |
| @@ -145,6 +179,8 @@ static int __init kexec_setup(void) | |||
| 145 | kernel_end = __pa(_end); | 179 | kernel_end = __pa(_end); |
| 146 | prom_add_property(node, &kernel_end_prop); | 180 | prom_add_property(node, &kernel_end_prop); |
| 147 | 181 | ||
| 182 | export_crashk_values(node); | ||
| 183 | |||
| 148 | of_node_put(node); | 184 | of_node_put(node); |
| 149 | return 0; | 185 | return 0; |
| 150 | } | 186 | } |
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c index a89bce834a51..49e705fcee6d 100644 --- a/arch/powerpc/kernel/machine_kexec_64.c +++ b/arch/powerpc/kernel/machine_kexec_64.c | |||
| @@ -303,18 +303,18 @@ static struct property htab_size_prop = { | |||
| 303 | .value = &htab_size_bytes, | 303 | .value = &htab_size_bytes, |
| 304 | }; | 304 | }; |
| 305 | 305 | ||
| 306 | static void __init export_htab_values(void) | 306 | static int __init export_htab_values(void) |
| 307 | { | 307 | { |
| 308 | struct device_node *node; | 308 | struct device_node *node; |
| 309 | struct property *prop; | 309 | struct property *prop; |
| 310 | 310 | ||
| 311 | /* On machines with no htab htab_address is NULL */ | 311 | /* On machines with no htab htab_address is NULL */ |
| 312 | if (!htab_address) | 312 | if (!htab_address) |
| 313 | return; | 313 | return -ENODEV; |
| 314 | 314 | ||
| 315 | node = of_find_node_by_path("/chosen"); | 315 | node = of_find_node_by_path("/chosen"); |
| 316 | if (!node) | 316 | if (!node) |
| 317 | return; | 317 | return -ENODEV; |
| 318 | 318 | ||
| 319 | /* remove any stale propertys so ours can be found */ | 319 | /* remove any stale propertys so ours can be found */ |
| 320 | prop = of_find_property(node, htab_base_prop.name, NULL); | 320 | prop = of_find_property(node, htab_base_prop.name, NULL); |
| @@ -329,54 +329,6 @@ static void __init export_htab_values(void) | |||
| 329 | prom_add_property(node, &htab_size_prop); | 329 | prom_add_property(node, &htab_size_prop); |
| 330 | 330 | ||
| 331 | of_node_put(node); | 331 | of_node_put(node); |
| 332 | } | ||
| 333 | |||
| 334 | static struct property crashk_base_prop = { | ||
| 335 | .name = "linux,crashkernel-base", | ||
| 336 | .length = sizeof(unsigned long), | ||
| 337 | .value = &crashk_res.start, | ||
| 338 | }; | ||
| 339 | |||
| 340 | static unsigned long crashk_size; | ||
| 341 | |||
| 342 | static struct property crashk_size_prop = { | ||
| 343 | .name = "linux,crashkernel-size", | ||
| 344 | .length = sizeof(unsigned long), | ||
| 345 | .value = &crashk_size, | ||
| 346 | }; | ||
| 347 | |||
| 348 | static void __init export_crashk_values(void) | ||
| 349 | { | ||
| 350 | struct device_node *node; | ||
| 351 | struct property *prop; | ||
| 352 | |||
| 353 | node = of_find_node_by_path("/chosen"); | ||
| 354 | if (!node) | ||
| 355 | return; | ||
| 356 | |||
| 357 | /* There might be existing crash kernel properties, but we can't | ||
| 358 | * be sure what's in them, so remove them. */ | ||
| 359 | prop = of_find_property(node, "linux,crashkernel-base", NULL); | ||
| 360 | if (prop) | ||
| 361 | prom_remove_property(node, prop); | ||
| 362 | |||
| 363 | prop = of_find_property(node, "linux,crashkernel-size", NULL); | ||
| 364 | if (prop) | ||
| 365 | prom_remove_property(node, prop); | ||
| 366 | |||
| 367 | if (crashk_res.start != 0) { | ||
| 368 | prom_add_property(node, &crashk_base_prop); | ||
| 369 | crashk_size = crashk_res.end - crashk_res.start + 1; | ||
| 370 | prom_add_property(node, &crashk_size_prop); | ||
| 371 | } | ||
| 372 | |||
| 373 | of_node_put(node); | ||
| 374 | } | ||
| 375 | |||
| 376 | static int __init kexec_setup(void) | ||
| 377 | { | ||
| 378 | export_htab_values(); | ||
| 379 | export_crashk_values(); | ||
| 380 | return 0; | 332 | return 0; |
| 381 | } | 333 | } |
| 382 | __initcall(kexec_setup); | 334 | late_initcall(export_htab_values); |
