diff options
Diffstat (limited to 'arch/powerpc/platforms/powernv/opal-fadump.c')
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal-fadump.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/opal-fadump.c b/arch/powerpc/platforms/powernv/opal-fadump.c index a89d3a0cccae..006648e4d5e6 100644 --- a/arch/powerpc/platforms/powernv/opal-fadump.c +++ b/arch/powerpc/platforms/powernv/opal-fadump.c @@ -9,6 +9,7 @@ #include <linux/string.h> #include <linux/seq_file.h> +#include <linux/of.h> #include <linux/of_fdt.h> #include <linux/libfdt.h> #include <linux/mm.h> @@ -262,6 +263,11 @@ static int opal_fadump_setup_metadata(struct fw_dump *fadump_conf) return err; } +static u64 opal_fadump_get_bootmem_min(void) +{ + return OPAL_FADUMP_MIN_BOOT_MEM; +} + static int opal_fadump_register(struct fw_dump *fadump_conf) { s64 rc = OPAL_PARAMETER; @@ -606,6 +612,7 @@ static struct fadump_ops opal_fadump_ops = { .fadump_init_mem_struct = opal_fadump_init_mem_struct, .fadump_get_metadata_size = opal_fadump_get_metadata_size, .fadump_setup_metadata = opal_fadump_setup_metadata, + .fadump_get_bootmem_min = opal_fadump_get_bootmem_min, .fadump_register = opal_fadump_register, .fadump_unregister = opal_fadump_unregister, .fadump_invalidate = opal_fadump_invalidate, @@ -620,9 +627,9 @@ void __init opal_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node) const __be32 *prop; unsigned long dn; u64 addr = 0; + int i, len; s64 ret; - /* * Check if Firmware-Assisted Dump is supported. if yes, check * if dump has been initiated on last reboot. @@ -638,6 +645,27 @@ void __init opal_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node) return; } + prop = of_get_flat_dt_prop(dn, "fw-load-area", &len); + if (prop) { + /* + * Each f/w load area is an (address,size) pair, + * 2 cells each, totalling 4 cells per range. + */ + for (i = 0; i < len / (sizeof(*prop) * 4); i++) { + u64 base, end; + + base = of_read_number(prop + (i * 4) + 0, 2); + end = base; + end += of_read_number(prop + (i * 4) + 2, 2); + if (end > OPAL_FADUMP_MIN_BOOT_MEM) { + pr_err("F/W load area: 0x%llx-0x%llx\n", + base, end); + pr_err("F/W version not supported!\n"); + return; + } + } + } + fadump_conf->ops = &opal_fadump_ops; fadump_conf->fadump_supported = 1; |