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Diffstat (limited to 'arch/s390/include/asm/boot_data.h')
-rw-r--r--arch/s390/include/asm/boot_data.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/s390/include/asm/boot_data.h b/arch/s390/include/asm/boot_data.h
index f7eed27b3220..2cc35e968ff5 100644
--- a/arch/s390/include/asm/boot_data.h
+++ b/arch/s390/include/asm/boot_data.h
@@ -15,4 +15,17 @@ extern unsigned long ipl_cert_list_size;
extern unsigned long early_ipl_comp_list_addr;
extern unsigned long early_ipl_comp_list_size;
+extern char boot_rb[PAGE_SIZE * 2];
+extern size_t boot_rb_off;
+
+#define boot_rb_foreach(cb) \
+ do { \
+ size_t off = boot_rb_off + strlen(boot_rb + boot_rb_off) + 1; \
+ size_t len; \
+ for (; off < sizeof(boot_rb) && (len = strlen(boot_rb + off)); off += len + 1) \
+ cb(boot_rb + off); \
+ for (off = 0; off < boot_rb_off && (len = strlen(boot_rb + off)); off += len + 1) \
+ cb(boot_rb + off); \
+ } while (0)
+
#endif /* _ASM_S390_BOOT_DATA_H */