Blackfin arch: make sure people do not set the kernel load address to…

…o high Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
git-mirror · Mar 5, 2009 · f7e989a · f7e989a
1 parent 7acab7a
commit f7e989a
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/arch/blackfin/mach-common/arch_checks.c b/arch/blackfin/mach-common/arch_checks.c
@@ -62,3 +62,8 @@
 #if (CONFIG_BOOT_LOAD & 0x3)
 # error "The kernel load address must be 4 byte aligned"
 #endif
+
+/* The entire kernel must be able to make a 24bit pcrel call to start of L1 */
+#if ((0xffffffff - L1_CODE_START + 1) + CONFIG_BOOT_LOAD) > 0x1000000
+# error "The kernel load address is too high; keep it below 10meg for safety"
+#endif