From f7e989ab64f926e34bafea0752431e1fd6a618f3 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier.adi@gmail.com>
Date: Thu, 5 Mar 2009 17:33:36 +0800
Subject: Blackfin arch: make sure people do not set the kernel load address
 too high

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
---
 arch/blackfin/mach-common/arch_checks.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'arch/blackfin/mach-common/arch_checks.c')

diff --git a/arch/blackfin/mach-common/arch_checks.c b/arch/blackfin/mach-common/arch_checks.c
index 98133b9..b3a2e3f 100644
--- 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
-- 
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