Blackfin arch: fix bug - shared lib function in L2 failed be called

Allow user space to access L2 SRAM. Signed-off-by: Jie Zhang <jie.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
git-mirror · Oct 28, 2008 · b2c2f30 · b2c2f30
1 parent 72edff8
commit b2c2f30
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Showing 2 changed files with 10 additions and 5 deletions.
diff --git a/arch/blackfin/kernel/process.c b/arch/blackfin/kernel/process.c
@@ -351,9 +351,14 @@ int _access_ok(unsigned long addr, unsigned long size)
 		return 1;
 #endif
 #if L1_DATA_B_LENGTH != 0
-	if (addr >= L1_DATA_B_START
+	if (addr >= L1_DATA_B_START + (_ebss_b_l1 - _sdata_b_l1)
 	    && addr + size <= L1_DATA_B_START + L1_DATA_B_LENGTH)
 		return 1;
+#endif
+#if L2_LENGTH != 0
+	if (addr >= L2_START + (_ebss_l2 - _stext_l2)
+	    && addr + size <= L2_START + L2_LENGTH)
+		return 1;
 #endif
 	return 0;
 }

diff --git a/arch/blackfin/mm/sram-alloc.c b/arch/blackfin/mm/sram-alloc.c
@@ -183,10 +183,10 @@ static void __init l2_sram_init(void)
 		return;
 	}
 
-	free_l2_sram_head.next->paddr = (void *)L2_START +
-		(_etext_l2 - _stext_l2) + (_edata_l2 - _sdata_l2);
-	free_l2_sram_head.next->size = L2_LENGTH -
-		(_etext_l2 - _stext_l2) + (_edata_l2 - _sdata_l2);
+	free_l2_sram_head.next->paddr =
+		(void *)L2_START + (_ebss_l2 - _stext_l2);
+	free_l2_sram_head.next->size =
+		L2_LENGTH - (_ebss_l2 - _stext_l2);
 	free_l2_sram_head.next->pid = 0;
 	free_l2_sram_head.next->next = NULL;