Blackfin arch: fix bug - shared lib function in L2 failed be called
authorJie Zhang <jie.zhang@analog.com>
Tue, 28 Oct 2008 07:57:49 +0000 (15:57 +0800)
committerBryan Wu <cooloney@kernel.org>
Tue, 28 Oct 2008 07:57:49 +0000 (15:57 +0800)
Allow user space to access L2 SRAM.

Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
arch/blackfin/kernel/process.c
arch/blackfin/mm/sram-alloc.c

index 77800dd83e578d49844edaceaec7fc4f3bcfe728..0c3ea118b657563f6486d6b2554180d1db0c2886 100644 (file)
@@ -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;
 }
index 0f1ca6930c16bc651529c814a1727694943b5f78..cc6f336e7313b483f1b9b98af708e043409c31ce 100644 (file)
@@ -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;