Commit b2c2f303 authored by Jie Zhang's avatar Jie Zhang Committed by Bryan Wu
Browse files

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



Allow user space to access L2 SRAM.

Signed-off-by: default avatarJie Zhang <jie.zhang@analog.com>
Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
parent 72edff8d

arch/blackfin/kernel/process.c

+6 −1
Original line number Diff line number Diff line
@@ -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;

}

arch/blackfin/mm/sram-alloc.c

+4 −4
Original line number Diff line number Diff line
@@ -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;

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