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Blackfin arch: don't copy bss when copying L1 

when copying L1 regions, go to the start of bss rather
than end since we have code to zero it out already

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
This commit is contained in:
Mike Frysinger 2008-10-27 18:21:43 +08:00 committed by Bryan Wu
parent 6776cf4476
commit 3b1f26a50a
2 changed files with 6 additions and 6 deletions
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2
arch/blackfin/include/asm/bfin-global.h
View File

@ -101,7 +101,7 @@ extern u16 _bfin_swrst; /* shadow for Software Reset Register (SWRST) */
extern unsigned long _ramstart, _ramend, _rambase; extern unsigned long _ramstart, _ramend, _rambase;
extern unsigned long memory_start, memory_end, physical_mem_end; extern unsigned long memory_start, memory_end, physical_mem_end;
extern char _stext_l1[], _etext_l1[], _sdata_l1[], _edata_l1[], _sbss_l1[], extern char _stext_l1[], _etext_l1[], _sdata_l1[], _edata_l1[], _sbss_l1[],
_ebss_l1[], _l1_lma_start[], _sdata_b_l1[], _ebss_b_l1[], _ebss_l1[], _l1_lma_start[], _sdata_b_l1[], _sbss_b_l1[], _ebss_b_l1[],
_stext_l2[], _etext_l2[], _sdata_l2[], _edata_l2[], _sbss_l2[], _stext_l2[], _etext_l2[], _sdata_l2[], _edata_l2[], _sbss_l2[],
_ebss_l2[], _l2_lma_start[]; _ebss_l2[], _l2_lma_start[];

10
arch/blackfin/kernel/setup.c
View File

@ -119,23 +119,23 @@ void __init bfin_relocate_l1_mem(void)
/* Copy _stext_l1 to _etext_l1 to L1 instruction SRAM */ /* Copy _stext_l1 to _etext_l1 to L1 instruction SRAM */
dma_memcpy(_stext_l1, _l1_lma_start, l1_code_length); dma_memcpy(_stext_l1, _l1_lma_start, l1_code_length);
l1_data_a_length = _ebss_l1 - _sdata_l1; l1_data_a_length = _sbss_l1 - _sdata_l1;
if (l1_data_a_length > L1_DATA_A_LENGTH) if (l1_data_a_length > L1_DATA_A_LENGTH)
panic("L1 Data SRAM Bank A Overflow\n"); panic("L1 Data SRAM Bank A Overflow\n");
/* Copy _sdata_l1 to _ebss_l1 to L1 data bank A SRAM */ /* Copy _sdata_l1 to _sbss_l1 to L1 data bank A SRAM */
dma_memcpy(_sdata_l1, _l1_lma_start + l1_code_length, l1_data_a_length); dma_memcpy(_sdata_l1, _l1_lma_start + l1_code_length, l1_data_a_length);
l1_data_b_length = _ebss_b_l1 - _sdata_b_l1; l1_data_b_length = _sbss_b_l1 - _sdata_b_l1;
if (l1_data_b_length > L1_DATA_B_LENGTH) if (l1_data_b_length > L1_DATA_B_LENGTH)
panic("L1 Data SRAM Bank B Overflow\n"); panic("L1 Data SRAM Bank B Overflow\n");
/* Copy _sdata_b_l1 to _ebss_b_l1 to L1 data bank B SRAM */ /* Copy _sdata_b_l1 to _sbss_b_l1 to L1 data bank B SRAM */
dma_memcpy(_sdata_b_l1, _l1_lma_start + l1_code_length + dma_memcpy(_sdata_b_l1, _l1_lma_start + l1_code_length +
l1_data_a_length, l1_data_b_length); l1_data_a_length, l1_data_b_length);
if (L2_LENGTH != 0) { if (L2_LENGTH != 0) {
l2_length = _ebss_l2 - _stext_l2; l2_length = _sbss_l2 - _stext_l2;
if (l2_length > L2_LENGTH) if (l2_length > L2_LENGTH)
panic("L2 SRAM Overflow\n"); panic("L2 SRAM Overflow\n");