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Blackfin arch: Extend sram malloc to handle L2 SRAM.

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Extend system call to alloc L2 SRAM in application.
Automatically move following sections to L2 SRAM:
1. kernel built-in l2 attribute section
2. kernel module l2 attribute section
3. elf-fdpic application l2 attribute section

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
This commit is contained in:
Sonic Zhang
2008-07-19 15:42:41 +08:00
committed by Bryan Wu
parent bafcc1b973
commit 262c3825a9
7 changed files with 253 additions and 56 deletions
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10
arch/blackfin/kernel/setup.c
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@ -104,6 +104,7 @@ void __init bf53x_relocate_l1_mem(void)
unsigned long l1_code_length;
unsigned long l1_data_a_length;
unsigned long l1_data_b_length;
unsigned long l2_length;
l1_code_length = _etext_l1 - _stext_l1;
if (l1_code_length > L1_CODE_LENGTH)
@ -129,6 +130,15 @@ void __init bf53x_relocate_l1_mem(void)
/* Copy _sdata_b_l1 to _ebss_b_l1 to L1 data bank B SRAM */
dma_memcpy(_sdata_b_l1, _l1_lma_start + l1_code_length +
l1_data_a_length, l1_data_b_length);
#ifdef L2_LENGTH
l2_length = _ebss_l2 - _stext_l2;
if (l2_length > L2_LENGTH)
panic("L2 SRAM Overflow\n");
/* Copy _stext_l2 to _edata_l2 to L2 SRAM */
dma_memcpy(_stext_l2, _l2_lma_start, l2_length);
#endif
}
/* add_memory_region to memmap */