Blackfin arch: Extend sram malloc to handle L2 SRAM.
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>
diff --git a/include/asm-blackfin/bfin-global.h b/include/asm-blackfin/bfin-global.h
index 7603383..320aa5e 100644
--- a/include/asm-blackfin/bfin-global.h
+++ b/include/asm-blackfin/bfin-global.h
@@ -92,16 +92,20 @@
extern void *l1_inst_sram_alloc(size_t);
extern void *l1_data_sram_alloc(size_t);
extern void *l1_data_sram_zalloc(size_t);
+extern void *l2_sram_alloc(size_t);
+extern void *l2_sram_zalloc(size_t);
extern int l1_data_A_sram_free(const void*);
extern int l1_data_B_sram_free(const void*);
extern int l1_inst_sram_free(const void*);
extern int l1_data_sram_free(const void*);
+extern int l2_sram_free(const void *);
extern int sram_free(const void*);
#define L1_INST_SRAM 0x00000001
#define L1_DATA_A_SRAM 0x00000002
#define L1_DATA_B_SRAM 0x00000004
#define L1_DATA_SRAM 0x00000006
+#define L2_SRAM 0x00000008
extern void *sram_alloc_with_lsl(size_t, unsigned long);
extern int sram_free_with_lsl(const void*);
@@ -114,7 +118,9 @@
extern unsigned long _ramstart, _ramend, _rambase;
extern unsigned long memory_start, memory_end, physical_mem_end;
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[], _ebss_b_l1[],
+ _stext_l2[], _etext_l2[], _sdata_l2[], _edata_l2[], _sbss_l2[],
+ _ebss_l2[], _l2_lma_start[];
#ifdef CONFIG_MTD_UCLINUX
extern unsigned long memory_mtd_start, memory_mtd_end, mtd_size;
diff --git a/include/asm-blackfin/elf.h b/include/asm-blackfin/elf.h
index 30303fc..67a03a8 100644
--- a/include/asm-blackfin/elf.h
+++ b/include/asm-blackfin/elf.h
@@ -15,6 +15,8 @@
#define EF_BFIN_FDPIC 0x00000002 /* -mfdpic */
#define EF_BFIN_CODE_IN_L1 0x00000010 /* --code-in-l1 */
#define EF_BFIN_DATA_IN_L1 0x00000020 /* --data-in-l1 */
+#define EF_BFIN_CODE_IN_L2 0x00000040 /* --code-in-l2 */
+#define EF_BFIN_DATA_IN_L2 0x00000080 /* --data-in-l2 */
typedef unsigned long elf_greg_t;
diff --git a/include/asm-blackfin/module.h b/include/asm-blackfin/module.h
index 3c7ce16..e3128df 100644
--- a/include/asm-blackfin/module.h
+++ b/include/asm-blackfin/module.h
@@ -6,8 +6,6 @@
#define Elf_Shdr Elf32_Shdr
#define Elf_Sym Elf32_Sym
#define Elf_Ehdr Elf32_Ehdr
-#define FLG_CODE_IN_L1 0x10
-#define FLG_DATA_IN_L1 0x20
struct mod_arch_specific {
Elf_Shdr *text_l1;
@@ -15,5 +13,8 @@
Elf_Shdr *bss_a_l1;
Elf_Shdr *data_b_l1;
Elf_Shdr *bss_b_l1;
+ Elf_Shdr *text_l2;
+ Elf_Shdr *data_l2;
+ Elf_Shdr *bss_l2;
};
#endif /* _ASM_BFIN_MODULE_H */