diff options
author | Graf Yang <graf.yang@analog.com> | 2009-01-07 23:14:39 +0800 |
---|---|---|
committer | Bryan Wu <cooloney@kernel.org> | 2009-01-07 23:14:39 +0800 |
commit | 46fa5eecec58934902ea4a65d9c7b7a486ac6f6b (patch) | |
tree | b7373553151456c620d9747785de322b30d11548 /arch/blackfin | |
parent | 8f65873e47784a390949f0d61e5692dbf2a8253e (diff) | |
download | linux-stable-46fa5eecec58934902ea4a65d9c7b7a486ac6f6b.tar.gz linux-stable-46fa5eecec58934902ea4a65d9c7b7a486ac6f6b.tar.bz2 linux-stable-46fa5eecec58934902ea4a65d9c7b7a486ac6f6b.zip |
Blackfin arch: SMP supporting patchset: some other misc code
Blackfin dual core BF561 processor can support SMP like features.
https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like
In this patch, we provide SMP extend to some other misc code
Singed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin')
-rw-r--r-- | arch/blackfin/Kconfig | 33 | ||||
-rw-r--r-- | arch/blackfin/kernel/vmlinux.lds.S | 4 | ||||
-rw-r--r-- | arch/blackfin/mach-bf518/include/mach/mem_map.h | 15 | ||||
-rw-r--r-- | arch/blackfin/mach-bf527/include/mach/mem_map.h | 15 | ||||
-rw-r--r-- | arch/blackfin/mach-bf533/include/mach/mem_map.h | 15 | ||||
-rw-r--r-- | arch/blackfin/mach-bf537/include/mach/mem_map.h | 15 | ||||
-rw-r--r-- | arch/blackfin/mach-bf538/include/mach/mem_map.h | 15 | ||||
-rw-r--r-- | arch/blackfin/mach-bf548/include/mach/mem_map.h | 15 |
8 files changed, 123 insertions, 4 deletions
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index 004c06ce3198..3a468436258d 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -200,6 +200,32 @@ config BF561 endchoice +config SMP + depends on BF561 + bool "Symmetric multi-processing support" + ---help--- + This enables support for systems with more than one CPU, + like the dual core BF561. If you have a system with only one + CPU, say N. If you have a system with more than one CPU, say Y. + + If you don't know what to do here, say N. + +config NR_CPUS + int + depends on SMP + default 2 if BF561 + +config IRQ_PER_CPU + bool + depends on SMP + default y + +config TICK_SOURCE_SYSTMR0 + bool + select BFIN_GPTIMERS + depends on SMP + default y + config BF_REV_MIN int default 0 if (BF51x || BF52x || BF54x) @@ -502,6 +528,7 @@ source kernel/Kconfig.hz config GENERIC_TIME bool "Generic time" + depends on !SMP default y config GENERIC_CLOCKEVENTS @@ -576,6 +603,7 @@ endmenu menu "Blackfin Kernel Optimizations" + depends on !SMP comment "Memory Optimizations" @@ -738,7 +766,6 @@ config BFIN_INS_LOWOVERHEAD endmenu - choice prompt "Kernel executes from" help @@ -804,9 +831,11 @@ config BFIN_ICACHE_LOCK choice prompt "Policy" depends on BFIN_DCACHE - default BFIN_WB + default BFIN_WB if !SMP + default BFIN_WT if SMP config BFIN_WB bool "Write back" + depends on !SMP help Write Back Policy: Cached data will be written back to SDRAM only when needed. diff --git a/arch/blackfin/kernel/vmlinux.lds.S b/arch/blackfin/kernel/vmlinux.lds.S index 7d12c6692a65..2a485352ec14 100644 --- a/arch/blackfin/kernel/vmlinux.lds.S +++ b/arch/blackfin/kernel/vmlinux.lds.S @@ -109,7 +109,7 @@ SECTIONS #endif DATA_DATA - *(.data.*) + *(.data) CONSTRUCTORS /* make sure the init_task is aligned to the @@ -161,6 +161,7 @@ SECTIONS *(.con_initcall.init) ___con_initcall_end = .; } + PERCPU(4) SECURITY_INIT .init.ramfs : { @@ -236,7 +237,6 @@ SECTIONS . = ALIGN(4); __ebss_l2 = .; } - /* Force trailing alignment of our init section so that when we * free our init memory, we don't leave behind a partial page. */ diff --git a/arch/blackfin/mach-bf518/include/mach/mem_map.h b/arch/blackfin/mach-bf518/include/mach/mem_map.h index 10f678f3c5c0..ac95d334d082 100644 --- a/arch/blackfin/mach-bf518/include/mach/mem_map.h +++ b/arch/blackfin/mach-bf518/include/mach/mem_map.h @@ -99,4 +99,19 @@ #define L1_SCRATCH_START 0xFFB00000 #define L1_SCRATCH_LENGTH 0x1000 +#define get_l1_scratch_start_cpu(cpu) L1_SCRATCH_START +#define get_l1_code_start_cpu(cpu) L1_CODE_START +#define get_l1_data_a_start_cpu(cpu) L1_DATA_A_START +#define get_l1_data_b_start_cpu(cpu) L1_DATA_B_START +#define get_l1_scratch_start() L1_SCRATCH_START +#define get_l1_code_start() L1_CODE_START +#define get_l1_data_a_start() L1_DATA_A_START +#define get_l1_data_b_start() L1_DATA_B_START + +#define GET_PDA_SAFE(preg) \ + preg.l = _cpu_pda; \ + preg.h = _cpu_pda; + +#define GET_PDA(preg, dreg) GET_PDA_SAFE(preg) + #endif /* _MEM_MAP_518_H_ */ diff --git a/arch/blackfin/mach-bf527/include/mach/mem_map.h b/arch/blackfin/mach-bf527/include/mach/mem_map.h index ef46dc991cd4..bd7fe0fda9e8 100644 --- a/arch/blackfin/mach-bf527/include/mach/mem_map.h +++ b/arch/blackfin/mach-bf527/include/mach/mem_map.h @@ -99,4 +99,19 @@ #define L1_SCRATCH_START 0xFFB00000 #define L1_SCRATCH_LENGTH 0x1000 +#define get_l1_scratch_start_cpu(cpu) L1_SCRATCH_START +#define get_l1_code_start_cpu(cpu) L1_CODE_START +#define get_l1_data_a_start_cpu(cpu) L1_DATA_A_START +#define get_l1_data_b_start_cpu(cpu) L1_DATA_B_START +#define get_l1_scratch_start() L1_SCRATCH_START +#define get_l1_code_start() L1_CODE_START +#define get_l1_data_a_start() L1_DATA_A_START +#define get_l1_data_b_start() L1_DATA_B_START + +#define GET_PDA_SAFE(preg) \ + preg.l = _cpu_pda; \ + preg.h = _cpu_pda; + +#define GET_PDA(preg, dreg) GET_PDA_SAFE(preg) + #endif /* _MEM_MAP_527_H_ */ diff --git a/arch/blackfin/mach-bf533/include/mach/mem_map.h b/arch/blackfin/mach-bf533/include/mach/mem_map.h index 581fc6eea789..d5eaef21edb7 100644 --- a/arch/blackfin/mach-bf533/include/mach/mem_map.h +++ b/arch/blackfin/mach-bf533/include/mach/mem_map.h @@ -168,4 +168,19 @@ #define L1_SCRATCH_START 0xFFB00000 #define L1_SCRATCH_LENGTH 0x1000 +#define get_l1_scratch_start_cpu(cpu) L1_SCRATCH_START +#define get_l1_code_start_cpu(cpu) L1_CODE_START +#define get_l1_data_a_start_cpu(cpu) L1_DATA_A_START +#define get_l1_data_b_start_cpu(cpu) L1_DATA_B_START +#define get_l1_scratch_start() L1_SCRATCH_START +#define get_l1_code_start() L1_CODE_START +#define get_l1_data_a_start() L1_DATA_A_START +#define get_l1_data_b_start() L1_DATA_B_START + +#define GET_PDA_SAFE(preg) \ + preg.l = _cpu_pda; \ + preg.h = _cpu_pda; + +#define GET_PDA(preg, dreg) GET_PDA_SAFE(preg) + #endif /* _MEM_MAP_533_H_ */ diff --git a/arch/blackfin/mach-bf537/include/mach/mem_map.h b/arch/blackfin/mach-bf537/include/mach/mem_map.h index 5078b669431f..be4de761be96 100644 --- a/arch/blackfin/mach-bf537/include/mach/mem_map.h +++ b/arch/blackfin/mach-bf537/include/mach/mem_map.h @@ -176,4 +176,19 @@ #define L1_SCRATCH_START 0xFFB00000 #define L1_SCRATCH_LENGTH 0x1000 +#define get_l1_scratch_start_cpu(cpu) L1_SCRATCH_START +#define get_l1_code_start_cpu(cpu) L1_CODE_START +#define get_l1_data_a_start_cpu(cpu) L1_DATA_A_START +#define get_l1_data_b_start_cpu(cpu) L1_DATA_B_START +#define get_l1_scratch_start() L1_SCRATCH_START +#define get_l1_code_start() L1_CODE_START +#define get_l1_data_a_start() L1_DATA_A_START +#define get_l1_data_b_start() L1_DATA_B_START + +#define GET_PDA_SAFE(preg) \ + preg.l = _cpu_pda; \ + preg.h = _cpu_pda; + +#define GET_PDA(preg, dreg) GET_PDA_SAFE(preg) + #endif /* _MEM_MAP_537_H_ */ diff --git a/arch/blackfin/mach-bf538/include/mach/mem_map.h b/arch/blackfin/mach-bf538/include/mach/mem_map.h index d65d4301615a..c134057c91ff 100644 --- a/arch/blackfin/mach-bf538/include/mach/mem_map.h +++ b/arch/blackfin/mach-bf538/include/mach/mem_map.h @@ -104,4 +104,19 @@ #define L1_SCRATCH_START 0xFFB00000 #define L1_SCRATCH_LENGTH 0x1000 +#define get_l1_scratch_start_cpu(cpu) L1_SCRATCH_START +#define get_l1_code_start_cpu(cpu) L1_CODE_START +#define get_l1_data_a_start_cpu(cpu) L1_DATA_A_START +#define get_l1_data_b_start_cpu(cpu) L1_DATA_B_START +#define get_l1_scratch_start() L1_SCRATCH_START +#define get_l1_code_start() L1_CODE_START +#define get_l1_data_a_start() L1_DATA_A_START +#define get_l1_data_b_start() L1_DATA_B_START + +#define GET_PDA_SAFE(preg) \ + preg.l = _cpu_pda; \ + preg.h = _cpu_pda; + +#define GET_PDA(preg, dreg) GET_PDA_SAFE(preg) + #endif /* _MEM_MAP_538_H_ */ diff --git a/arch/blackfin/mach-bf548/include/mach/mem_map.h b/arch/blackfin/mach-bf548/include/mach/mem_map.h index a2228428dc06..361eb0e85bc0 100644 --- a/arch/blackfin/mach-bf548/include/mach/mem_map.h +++ b/arch/blackfin/mach-bf548/include/mach/mem_map.h @@ -108,4 +108,19 @@ #define L1_SCRATCH_START 0xFFB00000 #define L1_SCRATCH_LENGTH 0x1000 +#define get_l1_scratch_start_cpu(cpu) L1_SCRATCH_START +#define get_l1_code_start_cpu(cpu) L1_CODE_START +#define get_l1_data_a_start_cpu(cpu) L1_DATA_A_START +#define get_l1_data_b_start_cpu(cpu) L1_DATA_B_START +#define get_l1_scratch_start() L1_SCRATCH_START +#define get_l1_code_start() L1_CODE_START +#define get_l1_data_a_start() L1_DATA_A_START +#define get_l1_data_b_start() L1_DATA_B_START + +#define GET_PDA_SAFE(preg) \ + preg.l = _cpu_pda; \ + preg.h = _cpu_pda; + +#define GET_PDA(preg, dreg) GET_PDA_SAFE(preg) + #endif/* _MEM_MAP_548_H_ */ |