Commit 46fa5eec authored by Graf Yang's avatar Graf Yang Committed by Bryan Wu

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: default avatarGraf Yang <graf.yang@analog.com>
Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
parent 8f65873e
......@@ -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.
......
......@@ -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.
*/
......
......@@ -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_ */
......@@ -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_ */
......@@ -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_ */
......@@ -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_ */
......@@ -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_ */
......@@ -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_ */
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