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| author | Huacai Chen <chenhc@lemote.com> | 2014-11-04 14:13:26 +0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-11-24 07:45:01 +0100 |
| commit | ec0f8d3fbb7ea12cfd10083e340381b96e7c34f8 (patch) | |
| tree | 9550596fd52cccb8b7026c7135553255ddb0313d /arch/mips/include/asm | |
| parent | f490682a6b21ffed5acd7a0d49d8371e5e625d7a (diff) | |
| download | blackbird-obmc-linux-ec0f8d3fbb7ea12cfd10083e340381b96e7c34f8.tar.gz blackbird-obmc-linux-ec0f8d3fbb7ea12cfd10083e340381b96e7c34f8.zip | |
MIPS: Loongson: Allow booting from any core
By offering Logical->Physical core id mapping, so as to reserve some
physical cores via mask. This allow booting from any core when core-0
has problems. Since the maximun cores supported by Loongson-3 is 16,
32-bit cpu_startup_core_id can be split to 16-bit cpu_startup_core_id
and 16-bit reserved_cores_mask for compatibility.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/8323/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm')
| -rw-r--r-- | arch/mips/include/asm/mach-loongson/boot_param.h | 5 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-loongson/irq.h | 3 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-loongson/topology.h | 2 |
3 files changed, 6 insertions, 4 deletions
diff --git a/arch/mips/include/asm/mach-loongson/boot_param.h b/arch/mips/include/asm/mach-loongson/boot_param.h index 3388fc53599e..11ebf4ca2b41 100644 --- a/arch/mips/include/asm/mach-loongson/boot_param.h +++ b/arch/mips/include/asm/mach-loongson/boot_param.h @@ -42,7 +42,8 @@ struct efi_cpuinfo_loongson { u32 processor_id; /* PRID, e.g. 6305, 6306 */ u32 cputype; /* Loongson_3A/3B, etc. */ u32 total_node; /* num of total numa nodes */ - u32 cpu_startup_core_id; /* Core id */ + u16 cpu_startup_core_id; /* Boot core id */ + u16 reserved_cores_mask; u32 cpu_clock_freq; /* cpu_clock */ u32 nr_cpus; } __packed; @@ -149,6 +150,8 @@ struct loongson_system_configuration { u32 nr_nodes; int cores_per_node; int cores_per_package; + u16 boot_cpu_id; + u16 reserved_cpus_mask; enum loongson_cpu_type cputype; u64 ht_control_base; u64 pci_mem_start_addr; diff --git a/arch/mips/include/asm/mach-loongson/irq.h b/arch/mips/include/asm/mach-loongson/irq.h index 34560bda6626..a281cca5f2fb 100644 --- a/arch/mips/include/asm/mach-loongson/irq.h +++ b/arch/mips/include/asm/mach-loongson/irq.h @@ -32,8 +32,7 @@ #define LOONGSON_INT_ROUTER_LPC LOONGSON_INT_ROUTER_ENTRY(0x0a) #define LOONGSON_INT_ROUTER_HT1(n) LOONGSON_INT_ROUTER_ENTRY(n + 0x18) -#define LOONGSON_INT_CORE0_INT0 0x11 /* route to int 0 of core 0 */ -#define LOONGSON_INT_CORE0_INT1 0x21 /* route to int 1 of core 0 */ +#define LOONGSON_INT_COREx_INTy(x, y) (1<<(x) | 1<<(y+4)) /* route to int y of core x */ #endif diff --git a/arch/mips/include/asm/mach-loongson/topology.h b/arch/mips/include/asm/mach-loongson/topology.h index 5598ba77d2ef..0d8f3b55bdbc 100644 --- a/arch/mips/include/asm/mach-loongson/topology.h +++ b/arch/mips/include/asm/mach-loongson/topology.h @@ -3,7 +3,7 @@ #ifdef CONFIG_NUMA -#define cpu_to_node(cpu) ((cpu) >> 2) +#define cpu_to_node(cpu) (cpu_logical_map(cpu) >> 2) #define parent_node(node) (node) #define cpumask_of_node(node) (&__node_data[(node)]->cpumask) |
