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MIPS: Loongson64: Give chance to build under !CONFIG_NUMA and !CONFIG_SMP 

In the current code, we can not build under !CONFIG_NUMA and !CONFIG_SMP
on the Loongson64 platform, it seems bad for the users who just want to
use pure single core (not nosmp) to debug, so do the following things to
give them a chance:

(1) Do not select NUMA and SMP for MACH_LOONGSON64 in Kconfig, make NUMA
depends on SMP, and then just set them in the loongson3_defconfig.
(2) Move szmem() from numa.c to init.c and add prom_init_memory() under
!CONFIG_NUMA.
(3) Clean up szmem() due to the statements of case SYSTEM_RAM_LOW and
SYSTEM_RAM_HIGH are the same.
(4) Remove the useless declaration of prom_init_memory() and add the
declaration of szmem() in loongson.h to avoid build error.

Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Jinyang He <hejinyang@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Tiezhu Yang 2020-12-03 20:32:52 +08:00 коммит произвёл Thomas Bogendoerfer
Родитель dbafd5105c
Коммит cf8194e46c
5 изменённых файлов: 54 добавлений и 54 удалений
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3
arch/mips/Kconfig
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@ -491,8 +491,6 @@ config MACH_LOONGSON64
select SYS_SUPPORTS_ZBOOT
select SYS_SUPPORTS_RELOCATABLE
select ZONE_DMA32
select NUMA
select SMP
select COMMON_CLK
select USE_OF
select BUILTIN_DTB
@ -2758,6 +2756,7 @@ config ARCH_SPARSEMEM_ENABLE
config NUMA
bool "NUMA Support"
depends on SYS_SUPPORTS_NUMA
select SMP
help
Say Y to compile the kernel to support NUMA (Non-Uniform Memory
Access). This option improves performance on systems with more

2
arch/mips/configs/loongson3_defconfig
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@ -31,6 +31,8 @@ CONFIG_PERF_EVENTS=y
CONFIG_MACH_LOONGSON64=y
CONFIG_CPU_HAS_MSA=y
CONFIG_NR_CPUS=16
CONFIG_NUMA=y
CONFIG_SMP=y
CONFIG_HZ_256=y
CONFIG_KEXEC=y
CONFIG_MIPS32_O32=y

2
arch/mips/include/asm/mach-loongson64/loongson.h
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@ -23,8 +23,8 @@ extern u32 memsize, highmemsize;
extern const struct plat_smp_ops loongson3_smp_ops;
/* loongson-specific command line, env and memory initialization */
extern void __init prom_init_memory(void);
extern void __init prom_init_env(void);
extern void __init szmem(unsigned int node);
extern void *loongson_fdt_blob;
/* irq operation functions */

49
arch/mips/loongson64/init.c
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@ -47,6 +47,51 @@ void virtual_early_config(void)
node_id_offset = 44;
}
void __init szmem(unsigned int node)
{
u32 i, mem_type;
static unsigned long num_physpages;
u64 node_id, node_psize, start_pfn, end_pfn, mem_start, mem_size;
/* Parse memory information and activate */
for (i = 0; i < loongson_memmap->nr_map; i++) {
node_id = loongson_memmap->map[i].node_id;
if (node_id != node)
continue;
mem_type = loongson_memmap->map[i].mem_type;
mem_size = loongson_memmap->map[i].mem_size;
mem_start = loongson_memmap->map[i].mem_start;
switch (mem_type) {
case SYSTEM_RAM_LOW:
case SYSTEM_RAM_HIGH:
start_pfn = ((node_id << 44) + mem_start) >> PAGE_SHIFT;
node_psize = (mem_size << 20) >> PAGE_SHIFT;
end_pfn = start_pfn + node_psize;
num_physpages += node_psize;
pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n",
(u32)node_id, mem_type, mem_start, mem_size);
pr_info(" start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n",
start_pfn, end_pfn, num_physpages);
memblock_add_node(PFN_PHYS(start_pfn), PFN_PHYS(node_psize), node);
break;
case SYSTEM_RAM_RESERVED:
pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n",
(u32)node_id, mem_type, mem_start, mem_size);
memblock_reserve(((node_id << 44) + mem_start), mem_size << 20);
break;
}
}
}
#ifndef CONFIG_NUMA
static void __init prom_init_memory(void)
{
szmem(0);
}
#endif
void __init prom_init(void)
{
fw_init_cmdline();
@ -57,7 +102,11 @@ void __init prom_init(void)
loongson_sysconf.early_config();
#ifdef CONFIG_NUMA
prom_init_numa_memory();
#else
prom_init_memory();
#endif
/* Hardcode to CPU UART 0 */
setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE + 0x1e0), 0, 1024);

52
arch/mips/loongson64/numa.c
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@ -25,6 +25,7 @@
#include <asm/time.h>
#include <asm/wbflush.h>
#include <boot_param.h>
#include <loongson.h>
static struct pglist_data prealloc__node_data[MAX_NUMNODES];
unsigned char __node_distances[MAX_NUMNODES][MAX_NUMNODES];
@ -81,57 +82,6 @@ static void __init init_topology_matrix(void)
}
}
static void __init szmem(unsigned int node)
{
u32 i, mem_type;
static unsigned long num_physpages;
u64 node_id, node_psize, start_pfn, end_pfn, mem_start, mem_size;
/* Parse memory information and activate */
for (i = 0; i < loongson_memmap->nr_map; i++) {
node_id = loongson_memmap->map[i].node_id;
if (node_id != node)
continue;
mem_type = loongson_memmap->map[i].mem_type;
mem_size = loongson_memmap->map[i].mem_size;
mem_start = loongson_memmap->map[i].mem_start;
switch (mem_type) {
case SYSTEM_RAM_LOW:
start_pfn = ((node_id << 44) + mem_start) >> PAGE_SHIFT;
node_psize = (mem_size << 20) >> PAGE_SHIFT;
end_pfn = start_pfn + node_psize;
num_physpages += node_psize;
pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n",
(u32)node_id, mem_type, mem_start, mem_size);
pr_info(" start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n",
start_pfn, end_pfn, num_physpages);
memblock_add_node(PFN_PHYS(start_pfn),
PFN_PHYS(node_psize), node);
break;
case SYSTEM_RAM_HIGH:
start_pfn = ((node_id << 44) + mem_start) >> PAGE_SHIFT;
node_psize = (mem_size << 20) >> PAGE_SHIFT;
end_pfn = start_pfn + node_psize;
num_physpages += node_psize;
pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n",
(u32)node_id, mem_type, mem_start, mem_size);
pr_info(" start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n",
start_pfn, end_pfn, num_physpages);
memblock_add_node(PFN_PHYS(start_pfn),
PFN_PHYS(node_psize), node);
break;
case SYSTEM_RAM_RESERVED:
pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n",
(u32)node_id, mem_type, mem_start, mem_size);
memblock_reserve(((node_id << 44) + mem_start),
mem_size << 20);
break;
}
}
}
static void __init node_mem_init(unsigned int node)
{
unsigned long node_addrspace_offset;