xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

MIPS: Kernel: Identify Loongson-2K processors

Browse Source 
Loongson-2K (Loongson64 Reduced) is a family of SoC shipped with
gs264e core.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Jiaxun Yang
2020-04-22 22:43:44 +08:00
committed by Thomas Bogendoerfer
parent e2e13925ff
commit 0cf2ea1121
4 changed files with 33 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
arch/mips/kernel/cpu-probe.c
View File

@@ -1935,7 +1935,24 @@ platform:
static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
{
switch (c->processor_id & PRID_IMP_MASK) {
case PRID_IMP_LOONGSON_64C: /* Loongson-2/3 */
case PRID_IMP_LOONGSON_64R: /* Loongson-64 Reduced */
switch (c->processor_id & PRID_REV_MASK) {
case PRID_REV_LOONGSON2K_R1_0:
case PRID_REV_LOONGSON2K_R1_1:
case PRID_REV_LOONGSON2K_R1_2:
case PRID_REV_LOONGSON2K_R1_3:
c->cputype = CPU_LOONGSON64;
__cpu_name[cpu] = "Loongson-2K";
set_elf_platform(cpu, "gs264e");
set_isa(c, MIPS_CPU_ISA_M64R2);
break;
}
decode_configs(c);
c->writecombine = _CACHE_UNCACHED_ACCELERATED;
c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_EXT |
MIPS_ASE_LOONGSON_EXT2);
break;
case PRID_IMP_LOONGSON_64C: /* Loongson-3 Classic */
switch (c->processor_id & PRID_REV_MASK) {
case PRID_REV_LOONGSON3A_R2_0:
case PRID_REV_LOONGSON3A_R2_1:

3
arch/mips/kernel/idle.c
View File

@@ -180,7 +180,8 @@ void __init check_wait(void)
break;
case CPU_LOONGSON64:
if ((c->processor_id & (PRID_IMP_MASK | PRID_REV_MASK)) >=
(PRID_IMP_LOONGSON_64C | PRID_REV_LOONGSON3A_R2_0))
(PRID_IMP_LOONGSON_64C | PRID_REV_LOONGSON3A_R2_0) ||
(c->processor_id & PRID_IMP_MASK) == PRID_IMP_LOONGSON_64R)
cpu_wait = r4k_wait;
break;