diff options
Diffstat (limited to 'arch/loongarch/kernel/head.S')
| -rw-r--r-- | arch/loongarch/kernel/head.S | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/loongarch/kernel/head.S b/arch/loongarch/kernel/head.S index 0ecab4216392..c4f7de2e2805 100644 --- a/arch/loongarch/kernel/head.S +++ b/arch/loongarch/kernel/head.S @@ -74,6 +74,11 @@ SYM_CODE_START(kernel_entry) # kernel entry point la.pcrel t0, fw_arg2 st.d a2, t0, 0 +#ifdef CONFIG_PAGE_SIZE_4KB + li.d t0, 0 + li.d t1, CSR_STFILL + csrxchg t0, t1, LOONGARCH_CSR_IMPCTL1 +#endif /* KSave3 used for percpu base, initialized as 0 */ csrwr zero, PERCPU_BASE_KS /* GPR21 used for percpu base (runtime), initialized as 0 */ @@ -126,6 +131,11 @@ SYM_CODE_START(smpboot_entry) JUMP_VIRT_ADDR t0, t1 +#ifdef CONFIG_PAGE_SIZE_4KB + li.d t0, 0 + li.d t1, CSR_STFILL + csrxchg t0, t1, LOONGARCH_CSR_IMPCTL1 +#endif /* Enable PG */ li.w t0, 0xb0 # PLV=0, IE=0, PG=1 csrwr t0, LOONGARCH_CSR_CRMD |