Messages in this thread Patch in this message | | | From | Youling Tang <> | Subject | [PATCH v6 2/5] LoongArch: Add JUMP_VIRT_ADDR macro implementation to avoid using la.abs | Date | Wed, 22 Feb 2023 11:16:40 +0800 |
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Add JUMP_VIRT_ADDR macro implementation to avoid using la.abs.
Signed-off-by: Youling Tang <tangyouling@loongson.cn> --- arch/loongarch/include/asm/stackframe.h | 9 +++++++++ arch/loongarch/kernel/head.S | 12 ++++-------- arch/loongarch/power/suspend_asm.S | 5 ++--- 3 files changed, 15 insertions(+), 11 deletions(-)
diff --git a/arch/loongarch/include/asm/stackframe.h b/arch/loongarch/include/asm/stackframe.h index 7deb043ce387..855c9d9e3210 100644 --- a/arch/loongarch/include/asm/stackframe.h +++ b/arch/loongarch/include/asm/stackframe.h @@ -10,6 +10,7 @@ #include <asm/asm.h> #include <asm/asmmacro.h> #include <asm/asm-offsets.h> +#include <asm/addrspace.h> #include <asm/loongarch.h> #include <asm/thread_info.h> @@ -216,4 +217,12 @@ RESTORE_SP_AND_RET \docfi .endm +/* Jump to the virtual address. */ + .macro JUMP_VIRT_ADDR temp1 temp2 + li.d \temp1, CACHE_BASE + pcaddi \temp2, 0 + or \temp1, \temp1, \temp2 + jirl zero, \temp1, 0xc + .endm + #endif /* _ASM_STACKFRAME_H */ diff --git a/arch/loongarch/kernel/head.S b/arch/loongarch/kernel/head.S index aa6181714ec3..d2ac26b5b22b 100644 --- a/arch/loongarch/kernel/head.S +++ b/arch/loongarch/kernel/head.S @@ -50,11 +50,8 @@ SYM_CODE_START(kernel_entry) # kernel entry point li.d t0, CSR_DMW1_INIT # CA, PLV0, 0x9000 xxxx xxxx xxxx csrwr t0, LOONGARCH_CSR_DMWIN1 - /* We might not get launched at the address the kernel is linked to, - so we jump there. */ - la.abs t0, 0f - jr t0 -0: + JUMP_VIRT_ADDR t0, t1 + /* Enable PG */ li.w t0, 0xb0 # PLV=0, IE=0, PG=1 csrwr t0, LOONGARCH_CSR_CRMD @@ -106,9 +103,8 @@ SYM_CODE_START(smpboot_entry) li.d t0, CSR_DMW1_INIT # CA, PLV0 csrwr t0, LOONGARCH_CSR_DMWIN1 - la.abs t0, 0f - jr t0 -0: + JUMP_VIRT_ADDR t0, t1 + /* Enable PG */ li.w t0, 0xb0 # PLV=0, IE=0, PG=1 csrwr t0, LOONGARCH_CSR_CRMD diff --git a/arch/loongarch/power/suspend_asm.S b/arch/loongarch/power/suspend_asm.S index eb2675642f9f..90da899c06a1 100644 --- a/arch/loongarch/power/suspend_asm.S +++ b/arch/loongarch/power/suspend_asm.S @@ -78,9 +78,8 @@ SYM_INNER_LABEL(loongarch_wakeup_start, SYM_L_GLOBAL) li.d t0, CSR_DMW1_INIT # CA, PLV0 csrwr t0, LOONGARCH_CSR_DMWIN1 - la.abs t0, 0f - jr t0 -0: + JUMP_VIRT_ADDR t0, t1 + la.pcrel t0, acpi_saved_sp ld.d sp, t0, 0 SETUP_WAKEUP -- 2.37.3
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