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| author | Youling Tang <tangyouling@loongson.cn> | 2023-02-25 10:52:56 +0300 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2023-02-25 17:12:16 +0300 |
| commit | 8cbd5ebfe241699288cb152081854414f6265718 (patch) | |
| tree | bf26d6bcc1c3f9b364f474b65b0399c09514658b | |
| parent | f733f119e9b31088063652a7ad16963d85cb73dd (diff) | |
| download | linux-8cbd5ebfe241699288cb152081854414f6265718.tar.xz | |
LoongArch: Add JUMP_VIRT_ADDR macro implementation to avoid using la.abs
Add JUMP_VIRT_ADDR macro implementation to avoid using la.abs directly.
This is a preparation for subsequent patches.
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
| -rw-r--r-- | arch/loongarch/include/asm/stackframe.h | 9 | ||||
| -rw-r--r-- | arch/loongarch/kernel/head.S | 12 | ||||
| -rw-r--r-- | 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..0274e704c13b 100644 --- a/arch/loongarch/include/asm/stackframe.h +++ b/arch/loongarch/include/asm/stackframe.h @@ -7,6 +7,7 @@ #include <linux/threads.h> +#include <asm/addrspace.h> #include <asm/asm.h> #include <asm/asmmacro.h> #include <asm/asm-offsets.h> @@ -36,6 +37,14 @@ cfi_restore \reg \offset \docfi .endm +/* Jump to the runtime 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 + .macro BACKUP_T0T1 csrwr t0, EXCEPTION_KS0 csrwr t1, EXCEPTION_KS1 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 |