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LoongArch: Add JUMP_VIRT_ADDR macro implementation to avoid using la.abs

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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>
This commit is contained in:
Youling Tang 2023-02-25 15:52:56 +08:00 committed by Huacai Chen
parent f733f119e9
commit 8cbd5ebfe2
3 changed files with 15 additions and 11 deletions
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9
arch/loongarch/include/asm/stackframe.h
View file

@ -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

12
arch/loongarch/kernel/head.S
View file

@ -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

5
arch/loongarch/power/suspend_asm.S
View file

@ -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