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LoongArch: Enable PG when wakeup from suspend

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Some firmwares don't enable PG when wakeup from suspend, so do it in
kernel. This can improve code compatibility for boot kernel.

Signed-off-by: Baoqi Zhang <zhangbaoqi@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Huacai Chen 2023-04-18 19:38:58 +08:00
parent 6637775ca3
commit 1c1378a409
1 changed files with 4 additions and 0 deletions
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4
arch/loongarch/power/suspend_asm.S
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@ -80,6 +80,10 @@ SYM_INNER_LABEL(loongarch_wakeup_start, SYM_L_GLOBAL)
JUMP_VIRT_ADDR t0, t1
/* Enable PG */
li.w t0, 0xb0 # PLV=0, IE=0, PG=1
csrwr t0, LOONGARCH_CSR_CRMD
la.pcrel t0, acpi_saved_sp
ld.d sp, t0, 0
SETUP_WAKEUP