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LoongArch: Enable ACPI BGRT handling

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Add ACPI BGRT support on LoongArch so it can display image provied by
acpi table at boot stage and switch to graphical UI smoothly.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Bibo Mao 2024-09-24 15:32:06 +08:00 committed by Huacai Chen
parent e8dd556c74
commit d0bb0b6000
2 changed files with 5 additions and 1 deletions
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4
arch/loongarch/kernel/acpi.c
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@ -9,6 +9,7 @@
#include <linux/init.h>
#include <linux/acpi.h>
#include <linux/efi-bgrt.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/memblock.h>
@ -212,6 +213,9 @@ void __init acpi_boot_table_init(void)
/* Do not enable ACPI SPCR console by default */
acpi_parse_spcr(earlycon_acpi_spcr_enable, false);
if (IS_ENABLED(CONFIG_ACPI_BGRT))
acpi_table_parse(ACPI_SIG_BGRT, acpi_parse_bgrt);
return;
fdt_earlycon:

2
drivers/acpi/Kconfig
View File

@ -451,7 +451,7 @@ config ACPI_HED
config ACPI_BGRT
bool "Boottime Graphics Resource Table support"
depends on EFI && (X86 || ARM64)
depends on EFI && (X86 || ARM64 || LOONGARCH)
help
This driver adds support for exposing the ACPI Boottime Graphics
Resource Table, which allows the operating system to obtain