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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/init.h>
#include <linux/acpi.h> #include <linux/acpi.h>
#include <linux/efi-bgrt.h>
#include <linux/irq.h> #include <linux/irq.h>
#include <linux/irqdomain.h> #include <linux/irqdomain.h>
#include <linux/memblock.h> #include <linux/memblock.h>
@ -212,6 +213,9 @@ void __init acpi_boot_table_init(void)
/* Do not enable ACPI SPCR console by default */ /* Do not enable ACPI SPCR console by default */
acpi_parse_spcr(earlycon_acpi_spcr_enable, false); acpi_parse_spcr(earlycon_acpi_spcr_enable, false);
if (IS_ENABLED(CONFIG_ACPI_BGRT))
acpi_table_parse(ACPI_SIG_BGRT, acpi_parse_bgrt);
return; return;
fdt_earlycon: fdt_earlycon:

2
drivers/acpi/Kconfig
View File

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