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authorBhupesh Sharma <bhsharma@redhat.com>2017-04-04 17:02:41 +0100
committerIngo Molnar <mingo@kernel.org>2017-04-05 12:27:25 +0200
commit6e7300cff1c410dde7ac4354b6a0a8cb0a561e54 (patch)
treedca1937911bd357c86c6d1fc91df833c8a0c11ea
parent75def552bb1e0d39918df31b86f7d09e754ea0fc (diff)
downloadop-kernel-dev-6e7300cff1c410dde7ac4354b6a0a8cb0a561e54.zip
op-kernel-dev-6e7300cff1c410dde7ac4354b6a0a8cb0a561e54.tar.gz
efi/bgrt: Enable ACPI BGRT handling on arm64
Now that the ACPI BGRT handling code has been made generic, we can enable it for arm64. Signed-off-by: Bhupesh Sharma <bhsharma@redhat.com> [ Updated commit log to reflect that BGRT is only enabled for arm64, and added missing 'return' statement to the dummy acpi_parse_bgrt() function. ] Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/20170404160245.27812-8-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r--arch/arm64/kernel/acpi.c3
-rw-r--r--arch/x86/kernel/acpi/boot.c6
-rw-r--r--drivers/acpi/Kconfig2
-rw-r--r--drivers/acpi/bgrt.c6
-rw-r--r--include/linux/efi-bgrt.h5
5 files changed, 15 insertions, 7 deletions
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
index 64d9cbd6..e25c11e 100644
--- a/arch/arm64/kernel/acpi.c
+++ b/arch/arm64/kernel/acpi.c
@@ -18,6 +18,7 @@
#include <linux/acpi.h>
#include <linux/bootmem.h>
#include <linux/cpumask.h>
+#include <linux/efi-bgrt.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
@@ -233,6 +234,8 @@ done:
early_init_dt_scan_chosen_stdout();
} else {
parse_spcr(earlycon_init_is_deferred);
+ if (IS_ENABLED(CONFIG_ACPI_BGRT))
+ acpi_table_parse(ACPI_SIG_BGRT, acpi_parse_bgrt);
}
}
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index b2879cc23..7085498 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -1564,12 +1564,6 @@ int __init early_acpi_boot_init(void)
return 0;
}
-static int __init acpi_parse_bgrt(struct acpi_table_header *table)
-{
- efi_bgrt_init(table);
- return 0;
-}
-
int __init acpi_boot_init(void)
{
/* those are executed after early-quirks are executed */
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 83e5f7e..dad02c0 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -440,7 +440,7 @@ config ACPI_CUSTOM_METHOD
config ACPI_BGRT
bool "Boottime Graphics Resource Table support"
- depends on EFI && X86
+ depends on EFI && (X86 || ARM64)
help
This driver adds support for exposing the ACPI Boottime Graphics
Resource Table, which allows the operating system to obtain
diff --git a/drivers/acpi/bgrt.c b/drivers/acpi/bgrt.c
index ca28aa57..df1c629 100644
--- a/drivers/acpi/bgrt.c
+++ b/drivers/acpi/bgrt.c
@@ -81,6 +81,12 @@ static struct attribute_group bgrt_attribute_group = {
.bin_attrs = bgrt_bin_attributes,
};
+int __init acpi_parse_bgrt(struct acpi_table_header *table)
+{
+ efi_bgrt_init(table);
+ return 0;
+}
+
static int __init bgrt_init(void)
{
int ret;
diff --git a/include/linux/efi-bgrt.h b/include/linux/efi-bgrt.h
index 2fd3993..e6f624b 100644
--- a/include/linux/efi-bgrt.h
+++ b/include/linux/efi-bgrt.h
@@ -6,6 +6,7 @@
#ifdef CONFIG_ACPI_BGRT
void efi_bgrt_init(struct acpi_table_header *table);
+int __init acpi_parse_bgrt(struct acpi_table_header *table);
/* The BGRT data itself; only valid if bgrt_image != NULL. */
extern size_t bgrt_image_size;
@@ -14,6 +15,10 @@ extern struct acpi_table_bgrt bgrt_tab;
#else /* !CONFIG_ACPI_BGRT */
static inline void efi_bgrt_init(struct acpi_table_header *table) {}
+static inline int __init acpi_parse_bgrt(struct acpi_table_header *table)
+{
+ return 0;
+}
#endif /* !CONFIG_ACPI_BGRT */
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