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[PATCH v2] LoongArch: Enable ACPI BGRT handling

Bibo Mao posted 1 patch 2 months, 2 weeks ago 
arch/loongarch/include/asm/io.h | 4 +---
arch/loongarch/kernel/acpi.c    | 8 ++++++--
arch/loongarch/mm/ioremap.c     | 9 +++++++++
drivers/acpi/Kconfig            | 2 +-
4 files changed, 17 insertions(+), 6 deletions(-)
[PATCH v2] LoongArch: Enable ACPI BGRT handling
Posted by Bibo Mao 2 months, 2 weeks ago 
Add ACPI BGRT support on LoongArch so it can display image provied by
acpi table at boot stage and switch to graphical UI smoothly.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202409102056.DNqh6zzA-lkp@intel.com/
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
---
v1 ... v2:
  1. Solve compile warning issue reported from lkp, return type of
     function early_memunmap() is void *, that of function early_ioremap()
     is void __iomem *, force type conversion is added.
---
 arch/loongarch/include/asm/io.h | 4 +---
 arch/loongarch/kernel/acpi.c    | 8 ++++++--
 arch/loongarch/mm/ioremap.c     | 9 +++++++++
 drivers/acpi/Kconfig            | 2 +-
 4 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/arch/loongarch/include/asm/io.h b/arch/loongarch/include/asm/io.h
index 5e95a60df180..3049bccec693 100644
--- a/arch/loongarch/include/asm/io.h
+++ b/arch/loongarch/include/asm/io.h
@@ -10,6 +10,7 @@
 
 #include <asm/addrspace.h>
 #include <asm/cpu.h>
+#include <asm/early_ioremap.h>
 #include <asm/page.h>
 #include <asm/pgtable-bits.h>
 #include <asm/string.h>
@@ -17,9 +18,6 @@
 extern void __init __iomem *early_ioremap(u64 phys_addr, unsigned long size);
 extern void __init early_iounmap(void __iomem *addr, unsigned long size);
 
-#define early_memremap early_ioremap
-#define early_memunmap early_iounmap
-
 #ifdef CONFIG_ARCH_IOREMAP
 
 static inline void __iomem *ioremap_prot(phys_addr_t offset, unsigned long size,
diff --git a/arch/loongarch/kernel/acpi.c b/arch/loongarch/kernel/acpi.c
index 929a497c987e..2993d7921198 100644
--- a/arch/loongarch/kernel/acpi.c
+++ b/arch/loongarch/kernel/acpi.c
@@ -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>
@@ -39,14 +40,14 @@ void __init __iomem * __acpi_map_table(unsigned long phys, unsigned long size)
 	if (!phys || !size)
 		return NULL;
 
-	return early_memremap(phys, size);
+	return (void __iomem *)early_memremap(phys, size);
 }
 void __init __acpi_unmap_table(void __iomem *map, unsigned long size)
 {
 	if (!map || !size)
 		return;
 
-	early_memunmap(map, size);
+	early_memunmap((void *)map, size);
 }
 
 void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size)
@@ -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:
diff --git a/arch/loongarch/mm/ioremap.c b/arch/loongarch/mm/ioremap.c
index 70ca73019811..28562ac510c8 100644
--- a/arch/loongarch/mm/ioremap.c
+++ b/arch/loongarch/mm/ioremap.c
@@ -16,6 +16,15 @@ void __init early_iounmap(void __iomem *addr, unsigned long size)
 
 }
 
+void __init *early_memremap(resource_size_t phys_addr, unsigned long size)
+{
+	return (__force void *)early_ioremap(phys_addr, size);
+}
+
+void __init early_memunmap(void *addr, unsigned long size)
+{
+}
+
 void *early_memremap_ro(resource_size_t phys_addr, unsigned long size)
 {
 	return early_memremap(phys_addr, size);
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index e3a7c2aedd5f..d67f63d93b2a 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -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

base-commit: 196145c606d0f816fd3926483cb1ff87e09c2c0b
-- 
2.39.3
Re: [PATCH v2] LoongArch: Enable ACPI BGRT handling
Posted by Huacai Chen 2 months, 2 weeks ago 
Hi, Bibo,

On Sat, Sep 14, 2024 at 2:53 PM Bibo Mao <maobibo@loongson.cn> wrote:
>
> Add ACPI BGRT support on LoongArch so it can display image provied by
> acpi table at boot stage and switch to graphical UI smoothly.
>
> Reported-by: kernel test robot <lkp@intel.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202409102056.DNqh6zzA-lkp@intel.com/
> Signed-off-by: Bibo Mao <maobibo@loongson.cn>
> ---
> v1 ... v2:
>   1. Solve compile warning issue reported from lkp, return type of
>      function early_memunmap() is void *, that of function early_ioremap()
>      is void __iomem *, force type conversion is added.
I've applied V1, build warnings seems another problem which has no
relationship with this patch itself.

Huacai

> ---
>  arch/loongarch/include/asm/io.h | 4 +---
>  arch/loongarch/kernel/acpi.c    | 8 ++++++--
>  arch/loongarch/mm/ioremap.c     | 9 +++++++++
>  drivers/acpi/Kconfig            | 2 +-
>  4 files changed, 17 insertions(+), 6 deletions(-)
>
> diff --git a/arch/loongarch/include/asm/io.h b/arch/loongarch/include/asm/io.h
> index 5e95a60df180..3049bccec693 100644
> --- a/arch/loongarch/include/asm/io.h
> +++ b/arch/loongarch/include/asm/io.h
> @@ -10,6 +10,7 @@
>
>  #include <asm/addrspace.h>
>  #include <asm/cpu.h>
> +#include <asm/early_ioremap.h>
>  #include <asm/page.h>
>  #include <asm/pgtable-bits.h>
>  #include <asm/string.h>
> @@ -17,9 +18,6 @@
>  extern void __init __iomem *early_ioremap(u64 phys_addr, unsigned long size);
>  extern void __init early_iounmap(void __iomem *addr, unsigned long size);
>
> -#define early_memremap early_ioremap
> -#define early_memunmap early_iounmap
> -
>  #ifdef CONFIG_ARCH_IOREMAP
>
>  static inline void __iomem *ioremap_prot(phys_addr_t offset, unsigned long size,
> diff --git a/arch/loongarch/kernel/acpi.c b/arch/loongarch/kernel/acpi.c
> index 929a497c987e..2993d7921198 100644
> --- a/arch/loongarch/kernel/acpi.c
> +++ b/arch/loongarch/kernel/acpi.c
> @@ -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>
> @@ -39,14 +40,14 @@ void __init __iomem * __acpi_map_table(unsigned long phys, unsigned long size)
>         if (!phys || !size)
>                 return NULL;
>
> -       return early_memremap(phys, size);
> +       return (void __iomem *)early_memremap(phys, size);
>  }
>  void __init __acpi_unmap_table(void __iomem *map, unsigned long size)
>  {
>         if (!map || !size)
>                 return;
>
> -       early_memunmap(map, size);
> +       early_memunmap((void *)map, size);
>  }
>
>  void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size)
> @@ -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:
> diff --git a/arch/loongarch/mm/ioremap.c b/arch/loongarch/mm/ioremap.c
> index 70ca73019811..28562ac510c8 100644
> --- a/arch/loongarch/mm/ioremap.c
> +++ b/arch/loongarch/mm/ioremap.c
> @@ -16,6 +16,15 @@ void __init early_iounmap(void __iomem *addr, unsigned long size)
>
>  }
>
> +void __init *early_memremap(resource_size_t phys_addr, unsigned long size)
> +{
> +       return (__force void *)early_ioremap(phys_addr, size);
> +}
> +
> +void __init early_memunmap(void *addr, unsigned long size)
> +{
> +}
> +
>  void *early_memremap_ro(resource_size_t phys_addr, unsigned long size)
>  {
>         return early_memremap(phys_addr, size);
> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
> index e3a7c2aedd5f..d67f63d93b2a 100644
> --- a/drivers/acpi/Kconfig
> +++ b/drivers/acpi/Kconfig
> @@ -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
>
> base-commit: 196145c606d0f816fd3926483cb1ff87e09c2c0b
> --
> 2.39.3
>
>
Re: [PATCH v2] LoongArch: Enable ACPI BGRT handling
Posted by maobibo 2 months, 2 weeks ago 

On 2024/9/14 下午3:01, Huacai Chen wrote:
> Hi, Bibo,
> 
> On Sat, Sep 14, 2024 at 2:53 PM Bibo Mao <maobibo@loongson.cn> wrote:
>>
>> Add ACPI BGRT support on LoongArch so it can display image provied by
>> acpi table at boot stage and switch to graphical UI smoothly.
>>
>> Reported-by: kernel test robot <lkp@intel.com>
>> Closes: https://lore.kernel.org/oe-kbuild-all/202409102056.DNqh6zzA-lkp@intel.com/
>> Signed-off-by: Bibo Mao <maobibo@loongson.cn>
>> ---
>> v1 ... v2:
>>    1. Solve compile warning issue reported from lkp, return type of
>>       function early_memunmap() is void *, that of function early_ioremap()
>>       is void __iomem *, force type conversion is added.
> I've applied V1, build warnings seems another problem which has no
> relationship with this patch itself.
Good, thanks for applying it.

Regards
Bibo Mao
> 
> Huacai
> 
>> ---
>>   arch/loongarch/include/asm/io.h | 4 +---
>>   arch/loongarch/kernel/acpi.c    | 8 ++++++--
>>   arch/loongarch/mm/ioremap.c     | 9 +++++++++
>>   drivers/acpi/Kconfig            | 2 +-
>>   4 files changed, 17 insertions(+), 6 deletions(-)
>>
>> diff --git a/arch/loongarch/include/asm/io.h b/arch/loongarch/include/asm/io.h
>> index 5e95a60df180..3049bccec693 100644
>> --- a/arch/loongarch/include/asm/io.h
>> +++ b/arch/loongarch/include/asm/io.h
>> @@ -10,6 +10,7 @@
>>
>>   #include <asm/addrspace.h>
>>   #include <asm/cpu.h>
>> +#include <asm/early_ioremap.h>
>>   #include <asm/page.h>
>>   #include <asm/pgtable-bits.h>
>>   #include <asm/string.h>
>> @@ -17,9 +18,6 @@
>>   extern void __init __iomem *early_ioremap(u64 phys_addr, unsigned long size);
>>   extern void __init early_iounmap(void __iomem *addr, unsigned long size);
>>
>> -#define early_memremap early_ioremap
>> -#define early_memunmap early_iounmap
>> -
>>   #ifdef CONFIG_ARCH_IOREMAP
>>
>>   static inline void __iomem *ioremap_prot(phys_addr_t offset, unsigned long size,
>> diff --git a/arch/loongarch/kernel/acpi.c b/arch/loongarch/kernel/acpi.c
>> index 929a497c987e..2993d7921198 100644
>> --- a/arch/loongarch/kernel/acpi.c
>> +++ b/arch/loongarch/kernel/acpi.c
>> @@ -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>
>> @@ -39,14 +40,14 @@ void __init __iomem * __acpi_map_table(unsigned long phys, unsigned long size)
>>          if (!phys || !size)
>>                  return NULL;
>>
>> -       return early_memremap(phys, size);
>> +       return (void __iomem *)early_memremap(phys, size);
>>   }
>>   void __init __acpi_unmap_table(void __iomem *map, unsigned long size)
>>   {
>>          if (!map || !size)
>>                  return;
>>
>> -       early_memunmap(map, size);
>> +       early_memunmap((void *)map, size);
>>   }
>>
>>   void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size)
>> @@ -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:
>> diff --git a/arch/loongarch/mm/ioremap.c b/arch/loongarch/mm/ioremap.c
>> index 70ca73019811..28562ac510c8 100644
>> --- a/arch/loongarch/mm/ioremap.c
>> +++ b/arch/loongarch/mm/ioremap.c
>> @@ -16,6 +16,15 @@ void __init early_iounmap(void __iomem *addr, unsigned long size)
>>
>>   }
>>
>> +void __init *early_memremap(resource_size_t phys_addr, unsigned long size)
>> +{
>> +       return (__force void *)early_ioremap(phys_addr, size);
>> +}
>> +
>> +void __init early_memunmap(void *addr, unsigned long size)
>> +{
>> +}
>> +
>>   void *early_memremap_ro(resource_size_t phys_addr, unsigned long size)
>>   {
>>          return early_memremap(phys_addr, size);
>> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
>> index e3a7c2aedd5f..d67f63d93b2a 100644
>> --- a/drivers/acpi/Kconfig
>> +++ b/drivers/acpi/Kconfig
>> @@ -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
>>
>> base-commit: 196145c606d0f816fd3926483cb1ff87e09c2c0b
>> --
>> 2.39.3
>>
>>

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