Re: [U-Boot] [PATCH v1] x86: zImage: Propagate acpi_rsdp_addr to kernel via boot parameters

[Bin Meng]

On Tue, Oct 1, 2019 at 6:18 PM Bin Meng  wrote:
>
> On Fri, Sep 13, 2019 at 11:42 PM Andy Shevchenko
>  wrote:
> >
> > This is reincarnation of the U-Boot
> >
> > commit 3469bf4274540d1491d58e878a9edc0bdcba17ac
> > Author: Andy Shevchenko 
> > Date:   Wed Jan 10 19:40:15 2018 +0200
> >
> > x86: zImage: Propagate acpi_rsdp_addr to kernel via boot parameters
> >
> > after upstream got eventually the Linux kernel
> >
> > commit e6e094e053af75cbc164e950814d3d084fb1e698
> > Author: Juergen Gross 
> > Date:   Tue Nov 20 08:25:29 2018 +0100
> >
> > x86/acpi, x86/boot: Take RSDP address from boot params if available
> >
> > Signed-off-by: Andy Shevchenko 
> > ---
> >  arch/x86/include/asm/bootparam.h | 3 ++-
> >  arch/x86/lib/zimage.c| 4 
> >  2 files changed, 6 insertions(+), 1 deletion(-)
> >
>
> Reviewed-by: Bin Meng 

applied to u-boot-x86, thanks!
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Re: [U-Boot] [PATCH v1] x86: zImage: Propagate acpi_rsdp_addr to kernel via boot parameters

[Bin Meng]

On Fri, Sep 13, 2019 at 11:42 PM Andy Shevchenko
 wrote:
>
> This is reincarnation of the U-Boot
>
> commit 3469bf4274540d1491d58e878a9edc0bdcba17ac
> Author: Andy Shevchenko 
> Date:   Wed Jan 10 19:40:15 2018 +0200
>
> x86: zImage: Propagate acpi_rsdp_addr to kernel via boot parameters
>
> after upstream got eventually the Linux kernel
>
> commit e6e094e053af75cbc164e950814d3d084fb1e698
> Author: Juergen Gross 
> Date:   Tue Nov 20 08:25:29 2018 +0100
>
> x86/acpi, x86/boot: Take RSDP address from boot params if available
>
> Signed-off-by: Andy Shevchenko 
> ---
>  arch/x86/include/asm/bootparam.h | 3 ++-
>  arch/x86/lib/zimage.c| 4 
>  2 files changed, 6 insertions(+), 1 deletion(-)
>

Reviewed-by: Bin Meng 
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[U-Boot] [PATCH v1] x86: zImage: Propagate acpi_rsdp_addr to kernel via boot parameters

[Andy Shevchenko]

This is reincarnation of the U-Boot

commit 3469bf4274540d1491d58e878a9edc0bdcba17ac
Author: Andy Shevchenko 
Date:   Wed Jan 10 19:40:15 2018 +0200

x86: zImage: Propagate acpi_rsdp_addr to kernel via boot parameters

after upstream got eventually the Linux kernel

commit e6e094e053af75cbc164e950814d3d084fb1e698
Author: Juergen Gross 
Date:   Tue Nov 20 08:25:29 2018 +0100

x86/acpi, x86/boot: Take RSDP address from boot params if available

Signed-off-by: Andy Shevchenko 
---
 arch/x86/include/asm/bootparam.h | 3 ++-
 arch/x86/lib/zimage.c| 4 
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/bootparam.h b/arch/x86/include/asm/bootparam.h
index dfbd4b4bba..d961dddc9e 100644
--- a/arch/x86/include/asm/bootparam.h
+++ b/arch/x86/include/asm/bootparam.h
@@ -94,7 +94,8 @@ struct boot_params {
__u8  _pad2[4]; /* 0x054 */
__u64  tboot_addr;  /* 0x058 */
struct ist_info ist_info;   /* 0x060 */
-   __u8  _pad3[16];/* 0x070 */
+   __u64 acpi_rsdp_addr;   /* 0x070 */
+   __u8  _pad3[8]; /* 0x078 */
__u8  hd0_info[16]; /* obsolete! */ /* 0x080 */
__u8  hd1_info[16]; /* obsolete! */ /* 0x090 */
struct sys_desc_table sys_desc_table;   /* 0x0a0 */
diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c
index 6a6258a505..d07041fd4c 100644
--- a/arch/x86/lib/zimage.c
+++ b/arch/x86/lib/zimage.c
@@ -288,6 +288,10 @@ int setup_zimage(struct boot_params *setup_base, char 
*cmd_line, int auto_boot,
hdr->hardware_subarch = X86_SUBARCH_INTEL_MID;
 #endif
 
+#ifdef CONFIG_GENERATE_ACPI_TABLE
+   setup_base->acpi_rsdp_addr = acpi_get_rsdp_addr();
+#endif
+
setup_device_tree(hdr, (const void *)env_get_hex("fdtaddr", 0));
setup_video(&setup_base->screen_info);
 
-- 
2.23.0

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