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From: Stephen Boyd <sboyd@kernel.org>
To: Rob Herring <robh+dt@kernel.org>
Cc: linux-kernel@vger.kernel.org, patches@lists.linux.dev,
	linux-um@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org, kunit-dev@googlegroups.com,
	linux-kselftest@vger.kernel.org, devicetree@vger.kernel.org,
	Frank Rowand <frowand.list@gmail.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>
Subject: [PATCH 1/6] arm64: Unconditionally call unflatten_device_tree()
Date: Fri, 12 Jan 2024 12:07:44 -0800	[thread overview]
Message-ID: <20240112200750.4062441-2-sboyd@kernel.org> (raw)
In-Reply-To: <20240112200750.4062441-1-sboyd@kernel.org>

Call this function unconditionally so that we can populate an empty DTB
on platforms that don't boot with a firmware provided or builtin DTB.
There's no harm in calling unflatten_device_tree() unconditionally. If
there isn't a valid initial_boot_params dtb then unflatten_device_tree()
returns early.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: <linux-arm-kernel@lists.infradead.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
---
 arch/arm64/kernel/setup.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 417a8a86b2db..ede3d59dabf0 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -351,8 +351,7 @@ void __init __no_sanitize_address setup_arch(char **cmdline_p)
 	/* Parse the ACPI tables for possible boot-time configuration */
 	acpi_boot_table_init();
 
-	if (acpi_disabled)
-		unflatten_device_tree();
+	unflatten_device_tree();
 
 	bootmem_init();
 
-- 
https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git/
https://git.kernel.org/pub/scm/linux/kernel/git/sboyd/spmi.git


WARNING: multiple messages have this Message-ID (diff)
From: Stephen Boyd <sboyd@kernel.org>
To: Rob Herring <robh+dt@kernel.org>
Cc: linux-kernel@vger.kernel.org, patches@lists.linux.dev,
	linux-um@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org, kunit-dev@googlegroups.com,
	linux-kselftest@vger.kernel.org, devicetree@vger.kernel.org,
	Frank Rowand <frowand.list@gmail.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>
Subject: [PATCH 1/6] arm64: Unconditionally call unflatten_device_tree()
Date: Fri, 12 Jan 2024 12:07:44 -0800	[thread overview]
Message-ID: <20240112200750.4062441-2-sboyd@kernel.org> (raw)
In-Reply-To: <20240112200750.4062441-1-sboyd@kernel.org>

Call this function unconditionally so that we can populate an empty DTB
on platforms that don't boot with a firmware provided or builtin DTB.
There's no harm in calling unflatten_device_tree() unconditionally. If
there isn't a valid initial_boot_params dtb then unflatten_device_tree()
returns early.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: <linux-arm-kernel@lists.infradead.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
---
 arch/arm64/kernel/setup.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 417a8a86b2db..ede3d59dabf0 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -351,8 +351,7 @@ void __init __no_sanitize_address setup_arch(char **cmdline_p)
 	/* Parse the ACPI tables for possible boot-time configuration */
 	acpi_boot_table_init();
 
-	if (acpi_disabled)
-		unflatten_device_tree();
+	unflatten_device_tree();
 
 	bootmem_init();
 
-- 
https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git/
https://git.kernel.org/pub/scm/linux/kernel/git/sboyd/spmi.git


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  reply	other threads:[~2024-01-12 20:07 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-12 20:07 [PATCH 0/6] of: populate of_root node if bootloader doesn't Stephen Boyd
2024-01-12 20:07 ` Stephen Boyd
2024-01-12 20:07 ` Stephen Boyd [this message]
2024-01-12 20:07   ` [PATCH 1/6] arm64: Unconditionally call unflatten_device_tree() Stephen Boyd
2024-01-15 17:57   ` Rob Herring
2024-01-15 17:57     ` Rob Herring
2024-01-16 11:51   ` Mark Rutland
2024-01-16 11:51     ` Mark Rutland
2024-01-16 14:13     ` Geert Uytterhoeven
2024-01-16 14:13       ` Geert Uytterhoeven
2024-01-18 15:23       ` Mark Rutland
2024-01-18 15:23         ` Mark Rutland
2024-01-18 16:22         ` Geert Uytterhoeven
2024-01-18 16:22           ` Geert Uytterhoeven
2024-01-17  1:27     ` Stephen Boyd
2024-01-17  1:27       ` Stephen Boyd
2024-01-17 17:54       ` Rob Herring
2024-01-17 17:54         ` Rob Herring
2024-01-17 23:00         ` Stephen Boyd
2024-01-17 23:00           ` Stephen Boyd
2024-01-18 15:26       ` Mark Rutland
2024-01-18 15:26         ` Mark Rutland
2024-01-18 16:23         ` Geert Uytterhoeven
2024-01-18 16:23           ` Geert Uytterhoeven
2024-01-19 23:10         ` Rob Herring
2024-01-19 23:10           ` Rob Herring
2024-01-12 20:07 ` [PATCH 2/6] um: " Stephen Boyd
2024-01-12 20:07   ` Stephen Boyd
2024-01-12 20:07 ` [PATCH 3/6] of: Always unflatten in unflatten_and_copy_device_tree() Stephen Boyd
2024-01-12 20:07   ` Stephen Boyd
2024-01-12 20:07 ` [PATCH 4/6] of: Create of_root if no dtb provided by firmware Stephen Boyd
2024-01-12 20:07   ` Stephen Boyd
2024-01-15 20:32   ` Rob Herring
2024-01-15 20:32     ` Rob Herring
2024-01-17  1:18     ` Stephen Boyd
2024-01-17  1:18       ` Stephen Boyd
2024-01-17 17:41       ` Rob Herring
2024-01-17 17:41         ` Rob Herring
2024-01-18  8:45         ` Geert Uytterhoeven
2024-01-18  8:45           ` Geert Uytterhoeven
2024-01-18 13:44           ` Rob Herring
2024-01-18 13:44             ` Rob Herring
2024-01-12 20:07 ` [PATCH 5/6] of: unittest: treat missing of_root as error instead of fixing up Stephen Boyd
2024-01-12 20:07   ` Stephen Boyd
2024-01-12 20:07 ` [PATCH 6/6] of: Add KUnit test to confirm DTB is loaded Stephen Boyd
2024-01-12 20:07   ` Stephen Boyd
2024-01-16  5:03   ` David Gow
2024-01-16  5:03     ` David Gow
2024-01-22 22:48     ` Stephen Boyd
2024-01-22 22:48       ` Stephen Boyd
2024-01-24  7:25       ` David Gow
2024-01-24  7:25         ` David Gow

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