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Message-ID: <79dcc638-873c-5ec6-e168-314a7a24eaf1@infradead.org>
Date: Wed, 2 Nov 2022 23:56:51 -0700
From: Randy Dunlap <rdunlap@...radead.org>
To: linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>
Cc: Rob Herring <robh+dt@...nel.org>,
Frank Rowand <frowand.list@...il.com>,
devicetree@...r.kernel.org, Rich Felker <dalias@...c.org>,
Yoshinori Sato <ysato@...rs.sourceforge.jp>,
Arnd Bergmann <arnd@...db.de>, linux-sh@...r.kernel.org
Subject: Re: [PATCH] sh: init: use OF_EARLY_FLATTREE for early init
Hi,
On 10/6/22 16:42, Randy Dunlap wrote:
> When CONFIG_OF_EARLY_FLATTREE and CONFIG_SH_DEVICE_TREE are not set,
> SH3 build fails with a call to early_init_dt_scan(), so in
> arch/sh/kernel/setup.c and arch/sh/kernel/head_32.S, use
> CONFIG_OF_EARLY_FLATTREE instead of CONFIG_OF_FLATTREE.
>
> Fixes this build error:
> ../arch/sh/kernel/setup.c: In function 'sh_fdt_init':
> ../arch/sh/kernel/setup.c:262:26: error: implicit declaration of function 'early_init_dt_scan' [-Werror=implicit-function-declaration]
> 262 | if (!dt_virt || !early_init_dt_scan(dt_virt)) {
>
> Fixes: 03767daa1387 ("sh: fix build regression with CONFIG_OF && !CONFIG_OF_FLATTREE")
> Fixes: eb6b6930a70f ("sh: fix memory corruption of unflattened device tree")
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: Frank Rowand <frowand.list@...il.com>
> Cc: devicetree@...r.kernel.org
> Cc: Rich Felker <dalias@...c.org>
> Cc: Yoshinori Sato <ysato@...rs.sourceforge.jp>
> Cc: Arnd Bergmann <arnd@...db.de>
> Cc: linux-sh@...r.kernel.org
Is anyone merging arch/sh/ patches now? or even commenting on them?
Thanks.
> ---
> arch/sh/kernel/head_32.S | 6 +++---
> arch/sh/kernel/setup.c | 4 ++--
> 2 files changed, 5 insertions(+), 5 deletions(-)
>
> --- a/arch/sh/kernel/setup.c
> +++ b/arch/sh/kernel/setup.c
> @@ -244,7 +244,7 @@ void __init __weak plat_early_device_set
> {
> }
>
> -#ifdef CONFIG_OF_FLATTREE
> +#ifdef CONFIG_OF_EARLY_FLATTREE
> void __ref sh_fdt_init(phys_addr_t dt_phys)
> {
> static int done = 0;
> @@ -326,7 +326,7 @@ void __init setup_arch(char **cmdline_p)
> /* Let earlyprintk output early console messages */
> sh_early_platform_driver_probe("earlyprintk", 1, 1);
>
> -#ifdef CONFIG_OF_FLATTREE
> +#ifdef CONFIG_OF_EARLY_FLATTREE
> #ifdef CONFIG_USE_BUILTIN_DTB
> unflatten_and_copy_device_tree();
> #else
> --- a/arch/sh/kernel/head_32.S
> +++ b/arch/sh/kernel/head_32.S
> @@ -64,7 +64,7 @@ ENTRY(_stext)
> ldc r0, r6_bank
> #endif
>
> -#ifdef CONFIG_OF_FLATTREE
> +#ifdef CONFIG_OF_EARLY_FLATTREE
> mov r4, r12 ! Store device tree blob pointer in r12
> #endif
>
> @@ -315,7 +315,7 @@ ENTRY(_stext)
> 10:
> #endif
>
> -#ifdef CONFIG_OF_FLATTREE
> +#ifdef CONFIG_OF_EARLY_FLATTREE
> mov.l 8f, r0 ! Make flat device tree available early.
> jsr @r0
> mov r12, r4
> @@ -346,7 +346,7 @@ ENTRY(stack_start)
> 5: .long start_kernel
> 6: .long cpu_init
> 7: .long init_thread_union
> -#if defined(CONFIG_OF_FLATTREE)
> +#if defined(CONFIG_OF_EARLY_FLATTREE)
> 8: .long sh_fdt_init
> #endif
>
--
~Randy
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