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Date: Thu, 4 Apr 2024 14:14:17 +0900
From: Yoshinori Sato <ysato@...rs.sourceforge.jp>
To: linux-sh@...r.kernel.org
Cc: Yoshinori Sato <ysato@...rs.sourceforge.jp>,
Damien Le Moal <dlemoal@...nel.org>,
Niklas Cassel <cassel@...nel.org>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
Thomas Gleixner <tglx@...utronix.de>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Lorenzo Pieralisi <lpieralisi@...nel.org>,
Krzysztof Wilczyński <kw@...ux.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jirislaby@...nel.org>,
Magnus Damm <magnus.damm@...il.com>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Rich Felker <dalias@...c.org>,
John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
Lee Jones <lee@...nel.org>,
Helge Deller <deller@....de>,
Heiko Stuebner <heiko.stuebner@...rry.de>,
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Sebastian Reichel <sre@...nel.org>,
Chris Morgan <macromorgan@...mail.com>,
Linus Walleij <linus.walleij@...aro.org>,
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Biju Das <biju.das.jz@...renesas.com>,
Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
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Subject: [RESEND v7 06/37] sh: kernel/setup Update DT support.
Fix extrnal fdt initialize and bootargs.
Signed-off-by: Yoshinori Sato <ysato@...rs.sourceforge.jp>
---
arch/sh/Kconfig | 23 +++++++++++------------
arch/sh/include/asm/setup.h | 1 +
arch/sh/kernel/setup.c | 36 +++++++++++++++++++++++-------------
3 files changed, 35 insertions(+), 25 deletions(-)
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 6711cde0d973..242cf30e704d 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -708,17 +708,22 @@ config ROMIMAGE_MMCIF
first part of the romImage which in turn loads the rest the kernel
image to RAM using the MMCIF hardware block.
+config CMDLINE
+ string "Kernel command line arguments string"
+ default "console=ttySC1,115200"
+
choice
prompt "Kernel command line"
- optional
- default CMDLINE_OVERWRITE
- depends on !OF || USE_BUILTIN_DTB
+ default CMDLINE_BOOTLOADER
+
+config CMDLINE_BOOTLOADER
+ bool "Use bootloader kernel arguments"
help
- Setting this option allows the kernel command line arguments
- to be set.
+ Uses the command-line options passed by the boot loader.
+ If boot loader dosen't provide kernel argments, Use built-in argments.
config CMDLINE_OVERWRITE
- bool "Overwrite bootloader kernel arguments"
+ bool "Overwrite built-in kernel arguments"
help
Given string will overwrite any arguments passed in by
a bootloader.
@@ -730,12 +735,6 @@ config CMDLINE_EXTEND
by a bootloader.
endchoice
-
-config CMDLINE
- string "Kernel command line arguments string"
- depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
- default "console=ttySC1,115200"
-
endmenu
menu "Bus options"
diff --git a/arch/sh/include/asm/setup.h b/arch/sh/include/asm/setup.h
index fc807011187f..84bb23a771f3 100644
--- a/arch/sh/include/asm/setup.h
+++ b/arch/sh/include/asm/setup.h
@@ -21,5 +21,6 @@
void sh_mv_setup(void);
void check_for_initrd(void);
void per_cpu_trap_init(void);
+void sh_fdt_init(phys_addr_t dt_phys);
#endif /* _SH_SETUP_H */
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index 620e5cf8ae1e..42e6292a40cf 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -30,6 +30,7 @@
#include <linux/memblock.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
+#include <linux/libfdt.h>
#include <linux/uaccess.h>
#include <uapi/linux/mount.h>
#include <asm/io.h>
@@ -269,8 +270,22 @@ void __ref sh_fdt_init(phys_addr_t dt_phys)
void __init setup_arch(char **cmdline_p)
{
+#if defined(CONFIG_OF) && defined(CONFIG_OF_EARLY_FLATTREE)
+ if (IS_ENABLED(CONFIG_USE_BUILTIN_DTB)) {
+ /* Relocate Embedded DTB */
+ unflatten_and_copy_device_tree();
+ } else if (initial_boot_params) {
+ /* Reserve external DTB area */
+ memblock_reserve(__pa(initial_boot_params),
+ fdt_totalsize(initial_boot_params));
+ unflatten_device_tree();
+ }
+ /* copy from /chosen/bootargs */
+ strscpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
+#endif
enable_mmu();
+#ifndef CONFIG_OF
ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
printk(KERN_NOTICE "Boot params:\n"
@@ -299,14 +314,17 @@ void __init setup_arch(char **cmdline_p)
bss_resource.start = virt_to_phys(__bss_start);
bss_resource.end = virt_to_phys(__bss_stop)-1;
-#ifdef CONFIG_CMDLINE_OVERWRITE
- strscpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
-#else
- strscpy(command_line, COMMAND_LINE, sizeof(command_line));
+#endif
+#if !defined(CONFIG_OF) || defined(CONFIG_USE_BUILTIN_DTB)
+ if (*COMMAND_LINE)
+ strscpy(command_line, COMMAND_LINE, sizeof(command_line));
+#endif
+ if (*command_line == '\0' || IS_ENABLED(CONFIG_CMDLINE_OVERWRITE))
+ /* Use built-in parameter */
+ strscpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
#ifdef CONFIG_CMDLINE_EXTEND
strlcat(command_line, " ", sizeof(command_line));
strlcat(command_line, CONFIG_CMDLINE, sizeof(command_line));
-#endif
#endif
/* Save unparsed command line copy for /proc/cmdline */
@@ -322,14 +340,6 @@ void __init setup_arch(char **cmdline_p)
/* Let earlyprintk output early console messages */
sh_early_platform_driver_probe("earlyprintk", 1, 1);
-#ifdef CONFIG_OF_EARLY_FLATTREE
-#ifdef CONFIG_USE_BUILTIN_DTB
- unflatten_and_copy_device_tree();
-#else
- unflatten_device_tree();
-#endif
-#endif
-
paging_init();
/* Perform the machine specific initialisation */
--
2.39.2
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