[PATCH 08/11] mach-snapdragon: Integrate reboot-mode handling

[Sam Day]

Hi Casey,

On Saturday, 6 June 2026 at 10:07 PM, Casey Connolly <casey.connolly at linaro.org> wrote:

> Hi Sam,
> 
> FYI this is superseded by
> https://lore.kernel.org/u-boot/20260521180549.282377-4-aswin.murugan@oss.qualcomm.com/
> 
> When you resend you can just indicate that your series is based on top
> of that one so it can get picked.

Thanks, I've queued that change for the v2.

Regards,
-Sam

> 
> Kind regards,
> 
> On 6/6/26 10:47, Sam Day via B4 Relay wrote:
> > From: Aswin Murugan <aswin.murugan at oss.qualcomm.com>
> >
> > Add reboot-mode detection and automatic fastboot entry to Qualcomm board
> > initialization. This enables 'reboot bootloader' functionality on
> > platforms with reboot-mode device tree configuration.
> >
> > Changes:
> > - Add qcom_handle_reboot_mode() call in board_late_init()
> > - Conditionally compile with CONFIG_DM_REBOOT_MODE
> > - Reorganize header includes
> >
> > Signed-off-by: Aswin Murugan <aswin.murugan at oss.qualcomm.com>
> > Reviewed-by: Simon Glass <sjg at chromium.org>
> > ---
> >   arch/arm/mach-snapdragon/board.c | 56 ++++++++++++++++++++++++++++++++--------
> >   1 file changed, 45 insertions(+), 11 deletions(-)
> >
> > diff --git a/arch/arm/mach-snapdragon/board.c b/arch/arm/mach-snapdragon/board.c
> > index 829a0109ac7..c37195def57 100644
> > --- a/arch/arm/mach-snapdragon/board.c
> > +++ b/arch/arm/mach-snapdragon/board.c
> > @@ -9,6 +9,15 @@
> >   #define LOG_CATEGORY LOGC_BOARD
> >   #define pr_fmt(fmt) "QCOM: " fmt
> >
> > +#include <command.h>
> > +#include <env.h>
> > +#include <fdt_support.h>
> > +#include <init.h>
> > +#include <lmb.h>
> > +#include <malloc.h>
> > +#include <sort.h>
> > +#include <time.h>
> > +#include <usb.h>
> >   #include <asm/armv8/mmu.h>
> >   #include <asm/gpio.h>
> >   #include <asm/io.h>
> > @@ -16,22 +25,14 @@
> >   #include <asm/system.h>
> >   #include <dm/device.h>
> >   #include <dm/pinctrl.h>
> > -#include <dm/uclass-internal.h>
> >   #include <dm/read.h>
> > -#include <power/regulator.h>
> > -#include <env.h>
> > -#include <fdt_support.h>
> > -#include <init.h>
> > +#include <dm/uclass-internal.h>
> >   #include <linux/arm-smccc.h>
> >   #include <linux/bug.h>
> >   #include <linux/psci.h>
> >   #include <linux/sizes.h>
> > -#include <lmb.h>
> > -#include <malloc.h>
> > -#include <fdt_support.h>
> > -#include <usb.h>
> > -#include <sort.h>
> > -#include <time.h>
> > +#include <power/regulator.h>
> > +#include <reboot-mode/reboot-mode.h>
> >
> >   #include "qcom-priv.h"
> >
> > @@ -506,6 +507,33 @@ void qcom_show_boot_source(void)
> >   	env_set("boot_source", name);
> >   }
> >
> > +/**
> > + * qcom_handle_reboot_mode() - Process reboot-mode detection and handle fastboot entry
> > + *
> > + * This function detects the reboot reason from PMIC registers and automatically
> > + * enters fastboot mode if the reboot reason was "bootloader".
> > + */
> > +static void qcom_handle_reboot_mode(void)
> > +{
> > +	struct udevice *reboot_dev;
> > +	const char *reboot_mode;
> > +	int ret;
> > +
> > +	ret = uclass_first_device_err(UCLASS_REBOOT_MODE, &reboot_dev);
> > +	if (ret)
> > +		return;
> > +
> > +	ret = dm_reboot_mode_update(reboot_dev);
> > +	if (ret)
> > +		return;
> > +
> > +	reboot_mode = env_get("reboot-mode");
> > +	if (reboot_mode && !strcmp(reboot_mode, "bootloader")) {
> > +		printf("Entering fastboot mode due to reboot reason...\n");
> > +		run_command("run fastboot", 0);
> > +	}
> > +}
> > +
> >   void __weak qcom_late_init(void)
> >   {
> >   }
> > @@ -575,6 +603,12 @@ int board_late_init(void)
> >   	qcom_late_init();
> >
> >   	qcom_show_boot_source();
> > +
> > +	/* Handle reboot-mode detection and fastboot entry */
> > +#if IS_ENABLED(CONFIG_DM_REBOOT_MODE)
> > +	qcom_handle_reboot_mode();
> > +#endif
> > +
> >   	/* Configure the dfu_string for capsule updates */
> >   	qcom_configure_capsule_updates();
> >
> >
> 
>