[PATCH v3] arm: imx8m: add boot_device and boot_instance env variables

[Peng Fan]

Hi William,

Thanks for your patch!

> Subject: [PATCH v3] arm: imx8m: add boot_device and boot_instance
> env variables
> 
> Some SoCs have supports for 'boot_device' and 'boot_instance'
> environment variable. Those variables help to choose the right boot
> media during the execution of the boot command.
> 
> The i.MX8M SoC doesn't have support for those variables but provides
> internally all the needed information to create those variables.
> 
> Fill this lack adding support for those variables in the i.MX8M SoC.
> 
> Signed-off-by: William MARTIN <william.martin at muxen.fr>
> ---

No change log here.

>  arch/arm/mach-imx/imx8m/soc.c | 72
> +++++++++++++++++++++++++++++++++++
>  1 file changed, 72 insertions(+)
> 
> diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-
> imx/imx8m/soc.c index 1fe083ae94f..498b565183b 100644
> --- a/arch/arm/mach-imx/imx8m/soc.c
> +++ b/arch/arm/mach-imx/imx8m/soc.c
> @@ -1472,6 +1472,76 @@ void reset_cpu(void)  #endif
> 
>  #if IS_ENABLED(CONFIG_ARCH_MISC_INIT)
> +static void setup_boot_mode(void)
> +{
> +       enum boot_device dev = get_boot_device();
> +
> +       log_debug("setup_boot_mode = %u\n", dev);
> +
> +       switch (dev) {
> +       case USB_BOOT:
> +               env_set("boot_device", "usb");
> +               env_set("boot_instance", "0");
> +               break;
> +
> +       case USB2_BOOT:
> +               env_set("boot_device", "usb");
> +               env_set("boot_instance", "1");
> +               break;
> +
> +       case QSPI_BOOT:
> +               env_set("boot_device", "flexspi");

i.MX8MQ does not have flexspi. It is qspi.
i.MX8MM/N/P has flexspi.

Regards
Peng.

> +               env_set("boot_instance", "0");
> +               break;
> +
> +       case SPI_NOR_BOOT:
> +               env_set("boot_device", "spi");
> +               env_set("boot_instance", "0");
> +               break;
> +
> +       case NAND_BOOT:
> +               env_set("boot_device", "nand");
> +               env_set("boot_instance", "0");
> +               break;
> +
> +       case SD1_BOOT:
> +               env_set("boot_device", "sdcard");
> +               env_set("boot_instance", "0");
> +               break;
> +
> +       case SD2_BOOT:
> +               env_set("boot_device", "sdcard");
> +               env_set("boot_instance", "1");
> +               break;
> +
> +       case SD3_BOOT:
> +               env_set("boot_device", "sdcard");
> +               env_set("boot_instance", "2");
> +               break;
> +
> +       case MMC1_BOOT:
> +               env_set("boot_device", "mmc");
> +               env_set("boot_instance", "0");
> +               break;
> +
> +       case MMC2_BOOT:
> +               env_set("boot_device", "mmc");
> +               env_set("boot_instance", "1");
> +               break;
> +
> +       case MMC3_BOOT:
> +               env_set("boot_device", "mmc");
> +               env_set("boot_instance", "2");
> +               break;
> +
> +       default:
> +               env_set("boot_device", "invalid");
> +               env_set("boot_instance", "");
> +               log_err("unexpected boot mode = %x\n", dev);
> +               break;
> +       }
> +}
> +
>  int arch_misc_init(void)
>  {
>         if (IS_ENABLED(CONFIG_FSL_CAAM)) { @@ -1483,6 +1553,8 @@
> int arch_misc_init(void)
>                         printf("Failed to initialize caam_jr: %d\n", ret);
>         }
> 
> +       setup_boot_mode();
> +
>         return 0;
>  }
>  #endif
> --
> 2.47.3