[PATCH 3/3] ARM: imx: Add support for detecting primary/secondary bmode on MX8M

[Marek Vasut]

From: Fedor Ross <fedor.ross at ifm.com>

Implement the 'getprisec' subcommand of 'bmode' command for i.MX8M by
reading out the ROM log events. This event is set by the BootROM if it
switched to the secondary copy due to primary copy being corrupted.

Signed-off-by: Fedor Ross <fedor.ross at ifm.com>
Signed-off-by: Marek Vasut <marex at denx.de>
---
Cc: Fabio Estevam <festevam at gmail.com>
Cc: Peng Fan <peng.fan at nxp.com>
Cc: Stefano Babic <sbabic at denx.de>
---
 arch/arm/mach-imx/Kconfig     | 2 +-
 arch/arm/mach-imx/imx8m/soc.c | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index d94b5828d0d..982d542b1c8 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -70,7 +70,7 @@ config CSF_SIZE
 config CMD_BMODE
 	bool "Support the 'bmode' command"
 	default y
-	depends on ARCH_MX7 || ARCH_MX6 || ARCH_MX5
+	depends on ARCH_IMX8M || ARCH_MX7 || ARCH_MX6 || ARCH_MX5
 	help
 	  This enables the 'bmode' (bootmode) command for forcing
 	  a boot from specific media.
diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c
index 2234ef947a1..10e5aeb48a2 100644
--- a/arch/arm/mach-imx/imx8m/soc.c
+++ b/arch/arm/mach-imx/imx8m/soc.c
@@ -726,6 +726,11 @@ int spl_mmc_emmc_boot_partition(struct mmc *mmc)
 
 	return part;
 }
+
+int boot_mode_getprisec(void)
+{
+	return !!imx8m_detect_secondary_image_boot();
+}
 #endif
 
 #if defined(CONFIG_IMX8MN) || defined(CONFIG_IMX8MP)
-- 
2.40.1