[PATCH 4/4] ARM: imx: Add support for reading out the primary/secondary bmode to MX7

[Marek Vasut]

Implement the 'getprisec' subcommand of 'bmode' command for i.MX7 by
reading out the SRC GPR10 bit 30. This bit is either set by the BootROM
if it switched to the secondary copy due to primary copy being corrupted
OR it can be overridden by the user.

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Fabio Estevam <festevam at gmail.com>
Cc: NXP i.MX U-Boot Team <uboot-imx at nxp.com>
Cc: Peng Fan <peng.fan at nxp.com>
Cc: Stefano Babic <sbabic at denx.de>
---
 arch/arm/mach-imx/mx7/soc.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm/mach-imx/mx7/soc.c b/arch/arm/mach-imx/mx7/soc.c
index b6fd25a991..c90f7354ea 100644
--- a/arch/arm/mach-imx/mx7/soc.c
+++ b/arch/arm/mach-imx/mx7/soc.c
@@ -419,6 +419,13 @@ const struct boot_mode soc_boot_modes[] = {
 	{"secondary",	MAKE_CFGVAL_SECONDARY_BOOT},
 	{NULL,		0},
 };
+
+int boot_mode_getprisec(void)
+{
+	struct src *psrc = (struct src *)SRC_BASE_ADDR;
+
+	return !!(readl(&psrc->gpr10) & IMX7_SRC_GPR10_PERSIST_SECONDARY_BOOT);
+}
 #endif
 
 void reset_misc(void)
-- 
2.27.0