ARM: imx: Add support for reading out the primary/secondary bmode to MX7

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@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP i.MX U-Boot Team <uboot-imx@nxp.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Reviewed-by: Stefano Babic <sbabic@denx.de>

diff --git a/arch/arm/mach-imx/mx7/soc.c b/arch/arm/mach-imx/mx7/soc.c
index b70ef80131ec8a7a16324581ad543dd0fca65c7b..d0385b36e43a9565131ff2fd44446779920f03c2 100644 (file)
--- a/arch/arm/mach-imx/mx7/soc.c
+++ b/arch/arm/mach-imx/mx7/soc.c
@@ -418,6 +418,13 @@ 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)