env: mmc: fix offsets relative to the end of the partition
According to the help text, you can set negative offsets to indicated
that the offset is relative to the end of the parition. But kconfig
doesn't let you specify negative hex values. I think this fell through
the cracks when converting the symbol from a '#define' to a kconfig
option.
Introduce a new boolean kconfig option to switch on the "relative to the
end" behavior.
Signed-off-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/env/mmc.c b/env/mmc.c
index 11375bd..46ffa63 100644
--- a/env/mmc.c
+++ b/env/mmc.c
@@ -29,11 +29,19 @@
#else
/* Default ENV offset when not defined in Device Tree */
+#if !defined(CONFIG_ENV_OFFSET_RELATIVE_END)
#define ENV_MMC_OFFSET CONFIG_ENV_OFFSET
+#else
+#define ENV_MMC_OFFSET (-(CONFIG_ENV_OFFSET))
+#endif
#if defined(CONFIG_ENV_OFFSET_REDUND)
+#if !defined(CONFIG_ENV_OFFSET_REDUND_RELATIVE_END)
#define ENV_MMC_OFFSET_REDUND CONFIG_ENV_OFFSET_REDUND
#else
+#define ENV_MMC_OFFSET_REDUND (-(CONFIG_ENV_OFFSET_REDUND))
+#endif
+#else
#define ENV_MMC_OFFSET_REDUND ENV_MMC_INVALID_OFFSET
#endif
#endif