arm: bootm: Disable LMB reservation for command line and board info on arm64

On arm64, board info is not applicable and kernel command line patched into
the DT, so the LMB reservation here makes no sense anymore. On legacy arm32,
this might still be necessary on systems which do not use DT or use legacy
ATAGS. Disable this LMB reservation on arm64.

This also permits Linux DT to specify reserved memory node at address close
to the end of DRAM bank, i.e. overlaping with U-Boot location. Since after
boot, U-Boot will be no more, this is OK.

Signed-off-by: Marek Vasut <[email protected]>
Cc: Hai Pham <[email protected]>
Cc: Simon Goldschmidt <[email protected]>
Cc: Stephen Warren <[email protected]>
Cc: Tom Rini <[email protected]>

diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index f60ee3a7e6a66aa339c5b91028f795eba27e6dbf..23b99a541cb477dc17cd44473aff3531d444c941 100644 (file)
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -43,6 +43,7 @@ DECLARE_GLOBAL_DATA_PTR;
 
 static struct tag *params;
 
+#ifndef CONFIG_ARM64
 static ulong get_sp(void)
 {
        ulong ret;
@@ -86,6 +87,7 @@ void arch_lmb_reserve(struct lmb *lmb)
                break;
        }
 }
+#endif
 
 __weak void board_quiesce_devices(void)
 {