armv8: fsl-layerscale: Rewrite reserving memory for MC and debug server

MC and debug server are not board-specific. Move reserving memory to SoC
file, using the new board_reserve_ram_top function. Reduce debug server
memory by 2MB to make room for secure memory.

In the system with MC and debug server, the top of u-boot memory
is not the end of memory. PRAM is not used for this reservation.

Signed-off-by: York Sun <yorksun@freescale.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
index 87ccaf166f..6ea28ed5cb 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
@@ -636,3 +636,24 @@ void reset_cpu(ulong addr)
 	val |= 0x02;
 	scfg_out32(rstcr, val);
 }
+
+phys_size_t board_reserve_ram_top(phys_size_t ram_size)
+{
+	phys_size_t ram_top = ram_size;
+
+#ifdef CONFIG_SYS_MEM_TOP_HIDE
+#error CONFIG_SYS_MEM_TOP_HIDE not to be used together with this function
+#endif
+/* Carve the Debug Server private DRAM block from the end of DRAM */
+#ifdef CONFIG_FSL_DEBUG_SERVER
+	ram_top -= debug_server_get_dram_block_size();
+#endif
+
+/* Carve the MC private DRAM block from the end of DRAM */
+#ifdef CONFIG_FSL_MC_ENET
+	ram_top -= mc_get_dram_block_size();
+	ram_top &= ~(CONFIG_SYS_MC_RSV_MEM_ALIGN - 1);
+#endif
+
+	return ram_top;
+}