armv8: layerscape: spl: Initialize QSPI AHB for QSPI boot

To get full access of QSPI space, initialize AHB interface.

Signed-off-by: York Sun <york.sun@nxp.com>

arch/arm/cpu/armv8/fsl-layerscape/spl.c

@@ -11,6 +11,7 @@
 #include <fsl_csu.h>
 #include <asm/arch/fdt.h>
 #include <asm/arch/ppa.h>
+#include <asm/arch/soc.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -102,6 +103,9 @@ void board_init_f(ulong dummy)
 	gd->arch.tlb_addr = (gd->ram_top - gd->arch.tlb_size) & ~(0x10000 - 1);
 	gd->arch.tlb_allocated = gd->arch.tlb_addr;
 #endif	/* CONFIG_SPL_FSL_LS_PPA */
+#if defined(CONFIG_QSPI_AHB_INIT) && defined(CONFIG_QSPI_BOOT)
+	qspi_ahb_init();
+#endif
 }
 
 #ifdef CONFIG_SPL_OS_BOOT

arch/arm/include/asm/arch-fsl-layerscape/soc.h

@@ -98,6 +98,9 @@ int board_setup_core_volt(u32 vdd);
 void init_pfe_scfg_dcfg_regs(void);
 #endif
 #endif
+#ifdef CONFIG_QSPI_AHB_INIT
+int qspi_ahb_init(void);
+#endif
 
 void cpu_name(char *name);
 #ifdef CONFIG_SYS_FSL_ERRATUM_A009635