add Dshanpi lpddr4 Init (#29)

* add Dshanpi lpddr4 Init

* update ddr4 init

* update lpddr4 init code

Author: Rongkangqi

buildroot-overlay/boot/uboot/u-boot-2022.10-overlay/board/canaan/k230_canmv_dongshanpi/Kconfig

@@ -24,5 +24,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
             bool "k230 canmv dongshanpi ddr3 2133"
         config CANMV_DONGSHANPI_LPDDR3_1866
             bool "k230 canmv dongshanpi ddr3 1866"
+	config CANMV_DONGSHANPI_LPDDR4_2667
+            bool "k230 canmv dongshanpi ddr4 2667"
     endchoice
 endif

buildroot-overlay/boot/uboot/u-boot-2022.10-overlay/board/canaan/k230_canmv_dongshanpi/Makefile

@@ -29,6 +29,8 @@ obj-$(CONFIG_CANMV_LPDDR3_2133) += gen_pilpddr3_2133.o   #ddr_init_2133.c
 
 obj-$(CONFIG_CANMV_DONGSHANPI_LPDDR3_2133) += gen_canmv_ddr_2133.lex.o
 
+obj-$(CONFIG_CANMV_DONGSHANPI_LPDDR4_2667) += gen_canmv_dongshanpi_lpddr4_2667.o
+
 $(obj)/gen_canmv_ddr_2133.lex.c: $(src)/canmv_ddr_init_2133.c   $(srctree)/arch/riscv/cpu/k230/ddr.sh
 	$(Q)($(srctree)/arch/riscv/cpu/k230/ddr.sh $< $@ 0x50000 0x53fff 0x54000 0x54359 || exit 1)
 
@@ -37,6 +39,9 @@ obj-$(CONFIG_CANMV_DONGSHANPI_LPDDR3_1866) += gen_canmv_ddr_1866.lex.o
 $(obj)/gen_canmv_ddr_1866.lex.c: $(src)/canmv_ddr_init_1866.c    $(srctree)/arch/riscv/cpu/k230/ddr.sh
 	$(Q)($(srctree)/arch/riscv/cpu/k230/ddr.sh $< $@ 0x50000 0x53fff 0x54000 0x54359 || exit 1)
 
+$(obj)/gen_canmv_dongshanpi_lpddr4_2667.c: $(src)/lpddr4_init_32_swap_2667.c    $(srctree)/arch/riscv/cpu/k230/ddr.sh
+	$(Q)($(srctree)/arch/riscv/cpu/k230/ddr.sh $< $@ 0x50000 0x53fff 0x54000 0x5433d  || exit 1)
+
 EXTRA_CFLAGS += -I$(srctree)/arch/$(ARCH)/cpu/k230/
 EXTRA_CFLAGS += -I$(srctree)/arch/$(ARCH)/cpu/k230/puf_fw/pufs_common
 EXTRA_CFLAGS += -I$(srctree)/arch/$(ARCH)/cpu/k230/puf_fw/pufs_crypto