powerpc/85xx: Add support for booting from NAND on MPC8572DS

Mimic support that exists on MPC8536DS on the MPC8572DS to allow booting
from NAND.

Signed-off-by: Jin Qing <b24347@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

2 files changed, 215 insertions, 0 deletions

diff --git a/nand_spl/board/freescale/mpc8572ds/Makefile b/nand_spl/board/freescale/mpc8572ds/Makefile
new file mode 100644
index 0000000..e2181e9
--- /dev/null
+++ b/nand_spl/board/freescale/mpc8572ds/Makefile
@@ -0,0 +1,133 @@
+#
+# (C) Copyright 2007
+# Stefan Roese, DENX Software Engineering, sr@denx.de.
+#
+# Copyright 2009-2010 Freescale Semiconductor, Inc.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+NAND_SPL := y
+CONFIG_SYS_TEXT_BASE_SPL := 0xfff00000
+PAD_TO := 0xfff01000
+
+include $(TOPDIR)/config.mk
+
+LDSCRIPT= $(TOPDIR)/$(CPUDIR)/u-boot-nand_spl.lds
+LDFLAGS	= -Bstatic -T $(LDSCRIPT) -Ttext $(CONFIG_SYS_TEXT_BASE_SPL) $(PLATFORM_LDFLAGS)
+AFLAGS	+= -DCONFIG_NAND_SPL
+CFLAGS	+= -DCONFIG_NAND_SPL
+
+SOBJS	= start.o resetvec.o
+COBJS	= cache.o cpu_init_early.o cpu_init_nand.o fsl_law.o law.o \
+	  nand_boot.o nand_boot_fsl_elbc.o ns16550.o tlb.o tlb_table.o
+
+SRCS	:= $(addprefix $(obj),$(SOBJS:.o=.S) $(COBJS:.o=.c))
+OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
+__OBJS	:= $(SOBJS) $(COBJS)
+LNDIR	:= $(OBJTREE)/nand_spl/board/$(BOARDDIR)
+
+nandobj	:= $(OBJTREE)/nand_spl/
+
+ALL	= $(nandobj)u-boot-spl $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin
+
+all:	$(obj).depend $(ALL)
+
+$(nandobj)u-boot-spl-16k.bin: $(nandobj)u-boot-spl
+	$(OBJCOPY) ${OBJCFLAGS} --pad-to=$(PAD_TO) -O binary $< $@
+
+$(nandobj)u-boot-spl.bin:	$(nandobj)u-boot-spl
+	$(OBJCOPY) ${OBJCFLAGS} -O binary $< $@
+
+$(nandobj)u-boot-spl:	$(OBJS)
+	cd $(LNDIR) && $(LD) $(LDFLAGS) $(__OBJS) $(PLATFORM_LIBS) \
+		-Map $(nandobj)u-boot-spl.map \
+		-o $(nandobj)u-boot-spl
+
+# create symbolic links for common files
+
+$(obj)cache.c:
+	@rm -f $(obj)cache.c
+	ln -sf $(SRCTREE)/arch/powerpc/lib/cache.c $(obj)cache.c
+
+$(obj)cpu_init_early.c:
+	@rm -f $(obj)cpu_init_early.c
+	ln -sf $(SRCTREE)/arch/powerpc/cpu/mpc85xx/cpu_init_early.c $(obj)cpu_init_early.c
+
+$(obj)cpu_init_nand.c:
+	@rm -f $(obj)cpu_init_nand.c
+	ln -sf $(SRCTREE)/arch/powerpc/cpu/mpc85xx/cpu_init_nand.c $(obj)cpu_init_nand.c
+
+$(obj)fsl_law.c:
+	@rm -f $(obj)fsl_law.c
+	ln -sf $(SRCTREE)/drivers/misc/fsl_law.c $(obj)fsl_law.c
+
+$(obj)law.c:
+	@rm -f $(obj)law.c
+	ln -sf $(SRCTREE)/board/$(BOARDDIR)/law.c $(obj)law.c
+
+$(obj)nand_boot_fsl_elbc.c:
+	@rm -f $(obj)nand_boot_fsl_elbc.c
+	ln -sf $(SRCTREE)/nand_spl/nand_boot_fsl_elbc.c \
+	       $(obj)nand_boot_fsl_elbc.c
+
+$(obj)ns16550.c:
+	@rm -f $(obj)ns16550.c
+	ln -sf $(SRCTREE)/drivers/serial/ns16550.c $(obj)ns16550.c
+
+$(obj)resetvec.S:
+	@rm -f $(obj)resetvec.S
+	ln -s $(SRCTREE)/$(CPUDIR)/resetvec.S $(obj)resetvec.S
+
+$(obj)fixed_ivor.S:
+	@rm -f $(obj)fixed_ivor.S
+	ln -sf $(SRCTREE)/arch/powerpc/cpu/mpc85xx/fixed_ivor.S $(obj)fixed_ivor.S
+
+$(obj)start.S: $(obj)fixed_ivor.S
+	@rm -f $(obj)start.S
+	ln -sf $(SRCTREE)/arch/powerpc/cpu/mpc85xx/start.S $(obj)start.S
+
+$(obj)tlb.c:
+	@rm -f $(obj)tlb.c
+	ln -sf $(SRCTREE)/arch/powerpc/cpu/mpc85xx/tlb.c $(obj)tlb.c
+
+$(obj)tlb_table.c:
+	@rm -f $(obj)tlb_table.c
+	ln -sf $(SRCTREE)/board/$(BOARDDIR)/tlb.c $(obj)tlb_table.c
+
+ifneq ($(OBJTREE), $(SRCTREE))
+$(obj)nand_boot.c:
+	@rm -f $(obj)nand_boot.c
+	ln -s $(SRCTREE)/nand_spl/board/$(BOARDDIR)/nand_boot.c $(obj)nand_boot.c
+endif
+
+#########################################################################
+
+$(obj)%.o:	$(obj)%.S
+	$(CC) $(AFLAGS) -c -o $@ $<
+
+$(obj)%.o:	$(obj)%.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/nand_spl/board/freescale/mpc8572ds/nand_boot.c b/nand_spl/board/freescale/mpc8572ds/nand_boot.c
new file mode 100644
index 0000000..7ca4d4d
--- /dev/null
+++ b/nand_spl/board/freescale/mpc8572ds/nand_boot.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2009-2010 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#include <common.h>
+#include <ns16550.h>
+#include <asm/io.h>
+#include <nand.h>
+
+u32 sysclk_tbl[] = {
+	33333000, 39999600, 49999500, 66666000,
+	83332500, 99999000, 133332000, 166665000
+};
+
+void board_init_f(ulong bootflag)
+{
+	int px_spd;
+	u32 plat_ratio, bus_clk, sys_clk;
+	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+
+#if defined(CONFIG_SYS_BR3_PRELIM) && defined(CONFIG_SYS_OR3_PRELIM)
+	/* for FPGA */
+	set_lbc_br(3, CONFIG_SYS_BR3_PRELIM);
+	set_lbc_or(3, CONFIG_SYS_OR3_PRELIM);
+#else
+#error CONFIG_SYS_BR3_PRELIM, CONFIG_SYS_OR3_PRELIM must be defined
+#endif
+
+	/* initialize selected port with appropriate baud rate */
+	px_spd = in_8((unsigned char *)(PIXIS_BASE + PIXIS_SPD));
+	sys_clk = sysclk_tbl[px_spd & PIXIS_SPD_SYSCLK_MASK];
+	plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
+	bus_clk = sys_clk * plat_ratio / 2;
+
+	NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
+			bus_clk / 16 / CONFIG_BAUDRATE);
+
+	puts("\nNAND boot... ");
+
+	/* copy code to RAM and jump to it - this should not return */
+	/* NOTE - code has to be copied out of NAND buffer before
+	 * other blocks can be read.
+	 */
+	relocate_code(CONFIG_SYS_NAND_U_BOOT_RELOC_SP, 0,
+			CONFIG_SYS_NAND_U_BOOT_RELOC);
+}
+
+void board_init_r(gd_t *gd, ulong dest_addr)
+{
+	nand_boot();
+}
+
+void putc(char c)
+{
+	if (c == '\n')
+		NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r');
+
+	NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c);
+}
+
+void puts(const char *str)
+{
+	while (*str)
+		putc(*str++);
+}