]> git.sur5r.net Git - u-boot/commitdiff
powerpc/85xx: Add support for booting from NAND on MPC8572DS
authorKumar Gala <galak@kernel.crashing.org>
Fri, 12 Nov 2010 14:22:01 +0000 (08:22 -0600)
committerKumar Gala <galak@kernel.crashing.org>
Fri, 14 Jan 2011 07:32:18 +0000 (01:32 -0600)
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>
board/freescale/mpc8572ds/config.mk
board/freescale/mpc8572ds/tlb.c
boards.cfg
include/configs/MPC8572DS.h
nand_spl/board/freescale/mpc8572ds/Makefile [new file with mode: 0644]
nand_spl/board/freescale/mpc8572ds/nand_boot.c [new file with mode: 0644]

index 5413921a20ef3721acfffedba942ab7ac025d746..7fd64123df58103ddc1a5d879d9201d08abfbc7e 100644 (file)
@@ -1,5 +1,5 @@
 #
-# Copyright 2007-2008 Freescale Semiconductor, Inc.
+# Copyright 2007-2008,2010 Freescale Semiconductor, Inc.
 #
 # See file CREDITS for list of people who contributed to this
 # project.
 #
 # mpc8572ds board
 #
+ifndef NAND_SPL
+ifeq ($(CONFIG_NAND), y)
+LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-nand.lds
+endif
+endif
+
 RESET_VECTOR_ADDRESS = 0xeffffffc
index 6a2a0b57f530f179bdedc005cd9e13cf21444e59..575bdb55ab8b223898ce11f68c25855a35203abb 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright 2008 Freescale Semiconductor, Inc.
+ * Copyright 2008-2010 Freescale Semiconductor, Inc.
  *
  * (C) Copyright 2000
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
@@ -85,6 +85,18 @@ struct fsl_e_tlb_entry tlb_table[] = {
        SET_TLB_ENTRY(1, PIXIS_BASE, PIXIS_BASE_PHYS,
                      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
                      0, 8, BOOKE_PAGESZ_4K, 1),
+
+#if defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SYS_INIT_L2_ADDR)
+       /* *I*G - L2SRAM */
+       SET_TLB_ENTRY(1, CONFIG_SYS_INIT_L2_ADDR,
+                       CONFIG_SYS_INIT_L2_ADDR_PHYS,
+                       MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+                       0, 9, BOOKE_PAGESZ_256K, 1),
+       SET_TLB_ENTRY(1, CONFIG_SYS_INIT_L2_ADDR + 0x40000,
+                       CONFIG_SYS_INIT_L2_ADDR_PHYS + 0x40000,
+                       MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+                       0, 10, BOOKE_PAGESZ_256K, 1),
+#endif
 };
 
 int num_tlb_entries = ARRAY_SIZE(tlb_table);
index 0f2e1df08d328553ab9e3db9ade1e9e49cce43ae..3497408f38c7d966a8e50ce148f6c546281ed7b5 100644 (file)
@@ -473,6 +473,7 @@ MPC8569MDS_ATM               powerpc     mpc85xx     mpc8569mds          freesca
 MPC8569MDS_NAND              powerpc     mpc85xx     mpc8569mds          freescale      -           MPC8569MDS:NAND
 MPC8572DS                    powerpc     mpc85xx     mpc8572ds           freescale      -           MPC8572DS
 MPC8572DS_36BIT              powerpc     mpc85xx     mpc8572ds           freescale      -           MPC8572DS:36BIT
+MPC8572DS_NAND               powerpc     mpc85xx     mpc8572ds           freescale      -           MPC8572DS:NAND
 P1011RDB                     powerpc     mpc85xx     p1_p2_rdb           freescale      -           P1_P2_RDB:P1011
 P1011RDB_NAND                powerpc     mpc85xx     p1_p2_rdb           freescale      -           P1_P2_RDB:P1011,NAND
 P1011RDB_SDCARD              powerpc     mpc85xx     p1_p2_rdb           freescale      -           P1_P2_RDB:P1011,SDCARD
index 1ee95aed289d5add41d3aef13947b54ff4266a18..9d2e209d69159160dcce3b56e2d675a2ba3ed218 100644 (file)
 #define CONFIG_PHYS_64BIT
 #endif
 
+#ifdef CONFIG_NAND
+#define CONFIG_NAND_U_BOOT
+#define CONFIG_RAMBOOT_NAND
+#ifdef CONFIG_NAND_SPL
+#define CONFIG_SYS_TEXT_BASE_SPL 0xfff00000
+#define CONFIG_SYS_MONITOR_BASE        CONFIG_SYS_TEXT_BASE_SPL /* start of monitor */
+#else
+#define CONFIG_SYS_TEXT_BASE   0xf8f82000
+#endif /* CONFIG_NAND_SPL */
+#endif
+
+#ifndef CONFIG_SYS_TEXT_BASE
+#define CONFIG_SYS_TEXT_BASE   0xeff80000
+#endif
+
+#ifndef CONFIG_SYS_MONITOR_BASE
+#define CONFIG_SYS_MONITOR_BASE        CONFIG_SYS_TEXT_BASE    /* start of monitor */
+#endif
+
 /* High Level Configuration Options */
 #define CONFIG_BOOKE           1       /* BOOKE */
 #define CONFIG_E500            1       /* BOOKE e500 family */
 #define CONFIG_MPC8572DS       1
 #define CONFIG_MP              1       /* support multiple processors */
 
-#ifndef CONFIG_SYS_TEXT_BASE
-#define CONFIG_SYS_TEXT_BASE   0xeff80000
-#endif
-
 #define CONFIG_FSL_ELBC                1       /* Has Enhanced localbus controller */
 #define CONFIG_PCI             1       /* Enable PCI/PCIE */
 #define CONFIG_PCIE1           1       /* PCIE controler 1 (slot 1) */
 #define CONFIG_SYS_MEMTEST_END         0x7fffffff
 #define CONFIG_PANIC_HANG      /* do not reset board on panic */
 
+/*
+ * Config the L2 Cache as L2 SRAM
+ */
+#define CONFIG_SYS_INIT_L2_ADDR                0xf8f80000
+#ifdef CONFIG_PHYS_64BIT
+#define CONFIG_SYS_INIT_L2_ADDR_PHYS           0xff8f80000ull
+#else
+#define CONFIG_SYS_INIT_L2_ADDR_PHYS           CONFIG_SYS_INIT_L2_ADDR
+#endif
+#define CONFIG_SYS_L2_SIZE             (512 << 10)
+#define CONFIG_SYS_INIT_L2_END (CONFIG_SYS_INIT_L2_ADDR + CONFIG_SYS_L2_SIZE)
+
 /*
  * Base addresses -- Note these are effective addresses where the
  * actual resources get mapped (not physical addresses)
  */
-#define CONFIG_SYS_CCSRBAR_DEFAULT     0xff700000      /* CCSRBAR Default */
 #define CONFIG_SYS_CCSRBAR             0xffe00000      /* relocated CCSRBAR */
 #ifdef CONFIG_PHYS_64BIT
 #define CONFIG_SYS_CCSRBAR_PHYS                0xfffe00000ull  /* physical addr of CCSRBAR */
 #endif
 #define CONFIG_SYS_IMMR                CONFIG_SYS_CCSRBAR      /* PQII uses CONFIG_SYS_IMMR */
 
+#if defined(CONFIG_RAMBOOT_NAND) && !defined(CONFIG_NAND_SPL)
+#define CONFIG_SYS_CCSRBAR_DEFAULT             CONFIG_SYS_CCSRBAR
+#else
+#define CONFIG_SYS_CCSRBAR_DEFAULT     0xff700000      /* CCSRBAR Default */
+#endif
+
 /* DDR Setup */
 #define CONFIG_VERY_BIG_RAM
 #define CONFIG_FSL_DDR2
 #define CONFIG_SYS_FLASH_BASE_PHYS     CONFIG_SYS_FLASH_BASE
 #endif
 
-#define CONFIG_SYS_BR0_PRELIM  (BR_PHYS_ADDR((CONFIG_SYS_FLASH_BASE_PHYS + 0x8000000)) | BR_PS_16 | BR_V)
-#define CONFIG_SYS_OR0_PRELIM  0xf8000ff7
+
+#define CONFIG_FLASH_BR_PRELIM \
+       (BR_PHYS_ADDR((CONFIG_SYS_FLASH_BASE_PHYS + 0x8000000)) \
+       | BR_PS_16 | BR_V)
+#define CONFIG_FLASH_OR_PRELIM 0xf8000ff7
 
 #define CONFIG_SYS_BR1_PRELIM  (BR_PHYS_ADDR(CONFIG_SYS_FLASH_BASE_PHYS) | BR_PS_16 | BR_V)
 #define CONFIG_SYS_OR1_PRELIM  0xf8000ff7
 #define CONFIG_SYS_FLASH_ERASE_TOUT    60000           /* Flash Erase Timeout (ms) */
 #define CONFIG_SYS_FLASH_WRITE_TOUT    500             /* Flash Write Timeout (ms) */
 
-#define CONFIG_SYS_MONITOR_BASE        CONFIG_SYS_TEXT_BASE    /* start of monitor */
+#if defined(CONFIG_RAMBOOT_NAND)
+#define CONFIG_SYS_RAMBOOT
+#define CONFIG_SYS_EXTRA_ENV_RELOC
+#else
+#undef CONFIG_SYS_RAMBOOT
+#endif
 
 #define CONFIG_FLASH_CFI_DRIVER
 #define CONFIG_SYS_FLASH_CFI
 #define PIXIS_VWATCH           0x24    /* Watchdog Register */
 #define PIXIS_LED              0x25    /* LED Register */
 
+#define PIXIS_SPD_SYSCLK_MASK          0x7             /* SYSCLK option */
+
 /* old pixis referenced names */
 #define PIXIS_VCLKH            0x19    /* VELA VCLKH register */
 #define PIXIS_VCLKL            0x1A    /* VELA VCLKL register */
 #define CONFIG_SYS_MONITOR_LEN         (256 * 1024) /* Reserve 256 kB for Mon */
 #define CONFIG_SYS_MALLOC_LEN          (1024 * 1024)   /* Reserved for malloc */
 
+#ifndef CONFIG_NAND_SPL
 #define CONFIG_SYS_NAND_BASE           0xffa00000
 #ifdef CONFIG_PHYS_64BIT
 #define CONFIG_SYS_NAND_BASE_PHYS      0xfffa00000ull
 #else
 #define CONFIG_SYS_NAND_BASE_PHYS      CONFIG_SYS_NAND_BASE
 #endif
+#else
+#define CONFIG_SYS_NAND_BASE           0xfff00000
+#ifdef CONFIG_PHYS_64BIT
+#define CONFIG_SYS_NAND_BASE_PHYS      0xffff00000ull
+#else
+#define CONFIG_SYS_NAND_BASE_PHYS      CONFIG_SYS_NAND_BASE
+#endif
+#endif
+
 #define CONFIG_SYS_NAND_BASE_LIST     { CONFIG_SYS_NAND_BASE,\
                                CONFIG_SYS_NAND_BASE + 0x40000, \
                                CONFIG_SYS_NAND_BASE + 0x80000,\
 #define CONFIG_NAND_FSL_ELBC   1
 #define CONFIG_SYS_NAND_BLOCK_SIZE    (128 * 1024)
 
+/* NAND boot: 4K NAND loader config */
+#define CONFIG_SYS_NAND_SPL_SIZE       0x1000
+#define CONFIG_SYS_NAND_U_BOOT_SIZE    ((512 << 10) - 0x2000)
+#define CONFIG_SYS_NAND_U_BOOT_DST     (CONFIG_SYS_INIT_L2_ADDR)
+#define CONFIG_SYS_NAND_U_BOOT_START \
+               (CONFIG_SYS_INIT_L2_ADDR + CONFIG_SYS_NAND_SPL_SIZE)
+#define CONFIG_SYS_NAND_U_BOOT_OFFS    (0)
+#define CONFIG_SYS_NAND_U_BOOT_RELOC   (CONFIG_SYS_INIT_L2_END - 0x2000)
+#define CONFIG_SYS_NAND_U_BOOT_RELOC_SP        ((CONFIG_SYS_INIT_L2_END - 1) & ~0xF)
+
+
 /* NAND flash config */
 #define CONFIG_NAND_BR_PRELIM  (BR_PHYS_ADDR(CONFIG_SYS_NAND_BASE_PHYS) \
                               | (2<<BR_DECC_SHIFT)    /* Use HW ECC */ \
                               | OR_FCM_TRLX \
                               | OR_FCM_EHTR)
 
+#ifdef CONFIG_RAMBOOT_NAND
+#define CONFIG_SYS_BR0_PRELIM  CONFIG_NAND_BR_PRELIM   /* NAND Base Address */
+#define CONFIG_SYS_OR0_PRELIM  CONFIG_NAND_OR_PRELIM   /* NAND Options */
+#define CONFIG_SYS_BR2_PRELIM  CONFIG_FLASH_BR_PRELIM  /* NOR Base Address */
+#define CONFIG_SYS_OR2_PRELIM  CONFIG_FLASH_OR_PRELIM  /* NOR Options */
+#else
+#define CONFIG_SYS_BR0_PRELIM  CONFIG_FLASH_BR_PRELIM  /* NOR Base Address */
+#define CONFIG_SYS_OR0_PRELIM  CONFIG_FLASH_OR_PRELIM  /* NOR Options */
 #define CONFIG_SYS_BR2_PRELIM  CONFIG_NAND_BR_PRELIM  /* NAND Base Address */
 #define CONFIG_SYS_OR2_PRELIM  CONFIG_NAND_OR_PRELIM  /* NAND Options */
-
+#endif
 #define CONFIG_SYS_BR4_PRELIM  (BR_PHYS_ADDR((CONFIG_SYS_NAND_BASE_PHYS + 0x40000))\
                               | (2<<BR_DECC_SHIFT)    /* Use HW ECC */ \
                               | BR_PS_8               /* Port Size = 8 bit */ \
 #define CONFIG_SYS_NS16550_SERIAL
 #define CONFIG_SYS_NS16550_REG_SIZE    1
 #define CONFIG_SYS_NS16550_CLK         get_bus_freq(0)
+#ifdef CONFIG_NAND_SPL
+#define CONFIG_NS16550_MIN_FUNCTIONS
+#endif
 
 #define CONFIG_SYS_BAUDRATE_TABLE      \
        {300, 600, 1200, 2400, 4800, 9600, 19200, 38400,115200}
 /*
  * Environment
  */
-#define CONFIG_ENV_IS_IN_FLASH 1
-#if CONFIG_SYS_MONITOR_BASE > 0xfff80000
-#define CONFIG_ENV_ADDR                0xfff80000
+
+#if defined(CONFIG_SYS_RAMBOOT)
+#if defined(CONFIG_RAMBOOT_NAND)
+#define CONFIG_ENV_IS_IN_NAND  1
+#define CONFIG_ENV_SIZE        CONFIG_SYS_NAND_BLOCK_SIZE
+#define CONFIG_ENV_OFFSET      ((512 * 1024)\
+                               + CONFIG_SYS_NAND_BLOCK_SIZE)
+#endif
+
 #else
-#define CONFIG_ENV_ADDR                (CONFIG_SYS_MONITOR_BASE - CONFIG_ENV_SECT_SIZE)
+       #define CONFIG_ENV_IS_IN_FLASH  1
+       #if CONFIG_SYS_MONITOR_BASE > 0xfff80000
+       #define CONFIG_ENV_ADDR 0xfff80000
+       #else
+       #define CONFIG_ENV_ADDR (CONFIG_SYS_MONITOR_BASE - CONFIG_ENV_SECT_SIZE)
+       #endif
+       #define CONFIG_ENV_SIZE 0x2000
+       #define CONFIG_ENV_SECT_SIZE    0x20000 /* 128K (one sector) */
 #endif
-#define CONFIG_ENV_SIZE                0x2000
-#define CONFIG_ENV_SECT_SIZE   0x20000 /* 128K (one sector) */
 
 #define CONFIG_LOADS_ECHO      1       /* echo on for serial download */
 #define CONFIG_SYS_LOADS_BAUD_CHANGE   1       /* allow baudrate change */
diff --git a/nand_spl/board/freescale/mpc8572ds/Makefile b/nand_spl/board/freescale/mpc8572ds/Makefile
new file mode 100644 (file)
index 0000000..e2181e9
--- /dev/null
@@ -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 (file)
index 0000000..7ca4d4d
--- /dev/null
@@ -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++);
+}