mpc83xx: Add the support of MPC837xEMDS board

The MPC837xEMDS board support:
* DDR2 400MHz hardcoded and SPD init
* Local bus NOR Flash
* I2C, UART, MII and RTC
* eTSEC RGMII
* PCI host

Signed-off-by: Dave Liu <daveliu@freescale.com>

4 files changed, 287 insertions, 0 deletions

diff --git a/board/freescale/mpc837xemds/Makefile b/board/freescale/mpc837xemds/Makefile
new file mode 100644
index 0000000..5ec7a87
--- /dev/null
+++ b/board/freescale/mpc837xemds/Makefile
@@ -0,0 +1,50 @@
+#
+# (C) Copyright 2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# 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
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(BOARD).a
+
+COBJS	:= $(BOARD).o pci.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/freescale/mpc837xemds/config.mk b/board/freescale/mpc837xemds/config.mk
new file mode 100644
index 0000000..63c5fc3
--- /dev/null
+++ b/board/freescale/mpc837xemds/config.mk
@@ -0,0 +1,28 @@
+#
+# (C) Copyright 2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# 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
+#
+
+#
+# MPC837xEMDS
+#
+
+TEXT_BASE = 0xFE000000
diff --git a/board/freescale/mpc837xemds/mpc837xemds.c b/board/freescale/mpc837xemds/mpc837xemds.c
new file mode 100644
index 0000000..0e4ec02
--- /dev/null
+++ b/board/freescale/mpc837xemds/mpc837xemds.c
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2007 Freescale Semiconductor, Inc.
+ * Dave Liu <daveliu@freescale.com>
+ *
+ * CREDITS: Kim Phillips contribute to LIBFDT code
+ *
+ * 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.
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <spd.h>
+#if defined(CONFIG_SPD_EEPROM)
+#include <spd_sdram.h>
+#endif
+#if defined(CONFIG_OF_FLAT_TREE)
+#include <ft_build.h>
+#elif defined(CONFIG_OF_LIBFDT)
+#include <libfdt.h>
+#endif
+#if defined(CONFIG_PQ_MDS_PIB)
+#include "../common/pq-mds-pib.h"
+#endif
+
+int board_early_init_f(void)
+{
+	u8 *bcsr = (u8 *)CFG_BCSR;
+
+	/* Enable flash write */
+	bcsr[0x9] &= ~0x04;
+	/* Clear all of the interrupt of BCSR */
+	bcsr[0xe] = 0xff;
+
+	return 0;
+}
+
+int board_early_init_r(void)
+{
+#ifdef CONFIG_PQ_MDS_PIB
+	pib_init();
+#endif
+	return 0;
+}
+
+#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRC)
+extern void ddr_enable_ecc(unsigned int dram_size);
+#endif
+int fixed_sdram(void);
+
+long int initdram(int board_type)
+{
+	volatile immap_t *im = (immap_t *) CFG_IMMR;
+	u32 msize = 0;
+
+	if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
+		return -1;
+
+#if defined(CONFIG_SPD_EEPROM)
+	msize = spd_sdram();
+#else
+	msize = fixed_sdram();
+#endif
+
+#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRC)
+	/* Initialize DDR ECC byte */
+	ddr_enable_ecc(msize * 1024 * 1024);
+#endif
+
+	/* return total bus DDR size(bytes) */
+	return (msize * 1024 * 1024);
+}
+
+#if !defined(CONFIG_SPD_EEPROM)
+/*************************************************************************
+ *  fixed sdram init -- doesn't use serial presence detect.
+ ************************************************************************/
+int fixed_sdram(void)
+{
+	volatile immap_t *im = (immap_t *) CFG_IMMR;
+	u32 msize = CFG_DDR_SIZE * 1024 * 1024;
+	u32 msize_log2 = __ilog2(msize);
+
+	im->sysconf.ddrlaw[0].bar = CFG_DDR_SDRAM_BASE >> 12;
+	im->sysconf.ddrlaw[0].ar = LBLAWAR_EN | (msize_log2 - 1);
+
+#if (CFG_DDR_SIZE != 512)
+#warning Currenly any ddr size other than 512 is not supported
+#endif
+	im->sysconf.ddrcdr = CFG_DDRCDR_VALUE;
+	udelay(50000);
+
+	im->ddr.sdram_clk_cntl = CFG_DDR_SDRAM_CLK_CNTL;
+	udelay(1000);
+
+	im->ddr.csbnds[0].csbnds = CFG_DDR_CS0_BNDS;
+	im->ddr.cs_config[0] = CFG_DDR_CS0_CONFIG;
+	udelay(1000);
+
+	im->ddr.timing_cfg_0 = CFG_DDR_TIMING_0;
+	im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1;
+	im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2;
+	im->ddr.timing_cfg_3 = CFG_DDR_TIMING_3;
+	im->ddr.sdram_cfg = CFG_DDR_SDRAM_CFG;
+	im->ddr.sdram_cfg2 = CFG_DDR_SDRAM_CFG2;
+	im->ddr.sdram_mode = CFG_DDR_MODE;
+	im->ddr.sdram_mode2 = CFG_DDR_MODE2;
+	im->ddr.sdram_interval = CFG_DDR_INTERVAL;
+	__asm__ __volatile__("sync");
+	udelay(1000);
+
+	im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
+	udelay(2000);
+	return CFG_DDR_SIZE;
+}
+#endif /*!CFG_SPD_EEPROM */
+
+int checkboard(void)
+{
+	puts("Board: Freescale MPC837xEMDS\n");
+	return 0;
+}
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+void ft_board_setup(void *blob, bd_t *bd)
+{
+#if defined(CONFIG_OF_FLAT_TREE)
+	u32 *p;
+	int len;
+
+	p = ft_get_prop(blob, "/memory/reg", &len);
+	if (p != NULL) {
+		*p++ = cpu_to_be32(bd->bi_memstart);
+		*p = cpu_to_be32(bd->bi_memsize);
+	}
+#endif
+	ft_cpu_setup(blob, bd);
+#ifdef CONFIG_PCI
+	ft_pci_setup(blob, bd);
+#endif
+}
+#endif /* CONFIG_OF_BOARD_SETUP */
diff --git a/board/freescale/mpc837xemds/pci.c b/board/freescale/mpc837xemds/pci.c
new file mode 100644
index 0000000..ab90979
--- /dev/null
+++ b/board/freescale/mpc837xemds/pci.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2007 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.
+ */
+
+#include <asm/mmu.h>
+#include <asm/io.h>
+#include <common.h>
+#include <mpc83xx.h>
+#include <pci.h>
+#include <i2c.h>
+#include <asm/fsl_i2c.h>
+
+#if defined(CONFIG_PCI)
+static struct pci_region pci_regions[] = {
+	{
+		bus_start: CFG_PCI_MEM_BASE,
+		phys_start: CFG_PCI_MEM_PHYS,
+		size: CFG_PCI_MEM_SIZE,
+		flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
+	},
+	{
+		bus_start: CFG_PCI_MMIO_BASE,
+		phys_start: CFG_PCI_MMIO_PHYS,
+		size: CFG_PCI_MMIO_SIZE,
+		flags: PCI_REGION_MEM
+	},
+	{
+		bus_start: CFG_PCI_IO_BASE,
+		phys_start: CFG_PCI_IO_PHYS,
+		size: CFG_PCI_IO_SIZE,
+		flags: PCI_REGION_IO
+	}
+};
+
+void pci_init_board(void)
+{
+	volatile immap_t *immr = (volatile immap_t *)CFG_IMMR;
+	volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
+	volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
+	struct pci_region *reg[] = { pci_regions };
+
+	/* Enable all 5 PCI_CLK_OUTPUTS */
+	clk->occr |= 0xf8000000;
+	udelay(2000);
+
+	/* Configure PCI Local Access Windows */
+	pci_law[0].bar = CFG_PCI_MEM_PHYS & LAWBAR_BAR;
+	pci_law[0].ar = LBLAWAR_EN | LBLAWAR_512MB;
+
+	pci_law[1].bar = CFG_PCI_IO_PHYS & LAWBAR_BAR;
+	pci_law[1].ar = LBLAWAR_EN | LBLAWAR_1MB;
+
+	udelay(2000);
+
+	mpc83xx_pci_init(1, reg, 0);
+}
+#endif /* CONFIG_PCI */