mpc83xx: Add the support for MPC8315ERDB board

The features list:
- Boot from NOR Flash
- DDR2 266MHz hardcoded configuration
- Local bus NOR Flash R/W operation
- I2C, UART, MII and RTC
- eTSEC0/1 support
- PCI host

Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

4 files changed, 303 insertions, 0 deletions

diff --git a/board/freescale/mpc8315erdb/Makefile b/board/freescale/mpc8315erdb/Makefile
new file mode 100644
index 0000000..a987e510
--- /dev/null
+++ b/board/freescale/mpc8315erdb/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 sdram.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS)
+	$(AR) crv $@ $(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/mpc8315erdb/config.mk b/board/freescale/mpc8315erdb/config.mk
new file mode 100644
index 0000000..f768264
--- /dev/null
+++ b/board/freescale/mpc8315erdb/config.mk
@@ -0,0 +1 @@
+TEXT_BASE = 0xFE000000
diff --git a/board/freescale/mpc8315erdb/mpc8315erdb.c b/board/freescale/mpc8315erdb/mpc8315erdb.c
new file mode 100644
index 0000000..7af36dd
--- /dev/null
+++ b/board/freescale/mpc8315erdb/mpc8315erdb.c
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2007 Freescale Semiconductor, Inc.
+ *
+ * Author: Scott Wood <scottwood@freescale.com>
+ *         Dave Liu <daveliu@freescale.com>
+ *
+ * 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 <common.h>
+#include <i2c.h>
+#if defined(CONFIG_OF_LIBFDT)
+#include <libfdt.h>
+#endif
+#include <pci.h>
+#include <mpc83xx.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_early_init_f(void)
+{
+	volatile immap_t *im = (immap_t *)CFG_IMMR;
+
+	if (im->pmc.pmccr1 & PMCCR1_POWER_OFF)
+		gd->flags |= GD_FLG_SILENT;
+
+	return 0;
+}
+
+static u8 read_board_info(void)
+{
+	u8 val8;
+	i2c_set_bus_num(0);
+
+	if (i2c_read(CFG_I2C_PCF8574A_ADDR, 0, 0, &val8, 1) == 0)
+		return val8;
+	else
+		return 0;
+}
+
+int checkboard(void)
+{
+	static const char * const rev_str[] = {
+		"0.0",
+		"0.1",
+		"1.0",
+		"1.1",
+		"<unknown>",
+	};
+	u8 info;
+	int i;
+
+	info = read_board_info();
+	i = (!info) ? 4: info & 0x03;
+
+	printf("Board: Freescale MPC8315ERDB Rev %s\n", rev_str[i]);
+
+	return 0;
+}
+
+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 };
+	int warmboot;
+
+	/* Enable all 3 PCI_CLK_OUTPUTs. */
+	clk->occr |= 0xe0000000;
+
+	/*
+	 * 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;
+
+	warmboot = gd->bd->bi_bootflags & BOOTFLAG_WARM;
+	warmboot |= immr->pmc.pmccr1 & PMCCR1_POWER_OFF;
+
+	mpc83xx_pci_init(1, reg, warmboot);
+}
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+void ft_board_setup(void *blob, bd_t *bd)
+{
+	ft_cpu_setup(blob, bd);
+#ifdef CONFIG_PCI
+	ft_pci_setup(blob, bd);
+#endif
+}
+#endif
diff --git a/board/freescale/mpc8315erdb/sdram.c b/board/freescale/mpc8315erdb/sdram.c
new file mode 100644
index 0000000..f97e3c7
--- /dev/null
+++ b/board/freescale/mpc8315erdb/sdram.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2007 Freescale Semiconductor, Inc.
+ *
+ * Authors: Nick.Spence@freescale.com
+ *          Wilson.Lo@freescale.com
+ *          scottwood@freescale.com
+ *
+ * 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 <common.h>
+#include <mpc83xx.h>
+#include <spd_sdram.h>
+
+#include <asm/bitops.h>
+#include <asm/io.h>
+
+#include <asm/processor.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static void resume_from_sleep(void)
+{
+	u32 magic = *(u32 *)0;
+
+	typedef void (*func_t)(void);
+	func_t resume = *(func_t *)4;
+
+	if (magic == 0xf5153ae5)
+		resume();
+
+	gd->flags &= ~GD_FLG_SILENT;
+	puts("\nResume from sleep failed: bad magic word\n");
+}
+
+/* Fixed sdram init -- doesn't use serial presence detect.
+ *
+ * This is useful for faster booting in configs where the RAM is unlikely
+ * to be changed, or for things like NAND booting where space is tight.
+ */
+static long fixed_sdram(void)
+{
+	volatile immap_t *im = (volatile 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);
+	im->sysconf.ddrcdr = CFG_DDRCDR_VALUE;
+
+	/*
+	 * Erratum DDR3 requires a 50ms delay after clearing DDRCDR[DDR_cfg],
+	 * or the DDR2 controller may fail to initialize correctly.
+	 */
+	udelay(50000);
+
+	im->ddr.csbnds[0].csbnds = (msize - 1) >> 24;
+	im->ddr.cs_config[0] = CFG_DDR_CS0_CONFIG;
+
+	/* Currently we use only one CS, so disable the other bank. */
+	im->ddr.cs_config[1] = 0;
+
+	im->ddr.sdram_clk_cntl = CFG_DDR_SDRAM_CLK_CNTL;
+	im->ddr.timing_cfg_3 = CFG_DDR_TIMING_3;
+	im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1;
+	im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2;
+	im->ddr.timing_cfg_0 = CFG_DDR_TIMING_0;
+
+	if (im->pmc.pmccr1 & PMCCR1_POWER_OFF)
+		im->ddr.sdram_cfg = CFG_DDR_SDRAM_CFG | SDRAM_CFG_BI;
+	else
+		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;
+	sync();
+
+	/* enable DDR controller */
+	im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
+	sync();
+
+	return msize;
+}
+
+long int initdram(int board_type)
+{
+	volatile immap_t *im = (volatile immap_t *)CFG_IMMR;
+	u32 msize;
+
+	if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
+		return -1;
+
+	/* DDR SDRAM */
+	msize = fixed_sdram();
+
+	if (im->pmc.pmccr1 & PMCCR1_POWER_OFF)
+		resume_from_sleep();
+
+	/* return total bus SDRAM size(bytes)  -- DDR */
+	return msize;
+}