mpc83xx: New board support for SIMPC8313

This patch will create a new board, SIMPC8313, from Sheldon Instruments.  This
board boots from NAND devices and is configureable for either large or small
page devices.  The board supports non-soldered DDR2, one ethernet port, a
Marvell 88E1118 PHY, and PCI host support.  The board also has a FPGA connected
to the eLBC providing glue logic to a TMS320C67xx DSP.

Signed-off-by: Ron Madrid <ron_madrid@sbcglobal.net>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

4 files changed, 390 insertions, 0 deletions

diff --git a/board/sheldon/simpc8313/Makefile b/board/sheldon/simpc8313/Makefile
new file mode 100644
index 0000000..7c34c5e
--- /dev/null
+++ b/board/sheldon/simpc8313/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) $(ARFLAGS) $@ $(OBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/sheldon/simpc8313/config.mk b/board/sheldon/simpc8313/config.mk
new file mode 100644
index 0000000..ce1c0d8
--- /dev/null
+++ b/board/sheldon/simpc8313/config.mk
@@ -0,0 +1,13 @@
+ifndef NAND_SPL
+sinclude $(OBJTREE)/board/$(BOARDDIR)/config.tmp
+endif
+
+ifndef TEXT_BASE
+TEXT_BASE = 0x00100000
+endif
+
+ifdef CONFIG_NAND_LP
+PAD_TO = 0xFFF20000
+else
+PAD_TO = 0xFFF04000
+endif
diff --git a/board/sheldon/simpc8313/sdram.c b/board/sheldon/simpc8313/sdram.c
new file mode 100644
index 0000000..ebb70a2
--- /dev/null
+++ b/board/sheldon/simpc8313/sdram.c
@@ -0,0 +1,193 @@
+/*
+ * Copyright (C) Freescale Semiconductor, Inc. 2006-2007
+ * Copyright (C) Sheldon Instruments, Inc. 2008
+ *
+ * Author: Ron Madrid <info@sheldoninst.com>
+ *
+ * (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 <common.h>
+#include <mpc83xx.h>
+#include <spd_sdram.h>
+#include <asm/bitops.h>
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <asm/mmu.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static long fixed_sdram(void);
+
+#if defined(CONFIG_NAND_SPL)
+void si_wait_i2c(void)
+{
+	volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
+
+	while (!(__raw_readb(&im->i2c[0].sr) & 0x02))
+		;
+
+	__raw_writeb(0x00, &im->i2c[0].sr);
+
+	sync();
+
+	return;
+}
+
+void si_read_i2c(u32 lbyte, int count, u8 *buffer)
+{
+	volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
+	u32 i;
+	u8 chip = 0x50 << 1; /* boot sequencer I2C */
+	u32 ubyte = (lbyte & 0xff00) >> 8;
+
+	lbyte &= 0xff;
+
+	/*
+	 * Set up controller
+	 */
+	__raw_writeb(0x3f, &im->i2c[0].fdr);
+	__raw_writeb(0x00, &im->i2c[0].adr);
+	__raw_writeb(0x00, &im->i2c[0].sr);
+	__raw_writeb(0x00, &im->i2c[0].dr);
+
+	while (__raw_readb(&im->i2c[0].sr) & 0x20)
+		;
+
+	/*
+	 * Writing address to device
+	 */
+	__raw_writeb(0xb0, &im->i2c[0].cr);
+	sync();
+	__raw_writeb(chip, &im->i2c[0].dr);
+	si_wait_i2c();
+
+	__raw_writeb(0xb0, &im->i2c[0].cr);
+	sync();
+	__raw_writeb(ubyte, &im->i2c[0].dr);
+	si_wait_i2c();
+
+	__raw_writeb(lbyte, &im->i2c[0].dr);
+	si_wait_i2c();
+
+	__raw_writeb(0xb4, &im->i2c[0].cr);
+	sync();
+	__raw_writeb(chip + 1, &im->i2c[0].dr);
+	si_wait_i2c();
+
+	__raw_writeb(0xa0, &im->i2c[0].cr);
+	sync();
+
+	/*
+	 * Dummy read
+	 */
+	__raw_readb(&im->i2c[0].dr);
+
+	si_wait_i2c();
+
+	/*
+	 * Read actual data
+	 */
+	for (i = 0; i < count; i++)
+	{
+		if (i == (count - 2))	/* Reached next to last byte, No ACK */
+			__raw_writeb(0xa8, &im->i2c[0].cr);
+		if (i == (count - 1))	/* Reached last byte, STOP */
+			__raw_writeb(0x88, &im->i2c[0].cr);
+
+		/* Read byte of data */
+		buffer[i] = __raw_readb(&im->i2c[0].dr);
+
+		if (i == (count - 1))
+			break;
+		si_wait_i2c();
+	}
+
+	return;
+}
+#endif /* CONFIG_NAND_SPL */
+
+phys_size_t initdram(int board_type)
+{
+	volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
+	volatile fsl_lbus_t *lbc= &im->lbus;
+	u32 msize;
+
+	if ((__raw_readl(&im->sysconf.immrbar) & IMMRBAR_BASE_ADDR) != (u32) im)
+		return -1;
+
+	/* DDR SDRAM - Main SODIMM */
+	__raw_writel(CONFIG_SYS_DDR_BASE & LAWBAR_BAR, &im->sysconf.ddrlaw[0].bar);
+
+	msize = fixed_sdram();
+
+	/* Local Bus setup lbcr and mrtpr */
+	__raw_writel(CONFIG_SYS_LBC_LBCR, &lbc->lbcr);
+	__raw_writel(CONFIG_SYS_LBC_MRTPR, &lbc->mrtpr);
+	sync();
+
+	/* return total bus SDRAM size(bytes)  -- DDR */
+	return (msize * 1024 * 1024);
+}
+
+/*************************************************************************
+ *  fixed sdram init -- reads values from boot sequencer I2C
+ ************************************************************************/
+static long fixed_sdram(void)
+{
+	volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
+	u32 msizelog2, msize = 1;
+#if defined(CONFIG_NAND_SPL)
+	u32 i;
+	const u8 bytecount = 135;
+	u8 buffer[bytecount];
+	u32 addr, data;
+
+	si_read_i2c(0, bytecount, buffer);
+
+	for (i = 18; i < bytecount; i += 7){
+		addr = (u32)buffer[i];
+		addr <<= 8;
+		addr |= (u32)buffer[i + 1];
+		addr <<= 2;
+		data = (u32)buffer[i + 2];
+		data <<= 8;
+		data |= (u32)buffer[i + 3];
+		data <<= 8;
+		data |= (u32)buffer[i + 4];
+		data <<= 8;
+		data |= (u32)buffer[i + 5];
+
+		__raw_writel(data, (u32 *)(CONFIG_SYS_IMMR + addr));
+	}
+
+	sync();
+
+	/* enable DDR controller */
+	__raw_writel((__raw_readl(&im->ddr.sdram_cfg) | SDRAM_CFG_MEM_EN), &im->ddr.sdram_cfg);
+#endif /* (CONFIG_NAND_SPL) */
+
+	msizelog2 = ((__raw_readl(&im->sysconf.ddrlaw[0].ar) & LAWAR_SIZE) + 1);
+	msize <<= (msizelog2 - 20);
+
+	return msize;
+}
diff --git a/board/sheldon/simpc8313/simpc8313.c b/board/sheldon/simpc8313/simpc8313.c
new file mode 100644
index 0000000..25e5c24
--- /dev/null
+++ b/board/sheldon/simpc8313/simpc8313.c
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) Freescale Semiconductor, Inc. 2006-2007
+ * Copyright (C) Sheldon Instruments, Inc. 2008
+ *
+ * Author: Ron Madrid <info@sheldoninst.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 <libfdt.h>
+#include <pci.h>
+#include <mpc83xx.h>
+#include <ns16550.h>
+#include <nand.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkboard(void)
+{
+	puts("Board: Sheldon Instruments SIMPC8313\n");
+	return 0;
+}
+
+#ifndef CONFIG_NAND_SPL
+static struct pci_region pci_regions[] = {
+	{
+		bus_start: CONFIG_SYS_PCI1_MEM_BASE,
+		phys_start: CONFIG_SYS_PCI1_MEM_PHYS,
+		size: CONFIG_SYS_PCI1_MEM_SIZE,
+		flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
+	},
+	{
+		bus_start: CONFIG_SYS_PCI1_MMIO_BASE,
+		phys_start: CONFIG_SYS_PCI1_MMIO_PHYS,
+		size: CONFIG_SYS_PCI1_MMIO_SIZE,
+		flags: PCI_REGION_MEM
+	},
+	{
+		bus_start: CONFIG_SYS_PCI1_IO_BASE,
+		phys_start: CONFIG_SYS_PCI1_IO_PHYS,
+		size: CONFIG_SYS_PCI1_IO_SIZE,
+		flags: PCI_REGION_IO
+	}
+};
+
+void pci_init_board(void)
+{
+	volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_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 = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR;
+	pci_law[0].ar = LBLAWAR_EN | LBLAWAR_512MB;
+
+	pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR;
+	pci_law[1].ar = LBLAWAR_EN | LBLAWAR_1MB;
+
+	warmboot = gd->bd->bi_bootflags & BOOTFLAG_WARM;
+
+	mpc83xx_pci_init(1, reg, warmboot);
+}
+
+/*
+ * Miscellaneous late-boot configurations
+ */
+int misc_init_r(void)
+{
+	int rc = 0;
+
+	return rc;
+}
+
+#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
+#else /* CONFIG_NAND_SPL */
+void board_init_f(ulong bootflag)
+{
+	NS16550_init((NS16550_t)(CONFIG_SYS_IMMR + 0x4500),
+				CONFIG_SYS_NS16550_CLK / 16 / CONFIG_BAUDRATE);
+	puts("NAND boot... ");
+	init_timebase();
+	initdram(0);
+	relocate_code(CONFIG_SYS_NAND_U_BOOT_RELOC + 0x10000, (gd_t *)gd,
+				  CONFIG_SYS_NAND_U_BOOT_RELOC);
+}
+
+void board_init_r(gd_t *gd, ulong dest_addr)
+{
+	nand_boot();
+}
+
+void putc(char c)
+{
+	if (gd->flags & GD_FLG_SILENT)
+		return;
+
+	if (c == '\n')
+		NS16550_putc((NS16550_t)(CONFIG_SYS_IMMR + 0x4500), '\r');
+
+	NS16550_putc((NS16550_t)(CONFIG_SYS_IMMR + 0x4500), c);
+}
+#endif