[U-Boot] [PATCH v2 3/4] add TI DA8xx support: Add new directory for da830evm board

[Nick Thompson <nick.thompson@gefanuc.com>]

Add new directory for da830evm board

Provides initial support for TI OMAP-L137/DA830 SoC devices on a Spectrum
Digital EVM board. See http://www.spectrumdigital.com/

Provides:
Initial boot and configuration.
Support for i2c.
UART support (console).

Signed-off-by: Nick Thompson <nick.thompson@gefanuc.com>
---
Applies to u-boot-ti

 board/davinci/da830evm/Makefile     |   52 ++++++++++++
 board/davinci/da830evm/board_init.S |   29 +++++++
 board/davinci/da830evm/config.mk    |   45 ++++++++++
 board/davinci/da830evm/dv_board.c   |  156 +++++++++++++++++++++++++++++++++++
 4 files changed, 282 insertions(+), 0 deletions(-)

diff --git a/board/davinci/da830evm/Makefile b/board/davinci/da830evm/Makefile
new file mode 100644
index 0000000..fa00138
--- /dev/null
+++ b/board/davinci/da830evm/Makefile
@@ -0,0 +1,52 @@
+#
+# (C) Copyright 2000, 2001, 2002
+# Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+#
+# Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+#
+# 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	:= dv_board.o
+SOBJS	:= board_init.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak *~ .depend
+
+#########################################################################
+# This is for $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/davinci/da830evm/board_init.S b/board/davinci/da830evm/board_init.S
new file mode 100644
index 0000000..22d8adc
--- /dev/null
+++ b/board/davinci/da830evm/board_init.S
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * Board-specific low level initialization code. Called at the very end
+ * of cpu/arm926ejs/davinci/lowlevel_init.S. Just returns if there is no
+ * initialization required.
+ *
+ * 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 <config.h>
+
+.globl	dv_board_init
+dv_board_init:
+
+	mov	pc, lr
diff --git a/board/davinci/da830evm/config.mk b/board/davinci/da830evm/config.mk
new file mode 100644
index 0000000..f05e36a
--- /dev/null
+++ b/board/davinci/da830evm/config.mk
@@ -0,0 +1,45 @@
+#
+# (C) Copyright 2008 Sekhar Nori, Texas Instruments, Inc. <nsekhar@ti.com>
+#
+# Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+#
+# (C) Copyright 2003 Swaminathan, Texas Instruments, <swami.iyer@ti.com>
+#
+# (C) Copyright 2002
+# Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
+# David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
+#
+# 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
+#
+
+# Texas Instruments DA8xx EVM board (ARM925EJS) cpu
+# see http://www.ti.com/ for more information on Texas Instruments
+#
+# DA8xx EVM has 1 bank of 64 MB SDRAM (2 16Meg x16 chips).
+# Physical Address:
+# C000'0000 to C400'0000
+#
+# Linux-Kernel is expected to be at C000'8000, entry C000'8000
+# (mem base + reserved)
+#
+# we load ourself to C108 '0000
+
+
+#Provide at least 16MB spacing between us and the Linux Kernel image
+TEXT_BASE = 0xC1080000
diff --git a/board/davinci/da830evm/dv_board.c b/board/davinci/da830evm/dv_board.c
new file mode 100644
index 0000000..a5e507c
--- /dev/null
+++ b/board/davinci/da830evm/dv_board.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
+ *
+ * Use the board_eth_init hook to initialise the ethernet in the
+ * correct order. (Has to wait until after call to miiphy_init().)
+ *
+ * Copyright (C) 2008 Sekhar Nori, Texas Instruments, Inc.  <nsekhar@ti.com>
+ *
+ * Modified for DA8xx EVM.
+ *
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * Parts are shamelessly stolen from various TI sources, original copyright
+ * follows:
+ * -----------------------------------------------------------------
+ *
+ * Copyright (C) 2004 Texas Instruments.
+ *
+ * ----------------------------------------------------------------------------
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * ----------------------------------------------------------------------------
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <net.h>
+#include <netdev.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/emac_defs.h>
+#include <asm/io.h>
+#include "../common/misc.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Works on Always On power domain only (no PD argument) */
+void lpsc_on(unsigned int id)
+{
+	unsigned int	mdstat, mdctl, ptstat, ptcmd;
+
+	if (id >= 64)
+		return;
+
+	if (id < 32) {
+		mdstat = PSC0_MDSTAT + (id * 4);
+		mdctl = PSC0_MDCTL + (id * 4);
+		ptstat = PSC0_PTSTAT;
+		ptcmd = PSC0_PTCMD;
+	} else {
+		id -= 32;
+		mdstat = PSC1_MDSTAT + (id * 4);
+		mdctl = PSC1_MDCTL + (id * 4);
+		ptstat = PSC1_PTSTAT;
+		ptcmd = PSC1_PTCMD;
+	}
+
+	while (readl(ptstat) & 0x01)
+		; /* wait */
+
+	if ((readl(mdstat) & 0x1f) == 0x03)
+		return; /* Already on and enabled */
+
+	writel(readl(mdctl) | 0x03, mdctl);
+
+	writel(0x01, ptcmd);
+
+	while (readl(ptstat) & 0x01)
+		; /* wait */
+	while ((readl(mdstat) & 0x1f) != 0x03)
+		; /* wait */
+}
+
+/* Read, Modify, Write macro for pin multiplxer modifications */
+#define PINMUX(n, val, mask) writel((val & mask) | (readl(n) & (~mask)), n)
+
+int board_init(void)
+{
+
+#ifndef CONFIG_USE_IRQ
+	/*
+	 * Mask all IRQs by clearing the global enable and setting
+	 * the enable clear for all the 90 interrupts. This code is
+	 * also included in low level init. Including it here in case
+	 * low level init is skipped. Not removing it from low level
+	 * init in case some of the low level init code generates
+	 * interrupts... Not expected... but you never know...
+	 */
+
+	writel(0, INTC_GLB_EN);
+
+	writel(0, INTC_HINT_EN + 0x0);
+	writel(0, INTC_HINT_EN + 0x4);
+	writel(0, INTC_HINT_EN + 0x8);
+
+	writel(0xffffffff, INTC_EN_CLR0 + 0x0);
+	writel(0xffffffff, INTC_EN_CLR0 + 0x4);
+	writel(0xffffffff, INTC_EN_CLR0 + 0x8);
+#endif
+
+	/* arch number of the board */
+	gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA830_EVM;
+
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
+
+	/*
+	 * Power on required peripherals
+	 * ARM does not have access by default to PSC0 and PSC1
+	 * assuming here that the DSP bootloader has set the IOPU
+	 * such that PSC access is available to ARM
+	 */
+	lpsc_on(DAVINCI_LPSC_AEMIF);    /* NAND, NOR */
+	lpsc_on(DAVINCI_LPSC_SPI0);     /* Serial Flash */
+	lpsc_on(DAVINCI_LPSC_EMAC);     /* image download */
+	lpsc_on(DAVINCI_LPSC_UART2);    /* console */
+	lpsc_on(DAVINCI_LPSC_GPIO);
+
+	/* Pin Muxing support */
+
+	/* setup the SUSPSRC for ARM to control emulation suspend */
+	writel(readl(SUSPSRC) & ~(SUSPSRC_EMAC | SUSPSRC_I2C | SUSPSRC_SPI0 |
+			SUSPSRC_TIMER0 | SUSPSRC_UART2), SUSPSRC);
+
+#ifdef CONFIG_USE_PINMUX
+
+#ifdef CONFIG_SPI_FLASH
+	/* SPI0 pin enable*/
+	PINMUX(PINMUX7, 0x11111000, 0xFFFFF000)
+#endif
+
+	/* UART pin enable */
+	PINMUX(PINMUX8, 0x20000000, 0xF0000000);
+	PINMUX(PINMUX9, 0x00000002, 0x0000000F);
+
+	/* I2C pin enable */
+	PINMUX(PINMUX9, 0x00022000, 0x000FF000);
+
+#endif /* CONFIG_USE_PIN_MUX */
+
+	/* enable the console UART */
+	writel(PWREMU_MGMT_FREE | PWREMU_MGMT_URRST | PWREMU_MGMT_UTRST,
+			DAVINCI_UART2_BASE + PWREMU_MGMT_BASE);
+
+	return(0);
+}