[U-Boot] [PATCH v2 2/3] TI: DaVinci: Add board specific code for da850 EVM

[Sudhakar Rajashekhara]

Provides initial support for TI OMAP-L138/DA850 SoC devices on
a Logic PD EVM board.

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

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj at ti.com>
---
This patch applies to u-boot-ti branch.

Since the previous version following are the changes:
        Macro used for conditional compilation has changed.

 board/davinci/da8xxevm/Makefile         |    1 +
 board/davinci/da8xxevm/da850evm.c       |  124 +++++++++++++++++++++++++++++++
 include/asm-arm/arch-davinci/hardware.h |    1 +
 3 files changed, 126 insertions(+), 0 deletions(-)
 create mode 100644 board/davinci/da8xxevm/da850evm.c

diff --git a/board/davinci/da8xxevm/Makefile b/board/davinci/da8xxevm/Makefile
index 20f4915..bcf315c 100644
--- a/board/davinci/da8xxevm/Makefile
+++ b/board/davinci/da8xxevm/Makefile
@@ -28,6 +28,7 @@ include $(TOPDIR)/config.mk
 LIB	= $(obj)lib$(BOARD).a
 
 COBJS-$(CONFIG_MACH_DAVINCI_DA830_EVM)	+= da830evm.o
+COBJS-$(CONFIG_MACH_DAVINCI_DA850_EVM)	+= da850evm.o
 
 COBJS   := $(sort $(COBJS-y))
 
diff --git a/board/davinci/da8xxevm/da850evm.c b/board/davinci/da8xxevm/da850evm.c
new file mode 100644
index 0000000..92548e2
--- /dev/null
+++ b/board/davinci/da8xxevm/da850evm.c
@@ -0,0 +1,124 @@
+/*
+ * (C) Copyright 2009, Texas Instruments, Inc. http://www.ti.com/
+ *
+ * Based on da830evm.c
+ *
+ * Copyright (C) 2007 Sergey Kubushyn <ksi at 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 <asm/arch/hardware.h>
+#include <asm/io.h>
+#include "../common/misc.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define pinmux	&davinci_syscfg_regs->pinmux
+
+#ifdef CONFIG_SPI_FLASH
+/* SPI0 pin muxer settings */
+const struct pinmux_config spi1_pins[] = {
+	{ pinmux[5], 1, 1 },
+	{ pinmux[5], 1, 2 },
+	{ pinmux[5], 1, 4 },
+	{ pinmux[5], 1, 5 }
+};
+#endif
+
+/* UART pin muxer settings */
+const struct pinmux_config uart_pins[] = {
+	{ pinmux[0], 4, 6 },
+	{ pinmux[0], 4, 7 },
+	{ pinmux[4], 2, 4 },
+	{ pinmux[4], 2, 5 }
+};
+
+/* I2C pin muxer settings */
+const struct pinmux_config i2c_pins[] = {
+	{ pinmux[4], 2, 2 },
+	{ pinmux[4], 2, 3 }
+};
+
+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.
+	 */
+
+	writel(0, &davinci_aintc_regs->ger);
+
+	writel(0, &davinci_aintc_regs->hier);
+
+	writel(0xffffffff, &davinci_aintc_regs->ecr1);
+	writel(0xffffffff, &davinci_aintc_regs->ecr2);
+	writel(0xffffffff, &davinci_aintc_regs->ecr3);
+#endif
+
+	/* arch number of the board */
+	gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_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_SPI1);     /* Serial Flash */
+	lpsc_on(DAVINCI_LPSC_EMAC);     /* image download */
+	lpsc_on(DAVINCI_LPSC_UART2);    /* console */
+	lpsc_on(DAVINCI_LPSC_GPIO);
+
+	/* setup the SUSPSRC for ARM to control emulation suspend */
+	writel(readl(&davinci_syscfg_regs->suspsrc) &
+	       ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
+		 DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
+		 DAVINCI_SYSCFG_SUSPSRC_UART2),
+	       &davinci_syscfg_regs->suspsrc);
+
+#ifdef CONFIG_SPI_FLASH
+	if (davinci_configure_pin_mux(spi1_pins, ARRAY_SIZE(spi1_pins)) != 0)
+		return 1;
+#endif
+
+	if (davinci_configure_pin_mux(uart_pins, ARRAY_SIZE(uart_pins)) != 0)
+		return 1;
+
+	if (davinci_configure_pin_mux(i2c_pins, ARRAY_SIZE(i2c_pins)) != 0)
+		return 1;
+
+	/* enable the console UART */
+	writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
+		DAVINCI_UART_PWREMU_MGMT_UTRST),
+	       &davinci_uart2_ctrl_regs->pwremu_mgmt);
+
+	return(0);
+}
diff --git a/include/asm-arm/arch-davinci/hardware.h b/include/asm-arm/arch-davinci/hardware.h
index 81cc8ab..3520cf8 100644
--- a/include/asm-arm/arch-davinci/hardware.h
+++ b/include/asm-arm/arch-davinci/hardware.h
@@ -398,6 +398,7 @@ struct davinci_syscfg_regs {
 #define DAVINCI_SYSCFG_SUSPSRC_EMAC		(1 << 5)
 #define DAVINCI_SYSCFG_SUSPSRC_I2C		(1 << 16)
 #define DAVINCI_SYSCFG_SUSPSRC_SPI0		(1 << 21)
+#define DAVINCI_SYSCFG_SUSPSRC_SPI1		(1 << 22)
 #define DAVINCI_SYSCFG_SUSPSRC_UART2		(1 << 20)
 #define DAVINCI_SYSCFG_SUSPSRC_TIMER0		(1 << 27)
 
-- 
1.5.6