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

Sudhakar Rajashekhara
2009-12-16T10:24:24Z

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@ti.com>
---
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 45da94b..93dbcbb 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-$(CONFIG_DA830_EVM) += da830evm.o
+COBJS-$(CONFIG_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@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