dm355 evm support

Initial U-Boot support for the DaVinci DM355 EVM.  This is a board
from Spectrum Digital.  Board docs include schematic and firmware
for its microcontroller:

  http://c6000.spectrumdigital.com/evmdm355/revd/

Most of the DM355 chip is fully documented by TI, the most notable
exception being the MPEG/JPEG coprocessor (programmable using codecs
available at no cost from TI), which is omitted from its DM335 sibling:

  http://focus.ti.com/docs/prod/folders/print/tms320dm355.html

This version can boot from the on-board DM9000 Ethernet chip, after
being loaded (from NAND, MMC/SD, or UART).  In the near future, NAND
and USB support could be added ... NAND support is being held back
until the support for the 4-bit ECC hardware is ready.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

1 files changed, 190 insertions, 0 deletions

diff --git a/include/configs/davinci_dm355evm.h b/include/configs/davinci_dm355evm.h
new file mode 100644
index 0000000000..9a7df083fb
--- /dev/null
+++ b/include/configs/davinci_dm355evm.h
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2009 David Brownell
+ *
+ * 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
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+#include <asm/sizes.h>
+
+/* Spectrum Digital TMS320DM355 EVM board */
+#define DAVINCI_DM355EVM
+
+#define CONFIG_SKIP_LOWLEVEL_INIT	/* U-Boot is a 3rd stage loader */
+#define CONFIG_SKIP_RELOCATE_UBOOT
+#define CONFIG_SYS_NO_FLASH		/* that is, no *NOR* flash */
+#define CONFIG_SYS_CONSOLE_INFO_QUIET
+#define CONFIG_DISPLAY_CPUINFO
+
+/* SoC Configuration */
+#define CONFIG_ARM926EJS				/* arm926ejs CPU */
+#define CONFIG_SYS_TIMERBASE		0x01c21400	/* use timer 0 */
+#define CONFIG_SYS_HZ_CLOCK		24000000	/* timer0 freq */
+#define CONFIG_SYS_HZ			1000
+#define CONFIG_SOC_DM355
+
+/* Memory Info */
+#define CONFIG_NR_DRAM_BANKS		1
+#define PHYS_SDRAM_1			0x80000000
+#define PHYS_SDRAM_1_SIZE		SZ_128M
+
+/* Serial Driver info: UART0 for console  */
+#define CONFIG_SYS_NS16550
+#define CONFIG_SYS_NS16550_SERIAL
+#define CONFIG_SYS_NS16550_REG_SIZE	-4
+#define CONFIG_SYS_NS16550_COM1		0x01c20000
+#define CONFIG_SYS_NS16550_CLK		CONFIG_SYS_HZ_CLOCK
+#define CONFIG_SYS_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200 }
+#define CONFIG_CONS_INDEX		1
+#define CONFIG_BAUDRATE			115200
+
+/* Ethernet:  external DM9000 */
+#define CONFIG_DRIVER_DM9000		1
+#define CONFIG_DM9000_BASE		0x04014000
+#define DM9000_IO			CONFIG_DM9000_BASE
+#define DM9000_DATA			(CONFIG_DM9000_BASE + 2)
+
+/* I2C */
+#define CONFIG_HARD_I2C
+#define CONFIG_DRIVER_DAVINCI_I2C
+#define CONFIG_SYS_I2C_SPEED		400000
+#define CONFIG_SYS_I2C_SLAVE		0x10	/* SMBus host address */
+
+/* NAND: socketed, two chipselects, normally 2 GBytes */
+/* NYET -- #define CONFIG_NAND_DAVINCI */
+#define CONFIG_SYS_NAND_HW_ECC
+#define CONFIG_SYS_NAND_USE_FLASH_BBT
+
+#define CONFIG_SYS_NAND_LARGEPAGE
+#define CONFIG_SYS_NAND_BASE_LIST	{ 0x02000000, }
+/* socket has two chipselects, nCE0 gated by address BIT(14) */
+#define CONFIG_SYS_MAX_NAND_DEVICE	1
+#define CONFIG_SYS_NAND_MAX_CHIPS	2
+
+/* USB: OTG connector */
+/* NYET -- #define CONFIG_USB_DAVINCI */
+
+/* U-Boot command configuration */
+#include <config_cmd_default.h>
+
+#undef CONFIG_CMD_BDI
+#undef CONFIG_CMD_FLASH
+#undef CONFIG_CMD_FPGA
+#undef CONFIG_CMD_SETGETDCR
+
+#define CONFIG_CMD_ASKENV
+#define CONFIG_CMD_DHCP
+#define CONFIG_CMD_I2C
+#define CONFIG_CMD_PING
+#define CONFIG_CMD_SAVES
+
+#ifdef CONFIG_NAND_DAVINCI
+#define CONFIG_CMD_MTDPARTS
+#define CONFIG_MTD_PARTITIONS
+#define CONFIG_CMD_NAND
+#define CONFIG_CMD_UBI
+#define CONFIG_RBTREE
+#endif
+
+/* TEMPORARY -- no safe place to save env, yet */
+#define CONFIG_ENV_IS_NOWHERE
+#undef CONFIG_CMD_SAVEENV
+
+#ifdef CONFIG_USB_DAVINCI
+#define CONFIG_MUSB_HCD
+#define CONFIG_CMD_USB
+#define CONFIG_USB_STORAGE
+#else
+#undef CONFIG_MUSB_HCD
+#undef CONFIG_CMD_USB
+#undef CONFIG_USB_STORAGE
+#endif
+
+#define CONFIG_CRC32_VERIFY
+#define CONFIG_MX_CYCLIC
+
+/* U-Boot general configuration */
+#undef CONFIG_USE_IRQ				/* No IRQ/FIQ in U-Boot */
+#define CONFIG_BOOTFILE		"uImage"	/* Boot file name */
+#define CONFIG_SYS_PROMPT	"DM355 EVM # "	/* Monitor Command Prompt */
+#define CONFIG_SYS_CBSIZE	1024		/* Console I/O Buffer Size  */
+#define CONFIG_SYS_PBSIZE			/* Print buffer size */ \
+		(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
+#define CONFIG_SYS_MAXARGS	16		/* max number of command args */
+#define CONFIG_SYS_HUSH_PARSER
+#define CONFIG_SYS_PROMPT_HUSH_PS2	"> "
+#define CONFIG_SYS_LONGHELP
+
+#define CONFIG_ENV_SIZE		SZ_16K
+
+/* NYET -- #define CONFIG_BOOTDELAY	5 */
+#define CONFIG_BOOTCOMMAND \
+		"dhcp;bootm"
+#define CONFIG_BOOTARGS \
+		"console=ttyS0,115200n8 " \
+		"root=/dev/mmcblk0p1 rootwait rootfstype=ext3 ro"
+
+#define CONFIG_CMDLINE_EDITING
+#define CONFIG_VERSION_VARIABLE
+#define CONFIG_TIMESTAMP
+
+#define CONFIG_NET_RETRY_COUNT 10
+
+/* U-Boot memory configuration */
+#define CONFIG_STACKSIZE		SZ_256K		/* regular stack */
+#define CONFIG_SYS_MALLOC_LEN		SZ_512K		/* malloc() arena */
+#define CONFIG_SYS_GBL_DATA_SIZE	128		/* for initial data */
+#define CONFIG_SYS_MEMTEST_START	0x87000000	/* physical address */
+#define CONFIG_SYS_MEMTEST_END		0x88000000	/* test 16MB RAM */
+
+/* Linux interfacing */
+#define CONFIG_CMDLINE_TAG
+#define CONFIG_SETUP_MEMORY_TAGS
+#define CONFIG_SYS_BARGSIZE	1024			/* bootarg Size */
+#define CONFIG_SYS_LOAD_ADDR	0x80700000		/* kernel address */
+
+
+/* NAND configuration ... socketed with two chipselects.  It normally comes
+ * with a 2GByte SLC part with 2KB pages (and 128KB erase blocks); other
+ * 2GByte parts may have 4KB pages, 256KB erase blocks, and use MLC.  (MLC
+ * pretty much demands the 4-bit ECC support.)  You can of course swap in
+ * other parts, including small page ones.
+ *
+ * This presents a single read-only partition for all bootloader stuff.
+ * UBL (1+ block), U-Boot (256KB+), U-Boot environment (one block), and
+ * some extra space to help cope with bad blocks in that data.  Linux
+ * shouldn't care about its detailed layout, and will probably want to use
+ * UBI/UBFS for the rest (except maybe on smallpage chips).  It's easy to
+ * override this default partitioning using MTDPARTS and cmdlinepart.
+ */
+#define MTDIDS_DEFAULT		"nand0=davinci_nand.0"
+
+#ifdef CONFIG_SYS_NAND_LARGEPAGE
+/*  Use same layout for 128K/256K blocks; allow some bad blocks */
+#define PART_BOOT		"2m(bootloader)ro,"
+#else
+/* Assume 16K erase blocks; allow a few bad ones. */
+#define PART_BOOT		"512k(bootloader)ro,"
+#endif
+
+#define PART_KERNEL		"4m(kernel),"	/* kernel + initramfs */
+#define PART_REST		"-(filesystem)"
+
+#define MTDPARTS_DEFAULT	\
+	"mtdparts=davinci_nand.0:" PART_BOOT PART_KERNEL PART_REST
+
+#endif /* __CONFIG_H */