From: David Brownell dbrownell@users.sourceforge.net

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/

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) 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.

The current NAND driver works fine with the socketed 2GByte SLC NAND device included with the board, or swapping it out with a small page NAND chip ... as long as the 1-bit hardware ECC hardware is used. The intention is however to always use the 4-bit ECC hardware, and that driver support is not yet ready.

Signed-off-by: David Brownell dbrownell@users.sourceforge.net --- Depends on patches queued in arm/next, to support non-dm6446 DaVinci chips and add the core dm355 chip support. DM9000 support depends on the EEPROM-reading bugfix, now merged to the main u-boot tree.

MAKEALL | 1 Makefile | 3 board/davinci/dm355evm/Makefile | 52 ++++++++ board/davinci/dm355evm/config.mk | 11 + board/davinci/dm355evm/dm355evm.c | 84 ++++++++++++++ board/davinci/dm355evm/u-boot.lds | 52 ++++++++ include/configs/davinci_dm355evm.h | 209 +++++++++++++++++++++++++++++++++++ 7 files changed, 412 insertions(+)

--- a/MAKEALL +++ b/MAKEALL @@ -527,6 +527,7 @@ LIST_ARM9=" \ davinci_schmoogie \ davinci_sffsdr \ davinci_sonata \ + davinci_dm355evm \ "

######################################################################### --- a/Makefile +++ b/Makefile @@ -2790,6 +2790,9 @@ davinci_sffsdr_config : unconfig davinci_sonata_config : unconfig @$(MKCONFIG) $(@:_config=) arm arm926ejs sonata davinci davinci

+davinci_dm355evm_config : unconfig + @$(MKCONFIG) $(@:_config=) arm arm926ejs dm355evm davinci davinci + lpd7a400_config \ lpd7a404_config: unconfig @$(MKCONFIG) $(@:_config=) arm lh7a40x lpd7a40x --- /dev/null +++ b/board/davinci/dm355evm/Makefile @@ -0,0 +1,52 @@ +# +# (C) Copyright 2000, 2001, 2002 +# Wolfgang Denk, DENX Software Engineering, wd@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 := $(BOARD).o +SOBJS := + +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 $(obj).depend + +######################################################################### +# This is for $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### --- /dev/null +++ b/board/davinci/dm355evm/config.mk @@ -0,0 +1,11 @@ +# +# Spectrum Digital DM355 EVM board +# dm355evm board has 1 bank of 128 MB DDR RAM +# Physical Address: 8000'0000 to 8800'0000 +# +# Linux Kernel is expected to be at 8000'8000, entry 8000'8000 +# (mem base + reserved) +# + +#Provide at least 16MB spacing between us and the Linux Kernel image +TEXT_BASE = 0x81080000 --- /dev/null +++ b/board/davinci/dm355evm/dm355evm.c @@ -0,0 +1,84 @@ +/* + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <common.h> +#include <net.h> +#include <asm/io.h> +#include <asm/arch/hardware.h> +#include <asm/arch/emif_defs.h> +#include "../common/misc.h" + + +DECLARE_GLOBAL_DATA_PTR; + +/* + * With the DM355 EVM, u-boot is *always* a third stage loader: + * + * - 1st stage is ROM Boot Loader (RBL), which searches for a + * second stage loader in one of three places based on SW7: + * NAND (with MMC/SD fallback), MMC/SD, or UART. + * + * - 2nd stage is User Boot Loader (UBL), using at most 30KB + * of on-chip SRAM, responsible for lowlevel init, and for + * loading the third stage loader into DRAM. + * + * - 3rd stage, that's us! + */ + +int board_init(void) +{ + gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DM355_EVM; + gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; + + /* We expect the UBL to have handled "lowlevel init", which + * involves setting up at least: + * - clocks + * + PLL1 (for ARM and peripherals) and PLL2 (for DDR) + * + clock divisors for those PLLs + * + LPSC_DDR module enabled + * + LPSC_TIMER0 module (still) enabled + * - EMIF + * + DDR init and timings + * + AEMIF timings (for NAND and DM9000) + * - pinmux + * + * Some of that is repeated here, mostly as a precaution. + */ + + /* AEMIF: Some address lines are available as GPIOs; A3..A13 + * could be too, if we used A12 as a GPIO during NAND chipselect. + */ + REG(PINMUX2) = 0x0c08; + + /* UART0 may still be in SyncReset if we didn't boot from UART */ + davinci_enable_uart0(); + + /* EDMA may be in SyncReset too; turn it on, Linux won't (yet) */ + lpsc_on(DAVINCI_LPSC_TPCC); + lpsc_on(DAVINCI_LPSC_TPTC0); + lpsc_on(DAVINCI_LPSC_TPTC1); + + return 0; +} + +/* Platform dependent initialisation. */ +int misc_init_r(void) +{ + dv_display_clk_infos(); + return 0; +} --- /dev/null +++ b/board/davinci/dm355evm/u-boot.lds @@ -0,0 +1,52 @@ +/* + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, gj@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 + */ + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) +SECTIONS +{ + . = 0x00000000; + . = ALIGN(4); + .text : + { + cpu/arm926ejs/start.o (.text) + *(.text) + } + . = ALIGN(4); + .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) } + . = ALIGN(4); + .data : { *(.data) } + . = ALIGN(4); + .got : { *(.got) } + + . = .; + __u_boot_cmd_start = .; + .u_boot_cmd : { *(.u_boot_cmd) } + __u_boot_cmd_end = .; + + . = ALIGN(4); + __bss_start = .; + .bss (NOLOAD) : { *(.bss) . = ALIGN(4); } + _end = .; +} --- /dev/null +++ b/include/configs/davinci_dm355evm.h @@ -0,0 +1,209 @@ +/* + * 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 + +/* 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_SMALLPAGE */ +#define CONFIG_SYS_NAND_LARGEPAGE + +#ifdef CONFIG_SYS_NAND_SMALLPAGE +#define CONFIG_SYS_MAX_NAND_DEVICE 1 +#define CONFIG_SYS_NAND_MAX_CHIPS 1 +#define CONFIG_SYS_NAND_BASE_LIST { 0x02000000, } +#else +/* FIXME should be one device, two chips ... */ +#define CONFIG_SYS_MAX_NAND_DEVICE 2 +#define CONFIG_SYS_NAND_MAX_CHIPS 1 +#define CONFIG_SYS_NAND_BASE_LIST { 0x02000000, 0x02004000, } +#endif + +/* USB: OTG connector */ +/* #define CONFIG_USB_DAVINCI */ + +/* U-Boot command configuration */ +#include <config_cmd_default.h> + +#undef CONFIG_CMD_BDI +#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 + +#ifdef CONFIG_USB_DAVINCI +#define CONFIG_MUSB_HCD +#define CONFIG_CMD_USB +#endif + +/* TEMPORARY -- no safe place to save env, yet */ +#undef CONFIG_CMD_SAVEENV +#define CONFIG_ENV_IS_NOWHERE + +#define CONFIG_SYS_NO_FLASH /* that is, no *NOR* flash */ +#undef CONFIG_CMD_FLASH /* ditto */ +#undef CONFIG_CMD_IMLS /* really! */ + +#define CONFIG_CRC32_VERIFY +#define CONFIG_MX_CYCLIC + +/* U-Boot general configuration */ +#undef CONFIG_USE_IRQ /* No IRQ/FIQ in U-Boot */ +#define CONFIG_MISC_INIT_R +#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_SYS_CONSOLE_INFO_QUIET + +#define CONFIG_ENV_SIZE SZ_16K + +/*#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 /* Boot Argument Buffer Size */ +#define CONFIG_SYS_LOAD_ADDR 0x80700000 /* kernel load 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. + * + * We handle (at compile time) two types of socketed chips: small page, + * with one chipselect; and large page, with two chipselects. + * + * This presents a single read-only partition for all bootloader stuff. + * UBL (1+ block), U-Boot (256KB+), U-Boot environment (one block), and + * extra space to help cope with bad blocks in that data. Linux shouldn't + * care about its detailed layout. It's easy to override this default + * "safe" partitioning. + */ +#ifdef CONFIG_SYS_NAND_SMALLPAGE +/* Assume one chipselect is used, and 16K erase blocks. */ +#define MTDIDS_DEFAULT "nand0=davinci_nand.0" +#define MTDPARTS_DEFAULT_2 "" +#define PART_BOOT "512k(bootloader)ro," +#endif + +#ifdef CONFIG_SYS_NAND_LARGEPAGE +/* Assume both chipselects are used. Use same layout for 128K/256K blocks. */ +#define MTDIDS_DEFAULT "nand0=davinci_nand.0,nand1=davinci_nand.1" +#define MTDPARTS_DEFAULT_2 ";davinci_nand.1:-(filesystem2)" +#define PART_BOOT "1m(bootloader)ro," +/* + * FIXME Make UBI combine most of that 2GB area into one filesystem. + * + * FIXME for 2GB parts, this should appear as *one* composite chip, + * just like it does in Linux... + */ +#endif + +#define PART_KERNEL "4m(kernel)," /* kernel + initramfs */ +#define PART_REST "-(filesystem1)" + +#define MTDPARTS_DEFAULT_1 \ + "mtdparts=davinci_nand.0:" PART_BOOT PART_KERNEL PART_REST + +#define MTDPARTS_DEFAULT \ + MTDPARTS_DEFAULT_1 MTDPARTS_DEFAULT_2 + +#endif /* __CONFIG_H */