[U-Boot-Users] [PATCH] Add support for Amstrad Delta (E3).

Jonathan McDowell
2006-08-31T23:00:52Z

On Tue, Jun 13, 2006 at 05:59:27PM +0100, Jonathan McDowell wrote:
> The attached patch adds support for the Amstrad Delta (E3) Videophone.
> Currently the Amstrad primary bootloader provides the main hardware
> initialisation and then loads u-boot to handle user interaction and
> kernel loading.
>
> I'd appreciate any comments you may have. Patch is against current
> git.

I never saw any replies to this. It'd be really nice to see the support
in the mainline u-boot git tree, but there's not a lot of point in me
updating it to latest git if it has major problems that means it won't
be accepted. Is it just that no one had time to have a look, or is there
some work that needs to be done before it's suitable for inclusion? My
E3's happily been booting u-boot with this patch for several months now
without any problems.

> diff --git a/Makefile b/Makefile
> index 440ab2c..659e9b1 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1565,6 +1565,9 @@ netstar_config: unconfig
> omap1510inn_config : unconfig
> @./mkconfig $(@:_config=) arm arm925t omap1510inn
>
> +amsdelta_config : unconfig
> + @./mkconfig $(@:_config=) arm arm925t amsdelta
> +
> omap5912osk_config : unconfig
> @./mkconfig $(@:_config=) arm arm926ejs omap5912osk NULL omap
>
> diff --git a/board/amsdelta/Makefile b/board/amsdelta/Makefile
> new file mode 100644
> index 0000000..4b16cfd
> --- /dev/null
> +++ b/board/amsdelta/Makefile
> @@ -0,0 +1,45 @@
> +#
> +# (C) Copyright 2006 Jonathan McDowell <noodles@earth.li>
> +#
> +# 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 $(TOPDIR)/config.mk
> +
> +LIB = lib$(BOARD).a
> +
> +OBJS := amsdelta.o amsdelta-nand.o
> +
> +$(LIB): $(OBJS)
> + $(AR) crv $@ $^
> +
> +clean:
> + rm -f $(OBJS)
> +
> +distclean: clean
> + rm -f $(LIB) core *.bak .depend
> +
> +#########################################################################
> +
> +.depend: Makefile $(OBJS:.o=.c)
> + $(CC) -M $(CPPFLAGS) $(OBJS:.o=.c) > $@
> +
> +-include .depend
> +
> +#########################################################################
> diff --git a/board/amsdelta/amsdelta-nand.c b/board/amsdelta/amsdelta-nand.c
> new file mode 100644
> index 0000000..a8133d2
> --- /dev/null
> +++ b/board/amsdelta/amsdelta-nand.c
> @@ -0,0 +1,157 @@
> +/*
> + * Copyright (C) 2006 Jonathan McDowell <noodles@earth.li>
> + *
> + * 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 <common.h>
> +
> +#if (CONFIG_COMMANDS & CFG_CMD_NAND)
> +
> +#include <arm925t.h>
> +#include <asm/errno.h>
> +#include <configs/omap1510.h>
> +#include <nand.h>
> +
> +#define AMSDELTA_LATCH2_NAND_NCE 0x0004
> +#define AMSDELTA_LATCH2_NAND_NRE 0x0008
> +#define AMSDELTA_LATCH2_NAND_NWP 0x0010
> +#define AMSDELTA_LATCH2_NAND_NWE 0x0020
> +#define AMSDELTA_LATCH2_NAND_ALE 0x0040
> +#define AMSDELTA_LATCH2_NAND_CLE 0x0080
> +#define AMSDELTA_NAND_RB (1 << 12)
> +
> +static u16 amsdelta_latch2_val = 0;
> +
> +static void amsdelta_latch2_write(u16 mask, u16 value)
> +{
> + amsdelta_latch2_val &= ~mask;
> + amsdelta_latch2_val |= value;
> + *(volatile u16 *) 0x08000000 = amsdelta_latch2_val;
> +}
> +
> +static void amsdelta_hwcontrol(struct mtd_info *mtd, int cmd)
> +{
> + switch (cmd) {
> + case NAND_CTL_SETCLE:
> + amsdelta_latch2_write(AMSDELTA_LATCH2_NAND_CLE,
> + AMSDELTA_LATCH2_NAND_CLE);
> + break;
> + case NAND_CTL_CLRCLE:
> + amsdelta_latch2_write(AMSDELTA_LATCH2_NAND_CLE, 0);
> + break;
> + case NAND_CTL_SETALE:
> + amsdelta_latch2_write(AMSDELTA_LATCH2_NAND_ALE,
> + AMSDELTA_LATCH2_NAND_ALE);
> + break;
> + case NAND_CTL_CLRALE:
> + amsdelta_latch2_write(AMSDELTA_LATCH2_NAND_ALE, 0);
> + break;
> + case NAND_CTL_SETNCE:
> + amsdelta_latch2_write(AMSDELTA_LATCH2_NAND_NCE, 0);
> + break;
> + case NAND_CTL_CLRNCE:
> + amsdelta_latch2_write(AMSDELTA_LATCH2_NAND_NCE,
> + AMSDELTA_LATCH2_NAND_NCE);
> + break;
> + }
> +}
> +
> +static int amsdelta_dev_ready(struct mtd_info *mtdinfo)
> +{
> + u32 i;
> +
> + gpiosetdir(AMSDELTA_NAND_RB, AMSDELTA_NAND_RB);
> + i = *(volatile u32 *) GPIO_DATA_INPUT_REG;
> +
> + return ((i & AMSDELTA_NAND_RB) == AMSDELTA_NAND_RB);
> +}
> +
> +static u_char amsdelta_read_byte(struct mtd_info *mtd)
> +{
> + u_char val;
> +
> + amsdelta_latch2_write(AMSDELTA_LATCH2_NAND_NRE, 0);
> + *(volatile u8 *) MPUIO_DIR_CONTROL_REG = ~0;
> + udelay(1);
> + val = *(volatile u8 *) MPUIO_DATA_INPUT_REG;
> + amsdelta_latch2_write(AMSDELTA_LATCH2_NAND_NRE,
> + AMSDELTA_LATCH2_NAND_NRE);
> +
> + return val;
> +}
> +
> +static void amsdelta_write_byte(struct mtd_info *mtd, u_char byte)
> +{
> + amsdelta_latch2_write(AMSDELTA_LATCH2_NAND_NWE, 0);
> + *(volatile u8 *) MPUIO_DIR_CONTROL_REG = 0;
> + udelay(1);
> + *(volatile u8 *) MPUIO_DATA_OUTPUT_REG = byte;
> + amsdelta_latch2_write(AMSDELTA_LATCH2_NAND_NWE,
> + AMSDELTA_LATCH2_NAND_NWE);
> +}
> +
> +static void amsdelta_write_buf(struct mtd_info *mtd, const u_char *buf,
> + int len)
> +{
> + int i;
> +
> + for (i=0; i<len; i++)
> + amsdelta_write_byte(mtd, buf[i]);
> +}
> +
> +static void amsdelta_read_buf(struct mtd_info *mtd, u_char *buf, int len)
> +{
> + int i;
> +
> + for (i=0; i<len; i++)
> + buf[i] = amsdelta_read_byte(mtd);
> +}
> +
> +static int amsdelta_verify_buf(struct mtd_info *mtd, const u_char *buf,
> + int len)
> +{
> + int i;
> +
> + for (i=0; i<len; i++)
> + if (buf[i] != amsdelta_read_byte(mtd))
> + return -EFAULT;
> +
> + return 0;
> +}
> +
> +/*
> + * Our board specific NAND initialisation.
> + */
> +void board_nand_init(struct nand_chip *nand)
> +{
> + amsdelta_latch2_write(~0, AMSDELTA_LATCH2_NAND_NRE |
> + AMSDELTA_LATCH2_NAND_NWE | AMSDELTA_LATCH2_NAND_NCE);
> +
> + nand->hwcontrol = amsdelta_hwcontrol;
> + nand->dev_ready = amsdelta_dev_ready;
> +
> + nand->read_byte = amsdelta_read_byte;
> + nand->write_byte = amsdelta_write_byte;
> + nand->read_buf = amsdelta_read_buf;
> + nand->write_buf = amsdelta_write_buf;
> + nand->verify_buf = amsdelta_verify_buf;
> +
> + nand->eccmode = NAND_ECC_SOFT;
> + nand->chip_delay = 12;
> +}
> +
> +#endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */
> diff --git a/board/amsdelta/amsdelta.c b/board/amsdelta/amsdelta.c
> new file mode 100644
> index 0000000..532af8c
> --- /dev/null
> +++ b/board/amsdelta/amsdelta.c
> @@ -0,0 +1,85 @@
> +/*
> + * Based on board/omap5912osk/omap5912osk.c
> + *
> + * Copyright (C) 2006 Mark Underwood <basicmark@yahoo.com>
> + * Copyright (C) 2006 Jonathan McDowell <noodles@earth.li>
> + *
> + * 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 <common.h>
> +#include <configs/omap1510.h>
> +
> +static inline void delay (unsigned long loops)
> +{
> + __asm__ volatile ("1:\n"
> + "subs %0, %1, #1\n"
> + "bne 1b":"=r" (loops):"0" (loops));
> +}
> +
> +/*
> + * Miscellaneous platform dependent initialisations.
> + *
> + * Very little to do here as PBL has already done it for us.
> + */
> +int board_init (void)
> +{
> + DECLARE_GLOBAL_DATA_PTR;
> +
> + /*
> + * MACH_AMS_DELTA is 862 for a 2.6 kernel.
> + */
> + gd->bd->bi_arch_number = 862;
> +
> + /* adress of boot parameters */
> + gd->bd->bi_boot_params = 0x10000100;
> +
> + /*
> + * this speeds up your boot a quite a bit. However to make it
> + * work, you need make sure your kernel startup flush bug is fixed.
> + * ... rkw ...
> + */
> + icache_enable ();
> +
> + return 0;
> +}
> +
> +/* For now we have no flash! */
> +unsigned long flash_init (void)
> +{
> + return 0;
> +}
> +
> +/* PBL as done all the lowlevel init */
> +void lowlevel_init (void)
> +{
> + /* Light the email LED */
> + *(volatile u8 *) 0x01000000 = 4;
> +}
> +
> +/******************************
> + Routine:
> + Description:
> +******************************/
> +int dram_init (void)
> +{
> + DECLARE_GLOBAL_DATA_PTR;
> +
> + gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
> + gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
> +
> + return 0;
> +}
> diff --git a/board/amsdelta/config.mk b/board/amsdelta/config.mk
> new file mode 100644
> index 0000000..9998cdd
> --- /dev/null
> +++ b/board/amsdelta/config.mk
> @@ -0,0 +1,20 @@
> +#
> +# Amstrad E3 (Delta) Videophone
> +#
> +# http://www.amstrad.com/products/emailers/e3.html
> +# http://www.earth.li/~noodles/hardware-e3.html
> +#
> +# 1 bank of 32MB SDRAM
> +# Physical Address:
> +# 1000'0000 to 2000'0000
> +#
> +# Linux-Kernel is expected to be at 1000'8000, entry 1000'8000
> +# (mem base + reserved)
> +#
> +# we load ourself to 11f00000
> +#
> +TEXT_BASE = 0x11f00000
> +#
> +# We want NAND support.
> +#
> +BOARDLIBS = drivers/nand/libnand.a
> diff --git a/board/amsdelta/u-boot.lds b/board/amsdelta/u-boot.lds
> new file mode 100644
> index 0000000..f35a3ab
> --- /dev/null
> +++ b/board/amsdelta/u-boot.lds
> @@ -0,0 +1,56 @@
> +/*
> + * (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/arm925t/start.o (.text)
> + *(.text)
> + }
> +
> + . = ALIGN(4);
> + .rodata : { *(.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 : { *(.bss) }
> + _end = .;
> +}
> diff --git a/cpu/arm925t/start.S b/cpu/arm925t/start.S
> index acd7742..c2c2adb 100644
> --- a/cpu/arm925t/start.S
> +++ b/cpu/arm925t/start.S
> @@ -125,6 +125,7 @@ reset:
> orr r0,r0,#0xd3
> msr cpsr,r0
>
> +#ifndef CONFIG_AMSDELTA
> /*
> * Set up 925T mode
> */
> @@ -159,6 +160,7 @@ poll1:
> ldrh r1, [r0]
> ands r1, r1, #0x01
> beq poll1
> +#endif
>
> /*
> * we do sys-critical inits only at reboot,
> diff --git a/include/configs/amsdelta.h b/include/configs/amsdelta.h
> new file mode 100644
> index 0000000..180bf84
> --- /dev/null
> +++ b/include/configs/amsdelta.h
> @@ -0,0 +1,162 @@
> +/*
> + * Copyright (C) 2006 Mark Underwood <basicmark@yahoo.com>
> + * Copyright (C) 2006 Jonathan McDowell <noodles@earth.li>
> + *
> + * Configuation settings for the Amstrad E3 videophone (codename Delta)
> + *
> + * 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
> + */
> +
> +#ifndef __CONFIG_H
> +#define __CONFIG_H
> +
> +/*
> + * High Level Configuration Options
> + * (easy to change)
> + */
> +#define CONFIG_ARM925T 1 /* This is an arm925t CPU core */
> +#define CONFIG_OMAP 1 /* in a TI OMAP core */
> +#define CONFIG_OMAP1510 1 /* 5910 is sort of a 1510 */
> +#define CONFIG_AMSDELTA 1 /* An Amstrad Delta (E3) */
> +
> +/* input clock of PLL */
> +/* the not sure what the E3 sys clock is. Do we need to know? */
> +#define CONFIG_SYS_CLK_FREQ 12000000
> +
> +#undef CONFIG_USE_IRQ /* we don't need IRQ/FIQ stuff */
> +
> +#define CONFIG_CMDLINE_TAG 1 /* enable passing of ATAGs */
> +#define CONFIG_SETUP_MEMORY_TAGS 1
> +
> +/*
> + * Size of malloc() pool
> + */
> +#define CFG_MALLOC_LEN (CFG_ENV_SIZE + 128*1024)
> +#define CFG_GBL_DATA_SIZE 128 /* size in bytes reserved for initial data */
> +
> +/*
> + * NS16550 Configuration
> + */
> +#define CFG_NS16550
> +#define CFG_NS16550_SERIAL
> +#define CFG_NS16550_REG_SIZE (-4)
> +#define CFG_NS16550_CLK 12000000 /* can be 12M/32Khz or 48Mhz */
> +#define CFG_NS16550_COM1 0xfffb0000 /* UART1, the EXP port */
> +
> +/*
> + * select serial console configuration
> + */
> +#define CONFIG_SERIAL1 1 /* we use SERIAL 1 */
> +
> +/* allow to overwrite serial and ethaddr */
> +#define CONFIG_ENV_OVERWRITE
> +#define CONFIG_CONS_INDEX 1
> +#define CONFIG_BAUDRATE 115200
> +#define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
> +
> +//((CONFIG_CMD_DFL & (~CFG_CMD_IMLS))UL) /* Default config - IMLS*/
> +
> +#define CONFIG_COMMANDS ((CONFIG_CMD_DFL & \
> + ~(CFG_CMD_NET | CFG_CMD_FPGA | \
> + CFG_CMD_NFS | CFG_CMD_FLASH | \
> + CFG_CMD_ENV | CFG_CMD_IMLS)) | \
> + CFG_CMD_ASKENV | CFG_CMD_NAND | \
> + CFG_CMD_JFFS2)
> +
> +#define CONFIG_BOOTP_MASK CONFIG_BOOTP_DEFAULT
> +
> +#define CFG_HUSH_PARSER 1
> +#define CFG_PROMPT_HUSH_PS2 "> "
> +
> +/* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
> +#include <cmd_confdefs.h>
> +#include <configs/omap1510.h>
> +
> +#define CONFIG_BOOTDELAY 30
> +#define CONFIG_BOOTARGS "mem=32M console=tty0 console=ttyS0,115200n8 root=/dev/mtdblock4 rootfstype=jffs2"
> +#define CONFIG_BOOTCOMMAND "nboot 11d00000 0 ; bootm 11d00000"
> +
> +/*
> + * Miscellaneous configurable options
> + */
> +#define CFG_LONGHELP /* undef to save memory */
> +#define CFG_PROMPT "E3 # " /* Monitor Command Prompt */
> +#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
> +/* Print Buffer Size */
> +#define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16)
> +#define CFG_MAXARGS 16 /* max number of command args */
> +#define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */
> +
> +#define CFG_MEMTEST_START 0x10000000 /* memtest works on */
> +#define CFG_MEMTEST_END 0x12000000 /* 32 MB in DRAM */
> +
> +#undef CFG_CLKS_IN_HZ /* everything, incl board info, in Hz */
> +
> +#define CFG_LOAD_ADDR 0x10000000 /* default load address */
> +
> +/* The 1610 has 6 timers, they can be driven by the RefClk (12Mhz) or by
> + * DPLL1. This time is further subdivided by a local divisor.
> + */
> +#define CFG_TIMERBASE 0xFFFEC500 /* use timer 1 */
> +#define CFG_PVT 7 /* 2^(pvt+1), divide by 256 */
> +#define CFG_HZ ((CONFIG_SYS_CLK_FREQ)/(2 << CFG_PVT))
> +
> +/*-----------------------------------------------------------------------
> + * Stack sizes
> + *
> + * The stack sizes are set up in start.S using the settings below
> + */
> +#define CONFIG_STACKSIZE (128*1024) /* regular stack */
> +#ifdef CONFIG_USE_IRQ
> +#define CONFIG_STACKSIZE_IRQ (4*1024) /* IRQ stack */
> +#define CONFIG_STACKSIZE_FIQ (4*1024) /* FIQ stack */
> +#endif
> +
> +/*-----------------------------------------------------------------------
> + * Physical Memory Map
> + */
> +#define CONFIG_NR_DRAM_BANKS 1 /* we have 1 bank of DRAM */
> +#define PHYS_SDRAM_1 0x10000000 /* SDRAM Bank #1 */
> +#define PHYS_SDRAM_1_SIZE 0x02000000 /* 32 MB */
> +
> +#define CFG_NO_FLASH
> +
> +/*
> + * NAND config.
> + */
> +#define NAND_MAX_CHIPS 1
> +#define CFG_MAX_NAND_DEVICE 1
> +#define CFG_NAND_BASE 0x80000000
> +
> +/*
> + * Environment in mtd2 on NAND.
> + */
> +#define CFG_ENV_IS_IN_NAND
> +#define CFG_ENV_SIZE 0x40000 /* Total size of environment */
> +#define CFG_ENV_OFFSET 0x003C0000 /* 3.75M into flash */
> +
> +/*
> + * JFFS2 (mtd4) config.
> + */
> +#define CONFIG_JFFS2_NAND
> +#define CONFIG_JFFS2_DEV "nand0"
> +#define CONFIG_JFFS2_PART_OFFSET 0x00440000 /* 4.25M into flash */
> +#define CONFIG_JFFS2_PART_SIZE (27*1024*1024)
> +
> +#endif /* __CONFIG_H */

J.

--
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