diff options
Diffstat (limited to 'board')
| -rw-r--r-- | board/karo/tx25/Makefile | 51 | ||||
| -rw-r--r-- | board/karo/tx25/config.mk | 5 | ||||
| -rw-r--r-- | board/karo/tx25/lowlevel_init.S | 131 | ||||
| -rw-r--r-- | board/karo/tx25/tx25.c | 176 |
4 files changed, 363 insertions, 0 deletions
diff --git a/board/karo/tx25/Makefile b/board/karo/tx25/Makefile new file mode 100644 index 0000000..b0e610f --- /dev/null +++ b/board/karo/tx25/Makefile @@ -0,0 +1,51 @@ +# +# (C) Copyright 2009 DENX Software Engineering +# Author: John Rigby <jcrigby@gmail.com> +# +# 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 := tx25.o +SOBJS := lowlevel_init.o + +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 + +######################################################################### + +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### + diff --git a/board/karo/tx25/config.mk b/board/karo/tx25/config.mk new file mode 100644 index 0000000..732a14a --- /dev/null +++ b/board/karo/tx25/config.mk @@ -0,0 +1,5 @@ +ifdef CONFIG_NAND_SPL +TEXT_BASE = 0x81ec0000 +else +TEXT_BASE = 0x81f00000 +endif diff --git a/board/karo/tx25/lowlevel_init.S b/board/karo/tx25/lowlevel_init.S new file mode 100644 index 0000000..823df10 --- /dev/null +++ b/board/karo/tx25/lowlevel_init.S @@ -0,0 +1,131 @@ +/* + * (C) Copyright 2009 DENX Software Engineering + * Author: John Rigby <jrigby@gmail.com> + * + * Based on U-Boot and RedBoot sources for several different i.mx + * platforms. + * + * 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 <asm/macro.h> + +.macro init_aips + write32 0x43f00000, 0x77777777 + write32 0x43f00004, 0x77777777 + write32 0x43f00000, 0x77777777 + write32 0x53f00004, 0x77777777 +.endm + +.macro init_max + write32 0x43f04000, 0x43210 + write32 0x43f04100, 0x43210 + write32 0x43f04200, 0x43210 + write32 0x43f04300, 0x43210 + write32 0x43f04400, 0x43210 + + write32 0x43f04010, 0x10 + write32 0x43f04110, 0x10 + write32 0x43f04210, 0x10 + write32 0x43f04310, 0x10 + write32 0x43f04410, 0x10 + + write32 0x43f04800, 0x0 + write32 0x43f04900, 0x0 + write32 0x43f04a00, 0x0 + write32 0x43f04b00, 0x0 + write32 0x43f04c00, 0x0 +.endm + +.macro init_m3if + write32 0xb8003000, 0x1 +.endm + +.macro init_clocks + /* + * clocks + * + * first enable CLKO debug output + * 0x40000000 enables the debug CLKO signal + * 0x05000000 sets CLKO divider to 6 + * 0x00600000 makes CLKO parent clk the USB clk + */ + write32 0x53f80064, 0x45600000 + write32 0x53f80008, 0x20034000 + + /* + * enable all implemented clocks in all three + * clock control registers + */ + write32 0x53f8000c, 0x1fffffff + write32 0x53f80010, 0xffffffff + write32 0x53f80014, 0xfdfff +.endm + +.macro init_ddrtype + /* + * ddr_type is 3.3v SDRAM + */ + write32 0x43fac454, 0x800 +.endm + +/* + * sdram controller init + */ +.macro init_sdram_bank bankaddr, ctl, cfg + ldr r0, =0xb8001000 + ldr r2, =\bankaddr + /* + * reset SDRAM controller + * then wait for initialization to complete + */ + ldr r1, =(1 << 1) + str r1, [r0, #0x10] +1: ldr r3, [r0, #0x10] + tst r3, #(1 << 31) + beq 1b + + ldr r1, =0x95728 + str r1, [r0, #\cfg] /* config */ + + ldr r1, =0x92116480 /* control | precharge */ + str r1, [r0, #\ctl] /* write command to controller */ + str r1, [r2, #0x400] /* command encoded in address */ + + ldr r1, =0xa2116480 /* auto refresh */ + str r1, [r0, #\ctl] + ldrb r3, [r2] /* read dram twice to auto refresh */ + ldrb r3, [r2] + + ldr r1, =0xb2116480 /* control | load mode */ + str r1, [r0, #\ctl] /* write command to controller */ + strb r1, [r2, #0x33] /* command encoded in address */ + + ldr r1, =0x82116480 /* control | normal (0)*/ + str r1, [r0, #\ctl] /* write command to controller */ +.endm + +.globl lowlevel_init +lowlevel_init: + init_aips + init_max + init_m3if + init_clocks + + init_sdram_bank 0x80000000, 0x0, 0x4 + + init_sdram_bank 0x90000000, 0x8, 0xc + mov pc, lr diff --git a/board/karo/tx25/tx25.c b/board/karo/tx25/tx25.c new file mode 100644 index 0000000..4d6a96d --- /dev/null +++ b/board/karo/tx25/tx25.c @@ -0,0 +1,176 @@ +/* + * (C) Copyright 2009 DENX Software Engineering + * Author: John Rigby <jrigby@gmail.com> + * + * Based on imx27lite.c: + * Copyright (C) 2008,2009 Eric Jarrige <jorasse@users.sourceforge.net> + * Copyright (C) 2009 Ilya Yanok <yanok@emcraft.com> + * And: + * RedBoot tx25_misc.c Copyright (C) 2009 Red Hat + * + * 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 <asm/io.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/imx25-pinmux.h> + +static void mdelay(int n) +{ + while (n-- > 0) + udelay(1000); +} + +DECLARE_GLOBAL_DATA_PTR; + +#ifdef CONFIG_FEC_MXC +void tx25_fec_init(void) +{ + struct iomuxc_mux_ctl *muxctl; + struct iomuxc_pad_ctl *padctl; + u32 val; + u32 gpio_mux_mode = MX25_PIN_MUX_MODE(5); + struct gpio_regs *gpio4 = (struct gpio_regs *)IMX_GPIO4_BASE; + struct gpio_regs *gpio3 = (struct gpio_regs *)IMX_GPIO3_BASE; + u32 saved_rdata0_mode, saved_rdata1_mode, saved_rx_dv_mode; + + debug("tx25_fec_init\n"); + /* + * fec pin init is generic + */ + mx25_fec_init_pins(); + + /* + * Set up the FEC_RESET_B and FEC_ENABLE GPIO pins. + * + * FEC_RESET_B: gpio4[7] is ALT 5 mode of pin D13 + * FEC_ENABLE_B: gpio4[9] is ALT 5 mode of pin D11 + */ + muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE; + padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE; + + writel(gpio_mux_mode, &muxctl->pad_d13); + writel(gpio_mux_mode, &muxctl->pad_d11); + + writel(0x0, &padctl->pad_d13); + writel(0x0, &padctl->pad_d11); + + /* drop PHY power and assert reset (low) */ + val = readl(&gpio4->dr) & ~((1 << 7) | (1 << 9)); + writel(val, &gpio4->dr); + val = readl(&gpio4->dir) | (1 << 7) | (1 << 9); + writel(val, &gpio4->dir); + + mdelay(5); + + debug("resetting phy\n"); + + /* turn on PHY power leaving reset asserted */ + val = readl(&gpio4->dr) | 1 << 9; + writel(val, &gpio4->dr); + + mdelay(10); + + /* + * Setup some strapping pins that are latched by the PHY + * as reset goes high. + * + * Set PHY mode to 111 + * mode0 comes from FEC_RDATA0 which is GPIO 3_10 in mux mode 5 + * mode1 comes from FEC_RDATA1 which is GPIO 3_11 in mux mode 5 + * mode2 is tied high so nothing to do + * + * Turn on RMII mode + * RMII mode is selected by FEC_RX_DV which is GPIO 3_12 in mux mode + */ + /* + * save three current mux modes and set each to gpio mode + */ + saved_rdata0_mode = readl(&muxctl->pad_fec_rdata0); + saved_rdata1_mode = readl(&muxctl->pad_fec_rdata1); + saved_rx_dv_mode = readl(&muxctl->pad_fec_rx_dv); + + writel(gpio_mux_mode, &muxctl->pad_fec_rdata0); + writel(gpio_mux_mode, &muxctl->pad_fec_rdata1); + writel(gpio_mux_mode, &muxctl->pad_fec_rx_dv); + + /* + * set each to 1 and make each an output + */ + val = readl(&gpio3->dr) | (1 << 10) | (1 << 11) | (1 << 12); + writel(val, &gpio3->dr); + val = readl(&gpio3->dir) | (1 << 10) | (1 << 11) | (1 << 12); + writel(val, &gpio3->dir); + + mdelay(22); /* this value came from RedBoot */ + + /* + * deassert PHY reset + */ + val = readl(&gpio4->dr) | 1 << 7; + writel(val, &gpio4->dr); + writel(val, &gpio4->dr); + + mdelay(5); + + /* + * set FEC pins back + */ + writel(saved_rdata0_mode, &muxctl->pad_fec_rdata0); + writel(saved_rdata1_mode, &muxctl->pad_fec_rdata1); + writel(saved_rx_dv_mode, &muxctl->pad_fec_rx_dv); +} +#else +#define tx25_fec_init() +#endif + +int board_init() +{ +#ifdef CONFIG_MXC_UART + extern void mx25_uart_init_pins(void); + + mx25_uart_init_pins(); +#endif + return 0; +} + +int board_late_init(void) +{ + tx25_fec_init(); + return 0; +} + +int dram_init (void) +{ + + gd->bd->bi_dram[0].start = PHYS_SDRAM_1; + gd->bd->bi_dram[0].size = get_ram_size((volatile void *)PHYS_SDRAM_1, + PHYS_SDRAM_1_SIZE); +#if CONFIG_NR_DRAM_BANKS > 1 + gd->bd->bi_dram[1].start = PHYS_SDRAM_2; + gd->bd->bi_dram[1].size = get_ram_size((volatile void *)PHYS_SDRAM_2, + PHYS_SDRAM_2_SIZE); +#endif + + return 0; +} + +int checkboard(void) +{ + printf("KARO TX25\n"); + return 0; +} |