From b77026225a319066eaaa11839121a273469a2cf4 Mon Sep 17 00:00:00 2001 From: Gabriel Huau Date: Wed, 2 May 2012 10:48:37 +0000 Subject: ARM : Add support for MINI2440 (s3c2440). Support of the MINI2440 board from FriendlyARM from an old version of u-boot : http://repo.or.cz/r/u-boot-openmoko/mini2440.git Currently, supporting only boot from NOR. Signed-off-by: Gabriel Huau --- board/friendlyarm/mini2440/Makefile | 44 +++++++++++ board/friendlyarm/mini2440/mini2440.c | 134 +++++++++++++++++++++++++++++++ board/friendlyarm/mini2440/mini2440.h | 144 ++++++++++++++++++++++++++++++++++ 3 files changed, 322 insertions(+) create mode 100644 board/friendlyarm/mini2440/Makefile create mode 100644 board/friendlyarm/mini2440/mini2440.c create mode 100644 board/friendlyarm/mini2440/mini2440.h (limited to 'board/friendlyarm') diff --git a/board/friendlyarm/mini2440/Makefile b/board/friendlyarm/mini2440/Makefile new file mode 100644 index 0000000..b88e569 --- /dev/null +++ b/board/friendlyarm/mini2440/Makefile @@ -0,0 +1,44 @@ +# +# (C) Copyright 2012 +# Wolfgang Denk, DENX Software Engineering, wd@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 +# + +include $(TOPDIR)/config.mk + +LIB = $(obj)lib$(BOARD).o + +COBJS := mini2440.o + +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) +SOBJS := $(addprefix $(obj),$(SOBJS)) + +$(LIB): $(obj).depend $(OBJS) $(SOBJS) + $(call cmd_link_o_target, $(OBJS) $(SOBJS)) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/board/friendlyarm/mini2440/mini2440.c b/board/friendlyarm/mini2440/mini2440.c new file mode 100644 index 0000000..e97d981 --- /dev/null +++ b/board/friendlyarm/mini2440/mini2440.c @@ -0,0 +1,134 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH + * Marius Groeger + * + * (C) Copyright 2002 + * David Mueller, ELSOFT AG, + * + * (C) Copyright 2009 + * Michel Pollet + * + * (C) Copyright 2012 + * Gabriel Huau + * + * 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 +#include +#include +#include +#include +#include +#include +#include "mini2440.h" + +DECLARE_GLOBAL_DATA_PTR; + +static inline void pll_delay(unsigned long loops) +{ + __asm__ volatile ("1:\n" + "subs %0, %1, #1\n" + "bne 1b" : "=r" (loops) : "0" (loops)); +} + +int board_early_init_f(void) +{ + struct s3c24x0_clock_power * const clk_power = + s3c24x0_get_base_clock_power(); + + /* to reduce PLL lock time, adjust the LOCKTIME register */ + clk_power->locktime = 0xFFFFFF; /* Max PLL Lock time count */ + clk_power->clkdivn = CLKDIVN_VAL; + + /* configure UPLL */ + clk_power->upllcon = ((U_M_MDIV << 12) + (U_M_PDIV << 4) + U_M_SDIV); + /* some delay between MPLL and UPLL */ + pll_delay(100); + + /* configure MPLL */ + clk_power->mpllcon = ((M_MDIV << 12) + (M_PDIV << 4) + M_SDIV); + + /* some delay between MPLL and UPLL */ + pll_delay(10000); + + return 0; +} + +/* + * Miscellaneous platform dependent initialisations + */ +int board_init(void) +{ + struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio(); + + /* IOMUX Port H : UART Configuration */ + gpio->gphcon = IOMUXH_nCTS0 | IOMUXH_nRTS0 | IOMUXH_TXD0 | IOMUXH_RXD0 | + IOMUXH_TXD1 | IOMUXH_RXD1 | IOMUXH_TXD2 | IOMUXH_RXD2; + + gpio_direction_output(GPH8, 0); + gpio_direction_output(GPH9, 0); + gpio_direction_output(GPH10, 0); + + /* adress of boot parameters */ + gd->bd->bi_boot_params = CONFIG_BOOT_PARAM_ADDR; + + return 0; +} + +int dram_init(void) +{ + struct s3c24x0_memctl *memctl = s3c24x0_get_base_memctl(); + + /* + * Configuring bus width and timing + * Initialize clocks for each bank 0..5 + * Bank 3 and 4 are used for DM9000 + */ + writel(BANK_CONF, &memctl->bwscon); + writel(B0_CONF, &memctl->bankcon[0]); + writel(B1_CONF, &memctl->bankcon[1]); + writel(B2_CONF, &memctl->bankcon[2]); + writel(B3_CONF, &memctl->bankcon[3]); + writel(B4_CONF, &memctl->bankcon[4]); + writel(B5_CONF, &memctl->bankcon[5]); + + /* Bank 6 and 7 are used for DRAM */ + writel(SDRAM_64MB, &memctl->bankcon[6]); + writel(SDRAM_64MB, &memctl->bankcon[7]); + + writel(MEM_TIMING, &memctl->refresh); + writel(BANKSIZE_CONF, &memctl->banksize); + writel(B6_MRSR, &memctl->mrsrb6); + writel(B7_MRSR, &memctl->mrsrb7); + + gd->ram_size = get_ram_size((void *) CONFIG_SYS_SDRAM_BASE, + PHYS_SDRAM_SIZE); + return 0; +} + +int board_eth_init(bd_t *bis) +{ +#ifdef CONFIG_DRIVER_DM9000 + return dm9000_initialize(bis); +#else + return 0; +#endif +} diff --git a/board/friendlyarm/mini2440/mini2440.h b/board/friendlyarm/mini2440/mini2440.h new file mode 100644 index 0000000..db386ea --- /dev/null +++ b/board/friendlyarm/mini2440/mini2440.h @@ -0,0 +1,144 @@ +#ifndef __MINI2440_BOARD_CONF_H__ +#define __MINI2440_BOARD_CONF_H__ + +/* PLL Parameters */ +#define CLKDIVN_VAL 7 +#define M_MDIV 0x7f +#define M_PDIV 0x2 +#define M_SDIV 0x1 + +#define U_M_MDIV 0x38 +#define U_M_PDIV 0x2 +#define U_M_SDIV 0x2 + +/* BWSCON */ +#define DW8 0x0 +#define DW16 0x1 +#define DW32 0x2 +#define WAIT (0x1<<2) +#define UBLB (0x1<<3) + +#define B1_BWSCON (DW32) +#define B2_BWSCON (DW16) +#define B3_BWSCON (DW16 + WAIT + UBLB) +#define B4_BWSCON (DW16 + WAIT + UBLB) +#define B5_BWSCON (DW16) +#define B6_BWSCON (DW32) +#define B7_BWSCON (DW32) + +/* + * Bank Configuration + */ +#define B0_Tacs 0x0 /* 0clk */ +#define B0_Tcos 0x0 /* 0clk */ +#define B0_Tacc 0x7 /* 14clk */ +#define B0_Tcoh 0x0 /* 0clk */ +#define B0_Tah 0x0 /* 0clk */ +#define B0_Tacp 0x0 /* 0clk */ +#define B0_PMC 0x0 /* normal */ + +#define B1_Tacs 0x0 +#define B1_Tcos 0x0 +#define B1_Tacc 0x7 +#define B1_Tcoh 0x0 +#define B1_Tah 0x0 +#define B1_Tacp 0x0 +#define B1_PMC 0x0 + +#define B2_Tacs 0x0 +#define B2_Tcos 0x0 +#define B2_Tacc 0x7 +#define B2_Tcoh 0x0 +#define B2_Tah 0x0 +#define B2_Tacp 0x0 +#define B2_PMC 0x0 + +#define B3_Tacs 0x0 +#define B3_Tcos 0x3 /* 4clk */ +#define B3_Tacc 0x7 +#define B3_Tcoh 0x1 /* 1clk */ +#define B3_Tah 0x3 /* 4clk */ +#define B3_Tacp 0x0 +#define B3_PMC 0x0 + +#define B4_Tacs 0x0 +#define B4_Tcos 0x3 +#define B4_Tacc 0x7 +#define B4_Tcoh 0x1 +#define B4_Tah 0x3 +#define B4_Tacp 0x0 +#define B4_PMC 0x0 + +#define B5_Tacs 0x0 +#define B5_Tcos 0x0 +#define B5_Tacc 0x7 +#define B5_Tcoh 0x0 +#define B5_Tah 0x0 +#define B5_Tacp 0x0 +#define B5_PMC 0x0 + +/* + * SDRAM Configuration + */ +#define SDRAM_MT 0x3 /* SDRAM */ +#define SDRAM_Trcd 0x0 /* 2clk */ +#define SDRAM_SCAN_9 0x1 /* 9bit */ +#define SDRAM_SCAN_10 0x2 /* 10bit */ + +#define SDRAM_64MB ((SDRAM_MT<<15) + (SDRAM_Trcd<<2) + (SDRAM_SCAN_9)) + +/* + * Refresh Parameter + */ +#define REFEN 0x1 /* Refresh enable */ +#define TREFMD 0x0 /* CBR(CAS before RAS)/Auto refresh */ +#define Trp 0x1 /* 3clk */ +#define Trc 0x3 /* 7clk */ +#define Tchr 0x0 /* unused */ +#define REFCNT 1012 /* period=10.37us, HCLK=100Mhz, (2048 + 1-10.37*100) */ + +/* + * MRSR Parameter + */ +#define BL 0x0 +#define BT 0x0 +#define CL 0x3 /* 3 clocks */ +#define TM 0x0 +#define WBL 0x0 + +/* + * BankSize Parameter + */ +#define BK76MAP 0x2 /* 128MB/128MB */ +#define SCLK_EN 0x1 /* SCLK active */ +#define SCKE_EN 0x1 /* SDRAM power down mode enable */ +#define BURST_EN 0x1 /* Burst enable */ + +/* + * Register values + */ +#define BANK_CONF ((0 + (B1_BWSCON<<4) + (B2_BWSCON<<8) + (B3_BWSCON<<12) + \ + (B4_BWSCON<<16) + (B5_BWSCON<<20) + (B6_BWSCON<<24) + \ + (B7_BWSCON<<28))) + +#define B0_CONF ((B0_Tacs<<13) + (B0_Tcos<<11) + (B0_Tacc<<8) + \ + (B0_Tcoh<<6) + (B0_Tah<<4) + (B0_Tacp<<2) + (B0_PMC)) +#define B1_CONF ((B1_Tacs<<13) + (B1_Tcos<<11) + (B1_Tacc<<8) + \ + (B1_Tcoh<<6) + (B1_Tah<<4) + (B1_Tacp<<2) + (B1_PMC)) +#define B2_CONF ((B2_Tacs<<13) + (B2_Tcos<<11) + (B2_Tacc<<8) + \ + (B2_Tcoh<<6) + (B2_Tah<<4) + (B2_Tacp<<2) + (B2_PMC)) +#define B3_CONF ((B3_Tacs<<13) + (B3_Tcos<<11) + (B3_Tacc<<8) + \ + (B3_Tcoh<<6) + (B3_Tah<<4) + (B3_Tacp<<2) + (B3_PMC)) +#define B4_CONF ((B4_Tacs<<13) + (B4_Tcos<<11) + (B4_Tacc<<8) + \ + (B4_Tcoh<<6) + (B4_Tah<<4) + (B4_Tacp<<2) + (B4_PMC)) +#define B5_CONF ((B5_Tacs<<13) + (B5_Tcos<<11) + (B5_Tacc<<8) + \ + (B5_Tcoh<<6) + (B5_Tah<<4) + (B5_Tacp<<2) + (B5_PMC)) + +#define MEM_TIMING (REFEN<<23) + (TREFMD<<22) + (Trp<<20) + \ + (Trc<<18) + (Tchr<<16) + REFCNT + +#define BANKSIZE_CONF (BK76MAP) + (SCLK_EN<<4) + (SCKE_EN<<5) + (BURST_EN<<7) +#define B6_MRSR (CL<<4) +#define B7_MRSR (CL<<4) + +#endif -- cgit v1.1