diff options
Diffstat (limited to 'board')
| -rw-r--r-- | board/edb93xx/Makefile | 50 | ||||
| -rw-r--r-- | board/edb93xx/config.mk | 33 | ||||
| -rw-r--r-- | board/edb93xx/early_udelay.h | 34 | ||||
| -rw-r--r-- | board/edb93xx/edb93xx.c | 110 | ||||
| -rw-r--r-- | board/edb93xx/flash_cfg.c | 38 | ||||
| -rw-r--r-- | board/edb93xx/pll_cfg.c | 58 | ||||
| -rw-r--r-- | board/edb93xx/pll_cfg.h | 72 | ||||
| -rw-r--r-- | board/edb93xx/sdram_cfg.c | 146 | ||||
| -rw-r--r-- | board/edb93xx/sdram_cfg.h | 144 |
9 files changed, 0 insertions, 685 deletions
diff --git a/board/edb93xx/Makefile b/board/edb93xx/Makefile deleted file mode 100644 index dcaed06..0000000 --- a/board/edb93xx/Makefile +++ /dev/null @@ -1,50 +0,0 @@ -# -# (C) Copyright 2003-2006 -# 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 := edb93xx.o flash_cfg.o pll_cfg.o sdram_cfg.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)) - -clean: - rm -f $(SOBJS) $(OBJS) - -distclean: clean - rm -f $(LIB) core *.bak .depend - -######################################################################### - -# defines $(obj).depend target -include $(SRCTREE)/rules.mk - -sinclude $(obj).depend - -######################################################################### diff --git a/board/edb93xx/config.mk b/board/edb93xx/config.mk deleted file mode 100644 index fab59ef..0000000 --- a/board/edb93xx/config.mk +++ /dev/null @@ -1,33 +0,0 @@ -LDSCRIPT := $(SRCTREE)/arch/arm/cpu/arm920t/ep93xx/u-boot.lds - -ifdef CONFIG_EDB9301 -CONFIG_SYS_TEXT_BASE = 0x05700000 -endif - -ifdef CONFIG_EDB9302 -CONFIG_SYS_TEXT_BASE = 0x05700000 -endif - -ifdef CONFIG_EDB9302A -CONFIG_SYS_TEXT_BASE = 0xc5700000 -endif - -ifdef CONFIG_EDB9307 -CONFIG_SYS_TEXT_BASE = 0x01f00000 -endif - -ifdef CONFIG_EDB9307A -CONFIG_SYS_TEXT_BASE = 0xc1f00000 -endif - -ifdef CONFIG_EDB9312 -CONFIG_SYS_TEXT_BASE = 0x01f00000 -endif - -ifdef CONFIG_EDB9315 -CONFIG_SYS_TEXT_BASE = 0x01f00000 -endif - -ifdef CONFIG_EDB9315A -CONFIG_SYS_TEXT_BASE = 0xc1f00000 -endif diff --git a/board/edb93xx/early_udelay.h b/board/edb93xx/early_udelay.h deleted file mode 100644 index 185283d..0000000 --- a/board/edb93xx/early_udelay.h +++ /dev/null @@ -1,34 +0,0 @@ -/* - * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.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 <common.h> - -/* delay execution before timers are initialized */ -static inline void early_udelay(uint32_t usecs) -{ - /* loop takes 4 cycles at 5.0ns (fastest case, running at 200MHz) */ - register uint32_t loops = usecs * (1000 / 20); - - __asm__ volatile ("1:\n" - "subs %0, %1, #1\n" - "bne 1b":"=r" (loops):"0" (loops)); -} diff --git a/board/edb93xx/edb93xx.c b/board/edb93xx/edb93xx.c deleted file mode 100644 index dde30ff..0000000 --- a/board/edb93xx/edb93xx.c +++ /dev/null @@ -1,110 +0,0 @@ -/* - * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net> - * - * (C) Copyright 2002 2003 - * Network Audio Technologies, Inc. <www.netaudiotech.com> - * Adam Bezanson <bezanson@netaudiotech.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 <common.h> -#include <netdev.h> -#include <asm/arch/ep93xx.h> -#include <asm/io.h> - -DECLARE_GLOBAL_DATA_PTR; - -#define MAX_BANK_SIZE 0x04000000 /* 64 MB */ - -static ulong const bank_addr[CONFIG_NR_DRAM_BANKS] = { - PHYS_SDRAM_1, -#ifdef PHYS_SDRAM_2 - PHYS_SDRAM_2, -#endif -#ifdef PHYS_SDRAM_3 - PHYS_SDRAM_3, -#endif -#ifdef PHYS_SDRAM_4 - PHYS_SDRAM_4 -#endif -}; - -int board_init(void) -{ - struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE; - - icache_enable(); - -#ifdef USE_920T_MMU - dcache_enable(); -#endif - - /* - * set UARTBAUD bit to drive UARTs with 14.7456MHz instead of - * 14.7456/2 MHz - */ - uint32_t value = readl(&syscon->pwrcnt); - value |= SYSCON_PWRCNT_UART_BAUD; - writel(value, &syscon->pwrcnt); - - /* Enable the uart in devicecfg */ - value = readl(&syscon->devicecfg); - value |= 1<<18 /* U1EN */; - writel(0xAA, &syscon->sysswlock); - writel(value, &syscon->devicecfg); - - /* Machine number, as defined in linux/arch/arm/tools/mach-types */ - gd->bd->bi_arch_number = CONFIG_MACH_TYPE; - - /* adress of boot parameters */ - gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR; - - /* We have a console */ - gd->have_console = 1; - - return 0; -} - -int board_eth_init(bd_t *bd) -{ - return ep93xx_eth_initialize(0, MAC_BASE); -} - -int dram_init(void) -{ - unsigned int *src, *dst; - int i; - - for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { - const ulong bank_size = get_ram_size((long *)bank_addr[i], - MAX_BANK_SIZE); - if (bank_size) { - gd->bd->bi_dram[i].start = bank_addr[i]; - gd->bd->bi_dram[i].size = bank_size; - } - } - - /* copy exception vectors */ - src = (unsigned int *)_armboot_start; - dst = (unsigned int *)PHYS_SDRAM_1; - memcpy(dst, src, 16 * sizeof(unsigned int)); - - return 0; -} diff --git a/board/edb93xx/flash_cfg.c b/board/edb93xx/flash_cfg.c deleted file mode 100644 index a4c2048..0000000 --- a/board/edb93xx/flash_cfg.c +++ /dev/null @@ -1,38 +0,0 @@ -/* - * Flash setup for Cirrus edb93xx boards - * - * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.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 <common.h> -#include <asm/arch/ep93xx.h> -#include <asm/io.h> - -#define SMC_BCR6_VALUE (2 << SMC_BCR_IDCY_SHIFT | 5 << SMC_BCR_WST1_SHIFT | \ - SMC_BCR_BLE | 2 << SMC_BCR_WST2_SHIFT | \ - 1 << SMC_BCR_MW_SHIFT) - -void flash_cfg(void) -{ - struct smc_regs *smc = (struct smc_regs *)SMC_BASE; - - writel(SMC_BCR6_VALUE, &smc->bcr6); -} diff --git a/board/edb93xx/pll_cfg.c b/board/edb93xx/pll_cfg.c deleted file mode 100644 index a687af0..0000000 --- a/board/edb93xx/pll_cfg.c +++ /dev/null @@ -1,58 +0,0 @@ -/* - * PLL setup for Cirrus edb93xx boards - * - * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net> - * - * Copyright (C) 2006 Dominic Rath <Dominic.Rath@gmx.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 <common.h> -#include <asm/io.h> -#include "pll_cfg.h" -#include "early_udelay.h" - -void pll_cfg(void) -{ - struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE; - - /* setup PLL1 */ - writel(CLKSET1_VAL, &syscon->clkset1); - - /* - * flush the pipeline - * writing to CLKSET1 causes the EP93xx to enter standby for between - * 8 ms to 16 ms, until PLL1 stabilizes - */ - asm("nop"); - asm("nop"); - asm("nop"); - asm("nop"); - asm("nop"); - - /* setup PLL2 */ - writel(CLKSET2_VAL, &syscon->clkset2); - - /* - * the user's guide recommends to wait at least 1 ms for PLL2 to - * stabilize - */ - early_udelay(1000); -} diff --git a/board/edb93xx/pll_cfg.h b/board/edb93xx/pll_cfg.h deleted file mode 100644 index 0b6f469..0000000 --- a/board/edb93xx/pll_cfg.h +++ /dev/null @@ -1,72 +0,0 @@ -/* - * PLL register values for Cirrus edb93xx boards - * - * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.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 <config.h> -#include <asm/arch/ep93xx.h> - -#if defined(CONFIG_EDB9301) || defined(CONFIG_EDB9302) || \ - defined(CONFIG_EDB9302A) -/* - * fclk_div: 2, nbyp1: 1, hclk_div: 5, pclk_div: 2 - * pll1_x1: 294912000.000000, pll1_x2ip: 36864000.000000, - * pll1_x2: 331776000.000000, pll1_out: 331776000.000000 - */ -#define CLKSET1_VAL (7 << SYSCON_CLKSET_PLL_X2IPD_SHIFT | \ - 8 << SYSCON_CLKSET_PLL_X2FBD2_SHIFT | \ - 19 << SYSCON_CLKSET_PLL_X1FBD1_SHIFT | \ - 1 << SYSCON_CLKSET1_PCLK_DIV_SHIFT | \ - 3 << SYSCON_CLKSET1_HCLK_DIV_SHIFT | \ - SYSCON_CLKSET1_NBYP1 | \ - 1 << SYSCON_CLKSET1_FCLK_DIV_SHIFT) -#elif defined(CONFIG_EDB9307) || defined(CONFIG_EDB9307A) || \ - defined CONFIG_EDB9312 || defined(CONFIG_EDB9315) || \ - defined(CONFIG_EDB9315A) -/* - * fclk_div: 2, nbyp1: 1, hclk_div: 4, pclk_div: 2 - * pll1_x1: 3096576000.000000, pll1_x2ip: 129024000.000000, - * pll1_x2: 3999744000.000000, pll1_out: 1999872000.000000 - */ -#define CLKSET1_VAL (23 << SYSCON_CLKSET_PLL_X2IPD_SHIFT | \ - 30 << SYSCON_CLKSET_PLL_X2FBD2_SHIFT | \ - 20 << SYSCON_CLKSET_PLL_X1FBD1_SHIFT | \ - 1 << SYSCON_CLKSET1_PCLK_DIV_SHIFT | \ - 2 << SYSCON_CLKSET1_HCLK_DIV_SHIFT | \ - SYSCON_CLKSET1_NBYP1 | \ - 1 << SYSCON_CLKSET1_FCLK_DIV_SHIFT) -#else -#error "Undefined board" -#endif - -/* - * usb_div: 4, nbyp2: 1, pll2_en: 1 - * pll2_x1: 368640000.000000, pll2_x2ip: 15360000.000000, - * pll2_x2: 384000000.000000, pll2_out: 192000000.000000 - */ -#define CLKSET2_VAL (23 << SYSCON_CLKSET_PLL_X2IPD_SHIFT | \ - 24 << SYSCON_CLKSET_PLL_X2FBD2_SHIFT | \ - 24 << SYSCON_CLKSET_PLL_X1FBD1_SHIFT | \ - 1 << SYSCON_CLKSET_PLL_PS_SHIFT | \ - SYSCON_CLKSET2_PLL2_EN | \ - SYSCON_CLKSET2_NBYP2 | \ - 3 << SYSCON_CLKSET2_USB_DIV_SHIFT) diff --git a/board/edb93xx/sdram_cfg.c b/board/edb93xx/sdram_cfg.c deleted file mode 100644 index 440ad11..0000000 --- a/board/edb93xx/sdram_cfg.c +++ /dev/null @@ -1,146 +0,0 @@ -/* - * Copyright (C) 2009, 2010 Matthias Kaehlcke <matthias@kaehlcke.net> - * - * Copyright (C) 2006 Dominic Rath <Dominic.Rath@gmx.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 <asm/io.h> -#include "sdram_cfg.h" -#include "early_udelay.h" - -#define PROGRAM_MODE_REG(bank) (*(volatile uint32_t *) \ - (SDRAM_BASE_ADDR | SDRAM_BANK_SEL_##bank | SDRAM_MODE_REG_VAL)) - -#define PRECHARGE_BANK(bank) (*(volatile uint32_t *) \ - (SDRAM_BASE_ADDR | SDRAM_BANK_SEL_##bank)) = 0 - -static void precharge_all_banks(void); -static void setup_refresh_timer(void); -static void program_mode_registers(void); - -void sdram_cfg(void) -{ - struct sdram_regs *sdram = (struct sdram_regs *)SDRAM_BASE; - - writel(SDRAM_DEVCFG_VAL, &sdram->SDRAM_DEVCFG_REG); - - /* Issue continous NOP commands */ - writel(GLCONFIG_INIT | GLCONFIG_MRS | GLCONFIG_CKE, &sdram->glconfig); - - early_udelay(200); - - precharge_all_banks(); - - setup_refresh_timer(); - - program_mode_registers(); - - /* Select normal operation mode */ - writel(GLCONFIG_CKE, &sdram->glconfig); -} - -static void precharge_all_banks(void) -{ - struct sdram_regs *sdram = (struct sdram_regs *)SDRAM_BASE; - - /* Issue PRECHARGE ALL commands */ - writel(GLCONFIG_INIT | GLCONFIG_CKE, &sdram->glconfig); - - /* - * Errata of most EP93xx revisions say that PRECHARGE ALL isn't always - * issued - * - * Cirrus proposes a workaround which consists in performing a read from - * each bank to force the precharge. This causes some boards to hang. - * Writing to the SDRAM banks instead of reading has the same - * side-effect (the SDRAM controller issues the necessary precharges), - * but is known to work on all supported boards - */ - - PRECHARGE_BANK(0); - -#if (CONFIG_NR_DRAM_BANKS >= 2) - PRECHARGE_BANK(1); -#endif - -#if (CONFIG_NR_DRAM_BANKS >= 3) - PRECHARGE_BANK(2); -#endif - -#if (CONFIG_NR_DRAM_BANKS == 4) - PRECHARGE_BANK(3); -#endif -} - -static void setup_refresh_timer(void) -{ - struct sdram_regs *sdram = (struct sdram_regs *)SDRAM_BASE; - - /* Load refresh timer with 10 to issue refresh every 10 cycles */ - writel(0x0a, &sdram->refrshtimr); - - /* - * Wait at least 80 clock cycles to provide 8 refresh cycles - * to all SDRAMs - */ - early_udelay(1); - - /* - * Program refresh timer with normal value - * We need 8192 refresh cycles every 64ms - * at 15ns (HCLK >= 66MHz) per cycle: - * 64ms / 8192 = 7.8125us - * 7.8125us / 15ns = 520 (0x208) - */ - /* - * TODO: redboot uses 0x1e0 for the slowest possible device - * but i don't understand how this value is calculated - */ - writel(0x208, &sdram->refrshtimr); -} - -static void program_mode_registers(void) -{ - struct sdram_regs *sdram = (struct sdram_regs *)SDRAM_BASE; - - /* Select mode register update mode */ - writel(GLCONFIG_MRS | GLCONFIG_CKE, &sdram->glconfig); - - /* - * The mode registers are programmed by performing a read from each - * SDRAM bank. The value of the address that is read defines the value - * that is written into the mode register - */ - - PROGRAM_MODE_REG(0); - -#if (CONFIG_NR_DRAM_BANKS >= 2) - PROGRAM_MODE_REG(1); -#endif - -#if (CONFIG_NR_DRAM_BANKS >= 3) - PROGRAM_MODE_REG(2); -#endif - -#if (CONFIG_NR_DRAM_BANKS == 4) - PROGRAM_MODE_REG(3); -#endif -} diff --git a/board/edb93xx/sdram_cfg.h b/board/edb93xx/sdram_cfg.h deleted file mode 100644 index 757b63c..0000000 --- a/board/edb93xx/sdram_cfg.h +++ /dev/null @@ -1,144 +0,0 @@ -/* - * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net> - * - * Copyright (C) 2006 Dominic Rath <Dominic.Rath@gmx.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 <config.h> -#include <asm/arch/ep93xx.h> - -#define SDRAM_BASE_ADDR PHYS_SDRAM_1 - -#ifdef CONFIG_EDB93XX_SDCS0 -#define SDRAM_DEVCFG_REG devcfg0 -#elif defined(CONFIG_EDB93XX_SDCS3) -#define SDRAM_DEVCFG_REG devcfg3 -#else -#error "SDRAM bank configuration" -#endif - -#if defined(CONFIG_EDB9301) || defined(CONFIG_EDB9302) || \ - defined(CONFIG_EDB9302A) -/* - * 1x Samsung K4S561632C-TC/L75 4M x 16bit x 4 banks SDRAM - * - * CLK cycle time min: - * @ CAS latency = 3: 7.5ns - * @ CAS latency = 2: 10ns - * We're running at 66MHz (15ns cycle time) external bus speed (HCLK), - * so it's safe to use CAS latency = 2 - * - * RAS-to-CAS delay min: - * 20ns - * At 15ns cycle time, we use RAS-to-CAS delay = 2 - * - * SROMLL = 1: Swap BA[1:0] with A[13:12], making the SDRAM appear - * as four blocks of 8MB size, instead of eight blocks of 4MB size: - * - * EDB9301/EDB9302: - * - * 0x00000000 - 0x007fffff - * 0x01000000 - 0x017fffff - * 0x04000000 - 0x047fffff - * 0x05000000 - 0x057fffff - * - * - * EDB9302a: - * - * 0xc0000000 - 0xc07fffff - * 0xc1000000 - 0xc17fffff - * 0xc4000000 - 0xc47fffff - * 0xc5000000 - 0xc57fffff - * - * BANKCOUNT = 1: This is a device with four banks - */ - -#define SDRAM_DEVCFG_VAL (SDRAM_DEVCFG_BANKCOUNT | \ - SDRAM_DEVCFG_SROMLL | \ - SDRAM_DEVCFG_CASLAT_2 | \ - SDRAM_DEVCFG_RASTOCAS_2 | \ - SDRAM_DEVCFG_EXTBUSWIDTH) - -/* - * 16 bit ext. bus - * - * A[22:09] is output as SYA[13:0] - * CAS latency: 2 - * Burst type: sequential - * Burst length: 8 (required for 16 bit ext. bus) - * SYA[13:0] = 0x0023 - */ -#define SDRAM_MODE_REG_VAL 0x4600 - -#define SDRAM_BANK_SEL_0 0x00000000 /* A[22:21] = b00 */ -#define SDRAM_BANK_SEL_1 0x00200000 /* A[22:21] = b01 */ -#define SDRAM_BANK_SEL_2 0x00400000 /* A[22:21] = b10 */ -#define SDRAM_BANK_SEL_3 0x00600000 /* A[22:21] = b11 */ - -#elif defined(CONFIG_EDB9307) || defined(CONFIG_EDB9307A) || \ - defined CONFIG_EDB9312 || defined(CONFIG_EDB9315) || \ - defined(CONFIG_EDB9315A) -/* - * 2x Samsung K4S561632C-TC/L75 4M x 16bit x 4 banks SDRAM - * - * CLK cycle time min: - * @ CAS latency = 3: 7.5ns - * @ CAS latency = 2: 10ns - * We're running at 100MHz (10ns cycle time) external bus speed (HCLK), - * so it's safe to use CAS latency = 2 - * - * RAS-to-CAS delay min: - * 20ns - * At 10ns cycle time, we use RAS-to-CAS delay = 2 - * - * EDB9307, EDB9312, EDB9315: - * - * 0x00000000 - 0x01ffffff - * 0x04000000 - 0x05ffffff - * - * - * EDB9307a, EDB9315a: - * - * 0xc0000000 - 0xc1ffffff - * 0xc4000000 - 0xc5ffffff - */ - -#define SDRAM_DEVCFG_VAL (SDRAM_DEVCFG_BANKCOUNT | \ - SDRAM_DEVCFG_SROMLL | \ - SDRAM_DEVCFG_CASLAT_2 | \ - SDRAM_DEVCFG_RASTOCAS_2) - -/* - * 32 bit ext. bus - * - * A[23:10] is output as SYA[13:0] - * CAS latency: 2 - * Burst type: sequential - * Burst length: 4 - * SYA[13:0] = 0x0022 - */ -#define SDRAM_MODE_REG_VAL 0x8800 - -#define SDRAM_BANK_SEL_0 0x00000000 /* A[23:22] = b00 */ -#define SDRAM_BANK_SEL_1 0x00400000 /* A[23:22] = b01 */ -#define SDRAM_BANK_SEL_2 0x00800000 /* A[23:22] = b10 */ -#define SDRAM_BANK_SEL_3 0x00c00000 /* A[23:22] = b11 */ -#endif |