diff options
Diffstat (limited to 'cpu/arm_cortexa8/omap3/mem.c')
-rw-r--r-- | cpu/arm_cortexa8/omap3/mem.c | 281 |
1 files changed, 0 insertions, 281 deletions
diff --git a/cpu/arm_cortexa8/omap3/mem.c b/cpu/arm_cortexa8/omap3/mem.c deleted file mode 100644 index dfb7e4c..0000000 --- a/cpu/arm_cortexa8/omap3/mem.c +++ /dev/null @@ -1,281 +0,0 @@ -/* - * (C) Copyright 2008 - * Texas Instruments, <www.ti.com> - * - * Author : - * Manikandan Pillai <mani.pillai@ti.com> - * - * Initial Code from: - * Richard Woodruff <r-woodruff2@ti.com> - * Syed Mohammed Khasim <khasim@ti.com> - * - * 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/mem.h> -#include <asm/arch/sys_proto.h> -#include <command.h> - -/* - * Only One NAND allowed on board at a time. - * The GPMC CS Base for the same - */ -unsigned int boot_flash_base; -unsigned int boot_flash_off; -unsigned int boot_flash_sec; -unsigned int boot_flash_type; -volatile unsigned int boot_flash_env_addr; - -struct gpmc *gpmc_cfg; - -#if defined(CONFIG_CMD_NAND) -static const u32 gpmc_m_nand[GPMC_MAX_REG] = { - M_NAND_GPMC_CONFIG1, - M_NAND_GPMC_CONFIG2, - M_NAND_GPMC_CONFIG3, - M_NAND_GPMC_CONFIG4, - M_NAND_GPMC_CONFIG5, - M_NAND_GPMC_CONFIG6, 0 -}; - -#if defined(CONFIG_ENV_IS_IN_NAND) -#define GPMC_CS 0 -#else -#define GPMC_CS 1 -#endif - -#endif - -#if defined(CONFIG_CMD_ONENAND) -static const u32 gpmc_onenand[GPMC_MAX_REG] = { - ONENAND_GPMC_CONFIG1, - ONENAND_GPMC_CONFIG2, - ONENAND_GPMC_CONFIG3, - ONENAND_GPMC_CONFIG4, - ONENAND_GPMC_CONFIG5, - ONENAND_GPMC_CONFIG6, 0 -}; - -#if defined(CONFIG_ENV_IS_IN_ONENAND) -#define GPMC_CS 0 -#else -#define GPMC_CS 1 -#endif - -#endif - -static struct sdrc *sdrc_base = (struct sdrc *)OMAP34XX_SDRC_BASE; - -/************************************************************************** - * make_cs1_contiguous() - for es2 and above remap cs1 behind cs0 to allow - * command line mem=xyz use all memory with out discontinuous support - * compiled in. Could do it at the ATAG, but there really is two banks... - * Called as part of 2nd phase DDR init. - **************************************************************************/ -void make_cs1_contiguous(void) -{ - u32 size, a_add_low, a_add_high; - - size = get_sdr_cs_size(CS0); - size >>= 25; /* divide by 32 MiB to find size to offset CS1 */ - a_add_high = (size & 3) << 8; /* set up low field */ - a_add_low = (size & 0x3C) >> 2; /* set up high field */ - writel((a_add_high | a_add_low), &sdrc_base->cs_cfg); - -} - -/******************************************************** - * mem_ok() - test used to see if timings are correct - * for a part. Helps in guessing which part - * we are currently using. - *******************************************************/ -u32 mem_ok(u32 cs) -{ - u32 val1, val2, addr; - u32 pattern = 0x12345678; - - addr = OMAP34XX_SDRC_CS0 + get_sdr_cs_offset(cs); - - writel(0x0, addr + 0x400); /* clear pos A */ - writel(pattern, addr); /* pattern to pos B */ - writel(0x0, addr + 4); /* remove pattern off the bus */ - val1 = readl(addr + 0x400); /* get pos A value */ - val2 = readl(addr); /* get val2 */ - - if ((val1 != 0) || (val2 != pattern)) /* see if pos A val changed */ - return 0; - else - return 1; -} - -/******************************************************** - * sdrc_init() - init the sdrc chip selects CS0 and CS1 - * - early init routines, called from flash or - * SRAM. - *******************************************************/ -void sdrc_init(void) -{ - /* only init up first bank here */ - do_sdrc_init(CS0, EARLY_INIT); -} - -/************************************************************************* - * do_sdrc_init(): initialize the SDRAM for use. - * -code sets up SDRAM basic SDRC timings for CS0 - * -optimal settings can be placed here, or redone after i2c - * inspection of board info - * - * - code called once in C-Stack only context for CS0 and a possible 2nd - * time depending on memory configuration from stack+global context - **************************************************************************/ - -void do_sdrc_init(u32 cs, u32 early) -{ - struct sdrc_actim *sdrc_actim_base; - - if(cs) - sdrc_actim_base = (struct sdrc_actim *)SDRC_ACTIM_CTRL1_BASE; - else - sdrc_actim_base = (struct sdrc_actim *)SDRC_ACTIM_CTRL0_BASE; - - if (early) { - /* reset sdrc controller */ - writel(SOFTRESET, &sdrc_base->sysconfig); - wait_on_value(RESETDONE, RESETDONE, &sdrc_base->status, - 12000000); - writel(0, &sdrc_base->sysconfig); - - /* setup sdrc to ball mux */ - writel(SDRC_SHARING, &sdrc_base->sharing); - - /* Disable Power Down of CKE cuz of 1 CKE on combo part */ - writel(WAKEUPPROC | PWDNEN | SRFRONRESET | PAGEPOLICY_HIGH, - &sdrc_base->power); - - writel(ENADLL | DLLPHASE_90, &sdrc_base->dlla_ctrl); - sdelay(0x20000); - } - - writel(RASWIDTH_13BITS | CASWIDTH_10BITS | ADDRMUXLEGACY | - RAMSIZE_128 | BANKALLOCATION | B32NOT16 | B32NOT16 | - DEEPPD | DDR_SDRAM, &sdrc_base->cs[cs].mcfg); - writel(ARCV | ARE_ARCV_1, &sdrc_base->cs[cs].rfr_ctrl); - writel(V_ACTIMA_165, &sdrc_actim_base->ctrla); - writel(V_ACTIMB_165, &sdrc_actim_base->ctrlb); - - writel(CMD_NOP, &sdrc_base ->cs[cs].manual); - writel(CMD_PRECHARGE, &sdrc_base->cs[cs].manual); - writel(CMD_AUTOREFRESH, &sdrc_base->cs[cs].manual); - writel(CMD_AUTOREFRESH, &sdrc_base->cs[cs].manual); - - /* - * CAS latency 3, Write Burst = Read Burst, Serial Mode, - * Burst length = 4 - */ - writel(CASL3 | BURSTLENGTH4, &sdrc_base->cs[cs].mr); - - if (!mem_ok(cs)) - writel(0, &sdrc_base->cs[cs].mcfg); -} - -void enable_gpmc_cs_config(const u32 *gpmc_config, struct gpmc_cs *cs, u32 base, - u32 size) -{ - writel(0, &cs->config7); - sdelay(1000); - /* Delay for settling */ - writel(gpmc_config[0], &cs->config1); - writel(gpmc_config[1], &cs->config2); - writel(gpmc_config[2], &cs->config3); - writel(gpmc_config[3], &cs->config4); - writel(gpmc_config[4], &cs->config5); - writel(gpmc_config[5], &cs->config6); - /* Enable the config */ - writel((((size & 0xF) << 8) | ((base >> 24) & 0x3F) | - (1 << 6)), &cs->config7); - sdelay(2000); -} - -/***************************************************** - * gpmc_init(): init gpmc bus - * Init GPMC for x16, MuxMode (SDRAM in x32). - * This code can only be executed from SRAM or SDRAM. - *****************************************************/ -void gpmc_init(void) -{ - /* putting a blanket check on GPMC based on ZeBu for now */ - gpmc_cfg = (struct gpmc *)GPMC_BASE; -#if defined(CONFIG_CMD_NAND) || defined(CONFIG_CMD_ONENAND) - const u32 *gpmc_config = NULL; - u32 base = 0; - u32 size = 0; -#if defined(CONFIG_ENV_IS_IN_NAND) || defined(CONFIG_ENV_IS_IN_ONENAND) - u32 f_off = CONFIG_SYS_MONITOR_LEN; - u32 f_sec = 0; -#endif -#endif - u32 config = 0; - - /* global settings */ - writel(0, &gpmc_cfg->irqenable); /* isr's sources masked */ - writel(0, &gpmc_cfg->timeout_control);/* timeout disable */ - - config = readl(&gpmc_cfg->config); - config &= (~0xf00); - writel(config, &gpmc_cfg->config); - - /* - * Disable the GPMC0 config set by ROM code - * It conflicts with our MPDB (both at 0x08000000) - */ - writel(0, &gpmc_cfg->cs[0].config7); - sdelay(1000); - -#if defined(CONFIG_CMD_NAND) /* CS 0 */ - gpmc_config = gpmc_m_nand; - - base = PISMO1_NAND_BASE; - size = PISMO1_NAND_SIZE; - enable_gpmc_cs_config(gpmc_config, &gpmc_cfg->cs[0], base, size); -#if defined(CONFIG_ENV_IS_IN_NAND) - f_off = SMNAND_ENV_OFFSET; - f_sec = (128 << 10); /* 128 KiB */ - /* env setup */ - boot_flash_base = base; - boot_flash_off = f_off; - boot_flash_sec = f_sec; - boot_flash_env_addr = f_off; -#endif -#endif - -#if defined(CONFIG_CMD_ONENAND) - gpmc_config = gpmc_onenand; - base = PISMO1_ONEN_BASE; - size = PISMO1_ONEN_SIZE; - enable_gpmc_cs_config(gpmc_config, &gpmc_cfg->cs[0], base, size); -#if defined(CONFIG_ENV_IS_IN_ONENAND) - f_off = ONENAND_ENV_OFFSET; - f_sec = (128 << 10); /* 128 KiB */ - /* env setup */ - boot_flash_base = base; - boot_flash_off = f_off; - boot_flash_sec = f_sec; - boot_flash_env_addr = f_off; -#endif -#endif -} |