mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-19 19:28:36 +00:00
5ed3e8659e
Add common clock, memory and low level code Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
284 lines
8.2 KiB
C
284 lines
8.2 KiB
C
/*
|
|
* (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;
|
|
|
|
#if defined(CONFIG_CMD_NAND)
|
|
static 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
|
|
};
|
|
|
|
gpmc_csx_t *nand_cs_base;
|
|
gpmc_t *gpmc_cfg_base;
|
|
|
|
#if defined(CONFIG_ENV_IS_IN_NAND)
|
|
#define GPMC_CS 0
|
|
#else
|
|
#define GPMC_CS 1
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#if defined(CONFIG_CMD_ONENAND)
|
|
static 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
|
|
};
|
|
|
|
gpmc_csx_t *onenand_cs_base;
|
|
|
|
#if defined(CONFIG_ENV_IS_IN_ONENAND)
|
|
#define GPMC_CS 0
|
|
#else
|
|
#define GPMC_CS 1
|
|
#endif
|
|
|
|
#endif
|
|
|
|
static sdrc_t *sdrc_base = (sdrc_t *)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 /= SZ_32M; /* 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)
|
|
{
|
|
sdrc_actim_t *sdrc_actim_base;
|
|
|
|
if(cs)
|
|
sdrc_actim_base = (sdrc_actim_t *)SDRC_ACTIM_CTRL1_BASE;
|
|
else
|
|
sdrc_actim_base = (sdrc_actim_t *)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(SDP_SDRC_SHARING, &sdrc_base->sharing);
|
|
|
|
/* Disable Power Down of CKE cuz of 1 CKE on combo part */
|
|
writel(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_config(u32 *gpmc_config, gpmc_csx_t *gpmc_cs_base, u32 base,
|
|
u32 size)
|
|
{
|
|
writel(0, &gpmc_cs_base->config7);
|
|
sdelay(1000);
|
|
/* Delay for settling */
|
|
writel(gpmc_config[0], &gpmc_cs_base->config1);
|
|
writel(gpmc_config[1], &gpmc_cs_base->config2);
|
|
writel(gpmc_config[2], &gpmc_cs_base->config3);
|
|
writel(gpmc_config[3], &gpmc_cs_base->config4);
|
|
writel(gpmc_config[4], &gpmc_cs_base->config5);
|
|
writel(gpmc_config[5], &gpmc_cs_base->config6);
|
|
/* Enable the config */
|
|
writel((((size & 0xF) << 8) | ((base >> 24) & 0x3F) |
|
|
(1 << 6)), &gpmc_cs_base->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 */
|
|
u32 *gpmc_config = NULL;
|
|
gpmc_t *gpmc_base = (gpmc_t *)GPMC_BASE;
|
|
gpmc_csx_t *gpmc_cs_base = (gpmc_csx_t *)GPMC_CONFIG_CS0_BASE;
|
|
u32 base = 0;
|
|
u32 size = 0;
|
|
u32 f_off = CONFIG_SYS_MONITOR_LEN;
|
|
u32 f_sec = 0;
|
|
u32 config = 0;
|
|
|
|
/* global settings */
|
|
writel(0, &gpmc_base->irqenable); /* isr's sources masked */
|
|
writel(0, &gpmc_base->timeout_control);/* timeout disable */
|
|
|
|
config = readl(&gpmc_base->config);
|
|
config &= (~0xf00);
|
|
writel(config, &gpmc_base->config);
|
|
|
|
/*
|
|
* Disable the GPMC0 config set by ROM code
|
|
* It conflicts with our MPDB (both at 0x08000000)
|
|
*/
|
|
writel(0, &gpmc_cs_base->config7);
|
|
sdelay(1000);
|
|
|
|
#if defined(CONFIG_CMD_NAND) /* CS 0 */
|
|
gpmc_config = gpmc_m_nand;
|
|
gpmc_cfg_base = gpmc_base;
|
|
nand_cs_base = (gpmc_csx_t *)(GPMC_CONFIG_CS0_BASE +
|
|
(GPMC_CS * GPMC_CONFIG_WIDTH));
|
|
base = PISMO1_NAND_BASE;
|
|
size = PISMO1_NAND_SIZE;
|
|
enable_gpmc_config(gpmc_config, nand_cs_base, base, size);
|
|
#if defined(CONFIG_ENV_IS_IN_NAND)
|
|
f_off = SMNAND_ENV_OFFSET;
|
|
f_sec = SZ_128K;
|
|
/* 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;
|
|
onenand_cs_base = (gpmc_csx_t *)(GPMC_CONFIG_CS0_BASE +
|
|
(GPMC_CS * GPMC_CONFIG_WIDTH));
|
|
base = PISMO1_ONEN_BASE;
|
|
size = PISMO1_ONEN_SIZE;
|
|
enable_gpmc_config(gpmc_config, onenand_cs_base, base, size);
|
|
#if defined(CONFIG_ENV_IS_IN_ONENAND)
|
|
f_off = ONENAND_ENV_OFFSET;
|
|
f_sec = SZ_128K;
|
|
/* env setup */
|
|
boot_flash_base = base;
|
|
boot_flash_off = f_off;
|
|
boot_flash_sec = f_sec;
|
|
boot_flash_env_addr = f_off;
|
|
#endif
|
|
#endif
|
|
}
|