board/freescale/mpc8349emds/mpc8349emds.c - filogic/uboot - Gitiles

 /*
  * (C) Copyright 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 <common.h>
 #include <ioports.h>
 #include <mpc83xx.h>
 #include <asm/mpc8349_pci.h>
 #include <i2c.h>
 #include <spi.h>
 #include <miiphy.h>
 #include <spd_sdram.h>

 #if defined(CONFIG_OF_LIBFDT)
 #include <libfdt.h>
 #endif

 int fixed_sdram(void);
 void sdram_init(void);

 #if defined(CONFIG_DDR_ECC) && defined(CONFIG_MPC83XX)
 void ddr_enable_ecc(unsigned int dram_size);
 #endif

 int board_early_init_f (void)
 {
 	volatile u8* bcsr = (volatile u8*)CFG_BCSR;

 	/* Enable flash write */
 	bcsr[1] &= ~0x01;

 #ifdef CFG_USE_MPC834XSYS_USB_PHY
 	/* Use USB PHY on SYS board */
 	bcsr[5] |= 0x02;
 #endif

 	return 0;
 }

 #define ns2clk(ns) (ns / (1000000000 / CONFIG_8349_CLKIN) + 1)

 phys_size_t initdram (int board_type)
 {
 	volatile immap_t *im = (immap_t *)CFG_IMMR;
 	u32 msize = 0;

 	if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
 		return -1;

 	/* DDR SDRAM - Main SODIMM */
 	im->sysconf.ddrlaw[0].bar = CFG_DDR_BASE & LAWBAR_BAR;
 #if defined(CONFIG_SPD_EEPROM)
 	msize = spd_sdram();
 #else
 	msize = fixed_sdram();
 #endif
 	/*
 	 * Initialize SDRAM if it is on local bus.
 	 */
 	sdram_init();

 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
 	/*
 	 * Initialize and enable DDR ECC.
 	 */
 	ddr_enable_ecc(msize * 1024 * 1024);
 #endif

 	/* return total bus SDRAM size(bytes)  -- DDR */
 	return (msize * 1024 * 1024);
 }

 #if !defined(CONFIG_SPD_EEPROM)
 /*************************************************************************
  *  fixed sdram init -- doesn't use serial presence detect.
  ************************************************************************/
 int fixed_sdram(void)
 {
 	volatile immap_t *im = (immap_t *)CFG_IMMR;
 	u32 msize = 0;
 	u32 ddr_size;
 	u32 ddr_size_log2;

 	msize = CFG_DDR_SIZE;
 	for (ddr_size = msize << 20, ddr_size_log2 = 0;
 	     (ddr_size > 1);
 	     ddr_size = ddr_size>>1, ddr_size_log2++) {
 		if (ddr_size & 1) {
 			return -1;
 		}
 	}
 	im->sysconf.ddrlaw[0].bar = ((CFG_DDR_SDRAM_BASE>>12) & 0xfffff);
 	im->sysconf.ddrlaw[0].ar = LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE);

 #if (CFG_DDR_SIZE != 256)
 #warning Currenly any ddr size other than 256 is not supported
 #endif
 #ifdef CONFIG_DDR_II
 	im->ddr.csbnds[2].csbnds = CFG_DDR_CS2_BNDS;
 	im->ddr.cs_config[2] = CFG_DDR_CS2_CONFIG;
 	im->ddr.timing_cfg_0 = CFG_DDR_TIMING_0;
 	im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1;
 	im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2;
 	im->ddr.timing_cfg_3 = CFG_DDR_TIMING_3;
 	im->ddr.sdram_cfg = CFG_DDR_SDRAM_CFG;
 	im->ddr.sdram_cfg2 = CFG_DDR_SDRAM_CFG2;
 	im->ddr.sdram_mode = CFG_DDR_MODE;
 	im->ddr.sdram_mode2 = CFG_DDR_MODE2;
 	im->ddr.sdram_interval = CFG_DDR_INTERVAL;
 	im->ddr.sdram_clk_cntl = CFG_DDR_CLK_CNTL;
 #else
 	im->ddr.csbnds[2].csbnds = 0x0000000f;
 	im->ddr.cs_config[2] = CFG_DDR_CONFIG;

 	/* currently we use only one CS, so disable the other banks */
 	im->ddr.cs_config[0] = 0;
 	im->ddr.cs_config[1] = 0;
 	im->ddr.cs_config[3] = 0;

 	im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1;
 	im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2;

 	im->ddr.sdram_cfg =
 		SDRAM_CFG_SREN
 #if defined(CONFIG_DDR_2T_TIMING)
 		| SDRAM_CFG_2T_EN
 #endif
 		| 2 << SDRAM_CFG_SDRAM_TYPE_SHIFT;
 #if defined (CONFIG_DDR_32BIT)
 	/* for 32-bit mode burst length is 8 */
 	im->ddr.sdram_cfg |= (SDRAM_CFG_32_BE | SDRAM_CFG_8_BE);
 #endif
 	im->ddr.sdram_mode = CFG_DDR_MODE;

 	im->ddr.sdram_interval = CFG_DDR_INTERVAL;
 #endif
 	udelay(200);

 	/* enable DDR controller */
 	im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
 	return msize;
 }
 #endif/*!CFG_SPD_EEPROM*/


 int checkboard (void)
 {
 	/*
 	 * Warning: do not read the BCSR registers here
 	 *
 	 * There is a timing bug in the 8349E and 8349EA BCSR code
 	 * version 1.2 (read from BCSR 11) that will cause the CFI
 	 * flash initialization code to overwrite BCSR 0, disabling
 	 * the serial ports and gigabit ethernet
 	 */

 	puts("Board: Freescale MPC8349EMDS\n");
 	return 0;
 }

 /*
  * if MPC8349EMDS is soldered with SDRAM
  */
 #if defined(CFG_BR2_PRELIM)  \
 	&& defined(CFG_OR2_PRELIM) \
 	&& defined(CFG_LBLAWBAR2_PRELIM) \
 	&& defined(CFG_LBLAWAR2_PRELIM)
 /*
  * Initialize SDRAM memory on the Local Bus.
  */

 void sdram_init(void)
 {
 	volatile immap_t *immap = (immap_t *)CFG_IMMR;
 	volatile lbus83xx_t *lbc= &immap->lbus;
 	uint *sdram_addr = (uint *)CFG_LBC_SDRAM_BASE;

 	/*
 	 * Setup SDRAM Base and Option Registers, already done in cpu_init.c
 	 */

 	/* setup mtrpt, lsrt and lbcr for LB bus */
 	lbc->lbcr = CFG_LBC_LBCR;
 	lbc->mrtpr = CFG_LBC_MRTPR;
 	lbc->lsrt = CFG_LBC_LSRT;
 	asm("sync");

 	/*
 	 * Configure the SDRAM controller Machine Mode Register.
 	 */
 	lbc->lsdmr = CFG_LBC_LSDMR_5; /* 0x40636733; normal operation */

 	lbc->lsdmr = CFG_LBC_LSDMR_1; /* 0x68636733; precharge all the banks */
 	asm("sync");
 	*sdram_addr = 0xff;
 	udelay(100);

 	lbc->lsdmr = CFG_LBC_LSDMR_2; /* 0x48636733; auto refresh */
 	asm("sync");
 	/*1 times*/
 	*sdram_addr = 0xff;
 	udelay(100);
 	/*2 times*/
 	*sdram_addr = 0xff;
 	udelay(100);
 	/*3 times*/
 	*sdram_addr = 0xff;
 	udelay(100);
 	/*4 times*/
 	*sdram_addr = 0xff;
 	udelay(100);
 	/*5 times*/
 	*sdram_addr = 0xff;
 	udelay(100);
 	/*6 times*/
 	*sdram_addr = 0xff;
 	udelay(100);
 	/*7 times*/
 	*sdram_addr = 0xff;
 	udelay(100);
 	/*8 times*/
 	*sdram_addr = 0xff;
 	udelay(100);

 	/* 0x58636733; mode register write operation */
 	lbc->lsdmr = CFG_LBC_LSDMR_4;
 	asm("sync");
 	*sdram_addr = 0xff;
 	udelay(100);

 	lbc->lsdmr = CFG_LBC_LSDMR_5; /* 0x40636733; normal operation */
 	asm("sync");
 	*sdram_addr = 0xff;
 	udelay(100);
 }
 #else
 void sdram_init(void)
 {
 }
 #endif

 /*
  * The following are used to control the SPI chip selects for the SPI command.
  */
 #ifdef CONFIG_MPC8XXX_SPI

 #define SPI_CS_MASK	0x80000000

 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
 {
 	return bus == 0 && cs == 0;
 }

 void spi_cs_activate(struct spi_slave *slave)
 {
 	volatile gpio83xx_t *iopd = &((immap_t *)CFG_IMMR)->gpio[0];

 	iopd->dat &= ~SPI_CS_MASK;
 }

 void spi_cs_deactivate(struct spi_slave *slave)
 {
 	volatile gpio83xx_t *iopd = &((immap_t *)CFG_IMMR)->gpio[0];

 	iopd->dat |=  SPI_CS_MASK;
 }
 #endif /* CONFIG_HARD_SPI */

 #if defined(CONFIG_OF_BOARD_SETUP)
 void ft_board_setup(void *blob, bd_t *bd)
 {
 	ft_cpu_setup(blob, bd);
 #ifdef CONFIG_PCI
 	ft_pci_setup(blob, bd);
 #endif
 }
 #endif
	/*
	* (C) Copyright 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 <common.h>
	#include <ioports.h>
	#include <mpc83xx.h>
	#include <asm/mpc8349_pci.h>
	#include <i2c.h>
	#include <spi.h>
	#include <miiphy.h>
	#include <spd_sdram.h>

	#if defined(CONFIG_OF_LIBFDT)
	#include <libfdt.h>
	#endif

	int fixed_sdram(void);
	void sdram_init(void);

	#if defined(CONFIG_DDR_ECC) && defined(CONFIG_MPC83XX)
	void ddr_enable_ecc(unsigned int dram_size);
	#endif

	int board_early_init_f (void)
	{
	volatile u8* bcsr = (volatile u8*)CFG_BCSR;

	/* Enable flash write */
	bcsr[1] &= ~0x01;

	#ifdef CFG_USE_MPC834XSYS_USB_PHY
	/* Use USB PHY on SYS board */
	bcsr[5] \|= 0x02;
	#endif

	return 0;
	}

	#define ns2clk(ns) (ns / (1000000000 / CONFIG_8349_CLKIN) + 1)

	phys_size_t initdram (int board_type)
	{
	volatile immap_t im = (immap_t )CFG_IMMR;
	u32 msize = 0;

	if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
	return -1;

	/* DDR SDRAM - Main SODIMM */
	im->sysconf.ddrlaw[0].bar = CFG_DDR_BASE & LAWBAR_BAR;
	#if defined(CONFIG_SPD_EEPROM)
	msize = spd_sdram();
	#else
	msize = fixed_sdram();
	#endif
	/*
	* Initialize SDRAM if it is on local bus.
	*/
	sdram_init();

	#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
	/*
	* Initialize and enable DDR ECC.
	*/
	ddr_enable_ecc(msize * 1024 * 1024);
	#endif

	/* return total bus SDRAM size(bytes) -- DDR */
	return (msize * 1024 * 1024);
	}

	#if !defined(CONFIG_SPD_EEPROM)
	/*************************************************************************
	* fixed sdram init -- doesn't use serial presence detect.
	************************************************************************/
	int fixed_sdram(void)
	{
	volatile immap_t im = (immap_t )CFG_IMMR;
	u32 msize = 0;
	u32 ddr_size;
	u32 ddr_size_log2;

	msize = CFG_DDR_SIZE;
	for (ddr_size = msize << 20, ddr_size_log2 = 0;
	(ddr_size > 1);
	ddr_size = ddr_size>>1, ddr_size_log2++) {
	if (ddr_size & 1) {
	return -1;
	}
	}
	im->sysconf.ddrlaw[0].bar = ((CFG_DDR_SDRAM_BASE>>12) & 0xfffff);
	im->sysconf.ddrlaw[0].ar = LAWAR_EN \| ((ddr_size_log2 - 1) & LAWAR_SIZE);

	#if (CFG_DDR_SIZE != 256)
	#warning Currenly any ddr size other than 256 is not supported
	#endif
	#ifdef CONFIG_DDR_II
	im->ddr.csbnds[2].csbnds = CFG_DDR_CS2_BNDS;
	im->ddr.cs_config[2] = CFG_DDR_CS2_CONFIG;
	im->ddr.timing_cfg_0 = CFG_DDR_TIMING_0;
	im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1;
	im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2;
	im->ddr.timing_cfg_3 = CFG_DDR_TIMING_3;
	im->ddr.sdram_cfg = CFG_DDR_SDRAM_CFG;
	im->ddr.sdram_cfg2 = CFG_DDR_SDRAM_CFG2;
	im->ddr.sdram_mode = CFG_DDR_MODE;
	im->ddr.sdram_mode2 = CFG_DDR_MODE2;
	im->ddr.sdram_interval = CFG_DDR_INTERVAL;
	im->ddr.sdram_clk_cntl = CFG_DDR_CLK_CNTL;
	#else
	im->ddr.csbnds[2].csbnds = 0x0000000f;
	im->ddr.cs_config[2] = CFG_DDR_CONFIG;

	/* currently we use only one CS, so disable the other banks */
	im->ddr.cs_config[0] = 0;
	im->ddr.cs_config[1] = 0;
	im->ddr.cs_config[3] = 0;

	im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1;
	im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2;

	im->ddr.sdram_cfg =
	SDRAM_CFG_SREN
	#if defined(CONFIG_DDR_2T_TIMING)
	\| SDRAM_CFG_2T_EN
	#endif
	\| 2 << SDRAM_CFG_SDRAM_TYPE_SHIFT;
	#if defined (CONFIG_DDR_32BIT)
	/* for 32-bit mode burst length is 8 */
	im->ddr.sdram_cfg \|= (SDRAM_CFG_32_BE \| SDRAM_CFG_8_BE);
	#endif
	im->ddr.sdram_mode = CFG_DDR_MODE;

	im->ddr.sdram_interval = CFG_DDR_INTERVAL;
	#endif
	udelay(200);

	/* enable DDR controller */
	im->ddr.sdram_cfg \|= SDRAM_CFG_MEM_EN;
	return msize;
	}
	#endif/!CFG_SPD_EEPROM/


	int checkboard (void)
	{
	/*
	* Warning: do not read the BCSR registers here
	*
	* There is a timing bug in the 8349E and 8349EA BCSR code
	* version 1.2 (read from BCSR 11) that will cause the CFI
	* flash initialization code to overwrite BCSR 0, disabling
	* the serial ports and gigabit ethernet
	*/

	puts("Board: Freescale MPC8349EMDS\n");
	return 0;
	}

	/*
	* if MPC8349EMDS is soldered with SDRAM
	*/
	#if defined(CFG_BR2_PRELIM) \
	&& defined(CFG_OR2_PRELIM) \
	&& defined(CFG_LBLAWBAR2_PRELIM) \
	&& defined(CFG_LBLAWAR2_PRELIM)
	/*
	* Initialize SDRAM memory on the Local Bus.
	*/

	void sdram_init(void)
	{
	volatile immap_t immap = (immap_t )CFG_IMMR;
	volatile lbus83xx_t *lbc= &immap->lbus;
	uint sdram_addr = (uint )CFG_LBC_SDRAM_BASE;

	/*
	* Setup SDRAM Base and Option Registers, already done in cpu_init.c
	*/

	/* setup mtrpt, lsrt and lbcr for LB bus */
	lbc->lbcr = CFG_LBC_LBCR;
	lbc->mrtpr = CFG_LBC_MRTPR;
	lbc->lsrt = CFG_LBC_LSRT;
	asm("sync");

	/*
	* Configure the SDRAM controller Machine Mode Register.
	*/
	lbc->lsdmr = CFG_LBC_LSDMR_5; /* 0x40636733; normal operation */

	lbc->lsdmr = CFG_LBC_LSDMR_1; /* 0x68636733; precharge all the banks */
	asm("sync");
	*sdram_addr = 0xff;
	udelay(100);

	lbc->lsdmr = CFG_LBC_LSDMR_2; /* 0x48636733; auto refresh */
	asm("sync");
	/1 times/
	*sdram_addr = 0xff;
	udelay(100);
	/2 times/
	*sdram_addr = 0xff;
	udelay(100);
	/3 times/
	*sdram_addr = 0xff;
	udelay(100);
	/4 times/
	*sdram_addr = 0xff;
	udelay(100);
	/5 times/
	*sdram_addr = 0xff;
	udelay(100);
	/6 times/
	*sdram_addr = 0xff;
	udelay(100);
	/7 times/
	*sdram_addr = 0xff;
	udelay(100);
	/8 times/
	*sdram_addr = 0xff;
	udelay(100);

	/* 0x58636733; mode register write operation */
	lbc->lsdmr = CFG_LBC_LSDMR_4;
	asm("sync");
	*sdram_addr = 0xff;
	udelay(100);

	lbc->lsdmr = CFG_LBC_LSDMR_5; /* 0x40636733; normal operation */
	asm("sync");
	*sdram_addr = 0xff;
	udelay(100);
	}
	#else
	void sdram_init(void)
	{
	}
	#endif

	/*
	* The following are used to control the SPI chip selects for the SPI command.
	*/
	#ifdef CONFIG_MPC8XXX_SPI

	#define SPI_CS_MASK 0x80000000

	int spi_cs_is_valid(unsigned int bus, unsigned int cs)
	{
	return bus == 0 && cs == 0;
	}

	void spi_cs_activate(struct spi_slave *slave)
	{
	volatile gpio83xx_t iopd = &((immap_t )CFG_IMMR)->gpio[0];

	iopd->dat &= ~SPI_CS_MASK;
	}

	void spi_cs_deactivate(struct spi_slave *slave)
	{
	volatile gpio83xx_t iopd = &((immap_t )CFG_IMMR)->gpio[0];

	iopd->dat \|= SPI_CS_MASK;
	}
	#endif /* CONFIG_HARD_SPI */

	#if defined(CONFIG_OF_BOARD_SETUP)
	void ft_board_setup(void blob, bd_t bd)
	{
	ft_cpu_setup(blob, bd);
	#ifdef CONFIG_PCI
	ft_pci_setup(blob, bd);
	#endif
	}
	#endif