board/mpc8540eval/mpc8540eval.c - platform/external/u-boot - Gitiles

 /*
  * (C) Copyright 2002,2003, Motorola Inc.
  * Xianghua Xiao, (X.Xiao@motorola.com)
  *
  * (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.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 <asm/processor.h>
 #include <asm/immap_85xx.h>
 #include <spd.h>

 extern long int spd_sdram (void);

 long int fixed_sdram (void);

 int board_pre_init (void)
 {
 #if defined(CONFIG_PCI)
 	volatile immap_t *immr = (immap_t *)CFG_IMMR;
 	volatile ccsr_pcix_t *pci = &immr->im_pcix;

 	pci->peer &= 0xffffffdf; /* disable master abort */
 #endif
 	return 0;
 }

 int checkboard (void)
 {
 	sys_info_t sysinfo;

 	get_sys_info (&sysinfo);

 	printf ("Board: Freescale MPC8540EVAL Board\n");
 	printf ("\tCPU: %lu MHz\n", sysinfo.freqProcessor / 1000000);
 	printf ("\tCCB: %lu MHz\n", sysinfo.freqSystemBus / 1000000);
 	printf ("\tDDR: %lu MHz\n", sysinfo.freqSystemBus / 2000000);
 	if((CFG_LBC_LCRR & 0x0f) == 2 || (CFG_LBC_LCRR & 0x0f) == 4 \
 		|| (CFG_LBC_LCRR & 0x0f) == 8) {
 		printf ("\tLBC: %lu MHz\n",
 			sysinfo.freqSystemBus / 1000000/(CFG_LBC_LCRR & 0x0f));
 	} else {
 		printf("\tLBC: unknown\n");
 	}
 	printf("L1 D-cache 32KB, L1 I-cache 32KB enabled.\n");
 	return (0);
 }

 long int initdram (int board_type)
 {
 	long dram_size = 0;
 	extern long spd_sdram (void);
 	volatile immap_t *immap = (immap_t *)CFG_IMMR;
 #if !defined(CONFIG_RAM_AS_FLASH)
 	volatile ccsr_lbc_t *lbc= &immap->im_lbc;
 	sys_info_t sysinfo;
 	uint temp_lbcdll = 0;
 #endif
 #if !defined(CONFIG_RAM_AS_FLASH) || defined(CONFIG_DDR_DLL)
 	volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
 #endif

 #if defined(CONFIG_DDR_DLL)
 	uint temp_ddrdll = 0;

 	/* Work around to stabilize DDR DLL */
 	temp_ddrdll = gur->ddrdllcr;
 	gur->ddrdllcr = ((temp_ddrdll & 0xff) << 16) | 0x80000000;
 	asm("sync;isync;msync");
 #endif

 #if defined(CONFIG_SPD_EEPROM)
 	dram_size = spd_sdram ();
 #else
 	dram_size = fixed_sdram ();
 #endif

 #if defined(CFG_RAMBOOT)
 	return dram_size;
 #endif

 #if !defined(CONFIG_RAM_AS_FLASH) /* LocalBus is not emulating flash */
 	get_sys_info(&sysinfo);
 	/* if localbus freq is less than 66Mhz,we use bypass mode,otherwise use DLL */
 	if(sysinfo.freqSystemBus/(CFG_LBC_LCRR & 0x0f) < 66000000) {
 		lbc->lcrr = (CFG_LBC_LCRR & 0x0fffffff)| 0x80000000;
 	} else {
 		lbc->lcrr = CFG_LBC_LCRR & 0x7fffffff;
 		udelay(200);
 		temp_lbcdll = gur->lbcdllcr;
 		gur->lbcdllcr = ((temp_lbcdll & 0xff) << 16 ) | 0x80000000;
 		asm("sync;isync;msync");
 	}
 	lbc->or2 = CFG_OR2_PRELIM; /* 64MB SDRAM */
 	lbc->br2 = CFG_BR2_PRELIM;
 	lbc->lbcr = CFG_LBC_LBCR;
 	lbc->lsdmr = CFG_LBC_LSDMR_1;
 	asm("sync");
 	* (ulong *)0 = 0x000000ff;
 	lbc->lsdmr = CFG_LBC_LSDMR_2;
 	asm("sync");
 	* (ulong *)0 = 0x000000ff;
 	lbc->lsdmr = CFG_LBC_LSDMR_3;
 	asm("sync");
 	* (ulong *)0 = 0x000000ff;
 	lbc->lsdmr = CFG_LBC_LSDMR_4;
 	asm("sync");
 	* (ulong *)0 = 0x000000ff;
 	lbc->lsdmr = CFG_LBC_LSDMR_5;
 	asm("sync");
 	lbc->lsrt = CFG_LBC_LSRT;
 	asm("sync");
 	lbc->mrtpr = CFG_LBC_MRTPR;
 	asm("sync");
 #endif

 #if defined(CONFIG_DDR_ECC)
 	{
 		/* Initialize all of memory for ECC, then
 		 * enable errors */
 		uint *p = 0;
 		uint i = 0;
 		volatile immap_t *immap = (immap_t *)CFG_IMMR;
 		volatile ccsr_ddr_t *ddr= &immap->im_ddr;
 		dma_init();
 		for (*p = 0; p < (uint *)(8 * 1024); p++) {
 			if (((unsigned int)p & 0x1f) == 0) { dcbz(p); }
 			*p = (unsigned int)0xdeadbeef;
 			if (((unsigned int)p & 0x1c) == 0x1c) { dcbf(p); }
 		}

 		/* 8K */
 		dma_xfer((uint *)0x2000,0x2000,(uint *)0);
 		/* 16K */
 		dma_xfer((uint *)0x4000,0x4000,(uint *)0);
 		/* 32K */
 		dma_xfer((uint *)0x8000,0x8000,(uint *)0);
 		/* 64K */
 		dma_xfer((uint *)0x10000,0x10000,(uint *)0);
 		/* 128k */
 		dma_xfer((uint *)0x20000,0x20000,(uint *)0);
 		/* 256k */
 		dma_xfer((uint *)0x40000,0x40000,(uint *)0);
 		/* 512k */
 		dma_xfer((uint *)0x80000,0x80000,(uint *)0);
 		/* 1M */
 		dma_xfer((uint *)0x100000,0x100000,(uint *)0);
 		/* 2M */
 		dma_xfer((uint *)0x200000,0x200000,(uint *)0);
 		/* 4M */
 		dma_xfer((uint *)0x400000,0x400000,(uint *)0);

 		for (i = 1; i < dram_size / 0x800000; i++) {
 			dma_xfer((uint *)(0x800000*i),0x800000,(uint *)0);
 		}

 		/* Enable errors for ECC */
 		ddr->err_disable = 0x00000000;
 		asm("sync;isync;msync");
 	}
 #endif

 	return dram_size;
 }

 #if defined(CFG_DRAM_TEST)
 int testdram (void)
 {
 	uint *pstart = (uint *) CFG_MEMTEST_START;
 	uint *pend = (uint *) CFG_MEMTEST_END;
 	uint *p;

 	printf("SDRAM test phase 1:\n");
 	for (p = pstart; p < pend; p++)
 		*p = 0xaaaaaaaa;

 	for (p = pstart; p < pend; p++) {
 		if (*p != 0xaaaaaaaa) {
 			printf ("SDRAM test fails at: %08x\n", (uint) p);
 			return 1;
 		}
 	}

 	printf("SDRAM test phase 2:\n");
 	for (p = pstart; p < pend; p++)
 		*p = 0x55555555;

 	for (p = pstart; p < pend; p++) {
 		if (*p != 0x55555555) {
 			printf ("SDRAM test fails at: %08x\n", (uint) p);
 			return 1;
 		}
 	}

 	printf("SDRAM test passed.\n");
 	return 0;
 }
 #endif

 #if !defined(CONFIG_SPD_EEPROM)
 /*************************************************************************
  *  fixed sdram init -- doesn't use serial presence detect.
  ************************************************************************/
 long int fixed_sdram (void)
 {
 #ifndef CFG_RAMBOOT
 	volatile immap_t *immap = (immap_t *)CFG_IMMR;
 	volatile ccsr_ddr_t *ddr= &immap->im_ddr;

 	ddr->cs0_bnds = CFG_DDR_CS0_BNDS;
 	ddr->cs0_config = CFG_DDR_CS0_CONFIG;
 	ddr->timing_cfg_1 = CFG_DDR_TIMING_1;
 	ddr->timing_cfg_2 = CFG_DDR_TIMING_2;
 	ddr->sdram_mode = CFG_DDR_MODE;
 	ddr->sdram_interval = CFG_DDR_INTERVAL;
 #if defined (CONFIG_DDR_ECC)
 	ddr->err_disable = 0x0000000D;
 	ddr->err_sbe = 0x00ff0000;
 #endif
 	asm("sync;isync;msync");
 	udelay(500);
 #if defined (CONFIG_DDR_ECC)
 	/* Enable ECC checking */
 	ddr->sdram_cfg = (CFG_DDR_CONTROL | 0x20000000);
 #else
 	ddr->sdram_cfg = CFG_DDR_CONTROL;
 #endif
 	asm("sync; isync; msync");
 	udelay(500);
 #endif
 	return (CFG_SDRAM_SIZE * 1024 * 1024);
 }
 #endif	/* !defined(CONFIG_SPD_EEPROM) */
	/*
	* (C) Copyright 2002,2003, Motorola Inc.
	* Xianghua Xiao, (X.Xiao@motorola.com)
	*
	* (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.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 <asm/processor.h>
	#include <asm/immap_85xx.h>
	#include <spd.h>

	extern long int spd_sdram (void);

	long int fixed_sdram (void);

	int board_pre_init (void)
	{
	#if defined(CONFIG_PCI)
	volatile immap_t immr = (immap_t )CFG_IMMR;
	volatile ccsr_pcix_t *pci = &immr->im_pcix;

	pci->peer &= 0xffffffdf; /* disable master abort */
	#endif
	return 0;
	}

	int checkboard (void)
	{
	sys_info_t sysinfo;

	get_sys_info (&sysinfo);

	printf ("Board: Freescale MPC8540EVAL Board\n");
	printf ("\tCPU: %lu MHz\n", sysinfo.freqProcessor / 1000000);
	printf ("\tCCB: %lu MHz\n", sysinfo.freqSystemBus / 1000000);
	printf ("\tDDR: %lu MHz\n", sysinfo.freqSystemBus / 2000000);
	if((CFG_LBC_LCRR & 0x0f) == 2 \|\| (CFG_LBC_LCRR & 0x0f) == 4 \
	\|\| (CFG_LBC_LCRR & 0x0f) == 8) {
	printf ("\tLBC: %lu MHz\n",
	sysinfo.freqSystemBus / 1000000/(CFG_LBC_LCRR & 0x0f));
	} else {
	printf("\tLBC: unknown\n");
	}
	printf("L1 D-cache 32KB, L1 I-cache 32KB enabled.\n");
	return (0);
	}

	long int initdram (int board_type)
	{
	long dram_size = 0;
	extern long spd_sdram (void);
	volatile immap_t immap = (immap_t )CFG_IMMR;
	#if !defined(CONFIG_RAM_AS_FLASH)
	volatile ccsr_lbc_t *lbc= &immap->im_lbc;
	sys_info_t sysinfo;
	uint temp_lbcdll = 0;
	#endif
	#if !defined(CONFIG_RAM_AS_FLASH) \|\| defined(CONFIG_DDR_DLL)
	volatile ccsr_gur_t gur = (void )(CFG_MPC85xx_GUTS_ADDR);
	#endif

	#if defined(CONFIG_DDR_DLL)
	uint temp_ddrdll = 0;

	/* Work around to stabilize DDR DLL */
	temp_ddrdll = gur->ddrdllcr;
	gur->ddrdllcr = ((temp_ddrdll & 0xff) << 16) \| 0x80000000;
	asm("sync;isync;msync");
	#endif

	#if defined(CONFIG_SPD_EEPROM)
	dram_size = spd_sdram ();
	#else
	dram_size = fixed_sdram ();
	#endif

	#if defined(CFG_RAMBOOT)
	return dram_size;
	#endif

	#if !defined(CONFIG_RAM_AS_FLASH) /* LocalBus is not emulating flash */
	get_sys_info(&sysinfo);
	/* if localbus freq is less than 66Mhz,we use bypass mode,otherwise use DLL */
	if(sysinfo.freqSystemBus/(CFG_LBC_LCRR & 0x0f) < 66000000) {
	lbc->lcrr = (CFG_LBC_LCRR & 0x0fffffff)\| 0x80000000;
	} else {
	lbc->lcrr = CFG_LBC_LCRR & 0x7fffffff;
	udelay(200);
	temp_lbcdll = gur->lbcdllcr;
	gur->lbcdllcr = ((temp_lbcdll & 0xff) << 16 ) \| 0x80000000;
	asm("sync;isync;msync");
	}
	lbc->or2 = CFG_OR2_PRELIM; /* 64MB SDRAM */
	lbc->br2 = CFG_BR2_PRELIM;
	lbc->lbcr = CFG_LBC_LBCR;
	lbc->lsdmr = CFG_LBC_LSDMR_1;
	asm("sync");
	* (ulong *)0 = 0x000000ff;
	lbc->lsdmr = CFG_LBC_LSDMR_2;
	asm("sync");
	* (ulong *)0 = 0x000000ff;
	lbc->lsdmr = CFG_LBC_LSDMR_3;
	asm("sync");
	* (ulong *)0 = 0x000000ff;
	lbc->lsdmr = CFG_LBC_LSDMR_4;
	asm("sync");
	* (ulong *)0 = 0x000000ff;
	lbc->lsdmr = CFG_LBC_LSDMR_5;
	asm("sync");
	lbc->lsrt = CFG_LBC_LSRT;
	asm("sync");
	lbc->mrtpr = CFG_LBC_MRTPR;
	asm("sync");
	#endif

	#if defined(CONFIG_DDR_ECC)
	{
	/* Initialize all of memory for ECC, then
	* enable errors */
	uint *p = 0;
	uint i = 0;
	volatile immap_t immap = (immap_t )CFG_IMMR;
	volatile ccsr_ddr_t *ddr= &immap->im_ddr;
	dma_init();
	for (p = 0; p < (uint )(8 * 1024); p++) {
	if (((unsigned int)p & 0x1f) == 0) { dcbz(p); }
	*p = (unsigned int)0xdeadbeef;
	if (((unsigned int)p & 0x1c) == 0x1c) { dcbf(p); }
	}

	/* 8K */
	dma_xfer((uint )0x2000,0x2000,(uint )0);
	/* 16K */
	dma_xfer((uint )0x4000,0x4000,(uint )0);
	/* 32K */
	dma_xfer((uint )0x8000,0x8000,(uint )0);
	/* 64K */
	dma_xfer((uint )0x10000,0x10000,(uint )0);
	/* 128k */
	dma_xfer((uint )0x20000,0x20000,(uint )0);
	/* 256k */
	dma_xfer((uint )0x40000,0x40000,(uint )0);
	/* 512k */
	dma_xfer((uint )0x80000,0x80000,(uint )0);
	/* 1M */
	dma_xfer((uint )0x100000,0x100000,(uint )0);
	/* 2M */
	dma_xfer((uint )0x200000,0x200000,(uint )0);
	/* 4M */
	dma_xfer((uint )0x400000,0x400000,(uint )0);

	for (i = 1; i < dram_size / 0x800000; i++) {
	dma_xfer((uint )(0x800000i),0x800000,(uint *)0);
	}

	/* Enable errors for ECC */
	ddr->err_disable = 0x00000000;
	asm("sync;isync;msync");
	}
	#endif

	return dram_size;
	}

	#if defined(CFG_DRAM_TEST)
	int testdram (void)
	{
	uint pstart = (uint ) CFG_MEMTEST_START;
	uint pend = (uint ) CFG_MEMTEST_END;
	uint *p;

	printf("SDRAM test phase 1:\n");
	for (p = pstart; p < pend; p++)
	*p = 0xaaaaaaaa;

	for (p = pstart; p < pend; p++) {
	if (*p != 0xaaaaaaaa) {
	printf ("SDRAM test fails at: %08x\n", (uint) p);
	return 1;
	}
	}

	printf("SDRAM test phase 2:\n");
	for (p = pstart; p < pend; p++)
	*p = 0x55555555;

	for (p = pstart; p < pend; p++) {
	if (*p != 0x55555555) {
	printf ("SDRAM test fails at: %08x\n", (uint) p);
	return 1;
	}
	}

	printf("SDRAM test passed.\n");
	return 0;
	}
	#endif

	#if !defined(CONFIG_SPD_EEPROM)
	/*************************************************************************
	* fixed sdram init -- doesn't use serial presence detect.
	************************************************************************/
	long int fixed_sdram (void)
	{
	#ifndef CFG_RAMBOOT
	volatile immap_t immap = (immap_t )CFG_IMMR;
	volatile ccsr_ddr_t *ddr= &immap->im_ddr;

	ddr->cs0_bnds = CFG_DDR_CS0_BNDS;
	ddr->cs0_config = CFG_DDR_CS0_CONFIG;
	ddr->timing_cfg_1 = CFG_DDR_TIMING_1;
	ddr->timing_cfg_2 = CFG_DDR_TIMING_2;
	ddr->sdram_mode = CFG_DDR_MODE;
	ddr->sdram_interval = CFG_DDR_INTERVAL;
	#if defined (CONFIG_DDR_ECC)
	ddr->err_disable = 0x0000000D;
	ddr->err_sbe = 0x00ff0000;
	#endif
	asm("sync;isync;msync");
	udelay(500);
	#if defined (CONFIG_DDR_ECC)
	/* Enable ECC checking */
	ddr->sdram_cfg = (CFG_DDR_CONTROL \| 0x20000000);
	#else
	ddr->sdram_cfg = CFG_DDR_CONTROL;
	#endif
	asm("sync; isync; msync");
	udelay(500);
	#endif
	return (CFG_SDRAM_SIZE * 1024 * 1024);
	}
	#endif /* !defined(CONFIG_SPD_EEPROM) */