board/cds/mpc8548cds/mpc8548cds.c - uboot/windcharger - Git at Google

 /*
  * Copyright 2004 Freescale Semiconductor.
  *
  * (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 <pci.h>
 #include <asm/processor.h>
 #include <asm/immap_85xx.h>
 #include <spd.h>

 #include "../common/cadmus.h"
 #include "../common/eeprom.h"

 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
 extern void ddr_enable_ecc(unsigned int dram_size);
 #endif

 extern long int spd_sdram(void);

 void local_bus_init(void);
 void sdram_init(void);

 int board_early_init_f (void)
 {
 	return 0;
 }

 int checkboard (void)
 {
 	volatile immap_t *immap = (immap_t *) CFG_CCSRBAR;
 	volatile ccsr_gur_t *gur = &immap->im_gur;

 	/* PCI slot in USER bits CSR[6:7] by convention. */
 	uint pci_slot = get_pci_slot ();

 	uint pci_dual = get_pci_dual ();	/* PCI DUAL in CM_PCI[3] */
 	uint pci1_32 = gur->pordevsr & 0x10000;	/* PORDEVSR[15] */
 	uint pci1_clk_sel = gur->porpllsr & 0x8000;	/* PORPLLSR[16] */
 	uint pci2_clk_sel = gur->porpllsr & 0x4000;	/* PORPLLSR[17] */

 	uint pci1_speed = get_clock_freq ();	/* PCI PSPEED in [4:5] */

 	uint cpu_board_rev = get_cpu_board_revision ();

 	printf ("Board: CDS Version 0x%02x, PCI Slot %d\n",
 		get_board_version (), pci_slot);

 	printf ("CPU Board Revision %d.%d (0x%04x)\n",
 		MPC85XX_CPU_BOARD_MAJOR (cpu_board_rev),
 		MPC85XX_CPU_BOARD_MINOR (cpu_board_rev), cpu_board_rev);

 	printf ("    PCI1: %d bit, %s MHz, %s\n",
 		(pci1_32) ? 32 : 64,
 		(pci1_speed == 33000000) ? "33" :
 		(pci1_speed == 66000000) ? "66" : "unknown",
 		pci1_clk_sel ? "sync" : "async");

 	if (pci_dual) {
 		printf ("    PCI2: 32 bit, 66 MHz, %s\n",
 			pci2_clk_sel ? "sync" : "async");
 	} else {
 		printf ("    PCI2: disabled\n");
 	}

 	/*
 	 * Initialize local bus.
 	 */
 	local_bus_init ();


 	/*
 	 * Hack TSEC 3 and 4 IO voltages.
 	 */
 	gur->tsec34ioovcr = 0xe7e0;	/*  1110 0111 1110 0xxx */

 	return 0;
 }

 long int
 initdram(int board_type)
 {
 	long dram_size = 0;
 	volatile immap_t *immap = (immap_t *)CFG_IMMR;

 	puts("Initializing\n");

 #if defined(CONFIG_DDR_DLL)
 	{
 		/*
 		 * Work around to stabilize DDR DLL MSYNC_IN.
 		 * Errata DDR9 seems to have been fixed.
 		 * This is now the workaround for Errata DDR11:
 		 *    Override DLL = 1, Course Adj = 1, Tap Select = 0
 		 */

 		volatile ccsr_gur_t *gur= &immap->im_gur;

 		gur->ddrdllcr = 0x81000000;
 		asm("sync;isync;msync");
 		udelay(200);
 	}
 #endif
 	dram_size = spd_sdram();

 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
 	/*
 	 * Initialize and enable DDR ECC.
 	 */
 	ddr_enable_ecc(dram_size);
 #endif
 	/*
 	 * SDRAM Initialization
 	 */
 	sdram_init();

 	puts("    DDR: ");
 	return dram_size;
 }

 /*
  * Initialize Local Bus
  */
 void
 local_bus_init(void)
 {
 	volatile immap_t *immap = (immap_t *)CFG_IMMR;
 	volatile ccsr_gur_t *gur = &immap->im_gur;
 	volatile ccsr_lbc_t *lbc = &immap->im_lbc;

 	uint clkdiv;
 	uint lbc_hz;
 	sys_info_t sysinfo;

 	get_sys_info(&sysinfo);
 	clkdiv = (lbc->lcrr & 0x0f) * 2;
 	lbc_hz = sysinfo.freqSystemBus / 1000000 / clkdiv;

 	gur->lbiuiplldcr1 = 0x00078080;
 	if (clkdiv == 16) {
 		gur->lbiuiplldcr0 = 0x7c0f1bf0;
 	} else if (clkdiv == 8) {
 		gur->lbiuiplldcr0 = 0x6c0f1bf0;
 	} else if (clkdiv == 4) {
 		gur->lbiuiplldcr0 = 0x5c0f1bf0;
 	}

 	lbc->lcrr |= 0x00030000;

 	asm("sync;isync;msync");
 }

 /*
  * Initialize SDRAM memory on the Local Bus.
  */
 void
 sdram_init(void)
 {
 #if defined(CFG_OR2_PRELIM) && defined(CFG_BR2_PRELIM)

 	uint idx;
 	volatile immap_t *immap = (immap_t *)CFG_IMMR;
 	volatile ccsr_lbc_t *lbc = &immap->im_lbc;
 	uint *sdram_addr = (uint *)CFG_LBC_SDRAM_BASE;
 	uint cpu_board_rev;
 	uint lsdmr_common;

 	puts("    SDRAM: ");

 	print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");

 	/*
 	 * Setup SDRAM Base and Option Registers
 	 */
 	lbc->or2 = CFG_OR2_PRELIM;
 	asm("msync");

 	lbc->br2 = CFG_BR2_PRELIM;
 	asm("msync");

 	lbc->lbcr = CFG_LBC_LBCR;
 	asm("msync");


 	lbc->lsrt = CFG_LBC_LSRT;
 	lbc->mrtpr = CFG_LBC_MRTPR;
 	asm("msync");

 	/*
 	 * MPC8548 uses "new" 15-16 style addressing.
 	 */
 	cpu_board_rev = get_cpu_board_revision();
 	lsdmr_common = CFG_LBC_LSDMR_COMMON;
 	lsdmr_common |= CFG_LBC_LSDMR_BSMA1516;

 	/*
 	 * Issue PRECHARGE ALL command.
 	 */
 	lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_PCHALL;
 	asm("sync;msync");
 	*sdram_addr = 0xff;
 	ppcDcbf((unsigned long) sdram_addr);
 	udelay(100);

 	/*
 	 * Issue 8 AUTO REFRESH commands.
 	 */
 	for (idx = 0; idx < 8; idx++) {
 		lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_ARFRSH;
 		asm("sync;msync");
 		*sdram_addr = 0xff;
 		ppcDcbf((unsigned long) sdram_addr);
 		udelay(100);
 	}

 	/*
 	 * Issue 8 MODE-set command.
 	 */
 	lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_MRW;
 	asm("sync;msync");
 	*sdram_addr = 0xff;
 	ppcDcbf((unsigned long) sdram_addr);
 	udelay(100);

 	/*
 	 * Issue NORMAL OP command.
 	 */
 	lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_NORMAL;
 	asm("sync;msync");
 	*sdram_addr = 0xff;
 	ppcDcbf((unsigned long) sdram_addr);
 	udelay(200);    /* Overkill. Must wait > 200 bus cycles */

 #endif	/* enable SDRAM init */
 }

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

 	printf("Testing DRAM from 0x%08x to 0x%08x\n",
 	       CFG_MEMTEST_START,
 	       CFG_MEMTEST_END);

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

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

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

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

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

 #if defined(CONFIG_PCI)

 /*
  * Initialize PCI Devices, report devices found.
  */

 #ifndef CONFIG_PCI_PNP
 static struct pci_config_table pci_mpc85xxcds_config_table[] = {
     { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
       PCI_IDSEL_NUMBER, PCI_ANY_ID,
       pci_cfgfunc_config_device, { PCI_ENET0_IOADDR,
 				   PCI_ENET0_MEMADDR,
 				   PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
       } },
     { }
 };
 #endif

 static struct pci_controller hose = {
 #ifndef CONFIG_PCI_PNP
 	config_table: pci_mpc85xxcds_config_table,
 #endif
 };

 #endif	/* CONFIG_PCI */

 void
 pci_init_board(void)
 {
 #ifdef CONFIG_PCI
 	extern void pci_mpc85xx_init(struct pci_controller *hose);

 	pci_mpc85xx_init(&hose);
 #endif
 }
	/*
	* Copyright 2004 Freescale Semiconductor.
	*
	* (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 <pci.h>
	#include <asm/processor.h>
	#include <asm/immap_85xx.h>
	#include <spd.h>

	#include "../common/cadmus.h"
	#include "../common/eeprom.h"

	#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
	extern void ddr_enable_ecc(unsigned int dram_size);
	#endif

	extern long int spd_sdram(void);

	void local_bus_init(void);
	void sdram_init(void);

	int board_early_init_f (void)
	{
	return 0;
	}

	int checkboard (void)
	{
	volatile immap_t immap = (immap_t ) CFG_CCSRBAR;
	volatile ccsr_gur_t *gur = &immap->im_gur;

	/* PCI slot in USER bits CSR[6:7] by convention. */
	uint pci_slot = get_pci_slot ();

	uint pci_dual = get_pci_dual (); /* PCI DUAL in CM_PCI[3] */
	uint pci1_32 = gur->pordevsr & 0x10000; /* PORDEVSR[15] */
	uint pci1_clk_sel = gur->porpllsr & 0x8000; /* PORPLLSR[16] */
	uint pci2_clk_sel = gur->porpllsr & 0x4000; /* PORPLLSR[17] */

	uint pci1_speed = get_clock_freq (); /* PCI PSPEED in [4:5] */

	uint cpu_board_rev = get_cpu_board_revision ();

	printf ("Board: CDS Version 0x%02x, PCI Slot %d\n",
	get_board_version (), pci_slot);

	printf ("CPU Board Revision %d.%d (0x%04x)\n",
	MPC85XX_CPU_BOARD_MAJOR (cpu_board_rev),
	MPC85XX_CPU_BOARD_MINOR (cpu_board_rev), cpu_board_rev);

	printf (" PCI1: %d bit, %s MHz, %s\n",
	(pci1_32) ? 32 : 64,
	(pci1_speed == 33000000) ? "33" :
	(pci1_speed == 66000000) ? "66" : "unknown",
	pci1_clk_sel ? "sync" : "async");

	if (pci_dual) {
	printf (" PCI2: 32 bit, 66 MHz, %s\n",
	pci2_clk_sel ? "sync" : "async");
	} else {
	printf (" PCI2: disabled\n");
	}

	/*
	* Initialize local bus.
	*/
	local_bus_init ();


	/*
	* Hack TSEC 3 and 4 IO voltages.
	*/
	gur->tsec34ioovcr = 0xe7e0; /* 1110 0111 1110 0xxx */

	return 0;
	}

	long int
	initdram(int board_type)
	{
	long dram_size = 0;
	volatile immap_t immap = (immap_t )CFG_IMMR;

	puts("Initializing\n");

	#if defined(CONFIG_DDR_DLL)
	{
	/*
	* Work around to stabilize DDR DLL MSYNC_IN.
	* Errata DDR9 seems to have been fixed.
	* This is now the workaround for Errata DDR11:
	* Override DLL = 1, Course Adj = 1, Tap Select = 0
	*/

	volatile ccsr_gur_t *gur= &immap->im_gur;

	gur->ddrdllcr = 0x81000000;
	asm("sync;isync;msync");
	udelay(200);
	}
	#endif
	dram_size = spd_sdram();

	#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
	/*
	* Initialize and enable DDR ECC.
	*/
	ddr_enable_ecc(dram_size);
	#endif
	/*
	* SDRAM Initialization
	*/
	sdram_init();

	puts(" DDR: ");
	return dram_size;
	}

	/*
	* Initialize Local Bus
	*/
	void
	local_bus_init(void)
	{
	volatile immap_t immap = (immap_t )CFG_IMMR;
	volatile ccsr_gur_t *gur = &immap->im_gur;
	volatile ccsr_lbc_t *lbc = &immap->im_lbc;

	uint clkdiv;
	uint lbc_hz;
	sys_info_t sysinfo;

	get_sys_info(&sysinfo);
	clkdiv = (lbc->lcrr & 0x0f) * 2;
	lbc_hz = sysinfo.freqSystemBus / 1000000 / clkdiv;

	gur->lbiuiplldcr1 = 0x00078080;
	if (clkdiv == 16) {
	gur->lbiuiplldcr0 = 0x7c0f1bf0;
	} else if (clkdiv == 8) {
	gur->lbiuiplldcr0 = 0x6c0f1bf0;
	} else if (clkdiv == 4) {
	gur->lbiuiplldcr0 = 0x5c0f1bf0;
	}

	lbc->lcrr \|= 0x00030000;

	asm("sync;isync;msync");
	}

	/*
	* Initialize SDRAM memory on the Local Bus.
	*/
	void
	sdram_init(void)
	{
	#if defined(CFG_OR2_PRELIM) && defined(CFG_BR2_PRELIM)

	uint idx;
	volatile immap_t immap = (immap_t )CFG_IMMR;
	volatile ccsr_lbc_t *lbc = &immap->im_lbc;
	uint sdram_addr = (uint )CFG_LBC_SDRAM_BASE;
	uint cpu_board_rev;
	uint lsdmr_common;

	puts(" SDRAM: ");

	print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");

	/*
	* Setup SDRAM Base and Option Registers
	*/
	lbc->or2 = CFG_OR2_PRELIM;
	asm("msync");

	lbc->br2 = CFG_BR2_PRELIM;
	asm("msync");

	lbc->lbcr = CFG_LBC_LBCR;
	asm("msync");


	lbc->lsrt = CFG_LBC_LSRT;
	lbc->mrtpr = CFG_LBC_MRTPR;
	asm("msync");

	/*
	* MPC8548 uses "new" 15-16 style addressing.
	*/
	cpu_board_rev = get_cpu_board_revision();
	lsdmr_common = CFG_LBC_LSDMR_COMMON;
	lsdmr_common \|= CFG_LBC_LSDMR_BSMA1516;

	/*
	* Issue PRECHARGE ALL command.
	*/
	lbc->lsdmr = lsdmr_common \| CFG_LBC_LSDMR_OP_PCHALL;
	asm("sync;msync");
	*sdram_addr = 0xff;
	ppcDcbf((unsigned long) sdram_addr);
	udelay(100);

	/*
	* Issue 8 AUTO REFRESH commands.
	*/
	for (idx = 0; idx < 8; idx++) {
	lbc->lsdmr = lsdmr_common \| CFG_LBC_LSDMR_OP_ARFRSH;
	asm("sync;msync");
	*sdram_addr = 0xff;
	ppcDcbf((unsigned long) sdram_addr);
	udelay(100);
	}

	/*
	* Issue 8 MODE-set command.
	*/
	lbc->lsdmr = lsdmr_common \| CFG_LBC_LSDMR_OP_MRW;
	asm("sync;msync");
	*sdram_addr = 0xff;
	ppcDcbf((unsigned long) sdram_addr);
	udelay(100);

	/*
	* Issue NORMAL OP command.
	*/
	lbc->lsdmr = lsdmr_common \| CFG_LBC_LSDMR_OP_NORMAL;
	asm("sync;msync");
	*sdram_addr = 0xff;
	ppcDcbf((unsigned long) sdram_addr);
	udelay(200); /* Overkill. Must wait > 200 bus cycles */

	#endif /* enable SDRAM init */
	}

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

	printf("Testing DRAM from 0x%08x to 0x%08x\n",
	CFG_MEMTEST_START,
	CFG_MEMTEST_END);

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

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

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

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

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

	#if defined(CONFIG_PCI)

	/*
	* Initialize PCI Devices, report devices found.
	*/

	#ifndef CONFIG_PCI_PNP
	static struct pci_config_table pci_mpc85xxcds_config_table[] = {
	{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
	PCI_IDSEL_NUMBER, PCI_ANY_ID,
	pci_cfgfunc_config_device, { PCI_ENET0_IOADDR,
	PCI_ENET0_MEMADDR,
	PCI_COMMAND_MEMORY \| PCI_COMMAND_MASTER
	} },
	{ }
	};
	#endif

	static struct pci_controller hose = {
	#ifndef CONFIG_PCI_PNP
	config_table: pci_mpc85xxcds_config_table,
	#endif
	};

	#endif /* CONFIG_PCI */

	void
	pci_init_board(void)
	{
	#ifdef CONFIG_PCI
	extern void pci_mpc85xx_init(struct pci_controller *hose);

	pci_mpc85xx_init(&hose);
	#endif
	}