board/mcc200/mcc200.c - platform/external/u-boot - Gitiles

 /*
  * (C) Copyright 2003-2006
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * (C) Copyright 2004
  * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.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 <mpc5xxx.h>
 #include <pci.h>
 #include <asm/processor.h>

 /* Two MT48LC8M32B2 for 32 MB */
 /* #include "mt48lc8m32b2-6-7.h" */

 /* One MT48LC16M32S2 for 64 MB */
 /* #include "mt48lc16m32s2-75.h" */
 #if defined (CONFIG_MCC200_SDRAM)
 #include "mt48lc16m16a2-75.h"
 #else
 #include "mt46v16m16-75.h"
 #endif

 DECLARE_GLOBAL_DATA_PTR;

 extern flash_info_t flash_info[];	/* FLASH chips info */

 ulong flash_get_size (ulong base, int banknum);

 #ifndef CFG_RAMBOOT
 static void sdram_start (int hi_addr)
 {
 	long hi_addr_bit = hi_addr ? 0x01000000 : 0;

 	/* unlock mode register */
 	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 | hi_addr_bit;
 	__asm__ volatile ("sync");

 	/* precharge all banks */
 	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
 	__asm__ volatile ("sync");

 #if SDRAM_DDR
 	/* set mode register: extended mode */
 	*(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
 	__asm__ volatile ("sync");

 	/* set mode register: reset DLL */
 	*(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000;
 	__asm__ volatile ("sync");
 #endif

 	/* precharge all banks */
 	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
 	__asm__ volatile ("sync");

 	/* auto refresh */
 	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 | hi_addr_bit;
 	__asm__ volatile ("sync");

 	/* set mode register */
 	*(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE;
 	__asm__ volatile ("sync");

 	/* normal operation */
 	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
 	__asm__ volatile ("sync");

 	udelay(10);
 }
 #endif

 /*
  * ATTENTION: Although partially referenced initdram does NOT make real use
  *            use of CFG_SDRAM_BASE. The code does not work if CFG_SDRAM_BASE
  *            is something else than 0x00000000.
  */

 long int initdram (int board_type)
 {
 	ulong dramsize = 0;
 	ulong dramsize2 = 0;
 	uint svr, pvr;
 #ifndef CFG_RAMBOOT
 	ulong test1, test2;

 	/* setup SDRAM chip selects */
 	*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001e;/* 2G at 0x0 */
 	*(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x80000000;/* disabled */
 	__asm__ volatile ("sync");

 	/* setup config registers */
 	*(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
 	*(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
 	__asm__ volatile ("sync");

 #if SDRAM_DDR
 	/* set tap delay */
 	*(vu_long *)MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
 	__asm__ volatile ("sync");
 #endif

 	/* find RAM size using SDRAM CS0 only */
 	sdram_start(0);
 	test1 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
 	sdram_start(1);
 	test2 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
 	if (test1 > test2) {
 		sdram_start(0);
 		dramsize = test1;
 	} else {
 		dramsize = test2;
 	}

 	/* memory smaller than 1MB is impossible */
 	if (dramsize < (1 << 20)) {
 		dramsize = 0;
 	}

 	/* set SDRAM CS0 size according to the amount of RAM found */
 	if (dramsize > 0) {
 		*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x13 + __builtin_ffs(dramsize >> 20) - 1;
 	} else {
 		*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
 	}

 	/* let SDRAM CS1 start right after CS0 */
 	*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;/* 2G */

 	/* find RAM size using SDRAM CS1 only */
 	if (!dramsize)
 		sdram_start(0);
 	test2 = test1 = get_ram_size((long *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
 	if (!dramsize) {
 		sdram_start(1);
 		test2 = get_ram_size((long *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
 	}
 	if (test1 > test2) {
 		sdram_start(0);
 		dramsize2 = test1;
 	} else {
 		dramsize2 = test2;
 	}

 	/* memory smaller than 1MB is impossible */
 	if (dramsize2 < (1 << 20)) {
 		dramsize2 = 0;
 	}

 	/* set SDRAM CS1 size according to the amount of RAM found */
 	if (dramsize2 > 0) {
 		*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize
 			| (0x13 + __builtin_ffs(dramsize2 >> 20) - 1);
 	} else {
 		*(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
 	}

 #else /* CFG_RAMBOOT */

 	/* retrieve size of memory connected to SDRAM CS0 */
 	dramsize = *(vu_long *)MPC5XXX_SDRAM_CS0CFG & 0xFF;
 	if (dramsize >= 0x13) {
 		dramsize = (1 << (dramsize - 0x13)) << 20;
 	} else {
 		dramsize = 0;
 	}

 	/* retrieve size of memory connected to SDRAM CS1 */
 	dramsize2 = *(vu_long *)MPC5XXX_SDRAM_CS1CFG & 0xFF;
 	if (dramsize2 >= 0x13) {
 		dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
 	} else {
 		dramsize2 = 0;
 	}

 #endif /* CFG_RAMBOOT */

 	/*
 	 * On MPC5200B we need to set the special configuration delay in the
 	 * DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
 	 * Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
 	 *
 	 * "The SDelay should be written to a value of 0x00000004. It is
 	 * required to account for changes caused by normal wafer processing
 	 * parameters."
 	 */
 	svr = get_svr();
 	pvr = get_pvr();
 	if ((SVR_MJREV(svr) >= 2) && (PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4)) {
 		*(vu_long *)MPC5XXX_SDRAM_SDELAY = 0x04;
 		__asm__ volatile ("sync");
 	}

 	return dramsize + dramsize2;
 }

 int checkboard (void)
 {
 #if defined(CONFIG_PRS200)
 	puts ("Board: PRS200\n");
 #else
 	puts ("Board: MCC200\n");
 #endif
 	return 0;
 }

 int misc_init_r (void)
 {
 	ulong flash_sup_end, snum;

 	/*
 	 * Adjust flash start and offset to detected values
 	 */
 	gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
 	gd->bd->bi_flashoffset = 0;

 	/*
 	 * Check if boot FLASH isn't max size
 	 */
 	if (gd->bd->bi_flashsize < (0 - CFG_FLASH_BASE)) {
 		/* adjust mapping */
 		*(vu_long *)MPC5XXX_BOOTCS_START = *(vu_long *)MPC5XXX_CS0_START =
 			START_REG(gd->bd->bi_flashstart);
 		*(vu_long *)MPC5XXX_BOOTCS_STOP = *(vu_long *)MPC5XXX_CS0_STOP =
 			STOP_REG(gd->bd->bi_flashstart, gd->bd->bi_flashsize);

 		/*
 		 * Re-check to get correct base address
 		 */
 		flash_get_size(gd->bd->bi_flashstart, CFG_MAX_FLASH_BANKS - 1);

 		/*
 		 * Re-do flash protection upon new addresses
 		 */
 		flash_protect (FLAG_PROTECT_CLEAR,
 			       gd->bd->bi_flashstart, 0xffffffff,
 			       &flash_info[CFG_MAX_FLASH_BANKS - 1]);

 		/* Monitor protection ON by default */
 		flash_protect (FLAG_PROTECT_SET,
 			       CFG_MONITOR_BASE, CFG_MONITOR_BASE + monitor_flash_len - 1,
 			       &flash_info[CFG_MAX_FLASH_BANKS - 1]);

 		/* Environment protection ON by default */
 		flash_protect (FLAG_PROTECT_SET,
 			       CFG_ENV_ADDR,
 			       CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
 			       &flash_info[CFG_MAX_FLASH_BANKS - 1]);

 		/* Redundant environment protection ON by default */
 		flash_protect (FLAG_PROTECT_SET,
 			       CFG_ENV_ADDR_REDUND,
 			       CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1,
 			       &flash_info[CFG_MAX_FLASH_BANKS - 1]);
 	}

 	if (gd->bd->bi_flashsize > (32 << 20)) {
 		/* Unprotect the upper bank of the Flash */
 		*(volatile int*)MPC5XXX_CS0_CFG |= (1 << 6);
 		flash_protect (FLAG_PROTECT_CLEAR,
 			       flash_info[0].start[0] + flash_info[0].size / 2,
 			       (flash_info[0].start[0] - 1) + flash_info[0].size,
 			       &flash_info[0]);
 		*(volatile int*)MPC5XXX_CS0_CFG &= ~(1 << 6);
 		printf ("Warning: Only 32 of 64 MB of Flash are accessible from U-Boot\n");
 		flash_info[0].size = 32 << 20;
 		for (snum = 0, flash_sup_end = gd->bd->bi_flashstart + (32<<20);
 			flash_info[0].start[snum] < flash_sup_end;
 			snum++);
 		flash_info[0].sector_count = snum;
 	}

 	return (0);
 }

 #ifdef	CONFIG_PCI
 static struct pci_controller hose;

 extern void pci_mpc5xxx_init(struct pci_controller *);

 void pci_init_board(void)
 {
 	pci_mpc5xxx_init(&hose);
 }
 #endif

 #if defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET)

 void init_ide_reset (void)
 {
 	debug ("init_ide_reset\n");

 }

 void ide_set_reset (int idereset)
 {
 	debug ("ide_reset(%d)\n", idereset);

 }
 #endif /* defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) */

 #if (CONFIG_COMMANDS & CFG_CMD_DOC)
 extern void doc_probe (ulong physadr);
 void doc_init (void)
 {
 	doc_probe (CFG_DOC_BASE);
 }
 #endif
	/*
	* (C) Copyright 2003-2006
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*
	* (C) Copyright 2004
	* Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.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 <mpc5xxx.h>
	#include <pci.h>
	#include <asm/processor.h>

	/* Two MT48LC8M32B2 for 32 MB */
	/* #include "mt48lc8m32b2-6-7.h" */

	/* One MT48LC16M32S2 for 64 MB */
	/* #include "mt48lc16m32s2-75.h" */
	#if defined (CONFIG_MCC200_SDRAM)
	#include "mt48lc16m16a2-75.h"
	#else
	#include "mt46v16m16-75.h"
	#endif

	DECLARE_GLOBAL_DATA_PTR;

	extern flash_info_t flash_info[]; /* FLASH chips info */

	ulong flash_get_size (ulong base, int banknum);

	#ifndef CFG_RAMBOOT
	static void sdram_start (int hi_addr)
	{
	long hi_addr_bit = hi_addr ? 0x01000000 : 0;

	/* unlock mode register */
	(vu_long )MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL \| 0x80000000 \| hi_addr_bit;
	__asm__ volatile ("sync");

	/* precharge all banks */
	(vu_long )MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL \| 0x80000002 \| hi_addr_bit;
	__asm__ volatile ("sync");

	#if SDRAM_DDR
	/* set mode register: extended mode */
	(vu_long )MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
	__asm__ volatile ("sync");

	/* set mode register: reset DLL */
	(vu_long )MPC5XXX_SDRAM_MODE = SDRAM_MODE \| 0x04000000;
	__asm__ volatile ("sync");
	#endif

	/* precharge all banks */
	(vu_long )MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL \| 0x80000002 \| hi_addr_bit;
	__asm__ volatile ("sync");

	/* auto refresh */
	(vu_long )MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL \| 0x80000004 \| hi_addr_bit;
	__asm__ volatile ("sync");

	/* set mode register */
	(vu_long )MPC5XXX_SDRAM_MODE = SDRAM_MODE;
	__asm__ volatile ("sync");

	/* normal operation */
	(vu_long )MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL \| hi_addr_bit;
	__asm__ volatile ("sync");

	udelay(10);
	}
	#endif

	/*
	* ATTENTION: Although partially referenced initdram does NOT make real use
	* use of CFG_SDRAM_BASE. The code does not work if CFG_SDRAM_BASE
	* is something else than 0x00000000.
	*/

	long int initdram (int board_type)
	{
	ulong dramsize = 0;
	ulong dramsize2 = 0;
	uint svr, pvr;
	#ifndef CFG_RAMBOOT
	ulong test1, test2;

	/* setup SDRAM chip selects */
	(vu_long )MPC5XXX_SDRAM_CS0CFG = 0x0000001e;/* 2G at 0x0 */
	(vu_long )MPC5XXX_SDRAM_CS1CFG = 0x80000000;/* disabled */
	__asm__ volatile ("sync");

	/* setup config registers */
	(vu_long )MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
	(vu_long )MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
	__asm__ volatile ("sync");

	#if SDRAM_DDR
	/* set tap delay */
	(vu_long )MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
	__asm__ volatile ("sync");
	#endif

	/* find RAM size using SDRAM CS0 only */
	sdram_start(0);
	test1 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
	sdram_start(1);
	test2 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
	if (test1 > test2) {
	sdram_start(0);
	dramsize = test1;
	} else {
	dramsize = test2;
	}

	/* memory smaller than 1MB is impossible */
	if (dramsize < (1 << 20)) {
	dramsize = 0;
	}

	/* set SDRAM CS0 size according to the amount of RAM found */
	if (dramsize > 0) {
	(vu_long )MPC5XXX_SDRAM_CS0CFG = 0x13 + __builtin_ffs(dramsize >> 20) - 1;
	} else {
	(vu_long )MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
	}

	/* let SDRAM CS1 start right after CS0 */
	(vu_long )MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;/* 2G */

	/* find RAM size using SDRAM CS1 only */
	if (!dramsize)
	sdram_start(0);
	test2 = test1 = get_ram_size((long *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
	if (!dramsize) {
	sdram_start(1);
	test2 = get_ram_size((long *)(CFG_SDRAM_BASE + dramsize), 0x80000000);
	}
	if (test1 > test2) {
	sdram_start(0);
	dramsize2 = test1;
	} else {
	dramsize2 = test2;
	}

	/* memory smaller than 1MB is impossible */
	if (dramsize2 < (1 << 20)) {
	dramsize2 = 0;
	}

	/* set SDRAM CS1 size according to the amount of RAM found */
	if (dramsize2 > 0) {
	(vu_long )MPC5XXX_SDRAM_CS1CFG = dramsize
	\| (0x13 + __builtin_ffs(dramsize2 >> 20) - 1);
	} else {
	(vu_long )MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
	}

	#else /* CFG_RAMBOOT */

	/* retrieve size of memory connected to SDRAM CS0 */
	dramsize = (vu_long )MPC5XXX_SDRAM_CS0CFG & 0xFF;
	if (dramsize >= 0x13) {
	dramsize = (1 << (dramsize - 0x13)) << 20;
	} else {
	dramsize = 0;
	}

	/* retrieve size of memory connected to SDRAM CS1 */
	dramsize2 = (vu_long )MPC5XXX_SDRAM_CS1CFG & 0xFF;
	if (dramsize2 >= 0x13) {
	dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
	} else {
	dramsize2 = 0;
	}

	#endif /* CFG_RAMBOOT */

	/*
	* On MPC5200B we need to set the special configuration delay in the
	* DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
	* Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
	*
	* "The SDelay should be written to a value of 0x00000004. It is
	* required to account for changes caused by normal wafer processing
	* parameters."
	*/
	svr = get_svr();
	pvr = get_pvr();
	if ((SVR_MJREV(svr) >= 2) && (PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4)) {
	(vu_long )MPC5XXX_SDRAM_SDELAY = 0x04;
	__asm__ volatile ("sync");
	}

	return dramsize + dramsize2;
	}

	int checkboard (void)
	{
	#if defined(CONFIG_PRS200)
	puts ("Board: PRS200\n");
	#else
	puts ("Board: MCC200\n");
	#endif
	return 0;
	}

	int misc_init_r (void)
	{
	ulong flash_sup_end, snum;

	/*
	* Adjust flash start and offset to detected values
	*/
	gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
	gd->bd->bi_flashoffset = 0;

	/*
	* Check if boot FLASH isn't max size
	*/
	if (gd->bd->bi_flashsize < (0 - CFG_FLASH_BASE)) {
	/* adjust mapping */
	(vu_long )MPC5XXX_BOOTCS_START = (vu_long )MPC5XXX_CS0_START =
	START_REG(gd->bd->bi_flashstart);
	(vu_long )MPC5XXX_BOOTCS_STOP = (vu_long )MPC5XXX_CS0_STOP =
	STOP_REG(gd->bd->bi_flashstart, gd->bd->bi_flashsize);

	/*
	* Re-check to get correct base address
	*/
	flash_get_size(gd->bd->bi_flashstart, CFG_MAX_FLASH_BANKS - 1);

	/*
	* Re-do flash protection upon new addresses
	*/
	flash_protect (FLAG_PROTECT_CLEAR,
	gd->bd->bi_flashstart, 0xffffffff,
	&flash_info[CFG_MAX_FLASH_BANKS - 1]);

	/* Monitor protection ON by default */
	flash_protect (FLAG_PROTECT_SET,
	CFG_MONITOR_BASE, CFG_MONITOR_BASE + monitor_flash_len - 1,
	&flash_info[CFG_MAX_FLASH_BANKS - 1]);

	/* Environment protection ON by default */
	flash_protect (FLAG_PROTECT_SET,
	CFG_ENV_ADDR,
	CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
	&flash_info[CFG_MAX_FLASH_BANKS - 1]);

	/* Redundant environment protection ON by default */
	flash_protect (FLAG_PROTECT_SET,
	CFG_ENV_ADDR_REDUND,
	CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1,
	&flash_info[CFG_MAX_FLASH_BANKS - 1]);
	}

	if (gd->bd->bi_flashsize > (32 << 20)) {
	/* Unprotect the upper bank of the Flash */
	(volatile int)MPC5XXX_CS0_CFG \|= (1 << 6);
	flash_protect (FLAG_PROTECT_CLEAR,
	flash_info[0].start[0] + flash_info[0].size / 2,
	(flash_info[0].start[0] - 1) + flash_info[0].size,
	&flash_info[0]);
	(volatile int)MPC5XXX_CS0_CFG &= ~(1 << 6);
	printf ("Warning: Only 32 of 64 MB of Flash are accessible from U-Boot\n");
	flash_info[0].size = 32 << 20;
	for (snum = 0, flash_sup_end = gd->bd->bi_flashstart + (32<<20);
	flash_info[0].start[snum] < flash_sup_end;
	snum++);
	flash_info[0].sector_count = snum;
	}

	return (0);
	}

	#ifdef CONFIG_PCI
	static struct pci_controller hose;

	extern void pci_mpc5xxx_init(struct pci_controller *);

	void pci_init_board(void)
	{
	pci_mpc5xxx_init(&hose);
	}
	#endif

	#if defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET)

	void init_ide_reset (void)
	{
	debug ("init_ide_reset\n");

	}

	void ide_set_reset (int idereset)
	{
	debug ("ide_reset(%d)\n", idereset);

	}
	#endif /* defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) */

	#if (CONFIG_COMMANDS & CFG_CMD_DOC)
	extern void doc_probe (ulong physadr);
	void doc_init (void)
	{
	doc_probe (CFG_DOC_BASE);
	}
	#endif