[people/ms/u-boot.git] / board / amcc / bamboo / flash.c

/*
 * (C) Copyright 2004-2005
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
 * Add support for Am29F016D and dynamic switch setting.
 *
 * 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
 */

/*
 * Modified 4/5/2001
 * Wait for completion of each sector erase command issued
 * 4/5/2001
 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
 */

#include <common.h>
#include <ppc4xx.h>
#include <asm/processor.h>
#include <ppc440.h>
#include "bamboo.h"

#undef DEBUG

#ifdef DEBUG
#define DEBUGF(x...) printf(x)
#else
#define DEBUGF(x...)
#endif				/* DEBUG */

flash_info_t flash_info[CFG_MAX_FLASH_BANKS];	/* info for FLASH chips        */

/*
 * Mark big flash bank (16 bit instead of 8 bit access) in address with bit 0
 */
static unsigned long flash_addr_table[8][CFG_MAX_FLASH_BANKS] = {
	{0x87800001, 0xFFF00000, 0xFFF80000}, /* 0:boot from small flash */
	{0x00000000, 0x00000000, 0x00000000}, /* 1:boot from pci 66      */
	{0x00000000, 0x00000000, 0x00000000}, /* 2:boot from nand flash  */
	{0x87800000, 0x87880000, 0xFF800001}, /* 3:boot from big flash 33*/
	{0x87800000, 0x87880000, 0xFF800001}, /* 4:boot from big flash 66*/
	{0x00000000, 0x00000000, 0x00000000}, /* 5:boot from             */
	{0x00000000, 0x00000000, 0x00000000}, /* 6:boot from pci 66      */
	{0x00000000, 0x00000000, 0x00000000}, /* 7:boot from             */
};

/*
 * include common flash code (for amcc boards)
 */
#include "../common/flash.c"

/*-----------------------------------------------------------------------
 * Functions
 */
static ulong flash_get_size(vu_long * addr, flash_info_t * info);
static int write_word(flash_info_t * info, ulong dest, ulong data);

/*-----------------------------------------------------------------------
 */

unsigned long flash_init(void)
{
	unsigned long total_b = 0;
	unsigned long size_b[CFG_MAX_FLASH_BANKS];
	unsigned short index = 0;
	int i;
	unsigned long val;
	unsigned long ebc_boot_size;
	unsigned long boot_selection;

	mfsdr(sdr_pstrp0, val);
	index = (val & SDR0_PSTRP0_BOOTSTRAP_MASK) >> 29;

	if ((index == 5) || (index == 7)) {
		/*
		 * Boot Settings in IIC EEprom address 0xA8 or 0xA4
		 * Read Serial Device Strap Register1 in PPC440EP
		 */
		mfsdr(sdr_sdstp1, val);
		boot_selection  = val & SDR0_SDSTP1_BOOT_SEL_MASK;
		ebc_boot_size   = val & SDR0_SDSTP1_EBC_ROM_BS_MASK;

		switch(boot_selection) {
		case SDR0_SDSTP1_BOOT_SEL_EBC:
			switch(ebc_boot_size) {
			case SDR0_SDSTP1_EBC_ROM_BS_16BIT:
				index = 3;
				break;
			case SDR0_SDSTP1_EBC_ROM_BS_8BIT:
				index = 0;
				break;
			}
			break;

		case SDR0_SDSTP1_BOOT_SEL_PCI:
			index = 1;
			break;

		case SDR0_SDSTP1_BOOT_SEL_NDFC:
			index = 2;
			break;
		}
	}

	DEBUGF("\n");
	DEBUGF("FLASH: Index: %d\n", index);

	/* Init: no FLASHes known */
	for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
		flash_info[i].flash_id = FLASH_UNKNOWN;
		flash_info[i].sector_count = -1;
		flash_info[i].size = 0;

		/* check whether the address is 0 */
		if (flash_addr_table[index][i] == 0) {
			continue;
		}

		/* call flash_get_size() to initialize sector address */
		size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
				   &flash_info[i]);
		flash_info[i].size = size_b[i];
		if (flash_info[i].flash_id == FLASH_UNKNOWN) {
			printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
			       i, size_b[i], size_b[i] << 20);
			flash_info[i].sector_count = -1;
			flash_info[i].size = 0;
		}

		/* Monitor protection ON by default */
		(void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE,
				    CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
				    &flash_info[i]);
#if defined(CFG_ENV_IS_IN_FLASH)
		(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR,
				    CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
				    &flash_info[i]);
#if defined(CFG_ENV_IS_IN_FLASH) && defined(CFG_ENV_ADDR_REDUND)
		(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND,
				    CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,
				    &flash_info[i]);
#endif
#endif

		total_b += flash_info[i].size;
	}

	return total_b;
}
Commit	Line	Data
17f50f22 SR	1	/*
	2	* (C) Copyright 2004-2005
	3	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	4	*
	5	* (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
	6	* Add support for Am29F016D and dynamic switch setting.
	7	*
	8	* See file CREDITS for list of people who contributed to this
	9	* project.
	10	*
	11	* This program is free software; you can redistribute it and/or
	12	* modify it under the terms of the GNU General Public License as
	13	* published by the Free Software Foundation; either version 2 of
	14	* the License, or (at your option) any later version.
	15	*
	16	* This program is distributed in the hope that it will be useful,
	17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	* GNU General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License
	22	* along with this program; if not, write to the Free Software
	23	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	24	* MA 02111-1307 USA
	25	*/
	26
	27	/*
	28	* Modified 4/5/2001
	29	* Wait for completion of each sector erase command issued
	30	* 4/5/2001
	31	* Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
	32	*/
	33
	34	#include <common.h>
	35	#include <ppc4xx.h>
	36	#include <asm/processor.h>
	37	#include <ppc440.h>
	38	#include "bamboo.h"
	39
	40	#undef DEBUG
	41
	42	#ifdef DEBUG
	43	#define DEBUGF(x...) printf(x)
	44	#else
	45	#define DEBUGF(x...)
	46	#endif /* DEBUG */
	47
	48	flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
	49
	50	/*
	51	* Mark big flash bank (16 bit instead of 8 bit access) in address with bit 0
	52	*/
	53	static unsigned long flash_addr_table[8][CFG_MAX_FLASH_BANKS] = {
	54	{0x87800001, 0xFFF00000, 0xFFF80000}, /* 0:boot from small flash */
	55	{0x00000000, 0x00000000, 0x00000000}, /* 1:boot from pci 66 */
	56	{0x00000000, 0x00000000, 0x00000000}, /* 2:boot from nand flash */
	57	{0x87800000, 0x87880000, 0xFF800001}, /* 3:boot from big flash 33*/
	58	{0x87800000, 0x87880000, 0xFF800001}, /* 4:boot from big flash 66*/
	59	{0x00000000, 0x00000000, 0x00000000}, /* 5:boot from */
	60	{0x00000000, 0x00000000, 0x00000000}, /* 6:boot from pci 66 */
	61	{0x00000000, 0x00000000, 0x00000000}, /* 7:boot from */
	62	};
	63
	64	/*
65	* include common flash code (for amcc boards)
66	*/
67	#include "../common/flash.c"
68
69	/*-----------------------------------------------------------------------
70	* Functions
71	*/
72	static ulong flash_get_size(vu_long * addr, flash_info_t * info);
73	static int write_word(flash_info_t * info, ulong dest, ulong data);
74
75	/*-----------------------------------------------------------------------
76	*/
77
78	unsigned long flash_init(void)
79	{
80	unsigned long total_b = 0;
81	unsigned long size_b[CFG_MAX_FLASH_BANKS];
82	unsigned short index = 0;
83	int i;
84	unsigned long val;
85	unsigned long ebc_boot_size;
86	unsigned long boot_selection;
87
88	mfsdr(sdr_pstrp0, val);
89	index = (val & SDR0_PSTRP0_BOOTSTRAP_MASK) >> 29;
90
91	if ((index == 5) \|\| (index == 7)) {
92	/*
93	* Boot Settings in IIC EEprom address 0xA8 or 0xA4
94	* Read Serial Device Strap Register1 in PPC440EP
95	*/
96	mfsdr(sdr_sdstp1, val);
97	boot_selection = val & SDR0_SDSTP1_BOOT_SEL_MASK;
98	ebc_boot_size = val & SDR0_SDSTP1_EBC_ROM_BS_MASK;
99
100	switch(boot_selection) {
101	case SDR0_SDSTP1_BOOT_SEL_EBC:
102	switch(ebc_boot_size) {
103	case SDR0_SDSTP1_EBC_ROM_BS_16BIT:
104	index = 3;
105	break;
106	case SDR0_SDSTP1_EBC_ROM_BS_8BIT:
107	index = 0;
108	break;
109	}
110	break;
111
112	case SDR0_SDSTP1_BOOT_SEL_PCI:
113	index = 1;
114	break;
115
116	case SDR0_SDSTP1_BOOT_SEL_NDFC:
117	index = 2;
118	break;
119	}
120	}
121
122	DEBUGF("\n");
123	DEBUGF("FLASH: Index: %d\n", index);
124
125	/* Init: no FLASHes known */
126	for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
127	flash_info[i].flash_id = FLASH_UNKNOWN;
128	flash_info[i].sector_count = -1;
129	flash_info[i].size = 0;
130
131	/* check whether the address is 0 */
132	if (flash_addr_table[index][i] == 0) {
133	continue;
134	}
135
136	/* call flash_get_size() to initialize sector address */
137	size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
138	&flash_info[i]);
139	flash_info[i].size = size_b[i];
140	if (flash_info[i].flash_id == FLASH_UNKNOWN) {
141	printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
142	i, size_b[i], size_b[i] << 20);
143	flash_info[i].sector_count = -1;
144	flash_info[i].size = 0;
145	}
146
147	/* Monitor protection ON by default */
148	(void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE,
149	CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
150	&flash_info[i]);
151	#if defined(CFG_ENV_IS_IN_FLASH)
152	(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR,
153	CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
154	&flash_info[i]);
155	#if defined(CFG_ENV_IS_IN_FLASH) && defined(CFG_ENV_ADDR_REDUND)
156	(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND,
157	CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,
158	&flash_info[i]);
159	#endif
160	#endif
161
162	total_b += flash_info[i].size;
163	}
164
165	return total_b;
166	}