[people/ms/u-boot.git] / board / prodrive / pdnb3 / flash.c

/*
 * (C) Copyright 2006
 * Stefan Roese, DENX Software Engineering, sr@denx.de.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <asm/arch/ixp425.h>

#if !defined(CONFIG_FLASH_CFI_DRIVER)

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

/*
 * Prototypes
 */
static ulong flash_get_size (vu_long * addr, flash_info_t * info);

static inline ulong ld(ulong x)
{
	ulong k = 0;

	while (x >>= 1)
		++k;

	return k;
}

unsigned long flash_init(void)
{
	unsigned long size;
	int i;

	/* Init: no FLASHes known */
	for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; i++)
		flash_info[i].flash_id = FLASH_UNKNOWN;

	size = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);

	if (flash_info[0].flash_id == FLASH_UNKNOWN)
		printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
			size, size<<20);

	/* Reconfigure CS0 to actual FLASH size */
	*IXP425_EXP_CS0 = (*IXP425_EXP_CS0 & ~0x00003C00) | ((ld(size) - 9) << 10);

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

	/* Environment protection ON by default */
	flash_protect(FLAG_PROTECT_SET,
		      CONFIG_ENV_ADDR,
		      CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
		      &flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);

	/* Redundant environment protection ON by default */
	flash_protect(FLAG_PROTECT_SET,
		      CONFIG_ENV_ADDR_REDUND,
		      CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
		      &flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);

	flash_info[0].size = size;

	return size;
}

#endif /* CONFIG_FLASH_CFI_DRIVER */
Commit	Line	Data
ba94a1bb WD	1	/*
	2	* (C) Copyright 2006
	3	* Stefan Roese, DENX Software Engineering, sr@denx.de.
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
ba94a1bb WD	6	*/
	7
	8	#include <common.h>
	9	#include <asm/arch/ixp425.h>
	10
00b1883a	11	#if !defined(CONFIG_FLASH_CFI_DRIVER)
9d8d5a5b	12
ba94a1bb WD	13	/*
	14	* include common flash code (for esd boards)
	15	*/
	16	#include "../common/flash.c"
	17
	18	/*
	19	* Prototypes
	20	*/
	21	static ulong flash_get_size (vu_long * addr, flash_info_t * info);
	22
	23	static inline ulong ld(ulong x)
	24	{
	25	ulong k = 0;
	26
	27	while (x >>= 1)
	28	++k;
	29
	30	return k;
	31	}
	32
	33	unsigned long flash_init(void)
	34	{
	35	unsigned long size;
	36	int i;
	37
	38	/* Init: no FLASHes known */
6d0f6bcf	39	for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; i++)
ba94a1bb WD	40	flash_info[i].flash_id = FLASH_UNKNOWN;
	41
	42	size = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
	43
	44	if (flash_info[0].flash_id == FLASH_UNKNOWN)
	45	printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
	46	size, size<<20);
	47
	48	/* Reconfigure CS0 to actual FLASH size */
	49	IXP425_EXP_CS0 = (IXP425_EXP_CS0 & ~0x00003C00) \| ((ld(size) - 9) << 10);
	50
	51	/* Monitor protection ON by default */
	52	flash_protect(FLAG_PROTECT_SET,
6d0f6bcf JCPV	53	CONFIG_SYS_MONITOR_BASE, CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
6d0f6bcf JCPV	54	&flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);
ba94a1bb WD	55
	56	/* Environment protection ON by default */
	57	flash_protect(FLAG_PROTECT_SET,
0e8d1586 JCPV	58	CONFIG_ENV_ADDR,
0e8d1586 JCPV	59	CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
6d0f6bcf	60	&flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);
ba94a1bb WD	61
	62	/* Redundant environment protection ON by default */
	63	flash_protect(FLAG_PROTECT_SET,
0e8d1586	64	CONFIG_ENV_ADDR_REDUND,
dfcd7f21	65	CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
6d0f6bcf	66	&flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]);
ba94a1bb WD	67
	68	flash_info[0].size = size;
	69
	70	return size;
	71	}
9d8d5a5b	72
00b1883a	73	#endif /* CONFIG_FLASH_CFI_DRIVER */