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 */