u-boot/board/freescale/m54455evb/m54455evb.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2000-2003
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
 */

#include <common.h>
#include <init.h>
#include <pci.h>
#include <asm/immap.h>
#include <asm/io.h>
#include <linux/delay.h>

DECLARE_GLOBAL_DATA_PTR;

int checkboard(void)
{
	puts("Board: ");
	puts("Freescale M54455 EVB\n");
	return 0;
};

int dram_init(void)
{
	u32 dramsize;
#ifdef CONFIG_CF_SBF
	/*
	 * Serial Boot: The dram is already initialized in start.S
	 * only require to return DRAM size
	 */
	dramsize = CONFIG_SYS_SDRAM_SIZE * 0x100000 >> 1;
#else
	sdramc_t *sdram = (sdramc_t *)(MMAP_SDRAM);
	gpio_t *gpio = (gpio_t *)(MMAP_GPIO);
	u32 i;

	dramsize = CONFIG_SYS_SDRAM_SIZE * 0x100000 >> 1;

	for (i = 0x13; i < 0x20; i++) {
		if (dramsize == (1 << i))
			break;
	}
	i--;

	out_8(&gpio->mscr_sdram, CONFIG_SYS_SDRAM_DRV_STRENGTH);

	out_be32(&sdram->sdcs0, CONFIG_SYS_SDRAM_BASE | i);
	out_be32(&sdram->sdcs1, CONFIG_SYS_SDRAM_BASE1 | i);

	out_be32(&sdram->sdcfg1, CONFIG_SYS_SDRAM_CFG1);
	out_be32(&sdram->sdcfg2, CONFIG_SYS_SDRAM_CFG2);

	/* Issue PALL */
	out_be32(&sdram->sdcr, CONFIG_SYS_SDRAM_CTRL | 2);

	/* Issue LEMR */
	out_be32(&sdram->sdmr, CONFIG_SYS_SDRAM_EMOD | 0x408);
	out_be32(&sdram->sdmr, CONFIG_SYS_SDRAM_MODE | 0x300);

	udelay(500);

	/* Issue PALL */
	out_be32(&sdram->sdcr, CONFIG_SYS_SDRAM_CTRL | 2);

	/* Perform two refresh cycles */
	out_be32(&sdram->sdcr, CONFIG_SYS_SDRAM_CTRL | 4);
	out_be32(&sdram->sdcr, CONFIG_SYS_SDRAM_CTRL | 4);

	out_be32(&sdram->sdmr, CONFIG_SYS_SDRAM_MODE | 0x200);

	out_be32(&sdram->sdcr,
		(CONFIG_SYS_SDRAM_CTRL & ~0x80000000) | 0x10000c00);

	udelay(100);
#endif
	gd->ram_size = dramsize << 1;

	return 0;
};

int testdram(void)
{
	/* TODO: XXX XXX XXX */
	printf("DRAM test not implemented!\n");

	return (0);
}

#if defined(CONFIG_IDE)
#include <ata.h>

int ide_preinit(void)
{
	gpio_t *gpio = (gpio_t *) MMAP_GPIO;
	u32 tmp;

	tmp = (in_8(&gpio->par_fec) & GPIO_PAR_FEC_FEC1_UNMASK) | 0x10;
	setbits_8(&gpio->par_fec, tmp);
	tmp = ((in_be16(&gpio->par_feci2c) & 0xf0ff) |
		(GPIO_PAR_FECI2C_MDC1_ATA_DIOR | GPIO_PAR_FECI2C_MDIO1_ATA_DIOW));
	setbits_be16(&gpio->par_feci2c, tmp);

	setbits_be16(&gpio->par_ata,
		GPIO_PAR_ATA_BUFEN | GPIO_PAR_ATA_CS1 | GPIO_PAR_ATA_CS0 |
		GPIO_PAR_ATA_DA2 | GPIO_PAR_ATA_DA1 | GPIO_PAR_ATA_DA0 |
		GPIO_PAR_ATA_RESET_RESET | GPIO_PAR_ATA_DMARQ_DMARQ |
		GPIO_PAR_ATA_IORDY_IORDY);
	setbits_be16(&gpio->par_pci,
		GPIO_PAR_PCI_GNT3_ATA_DMACK | GPIO_PAR_PCI_REQ3_ATA_INTRQ);

	return (0);
}

void ide_set_reset(int idereset)
{
	atac_t *ata = (atac_t *) MMAP_ATA;
	long period;
	/*  t1,  t2,  t3,  t4,  t5,  t6,  t9, tRD,  tA */
	int piotms[5][9] = {
		{70, 165, 60, 30, 50, 5, 20, 0, 35},	/* PIO 0 */
		{50, 125, 45, 20, 35, 5, 15, 0, 35},	/* PIO 1 */
		{30, 100, 30, 15, 20, 5, 10, 0, 35},	/* PIO 2 */
		{30, 80, 30, 10, 20, 5, 10, 0, 35},	/* PIO 3 */
		{25, 70, 20, 10, 20, 5, 10, 0, 35}
	};			/* PIO 4 */

	if (idereset) {
		/* control reset */
		out_8(&ata->cr, 0);
		udelay(10000);
	} else {
#define CALC_TIMING(t) (t + period - 1) / period
		period = 1000000000 / gd->bus_clk;	/* period in ns */

		/*ata->ton = CALC_TIMING (180); */
		out_8(&ata->t1, CALC_TIMING(piotms[2][0]));
		out_8(&ata->t2w, CALC_TIMING(piotms[2][1]));
		out_8(&ata->t2r, CALC_TIMING(piotms[2][1]));
		out_8(&ata->ta, CALC_TIMING(piotms[2][8]));
		out_8(&ata->trd, CALC_TIMING(piotms[2][7]));
		out_8(&ata->t4, CALC_TIMING(piotms[2][3]));
		out_8(&ata->t9, CALC_TIMING(piotms[2][6]));

		/* IORDY enable */
		out_8(&ata->cr, 0x40);
		udelay(200000);
		/* IORDY enable */
		setbits_8(&ata->cr, 0x01);
	}
}
#endif

#if defined(CONFIG_PCI)
/*
 * Initialize PCI devices, report devices found.
 */
static struct pci_controller hose;
extern void pci_mcf5445x_init(struct pci_controller *hose);

void pci_init_board(void)
{
	pci_mcf5445x_init(&hose);
}
#endif				/* CONFIG_PCI */

#if defined(CONFIG_FLASH_CFI_LEGACY)
#include <flash.h>
ulong board_flash_get_legacy (ulong base, int banknum, flash_info_t * info)
{
	int sect[] = CONFIG_SYS_ATMEL_SECT;
	int sectsz[] = CONFIG_SYS_ATMEL_SECTSZ;
	int i, j, k;

	if (base != CONFIG_SYS_ATMEL_BASE)
		return 0;

	info->flash_id          = 0x01000000;
	info->portwidth         = 1;
	info->chipwidth         = 1;
	info->buffer_size       = 1;
	info->erase_blk_tout    = 16384;
	info->write_tout        = 2;
	info->buffer_write_tout = 5;
	info->vendor            = 0xFFF0; /* CFI_CMDSET_AMD_LEGACY */
	info->cmd_reset         = 0x00F0;
	info->interface         = FLASH_CFI_X8;
	info->legacy_unlock     = 0;
	info->manufacturer_id   = (u16) ATM_MANUFACT;
	info->device_id         = ATM_ID_LV040;
	info->device_id2        = 0;

	info->ext_addr          = 0;
	info->cfi_version       = 0x3133;
	info->cfi_offset        = 0x0000;
	info->addr_unlock1      = 0x00000555;
	info->addr_unlock2      = 0x000002AA;
	info->name              = "CFI conformant";

	info->size              = 0;
	info->sector_count      = CONFIG_SYS_ATMEL_TOTALSECT;
	info->start[0] = base;
	for (k = 0, i = 0; i < CONFIG_SYS_ATMEL_REGION; i++) {
		info->size += sect[i] * sectsz[i];

		for (j = 0; j < sect[i]; j++, k++) {
			info->start[k + 1] = info->start[k] + sectsz[i];
			info->protect[k] = 0;
		}
	}

	return 1;
}
#endif				/* CONFIG_SYS_FLASH_CFI */