mpc837xerdb.c

U-BOOT,著名的Bootloader程序

/*
 * Copyright (C) 2007 Freescale Semiconductor, Inc.
 * Kevin Lam <[e-mail]>
 * Joe D'Abbraccio <joe.d'[e-mail]>
 *
 * 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.
 */

#include <common.h>
#include <i2c.h>
#include <asm/io.h>
#include <asm/fsl_serdes.h>
#include <fdt_support.h>
#include <spd_sdram.h>
#include <vsc7385.h>

#if defined(CFG_DRAM_TEST)
int
testdram(void)
{
	uint *pstart = (uint *) CFG_MEMTEST_START;
	uint *pend = (uint *) CFG_MEMTEST_END;
	uint *p;

	printf("Testing DRAM from 0x%08x to 0x%08x\n",
	       CFG_MEMTEST_START,
	       CFG_MEMTEST_END);

	printf("DRAM test phase 1:\n");
	for (p = pstart; p < pend; p++)
		*p = 0xaaaaaaaa;

	for (p = pstart; p < pend; p++) {
		if (*p != 0xaaaaaaaa) {
			printf("DRAM test fails at: %08x\n", (uint) p);
			return 1;
		}
	}

	printf("DRAM test phase 2:\n");
	for (p = pstart; p < pend; p++)
		*p = 0x55555555;

	for (p = pstart; p < pend; p++) {
		if (*p != 0x55555555) {
			printf("DRAM test fails at: %08x\n", (uint) p);
			return 1;
		}
	}

	printf("DRAM test passed.\n");
	return 0;
}
#endif

#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRC)
void ddr_enable_ecc(unsigned int dram_size);
#endif
int fixed_sdram(void);

phys_size_t initdram(int board_type)
{
	immap_t *im = (immap_t *) CFG_IMMR;
	u32 msize = 0;

	if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
		return -1;

#if defined(CONFIG_SPD_EEPROM)
	msize = spd_sdram();
#else
	msize = fixed_sdram();
#endif

#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRC)
	/* Initialize DDR ECC byte */
	ddr_enable_ecc(msize * 1024 * 1024);
#endif
	/* return total bus DDR size(bytes) */
	return (msize * 1024 * 1024);
}

#if !defined(CONFIG_SPD_EEPROM)
/*************************************************************************
 *  fixed sdram init -- doesn't use serial presence detect.
 ************************************************************************/
int fixed_sdram(void)
{
	immap_t *im = (immap_t *) CFG_IMMR;
	u32 msize = CFG_DDR_SIZE * 1024 * 1024;
	u32 msize_log2 = __ilog2(msize);

	im->sysconf.ddrlaw[0].bar = CFG_DDR_SDRAM_BASE >> 12;
	im->sysconf.ddrlaw[0].ar = LBLAWAR_EN | (msize_log2 - 1);

	im->sysconf.ddrcdr = CFG_DDRCDR_VALUE;
	udelay(50000);

	im->ddr.sdram_clk_cntl = CFG_DDR_SDRAM_CLK_CNTL;
	udelay(1000);

	im->ddr.csbnds[0].csbnds = CFG_DDR_CS0_BNDS;
	im->ddr.cs_config[0] = CFG_DDR_CS0_CONFIG;
	udelay(1000);

	im->ddr.timing_cfg_0 = CFG_DDR_TIMING_0;
	im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1;
	im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2;
	im->ddr.timing_cfg_3 = CFG_DDR_TIMING_3;
	im->ddr.sdram_cfg = CFG_DDR_SDRAM_CFG;
	im->ddr.sdram_cfg2 = CFG_DDR_SDRAM_CFG2;
	im->ddr.sdram_mode = CFG_DDR_MODE;
	im->ddr.sdram_mode2 = CFG_DDR_MODE2;
	im->ddr.sdram_interval = CFG_DDR_INTERVAL;
	sync();
	udelay(1000);

	im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
	udelay(2000);
	return CFG_DDR_SIZE;
}
#endif	/*!CFG_SPD_EEPROM */

int checkboard(void)
{
	puts("Board: Freescale MPC837xERDB\n");
	return 0;
}

int board_early_init_f(void)
{
#ifdef CONFIG_FSL_SERDES
	immap_t *immr = (immap_t *)CFG_IMMR;
	u32 spridr = in_be32(&immr->sysconf.spridr);

	/* we check only part num, and don't look for CPU revisions */
	switch (PARTID_NO_E(spridr)) {
	case SPR_8377:
		fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_SATA,
				 FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
		fsl_setup_serdes(CONFIG_FSL_SERDES2, FSL_SERDES_PROTO_PEX,
				 FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
		break;
	case SPR_8378:
		fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_PEX,
				 FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
		break;
	case SPR_8379:
		fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_SATA,
				 FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
		fsl_setup_serdes(CONFIG_FSL_SERDES2, FSL_SERDES_PROTO_SATA,
				 FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V);
		break;
	default:
		printf("serdes not configured: unknown CPU part number: "
		       "%04x\n", spridr >> 16);
		break;
	}
#endif /* CONFIG_FSL_SERDES */
	return 0;
}

/*
 * Miscellaneous late-boot configurations
 *
 * If a VSC7385 microcode image is present, then upload it.
*/
int misc_init_r(void)
{
	int rc = 0;

#ifdef CONFIG_VSC7385_IMAGE
	if (vsc7385_upload_firmware((void *) CONFIG_VSC7385_IMAGE,
		CONFIG_VSC7385_IMAGE_SIZE)) {
		puts("Failure uploading VSC7385 microcode.\n");
		rc = 1;
	}
#endif

	return rc;
}

#if defined(CONFIG_OF_BOARD_SETUP)

void ft_board_setup(void *blob, bd_t *bd)
{
#ifdef CONFIG_PCI
	ft_pci_setup(blob, bd);
#endif
	ft_cpu_setup(blob, bd);
	fdt_fixup_dr_usb(blob, bd);
}
#endif /* CONFIG_OF_BOARD_SETUP */