cpu/mpc83xx/speed.c - github/trini/u-boot - Gitiles

 /*
  * (C) Copyright 2000-2002
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
  *
  * 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
  */

 #include <common.h>
 #include <mpc83xx.h>
 #include <command.h>
 #include <asm/processor.h>

 DECLARE_GLOBAL_DATA_PTR;

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

 typedef enum {
 	_unk,
 	_off,
 	_byp,
 	_x8,
 	_x4,
 	_x2,
 	_x1,
 	_1x,
 	_1_5x,
 	_2x,
 	_2_5x,
 	_3x
 } mult_t;

 typedef struct {
 	mult_t core_csb_ratio;
 	mult_t vco_divider;
 } corecnf_t;

 corecnf_t corecnf_tab[] = {
 	{_byp, _byp},		/* 0x00 */
 	{_byp, _byp},		/* 0x01 */
 	{_byp, _byp},		/* 0x02 */
 	{_byp, _byp},		/* 0x03 */
 	{_byp, _byp},		/* 0x04 */
 	{_byp, _byp},		/* 0x05 */
 	{_byp, _byp},		/* 0x06 */
 	{_byp, _byp},		/* 0x07 */
 	{_1x, _x2},		/* 0x08 */
 	{_1x, _x4},		/* 0x09 */
 	{_1x, _x8},		/* 0x0A */
 	{_1x, _x8},		/* 0x0B */
 	{_1_5x, _x2},		/* 0x0C */
 	{_1_5x, _x4},		/* 0x0D */
 	{_1_5x, _x8},		/* 0x0E */
 	{_1_5x, _x8},		/* 0x0F */
 	{_2x, _x2},		/* 0x10 */
 	{_2x, _x4},		/* 0x11 */
 	{_2x, _x8},		/* 0x12 */
 	{_2x, _x8},		/* 0x13 */
 	{_2_5x, _x2},		/* 0x14 */
 	{_2_5x, _x4},		/* 0x15 */
 	{_2_5x, _x8},		/* 0x16 */
 	{_2_5x, _x8},		/* 0x17 */
 	{_3x, _x2},		/* 0x18 */
 	{_3x, _x4},		/* 0x19 */
 	{_3x, _x8},		/* 0x1A */
 	{_3x, _x8},		/* 0x1B */
 };

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

 /*
  *
  */
 int get_clocks(void)
 {
 	volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
 	u32 pci_sync_in;
 	u8 spmf;
 	u8 clkin_div;
 	u32 sccr;
 	u32 corecnf_tab_index;
 	u8 corepll;
 	u32 lcrr;

 	u32 csb_clk;
 #if defined(CONFIG_MPC834x) || defined(CONFIG_MPC831x) || defined(CONFIG_MPC837x)
 	u32 tsec1_clk;
 	u32 tsec2_clk;
 	u32 usbdr_clk;
 #endif
 #ifdef CONFIG_MPC834x
 	u32 usbmph_clk;
 #endif
 	u32 core_clk;
 	u32 i2c1_clk;
 #if !defined(CONFIG_MPC832x)
 	u32 i2c2_clk;
 #endif
 #if defined(CONFIG_MPC8315)
 	u32 tdm_clk;
 #endif
 #if defined(CONFIG_MPC837x)
 	u32 sdhc_clk;
 #endif
 	u32 enc_clk;
 	u32 lbiu_clk;
 	u32 lclk_clk;
 	u32 mem_clk;
 #if defined(CONFIG_MPC8360)
 	u32 mem_sec_clk;
 #endif
 #if defined(CONFIG_MPC8360) || defined(CONFIG_MPC832x)
 	u32 qepmf;
 	u32 qepdf;
 	u32 qe_clk;
 	u32 brg_clk;
 #endif
 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC831x)
 	u32 pciexp1_clk;
 	u32 pciexp2_clk;
 #endif
 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315)
 	u32 sata_clk;
 #endif

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

 	clkin_div = ((im->clk.spmr & SPMR_CKID) >> SPMR_CKID_SHIFT);

 	if (im->reset.rcwh & HRCWH_PCI_HOST) {
 #if defined(CONFIG_83XX_CLKIN)
 		pci_sync_in = CONFIG_83XX_CLKIN / (1 + clkin_div);
 #else
 		pci_sync_in = 0xDEADBEEF;
 #endif
 	} else {
 #if defined(CONFIG_83XX_PCICLK)
 		pci_sync_in = CONFIG_83XX_PCICLK;
 #else
 		pci_sync_in = 0xDEADBEEF;
 #endif
 	}

 	spmf = ((im->reset.rcwl & HRCWL_SPMF) >> HRCWL_SPMF_SHIFT);
 	csb_clk = pci_sync_in * (1 + clkin_div) * spmf;

 	sccr = im->clk.sccr;

 #if defined(CONFIG_MPC834x) || defined(CONFIG_MPC831x) || defined(CONFIG_MPC837x)
 	switch ((sccr & SCCR_TSEC1CM) >> SCCR_TSEC1CM_SHIFT) {
 	case 0:
 		tsec1_clk = 0;
 		break;
 	case 1:
 		tsec1_clk = csb_clk;
 		break;
 	case 2:
 		tsec1_clk = csb_clk / 2;
 		break;
 	case 3:
 		tsec1_clk = csb_clk / 3;
 		break;
 	default:
 		/* unkown SCCR_TSEC1CM value */
 		return -2;
 	}

 	switch ((sccr & SCCR_USBDRCM) >> SCCR_USBDRCM_SHIFT) {
 	case 0:
 		usbdr_clk = 0;
 		break;
 	case 1:
 		usbdr_clk = csb_clk;
 		break;
 	case 2:
 		usbdr_clk = csb_clk / 2;
 		break;
 	case 3:
 		usbdr_clk = csb_clk / 3;
 		break;
 	default:
 		/* unkown SCCR_USBDRCM value */
 		return -3;
 	}
 #endif

 #if defined(CONFIG_MPC834x) || defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315)
 	switch ((sccr & SCCR_TSEC2CM) >> SCCR_TSEC2CM_SHIFT) {
 	case 0:
 		tsec2_clk = 0;
 		break;
 	case 1:
 		tsec2_clk = csb_clk;
 		break;
 	case 2:
 		tsec2_clk = csb_clk / 2;
 		break;
 	case 3:
 		tsec2_clk = csb_clk / 3;
 		break;
 	default:
 		/* unkown SCCR_TSEC2CM value */
 		return -4;
 	}
 #elif defined(CONFIG_MPC8313)
 	tsec2_clk = tsec1_clk;

 	if (!(sccr & SCCR_TSEC1ON))
 		tsec1_clk = 0;
 	if (!(sccr & SCCR_TSEC2ON))
 		tsec2_clk = 0;
 #endif

 #if defined(CONFIG_MPC834x)
 	switch ((sccr & SCCR_USBMPHCM) >> SCCR_USBMPHCM_SHIFT) {
 	case 0:
 		usbmph_clk = 0;
 		break;
 	case 1:
 		usbmph_clk = csb_clk;
 		break;
 	case 2:
 		usbmph_clk = csb_clk / 2;
 		break;
 	case 3:
 		usbmph_clk = csb_clk / 3;
 		break;
 	default:
 		/* unkown SCCR_USBMPHCM value */
 		return -5;
 	}

 	if (usbmph_clk != 0 && usbdr_clk != 0 && usbmph_clk != usbdr_clk) {
 		/* if USB MPH clock is not disabled and
 		 * USB DR clock is not disabled then
 		 * USB MPH & USB DR must have the same rate
 		 */
 		return -6;
 	}
 #endif
 	switch ((sccr & SCCR_ENCCM) >> SCCR_ENCCM_SHIFT) {
 	case 0:
 		enc_clk = 0;
 		break;
 	case 1:
 		enc_clk = csb_clk;
 		break;
 	case 2:
 		enc_clk = csb_clk / 2;
 		break;
 	case 3:
 		enc_clk = csb_clk / 3;
 		break;
 	default:
 		/* unkown SCCR_ENCCM value */
 		return -7;
 	}

 #if defined(CONFIG_MPC837x)
 	switch ((sccr & SCCR_SDHCCM) >> SCCR_SDHCCM_SHIFT) {
 	case 0:
 		sdhc_clk = 0;
 		break;
 	case 1:
 		sdhc_clk = csb_clk;
 		break;
 	case 2:
 		sdhc_clk = csb_clk / 2;
 		break;
 	case 3:
 		sdhc_clk = csb_clk / 3;
 		break;
 	default:
 		/* unkown SCCR_SDHCCM value */
 		return -8;
 	}
 #endif
 #if defined(CONFIG_MPC8315)
 	switch ((sccr & SCCR_TDMCM) >> SCCR_TDMCM_SHIFT) {
 	case 0:
 		tdm_clk = 0;
 		break;
 	case 1:
 		tdm_clk = csb_clk;
 		break;
 	case 2:
 		tdm_clk = csb_clk / 2;
 		break;
 	case 3:
 		tdm_clk = csb_clk / 3;
 		break;
 	default:
 		/* unkown SCCR_TDMCM value */
 		return -8;
 	}
 #endif

 #if defined(CONFIG_MPC834x)
 	i2c1_clk = tsec2_clk;
 #elif defined(CONFIG_MPC8360)
 	i2c1_clk = csb_clk;
 #elif defined(CONFIG_MPC832x)
 	i2c1_clk = enc_clk;
 #elif defined(CONFIG_MPC831x)
 	i2c1_clk = enc_clk;
 #elif defined(CONFIG_MPC837x)
 	i2c1_clk = sdhc_clk;
 #endif
 #if !defined(CONFIG_MPC832x)
 	i2c2_clk = csb_clk; /* i2c-2 clk is equal to csb clk */
 #endif

 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC831x)
 	switch ((sccr & SCCR_PCIEXP1CM) >> SCCR_PCIEXP1CM_SHIFT) {
 	case 0:
 		pciexp1_clk = 0;
 		break;
 	case 1:
 		pciexp1_clk = csb_clk;
 		break;
 	case 2:
 		pciexp1_clk = csb_clk / 2;
 		break;
 	case 3:
 		pciexp1_clk = csb_clk / 3;
 		break;
 	default:
 		/* unkown SCCR_PCIEXP1CM value */
 		return -9;
 	}

 	switch ((sccr & SCCR_PCIEXP2CM) >> SCCR_PCIEXP2CM_SHIFT) {
 	case 0:
 		pciexp2_clk = 0;
 		break;
 	case 1:
 		pciexp2_clk = csb_clk;
 		break;
 	case 2:
 		pciexp2_clk = csb_clk / 2;
 		break;
 	case 3:
 		pciexp2_clk = csb_clk / 3;
 		break;
 	default:
 		/* unkown SCCR_PCIEXP2CM value */
 		return -10;
 	}
 #endif

 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315)
 	switch ((sccr & SCCR_SATA1CM) >> SCCR_SATA1CM_SHIFT) {
 	case 0:
 		sata_clk = 0;
 		break;
 	case 1:
 		sata_clk = csb_clk;
 		break;
 	case 2:
 		sata_clk = csb_clk / 2;
 		break;
 	case 3:
 		sata_clk = csb_clk / 3;
 		break;
 	default:
 		/* unkown SCCR_SATACM value */
 		return -11;
 	}
 #endif

 	lbiu_clk = csb_clk *
 	           (1 + ((im->reset.rcwl & HRCWL_LBIUCM) >> HRCWL_LBIUCM_SHIFT));
 	lcrr = (im->lbus.lcrr & LCRR_CLKDIV) >> LCRR_CLKDIV_SHIFT;
 	switch (lcrr) {
 	case 2:
 	case 4:
 	case 8:
 		lclk_clk = lbiu_clk / lcrr;
 		break;
 	default:
 		/* unknown lcrr */
 		return -12;
 	}

 	mem_clk = csb_clk *
 		  (1 + ((im->reset.rcwl & HRCWL_DDRCM) >> HRCWL_DDRCM_SHIFT));
 	corepll = (im->reset.rcwl & HRCWL_COREPLL) >> HRCWL_COREPLL_SHIFT;
 #if defined(CONFIG_MPC8360)
 	mem_sec_clk = csb_clk * (1 +
 		       ((im->reset.rcwl & HRCWL_LBIUCM) >> HRCWL_LBIUCM_SHIFT));
 #endif

 	corecnf_tab_index = ((corepll & 0x1F) << 2) | ((corepll & 0x60) >> 5);
 	if (corecnf_tab_index > (sizeof(corecnf_tab) / sizeof(corecnf_t))) {
 		/* corecnf_tab_index is too high, possibly worng value */
 		return -11;
 	}
 	switch (corecnf_tab[corecnf_tab_index].core_csb_ratio) {
 	case _byp:
 	case _x1:
 	case _1x:
 		core_clk = csb_clk;
 		break;
 	case _1_5x:
 		core_clk = (3 * csb_clk) / 2;
 		break;
 	case _2x:
 		core_clk = 2 * csb_clk;
 		break;
 	case _2_5x:
 		core_clk = (5 * csb_clk) / 2;
 		break;
 	case _3x:
 		core_clk = 3 * csb_clk;
 		break;
 	default:
 		/* unkown core to csb ratio */
 		return -13;
 	}

 #if defined(CONFIG_MPC8360) || defined(CONFIG_MPC832x)
 	qepmf = (im->reset.rcwl & HRCWL_CEPMF) >> HRCWL_CEPMF_SHIFT;
 	qepdf = (im->reset.rcwl & HRCWL_CEPDF) >> HRCWL_CEPDF_SHIFT;
 	qe_clk = (pci_sync_in * qepmf) / (1 + qepdf);
 	brg_clk = qe_clk / 2;
 #endif

 	gd->csb_clk = csb_clk;
 #if defined(CONFIG_MPC834x) || defined(CONFIG_MPC831x) || defined(CONFIG_MPC837x)
 	gd->tsec1_clk = tsec1_clk;
 	gd->tsec2_clk = tsec2_clk;
 	gd->usbdr_clk = usbdr_clk;
 #endif
 #if defined(CONFIG_MPC834x)
 	gd->usbmph_clk = usbmph_clk;
 #endif
 #if defined(CONFIG_MPC8315)
 	gd->tdm_clk = tdm_clk;
 #endif
 #if defined(CONFIG_MPC837x)
 	gd->sdhc_clk = sdhc_clk;
 #endif
 	gd->core_clk = core_clk;
 	gd->i2c1_clk = i2c1_clk;
 #if !defined(CONFIG_MPC832x)
 	gd->i2c2_clk = i2c2_clk;
 #endif
 	gd->enc_clk = enc_clk;
 	gd->lbiu_clk = lbiu_clk;
 	gd->lclk_clk = lclk_clk;
 	gd->mem_clk = mem_clk;
 #if defined(CONFIG_MPC8360)
 	gd->mem_sec_clk = mem_sec_clk;
 #endif
 #if defined(CONFIG_MPC8360) || defined(CONFIG_MPC832x)
 	gd->qe_clk = qe_clk;
 	gd->brg_clk = brg_clk;
 #endif
 #if defined(CONFIG_MPC837x)
 	gd->pciexp1_clk = pciexp1_clk;
 	gd->pciexp2_clk = pciexp2_clk;
 #endif
 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315)
 	gd->sata_clk = sata_clk;
 #endif
 	gd->pci_clk = pci_sync_in;
 	gd->cpu_clk = gd->core_clk;
 	gd->bus_clk = gd->csb_clk;
 	return 0;

 }

 /********************************************
  * get_bus_freq
  * return system bus freq in Hz
  *********************************************/
 ulong get_bus_freq(ulong dummy)
 {
 	return gd->csb_clk;
 }

 int do_clocks (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 {
 	char buf[32];

 	printf("Clock configuration:\n");
 	printf("  Core:                %-4s MHz\n", strmhz(buf, gd->core_clk));
 	printf("  Coherent System Bus: %-4s MHz\n", strmhz(buf, gd->csb_clk));
 #if defined(CONFIG_MPC8360) || defined(CONFIG_MPC832x)
 	printf("  QE:                  %-4s MHz\n", strmhz(buf, gd->qe_clk));
 	printf("  BRG:                 %-4s MHz\n", strmhz(buf, gd->brg_clk));
 #endif
 	printf("  Local Bus Controller:%-4s MHz\n", strmhz(buf, gd->lbiu_clk));
 	printf("  Local Bus:           %-4s MHz\n", strmhz(buf, gd->lclk_clk));
 	printf("  DDR:                 %-4s MHz\n", strmhz(buf, gd->mem_clk));
 #if defined(CONFIG_MPC8360)
 	printf("  DDR Secondary:       %-4s MHz\n", strmhz(buf, gd->mem_sec_clk));
 #endif
 	printf("  SEC:                 %-4s MHz\n", strmhz(buf, gd->enc_clk));
 	printf("  I2C1:                %-4s MHz\n", strmhz(buf, gd->i2c1_clk));
 #if !defined(CONFIG_MPC832x)
 	printf("  I2C2:                %-4s MHz\n", strmhz(buf, gd->i2c2_clk));
 #endif
 #if defined(CONFIG_MPC8315)
 	printf("  TDM:                 %-4s MHz\n", strmhz(buf, gd->tdm_clk));
 #endif
 #if defined(CONFIG_MPC837x)
 	printf("  SDHC:                %-4s MHz\n", strmhz(buf, gd->sdhc_clk));
 #endif
 #if defined(CONFIG_MPC834x) || defined(CONFIG_MPC831x) || defined(CONFIG_MPC837x)
 	printf("  TSEC1:               %-4s MHz\n", strmhz(buf, gd->tsec1_clk));
 	printf("  TSEC2:               %-4s MHz\n", strmhz(buf, gd->tsec2_clk));
 	printf("  USB DR:              %-4s MHz\n", strmhz(buf, gd->usbdr_clk));
 #endif
 #if defined(CONFIG_MPC834x)
 	printf("  USB MPH:             %-4s MHz\n", strmhz(buf, gd->usbmph_clk));
 #endif
 #if defined(CONFIG_MPC837x)
 	printf("  PCIEXP1:             %-4s MHz\n", strmhz(buf, gd->pciexp1_clk));
 	printf("  PCIEXP2:             %-4s MHz\n", strmhz(buf, gd->pciexp2_clk));
 #endif
 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315)
 	printf("  SATA:                %-4s MHz\n", strmhz(buf, gd->sata_clk));
 #endif
 	return 0;
 }

 U_BOOT_CMD(clocks, 1, 0, do_clocks,
 	"print clock configuration",
 	"    clocks"
 );
	/*
	* (C) Copyright 2000-2002
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*
	* Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
	*
	* 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
	*/

	#include <common.h>
	#include <mpc83xx.h>
	#include <command.h>
	#include <asm/processor.h>

	DECLARE_GLOBAL_DATA_PTR;

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

	typedef enum {
	_unk,
	_off,
	_byp,
	_x8,
	_x4,
	_x2,
	_x1,
	_1x,
	_1_5x,
	_2x,
	_2_5x,
	_3x
	} mult_t;

	typedef struct {
	mult_t core_csb_ratio;
	mult_t vco_divider;
	} corecnf_t;

	corecnf_t corecnf_tab[] = {
	{_byp, _byp}, /* 0x00 */
	{_byp, _byp}, /* 0x01 */
	{_byp, _byp}, /* 0x02 */
	{_byp, _byp}, /* 0x03 */
	{_byp, _byp}, /* 0x04 */
	{_byp, _byp}, /* 0x05 */
	{_byp, _byp}, /* 0x06 */
	{_byp, _byp}, /* 0x07 */
	{_1x, _x2}, /* 0x08 */
	{_1x, _x4}, /* 0x09 */
	{_1x, _x8}, /* 0x0A */
	{_1x, _x8}, /* 0x0B */
	{_1_5x, _x2}, /* 0x0C */
	{_1_5x, _x4}, /* 0x0D */
	{_1_5x, _x8}, /* 0x0E */
	{_1_5x, _x8}, /* 0x0F */
	{_2x, _x2}, /* 0x10 */
	{_2x, _x4}, /* 0x11 */
	{_2x, _x8}, /* 0x12 */
	{_2x, _x8}, /* 0x13 */
	{_2_5x, _x2}, /* 0x14 */
	{_2_5x, _x4}, /* 0x15 */
	{_2_5x, _x8}, /* 0x16 */
	{_2_5x, _x8}, /* 0x17 */
	{_3x, _x2}, /* 0x18 */
	{_3x, _x4}, /* 0x19 */
	{_3x, _x8}, /* 0x1A */
	{_3x, _x8}, /* 0x1B */
	};

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

	/*
	*
	*/
	int get_clocks(void)
	{
	volatile immap_t im = (immap_t ) CONFIG_SYS_IMMR;
	u32 pci_sync_in;
	u8 spmf;
	u8 clkin_div;
	u32 sccr;
	u32 corecnf_tab_index;
	u8 corepll;
	u32 lcrr;

	u32 csb_clk;
	#if defined(CONFIG_MPC834x) \|\| defined(CONFIG_MPC831x) \|\| defined(CONFIG_MPC837x)
	u32 tsec1_clk;
	u32 tsec2_clk;
	u32 usbdr_clk;
	#endif
	#ifdef CONFIG_MPC834x
	u32 usbmph_clk;
	#endif
	u32 core_clk;
	u32 i2c1_clk;
	#if !defined(CONFIG_MPC832x)
	u32 i2c2_clk;
	#endif
	#if defined(CONFIG_MPC8315)
	u32 tdm_clk;
	#endif
	#if defined(CONFIG_MPC837x)
	u32 sdhc_clk;
	#endif
	u32 enc_clk;
	u32 lbiu_clk;
	u32 lclk_clk;
	u32 mem_clk;
	#if defined(CONFIG_MPC8360)
	u32 mem_sec_clk;
	#endif
	#if defined(CONFIG_MPC8360) \|\| defined(CONFIG_MPC832x)
	u32 qepmf;
	u32 qepdf;
	u32 qe_clk;
	u32 brg_clk;
	#endif
	#if defined(CONFIG_MPC837x) \|\| defined(CONFIG_MPC831x)
	u32 pciexp1_clk;
	u32 pciexp2_clk;
	#endif
	#if defined(CONFIG_MPC837x) \|\| defined(CONFIG_MPC8315)
	u32 sata_clk;
	#endif

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

	clkin_div = ((im->clk.spmr & SPMR_CKID) >> SPMR_CKID_SHIFT);

	if (im->reset.rcwh & HRCWH_PCI_HOST) {
	#if defined(CONFIG_83XX_CLKIN)
	pci_sync_in = CONFIG_83XX_CLKIN / (1 + clkin_div);
	#else
	pci_sync_in = 0xDEADBEEF;
	#endif
	} else {
	#if defined(CONFIG_83XX_PCICLK)
	pci_sync_in = CONFIG_83XX_PCICLK;
	#else
	pci_sync_in = 0xDEADBEEF;
	#endif
	}

	spmf = ((im->reset.rcwl & HRCWL_SPMF) >> HRCWL_SPMF_SHIFT);
	csb_clk = pci_sync_in * (1 + clkin_div) * spmf;

	sccr = im->clk.sccr;

	#if defined(CONFIG_MPC834x) \|\| defined(CONFIG_MPC831x) \|\| defined(CONFIG_MPC837x)
	switch ((sccr & SCCR_TSEC1CM) >> SCCR_TSEC1CM_SHIFT) {
	case 0:
	tsec1_clk = 0;
	break;
	case 1:
	tsec1_clk = csb_clk;
	break;
	case 2:
	tsec1_clk = csb_clk / 2;
	break;
	case 3:
	tsec1_clk = csb_clk / 3;
	break;
	default:
	/* unkown SCCR_TSEC1CM value */
	return -2;
	}

	switch ((sccr & SCCR_USBDRCM) >> SCCR_USBDRCM_SHIFT) {
	case 0:
	usbdr_clk = 0;
	break;
	case 1:
	usbdr_clk = csb_clk;
	break;
	case 2:
	usbdr_clk = csb_clk / 2;
	break;
	case 3:
	usbdr_clk = csb_clk / 3;
	break;
	default:
	/* unkown SCCR_USBDRCM value */
	return -3;
	}
	#endif

	#if defined(CONFIG_MPC834x) \|\| defined(CONFIG_MPC837x) \|\| defined(CONFIG_MPC8315)
	switch ((sccr & SCCR_TSEC2CM) >> SCCR_TSEC2CM_SHIFT) {
	case 0:
	tsec2_clk = 0;
	break;
	case 1:
	tsec2_clk = csb_clk;
	break;
	case 2:
	tsec2_clk = csb_clk / 2;
	break;
	case 3:
	tsec2_clk = csb_clk / 3;
	break;
	default:
	/* unkown SCCR_TSEC2CM value */
	return -4;
	}
	#elif defined(CONFIG_MPC8313)
	tsec2_clk = tsec1_clk;

	if (!(sccr & SCCR_TSEC1ON))
	tsec1_clk = 0;
	if (!(sccr & SCCR_TSEC2ON))
	tsec2_clk = 0;
	#endif

	#if defined(CONFIG_MPC834x)
	switch ((sccr & SCCR_USBMPHCM) >> SCCR_USBMPHCM_SHIFT) {
	case 0:
	usbmph_clk = 0;
	break;
	case 1:
	usbmph_clk = csb_clk;
	break;
	case 2:
	usbmph_clk = csb_clk / 2;
	break;
	case 3:
	usbmph_clk = csb_clk / 3;
	break;
	default:
	/* unkown SCCR_USBMPHCM value */
	return -5;
	}

	if (usbmph_clk != 0 && usbdr_clk != 0 && usbmph_clk != usbdr_clk) {
	/* if USB MPH clock is not disabled and
	* USB DR clock is not disabled then
	* USB MPH & USB DR must have the same rate
	*/
	return -6;
	}
	#endif
	switch ((sccr & SCCR_ENCCM) >> SCCR_ENCCM_SHIFT) {
	case 0:
	enc_clk = 0;
	break;
	case 1:
	enc_clk = csb_clk;
	break;
	case 2:
	enc_clk = csb_clk / 2;
	break;
	case 3:
	enc_clk = csb_clk / 3;
	break;
	default:
	/* unkown SCCR_ENCCM value */
	return -7;
	}

	#if defined(CONFIG_MPC837x)
	switch ((sccr & SCCR_SDHCCM) >> SCCR_SDHCCM_SHIFT) {
	case 0:
	sdhc_clk = 0;
	break;
	case 1:
	sdhc_clk = csb_clk;
	break;
	case 2:
	sdhc_clk = csb_clk / 2;
	break;
	case 3:
	sdhc_clk = csb_clk / 3;
	break;
	default:
	/* unkown SCCR_SDHCCM value */
	return -8;
	}
	#endif
	#if defined(CONFIG_MPC8315)
	switch ((sccr & SCCR_TDMCM) >> SCCR_TDMCM_SHIFT) {
	case 0:
	tdm_clk = 0;
	break;
	case 1:
	tdm_clk = csb_clk;
	break;
	case 2:
	tdm_clk = csb_clk / 2;
	break;
	case 3:
	tdm_clk = csb_clk / 3;
	break;
	default:
	/* unkown SCCR_TDMCM value */
	return -8;
	}
	#endif

	#if defined(CONFIG_MPC834x)
	i2c1_clk = tsec2_clk;
	#elif defined(CONFIG_MPC8360)
	i2c1_clk = csb_clk;
	#elif defined(CONFIG_MPC832x)
	i2c1_clk = enc_clk;
	#elif defined(CONFIG_MPC831x)
	i2c1_clk = enc_clk;
	#elif defined(CONFIG_MPC837x)
	i2c1_clk = sdhc_clk;
	#endif
	#if !defined(CONFIG_MPC832x)
	i2c2_clk = csb_clk; /* i2c-2 clk is equal to csb clk */
	#endif

	#if defined(CONFIG_MPC837x) \|\| defined(CONFIG_MPC831x)
	switch ((sccr & SCCR_PCIEXP1CM) >> SCCR_PCIEXP1CM_SHIFT) {
	case 0:
	pciexp1_clk = 0;
	break;
	case 1:
	pciexp1_clk = csb_clk;
	break;
	case 2:
	pciexp1_clk = csb_clk / 2;
	break;
	case 3:
	pciexp1_clk = csb_clk / 3;
	break;
	default:
	/* unkown SCCR_PCIEXP1CM value */
	return -9;
	}

	switch ((sccr & SCCR_PCIEXP2CM) >> SCCR_PCIEXP2CM_SHIFT) {
	case 0:
	pciexp2_clk = 0;
	break;
	case 1:
	pciexp2_clk = csb_clk;
	break;
	case 2:
	pciexp2_clk = csb_clk / 2;
	break;
	case 3:
	pciexp2_clk = csb_clk / 3;
	break;
	default:
	/* unkown SCCR_PCIEXP2CM value */
	return -10;
	}
	#endif

	#if defined(CONFIG_MPC837x) \|\| defined(CONFIG_MPC8315)
	switch ((sccr & SCCR_SATA1CM) >> SCCR_SATA1CM_SHIFT) {
	case 0:
	sata_clk = 0;
	break;
	case 1:
	sata_clk = csb_clk;
	break;
	case 2:
	sata_clk = csb_clk / 2;
	break;
	case 3:
	sata_clk = csb_clk / 3;
	break;
	default:
	/* unkown SCCR_SATACM value */
	return -11;
	}
	#endif

	lbiu_clk = csb_clk *
	(1 + ((im->reset.rcwl & HRCWL_LBIUCM) >> HRCWL_LBIUCM_SHIFT));
	lcrr = (im->lbus.lcrr & LCRR_CLKDIV) >> LCRR_CLKDIV_SHIFT;
	switch (lcrr) {
	case 2:
	case 4:
	case 8:
	lclk_clk = lbiu_clk / lcrr;
	break;
	default:
	/* unknown lcrr */
	return -12;
	}

	mem_clk = csb_clk *
	(1 + ((im->reset.rcwl & HRCWL_DDRCM) >> HRCWL_DDRCM_SHIFT));
	corepll = (im->reset.rcwl & HRCWL_COREPLL) >> HRCWL_COREPLL_SHIFT;
	#if defined(CONFIG_MPC8360)
	mem_sec_clk = csb_clk * (1 +
	((im->reset.rcwl & HRCWL_LBIUCM) >> HRCWL_LBIUCM_SHIFT));
	#endif

	corecnf_tab_index = ((corepll & 0x1F) << 2) \| ((corepll & 0x60) >> 5);
	if (corecnf_tab_index > (sizeof(corecnf_tab) / sizeof(corecnf_t))) {
	/* corecnf_tab_index is too high, possibly worng value */
	return -11;
	}
	switch (corecnf_tab[corecnf_tab_index].core_csb_ratio) {
	case _byp:
	case _x1:
	case _1x:
	core_clk = csb_clk;
	break;
	case _1_5x:
	core_clk = (3 * csb_clk) / 2;
	break;
	case _2x:
	core_clk = 2 * csb_clk;
	break;
	case _2_5x:
	core_clk = (5 * csb_clk) / 2;
	break;
	case _3x:
	core_clk = 3 * csb_clk;
	break;
	default:
	/* unkown core to csb ratio */
	return -13;
	}

	#if defined(CONFIG_MPC8360) \|\| defined(CONFIG_MPC832x)
	qepmf = (im->reset.rcwl & HRCWL_CEPMF) >> HRCWL_CEPMF_SHIFT;
	qepdf = (im->reset.rcwl & HRCWL_CEPDF) >> HRCWL_CEPDF_SHIFT;
	qe_clk = (pci_sync_in * qepmf) / (1 + qepdf);
	brg_clk = qe_clk / 2;
	#endif

	gd->csb_clk = csb_clk;
	#if defined(CONFIG_MPC834x) \|\| defined(CONFIG_MPC831x) \|\| defined(CONFIG_MPC837x)
	gd->tsec1_clk = tsec1_clk;
	gd->tsec2_clk = tsec2_clk;
	gd->usbdr_clk = usbdr_clk;
	#endif
	#if defined(CONFIG_MPC834x)
	gd->usbmph_clk = usbmph_clk;
	#endif
	#if defined(CONFIG_MPC8315)
	gd->tdm_clk = tdm_clk;
	#endif
	#if defined(CONFIG_MPC837x)
	gd->sdhc_clk = sdhc_clk;
	#endif
	gd->core_clk = core_clk;
	gd->i2c1_clk = i2c1_clk;
	#if !defined(CONFIG_MPC832x)
	gd->i2c2_clk = i2c2_clk;
	#endif
	gd->enc_clk = enc_clk;
	gd->lbiu_clk = lbiu_clk;
	gd->lclk_clk = lclk_clk;
	gd->mem_clk = mem_clk;
	#if defined(CONFIG_MPC8360)
	gd->mem_sec_clk = mem_sec_clk;
	#endif
	#if defined(CONFIG_MPC8360) \|\| defined(CONFIG_MPC832x)
	gd->qe_clk = qe_clk;
	gd->brg_clk = brg_clk;
	#endif
	#if defined(CONFIG_MPC837x)
	gd->pciexp1_clk = pciexp1_clk;
	gd->pciexp2_clk = pciexp2_clk;
	#endif
	#if defined(CONFIG_MPC837x) \|\| defined(CONFIG_MPC8315)
	gd->sata_clk = sata_clk;
	#endif
	gd->pci_clk = pci_sync_in;
	gd->cpu_clk = gd->core_clk;
	gd->bus_clk = gd->csb_clk;
	return 0;

	}

	/********************************************
	* get_bus_freq
	* return system bus freq in Hz
	*********************************************/
	ulong get_bus_freq(ulong dummy)
	{
	return gd->csb_clk;
	}

	int do_clocks (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
	{
	char buf[32];

	printf("Clock configuration:\n");
	printf(" Core: %-4s MHz\n", strmhz(buf, gd->core_clk));
	printf(" Coherent System Bus: %-4s MHz\n", strmhz(buf, gd->csb_clk));
	#if defined(CONFIG_MPC8360) \|\| defined(CONFIG_MPC832x)
	printf(" QE: %-4s MHz\n", strmhz(buf, gd->qe_clk));
	printf(" BRG: %-4s MHz\n", strmhz(buf, gd->brg_clk));
	#endif
	printf(" Local Bus Controller:%-4s MHz\n", strmhz(buf, gd->lbiu_clk));
	printf(" Local Bus: %-4s MHz\n", strmhz(buf, gd->lclk_clk));
	printf(" DDR: %-4s MHz\n", strmhz(buf, gd->mem_clk));
	#if defined(CONFIG_MPC8360)
	printf(" DDR Secondary: %-4s MHz\n", strmhz(buf, gd->mem_sec_clk));
	#endif
	printf(" SEC: %-4s MHz\n", strmhz(buf, gd->enc_clk));
	printf(" I2C1: %-4s MHz\n", strmhz(buf, gd->i2c1_clk));
	#if !defined(CONFIG_MPC832x)
	printf(" I2C2: %-4s MHz\n", strmhz(buf, gd->i2c2_clk));
	#endif
	#if defined(CONFIG_MPC8315)
	printf(" TDM: %-4s MHz\n", strmhz(buf, gd->tdm_clk));
	#endif
	#if defined(CONFIG_MPC837x)
	printf(" SDHC: %-4s MHz\n", strmhz(buf, gd->sdhc_clk));
	#endif
	#if defined(CONFIG_MPC834x) \|\| defined(CONFIG_MPC831x) \|\| defined(CONFIG_MPC837x)
	printf(" TSEC1: %-4s MHz\n", strmhz(buf, gd->tsec1_clk));
	printf(" TSEC2: %-4s MHz\n", strmhz(buf, gd->tsec2_clk));
	printf(" USB DR: %-4s MHz\n", strmhz(buf, gd->usbdr_clk));
	#endif
	#if defined(CONFIG_MPC834x)
	printf(" USB MPH: %-4s MHz\n", strmhz(buf, gd->usbmph_clk));
	#endif
	#if defined(CONFIG_MPC837x)
	printf(" PCIEXP1: %-4s MHz\n", strmhz(buf, gd->pciexp1_clk));
	printf(" PCIEXP2: %-4s MHz\n", strmhz(buf, gd->pciexp2_clk));
	#endif
	#if defined(CONFIG_MPC837x) \|\| defined(CONFIG_MPC8315)
	printf(" SATA: %-4s MHz\n", strmhz(buf, gd->sata_clk));
	#endif
	return 0;
	}

	U_BOOT_CMD(clocks, 1, 0, do_clocks,
	"print clock configuration",
	" clocks"
	);