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https://github.com/AsahiLinux/u-boot
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* Patch by Anders Larsen, 18 Sep 2003:
allow mkimage to build and run on Cygwin-hosted systems * Patch by Frank Mller, 18 Sep 2003: use bi_intfreq instead of bi_busfreq to compute fec_mii_speed in cpu/mpc8xx/fec.c * Patch by Pantelis Antoniou, 16 Sep 2003: add tool to compute fileds in the PLPRCR register for MPC86x
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wdenk
parent
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commit
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7 changed files with 245 additions and 16 deletions
10
CHANGELOG
10
CHANGELOG
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@ -2,6 +2,16 @@
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Changes for U-Boot 1.0.0:
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======================================================================
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* Patch by Anders Larsen, 18 Sep 2003:
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allow mkimage to build and run on Cygwin-hosted systems
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* Patch by Frank Müller, 18 Sep 2003:
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use bi_intfreq instead of bi_busfreq to compute fec_mii_speed in
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cpu/mpc8xx/fec.c
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* Patch by Pantelis Antoniou, 16 Sep 2003:
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add tool to compute fileds in the PLPRCR register for MPC86x
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* Use IH_TYPE_FILESYSTEM for TRAB "disk" images.
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* Fix build problems under FreeBSD
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@ -348,7 +348,7 @@ static int fec_init(struct eth_device* dev, bd_t * bd)
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* This MDC frequency is equal to system clock / (2 * MII_SPEED).
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* Then MII_SPEED = system_clock / 2 * 2,5 Mhz.
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*/
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fecp->fec_mii_speed = ((bd->bi_busfreq + 4999999) / 5000000) << 1;
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fecp->fec_mii_speed = ((bd->bi_intfreq + 4999999) / 5000000) << 1;
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#if !defined(CONFIG_ICU862) && !defined(CONFIG_IAD210)
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/* Configure all of port D for MII.
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@ -612,7 +612,7 @@ void mii_init (void)
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* This MDC frequency is equal to system clock / (2 * MII_SPEED).
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* Then MII_SPEED = system_clock / 2 * 2,5 Mhz.
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*/
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fecp->fec_mii_speed = ((bd->bi_busfreq + 4999999) / 5000000) << 1;
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fecp->fec_mii_speed = ((bd->bi_intfreq + 4999999) / 5000000) << 1;
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#if !defined(CONFIG_ICU862) && !defined(CONFIG_IAD210)
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/* Configure all of port D for MII.
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@ -43,13 +43,6 @@
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#include <stdint.h>
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#endif
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#ifdef __CYGWIN__
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#include <sys/types.h>
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typedef unsigned long int uint32_t;
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typedef unsigned short uint16_t;
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typedef unsigned char uint8_t;
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#endif /* __CYGWIN__ */
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/*
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* This version doesn't work for 64-bit ABIs - Erik.
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*/
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@ -124,11 +124,6 @@
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#define IH_MAGIC 0x27051956 /* Image Magic Number */
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#define IH_NMLEN 32 /* Image Name Length */
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#ifdef __CYGWIN__
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typedef unsigned long uint32_t;
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typedef unsigned char uint8_t;
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#endif /* __CYGWIN__ */
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/*
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* all data in network byte order (aka natural aka bigendian)
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*/
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@ -30,6 +30,12 @@ BINS += inca-swap-bytes$(SFX)
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OBJS += inca-swap-bytes.o
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endif
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# Don't build by default
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#ifeq ($(ARCH),ppc)
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#BINS += mpc86x_clk$(SFX)
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#OBJS += mpc86x_clk.o
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#endif
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LOGO_H = $(TOPDIR)/include/bmp_logo.h
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ifeq ($(LOGO_BMP),)
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@ -136,6 +142,10 @@ inca-swap-bytes$(SFX): inca-swap-bytes.o
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$(CC) $(CFLAGS) $(HOST_LDFLAGS) -o $@ $^
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$(STRIP) $@
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mpc86x_clk$(SFX): mpc86x_clk.o
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$(CC) $(CFLAGS) $(HOST_LDFLAGS) -o $@ $^
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$(STRIP) $@
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envcrc.o: envcrc.c
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$(CC) -g $(CFLAGS) -c $<
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@ -151,6 +161,9 @@ gen_eth_addr.o: gen_eth_addr.c
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inca-swap-bytes.o: inca-swap-bytes.c
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$(CC) -g $(CFLAGS) -c $<
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mpc86x_clk.o: mpc86x_clk.c
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$(CC) -g $(CFLAGS) -c $<
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subdirs:
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ifeq ($(TOOLSUBDIRS),)
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@:
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@ -268,7 +268,7 @@ NXTARG: ;
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imagefile = *argv;
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if (lflag) {
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ifd = open(imagefile, O_RDONLY);
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ifd = open(imagefile, O_RDONLY|O_BINARY);
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} else {
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ifd = open(imagefile, O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
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}
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@ -502,7 +502,7 @@ copy_file (int ifd, const char *datafile, int pad)
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fprintf (stderr, "Adding Image %s\n", datafile);
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}
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if ((dfd = open(datafile, O_RDONLY)) < 0) {
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if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
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fprintf (stderr, "%s: Can't open %s: %s\n",
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cmdname, datafile, strerror(errno));
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exit (EXIT_FAILURE);
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218
tools/mpc86x_clk.c
Normal file
218
tools/mpc86x_clk.c
Normal file
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@ -0,0 +1,218 @@
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/*
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* (C) Copyright 2003 Intracom S.A.
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* Pantelis Antoniou <panto@intracom.gr>
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*
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* This little program makes an exhaustive search for the
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* correct terms of pdf, mfi, mfn, mfd, s, dbrmo, in PLPRCR.
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* The goal is to produce a gclk2 from a xin input, while respecting
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* all the restrictions on their combination.
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*
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* Generaly you select the first row of the produced table.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#define DPREF_MIN 10000000
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#define DPREF_MAX 32000000
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#define DPGDCK_MAX 320000000
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#define DPGDCK_MIN 160000000
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#define S_MIN 0
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#define S_MAX 2
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#define MFI_MIN 5
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#define MFI_MAX 15
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#define MFN_MIN 0
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#define MFN_MAX 15
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#define MFD_MIN 0
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#define MFD_MAX 31
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#define MF_MIN 5
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#define MF_MAX 15
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#define PDF_MIN 0
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#define PDF_MAX 15
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#define GCLK2_MAX 150000000
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static int calculate (int xin, int target_clock,
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int ppm, int pdf, int mfi, int mfn, int mfd, int s,
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int *dprefp, int *dpgdckp, int *jdbckp,
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int *gclk2p, int *dbrmop)
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{
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unsigned int dpref, dpgdck, jdbck, gclk2, t1, t2, dbrmo;
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/* valid MFI? */
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if (mfi < MFI_MIN)
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return -1;
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/* valid num, denum? */
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if (mfn > 0 && mfn >= mfd)
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return -1;
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dpref = xin / (pdf + 1);
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/* valid dpef? */
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if (dpref < DPREF_MIN || dpref > DPREF_MAX)
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return -1;
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if (mfn == 0) {
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dpgdck = (2 * mfi * xin) / (pdf + 1) ;
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dbrmo = 0;
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} else {
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/* 5 <= mfi + (mfn / mfd + 1) <= 15 */
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t1 = mfd + 1;
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t2 = mfi * t1 + mfn;
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if ( MF_MIN * t1 > t2 || MF_MAX * t1 < t2)
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return -1;
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dpgdck = (unsigned int)(2 * (mfi * mfd + mfi + mfn) *
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(unsigned int)xin) /
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((mfd + 1) * (pdf + 1));
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dbrmo = 10 * mfn < (mfd + 1);
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}
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/* valid dpgclk? */
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if (dpgdck < DPGDCK_MIN || dpgdck > DPGDCK_MAX)
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return -1;
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jdbck = dpgdck >> s;
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gclk2 = jdbck / 2;
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/* valid gclk2 */
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if (gclk2 > GCLK2_MAX)
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return -1;
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t1 = abs(gclk2 - target_clock);
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/* XXX max 1MHz dev. in clock */
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if (t1 > 1000000)
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return -1;
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/* dev within range (XXX gclk2 scaled to avoid overflow) */
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if (t1 * 1000 > (unsigned int)ppm * (gclk2 / 1000))
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return -1;
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*dprefp = dpref;
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*dpgdckp = dpgdck;
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*jdbckp = jdbck;
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*gclk2p = gclk2;
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*dbrmop = dbrmo;
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return gclk2;
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}
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int conf_clock(int xin, int target_clock, int ppm)
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{
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int pdf, s, mfn, mfd, mfi;
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int dpref, dpgdck, jdbck, gclk2, xout, dbrmo;
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int found = 0;
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/* integer multipliers */
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for (pdf = PDF_MIN; pdf <= PDF_MAX; pdf++) {
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for (mfi = MFI_MIN; mfi <= MFI_MAX; mfi++) {
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for (s = 0; s <= S_MAX; s++) {
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xout = calculate(xin, target_clock,
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ppm, pdf, mfi, 0, 0, s,
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&dpref, &dpgdck, &jdbck,
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&gclk2, &dbrmo);
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if (xout < 0)
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continue;
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if (found == 0) {
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printf("pdf mfi mfn mfd s dbrmo dpref dpgdck jdbck gclk2 exact?\n");
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printf("--- --- --- --- - ----- ----- ------ ----- ----- ------\n");
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}
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printf("%3d %3d --- --- %1d %5d %9d %9d %9d %9d%s\n",
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pdf, mfi, s, dbrmo,
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dpref, dpgdck, jdbck, gclk2,
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gclk2 == target_clock ? " YES" : "");
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found++;
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}
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}
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}
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/* fractional multipliers */
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for (pdf = PDF_MIN; pdf <= PDF_MAX; pdf++) {
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for (mfi = MFI_MIN; mfi <= MFI_MAX; mfi++) {
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for (mfn = 1; mfn <= MFN_MAX; mfn++) {
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for (mfd = 1; mfd <= MFD_MAX; mfd++) {
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for (s = 0; s <= S_MAX; s++) {
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xout = calculate(xin, target_clock,
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ppm, pdf, mfi, mfn, mfd, s,
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&dpref, &dpgdck, &jdbck,
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&gclk2, &dbrmo);
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if (xout < 0)
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continue;
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if (found == 0) {
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printf("pdf mfi mfn mfd s dbrmo dpref dpgdck jdbck gclk2 exact?\n");
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printf("--- --- --- --- - ----- ----- ------ ----- ----- ------\n");
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}
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printf("%3d %3d %3d %3d %1d %5d %9d %9d %9d %9d%s\n",
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pdf, mfi, mfn, mfd, s,
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dbrmo, dpref, dpgdck, jdbck, gclk2,
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gclk2 == target_clock ? " YES" : "");
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found++;
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}
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}
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}
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}
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}
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return found;
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}
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int main(int argc, char *argv[])
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{
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int xin, want_gclk2, found, ppm = 100;
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if (argc < 3) {
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fprintf(stderr, "usage: mpc86x_clk <xin> <want_gclk2> [ppm]\n");
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fprintf(stderr, " default ppm is 100\n");
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return 10;
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}
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xin = atoi(argv[1]);
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want_gclk2 = atoi(argv[2]);
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if (argc >= 4)
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ppm = atoi(argv[3]);
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found = conf_clock(xin, want_gclk2, ppm);
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if (found <= 0) {
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fprintf(stderr, "cannot produce gclk2 %d from xin %d\n",
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want_gclk2, xin);
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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