upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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366 lines
9.8 KiB
366 lines
9.8 KiB
/*-----------------------------------------------------------------------------+
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| This source code is dual-licensed. You may use it under the terms of the
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| GNU General Public License version 2, or under the license below.
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| This source code has been made available to you by IBM on an AS-IS
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| basis. Anyone receiving this source is licensed under IBM
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| copyrights to use it in any way he or she deems fit, including
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| copying it, modifying it, compiling it, and redistributing it either
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| with or without modifications. No license under IBM patents or
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| patent applications is to be implied by the copyright license.
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| Any user of this software should understand that IBM cannot provide
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| technical support for this software and will not be responsible for
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| any consequences resulting from the use of this software.
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| Any person who transfers this source code or any derivative work
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| must include the IBM copyright notice, this paragraph, and the
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| preceding two paragraphs in the transferred software.
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| COPYRIGHT I B M CORPORATION 1995
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| LICENSED MATERIAL - PROGRAM PROPERTY OF I B M
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+-----------------------------------------------------------------------------*/
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/*-----------------------------------------------------------------------------+
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| File Name: miiphy.c
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| Function: This module has utilities for accessing the MII PHY through
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| the EMAC3 macro.
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| Author: Mark Wisner
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+-----------------------------------------------------------------------------*/
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/* define DEBUG for debugging output (obviously ;-)) */
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#if 0
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#define DEBUG
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#endif
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#include <common.h>
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#include <asm/processor.h>
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#include <asm/io.h>
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#include <ppc_asm.tmpl>
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#include <commproc.h>
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#include <asm/ppc4xx-emac.h>
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#include <asm/ppc4xx-mal.h>
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#include <miiphy.h>
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#if !defined(CONFIG_PHY_CLK_FREQ)
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#define CONFIG_PHY_CLK_FREQ 0
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#endif
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/***********************************************************/
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/* Dump out to the screen PHY regs */
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/***********************************************************/
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void miiphy_dump (char *devname, unsigned char addr)
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{
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unsigned long i;
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unsigned short data;
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for (i = 0; i < 0x1A; i++) {
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if (miiphy_read (devname, addr, i, &data)) {
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printf ("read error for reg %lx\n", i);
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return;
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}
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printf ("Phy reg %lx ==> %4x\n", i, data);
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/* jump to the next set of regs */
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if (i == 0x07)
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i = 0x0f;
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} /* end for loop */
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} /* end dump */
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/***********************************************************/
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/* (Re)start autonegotiation */
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/***********************************************************/
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int phy_setup_aneg (char *devname, unsigned char addr)
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{
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u16 bmcr;
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#if defined(CONFIG_PHY_DYNAMIC_ANEG)
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/*
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* Set up advertisement based on capablilities reported by the PHY.
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* This should work for both copper and fiber.
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*/
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u16 bmsr;
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#if defined(CONFIG_PHY_GIGE)
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u16 exsr = 0x0000;
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#endif
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miiphy_read (devname, addr, MII_BMSR, &bmsr);
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#if defined(CONFIG_PHY_GIGE)
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if (bmsr & BMSR_ESTATEN)
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miiphy_read (devname, addr, MII_ESTATUS, &exsr);
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if (exsr & (ESTATUS_1000XF | ESTATUS_1000XH)) {
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/* 1000BASE-X */
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u16 anar = 0x0000;
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if (exsr & ESTATUS_1000XF)
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anar |= ADVERTISE_1000XFULL;
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if (exsr & ESTATUS_1000XH)
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anar |= ADVERTISE_1000XHALF;
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miiphy_write (devname, addr, MII_ADVERTISE, anar);
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} else
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#endif
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{
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u16 anar, btcr;
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miiphy_read (devname, addr, MII_ADVERTISE, &anar);
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anar &= ~(0x5000 | LPA_100BASE4 | LPA_100FULL |
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LPA_100HALF | LPA_10FULL | LPA_10HALF);
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miiphy_read (devname, addr, MII_CTRL1000, &btcr);
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btcr &= ~(0x00FF | PHY_1000BTCR_1000FD | PHY_1000BTCR_1000HD);
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if (bmsr & BMSR_100BASE4)
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anar |= LPA_100BASE4;
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if (bmsr & BMSR_100FULL)
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anar |= LPA_100FULL;
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if (bmsr & BMSR_100HALF)
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anar |= LPA_100HALF;
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if (bmsr & BMSR_10FULL)
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anar |= LPA_10FULL;
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if (bmsr & BMSR_10HALF)
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anar |= LPA_10HALF;
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miiphy_write (devname, addr, MII_ADVERTISE, anar);
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#if defined(CONFIG_PHY_GIGE)
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if (exsr & ESTATUS_1000_TFULL)
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btcr |= PHY_1000BTCR_1000FD;
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if (exsr & ESTATUS_1000_THALF)
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btcr |= PHY_1000BTCR_1000HD;
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miiphy_write (devname, addr, MII_CTRL1000, btcr);
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#endif
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}
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#else /* defined(CONFIG_PHY_DYNAMIC_ANEG) */
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/*
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* Set up standard advertisement
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*/
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u16 adv;
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miiphy_read (devname, addr, MII_ADVERTISE, &adv);
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adv |= (LPA_LPACK | LPA_100FULL | LPA_100HALF |
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LPA_10FULL | LPA_10HALF);
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miiphy_write (devname, addr, MII_ADVERTISE, adv);
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miiphy_read (devname, addr, MII_CTRL1000, &adv);
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adv |= (0x0300);
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miiphy_write (devname, addr, MII_CTRL1000, adv);
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#endif /* defined(CONFIG_PHY_DYNAMIC_ANEG) */
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/* Start/Restart aneg */
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miiphy_read (devname, addr, MII_BMCR, &bmcr);
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bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
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miiphy_write (devname, addr, MII_BMCR, bmcr);
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return 0;
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}
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/***********************************************************/
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/* read a phy reg and return the value with a rc */
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/***********************************************************/
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/* AMCC_TODO:
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* Find out of the choice for the emac for MDIO is from the bridges,
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* i.e. ZMII or RGMII as approporiate. If the bridges are not used
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* to determine the emac for MDIO, then is the SDR0_ETH_CFG[MDIO_SEL]
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* used? If so, then this routine below does not apply to the 460EX/GT.
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*
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* sr: Currently on 460EX only EMAC0 works with MDIO, so we always
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* return EMAC0 offset here
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* vg: For 460EX/460GT if internal GPCS PHY address is specified
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* return appropriate EMAC offset
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*/
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unsigned int miiphy_getemac_offset(u8 addr)
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{
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#if (defined(CONFIG_440) && \
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!defined(CONFIG_440SP) && !defined(CONFIG_440SPE) && \
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!defined(CONFIG_460EX) && !defined(CONFIG_460GT)) && \
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defined(CONFIG_NET_MULTI)
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unsigned long zmii;
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unsigned long eoffset;
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/* Need to find out which mdi port we're using */
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zmii = in_be32((void *)ZMII0_FER);
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if (zmii & (ZMII_FER_MDI << ZMII_FER_V (0)))
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/* using port 0 */
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eoffset = 0;
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else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (1)))
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/* using port 1 */
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eoffset = 0x100;
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else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (2)))
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/* using port 2 */
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eoffset = 0x400;
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else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (3)))
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/* using port 3 */
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eoffset = 0x600;
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else {
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/* None of the mdi ports are enabled! */
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/* enable port 0 */
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zmii |= ZMII_FER_MDI << ZMII_FER_V (0);
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out_be32((void *)ZMII0_FER, zmii);
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eoffset = 0;
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/* need to soft reset port 0 */
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zmii = in_be32((void *)EMAC0_MR0);
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zmii |= EMAC_MR0_SRST;
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out_be32((void *)EMAC0_MR0, zmii);
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}
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return (eoffset);
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#else
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#if defined(CONFIG_NET_MULTI) && defined(CONFIG_405EX)
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unsigned long rgmii;
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int devnum = 1;
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rgmii = in_be32((void *)RGMII_FER);
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if (rgmii & (1 << (19 - devnum)))
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return 0x100;
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#endif
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#if defined(CONFIG_460EX) || defined(CONFIG_460GT)
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u32 eoffset = 0;
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switch (addr) {
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#if defined(CONFIG_HAS_ETH1) && defined(CONFIG_GPCS_PHY1_ADDR)
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case CONFIG_GPCS_PHY1_ADDR:
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if (addr == EMAC_MR1_IPPA_GET(in_be32((void *)EMAC0_MR1 + 0x100)))
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eoffset = 0x100;
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break;
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#endif
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#if defined(CONFIG_HAS_ETH2) && defined(CONFIG_GPCS_PHY2_ADDR)
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case CONFIG_GPCS_PHY2_ADDR:
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if (addr == EMAC_MR1_IPPA_GET(in_be32((void *)EMAC0_MR1 + 0x300)))
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eoffset = 0x300;
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break;
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#endif
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#if defined(CONFIG_HAS_ETH3) && defined(CONFIG_GPCS_PHY3_ADDR)
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case CONFIG_GPCS_PHY3_ADDR:
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if (addr == EMAC_MR1_IPPA_GET(in_be32((void *)EMAC0_MR1 + 0x400)))
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eoffset = 0x400;
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break;
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#endif
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default:
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eoffset = 0;
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break;
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}
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return eoffset;
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#endif
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return 0;
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#endif
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}
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static int emac_miiphy_wait(u32 emac_reg)
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{
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u32 sta_reg;
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int i;
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/* wait for completion */
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i = 0;
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do {
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sta_reg = in_be32((void *)EMAC0_STACR + emac_reg);
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if (i++ > 5) {
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debug("%s [%d]: Timeout! EMAC0_STACR=0x%0x\n", __func__,
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__LINE__, sta_reg);
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return -1;
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}
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udelay(10);
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} while ((sta_reg & EMAC_STACR_OC) == EMAC_STACR_OC_MASK);
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return 0;
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}
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static int emac_miiphy_command(u8 addr, u8 reg, int cmd, u16 value)
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{
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u32 emac_reg;
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u32 sta_reg;
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emac_reg = miiphy_getemac_offset(addr);
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/* wait for completion */
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if (emac_miiphy_wait(emac_reg) != 0)
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return -1;
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sta_reg = reg; /* reg address */
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/* set clock (50MHz) and read flags */
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#if defined(CONFIG_440GX) || defined(CONFIG_440SPE) || \
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defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
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defined(CONFIG_460EX) || defined(CONFIG_460GT) || \
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defined(CONFIG_405EX)
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#if defined(CONFIG_IBM_EMAC4_V4) /* EMAC4 V4 changed bit setting */
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sta_reg = (sta_reg & ~EMAC_STACR_OP_MASK) | cmd;
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#else
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sta_reg |= cmd;
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#endif
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#else
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sta_reg = (sta_reg | cmd) & ~EMAC_STACR_CLK_100MHZ;
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#endif
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/* Some boards (mainly 405EP based) define the PHY clock freqency fixed */
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sta_reg = sta_reg | CONFIG_PHY_CLK_FREQ;
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sta_reg = sta_reg | ((u32)addr << 5); /* Phy address */
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sta_reg = sta_reg | EMAC_STACR_OC_MASK; /* new IBM emac v4 */
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if (cmd == EMAC_STACR_WRITE)
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memcpy(&sta_reg, &value, 2); /* put in data */
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out_be32((void *)EMAC0_STACR + emac_reg, sta_reg);
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debug("%s [%d]: sta_reg=%08x\n", __func__, __LINE__, sta_reg);
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/* wait for completion */
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if (emac_miiphy_wait(emac_reg) != 0)
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return -1;
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debug("%s [%d]: sta_reg=%08x\n", __func__, __LINE__, sta_reg);
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if ((sta_reg & EMAC_STACR_PHYE) != 0)
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return -1;
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return 0;
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}
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int emac4xx_miiphy_read (const char *devname, unsigned char addr, unsigned char reg,
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unsigned short *value)
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{
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unsigned long sta_reg;
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unsigned long emac_reg;
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emac_reg = miiphy_getemac_offset(addr);
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if (emac_miiphy_command(addr, reg, EMAC_STACR_READ, 0) != 0)
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return -1;
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sta_reg = in_be32((void *)EMAC0_STACR + emac_reg);
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*value = sta_reg >> 16;
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return 0;
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}
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/***********************************************************/
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/* write a phy reg and return the value with a rc */
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/***********************************************************/
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int emac4xx_miiphy_write (const char *devname, unsigned char addr, unsigned char reg,
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unsigned short value)
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{
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return emac_miiphy_command(addr, reg, EMAC_STACR_WRITE, value);
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}
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