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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u-boot/board/amcc/ocotea/ocotea.c

404 lines
14 KiB

/*
* Copyright (C) 2004 PaulReynolds@lhsolutions.com
*
* (C) Copyright 2005
* Stefan Roese, DENX Software Engineering, sr@denx.de.
*
* 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 "ocotea.h"
#include <asm/processor.h>
#include <spd_sdram.h>
#include <asm/ppc4xx-emac.h>
DECLARE_GLOBAL_DATA_PTR;
#define BOOT_SMALL_FLASH 32 /* 00100000 */
#define FLASH_ONBD_N 2 /* 00000010 */
#define FLASH_SRAM_SEL 1 /* 00000001 */
long int fixed_sdram (void);
void fpga_init (void);
int board_early_init_f (void)
{
unsigned long mfr;
unsigned char *fpga_base = (unsigned char *) CONFIG_SYS_FPGA_BASE;
unsigned char switch_status;
unsigned long cs0_base;
unsigned long cs0_size;
unsigned long cs0_twt;
unsigned long cs2_base;
unsigned long cs2_size;
unsigned long cs2_twt;
/*-------------------------------------------------------------------------+
| Initialize EBC CONFIG
+-------------------------------------------------------------------------*/
mtebc(EBC0_CFG, EBC_CFG_LE_UNLOCK |
EBC_CFG_PTD_ENABLE | EBC_CFG_RTC_64PERCLK |
EBC_CFG_ATC_PREVIOUS | EBC_CFG_DTC_PREVIOUS |
EBC_CFG_CTC_PREVIOUS | EBC_CFG_EMC_NONDEFAULT |
EBC_CFG_PME_DISABLE | EBC_CFG_PR_32);
/*-------------------------------------------------------------------------+
| FPGA. Initialize bank 7 with default values.
+-------------------------------------------------------------------------*/
mtebc(PB7AP, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(7)|
EBC_BXAP_BCE_DISABLE|
EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
EBC_BXAP_BEM_WRITEONLY|
EBC_BXAP_PEN_DISABLED);
mtebc(PB7CR, EBC_BXCR_BAS_ENCODE(0x48300000)|
EBC_BXCR_BS_1MB|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);
/* read FPGA base register FPGA_REG0 */
switch_status = *fpga_base;
if (switch_status & 0x40) {
cs0_base = 0xFFE00000;
cs0_size = EBC_BXCR_BS_2MB;
cs0_twt = 8;
cs2_base = 0xFF800000;
cs2_size = EBC_BXCR_BS_4MB;
cs2_twt = 10;
} else {
cs0_base = 0xFFC00000;
cs0_size = EBC_BXCR_BS_4MB;
cs0_twt = 10;
cs2_base = 0xFF800000;
cs2_size = EBC_BXCR_BS_2MB;
cs2_twt = 8;
}
/*-------------------------------------------------------------------------+
| 1 MB FLASH / 1 MB SRAM. Initialize bank 0 with default values.
+-------------------------------------------------------------------------*/
mtebc(PB0AP, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(cs0_twt)|
EBC_BXAP_BCE_DISABLE|
EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
EBC_BXAP_BEM_WRITEONLY|
EBC_BXAP_PEN_DISABLED);
mtebc(PB0CR, EBC_BXCR_BAS_ENCODE(cs0_base)|
cs0_size|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);
/*-------------------------------------------------------------------------+
| 8KB NVRAM/RTC. Initialize bank 1 with default values.
+-------------------------------------------------------------------------*/
mtebc(PB1AP, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(10)|
EBC_BXAP_BCE_DISABLE|
EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
EBC_BXAP_BEM_WRITEONLY|
EBC_BXAP_PEN_DISABLED);
mtebc(PB1CR, EBC_BXCR_BAS_ENCODE(0x48000000)|
EBC_BXCR_BS_1MB|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);
/*-------------------------------------------------------------------------+
| 4 MB FLASH. Initialize bank 2 with default values.
+-------------------------------------------------------------------------*/
mtebc(PB2AP, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(cs2_twt)|
EBC_BXAP_BCE_DISABLE|
EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
EBC_BXAP_BEM_WRITEONLY|
EBC_BXAP_PEN_DISABLED);
mtebc(PB2CR, EBC_BXCR_BAS_ENCODE(cs2_base)|
cs2_size|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);
/*-------------------------------------------------------------------------+
| FPGA. Initialize bank 7 with default values.
+-------------------------------------------------------------------------*/
mtebc(PB7AP, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(7)|
EBC_BXAP_BCE_DISABLE|
EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
EBC_BXAP_BEM_WRITEONLY|
EBC_BXAP_PEN_DISABLED);
mtebc(PB7CR, EBC_BXCR_BAS_ENCODE(0x48300000)|
EBC_BXCR_BS_1MB|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);
/*--------------------------------------------------------------------
* Setup the interrupt controller polarities, triggers, etc.
*-------------------------------------------------------------------*/
/*
* Because of the interrupt handling rework to handle 440GX interrupts
* with the common code, we needed to change names of the UIC registers.
* Here the new relationship:
*
* U-Boot name 440GX name
* -----------------------
* UIC0 UICB0
* UIC1 UIC0
* UIC2 UIC1
* UIC3 UIC2
*/
mtdcr (UIC1SR, 0xffffffff); /* clear all */
mtdcr (UIC1ER, 0x00000000); /* disable all */
mtdcr (UIC1CR, 0x00000009); /* SMI & UIC1 crit are critical */
mtdcr (UIC1PR, 0xfffffe13); /* per ref-board manual */
mtdcr (UIC1TR, 0x01c00008); /* per ref-board manual */
mtdcr (UIC1VR, 0x00000001); /* int31 highest, base=0x000 */
mtdcr (UIC1SR, 0xffffffff); /* clear all */
mtdcr (UIC2SR, 0xffffffff); /* clear all */
mtdcr (UIC2ER, 0x00000000); /* disable all */
mtdcr (UIC2CR, 0x00000000); /* all non-critical */
mtdcr (UIC2PR, 0xffffe0ff); /* per ref-board manual */
mtdcr (UIC2TR, 0x00ffc000); /* per ref-board manual */
mtdcr (UIC2VR, 0x00000001); /* int31 highest, base=0x000 */
mtdcr (UIC2SR, 0xffffffff); /* clear all */
mtdcr (UIC3SR, 0xffffffff); /* clear all */
mtdcr (UIC3ER, 0x00000000); /* disable all */
mtdcr (UIC3CR, 0x00000000); /* all non-critical */
mtdcr (UIC3PR, 0xffffffff); /* per ref-board manual */
mtdcr (UIC3TR, 0x00ff8c0f); /* per ref-board manual */
mtdcr (UIC3VR, 0x00000001); /* int31 highest, base=0x000 */
mtdcr (UIC3SR, 0xffffffff); /* clear all */
mtdcr (UIC0SR, 0xfc000000); /* clear all */
mtdcr (UIC0ER, 0x00000000); /* disable all */
mtdcr (UIC0CR, 0x00000000); /* all non-critical */
mtdcr (UIC0PR, 0xfc000000); /* */
mtdcr (UIC0TR, 0x00000000); /* */
mtdcr (UIC0VR, 0x00000001); /* */
mfsdr (SDR0_MFR, mfr);
mfr &= ~SDR0_MFR_ECS_MASK;
/* mtsdr(SDR0_MFR, mfr); */
fpga_init();
return 0;
}
int checkboard (void)
{
char buf[64];
int i = getenv_f("serial#", buf, sizeof(buf));
printf ("Board: Ocotea - AMCC PPC440GX Evaluation Board");
if (i > 0) {
puts(", serial# ");
puts(buf);
}
putc ('\n');
return (0);
}
phys_size_t initdram (int board_type)
{
long dram_size = 0;
#if defined(CONFIG_SPD_EEPROM)
dram_size = spd_sdram ();
#else
dram_size = fixed_sdram ();
#endif
return dram_size;
}
#if !defined(CONFIG_SPD_EEPROM)
/*************************************************************************
* fixed sdram init -- doesn't use serial presence detect.
*
* Assumes: 128 MB, non-ECC, non-registered
* PLB @ 133 MHz
*
************************************************************************/
long int fixed_sdram (void)
{
uint reg;
/*--------------------------------------------------------------------
* Setup some default
*------------------------------------------------------------------*/
mtsdram (SDRAM0_UABBA, 0x00000000); /* ubba=0 (default) */
mtsdram (SDRAM0_SLIO, 0x00000000); /* rdre=0 wrre=0 rarw=0 */
mtsdram (SDRAM0_DEVOPT, 0x00000000); /* dll=0 ds=0 (normal) */
mtsdram (SDRAM0_WDDCTR, 0x00000000); /* wrcp=0 dcd=0 */
mtsdram (SDRAM0_CLKTR, 0x40000000); /* clkp=1 (90 deg wr) dcdt=0 */
/*--------------------------------------------------------------------
* Setup for board-specific specific mem
*------------------------------------------------------------------*/
/*
* Following for CAS Latency = 2.5 @ 133 MHz PLB
*/
mtsdram (SDRAM0_B0CR, 0x000a4001); /* SDBA=0x000 128MB, Mode 3, enabled */
mtsdram (SDRAM0_TR0, 0x410a4012); /* WR=2 WD=1 CL=2.5 PA=3 CP=4 LD=2 */
/* RA=10 RD=3 */
mtsdram (SDRAM0_TR1, 0x8080082f); /* SS=T2 SL=STAGE 3 CD=1 CT=0x02f */
mtsdram (SDRAM0_RTR, 0x08200000); /* Rate 15.625 ns @ 133 MHz PLB */
mtsdram (SDRAM0_CFG1, 0x00000000); /* Self-refresh exit, disable PM */
udelay (400); /* Delay 200 usecs (min) */
/*--------------------------------------------------------------------
* Enable the controller, then wait for DCEN to complete
*------------------------------------------------------------------*/
mtsdram (SDRAM0_CFG0, 0x86000000); /* DCEN=1, PMUD=1, 64-bit */
for (;;) {
mfsdram (SDRAM0_MCSTS, reg);
if (reg & 0x80000000)
break;
}
return (128 * 1024 * 1024); /* 128 MB */
}
#endif /* !defined(CONFIG_SPD_EEPROM) */
void fpga_init(void)
{
unsigned long group;
unsigned long sdr0_pfc0;
unsigned long sdr0_pfc1;
unsigned long sdr0_cust0;
unsigned long pvr;
mfsdr (SDR0_PFC0, sdr0_pfc0);
mfsdr (SDR0_PFC1, sdr0_pfc1);
group = SDR0_PFC1_EPS_DECODE(sdr0_pfc1);
pvr = get_pvr ();
sdr0_pfc0 = (sdr0_pfc0 & ~SDR0_PFC0_GEIE_MASK) | SDR0_PFC0_GEIE_TRE;
if ( ((pvr == PVR_440GX_RA) || (pvr == PVR_440GX_RB)) && ((group == 4) || (group == 5))) {
sdr0_pfc0 = (sdr0_pfc0 & ~SDR0_PFC0_TRE_MASK) | SDR0_PFC0_TRE_DISABLE;
sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_CTEMS_MASK) | SDR0_PFC1_CTEMS_EMS;
out8(FPGA_REG2, (in8(FPGA_REG2) & ~FPGA_REG2_EXT_INTFACE_MASK) |
FPGA_REG2_EXT_INTFACE_ENABLE);
mtsdr (SDR0_PFC0, sdr0_pfc0);
mtsdr (SDR0_PFC1, sdr0_pfc1);
} else {
sdr0_pfc0 = (sdr0_pfc0 & ~SDR0_PFC0_TRE_MASK) | SDR0_PFC0_TRE_ENABLE;
switch (group)
{
case 0:
case 1:
case 2:
/* CPU trace A */
out8(FPGA_REG2, (in8(FPGA_REG2) & ~FPGA_REG2_EXT_INTFACE_MASK) |
FPGA_REG2_EXT_INTFACE_ENABLE);
sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_CTEMS_MASK) | SDR0_PFC1_CTEMS_EMS;
mtsdr (SDR0_PFC0, sdr0_pfc0);
mtsdr (SDR0_PFC1, sdr0_pfc1);
break;
case 3:
case 4:
case 5:
case 6:
/* CPU trace B - Over EBMI */
sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_CTEMS_MASK) | SDR0_PFC1_CTEMS_CPUTRACE;
mtsdr (SDR0_PFC0, sdr0_pfc0);
mtsdr (SDR0_PFC1, sdr0_pfc1);
out8(FPGA_REG2, (in8(FPGA_REG2) & ~FPGA_REG2_EXT_INTFACE_MASK) |
FPGA_REG2_EXT_INTFACE_DISABLE);
break;
}
}
/* Initialize the ethernet specific functions in the fpga */
mfsdr(SDR0_PFC1, sdr0_pfc1);
mfsdr(SDR0_CUST0, sdr0_cust0);
if ( (SDR0_PFC1_EPS_DECODE(sdr0_pfc1) == 4) &&
((SDR0_CUST0_RGMII2_DECODE(sdr0_cust0) == RGMII_FER_GMII) ||
(SDR0_CUST0_RGMII2_DECODE(sdr0_cust0) == RGMII_FER_TBI)))
{
if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER1)
{
out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK1) |
FPGA_REG3_ENET_GROUP7);
}
else
{
if (SDR0_CUST0_RGMII2_DECODE(sdr0_cust0) == RGMII_FER_GMII)
{
out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK2) |
FPGA_REG3_ENET_GROUP7);
}
else
{
out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK2) |
FPGA_REG3_ENET_GROUP8);
}
}
}
else
{
if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER1)
{
out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK1) |
FPGA_REG3_ENET_ENCODE1(SDR0_PFC1_EPS_DECODE(sdr0_pfc1)));
}
else
{
out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK2) |
FPGA_REG3_ENET_ENCODE2(SDR0_PFC1_EPS_DECODE(sdr0_pfc1)));
}
}
out8(FPGA_REG4, FPGA_REG4_GPHY_MODE10 |
FPGA_REG4_GPHY_MODE100 | FPGA_REG4_GPHY_MODE1000 |
FPGA_REG4_GPHY_FRC_DPLX | FPGA_REG4_CONNECT_PHYS);
/* reset the gigabyte phy if necessary */
if (SDR0_PFC1_EPS_DECODE(sdr0_pfc1) >= 3)
{
if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER1)
{
out8(FPGA_REG3, in8(FPGA_REG3) & ~FPGA_REG3_GIGABIT_RESET_DISABLE);
udelay(10000);
out8(FPGA_REG3, in8(FPGA_REG3) | FPGA_REG3_GIGABIT_RESET_DISABLE);
}
else
{
out8(FPGA_REG2, in8(FPGA_REG2) & ~FPGA_REG2_GIGABIT_RESET_DISABLE);
udelay(10000);
out8(FPGA_REG2, in8(FPGA_REG2) | FPGA_REG2_GIGABIT_RESET_DISABLE);
}
}
/*
* new Ocotea with Rev. F (pass 3) chips has SMII PHY reset
*/
if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER2) {
out8(FPGA_REG2, in8(FPGA_REG2) & ~FPGA_REG2_SMII_RESET_DISABLE);
udelay(10000);
out8(FPGA_REG2, in8(FPGA_REG2) | FPGA_REG2_SMII_RESET_DISABLE);
}
/* Turn off the LED's */
out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_STAT_MASK) |
FPGA_REG3_STAT_LED8_DISAB | FPGA_REG3_STAT_LED4_DISAB |
FPGA_REG3_STAT_LED2_DISAB | FPGA_REG3_STAT_LED1_DISAB);
return;
}