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u-boot/board/ocotea/ocotea.c

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/*
* Copyright (C) 2004 PaulReynolds@lhsolutions.com
*
* 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 <440gx_enet.h>
#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;
/*-------------------------------------------------------------------------+
| Initialize EBC CONFIG
+-------------------------------------------------------------------------*/
mtebc(xbcfg, 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);
/*-------------------------------------------------------------------------+
| 1 MB FLASH / 1 MB SRAM. Initialize bank 0 with default values.
+-------------------------------------------------------------------------*/
mtebc(pb0ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(8)|
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(0xFFE00000)|
EBC_BXCR_BS_2MB|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(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(pb2cr, EBC_BXCR_BAS_ENCODE(0xFF800000)|
EBC_BXCR_BS_4MB|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.
*-------------------------------------------------------------------*/
mtdcr (uic0sr, 0xffffffff); /* clear all */
mtdcr (uic0er, 0x00000000); /* disable all */
mtdcr (uic0cr, 0x00000009); /* SMI & UIC1 crit are critical */
mtdcr (uic0pr, 0xfffffe13); /* per ref-board manual */
mtdcr (uic0tr, 0x01c00008); /* per ref-board manual */
mtdcr (uic0vr, 0x00000001); /* int31 highest, base=0x000 */
mtdcr (uic0sr, 0xffffffff); /* clear all */
mtdcr (uic1sr, 0xffffffff); /* clear all */
mtdcr (uic1er, 0x00000000); /* disable all */
mtdcr (uic1cr, 0x00000000); /* all non-critical */
mtdcr (uic1pr, 0xffffe0ff); /* per ref-board manual */
mtdcr (uic1tr, 0x00ffc000); /* 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, 0xffffffff); /* per ref-board manual */
mtdcr (uic2tr, 0x00ff8c0f); /* per ref-board manual */
mtdcr (uic2vr, 0x00000001); /* int31 highest, base=0x000 */
mtdcr (uic2sr, 0xffffffff); /* clear all */
mtdcr (uicb0sr, 0xfc000000); /* clear all */
mtdcr (uicb0er, 0x00000000); /* disable all */
mtdcr (uicb0cr, 0x00000000); /* all non-critical */
mtdcr (uicb0pr, 0xfc000000); /* */
mtdcr (uicb0tr, 0x00000000); /* */
mtdcr (uicb0vr, 0x00000001); /* */
mfsdr (sdr_mfr, mfr);
mfr &= ~SDR0_MFR_ECS_MASK;
/* mtsdr(sdr_mfr, mfr); */
fpga_init();
return 0;
}
int checkboard (void)
{
sys_info_t sysinfo;
get_sys_info (&sysinfo);
printf ("Board: IBM 440GX Evaluation Board\n");
printf ("\tVCO: %lu MHz\n", sysinfo.freqVCOMhz / 1000000);
printf ("\tCPU: %lu MHz\n", sysinfo.freqProcessor / 1000000);
printf ("\tPLB: %lu MHz\n", sysinfo.freqPLB / 1000000);
printf ("\tOPB: %lu MHz\n", sysinfo.freqOPB / 1000000);
printf ("\tEPB: %lu MHz\n", sysinfo.freqEPB / 1000000);
return (0);
}
long int initdram (int board_type)
{
long dram_size = 0;
#if defined(CONFIG_SPD_EEPROM)
dram_size = spd_sdram (0);
#else
dram_size = fixed_sdram ();
#endif
return dram_size;
}
#if defined(CFG_DRAM_TEST)
int testdram (void)
{
uint *pstart = (uint *) 0x00000000;
uint *pend = (uint *) 0x08000000;
uint *p;
for (p = pstart; p < pend; p++)
*p = 0xaaaaaaaa;
for (p = pstart; p < pend; p++) {
if (*p != 0xaaaaaaaa) {
printf ("SDRAM test fails at: %08x\n", (uint) p);
return 1;
}
}
for (p = pstart; p < pend; p++)
*p = 0x55555555;
for (p = pstart; p < pend; p++) {
if (*p != 0x55555555) {
printf ("SDRAM test fails at: %08x\n", (uint) p);
return 1;
}
}
return 0;
}
#endif
#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 (mem_uabba, 0x00000000); /* ubba=0 (default) */
mtsdram (mem_slio, 0x00000000); /* rdre=0 wrre=0 rarw=0 */
mtsdram (mem_devopt, 0x00000000); /* dll=0 ds=0 (normal) */
mtsdram (mem_wddctr, 0x00000000); /* wrcp=0 dcd=0 */
mtsdram (mem_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 (mem_b0cr, 0x000a4001); /* SDBA=0x000 128MB, Mode 3, enabled */
mtsdram (mem_tr0, 0x410a4012); /* WR=2 WD=1 CL=2.5 PA=3 CP=4 LD=2 */
/* RA=10 RD=3 */
mtsdram (mem_tr1, 0x8080082f); /* SS=T2 SL=STAGE 3 CD=1 CT=0x02f */
mtsdram (mem_rtr, 0x08200000); /* Rate 15.625 ns @ 133 MHz PLB */
mtsdram (mem_cfg1, 0x00000000); /* Self-refresh exit, disable PM */
udelay (400); /* Delay 200 usecs (min) */
/*--------------------------------------------------------------------
* Enable the controller, then wait for DCEN to complete
*------------------------------------------------------------------*/
mtsdram (mem_cfg0, 0x86000000); /* DCEN=1, PMUD=1, 64-bit */
for (;;) {
mfsdram (mem_mcsts, reg);
if (reg & 0x80000000)
break;
}
return (128 * 1024 * 1024); /* 128 MB */
}
#endif /* !defined(CONFIG_SPD_EEPROM) */
/*************************************************************************
* pci_pre_init
*
* This routine is called just prior to registering the hose and gives
* the board the opportunity to check things. Returning a value of zero
* indicates that things are bad & PCI initialization should be aborted.
*
* Different boards may wish to customize the pci controller structure
* (add regions, override default access routines, etc) or perform
* certain pre-initialization actions.
*
************************************************************************/
#if defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT)
int pci_pre_init(struct pci_controller * hose )
{
unsigned long strap;
/*--------------------------------------------------------------------------+
* The ocotea board is always configured as the host & requires the
* PCI arbiter to be enabled.
*--------------------------------------------------------------------------*/
mfsdr(sdr_sdstp1, strap);
if( (strap & SDR0_SDSTP1_PAE_MASK) == 0 ){
printf("PCI: SDR0_STRP1[%08lX] - PCI Arbiter disabled.\n",strap);
return 0;
}
return 1;
}
#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) */
/*************************************************************************
* pci_target_init
*
* The bootstrap configuration provides default settings for the pci
* inbound map (PIM). But the bootstrap config choices are limited and
* may not be sufficient for a given board.
*
************************************************************************/
#if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
void pci_target_init(struct pci_controller * hose )
{
DECLARE_GLOBAL_DATA_PTR;
/*--------------------------------------------------------------------------+
* Disable everything
*--------------------------------------------------------------------------*/
out32r( PCIX0_PIM0SA, 0 ); /* disable */
out32r( PCIX0_PIM1SA, 0 ); /* disable */
out32r( PCIX0_PIM2SA, 0 ); /* disable */
out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */
/*--------------------------------------------------------------------------+
* Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
* options to not support sizes such as 128/256 MB.
*--------------------------------------------------------------------------*/
out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
out32r( PCIX0_PIM0LAH, 0 );
out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1 );
out32r( PCIX0_BAR0, 0 );
/*--------------------------------------------------------------------------+
* Program the board's subsystem id/vendor id
*--------------------------------------------------------------------------*/
out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );
out16r( PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY );
}
#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
/*************************************************************************
* is_pci_host
*
* This routine is called to determine if a pci scan should be
* performed. With various hardware environments (especially cPCI and
* PPMC) it's insufficient to depend on the state of the arbiter enable
* bit in the strap register, or generic host/adapter assumptions.
*
* Rather than hard-code a bad assumption in the general 440 code, the
* 440 pci code requires the board to decide at runtime.
*
* Return 0 for adapter mode, non-zero for host (monarch) mode.
*
*
************************************************************************/
#if defined(CONFIG_PCI)
int is_pci_host(struct pci_controller *hose)
{
/* The ocotea board is always configured as host. */
return(1);
}
#endif /* defined(CONFIG_PCI) */
void fpga_init(void)
{
unsigned long group;
unsigned long sdr0_pfc0;
unsigned long sdr0_pfc1;
unsigned long sdr0_cust0;
unsigned long pvr;
mfsdr (sdr_pfc0, sdr0_pfc0);
mfsdr (sdr_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 (sdr_pfc0, sdr0_pfc0);
mtsdr (sdr_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 (sdr_pfc0, sdr0_pfc0);
mtsdr (sdr_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 (sdr_pfc0, sdr0_pfc0);
mtsdr (sdr_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(sdr_pfc1, sdr0_pfc1);
mfsdr(sdr_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);
}
}
/* 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;
}
#ifdef CONFIG_POST
/*
* Returns 1 if keys pressed to start the power-on long-running tests
* Called from board_init_f().
*/
int post_hotkeys_pressed(void)
{
return (ctrlc());
}
#endif
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