/* * 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 #include "ocotea.h" #include #include #include #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 *) CFG_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(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); /*-------------------------------------------------------------------------+ | 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. *-------------------------------------------------------------------*/ 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; unsigned char *s = getenv ("serial#"); get_sys_info (&sysinfo); printf ("Board: Ocotea - AMCC PPC440GX Evaluation Board"); if (s != NULL) { puts (", serial# "); puts (s); } putc ('\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