diff options
Diffstat (limited to 'u-boot/board/amcc/ocotea/ocotea.c')
| -rw-r--r-- | u-boot/board/amcc/ocotea/ocotea.c | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/u-boot/board/amcc/ocotea/ocotea.c b/u-boot/board/amcc/ocotea/ocotea.c new file mode 100644 index 0000000..bbb5331 --- /dev/null +++ b/u-boot/board/amcc/ocotea/ocotea.c @@ -0,0 +1,402 @@ +/* + * 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 *s = getenv ("serial#"); + + printf ("Board: Ocotea - AMCC PPC440GX Evaluation Board"); + if (s != NULL) { + puts (", serial# "); + puts (s); + } + 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; +} |