| /* |
| * (C) Copyright 2001-2004 |
| * Wolfgang Denk, DENX Software Engineering, wd@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 <ioports.h> |
| #include <mpc8260.h> |
| #include <pci.h> |
| |
| /* |
| * I/O Port configuration table |
| * |
| * if conf is 1, then that port pin will be configured at boot time |
| * according to the five values podr/pdir/ppar/psor/pdat for that entry |
| */ |
| |
| const iop_conf_t iop_conf_tab[4][32] = { |
| |
| /* Port A configuration */ |
| { /* conf ppar psor pdir podr pdat */ |
| /* PA31 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 COL */ |
| /* PA30 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 CRS */ |
| /* PA29 */ { 1, 1, 1, 1, 0, 0 }, /* FCC1 TXER */ |
| /* PA28 */ { 1, 1, 1, 1, 0, 0 }, /* FCC1 TXEN */ |
| /* PA27 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 RXDV */ |
| /* PA26 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 RXER */ |
| /* PA25 */ { 0, 0, 0, 1, 0, 0 }, /* PA25 */ |
| /* PA24 */ { 0, 0, 0, 1, 0, 0 }, /* PA24 */ |
| /* PA23 */ { 0, 0, 0, 1, 0, 0 }, /* PA23 */ |
| /* PA22 */ { 0, 0, 0, 1, 0, 0 }, /* PA22 */ |
| /* PA21 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 TXD3 */ |
| /* PA20 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 TXD2 */ |
| /* PA19 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 TXD1 */ |
| /* PA18 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 TXD0 */ |
| /* PA17 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 RXD0 */ |
| /* PA16 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 RXD1*/ |
| /* PA15 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 RXD2 */ |
| /* PA14 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 RXD3 */ |
| /* PA13 */ { 0, 0, 0, 1, 0, 0 }, /* PA13 */ |
| /* PA12 */ { 0, 0, 0, 1, 0, 0 }, /* PA12 */ |
| /* PA11 */ { 0, 0, 0, 1, 0, 0 }, /* PA11 */ |
| /* PA10 */ { 0, 0, 0, 1, 0, 0 }, /* PA10 */ |
| /* PA9 */ { 0, 1, 0, 1, 0, 0 }, /* PA9 */ |
| /* PA8 */ { 0, 1, 0, 0, 0, 0 }, /* PA8 */ |
| /* PA7 */ { 0, 0, 0, 1, 0, 0 }, /* PA7 */ |
| /* PA6 */ { 0, 0, 0, 1, 0, 0 }, /* PA6 */ |
| /* PA5 */ { 0, 0, 0, 1, 0, 0 }, /* PA5 */ |
| /* PA4 */ { 0, 0, 0, 1, 0, 0 }, /* PA4 */ |
| /* PA3 */ { 0, 0, 0, 1, 0, 0 }, /* PA3 */ |
| /* PA2 */ { 0, 0, 0, 1, 0, 0 }, /* PA2 */ |
| /* PA1 */ { 0, 0, 0, 1, 0, 0 }, /* PA1 */ |
| /* PA0 */ { 0, 0, 0, 1, 0, 0 } /* PA0 */ |
| }, |
| |
| /* Port B configuration */ |
| { /* conf ppar psor pdir podr pdat */ |
| /* PB31 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 TX_ER */ |
| /* PB30 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 RX_DV */ |
| /* PB29 */ { 1, 1, 1, 1, 0, 0 }, /* FCC2 TX_EN */ |
| #if defined(CONFIG_ETHER_ON_SCC) && (CONFIG_ETHER_INDEX == 1) |
| #ifdef CONFIG_ETHER_ON_FCC2 |
| #error "SCC1 conflicts with FCC2" |
| #endif |
| /* PB28 */ { 1, 1, 1, 1, 0, 0 }, /* SCC1 TXD */ |
| #else |
| /* PB28 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 RX_ER */ |
| #endif |
| /* PB27 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 COL */ |
| /* PB26 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 CRS */ |
| /* PB25 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 TxD[3] */ |
| /* PB24 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 TxD[2] */ |
| /* PB23 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 TxD[1] */ |
| /* PB22 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 TxD[0] */ |
| /* PB21 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 RxD[0] */ |
| /* PB20 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 RxD[1] */ |
| /* PB19 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 RxD[2] */ |
| /* PB18 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 RxD[3] */ |
| /* PB17 */ { 0, 0, 0, 0, 0, 0 }, /* PB17 */ |
| /* PB16 */ { 0, 0, 0, 0, 0, 0 }, /* PB16 */ |
| /* PB15 */ { 1, 1, 0, 0, 0, 0 }, /* SCC2 RXD */ |
| /* PB14 */ { 1, 1, 0, 0, 0, 0 }, /* SCC3 RXD */ |
| /* PB13 */ { 0, 0, 0, 0, 0, 0 }, /* PB13 */ |
| /* PB12 */ { 0, 0, 0, 0, 0, 0 }, /* PB12 */ |
| /* PB11 */ { 0, 0, 0, 0, 0, 0 }, /* PB11 */ |
| /* PB10 */ { 0, 0, 0, 0, 0, 0 }, /* PB10 */ |
| /* PB9 */ { 0, 0, 0, 0, 0, 0 }, /* PB9 */ |
| /* PB8 */ { 1, 1, 1, 1, 0, 0 }, /* SCC3 TXD */ |
| /* PB7 */ { 0, 0, 0, 0, 0, 0 }, /* PB7 */ |
| /* PB6 */ { 0, 0, 0, 0, 0, 0 }, /* PB6 */ |
| /* PB5 */ { 0, 0, 0, 0, 0, 0 }, /* PB5 */ |
| /* PB4 */ { 0, 0, 0, 0, 0, 0 }, /* PB4 */ |
| /* PB3 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */ |
| /* PB2 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */ |
| /* PB1 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */ |
| /* PB0 */ { 0, 0, 0, 0, 0, 0 } /* pin doesn't exist */ |
| }, |
| |
| /* Port C */ |
| { /* conf ppar psor pdir podr pdat */ |
| /* PC31 */ { 0, 0, 0, 1, 0, 0 }, /* PC31 */ |
| /* PC30 */ { 0, 0, 0, 1, 0, 0 }, /* PC30 */ |
| /* PC29 */ { 0, 1, 1, 0, 0, 0 }, /* SCC1 CTS */ |
| /* PC28 */ { 0, 0, 0, 1, 0, 0 }, /* SCC2 CTS */ |
| /* PC27 */ { 0, 0, 0, 1, 0, 0 }, /* PC27 */ |
| /* PC26 */ { 0, 0, 0, 1, 0, 0 }, /* PC26 */ |
| /* PC25 */ { 0, 0, 0, 1, 0, 0 }, /* PC25 */ |
| /* PC24 */ { 0, 0, 0, 1, 0, 0 }, /* PC24 */ |
| /* PC23 */ { 0, 1, 0, 1, 0, 0 }, /* PC23 */ |
| /* PC22 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 TXCK */ |
| /* PC21 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 RXCK */ |
| /* PC20 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 TXCK(2) */ |
| /* PC19 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 RXCK */ |
| /* PC18 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 TXCK */ |
| /* PC17 */ { 0, 0, 0, 1, 0, 0 }, /* PC17 */ |
| /* PC16 */ { 0, 0, 0, 1, 0, 0 }, /* PC16 */ |
| /* PC15 */ { 1, 1, 0, 1, 0, 0 }, /* SMC2 TXD */ |
| /* PC14 */ { 0, 1, 0, 0, 0, 0 }, /* SCC1 DCD */ |
| /* PC13 */ { 0, 0, 0, 1, 0, 0 }, /* PC13 */ |
| /* PC12 */ { 0, 0, 0, 1, 0, 0 }, /* SCC2 DCD */ |
| /* PC11 */ { 0, 0, 0, 1, 0, 0 }, /* SCC3 CTS */ |
| /* PC10 */ { 0, 0, 0, 1, 0, 0 }, /* SCC3 DCD */ |
| /* PC9 */ { 0, 0, 0, 1, 0, 0 }, /* SCC4 CTS */ |
| /* PC8 */ { 0, 0, 0, 1, 0, 0 }, /* SCC4 DCD */ |
| /* PC7 */ { 0, 0, 0, 1, 0, 0 }, /* PC7 */ |
| /* PC6 */ { 0, 0, 0, 1, 0, 0 }, /* PC6 */ |
| /* PC5 */ { 0, 0, 0, 1, 0, 0 }, /* PC5 */ |
| /* PC4 */ { 0, 0, 0, 1, 0, 0 }, /* PC4 */ |
| /* PC3 */ { 0, 0, 0, 1, 0, 0 }, /* PC3 */ |
| /* PC2 */ { 0, 0, 0, 1, 0, 1 }, /* PC2 */ |
| /* PC1 */ { 0, 0, 0, 1, 0, 0 }, /* PC1 */ |
| /* PC0 */ { 0, 0, 0, 1, 0, 0 }, /* PC0 */ |
| }, |
| |
| /* Port D */ |
| { /* conf ppar psor pdir podr pdat */ |
| /* PD31 */ { 1, 1, 0, 0, 0, 0 }, /* SCC1 RXD */ |
| /* PD30 */ { 0, 1, 1, 1, 0, 0 }, /* PD30 */ |
| /* PD29 */ { 0, 1, 0, 1, 0, 0 }, /* SCC1 RTS */ |
| /* PD28 */ { 0, 0, 0, 1, 0, 0 }, /* PD28 */ |
| /* PD27 */ { 0, 1, 0, 1, 0, 0 }, /* SCC2 RTS */ |
| /* PD26 */ { 0, 0, 0, 1, 0, 0 }, /* PD26 */ |
| /* PD25 */ { 0, 0, 0, 1, 0, 0 }, /* PD25 */ |
| /* PD24 */ { 0, 0, 0, 1, 0, 0 }, /* PD24 */ |
| /* PD23 */ { 0, 0, 0, 1, 0, 0 }, /* SCC3 RTS */ |
| /* PD22 */ { 1, 1, 0, 0, 0, 0 }, /* SCC4 RXD */ |
| /* PD21 */ { 1, 1, 0, 1, 0, 0 }, /* SCC4 TXD */ |
| /* PD20 */ { 0, 0, 1, 1, 0, 0 }, /* SCC4 RTS */ |
| /* PD19 */ { 0, 0, 0, 1, 0, 0 }, /* PD19 */ |
| /* PD18 */ { 0, 0, 0, 1, 0, 0 }, /* PD18 */ |
| /* PD17 */ { 0, 1, 0, 0, 0, 0 }, /* PD17 */ |
| /* PD16 */ { 0, 1, 0, 1, 0, 0 }, /* PD16 */ |
| #if defined(CONFIG_SOFT_I2C) |
| /* PD15 */ { 1, 0, 0, 1, 1, 1 }, /* I2C SDA */ |
| /* PD14 */ { 1, 0, 0, 1, 1, 1 }, /* I2C SCL */ |
| #else |
| #if defined(CONFIG_HARD_I2C) |
| /* PD15 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SDA */ |
| /* PD14 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SCL */ |
| #else /* normal I/O port pins */ |
| /* PD15 */ { 0, 1, 1, 0, 1, 0 }, /* I2C SDA */ |
| /* PD14 */ { 0, 1, 1, 0, 1, 0 }, /* I2C SCL */ |
| #endif |
| #endif |
| /* PD13 */ { 0, 0, 0, 0, 0, 0 }, /* PD13 */ |
| /* PD12 */ { 0, 0, 0, 0, 0, 0 }, /* PD12 */ |
| /* PD11 */ { 0, 0, 0, 0, 0, 0 }, /* PD11 */ |
| /* PD10 */ { 0, 0, 0, 0, 0, 0 }, /* PD10 */ |
| /* PD9 */ { 0, 1, 0, 1, 0, 0 }, /* PD9 */ |
| /* PD8 */ { 0, 1, 0, 0, 0, 0 }, /* PD8 */ |
| /* PD7 */ { 0, 0, 0, 1, 0, 1 }, /* PD7 */ |
| /* PD6 */ { 0, 0, 0, 1, 0, 1 }, /* PD6 */ |
| /* PD5 */ { 0, 0, 0, 1, 0, 1 }, /* PD5 */ |
| /* PD4 */ { 1, 1, 1, 0, 0, 0 }, /* SMC2 RXD */ |
| /* PD3 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */ |
| /* PD2 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */ |
| /* PD1 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */ |
| /* PD0 */ { 0, 0, 0, 0, 0, 0 } /* pin doesn't exist */ |
| } |
| }; |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| /* Check Board Identity: |
| */ |
| int checkboard (void) |
| { |
| puts ("Board: PM828\n"); |
| return 0; |
| } |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| |
| /* Try SDRAM initialization with P/LSDMR=sdmr and ORx=orx |
| * |
| * This routine performs standard 8260 initialization sequence |
| * and calculates the available memory size. It may be called |
| * several times to try different SDRAM configurations on both |
| * 60x and local buses. |
| */ |
| static long int try_init (volatile memctl8260_t * memctl, ulong sdmr, |
| ulong orx, volatile uchar * base) |
| { |
| volatile uchar c = 0xff; |
| volatile ulong cnt, val; |
| volatile ulong *addr; |
| volatile uint *sdmr_ptr; |
| volatile uint *orx_ptr; |
| int i; |
| ulong save[32]; /* to make test non-destructive */ |
| ulong maxsize; |
| |
| /* We must be able to test a location outsize the maximum legal size |
| * to find out THAT we are outside; but this address still has to be |
| * mapped by the controller. That means, that the initial mapping has |
| * to be (at least) twice as large as the maximum expected size. |
| */ |
| maxsize = (1 + (~orx | 0x7fff)) / 2; |
| |
| sdmr_ptr = &memctl->memc_psdmr; |
| orx_ptr = &memctl->memc_or2; |
| |
| *orx_ptr = orx; |
| |
| /* |
| * Quote from 8260 UM (10.4.2 SDRAM Power-On Initialization, 10-35): |
| * |
| * "At system reset, initialization software must set up the |
| * programmable parameters in the memory controller banks registers |
| * (ORx, BRx, P/LSDMR). After all memory parameters are configured, |
| * system software should execute the following initialization sequence |
| * for each SDRAM device. |
| * |
| * 1. Issue a PRECHARGE-ALL-BANKS command |
| * 2. Issue eight CBR REFRESH commands |
| * 3. Issue a MODE-SET command to initialize the mode register |
| * |
| * The initial commands are executed by setting P/LSDMR[OP] and |
| * accessing the SDRAM with a single-byte transaction." |
| * |
| * The appropriate BRx/ORx registers have already been set when we |
| * get here. The SDRAM can be accessed at the address CFG_SDRAM_BASE. |
| */ |
| |
| *sdmr_ptr = sdmr | PSDMR_OP_PREA; |
| *base = c; |
| |
| *sdmr_ptr = sdmr | PSDMR_OP_CBRR; |
| for (i = 0; i < 8; i++) |
| *base = c; |
| |
| *sdmr_ptr = sdmr | PSDMR_OP_MRW; |
| *(base + CFG_MRS_OFFS) = c; /* setting MR on address lines */ |
| |
| *sdmr_ptr = sdmr | PSDMR_OP_NORM | PSDMR_RFEN; |
| *base = c; |
| |
| /* |
| * Check memory range for valid RAM. A simple memory test determines |
| * the actually available RAM size between addresses `base' and |
| * `base + maxsize'. Some (not all) hardware errors are detected: |
| * - short between address lines |
| * - short between data lines |
| */ |
| i = 0; |
| for (cnt = maxsize / sizeof (long); cnt > 0; cnt >>= 1) { |
| addr = (volatile ulong *) base + cnt; /* pointer arith! */ |
| save[i++] = *addr; |
| *addr = ~cnt; |
| } |
| |
| addr = (volatile ulong *) base; |
| save[i] = *addr; |
| *addr = 0; |
| |
| if ((val = *addr) != 0) { |
| *addr = save[i]; |
| return (0); |
| } |
| |
| for (cnt = 1; cnt <= maxsize / sizeof (long); cnt <<= 1) { |
| addr = (volatile ulong *) base + cnt; /* pointer arith! */ |
| val = *addr; |
| *addr = save[--i]; |
| if (val != ~cnt) { |
| /* Write the actual size to ORx |
| */ |
| *orx_ptr = orx | ~(cnt * sizeof (long) - 1); |
| return (cnt * sizeof (long)); |
| } |
| } |
| return (maxsize); |
| } |
| |
| |
| long int initdram (int board_type) |
| { |
| volatile immap_t *immap = (immap_t *) CFG_IMMR; |
| volatile memctl8260_t *memctl = &immap->im_memctl; |
| |
| #ifndef CFG_RAMBOOT |
| ulong size8, size9; |
| #endif |
| ulong psize = 32 * 1024 * 1024; |
| |
| memctl->memc_psrt = CFG_PSRT; |
| memctl->memc_mptpr = CFG_MPTPR; |
| |
| #ifndef CFG_RAMBOOT |
| size8 = try_init (memctl, CFG_PSDMR_8COL, CFG_OR2_8COL, |
| (uchar *) CFG_SDRAM_BASE); |
| size9 = try_init (memctl, CFG_PSDMR_9COL, CFG_OR2_9COL, |
| (uchar *) CFG_SDRAM_BASE); |
| |
| if (size8 < size9) { |
| psize = size9; |
| printf ("(60x:9COL) "); |
| } else { |
| psize = try_init (memctl, CFG_PSDMR_8COL, CFG_OR2_8COL, |
| (uchar *) CFG_SDRAM_BASE); |
| printf ("(60x:8COL) "); |
| } |
| #endif |
| return (psize); |
| } |
| |
| #if defined(CONFIG_CMD_DOC) |
| extern void doc_probe (ulong physadr); |
| void doc_init (void) |
| { |
| doc_probe (CFG_DOC_BASE); |
| } |
| #endif |
| |
| #ifdef CONFIG_PCI |
| struct pci_controller hose; |
| |
| extern void pci_mpc8250_init(struct pci_controller *); |
| |
| void pci_init_board(void) |
| { |
| pci_mpc8250_init(&hose); |
| } |
| #endif |
