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authorwdenk <wdenk>2002-08-26 21:58:50 +0000
committerwdenk <wdenk>2002-08-26 21:58:50 +0000
commit16f217049a70da97bc61eff7a95b4b6313850909 (patch)
tree4c9c0b416828b4215b10d152aac432b449a11f05 /board/ep8260/ep8260.c
parent354bc6feac2cf549c51c2f36e2a374438af4e9c1 (diff)
downloadblackbird-obmc-uboot-16f217049a70da97bc61eff7a95b4b6313850909.tar.gz
blackbird-obmc-uboot-16f217049a70da97bc61eff7a95b4b6313850909.zip
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+/*
+ * (C) Copyright 2001, 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2002
+ * Frank Panno <fpanno@delphintech.com>, Delphin Technology AG
+ *
+ * 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 "ep8260.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 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA30 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA29 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA28 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA27 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA26 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA25 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA24 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA23 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA22 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA21 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA20 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA19 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA18 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA17 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA16 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA15 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA14 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA13 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA12 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA11 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA10 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PA9 */ { 0, 1, 0, 1, 0, 0 }, /* */
+ /* PA8 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* 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 */ { 0, 1, 0, 1, 0, 0 }, /* */
+ /* PB30 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PB29 */ { 0, 1, 1, 1, 0, 0 }, /* */
+ /* PB28 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PB27 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PB26 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PB25 */ { 0, 1, 0, 1, 0, 0 }, /* */
+ /* PB24 */ { 0, 1, 0, 1, 0, 0 }, /* */
+ /* PB23 */ { 0, 1, 0, 1, 0, 0 }, /* */
+ /* PB22 */ { 0, 1, 0, 1, 0, 0 }, /* */
+ /* PB21 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PB20 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PB19 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PB18 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PB17 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII RX_DV */
+ /* PB16 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII RX_ER */
+ /* PB15 */ { 1, 1, 0, 1, 0, 0 }, /* FCC3 MII TX_ER */
+ /* PB14 */ { 1, 1, 0, 1, 0, 0 }, /* FCC3 MII TX_EN */
+ /* PB13 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII COL */
+ /* PB12 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII CRS */
+ /* PB11 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII RxD[3] */
+ /* PB10 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII RxD[2] */
+ /* PB9 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII RxD[1] */
+ /* PB8 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII RxD[0] */
+ /* PB7 */ { 0, 0, 0, 0, 0, 0 }, /* PB7 */
+ /* PB6 */ { 1, 1, 0, 1, 0, 0 }, /* FCC3 MII TxD[1] */
+ /* PB5 */ { 1, 1, 0, 1, 0, 0 }, /* FCC3 MII TxD[2] */
+ /* PB4 */ { 1, 1, 0, 1, 0, 0 }, /* FCC3 MII TxD[3] */
+ /* 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 }, /* */
+ /* PC28 */ { 0, 0, 0, 1, 0, 0 }, /* PC28 */
+ /* PC27 */ { 1, 1, 0, 1, 0, 0 }, /* FCC3 MII TxD[0] */
+ /* 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 }, /* */
+ /* PC22 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PC21 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PC20 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PC19 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PC18 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PC17 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII CLK15 */
+ /* PC16 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII CLK16 */
+ /* PC15 */ { 0, 0, 0, 1, 0, 0 }, /* PC15 */
+ /* PC14 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PC13 */ { 0, 0, 0, 1, 0, 0 }, /* PC13 */
+ /* PC12 */ { 0, 0, 0, 1, 0, 0 }, /* PC12 */
+ /* PC11 */ { 0, 0, 0, 1, 0, 0 }, /* PC11 */
+ /* PC10 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PC9 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PC8 */ { 0, 0, 0, 1, 0, 0 }, /* PC8 */
+ /* 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 }, /* */
+ /* PC1 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ /* PC0 */ { 0, 0, 0, 1, 0, 0 }, /* */
+ },
+
+ /* Port D */
+ { /* conf ppar psor pdir podr pdat */
+ /* PD31 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PD30 */ { 0, 1, 1, 1, 0, 0 }, /* */
+ /* PD29 */ { 0, 1, 0, 1, 0, 0 }, /* */
+ /* PD28 */ { 0, 0, 0, 1, 0, 0 }, /* PD28 */
+ /* PD27 */ { 0, 0, 0, 1, 0, 0 }, /* PD27 */
+ /* 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 }, /* PD23 */
+ /* PD22 */ { 0, 0, 0, 1, 0, 0 }, /* PD22 */
+ /* PD21 */ { 0, 0, 0, 1, 0, 0 }, /* PD21 */
+ /* PD20 */ { 0, 0, 0, 1, 0, 0 }, /* PD20 */
+ /* PD19 */ { 0, 0, 0, 1, 0, 0 }, /* PD19 */
+ /* PD18 */ { 0, 0, 0, 1, 0, 0 }, /* PD19 */
+ /* PD17 */ { 0, 1, 0, 0, 0, 0 }, /* */
+ /* PD16 */ { 0, 1, 0, 1, 0, 0 }, /* */
+ /* PD15 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SDA */
+ /* PD14 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SCL */
+ /* 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 */ { 1, 1, 0, 1, 0, 0 }, /* SMC1 TXD */
+ /* PD8 */ { 1, 1, 0, 0, 0, 0 }, /* SMC1 RXD */
+ /* 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 */ { 0, 0, 0, 1, 0, 1 }, /* PD4 */
+ /* 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 */
+ }
+};
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Setup CS4 to enable the Board Control/Status registers.
+ * Otherwise the smcs won't work.
+*/
+int board_pre_init (void)
+{
+ volatile t_ep_regs *regs = (t_ep_regs*)CFG_REGS_BASE;
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile memctl8260_t *memctl = &immap->im_memctl;
+ memctl->memc_br4 = CFG_BR4_PRELIM;
+ memctl->memc_or4 = CFG_OR4_PRELIM;
+ regs->bcsr1 = 0x62; /* to enable terminal on SMC1 */
+ regs->bcsr2 = 0x30; /* enable NVRAM and writing FLASH */
+ return 0;
+}
+
+void
+reset_phy(void)
+{
+ volatile t_ep_regs *regs = (t_ep_regs*)CFG_REGS_BASE;
+ regs->bcsr4 = 0xC0;
+}
+
+/*
+ * Check Board Identity:
+ * I don' know, how the next board revisions will be coded.
+ * Thats why its a static interpretation ...
+*/
+
+int
+checkboard(void)
+{
+ volatile t_ep_regs *regs = (t_ep_regs*)CFG_REGS_BASE;
+ uint major=0, minor=0;
+ switch (regs->bcsr0) {
+ case 0x02: major = 1; break;
+ case 0x03: major = 1; minor = 1; break;
+ default: break;
+ }
+ printf ("Board: Embedded Planet EP8260, Revision %d.%d\n",
+ major, minor);
+ return 0;
+}
+
+
+/* ------------------------------------------------------------------------- */
+
+
+long int
+initdram(int board_type)
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile memctl8260_t *memctl = &immap->im_memctl;
+ volatile uchar c = 0;
+ volatile uchar *ramaddr = (uchar *)(CFG_SDRAM_BASE) + 0x110;
+/*
+ ulong psdmr = CFG_PSDMR;
+#ifdef CFG_LSDRAM
+ ulong lsdmr = CFG_LSDMR;
+#endif
+*/
+ long size = CFG_SDRAM0_SIZE;
+ int i;
+
+
+/*
+* 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.
+*/
+
+ memctl->memc_psrt = CFG_PSRT;
+ memctl->memc_mptpr = CFG_MPTPR;
+
+ memctl->memc_psdmr = (ulong) CFG_PSDMR | PSDMR_OP_PREA;
+ *ramaddr = c;
+
+ memctl->memc_psdmr = (ulong) CFG_PSDMR | PSDMR_OP_CBRR;
+ for (i = 0; i < 8; i++)
+ *ramaddr = c;
+
+ memctl->memc_psdmr = (ulong) CFG_PSDMR | PSDMR_OP_MRW;
+ *ramaddr = c;
+
+ memctl->memc_psdmr = (ulong) CFG_PSDMR | PSDMR_OP_NORM | PSDMR_RFEN;
+ *ramaddr = c;
+
+#ifndef CFG_RAMBOOT
+#ifdef CFG_LSDRAM
+ size += CFG_SDRAM1_SIZE;
+ ramaddr = (uchar *)(CFG_SDRAM1_BASE) + 0x8c;
+ memctl->memc_lsrt = CFG_LSRT;
+
+ memctl->memc_lsdmr = (ulong) CFG_LSDMR | PSDMR_OP_PREA;
+ *ramaddr = c;
+
+ memctl->memc_lsdmr = (ulong) CFG_LSDMR | PSDMR_OP_CBRR;
+ for (i = 0; i < 8; i++)
+ *ramaddr = c;
+
+ memctl->memc_lsdmr = (ulong) CFG_LSDMR | PSDMR_OP_MRW;
+ *ramaddr = c;
+
+ memctl->memc_lsdmr = (ulong) CFG_LSDMR | PSDMR_OP_NORM | PSDMR_RFEN;
+ *ramaddr = c;
+#endif /* CFG_LSDRAM */
+#endif /* CFG_RAMBOOT */
+ return (size * 1024 * 1024);
+}
+
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