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Diffstat (limited to 'board/sbc8560/sbc8560.c')
-rw-r--r--board/sbc8560/sbc8560.c449
1 files changed, 449 insertions, 0 deletions
diff --git a/board/sbc8560/sbc8560.c b/board/sbc8560/sbc8560.c
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+++ b/board/sbc8560/sbc8560.c
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+/*
+ * (C) Copyright 2003,Motorola Inc.
+ * Xianghua Xiao, (X.Xiao@motorola.com)
+ *
+ * (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.com>
+ *
+ * (C) Copyright 2004 Wind River Systems Inc <www.windriver.com>.
+ * Added support for Wind River SBC8560 board
+ *
+ * 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
+ */
+
+
+extern long int spd_sdram (void);
+
+#include <common.h>
+#include <asm/processor.h>
+#include <asm/immap_85xx.h>
+#include <ioports.h>
+#include <spd.h>
+#include <miiphy.h>
+
+long int fixed_sdram (void);
+
+/*
+ * 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, 1, 0, 1, 0, 0 }, /* FCC1 TxENB */
+ /* PA30 */ { 0, 1, 0, 0, 0, 0 }, /* FCC1 TxClav */
+ /* PA29 */ { 0, 1, 0, 1, 0, 0 }, /* FCC1 TxSOC */
+ /* PA28 */ { 0, 1, 0, 1, 0, 0 }, /* FCC1 RxENB */
+ /* PA27 */ { 0, 1, 0, 0, 0, 0 }, /* FCC1 RxSOC */
+ /* PA26 */ { 0, 1, 0, 0, 0, 0 }, /* FCC1 RxClav */
+ /* PA25 */ { 0, 1, 0, 1, 0, 0 }, /* FCC1 ATMTXD[0] */
+ /* PA24 */ { 0, 1, 0, 1, 0, 0 }, /* FCC1 ATMTXD[1] */
+ /* PA23 */ { 0, 1, 0, 1, 0, 0 }, /* FCC1 ATMTXD[2] */
+ /* PA22 */ { 0, 1, 0, 1, 0, 0 }, /* FCC1 ATMTXD[3] */
+ /* PA21 */ { 0, 1, 0, 1, 0, 0 }, /* FCC1 ATMTXD[4] */
+ /* PA20 */ { 0, 1, 0, 1, 0, 0 }, /* FCC1 ATMTXD[5] */
+ /* PA19 */ { 0, 1, 0, 1, 0, 0 }, /* FCC1 ATMTXD[6] */
+ /* PA18 */ { 0, 1, 0, 1, 0, 0 }, /* FCC1 ATMTXD[7] */
+ /* PA17 */ { 0, 1, 0, 0, 0, 0 }, /* FCC1 ATMRXD[7] */
+ /* PA16 */ { 0, 1, 0, 0, 0, 0 }, /* FCC1 ATMRXD[6] */
+ /* PA15 */ { 0, 1, 0, 0, 0, 0 }, /* FCC1 ATMRXD[5] */
+ /* PA14 */ { 0, 1, 0, 0, 0, 0 }, /* FCC1 ATMRXD[4] */
+ /* PA13 */ { 0, 1, 0, 0, 0, 0 }, /* FCC1 ATMRXD[3] */
+ /* PA12 */ { 0, 1, 0, 0, 0, 0 }, /* FCC1 ATMRXD[2] */
+ /* PA11 */ { 0, 1, 0, 0, 0, 0 }, /* FCC1 ATMRXD[1] */
+ /* PA10 */ { 0, 1, 0, 0, 0, 0 }, /* FCC1 ATMRXD[0] */
+ /* PA9 */ { 0, 1, 1, 1, 0, 0 }, /* FCC1 L1TXD */
+ /* PA8 */ { 0, 1, 1, 0, 0, 0 }, /* FCC1 L1RXD */
+ /* PA7 */ { 0, 0, 0, 1, 0, 0 }, /* PA7 */
+ /* PA6 */ { 0, 1, 1, 1, 0, 0 }, /* TDM A1 L1RSYNC */
+ /* 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 */ { 1, 0, 0, 0, 0, 0 }, /* FREERUN */
+ /* 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 MII TX_ER */
+ /* PB30 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_DV */
+ /* PB29 */ { 1, 1, 1, 1, 0, 0 }, /* FCC2 MII TX_EN */
+ /* PB28 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_ER */
+ /* PB27 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII COL */
+ /* PB26 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII CRS */
+ /* PB25 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[3] */
+ /* PB24 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[2] */
+ /* PB23 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[1] */
+ /* PB22 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[0] */
+ /* PB21 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[0] */
+ /* PB20 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[1] */
+ /* PB19 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[2] */
+ /* PB18 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[3] */
+ /* PB17 */ { 0, 1, 0, 0, 0, 0 }, /* FCC3:RX_DIV */
+ /* PB16 */ { 0, 1, 0, 0, 0, 0 }, /* FCC3:RX_ERR */
+ /* PB15 */ { 0, 1, 0, 1, 0, 0 }, /* FCC3:TX_ERR */
+ /* PB14 */ { 0, 1, 0, 1, 0, 0 }, /* FCC3:TX_EN */
+ /* PB13 */ { 0, 1, 0, 0, 0, 0 }, /* FCC3:COL */
+ /* PB12 */ { 0, 1, 0, 0, 0, 0 }, /* FCC3:CRS */
+ /* PB11 */ { 0, 1, 0, 0, 0, 0 }, /* FCC3:RXD */
+ /* PB10 */ { 0, 1, 0, 0, 0, 0 }, /* FCC3:RXD */
+ /* PB9 */ { 0, 1, 0, 0, 0, 0 }, /* FCC3:RXD */
+ /* PB8 */ { 0, 1, 0, 0, 0, 0 }, /* FCC3:RXD */
+ /* PB7 */ { 0, 1, 0, 1, 0, 0 }, /* FCC3:TXD */
+ /* PB6 */ { 0, 1, 0, 1, 0, 0 }, /* FCC3:TXD */
+ /* PB5 */ { 0, 1, 0, 1, 0, 0 }, /* FCC3:TXD */
+ /* PB4 */ { 0, 1, 0, 1, 0, 0 }, /* FCC3:TXD */
+ /* 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 EN *CLSN */
+ /* PC28 */ { 0, 0, 0, 1, 0, 0 }, /* PC28 */
+ /* PC27 */ { 0, 0, 0, 1, 0, 0 }, /* UART Clock in */
+ /* 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 }, /* ATMTFCLK */
+ /* PC22 */ { 0, 1, 0, 0, 0, 0 }, /* ATMRFCLK */
+ /* PC21 */ { 0, 1, 0, 0, 0, 0 }, /* SCC1 EN RXCLK */
+ /* PC20 */ { 0, 1, 0, 0, 0, 0 }, /* SCC1 EN TXCLK */
+ /* PC19 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_CLK CLK13 */
+ /* PC18 */ { 1, 1, 0, 0, 0, 0 }, /* FCC Tx Clock (CLK14) */
+ /* PC17 */ { 0, 0, 0, 1, 0, 0 }, /* PC17 */
+ /* PC16 */ { 0, 1, 0, 0, 0, 0 }, /* FCC Tx Clock (CLK16) */
+ /* PC15 */ { 1, 1, 0, 0, 0, 0 }, /* PC15 */
+ /* PC14 */ { 0, 1, 0, 0, 0, 0 }, /* SCC1 EN *CD */
+ /* PC13 */ { 0, 0, 0, 1, 0, 0 }, /* PC13 */
+ /* PC12 */ { 0, 1, 0, 1, 0, 0 }, /* PC12 */
+ /* PC11 */ { 0, 0, 0, 1, 0, 0 }, /* LXT971 transmit control */
+ /* PC10 */ { 1, 0, 0, 1, 0, 0 }, /* FETHMDC */
+ /* PC9 */ { 1, 0, 0, 0, 0, 0 }, /* FETHMDIO */
+ /* 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 }, /* ENET FDE */
+ /* PC1 */ { 0, 0, 0, 1, 0, 0 }, /* ENET DSQE */
+ /* PC0 */ { 0, 0, 0, 1, 0, 0 }, /* ENET LBK */
+ },
+
+ /* Port D */
+ { /* conf ppar psor pdir podr pdat */
+ /* PD31 */ { 1, 1, 0, 0, 0, 0 }, /* SCC1 EN RxD */
+ /* PD30 */ { 1, 1, 1, 1, 0, 0 }, /* SCC1 EN TxD */
+ /* PD29 */ { 1, 1, 0, 1, 0, 0 }, /* SCC1 RTS */
+ /* PD28 */ { 1, 1, 0, 0, 0, 0 }, /* SCC2 RxD */
+ /* PD27 */ { 1, 1, 1, 1, 0, 0 }, /* SCC2 TxD */
+ /* PD26 */ { 1, 1, 0, 1, 0, 0 }, /* SCC2 RTS */
+ /* 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 }, /* PD18 */
+ /* PD17 */ { 0, 1, 0, 0, 0, 0 }, /* FCC1 ATMRXPRTY */
+ /* PD16 */ { 0, 1, 0, 1, 0, 0 }, /* FCC1 ATMTXPRTY */
+ /* PD15 */ { 0, 1, 1, 0, 1, 0 }, /* I2C SDA */
+ /* PD14 */ { 0, 0, 0, 1, 0, 0 }, /* LED */
+ /* 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 }, /* SMC1 TXD */
+ /* PD8 */ { 0, 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 */
+ }
+};
+
+int board_early_init_f (void)
+{
+#if defined(CONFIG_PCI)
+ volatile immap_t *immr = (immap_t *)CFG_IMMR;
+ volatile ccsr_pcix_t *pci = &immr->im_pcix;
+
+ pci->peer &= 0xfffffffdf; /* disable master abort */
+#endif
+ return 0;
+}
+
+void reset_phy (void)
+{
+#if defined(CONFIG_ETHER_ON_FCC) /* avoid compile warnings for now */
+ volatile unsigned char *bcsr = (unsigned char *) CFG_BCSR;
+#endif
+ /* reset Giga bit Ethernet port if needed here */
+
+ /* reset the CPM FEC port */
+#if (CONFIG_ETHER_INDEX == 2)
+ bcsr[0] &= ~0x20;
+ udelay(2);
+ bcsr[0] |= 0x20;
+ udelay(1000);
+#elif (CONFIG_ETHER_INDEX == 3)
+ bcsr[0] &= ~0x10;
+ udelay(2);
+ bcsr[0] |= 0x10;
+ udelay(1000);
+#endif
+#if defined(CONFIG_MII) && defined(CONFIG_ETHER_ON_FCC)
+ miiphy_reset(0x0); /* reset PHY */
+ miiphy_write(0, PHY_MIPSCR, 0xf028); /* change PHY address to 0x02 */
+ miiphy_write(0x02, PHY_BMCR, PHY_BMCR_AUTON | PHY_BMCR_RST_NEG);
+#endif /* CONFIG_MII */
+}
+
+int checkboard (void)
+{
+ sys_info_t sysinfo;
+
+ get_sys_info (&sysinfo);
+
+ printf ("Board: Wind River SBC8560 Board\n");
+ printf ("\tCPU: %lu MHz\n", sysinfo.freqProcessor / 1000000);
+ printf ("\tCCB: %lu MHz\n", sysinfo.freqSystemBus / 1000000);
+ printf ("\tDDR: %lu MHz\n", sysinfo.freqSystemBus / 2000000);
+ if((CFG_LBC_LCRR & 0x0f) == 2 || (CFG_LBC_LCRR & 0x0f) == 4 \
+ || (CFG_LBC_LCRR & 0x0f) == 8) {
+ printf ("\tLBC: %lu MHz\n", sysinfo.freqSystemBus / 1000000 /(CFG_LBC_LCRR & 0x0f));
+ } else {
+ printf("\tLBC: unknown\n");
+ }
+ printf("\tCPM: %lu Mhz\n", sysinfo.freqSystemBus / 1000000);
+ printf("L1 D-cache 32KB, L1 I-cache 32KB enabled.\n");
+ return (0);
+}
+
+
+long int initdram (int board_type)
+{
+ long dram_size = 0;
+ extern long spd_sdram (void);
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+#if !defined(CONFIG_RAM_AS_FLASH)
+ volatile ccsr_lbc_t *lbc= &immap->im_lbc;
+ sys_info_t sysinfo;
+ uint temp_lbcdll = 0;
+#endif
+#if !defined(CONFIG_RAM_AS_FLASH) || defined(CONFIG_DDR_DLL)
+ volatile ccsr_gur_t *gur= &immap->im_gur;
+#endif
+#if defined(CONFIG_DDR_DLL)
+ uint temp_ddrdll = 0;
+
+ /* Work around to stabilize DDR DLL */
+ temp_ddrdll = gur->ddrdllcr;
+ gur->ddrdllcr = ((temp_ddrdll & 0xff) << 16) | 0x80000000;
+ asm("sync;isync;msync");
+#endif
+
+#if defined(CONFIG_SPD_EEPROM)
+ dram_size = spd_sdram ();
+#else
+ dram_size = fixed_sdram ();
+#endif
+
+#if XXX
+#if !defined(CONFIG_RAM_AS_FLASH) /* LocalBus SDRAM is not emulating flash */
+ get_sys_info(&sysinfo);
+ /* if localbus freq is less than 66Mhz,we use bypass mode,otherwise use DLL */
+ if(sysinfo.freqSystemBus/(CFG_LBC_LCRR & 0x0f) < 66000000) {
+ lbc->lcrr = (CFG_LBC_LCRR & 0x0fffffff)| 0x80000000;
+ } else {
+#if defined(CONFIG_MPC85xx_REV1) /* need change CLKDIV before enable DLL */
+ lbc->lcrr = 0x10000004; /* default CLKDIV is 8, change it to 4 temporarily */
+#endif
+ lbc->lcrr = CFG_LBC_LCRR & 0x7fffffff;
+ udelay(200);
+ temp_lbcdll = gur->lbcdllcr;
+ gur->lbcdllcr = ((temp_lbcdll & 0xff) << 16 ) | 0x80000000;
+ asm("sync;isync;msync");
+ }
+ lbc->or2 = CFG_OR2_PRELIM; /* 64MB SDRAM */
+ lbc->br2 = CFG_BR2_PRELIM;
+ lbc->lbcr = CFG_LBC_LBCR;
+ lbc->lsdmr = CFG_LBC_LSDMR_1;
+ asm("sync");
+ (unsigned int) * (ulong *)0 = 0x000000ff;
+ lbc->lsdmr = CFG_LBC_LSDMR_2;
+ asm("sync");
+ (unsigned int) * (ulong *)0 = 0x000000ff;
+ lbc->lsdmr = CFG_LBC_LSDMR_3;
+ asm("sync");
+ (unsigned int) * (ulong *)0 = 0x000000ff;
+ lbc->lsdmr = CFG_LBC_LSDMR_4;
+ asm("sync");
+ (unsigned int) * (ulong *)0 = 0x000000ff;
+ lbc->lsdmr = CFG_LBC_LSDMR_5;
+ asm("sync");
+ lbc->lsrt = CFG_LBC_LSRT;
+ asm("sync");
+ lbc->mrtpr = CFG_LBC_MRTPR;
+ asm("sync");
+#endif
+#endif
+
+#if defined(CONFIG_DDR_ECC)
+ {
+ /* Initialize all of memory for ECC, then
+ * enable errors */
+ uint *p = 0;
+ uint i = 0;
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile ccsr_ddr_t *ddr= &immap->im_ddr;
+ dma_init();
+ for (*p = 0; p < (uint *)(8 * 1024); p++) {
+ if (((unsigned int)p & 0x1f) == 0) { dcbz(p); }
+ *p = (unsigned int)0xdeadbeef;
+ if (((unsigned int)p & 0x1c) == 0x1c) { dcbf(p); }
+ }
+
+ /* 8K */
+ dma_xfer((uint *)0x2000,0x2000,(uint *)0);
+ /* 16K */
+ dma_xfer((uint *)0x4000,0x4000,(uint *)0);
+ /* 32K */
+ dma_xfer((uint *)0x8000,0x8000,(uint *)0);
+ /* 64K */
+ dma_xfer((uint *)0x10000,0x10000,(uint *)0);
+ /* 128k */
+ dma_xfer((uint *)0x20000,0x20000,(uint *)0);
+ /* 256k */
+ dma_xfer((uint *)0x40000,0x40000,(uint *)0);
+ /* 512k */
+ dma_xfer((uint *)0x80000,0x80000,(uint *)0);
+ /* 1M */
+ dma_xfer((uint *)0x100000,0x100000,(uint *)0);
+ /* 2M */
+ dma_xfer((uint *)0x200000,0x200000,(uint *)0);
+ /* 4M */
+ dma_xfer((uint *)0x400000,0x400000,(uint *)0);
+
+ for (i = 1; i < dram_size / 0x800000; i++) {
+ dma_xfer((uint *)(0x800000*i),0x800000,(uint *)0);
+ }
+
+ /* Enable errors for ECC */
+ ddr->err_disable = 0x00000000;
+ asm("sync;isync;msync");
+ }
+#endif
+
+ return dram_size;
+}
+
+
+#if defined(CFG_DRAM_TEST)
+int testdram (void)
+{
+ uint *pstart = (uint *) CFG_MEMTEST_START;
+ uint *pend = (uint *) CFG_MEMTEST_END;
+ uint *p;
+
+ printf("SDRAM test phase 1:\n");
+ 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;
+ }
+ }
+
+ printf("SDRAM test phase 2:\n");
+ 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;
+ }
+ }
+
+ printf("SDRAM test passed.\n");
+ return 0;
+}
+#endif
+
+#if !defined(CONFIG_SPD_EEPROM)
+/*************************************************************************
+ * fixed sdram init -- doesn't use serial presence detect.
+ ************************************************************************/
+long int fixed_sdram (void)
+{
+
+#define CFG_DDR_CONTROL 0xc2000000
+
+ #ifndef CFG_RAMBOOT
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile ccsr_ddr_t *ddr= &immap->im_ddr;
+
+ ddr->cs0_bnds = 0x00000007;
+ ddr->cs1_bnds = 0x0010001f;
+ ddr->cs2_bnds = 0x00000000;
+ ddr->cs3_bnds = 0x00000000;
+ ddr->cs0_config = 0x80000102;
+ ddr->cs1_config = 0x80000102;
+ ddr->cs2_config = 0x00000000;
+ ddr->cs3_config = 0x00000000;
+ ddr->timing_cfg_1 = 0x37334321;
+ ddr->timing_cfg_2 = 0x00000800;
+ ddr->sdram_cfg = 0x42000000;
+ ddr->sdram_mode = 0x00000022;
+ ddr->sdram_interval = 0x05200100;
+ ddr->err_sbe = 0x00ff0000;
+ #if defined (CONFIG_DDR_ECC)
+ ddr->err_disable = 0x0000000D;
+ #endif
+ asm("sync;isync;msync");
+ udelay(500);
+ #if defined (CONFIG_DDR_ECC)
+ /* Enable ECC checking */
+ ddr->sdram_cfg = (CFG_DDR_CONTROL | 0x20000000);
+ #else
+ ddr->sdram_cfg = CFG_DDR_CONTROL;
+ #endif
+ asm("sync; isync; msync");
+ udelay(500);
+ #endif
+ return CFG_SDRAM_SIZE * 1024 * 1024;
+}
+#endif /* !defined(CONFIG_SPD_EEPROM) */
generated by cgit v1.1 at 2024-11-16 11:17:13 +0000