*
* (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.com>
*
- * 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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/processor.h>
#include <asm/immap_85xx.h>
#include <asm/fsl_pci.h>
-#include <asm/fsl_ddr_sdram.h>
+#include <fsl_ddr_sdram.h>
#include <asm/fsl_serdes.h>
#include <spd_sdram.h>
#include <netdev.h>
volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
volatile fsl_lbc_t *lbc = LBC_BASE_ADDR;
- uint clkdiv;
+ uint clkdiv, lbc_mhz, lcrr = CONFIG_SYS_LBC_LCRR;
sys_info_t sysinfo;
get_sys_info(&sysinfo);
- clkdiv = (in_be32(&lbc->lcrr) & LCRR_CLKDIV) * 2;
+
+ lbc_mhz = sysinfo.freq_localbus / 1000000;
+ clkdiv = sysinfo.freq_systembus / sysinfo.freq_localbus;
+
+ debug("LCRR=0x%x, CD=%d, MHz=%d\n", lcrr, clkdiv, lbc_mhz);
out_be32(&gur->lbiuiplldcr1, 0x00078080);
if (clkdiv == 16) {
out_be32(&gur->lbiuiplldcr0, 0x5c0f1bf0);
}
- setbits_be32(&lbc->lcrr, 0x00030000);
+ /*
+ * Local Bus Clock > 83.3 MHz. According to timing
+ * specifications set LCRR[EADC] to 2 delay cycles.
+ */
+ if (lbc_mhz > 83) {
+ lcrr &= ~LCRR_EADC;
+ lcrr |= LCRR_EADC_2;
+ }
+
+ /*
+ * According to MPC8548ERMAD Rev. 1.3, 13.3.1.16, 13-30
+ * disable PLL bypass for Local Bus Clock > 83 MHz.
+ */
+ if (lbc_mhz >= 66)
+ lcrr &= (~LCRR_DBYP); /* DLL Enabled */
+ else
+ lcrr |= LCRR_DBYP; /* DLL Bypass */
+
+ out_be32(&lbc->lcrr, lcrr);
asm("sync;isync;msync");
+ /*
+ * According to MPC8548ERMAD Rev.1.3 read back LCRR
+ * and terminate with isync
+ */
+ lcrr = in_be32(&lbc->lcrr);
+ asm ("isync;");
+
+ /* let DLL stabilize */
+ udelay(500);
+
out_be32(&lbc->ltesr, 0xffffffff); /* Clear LBC error IRQs */
out_be32(&lbc->lteir, 0xffffffff); /* Enable LBC error IRQs */
}
#if defined(CONFIG_SYS_LBC_SDRAM_SIZE)
uint idx;
+ const unsigned long size = CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024;
volatile fsl_lbc_t *lbc = LBC_BASE_ADDR;
uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE;
- uint lsdmr_common;
+ uint *sdram_addr2 = (uint *)(CONFIG_SYS_LBC_SDRAM_BASE + size/2);
puts(" SDRAM: ");
- print_size (CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
+ print_size(size, "\n");
/*
* Setup SDRAM Base and Option Registers
out_be32(&lbc->mrtpr, CONFIG_SYS_LBC_MRTPR);
asm("msync");
- /*
- * MPC8548 uses "new" 15-16 style addressing.
- */
- lsdmr_common = CONFIG_SYS_LBC_LSDMR_COMMON;
- lsdmr_common |= LSDMR_BSMA1516;
-
/*
* Issue PRECHARGE ALL command.
*/
- out_be32(&lbc->lsdmr, lsdmr_common | LSDMR_OP_PCHALL);
+ out_be32(&lbc->lsdmr, CONFIG_SYS_LBC_LSDMR_PCHALL);
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
+ *sdram_addr2 = 0xff;
+ ppcDcbf((unsigned long) sdram_addr2);
udelay(100);
/*
* Issue 8 AUTO REFRESH commands.
*/
for (idx = 0; idx < 8; idx++) {
- out_be32(&lbc->lsdmr, lsdmr_common | LSDMR_OP_ARFRSH);
+ out_be32(&lbc->lsdmr, CONFIG_SYS_LBC_LSDMR_ARFRSH);
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
+ *sdram_addr2 = 0xff;
+ ppcDcbf((unsigned long) sdram_addr2);
udelay(100);
}
/*
* Issue 8 MODE-set command.
*/
- out_be32(&lbc->lsdmr, lsdmr_common | LSDMR_OP_MRW);
+ out_be32(&lbc->lsdmr, CONFIG_SYS_LBC_LSDMR_MRW);
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
+ *sdram_addr2 = 0xff;
+ ppcDcbf((unsigned long) sdram_addr2);
udelay(100);
/*
- * Issue NORMAL OP command.
+ * Issue RFEN command.
*/
- out_be32(&lbc->lsdmr, lsdmr_common | LSDMR_OP_NORMAL);
+ out_be32(&lbc->lsdmr, CONFIG_SYS_LBC_LSDMR_RFEN);
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
+ *sdram_addr2 = 0xff;
+ ppcDcbf((unsigned long) sdram_addr2);
udelay(200); /* Overkill. Must wait > 200 bus cycles */
#endif /* enable SDRAM init */
}
#endif
-#if !defined(CONFIG_SPD_EEPROM)
-#define CONFIG_SYS_DDR_CONTROL 0xc300c000
-/*************************************************************************
- * fixed_sdram init -- doesn't use serial presence detect.
- * assumes 256MB DDR2 SDRAM SODIMM, without ECC, running at DDR400 speed.
- ************************************************************************/
-phys_size_t fixed_sdram(void)
-{
- volatile ccsr_ddr_t *ddr = (void *)(CONFIG_SYS_MPC85xx_DDR_ADDR);
-
- out_be32(&ddr->cs0_bnds, 0x0000007f);
- out_be32(&ddr->cs1_bnds, 0x008000ff);
- out_be32(&ddr->cs2_bnds, 0x00000000);
- out_be32(&ddr->cs3_bnds, 0x00000000);
- out_be32(&ddr->cs0_config, 0x80010101);
- out_be32(&ddr->cs1_config, 0x80010101);
- out_be32(&ddr->cs2_config, 0x00000000);
- out_be32(&ddr->cs3_config, 0x00000000);
- out_be32(&ddr->timing_cfg_3, 0x00000000);
- out_be32(&ddr->timing_cfg_0, 0x00220802);
- out_be32(&ddr->timing_cfg_1, 0x38377322);
- out_be32(&ddr->timing_cfg_2, 0x0fa044C7);
- out_be32(&ddr->sdram_cfg, 0x4300C000);
- out_be32(&ddr->sdram_cfg_2, 0x24401000);
- out_be32(&ddr->sdram_mode, 0x23C00542);
- out_be32(&ddr->sdram_mode_2, 0x00000000);
- out_be32(&ddr->sdram_interval, 0x05080100);
- out_be32(&ddr->sdram_md_cntl, 0x00000000);
- out_be32(&ddr->sdram_data_init, 0x00000000);
- out_be32(&ddr->sdram_clk_cntl, 0x03800000);
- asm("sync;isync;msync");
- udelay(500);
-
- #if defined (CONFIG_DDR_ECC)
- /* Enable ECC checking */
- out_be32(&ddr->sdram_cfg, CONFIG_SYS_DDR_CONTROL | 0x20000000);
- #else
- out_be32(&ddr->sdram_cfg, CONFIG_SYS_DDR_CONTROL);
- #endif
-
- return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
-}
-#endif
-
#ifdef CONFIG_PCI1
static struct pci_controller pci1_hose;
#endif /* CONFIG_PCI1 */
projects / karo-tx-uboot.git / blobdiff