* Patch by Jon Loeliger, 2005-05-05

  Implemented support for MPC8548CDS board.
  Added DDR II support based on SPD values for MPC85xx boards.
  This roll-up patch also includes bugfies for the previously
  published patches:
    DDRII CPO, pre eTSEC, 8548 LBIU, Andy's TSEC, eTSEC 3&4 I/O

1 files changed, 329 insertions, 0 deletions

diff --git a/board/cds/mpc8548cds/mpc8548cds.c b/board/cds/mpc8548cds/mpc8548cds.c
new file mode 100644
index 0000000..5bc0890
--- /dev/null
+++ b/board/cds/mpc8548cds/mpc8548cds.c
@@ -0,0 +1,329 @@
+/*
+ * Copyright 2004 Freescale Semiconductor.
+ *
+ * (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
+ */
+
+#include <common.h>
+#include <pci.h>
+#include <asm/processor.h>
+#include <asm/immap_85xx.h>
+#include <spd.h>
+
+#include "../common/cadmus.h"
+#include "../common/eeprom.h"
+
+#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
+extern void ddr_enable_ecc(unsigned int dram_size);
+#endif
+
+extern long int spd_sdram(void);
+
+void local_bus_init(void);
+void sdram_init(void);
+
+int board_early_init_f (void)
+{
+	return 0;
+}
+
+int checkboard (void)
+{
+	volatile immap_t *immap = (immap_t *) CFG_CCSRBAR;
+	volatile ccsr_gur_t *gur = &immap->im_gur;
+
+	/* PCI slot in USER bits CSR[6:7] by convention. */
+	uint pci_slot = get_pci_slot ();
+
+	uint pci_dual = get_pci_dual ();	/* PCI DUAL in CM_PCI[3] */
+	uint pci1_32 = gur->pordevsr & 0x10000;	/* PORDEVSR[15] */
+	uint pci1_clk_sel = gur->porpllsr & 0x8000;	/* PORPLLSR[16] */
+	uint pci2_clk_sel = gur->porpllsr & 0x4000;	/* PORPLLSR[17] */
+
+	uint pci1_speed = get_clock_freq ();	/* PCI PSPEED in [4:5] */
+
+	uint cpu_board_rev = get_cpu_board_revision ();
+
+	printf ("Board: CDS Version 0x%02x, PCI Slot %d\n",
+		get_board_version (), pci_slot);
+
+	printf ("CPU Board Revision %d.%d (0x%04x)\n",
+		MPC85XX_CPU_BOARD_MAJOR (cpu_board_rev),
+		MPC85XX_CPU_BOARD_MINOR (cpu_board_rev), cpu_board_rev);
+
+	printf ("    PCI1: %d bit, %s MHz, %s\n",
+		(pci1_32) ? 32 : 64,
+		(pci1_speed == 33000000) ? "33" :
+		(pci1_speed == 66000000) ? "66" : "unknown",
+		pci1_clk_sel ? "sync" : "async");
+
+	if (pci_dual) {
+		printf ("    PCI2: 32 bit, 66 MHz, %s\n",
+			pci2_clk_sel ? "sync" : "async");
+	} else {
+		printf ("    PCI2: disabled\n");
+	}
+
+	/*
+	 * Initialize local bus.
+	 */
+	local_bus_init ();
+
+
+	/*
+	 * Hack TSEC 3 and 4 IO voltages.
+	 */
+	gur->tsec34ioovcr = 0xe7e0;	/*  1110 0111 1110 0xxx */
+
+	return 0;
+}
+
+long int
+initdram(int board_type)
+{
+	long dram_size = 0;
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+
+	puts("Initializing\n");
+
+#if defined(CONFIG_DDR_DLL)
+	{
+		/*
+		 * Work around to stabilize DDR DLL MSYNC_IN.
+		 * Errata DDR9 seems to have been fixed.
+		 * This is now the workaround for Errata DDR11:
+		 *    Override DLL = 1, Course Adj = 1, Tap Select = 0
+		 */
+
+		volatile ccsr_gur_t *gur= &immap->im_gur;
+
+		gur->ddrdllcr = 0x81000000;
+		asm("sync;isync;msync");
+		udelay(200);
+	}
+#endif
+	dram_size = spd_sdram();
+
+#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
+	/*
+	 * Initialize and enable DDR ECC.
+	 */
+	ddr_enable_ecc(dram_size);
+#endif
+	/*
+	 * SDRAM Initialization
+	 */
+	sdram_init();
+
+	puts("    DDR: ");
+	return dram_size;
+}
+
+/*
+ * Initialize Local Bus
+ */
+void
+local_bus_init(void)
+{
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+	volatile ccsr_gur_t *gur = &immap->im_gur;
+	volatile ccsr_lbc_t *lbc = &immap->im_lbc;
+
+	uint clkdiv;
+	uint lbc_hz;
+	sys_info_t sysinfo;
+
+	get_sys_info(&sysinfo);
+	clkdiv = (lbc->lcrr & 0x0f) * 2;
+	lbc_hz = sysinfo.freqSystemBus / 1000000 / clkdiv;
+
+	gur->lbiuiplldcr1 = 0x00078080;
+	if (clkdiv == 16) {
+		gur->lbiuiplldcr0 = 0x7c0f1bf0;
+	} else if (clkdiv == 8) {
+		gur->lbiuiplldcr0 = 0x6c0f1bf0;
+	} else if (clkdiv == 4) {
+		gur->lbiuiplldcr0 = 0x5c0f1bf0;
+	}
+
+	lbc->lcrr |= 0x00030000;
+
+	asm("sync;isync;msync");
+}
+
+/*
+ * Initialize SDRAM memory on the Local Bus.
+ */
+void
+sdram_init(void)
+{
+#if defined(CFG_OR2_PRELIM) && defined(CFG_BR2_PRELIM)
+
+	uint idx;
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+	volatile ccsr_lbc_t *lbc = &immap->im_lbc;
+	uint *sdram_addr = (uint *)CFG_LBC_SDRAM_BASE;
+	uint cpu_board_rev;
+	uint lsdmr_common;
+
+	puts("    SDRAM: ");
+
+	print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
+
+	/*
+	 * Setup SDRAM Base and Option Registers
+	 */
+	lbc->or2 = CFG_OR2_PRELIM;
+	asm("msync");
+
+	lbc->br2 = CFG_BR2_PRELIM;
+	asm("msync");
+
+	lbc->lbcr = CFG_LBC_LBCR;
+	asm("msync");
+
+
+	lbc->lsrt = CFG_LBC_LSRT;
+	lbc->mrtpr = CFG_LBC_MRTPR;
+	asm("msync");
+
+	/*
+	 * MPC8548 uses "new" 15-16 style addressing.
+	 */
+	cpu_board_rev = get_cpu_board_revision();
+	lsdmr_common = CFG_LBC_LSDMR_COMMON;
+	lsdmr_common |= CFG_LBC_LSDMR_BSMA1516;
+
+	/*
+	 * Issue PRECHARGE ALL command.
+	 */
+	lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_PCHALL;
+	asm("sync;msync");
+	*sdram_addr = 0xff;
+	ppcDcbf((unsigned long) sdram_addr);
+	udelay(100);
+
+	/*
+	 * Issue 8 AUTO REFRESH commands.
+	 */
+	for (idx = 0; idx < 8; idx++) {
+		lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_ARFRSH;
+		asm("sync;msync");
+		*sdram_addr = 0xff;
+		ppcDcbf((unsigned long) sdram_addr);
+		udelay(100);
+	}
+
+	/*
+	 * Issue 8 MODE-set command.
+	 */
+	lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_MRW;
+	asm("sync;msync");
+	*sdram_addr = 0xff;
+	ppcDcbf((unsigned long) sdram_addr);
+	udelay(100);
+
+	/*
+	 * Issue NORMAL OP command.
+	 */
+	lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_NORMAL;
+	asm("sync;msync");
+	*sdram_addr = 0xff;
+	ppcDcbf((unsigned long) sdram_addr);
+	udelay(200);    /* Overkill. Must wait > 200 bus cycles */
+
+#endif	/* enable SDRAM init */
+}
+
+#if defined(CFG_DRAM_TEST)
+int
+testdram(void)
+{
+	uint *pstart = (uint *) CFG_MEMTEST_START;
+	uint *pend = (uint *) CFG_MEMTEST_END;
+	uint *p;
+
+	printf("Testing DRAM from 0x%08x to 0x%08x\n",
+	       CFG_MEMTEST_START,
+	       CFG_MEMTEST_END);
+
+	printf("DRAM test phase 1:\n");
+	for (p = pstart; p < pend; p++)
+		*p = 0xaaaaaaaa;
+
+	for (p = pstart; p < pend; p++) {
+		if (*p != 0xaaaaaaaa) {
+			printf ("DRAM test fails at: %08x\n", (uint) p);
+			return 1;
+		}
+	}
+
+	printf("DRAM test phase 2:\n");
+	for (p = pstart; p < pend; p++)
+		*p = 0x55555555;
+
+	for (p = pstart; p < pend; p++) {
+		if (*p != 0x55555555) {
+			printf ("DRAM test fails at: %08x\n", (uint) p);
+			return 1;
+		}
+	}
+
+	printf("DRAM test passed.\n");
+	return 0;
+}
+#endif
+
+#if defined(CONFIG_PCI)
+
+/*
+ * Initialize PCI Devices, report devices found.
+ */
+
+#ifndef CONFIG_PCI_PNP
+static struct pci_config_table pci_mpc85xxcds_config_table[] = {
+    { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+      PCI_IDSEL_NUMBER, PCI_ANY_ID,
+      pci_cfgfunc_config_device, { PCI_ENET0_IOADDR,
+				   PCI_ENET0_MEMADDR,
+				   PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
+      } },
+    { }
+};
+#endif
+
+static struct pci_controller hose = {
+#ifndef CONFIG_PCI_PNP
+	config_table: pci_mpc85xxcds_config_table,
+#endif
+};
+
+#endif	/* CONFIG_PCI */
+
+void
+pci_init_board(void)
+{
+#ifdef CONFIG_PCI
+	extern void pci_mpc85xx_init(struct pci_controller *hose);
+
+	pci_mpc85xx_init(&hose);
+#endif
+}