1 files changed, 373 insertions, 0 deletions
diff --git a/board/cds/mpc8541cds/mpc8541cds.c b/board/cds/mpc8541cds/mpc8541cds.c
new file mode 100644
index 000000000..b824b3dc1
--- /dev/null
+++ b/board/cds/mpc8541cds/mpc8541cds.c
@@ -0,0 +1,373 @@
+/*
+ * 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)
+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();
+
+    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)
+	/*
+	 * 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;
+	uint temp_lbcdll;
+
+	/*
+	 * Errata LBC11.
+	 * Fix Local Bus clock glitch when DLL is enabled.
+	 *
+	 * If localbus freq is < 66Mhz, DLL bypass mode must be used.
+	 * If localbus freq is > 133Mhz, DLL can be safely enabled.
+	 * Between 66 and 133, the DLL is enabled with an override workaround.
+	 */
+
+	get_sys_info(&sysinfo);
+	clkdiv = lbc->lcrr & 0x0f;
+	lbc_hz = sysinfo.freqSystemBus / 1000000 / clkdiv;
+
+	if (lbc_hz < 66) {
+		lbc->lcrr |= 0x80000000;	/* DLL Bypass */
+
+	} else if (lbc_hz >= 133) {
+		lbc->lcrr &= (~0x80000000);		/* DLL Enabled */
+
+	} else {
+		lbc->lcrr &= (~0x8000000);	/* DLL Enabled */
+		udelay(200);
+
+		/*
+		 * Sample LBC DLL ctrl reg, upshift it to set the
+		 * override bits.
+		 */
+		temp_lbcdll = gur->lbcdllcr;
+		gur->lbcdllcr = (((temp_lbcdll & 0xff) << 16) | 0x80000000);
+		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");
+
+	/*
+	 * Determine which address lines to use baed on CPU board rev.
+	 */
+	cpu_board_rev = get_cpu_board_revision();
+	lsdmr_common = CFG_LBC_LSDMR_COMMON;
+	if (cpu_board_rev == MPC85XX_CPU_BOARD_REV_1_0) {
+		lsdmr_common |= CFG_LBC_LSDMR_BSMA1617;
+	} else if (cpu_board_rev == MPC85XX_CPU_BOARD_REV_1_1) {
+		lsdmr_common |= CFG_LBC_LSDMR_BSMA1516;
+	} else {
+		/*
+		 * Assume something unable to identify itself is
+		 * really old, and likely has lines 16/17 mapped.
+		 */
+		lsdmr_common |= CFG_LBC_LSDMR_BSMA1617;
+	}
+
+	/*
+	 * 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
+}