1 files changed, 276 insertions, 0 deletions
diff --git a/board/tqm8540/tqm8540.c b/board/tqm8540/tqm8540.c
new file mode 100644
index 0000000..8e25081
--- /dev/null
+++ b/board/tqm8540/tqm8540.c
@@ -0,0 +1,276 @@
+/*
+ * Copyright 2005 DENX Software Engineering
+ * Copyright 2004 Freescale Semiconductor.
+ * (C) Copyright 2002,2003, Motorola Inc.
+ * Xianghua Xiao, (X.Xiao@motorola.com)
+ *
+ * (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>
+
+#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);
+long int fixed_sdram (void);
+
+
+int board_early_init_f (void)
+{
+	return 0;
+}
+
+int checkboard (void)
+{
+	puts ("Board: TQM8540\n");
+
+#ifdef CONFIG_PCI
+	printf ("    PCI1: 32 bit, %d MHz (compiled)\n",
+		CONFIG_SYS_CLK_FREQ / 1000000);
+#else
+	printf ("    PCI1: disabled\n");
+#endif
+	/*
+	 * Initialize local bus.
+	 */
+	local_bus_init ();
+
+	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;
+
+	puts ("Initializing\n");
+
+#if defined(CONFIG_DDR_DLL)
+	{
+		volatile ccsr_gur_t *gur = &immap->im_gur;
+		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 defined(CONFIG_DDR_ECC)
+	/*
+	 * Initialize and enable DDR ECC.
+	 */
+	ddr_enable_ecc (dram_size);
+#endif
+
+	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;
+
+	/*
+	 * 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 = CFG_LBC_LCRR | 0x80000000;	/* DLL Bypass */
+		lbc->ltedr = 0xa4c80000;	/* DK: !!! */
+
+	} else if (lbc_hz >= 133) {
+		lbc->lcrr = CFG_LBC_LCRR & (~0x80000000);	/* DLL Enabled */
+
+	} else {
+		/*
+		 * On REV1 boards, need to change CLKDIV before enable DLL.
+		 * Default CLKDIV is 8, change it to 4 temporarily.
+		 */
+		uint pvr = get_pvr ();
+		uint temp_lbcdll = 0;
+
+		if (pvr == PVR_85xx_REV1) {
+			/* FIXME: Justify the high bit here. */
+			lbc->lcrr = 0x10000004;
+		}
+
+		lbc->lcrr = CFG_LBC_LCRR & (~0x80000000);	/* 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");
+	}
+}
+
+
+#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)
+{
+#ifndef CFG_RAMBOOT
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile ccsr_ddr_t *ddr = &immap->im_ddr;
+
+	ddr->cs0_bnds = CFG_DDR_CS0_BNDS;
+	ddr->cs0_config = CFG_DDR_CS0_CONFIG;
+	ddr->timing_cfg_1 = CFG_DDR_TIMING_1;
+	ddr->timing_cfg_2 = CFG_DDR_TIMING_2;
+	ddr->sdram_mode = CFG_DDR_MODE;
+	ddr->sdram_interval = CFG_DDR_INTERVAL;
+	ddr->err_disable = 0x0000000D;
+#if defined (CONFIG_DDR_ECC)
+	ddr->err_disable = 0x0000000D;
+	ddr->err_sbe = 0x00ff0000;
+#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 get_ram_size (0, CFG_SDRAM_SIZE * 1024 * 1024);
+}
+#endif /* !defined(CONFIG_SPD_EEPROM) */
+
+
+#if defined(CONFIG_PCI)
+/*
+ * Initialize PCI Devices, report devices found.
+ */
+
+#ifndef CONFIG_PCI_PNP
+static struct pci_config_table pci_mpc85xxads_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_mpc85xxads_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 /* CONFIG_PCI */
+}