1 files changed, 260 insertions, 0 deletions
diff --git a/board/v38b/v38b.c b/board/v38b/v38b.c
new file mode 100644
index 0000000..dede996
--- /dev/null
+++ b/board/v38b/v38b.c
@@ -0,0 +1,260 @@
+/*
+ * (C) Copyright 2003-2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2004
+ * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.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 <mpc5xxx.h>
+#include <asm/processor.h>
+
+
+#ifndef CFG_RAMBOOT
+static void sdram_start(int hi_addr)
+{
+	long hi_addr_bit = hi_addr ? 0x01000000 : 0;
+
+	/* unlock mode register */
+	*(vu_long *) MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 | hi_addr_bit;
+	__asm__ volatile ("sync");
+
+	/* precharge all banks */
+	*(vu_long *) MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
+	__asm__ volatile ("sync");
+
+#if SDRAM_DDR
+	/* set mode register: extended mode */
+	*(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
+	__asm__ volatile ("sync");
+
+	/* set mode register: reset DLL */
+	*(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000;
+	__asm__ volatile ("sync");
+#endif /* SDRAM_DDR */
+
+	/* precharge all banks */
+	*(vu_long *) MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit;
+	__asm__ volatile ("sync");
+
+	/* auto refresh */
+	*(vu_long *) MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 | hi_addr_bit;
+	__asm__ volatile ("sync");
+
+	/* set mode register */
+	*(vu_long *) MPC5XXX_SDRAM_MODE = SDRAM_MODE;
+	__asm__ volatile ("sync");
+
+	/* normal operation */
+	*(vu_long *) MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
+	__asm__ volatile ("sync");
+}
+#endif /* !CFG_RAMBOOT */
+
+
+long int initdram(int board_type)
+{
+	ulong dramsize = 0;
+	ulong dramsize2 = 0;
+	uint svr, pvr;
+
+#ifndef CFG_RAMBOOT
+	ulong test1, test2;
+
+	/* setup SDRAM chip selects */
+	*(vu_long *) MPC5XXX_SDRAM_CS0CFG = 0x0000001e;	/* 2G at 0x0 */
+	*(vu_long *) MPC5XXX_SDRAM_CS1CFG = 0x80000000;	/* disabled */
+	__asm__ volatile ("sync");
+
+	/* setup config registers */
+	*(vu_long *) MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
+	*(vu_long *) MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
+	__asm__ volatile ("sync");
+
+#if SDRAM_DDR
+	/* set tap delay */
+	*(vu_long *) MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
+	__asm__ volatile ("sync");
+#endif /* SDRAM_DDR */
+
+	/* find RAM size using SDRAM CS0 only */
+	sdram_start(0);
+	test1 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
+	sdram_start(1);
+	test2 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
+	if (test1 > test2) {
+		sdram_start(0);
+		dramsize = test1;
+	} else
+		dramsize = test2;
+
+	/* memory smaller than 1MB is impossible */
+	if (dramsize < (1 << 20))
+		dramsize = 0;
+
+	/* set SDRAM CS0 size according to the amount of RAM found */
+	if (dramsize > 0)
+		*(vu_long *) MPC5XXX_SDRAM_CS0CFG = 0x13 + __builtin_ffs(dramsize >> 20) - 1;
+	else
+		*(vu_long *) MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
+
+	/* let SDRAM CS1 start right after CS0 */
+	*(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;/* 2G */
+
+	/* find RAM size using SDRAM CS1 only */
+	if (!dramsize)
+		sdram_start(0);
+	test2 = test1 = get_ram_size((long *) (CFG_SDRAM_BASE + dramsize), 0x80000000);
+	if (!dramsize) {
+		sdram_start(1);
+		test2 = get_ram_size((long *) (CFG_SDRAM_BASE + dramsize), 0x80000000);
+	}
+	if (test1 > test2) {
+		sdram_start(0);
+		dramsize2 = test1;
+	} else
+		dramsize2 = test2;
+
+	/* memory smaller than 1MB is impossible */
+	if (dramsize2 < (1 << 20))
+		dramsize2 = 0;
+
+	/* set SDRAM CS1 size according to the amount of RAM found */
+	if (dramsize2 > 0)
+		*(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize
+			| (0x13 + __builtin_ffs(dramsize2 >> 20) - 1);
+	else
+		*(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
+
+#else /* CFG_RAMBOOT */
+
+	/* retrieve size of memory connected to SDRAM CS0 */
+	dramsize = *(vu_long *) MPC5XXX_SDRAM_CS0CFG & 0xFF;
+	if (dramsize >= 0x13)
+		dramsize = (1 << (dramsize - 0x13)) << 20;
+	else
+		dramsize = 0;
+
+	/* retrieve size of memory connected to SDRAM CS1 */
+	dramsize2 = *(vu_long *) MPC5XXX_SDRAM_CS1CFG & 0xFF;
+	if (dramsize2 >= 0x13)
+		dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
+	else
+		dramsize2 = 0;
+
+#endif /* CFG_RAMBOOT */
+
+	/*
+	 * On MPC5200B we need to set the special configuration delay in the
+	 * DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
+	 * Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
+	 *
+	 * "The SDelay should be written to a value of 0x00000004. It is
+	 * required to account for changes caused by normal wafer processing
+	 * parameters."
+	 */
+	svr = get_svr();
+	pvr = get_pvr();
+	if ((SVR_MJREV(svr) >= 2) &&
+		(PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4)) {
+
+		*(vu_long *) MPC5XXX_SDRAM_SDELAY = 0x04;
+		__asm__ volatile ("sync");
+	}
+
+	return dramsize + dramsize2;
+}
+
+
+int checkboard (void)
+{
+	puts("Board: MarelV38B\n");
+	return 0;
+}
+
+
+int board_early_init_r(void)
+{
+	/*
+	 * Now, when we are in RAM, enable flash write access for the
+	 * detection process.  Note that CS_BOOT cannot be cleared when
+	 * executing in flash.
+	 */
+	*(vu_long *) MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
+
+#ifdef CONFIG_HW_WATCHDOG
+	/*
+	 * Enable and configure the direction (output) of PSC3_9 - watchdog
+	 * reset input. Refer to 7.3.2.2.[1,3,4] of the MPC5200B User's
+	 * Manual.
+	 */
+	*(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC3_9;
+	*(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_PSC3_9;
+#endif /* CONFIG_HW_WATCHDOG */
+
+	/*
+	 * Enable GPIO_WKUP_7 to "read the status of the actual power
+	 * situation". Default direction is input, so no need to set it
+	 * explicitly.
+	 */
+	*(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_WKUP_7;
+	return 0;
+}
+
+
+#if defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET)
+void init_ide_reset(void)
+{
+	debug("init_ide_reset\n");
+
+	/* Configure PSC1_4 as GPIO output for ATA reset */
+	*(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC1_4;
+	*(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_PSC1_4;
+	/* Deassert reset */
+	*(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_PSC1_4;
+}
+
+
+void ide_set_reset(int idereset)
+{
+	debug("ide_reset(%d)\n", idereset);
+
+	if (idereset) {
+		*(vu_long *) MPC5XXX_WU_GPIO_DATA_O &= ~GPIO_PSC1_4;
+		/* Make a delay. MPC5200 spec says 25 usec min */
+		udelay(500000);
+	} else
+		*(vu_long *) MPC5XXX_WU_GPIO_DATA_O |=  GPIO_PSC1_4;
+}
+#endif /* defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) */
+
+
+#ifdef CONFIG_HW_WATCHDOG
+void hw_watchdog_reset(void)
+{
+	/*
+	 * MarelV38B has a TPS3705 watchdog. Spec says that to kick the dog
+	 * we need a positive or negative transition on WDI i.e., our PSC3_9.
+	 */
+	*(vu_long *) MPC5XXX_WU_GPIO_DATA_O ^= GPIO_PSC3_9;
+}
+#endif /* CONFIG_HW_WATCHDOG */