mpc52xx: added support for the MPC5200 based MUC.MC52 board from MAN.

Signed-off-by: Heiko Schocher <hs@denx.de>

1 files changed, 400 insertions, 0 deletions

diff --git a/board/mucmc52/mucmc52.c b/board/mucmc52/mucmc52.c
new file mode 100644
index 00000000000..ae3ca24221a
--- /dev/null
+++ b/board/mucmc52/mucmc52.c
@@ -0,0 +1,400 @@
+/*
+ * (C) Copyright 2003-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2004
+ * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
+ *
+ * (C) Copyright 2004
+ * Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de
+ *
+ * (C) Copyright 2008
+ * Heiko Schocher, DENX Software Engineering, hs@denx.de.
+ *
+ * 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 <pci.h>
+#include <malloc.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+#ifndef CFG_RAMBOOT
+static void sdram_start (int hi_addr)
+{
+	long hi_addr_bit = hi_addr ? 0x01000000 : 0;
+
+	/* unlock mode register */
+	out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CTRL,
+		(SDRAM_CONTROL | 0x80000000 | hi_addr_bit));
+	__asm__ volatile ("sync");
+
+	/* precharge all banks */
+	out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CTRL,
+		(SDRAM_CONTROL | 0x80000002 | hi_addr_bit));
+	__asm__ volatile ("sync");
+
+#if SDRAM_DDR
+	/* set mode register: extended mode */
+	out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_MODE, (SDRAM_EMODE));
+	__asm__ volatile ("sync");
+
+	/* set mode register: reset DLL */
+	out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_MODE,
+		(SDRAM_MODE | 0x04000000));
+	__asm__ volatile ("sync");
+#endif
+
+	/* precharge all banks */
+	out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CTRL,
+		(SDRAM_CONTROL | 0x80000002 | hi_addr_bit));
+	__asm__ volatile ("sync");
+
+	/* auto refresh */
+	out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CTRL,
+		(SDRAM_CONTROL | 0x80000004 | hi_addr_bit));
+	__asm__ volatile ("sync");
+
+	/* set mode register */
+	out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_MODE, (SDRAM_MODE));
+	__asm__ volatile ("sync");
+
+	/* normal operation */
+	out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CTRL,
+		(SDRAM_CONTROL | hi_addr_bit));
+	__asm__ volatile ("sync");
+}
+#endif
+
+/*
+ * ATTENTION: Although partially referenced initdram does NOT make real use
+ *	      use of CFG_SDRAM_BASE. The code does not work if CFG_SDRAM_BASE
+ *	      is something else than 0x00000000.
+ */
+
+phys_size_t initdram (int board_type)
+{
+	ulong dramsize = 0;
+	ulong dramsize2 = 0;
+	uint svr, pvr;
+
+#ifndef CFG_RAMBOOT
+	ulong test1, test2;
+
+	/* setup SDRAM chip selects */
+	out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS0CFG, 0x0000001c); /* 512MB at 0x0 */
+	out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS1CFG, 0x80000000);/* disabled */
+	__asm__ volatile ("sync");
+
+	/* setup config registers */
+	out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CONFIG1, SDRAM_CONFIG1);
+	out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CONFIG2, SDRAM_CONFIG2);
+	__asm__ volatile ("sync");
+
+#if SDRAM_DDR
+	/* set tap delay */
+	out_be32 ((unsigned __iomem *)MPC5XXX_CDM_PORCFG, SDRAM_TAPDELAY);
+	__asm__ volatile ("sync");
+#endif
+
+	/* find RAM size using SDRAM CS0 only */
+	sdram_start (0);
+	test1 = get_ram_size ((long *)CFG_SDRAM_BASE, 0x20000000);
+	sdram_start(1);
+	test2 = get_ram_size ((long *)CFG_SDRAM_BASE, 0x20000000);
+	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) {
+		out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS0CFG,
+			(0x13 + __builtin_ffs(dramsize >> 20) - 1));
+	} else {
+		out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS0CFG, 0); /* disabled */
+	}
+
+	/* let SDRAM CS1 start right after CS0 */
+	out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS1CFG, (dramsize + 0x0000001c));/*512MB*/
+
+	/* find RAM size using SDRAM CS1 only */
+	if (!dramsize)
+		sdram_start (0);
+	test2 = test1 = get_ram_size ((long *)(CFG_SDRAM_BASE + dramsize), 0x20000000);
+	if (!dramsize) {
+		sdram_start (1);
+		test2 = get_ram_size ((long *)(CFG_SDRAM_BASE + dramsize), 0x20000000);
+	}
+	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) {
+		out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS1CFG,
+			(dramsize | (0x13 + __builtin_ffs(dramsize2 >> 20) - 1)));
+	} else {
+		out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS1CFG, dramsize); /* disabled */
+	}
+
+#else /* CFG_RAMBOOT */
+
+	/* retrieve size of memory connected to SDRAM CS0 */
+	dramsize = in_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_CS0CFG) & 0xFF;
+	if (dramsize >= 0x13) {
+		dramsize = (1 << (dramsize - 0x13)) << 20;
+	} else {
+		dramsize = 0;
+	}
+
+	/* retrieve size of memory connected to SDRAM CS1 */
+	dramsize2 = in_be32 ((unsigned __iomem *)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)) {
+
+                out_be32 ((unsigned __iomem *)MPC5XXX_SDRAM_SDELAY, 0x04);
+                __asm__ volatile ("sync");
+        }
+
+	return dramsize + dramsize2;
+}
+
+int checkboard (void)
+{
+	puts ("Board: MUC.MC-52 HW WDT ");
+#if defined(CONFIG_HW_WATCHDOG)
+	puts ("enabled\n");
+#else
+	puts ("disabled\n");
+#endif
+	return 0;
+}
+
+#ifdef CONFIG_PREBOOT
+
+static uchar kbd_magic_prefix[]		= "key_magic";
+static uchar kbd_command_prefix[]	= "key_cmd";
+
+#define S1_ROT	0xf0
+#define S2_Q	0x40
+#define S2_M	0x20
+
+struct kbd_data_t {
+	char s1;
+	char s2;
+};
+
+struct kbd_data_t* get_keys (struct kbd_data_t *kbd_data)
+{
+	kbd_data->s1 = in_8 ((volatile uchar*)CFG_STATUS1_BASE);
+	kbd_data->s2 = in_8 ((volatile uchar*)CFG_STATUS2_BASE);
+
+	return kbd_data;
+}
+
+static int compare_magic (const struct kbd_data_t *kbd_data, char *str)
+{
+	char s1 = str[0];
+	char s2;
+
+	if (s1 >= '0' && s1 <= '9')
+		s1 -= '0';
+	else if (s1 >= 'a' && s1 <= 'f')
+		s1 = s1 - 'a' + 10;
+	else if (s1 >= 'A' && s1 <= 'F')
+		s1 = s1 - 'A' + 10;
+	else
+		return -1;
+
+	if (((S1_ROT & kbd_data->s1) >> 4) != s1)
+		return -1;
+
+	s2 = (S2_Q | S2_M) & kbd_data->s2;
+
+	switch (str[1]) {
+	case 'q':
+	case 'Q':
+		if (s2 == S2_Q)
+			return -1;
+		break;
+	case 'm':
+	case 'M':
+		if (s2 == S2_M)
+			return -1;
+		break;
+	case '\0':
+		if (s2 == (S2_Q | S2_M))
+			return 0;
+	default:
+		return -1;
+	}
+
+	if (str[2])
+		return -1;
+
+	return 0;
+}
+
+static char *key_match (const struct kbd_data_t *kbd_data)
+{
+	char magic[sizeof (kbd_magic_prefix) + 1];
+	char *suffix;
+	char *kbd_magic_keys;
+
+	/*
+	 * The following string defines the characters that can be appended
+	 * to "key_magic" to form the names of environment variables that
+	 * hold "magic" key codes, i. e. such key codes that can cause
+	 * pre-boot actions. If the string is empty (""), then only
+	 * "key_magic" is checked (old behaviour); the string "125" causes
+	 * checks for "key_magic1", "key_magic2" and "key_magic5", etc.
+	 */
+	if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
+		kbd_magic_keys = "";
+
+	/* loop over all magic keys;
+	 * use '\0' suffix in case of empty string
+	 */
+	for (suffix = kbd_magic_keys; *suffix ||
+		     suffix == kbd_magic_keys; ++suffix) {
+		sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
+
+		if (compare_magic(kbd_data, getenv(magic)) == 0) {
+			char cmd_name[sizeof (kbd_command_prefix) + 1];
+			char *cmd;
+
+			sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
+			cmd = getenv (cmd_name);
+
+			return (cmd);
+		}
+	}
+
+	return (NULL);
+}
+
+#endif /* CONFIG_PREBOOT */
+
+int misc_init_r (void)
+{
+#ifdef CONFIG_PREBOOT
+	struct kbd_data_t kbd_data;
+	/* Decode keys */
+	char *str = strdup (key_match (get_keys (&kbd_data)));
+	/* Set or delete definition */
+	setenv ("preboot", str);
+	free (str);
+#endif /* CONFIG_PREBOOT */
+
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x38), ' ');
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x39), ' ');
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x3A), ' ');
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x3B), ' ');
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x3C), ' ');
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x3D), ' ');
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x3E), ' ');
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x3F), ' ');
+
+	return 0;
+}
+
+int board_early_init_r (void)
+{
+	out_be32 ((unsigned __iomem *)MPC5XXX_BOOTCS_CFG, in_be32 ((unsigned __iomem *)MPC5XXX_BOOTCS_CFG) & ~0x1);
+	out_be32 ((unsigned __iomem *)MPC5XXX_BOOTCS_START, START_REG(CFG_FLASH_BASE));
+	out_be32 ((unsigned __iomem *)MPC5XXX_CS0_START, START_REG(CFG_FLASH_BASE));
+	out_be32 ((unsigned __iomem *)MPC5XXX_BOOTCS_STOP,
+		STOP_REG(CFG_FLASH_BASE, CFG_FLASH_SIZE));
+	out_be32 ((unsigned __iomem *)MPC5XXX_CS0_STOP,
+		STOP_REG(CFG_FLASH_BASE, CFG_FLASH_SIZE));
+	return 0;
+}
+
+int last_stage_init (void)
+{
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x38), 'M');
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x39), 'U');
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x3A), 'C');
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x3B), '.');
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x3C), 'M');
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x3D), 'C');
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x3E), '5');
+        out_8 ((volatile uchar *)(CFG_DISPLAY_BASE + 0x3F), '2');
+
+        return 0;
+}
+
+#if defined(CONFIG_HW_WATCHDOG)
+#define GPT_OUT_0	0x00000027
+#define GPT_OUT_1	0x00000037
+void hw_watchdog_reset (void)
+{
+	/* Trigger HW Watchdog with TIMER_0 */
+	out_be32 ((unsigned __iomem *)MPC5XXX_GPT0_ENABLE, GPT_OUT_1);
+	out_be32 ((unsigned __iomem *)MPC5XXX_GPT0_ENABLE, GPT_OUT_0);
+}
+#endif
+
+#ifdef	CONFIG_PCI
+static struct pci_controller hose;
+
+extern void pci_mpc5xxx_init (struct pci_controller *);
+
+void pci_init_board (void)
+{
+	pci_mpc5xxx_init (&hose);
+}
+#endif