Add support for the digsy MTC board.

This is the InterControl custom device based on the MPC5200B chip.

Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>

1 files changed, 307 insertions, 0 deletions

diff --git a/board/digsy_mtc/digsy_mtc.c b/board/digsy_mtc/digsy_mtc.c
new file mode 100644
index 0000000..e231c10
--- /dev/null
+++ b/board/digsy_mtc/digsy_mtc.c
@@ -0,0 +1,307 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2004
+ * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
+ *
+ * (C) Copyright 2005-2009
+ * Modified for InterControl digsyMTC MPC5200 board by
+ * Frank Bodammer, GCD Hard- & Software GmbH,
+ *                 frank.bodammer@gcd-solutions.de
+ *
+ * (C) Copyright 2009
+ * Grzegorz Bernacki, Semihalf, gjb@semihalf.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 <net.h>
+#include <pci.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include "eeprom.h"
+#include "is42s16800a-7t.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+extern int usb_cpu_init(void);
+
+#ifndef CONFIG_SYS_RAMBOOT
+static void sdram_start(int hi_addr)
+{
+	long hi_addr_bit = hi_addr ? 0x01000000 : 0;
+	long control = SDRAM_CONTROL | hi_addr_bit;
+
+	/* unlock mode register */
+	out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000000);
+
+	/* precharge all banks */
+	out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000002);
+
+	/* auto refresh */
+	out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000004);
+
+	/* set mode register */
+	out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_MODE);
+
+	/* normal operation */
+	out_be32((void *)MPC5XXX_SDRAM_CTRL, control);
+}
+#endif
+
+/*
+ * ATTENTION: Although partially referenced initdram does NOT make real use
+ *            use of CONFIG_SYS_SDRAM_BASE. The code does not work if
+ *            CONFIG_SYS_SDRAM_BASE is something else than 0x00000000.
+ */
+
+phys_size_t initdram(int board_type)
+{
+	ulong dramsize = 0;
+	ulong dramsize2 = 0;
+	uint svr, pvr;
+#ifndef CONFIG_SYS_RAMBOOT
+	ulong test1, test2;
+
+	/* setup SDRAM chip selects */
+	out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0x0000001C); /* 512MB at 0x0 */
+	out_be32((void *)MPC5XXX_SDRAM_CS1CFG, 0x80000000); /* disabled */
+
+	/* setup config registers */
+	out_be32((void *)MPC5XXX_SDRAM_CONFIG1, SDRAM_CONFIG1);
+	out_be32((void *)MPC5XXX_SDRAM_CONFIG2, SDRAM_CONFIG2);
+
+	/* find RAM size using SDRAM CS0 only */
+	sdram_start(0);
+	test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x08000000);
+	sdram_start(1);
+	test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x08000000);
+	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((void *)MPC5XXX_SDRAM_CS0CFG,
+			(0x13 + __builtin_ffs(dramsize >> 20) - 1));
+	} else {
+		out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0); /* disabled */
+	}
+
+	/* let SDRAM CS1 start right after CS0 */
+	out_be32((void *)MPC5XXX_SDRAM_CS1CFG, dramsize + 0x0000001C);
+
+	/* find RAM size using SDRAM CS1 only */
+	test1 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize),
+			0x08000000);
+		dramsize2 = test1;
+
+	/* 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((void *)MPC5XXX_SDRAM_CS1CFG, (dramsize |
+			(0x13 + __builtin_ffs(dramsize2 >> 20) - 1)));
+	} else {
+		out_be32((void *)MPC5XXX_SDRAM_CS1CFG, dramsize); /* disabled */
+	}
+
+#else /* CONFIG_SYS_RAMBOOT */
+
+	/* retrieve size of memory connected to SDRAM CS0 */
+	dramsize = in_be32((void *)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((void *)MPC5XXX_SDRAM_CS1CFG) & 0xFF;
+	if (dramsize2 >= 0x13)
+		dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
+	else
+		dramsize2 = 0;
+
+#endif /* CONFIG_SYS_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((void *)MPC5XXX_SDRAM_SDELAY, 0x04);
+
+	return dramsize + dramsize2;
+}
+
+int checkboard(void)
+{
+	char *s = getenv("serial#");
+
+	puts ("Board: InterControl digsyMTC");
+	if (s != NULL) {
+		puts(", ");
+		puts(s);
+	}
+	putc('\n');
+
+	return 0;
+}
+
+int board_early_init_r(void)
+{
+	/*
+	 * Now, when we are in RAM, enable flash write access for detection
+	 * process.  Note that CS_BOOT cannot be cleared when executing in
+	 * flash.
+	 */
+	/* disable CS_BOOT */
+	clrbits_be32((void *)MPC5XXX_ADDECR, (1 << 25));
+	/* enable CS1 */
+	setbits_be32((void *)MPC5XXX_ADDECR, (1 << 17));
+	/* enable CS0 */
+	setbits_be32((void *)MPC5XXX_ADDECR, (1 << 16));
+
+#if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
+	/* Low level USB init, required for proper kernel operation */
+	usb_cpu_init();
+#endif
+	return (0);
+}
+
+void board_get_enetaddr (uchar * enet)
+{
+	ushort read = 0;
+	ushort addr_of_eth_addr = 0;
+	ushort len_sys = 0;
+	ushort len_sys_cfg = 0;
+
+	/* check identification word */
+	eeprom_read(EEPROM_ADDR, EEPROM_ADDR_IDENT, (uchar *)&read, 2);
+	if (read != EEPROM_IDENT)
+		return;
+
+	/* calculate offset of config area */
+	eeprom_read(EEPROM_ADDR, EEPROM_ADDR_LEN_SYS, (uchar *)&len_sys, 2);
+	eeprom_read(EEPROM_ADDR, EEPROM_ADDR_LEN_SYSCFG,
+		(uchar *)&len_sys_cfg, 2);
+	addr_of_eth_addr = (len_sys + len_sys_cfg + EEPROM_ADDR_ETHADDR) << 1;
+	if (addr_of_eth_addr >= EEPROM_LEN)
+		return;
+
+	eeprom_read(EEPROM_ADDR, addr_of_eth_addr, enet, 6);
+}
+
+int misc_init_r(void)
+{
+	uchar enetaddr[6];
+
+	if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
+		board_get_enetaddr(enetaddr);
+		eth_setenv_enetaddr("ethaddr", enetaddr);
+	}
+
+	return 0;
+}
+
+#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
+
+#ifdef CONFIG_CMD_IDE
+
+#ifdef CONFIG_IDE_RESET
+
+void init_ide_reset(void)
+{
+	debug ("init_ide_reset\n");
+
+	/* set gpio output value to 1 */
+	setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
+	/* open drain output */
+	setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
+	/* direction output */
+	setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
+	/* enable gpio */
+	setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));
+
+}
+
+void ide_set_reset(int idereset)
+{
+	debug ("ide_reset(%d)\n", idereset);
+
+	/* set gpio output value to 0 */
+	clrbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
+	/* open drain output */
+	setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
+	/* direction output */
+	setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
+	/* enable gpio */
+	setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));
+
+	udelay(10000);
+
+	/* set gpio output value to 1 */
+	setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25));
+	/* open drain output */
+	setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25));
+	/* direction output */
+	setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25));
+	/* enable gpio */
+	setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25));
+}
+#endif /* CONFIG_IDE_RESET */
+
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+void ft_board_setup(void *blob, bd_t *bd)
+{
+	ft_cpu_setup(blob, bd);
+}
+#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
+
+#endif /* CONFIG_CMD_IDE */
+