[PATCH] Add support for esd mecp5200 board

Signed-off-by: Reinhard Arlt <reinhard.arlt@esd-electronics.com>

1 files changed, 261 insertions, 0 deletions

diff --git a/board/esd/mecp5200/mecp5200.c b/board/esd/mecp5200/mecp5200.c
new file mode 100644
index 0000000..c4b91e9
--- /dev/null
+++ b/board/esd/mecp5200/mecp5200.c
@@ -0,0 +1,261 @@
+/*
+ * (C) Copyright 2003
+ * 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
+ */
+
+/*
+ * pf5200.c - main board support/init for the esd pf5200.
+ */
+
+#include <common.h>
+#include <mpc5xxx.h>
+#include <pci.h>
+#include <command.h>
+
+#include "mt46v16m16-75.h"
+
+void init_power_switch(void);
+
+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");
+
+	/* 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");
+
+	/* 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");
+}
+
+/*
+ * 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.
+ */
+
+long int initdram(int board_type)
+{
+	ulong dramsize = 0;
+	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");
+
+	/* set tap delay */
+	*(vu_long *) MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
+	__asm__ volatile ("sync");
+
+	/* find RAM size using SDRAM CS0 only */
+	sdram_start(0);
+	test1 = get_ram_size(CFG_SDRAM_BASE, 0x80000000);
+	sdram_start(1);
+	test2 = get_ram_size(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;
+		/* let SDRAM CS1 start right after CS0 */
+		*(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;	/* 2G */
+	} else {
+#if 0
+		*(vu_long *) MPC5XXX_SDRAM_CS0CFG = 0;	/* disabled */
+		/* let SDRAM CS1 start right after CS0 */
+		*(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;	/* 2G */
+#else
+		*(vu_long *) MPC5XXX_SDRAM_CS0CFG =
+		    0x13 + __builtin_ffs(0x08000000 >> 20) - 1;
+		/* let SDRAM CS1 start right after CS0 */
+		*(vu_long *) MPC5XXX_SDRAM_CS1CFG = 0x08000000 + 0x0000001e;	/* 2G */
+#endif
+	}
+
+#if 0
+	/* find RAM size using SDRAM CS1 only */
+	sdram_start(0);
+	get_ram_size((ulong *) (CFG_SDRAM_BASE + dramsize), 0x80000000);
+	sdram_start(1);
+	get_ram_size((ulong *) (CFG_SDRAM_BASE + dramsize), 0x80000000);
+	sdram_start(0);
+#endif
+	/* set SDRAM CS1 size according to the amount of RAM found */
+
+	*(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize;	/* disabled */
+
+	init_power_switch();
+	return (dramsize);
+}
+
+int checkboard(void)
+{
+	puts("Board: esd CPX CPU5200 (mecp5200)\n");
+	return 0;
+}
+
+void flash_preinit(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.
+	 */
+	*(vu_long *) MPC5XXX_BOOTCS_CFG &= ~0x1;	/* clear RO */
+}
+
+void flash_afterinit(ulong size)
+{
+	if (size == CFG_FLASH_SIZE) {
+		/* adjust mapping */
+		*(vu_long *) MPC5XXX_BOOTCS_START =
+		    *(vu_long *) MPC5XXX_CS0_START =
+		    START_REG(CFG_BOOTCS_START | size);
+		*(vu_long *) MPC5XXX_BOOTCS_STOP =
+		    *(vu_long *) MPC5XXX_CS0_STOP =
+		    STOP_REG(CFG_BOOTCS_START | size, size);
+	}
+}
+
+#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
+
+#if defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET)
+
+#define GPIO_PSC1_4	0x01000000UL
+
+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;
+}
+
+void ide_set_reset(int idereset)
+{
+	debug("ide_reset(%d)\n", idereset);
+
+	if (idereset)
+		*(vu_long *) MPC5XXX_WU_GPIO_DATA_O &= ~GPIO_PSC1_4;
+	else
+		*(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_PSC1_4;
+}
+#endif				/* defined (CFG_CMD_IDE) && defined (CONFIG_IDE_RESET) */
+
+#define MPC5XXX_SIMPLEIO_GPIO_ENABLE       (MPC5XXX_GPIO + 0x0004)
+#define MPC5XXX_SIMPLEIO_GPIO_DIR          (MPC5XXX_GPIO + 0x000C)
+#define MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT  (MPC5XXX_GPIO + 0x0010)
+#define MPC5XXX_SIMPLEIO_GPIO_DATA_INPUT   (MPC5XXX_GPIO + 0x0014)
+
+#define MPC5XXX_INTERRUPT_GPIO_ENABLE      (MPC5XXX_GPIO + 0x0020)
+#define MPC5XXX_INTERRUPT_GPIO_DIR         (MPC5XXX_GPIO + 0x0028)
+#define MPC5XXX_INTERRUPT_GPIO_DATA_OUTPUT (MPC5XXX_GPIO + 0x002C)
+#define MPC5XXX_INTERRUPT_GPIO_STATUS      (MPC5XXX_GPIO + 0x003C)
+
+#define GPIO_WU6	0x40000000UL
+#define GPIO_USB0       0x00010000UL
+#define GPIO_USB9       0x08000000UL
+#define GPIO_USB9S      0x00080000UL
+
+void init_power_switch(void)
+{
+	debug("init_power_switch\n");
+
+	/* Configure GPIO_WU6 as GPIO output for ATA reset */
+	*(vu_long *) MPC5XXX_WU_GPIO_DATA_O |= GPIO_WU6;
+	*(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_WU6;
+	*(vu_long *) MPC5XXX_WU_GPIO_DIR |= GPIO_WU6;
+	__asm__ volatile ("sync");
+
+	*(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT &= ~GPIO_USB0;
+	*(vu_long *) MPC5XXX_SIMPLEIO_GPIO_ENABLE |= GPIO_USB0;
+	*(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DIR |= GPIO_USB0;
+	__asm__ volatile ("sync");
+
+	*(vu_long *) MPC5XXX_INTERRUPT_GPIO_DATA_OUTPUT &= ~GPIO_USB9;
+	*(vu_long *) MPC5XXX_INTERRUPT_GPIO_ENABLE &= ~GPIO_USB9;
+	__asm__ volatile ("sync");
+
+	if ((*(vu_long *) MPC5XXX_INTERRUPT_GPIO_STATUS & GPIO_USB9S) == 0) {
+		*(vu_long *) MPC5XXX_SIMPLEIO_GPIO_DATA_OUTPUT |= GPIO_USB0;
+		__asm__ volatile ("sync");
+	}
+}