mpc52xx: add support for the IPEK01 board

This patch adds support for the board IPEK01 based on the MPC5200.
The Futjitsu Lime graphics controller is configured in 16 bpp mode.

Signed-off-by: Wolfgang Grandegger <wg@denx.de>

1 files changed, 282 insertions, 0 deletions

diff --git a/board/ipek01/ipek01.c b/board/ipek01/ipek01.c
new file mode 100644
index 0000000..463a81b
--- /dev/null
+++ b/board/ipek01/ipek01.c
@@ -0,0 +1,282 @@
+/*
+ * (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 2006
+ * MicroSys GmbH
+ *
+ * (C) Copyright 2009
+ * Wolfgang Grandegger, DENX Software Engineering, wg@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 <netdev.h>
+#include <miiphy.h>
+#include <libfdt.h>
+#include <mb862xx.h>
+#include <video_fb.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+#ifdef CONFIG_OF_LIBFDT
+#include <fdt_support.h>
+#endif /* CONFIG_OF_LIBFDT */
+
+/* mt46v16m16-75 */
+#ifdef CONFIG_MPC5200_DDR
+/* Settings for XLB = 132 MHz */
+#define SDRAM_MODE	0x018D0000
+#define SDRAM_EMODE	0x40090000
+#define SDRAM_CONTROL	0x714f0f00
+#define SDRAM_CONFIG1	0x73722930
+#define SDRAM_CONFIG2	0x47770000
+#define SDRAM_TAPDELAY	0x10000000
+#else
+#error SDRAM is not supported on this board
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static void sdram_start (int hi_addr)
+{
+	struct mpc5xxx_sdram *sdram = (struct mpc5xxx_sdram *)MPC5XXX_SDRAM;
+	long hi_addr_bit = hi_addr ? 0x01000000 : 0;
+
+	/* unlock mode register */
+	out_be32 (&sdram->ctrl, SDRAM_CONTROL | 0x80000000 | hi_addr_bit);
+
+	/* precharge all banks */
+	out_be32 (&sdram->ctrl, SDRAM_CONTROL | 0x80000002 | hi_addr_bit);
+
+	/* set mode register: extended mode */
+	out_be32 (&sdram->mode, SDRAM_EMODE);
+
+	/* set mode register: reset DLL */
+	out_be32 (&sdram->mode, SDRAM_MODE | 0x04000000);
+
+	/* precharge all banks */
+	out_be32 (&sdram->ctrl, SDRAM_CONTROL | 0x80000002 | hi_addr_bit);
+
+	/* auto refresh */
+	out_be32 (&sdram->ctrl, SDRAM_CONTROL | 0x80000004 | hi_addr_bit);
+
+	/* set mode register */
+	out_be32 (&sdram->mode, SDRAM_MODE);
+
+	/* normal operation */
+	out_be32 (&sdram->ctrl, SDRAM_CONTROL | hi_addr_bit);
+}
+
+/*
+ * ATTENTION: Although partially referenced initdram does NOT make real
+ *            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)
+{
+	struct mpc5xxx_mmap_ctl *mmap_ctl =
+		(struct mpc5xxx_mmap_ctl *)CONFIG_SYS_MBAR;
+	struct mpc5xxx_sdram *sdram = (struct mpc5xxx_sdram *)MPC5XXX_SDRAM;
+	struct mpc5xxx_cdm *cdm = (struct mpc5xxx_cdm *)MPC5XXX_CDM;
+	ulong dramsize = 0;
+	ulong dramsize2 = 0;
+	ulong test1, test2;
+
+	/* setup SDRAM chip selects */
+	out_be32 (&mmap_ctl->sdram0, 0x0000001e);	/* 2G at 0x0 */
+	out_be32 (&mmap_ctl->sdram1, 0x00000000);	/* disabled */
+
+	/* setup config registers */
+	out_be32 (&sdram->config1, SDRAM_CONFIG1);
+	out_be32 (&sdram->config2, SDRAM_CONFIG2);
+
+	/* set tap delay */
+	out_be32 (&cdm->porcfg, SDRAM_TAPDELAY);
+
+	/* find RAM size using SDRAM CS0 only */
+	sdram_start (0);
+	test1 = get_ram_size ((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
+	sdram_start (1);
+	test2 = get_ram_size ((long *)CONFIG_SYS_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)
+		out_be32 (&mmap_ctl->sdram0,
+			  0x13 + __builtin_ffs (dramsize >> 20) - 1);
+	else
+		out_be32 (&mmap_ctl->sdram1, 0);	/* disabled */
+
+	/*
+	 * 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."
+	 */
+	out_be32 (&sdram->sdelay, 0x04);
+
+	return dramsize + dramsize2;
+}
+
+int checkboard (void)
+{
+	puts ("Board: IPEK01 \n");
+	return 0;
+}
+
+void flash_preinit (void)
+{
+	struct mpc5xxx_lpb *lpb = (struct mpc5xxx_lpb *)MPC5XXX_LPB;
+
+	/*
+	 * Now, when we are in RAM, enable flash write
+	 * access for detection process.
+	 * Note that CS_BOOT cannot be cleared when
+	 * executing in flash.
+	 */
+	clrbits_be32 (&lpb->cs0_cfg, 0x1);	/* clear RO */
+}
+
+void flash_afterinit (ulong start, ulong size)
+{
+	struct mpc5xxx_mmap_ctl *mmap_ctl =
+		(struct mpc5xxx_mmap_ctl *)CONFIG_SYS_MBAR;
+
+#if defined(CONFIG_BOOT_ROM)
+	/* adjust mapping */
+	out_be32 (&mmap_ctl->cs1_start, START_REG (start));
+	out_be32 (&mmap_ctl->cs1_stop, STOP_REG (start, size));
+#else
+	/* adjust mapping */
+	out_be32 (&mmap_ctl->boot_start, START_REG (start));
+	out_be32 (&mmap_ctl->cs0_start, START_REG (start));
+	out_be32 (&mmap_ctl->boot_stop, STOP_REG (start, size));
+	out_be32 (&mmap_ctl->cs0_stop, STOP_REG (start, size));
+#endif
+}
+
+extern flash_info_t flash_info[];	/* info for FLASH chips */
+
+int misc_init_r (void)
+{
+	/* adjust flash start */
+	gd->bd->bi_flashstart = flash_info[0].start[0];
+	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
+
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+void ft_board_setup (void *blob, bd_t * bd)
+{
+	ft_cpu_setup (blob, bd);
+	fdt_fixup_memory (blob, (u64) bd->bi_memstart, (u64) bd->bi_memsize);
+}
+#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
+
+int board_eth_init(bd_t *bis)
+{
+        cpu_eth_init(bis); /* Built in FEC comes first */
+        return pci_eth_init(bis);
+}
+
+#ifdef CONFIG_VIDEO
+extern GraphicDevice mb862xx;
+
+static const gdc_regs init_regs[] = {
+	{0x0100, 0x00000900},
+	{0x0020, 0x80190257},
+	{0x0024, 0x00000000},
+	{0x0028, 0x00000000},
+	{0x002c, 0x00000000},
+	{0x0110, 0x00000000},
+	{0x0114, 0x00000000},
+	{0x0118, 0x02570320},
+	{0x0004, 0x041f0000},
+	{0x0008, 0x031f031f},
+	{0x000c, 0x067f0347},
+	{0x0010, 0x02780000},
+	{0x0014, 0x0257025c},
+	{0x0018, 0x00000000},
+	{0x001c, 0x02570320},
+	{0x0100, 0x80010900},
+	{0x0, 0x0}
+};
+
+const gdc_regs *board_get_regs (void)
+{
+	return init_regs;
+}
+
+/* Returns Lime base address */
+unsigned int board_video_init (void)
+{
+	if (mb862xx_probe (CONFIG_SYS_LIME_BASE) != MB862XX_TYPE_LIME)
+		return 0;
+
+	mb862xx.winSizeX = 800;
+	mb862xx.winSizeY = 600;
+	mb862xx.gdfIndex = GDF_15BIT_555RGB;
+	mb862xx.gdfBytesPP = 2;
+
+	return CONFIG_SYS_LIME_BASE;
+}
+
+#if defined(CONFIG_CONSOLE_EXTRA_INFO)
+/*
+ * Return text to be printed besides the logo.
+ */
+void video_get_info_str (int line_number, char *info)
+{
+	if (line_number == 1)
+		strcpy (info, " Board: IPEK01");
+	else
+		info[0] = '\0';
+}
+#endif
+#endif /* CONFIG_VIDEO */