arm: pxa: Add support for ICP DAS LP-8x4x

LP-8x4x is a programmable automation controller by ICP DAS. It is
shipped with outdated U-Boot v1.3.0

This patch adds enough supports to boot the board:
 - 128M of 128M SDRAM
 - 32M of 48M NOR Flash memory
 - 1 of 4 Serial consoles (PXA FFUART)
 - 2 of 2 Ethernet controllers (DM9000)

Signed-off-by: Sergey Yanovich <ynvich@gmail.com>
Series-to: u-boot
Series-cc: marex

board/icpdas/lp8x4x/Makefile

@@ -0,0 +1,41 @@
+#
+# ICPDAS LP-8x4x Support
+#
+# Copyright (C) 2013 Sergey Yanovich <ynvich@gmail.com>
+#
+# 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 $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(BOARD).o
+
+COBJS	:= lp8x4x.o
+
+SRCS	:= $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+
+$(LIB):	$(obj).depend $(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################

board/icpdas/lp8x4x/lp8x4x.c

@@ -0,0 +1,147 @@
+/*
+ * ICP DAS LP-8x4x Support
+ *
+ * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
+ * adapted from Voipac PXA270 Support by
+ * Copyright (C) 2013 Sergey Yanovich <ynvich@gmail.com>
+ *
+ * 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 <asm/arch/hardware.h>
+#include <asm/arch/regs-mmc.h>
+#include <asm/arch/pxa.h>
+#include <netdev.h>
+#include <serial.h>
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Miscelaneous platform dependent initialisations
+ */
+int board_init(void)
+{
+	/* We have RAM, disable cache */
+	dcache_disable();
+	icache_disable();
+
+	/* memory and cpu-speed are setup before relocation */
+	/* so we do _nothing_ here */
+
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = 0xa0000100;
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	pxa2xx_dram_init();
+	gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
+	return 0;
+}
+
+void dram_init_banksize(void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+}
+
+#ifdef	CONFIG_CMD_MMC
+int board_mmc_init(bd_t *bis)
+{
+	pxa_mmc_register(0);
+	return 0;
+}
+#endif
+
+#ifdef	CONFIG_CMD_USB
+int usb_board_init(void)
+{
+	writel((UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
+		~(UHCHR_SSEP0 | UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSE),
+		UHCHR);
+
+	writel(readl(UHCHR) | UHCHR_FSBIR, UHCHR);
+
+	while (readl(UHCHR) & UHCHR_FSBIR)
+		continue; /* required by checkpath.pl */
+
+	writel(readl(UHCHR) & ~UHCHR_SSE, UHCHR);
+	writel((UHCHIE_UPRIE | UHCHIE_RWIE), UHCHIE);
+
+	/* Clear any OTG Pin Hold */
+	if (readl(PSSR) & PSSR_OTGPH)
+		writel(readl(PSSR) | PSSR_OTGPH, PSSR);
+
+	writel(readl(UHCRHDA) & ~(0x200), UHCRHDA);
+	writel(readl(UHCRHDA) | 0x100, UHCRHDA);
+
+	/* Set port power control mask bits, only 3 ports. */
+	writel(readl(UHCRHDB) | (0x7<<17), UHCRHDB);
+
+	/* enable port 2 */
+	writel(readl(UP2OCR) | UP2OCR_HXOE | UP2OCR_HXS |
+		UP2OCR_DMPDE | UP2OCR_DPPDE, UP2OCR);
+
+	return 0;
+}
+
+void usb_board_init_fail(void)
+{
+	return;
+}
+
+void usb_board_stop(void)
+{
+	writel(readl(UHCHR) | UHCHR_FHR, UHCHR);
+	udelay(11);
+	writel(readl(UHCHR) & ~UHCHR_FHR, UHCHR);
+
+	writel(readl(UHCCOMS) | 1, UHCCOMS);
+	udelay(10);
+
+	writel(readl(CKEN) & ~CKEN10_USBHOST, CKEN);
+
+	return;
+}
+#endif
+
+#ifdef CONFIG_DRIVER_DM9000
+void lp8x4x_eth1_mac_init(void)
+{
+	u8 eth1addr[8];
+	int i;
+	u8 reg;
+
+	eth_getenv_enetaddr_by_index("eth", 1, eth1addr);
+	if (!is_valid_ether_addr(eth1addr))
+		return;
+
+	for (i = 0, reg = 0x10; i < 6; i++, reg++) {
+		writeb(reg, (u8 *)(DM9000_IO_2));
+		writeb(eth1addr[i], (u8 *)(DM9000_DATA_2));
+	}
+}
+
+int board_eth_init(bd_t *bis)
+{
+	lp8x4x_eth1_mac_init();
+	return dm9000_initialize(bis);
+}
+#endif