qong: support for Dave/DENX QongEVB-LITE board

This patch adds support for Dave/DENX QongEVB-LITE i.MX31-based board.

Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

6 files changed, 493 insertions, 0 deletions

diff --git a/board/davedenx/qong/Makefile b/board/davedenx/qong/Makefile
new file mode 100644
index 0000000..93e1985
--- /dev/null
+++ b/board/davedenx/qong/Makefile
@@ -0,0 +1,53 @@
+#
+# (C) Copyright 2009
+# Ilya Yanok, Emcraft Systems Ltd, <yanok@emcraft.com>
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd@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 $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(BOARD).a
+
+COBJS	:= qong.o
+SOBJS	:= lowlevel_init.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/davedenx/qong/config.mk b/board/davedenx/qong/config.mk
new file mode 100644
index 0000000..d8d0a57
--- /dev/null
+++ b/board/davedenx/qong/config.mk
@@ -0,0 +1 @@
+TEXT_BASE = 0x8ff00000
diff --git a/board/davedenx/qong/lowlevel_init.S b/board/davedenx/qong/lowlevel_init.S
new file mode 100644
index 0000000..198dd76
--- /dev/null
+++ b/board/davedenx/qong/lowlevel_init.S
@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2009, Emcraft Systems, Ilya Yanok <yanok@emcraft.com>
+ *
+ * Based on board/freescale/mx31ads/lowlevel_init.S
+ * by Guennadi Liakhovetski.
+ *
+ * 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 <asm/arch/mx31-regs.h>
+
+.macro REG reg, val
+	ldr r2, =\reg
+	ldr r3, =\val
+	str r3, [r2]
+.endm
+
+.macro REG8 reg, val
+	ldr r2, =\reg
+	ldr r3, =\val
+	strb r3, [r2]
+.endm
+
+.macro DELAY loops
+	ldr r2, =\loops
+1:
+	subs	r2, r2, #1
+	nop
+	bcs 1b
+.endm
+
+/* RedBoot: To support 133MHz DDR */
+.macro init_drive_strength
+	/*
+	 * Disable maximum drive strength SDRAM/DDR lines by clearing DSE1 bits
+	 * in SW_PAD_CTL registers
+	 */
+
+	/* SDCLK */
+	ldr r1, =IOMUXC_SW_PAD_CTL(0x2b)
+	ldr r0, [r1, #0x6C]
+	bic r0, r0, #(1 << 12)
+	str r0, [r1, #0x6C]
+
+	/* CAS */
+	ldr r0, [r1, #0x70]
+	bic r0, r0, #(1 << 22)
+	str r0, [r1, #0x70]
+
+	/* RAS */
+	ldr r0, [r1, #0x74]
+	bic r0, r0, #(1 << 2)
+	str r0, [r1, #0x74]
+
+	/* CS2 (CSD0) */
+	ldr r0, [r1, #0x7C]
+	bic r0, r0, #(1 << 22)
+	str r0, [r1, #0x7C]
+
+	/* DQM3 */
+	ldr r0, [r1, #0x84]
+	bic r0, r0, #(1 << 22)
+	str r0, [r1, #0x84]
+
+	/* DQM2, DQM1, DQM0, SD31-SD0, A25-A0, MA10 (0x288..0x2DC) */
+	ldr r2, =22	/* (0x2E0 - 0x288) / 4 = 22 */
+pad_loop:
+	ldr r0, [r1, #0x88]
+	bic r0, r0, #(1 << 22)
+	bic r0, r0, #(1 << 12)
+	bic r0, r0, #(1 << 2)
+	str r0, [r1, #0x88]
+	add r1, r1, #4
+	subs r2, r2, #0x1
+	bne pad_loop
+.endm /* init_drive_strength */
+
+.globl lowlevel_init
+lowlevel_init:
+
+	init_drive_strength
+
+	/* Image Processing Unit: */
+	/* Too early to switch display on? */
+	/* Switch on Display Interface */
+	REG	IPU_CONF, IPU_CONF_DI_EN
+	/* Clock Control Module: */
+	REG	CCM_CCMR, 0x074B0BF5		/* Use CKIH, MCU PLL off */
+
+	DELAY 0x40000
+
+	REG	CCM_CCMR, 0x074B0BF5 | CCMR_MPE			/* MCU PLL on */
+	/* Switch to MCU PLL */
+	REG	CCM_CCMR, (0x074B0BF5 | CCMR_MPE) & ~CCMR_MDS
+
+	/* 399-133-66.5 */
+	ldr	r0, =CCM_BASE
+	ldr	r1, =0xFF871650
+	/* PDR0 */
+	str	r1, [r0, #0x4]
+	ldr	r1, MPCTL_PARAM_399
+	/* MPCTL */
+	str	r1, [r0, #0x10]
+
+	/* Set UPLL=240MHz, USB=60MHz */
+	ldr	r1, =0x49FCFE7F
+	/* PDR1 */
+	str	r1, [r0, #0x8]
+	ldr	r1, UPCTL_PARAM_240
+	/* UPCTL */
+	str	r1, [r0, #0x14]
+	/* default CLKO to 1/8 of the ARM core */
+	mov	r1, #0x00000208
+	/* COSR */
+	str	r1, [r0, #0x1c]
+
+	/* Default: 1, 4, 12, 1 */
+	REG	CCM_SPCTL, PLL_PD(1) | PLL_MFD(4) | PLL_MFI(12) | PLL_MFN(1)
+
+	/* B8xxxxxx - NAND, 8xxxxxxx - CSD0 RAM */
+	REG	0xB8001010, 0x00000004
+	REG	0xB8001004, ((3 << 21) | /* tXP */	\
+			     (0 << 20) | /* tWTR */	\
+			     (2 << 18) | /* tRP */	\
+			     (1 << 16) | /* tMRD */	\
+			     (0 << 15) | /* tWR */	\
+			     (5 << 12) | /* tRAS */	\
+			     (1 << 10) | /* tRRD */	\
+			     (3 << 8)  | /* tCAS */	\
+			     (2 << 4)  | /* tRCD */	\
+			     (7 << 0)    /* tRC */ )
+	REG	0xB8001000, 0x92100000
+	REG	0x80000f00, 0x12344321
+	REG	0xB8001000, 0xa2100000
+	REG	0x80000000, 0x12344321
+	REG	0x80000000, 0x12344321
+	REG	0xB8001000, 0xb2100000
+	REG8	0x80000033, 0xda
+	REG8	0x81000000, 0xff
+	REG	0xB8001000, ((1 << 31) |				\
+			     (0 << 28) |				\
+			     (0 << 27) |				\
+			     (3 << 24) | /* 14 rows */			\
+			     (2 << 20) | /* 10 cols */			\
+			     (2 << 16) |				\
+			     (4 << 13) | /* 3.91us (64ms/16384) */	\
+			     (0 << 10) |				\
+			     (0 << 8)  |				\
+			     (1 << 7)  |				\
+			     (0 << 0))
+	REG	0x80000000, 0xDEADBEEF
+	REG	0xB8001010, 0x0000000c
+
+	mov	pc, lr
+
+MPCTL_PARAM_399:
+	.word (((1 - 1) << 26) + ((52 - 1) << 16) + (7 << 10) + (35 << 0))
+UPCTL_PARAM_240:
+	.word (((2 - 1) << 26) + ((13 - 1) << 16) + (9 << 10) + (3  << 0))
diff --git a/board/davedenx/qong/qong.c b/board/davedenx/qong/qong.c
new file mode 100644
index 0000000..13b3699
--- /dev/null
+++ b/board/davedenx/qong/qong.c
@@ -0,0 +1,168 @@
+/*
+ *
+ * (c) 2009 Emcraft Systems, Ilya Yanok <yanok@emcraft.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 <netdev.h>
+#include <asm/arch/mx31.h>
+#include <asm/arch/mx31-regs.h>
+#include "qong_fpga.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init (void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = get_ram_size((volatile void *)PHYS_SDRAM_1,
+			PHYS_SDRAM_1_SIZE);
+
+	return 0;
+}
+
+int board_init (void)
+{
+	/* Chip selects */
+	/* CS0: Nor Flash #0 - it must be init'ed when executing from DDR */
+	/* Assumptions: HCLK = 133 MHz, tACC = 130ns */
+	__REG(CSCR_U(0)) = ((0 << 31)	| /* SP */
+						(0 << 30)	| /* WP */
+						(0 << 28)	| /* BCD */
+						(0 << 24)	| /* BCS */
+						(0 << 22)	| /* PSZ */
+						(0 << 21)	| /* PME */
+						(0 << 20)	| /* SYNC */
+						(0 << 16)	| /* DOL */
+						(3 << 14)	| /* CNC */
+						(21 << 8)	| /* WSC */
+						(0 << 7)	| /* EW */
+						(0 << 4)	| /* WWS */
+						(6 << 0)	  /* EDC */
+					   );
+
+	__REG(CSCR_L(0)) = ((2 << 28)	| /* OEA */
+						(1 << 24)	| /* OEN */
+						(3 << 20)	| /* EBWA */
+						(3 << 16)	| /* EBWN */
+						(1 << 12)	| /* CSA */
+						(1 << 11)	| /* EBC */
+						(5 << 8)	| /* DSZ */
+						(1 << 4)	| /* CSN */
+						(0 << 3)	| /* PSR */
+						(0 << 2)	| /* CRE */
+						(0 << 1)	| /* WRAP */
+						(1 << 0)	  /* CSEN */
+					   );
+
+	__REG(CSCR_A(0)) = ((2 << 28)	| /* EBRA */
+						(1 << 24)	| /* EBRN */
+						(2 << 20)	| /* RWA */
+						(2 << 16)	| /* RWN */
+						(0 << 15)	| /* MUM */
+						(0 << 13)	| /* LAH */
+						(2 << 10)	| /* LBN */
+						(0 << 8)	| /* LBA */
+						(0 << 6)	| /* DWW */
+						(0 << 4)	| /* DCT */
+						(0 << 3)	| /* WWU */
+						(0 << 2)	| /* AGE */
+						(0 << 1)	| /* CNC2 */
+						(0 << 0)	  /* FCE */
+					   );
+
+#ifdef CONFIG_QONG_FPGA
+	/* CS1: FPGA/Network Controller/GPIO */
+	/* 16-bit, no DTACK */
+	__REG(CSCR_U(1)) = 0x00000A01;
+	__REG(CSCR_L(1)) = 0x20040501;
+	__REG(CSCR_A(1)) = 0x04020C00;
+
+	/* setup pins for FPGA */
+	mx31_gpio_mux(IOMUX_MODE(0x76, MUX_CTL_GPIO));
+	mx31_gpio_mux(IOMUX_MODE(0x7e, MUX_CTL_GPIO));
+	mx31_gpio_mux(IOMUX_MODE(0x91, MUX_CTL_OUT_FUNC | MUX_CTL_IN_GPIO));
+	mx31_gpio_mux(IOMUX_MODE(0x92, MUX_CTL_GPIO));
+	mx31_gpio_mux(IOMUX_MODE(0x93, MUX_CTL_GPIO));
+#endif
+
+	/* setup pins for UART1 */
+	mx31_gpio_mux(MUX_RXD1__UART1_RXD_MUX);
+	mx31_gpio_mux(MUX_TXD1__UART1_TXD_MUX);
+	mx31_gpio_mux(MUX_RTS1__UART1_RTS_B);
+	mx31_gpio_mux(MUX_CTS1__UART1_CTS_B);
+
+	/* board id for linux */
+	gd->bd->bi_arch_number = MACH_TYPE_QONG;
+	gd->bd->bi_boot_params = (0x80000100);	/* adress of boot parameters */
+
+	return 0;
+}
+
+int checkboard (void)
+{
+	printf("Board: DAVE/DENX QongEVB-LITE\n");
+	return 0;
+}
+
+int misc_init_r (void)
+{
+#ifdef CONFIG_QONG_FPGA
+	u32 tmp;
+
+	/* FPGA reset */
+	/* rstn = 0 */
+	tmp = __REG(GPIO2_BASE + GPIO_DR);
+	tmp &= (~(1 << QONG_FPGA_RST_PIN));
+	__REG(GPIO2_BASE + GPIO_DR) = tmp;
+	/* set the GPIO as output */
+	tmp = __REG(GPIO2_BASE + GPIO_GDIR);
+	tmp |= (1 << QONG_FPGA_RST_PIN);
+	__REG(GPIO2_BASE + GPIO_GDIR) = tmp;
+	/* wait */
+	udelay(30);
+	/* rstn = 1 */
+	tmp = __REG(GPIO2_BASE + GPIO_DR);
+	tmp |= (1 << QONG_FPGA_RST_PIN);
+	__REG(GPIO2_BASE + GPIO_DR) = tmp;
+	/* set interrupt pin as input */
+	__REG(GPIO2_BASE + GPIO_GDIR) = tmp | (1 << QONG_FPGA_IRQ_PIN);
+	/* wait while the FPGA starts */
+	udelay(300);
+
+	tmp = *(volatile u32*)QONG_FPGA_CTRL_VERSION;
+	printf("FPGA:  ");
+	printf("version register = %u.%u.%u\n",
+		(tmp & 0xF000) >> 12, (tmp & 0x0F00) >> 8, tmp & 0x00FF);
+#endif
+
+	return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+#if defined(CONFIG_QONG_FPGA) && defined(CONFIG_DNET)
+	return dnet_eth_initialize(0, (void *)CONFIG_DNET_BASE, -1);
+#else
+	return 0;
+#endif
+}
+
diff --git a/board/davedenx/qong/qong_fpga.h b/board/davedenx/qong/qong_fpga.h
new file mode 100644
index 0000000..b1cb08a
--- /dev/null
+++ b/board/davedenx/qong/qong_fpga.h
@@ -0,0 +1,41 @@
+/*
+ *
+ * (c) 2009 Emcraft Systems, Ilya Yanok <yanok@emcraft.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
+ */
+
+#ifndef QONG_FPGA_H
+#define QONG_FPGA_H
+
+#ifdef CONFIG_QONG_FPGA
+#define QONG_FPGA_CTRL_BASE		CONFIG_FPGA_BASE
+#define QONG_FPGA_CTRL_VERSION		(QONG_FPGA_CTRL_BASE + 0x00000000)
+#define QONG_FPGA_PERIPH_SIZE		(1 << 24)
+
+#define	QONG_FPGA_TCK_PIN		26
+#define	QONG_FPGA_TMS_PIN		25
+#define	QONG_FPGA_TDI_PIN		8
+#define	QONG_FPGA_TDO_PIN		7
+#define	QONG_FPGA_RST_PIN		16
+#define	QONG_FPGA_IRQ_PIN		8
+#endif
+
+#endif /* QONG_FPGA_H */
+
diff --git a/board/davedenx/qong/u-boot.lds b/board/davedenx/qong/u-boot.lds
new file mode 100644
index 0000000..04e0642
--- /dev/null
+++ b/board/davedenx/qong/u-boot.lds
@@ -0,0 +1,58 @@
+/*
+ * (C) Copyright 2009
+ * Ilya Yanok, Emcraft Systems Ltd, <yanok@emcraft.com>
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@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
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+	. = 0x00000000;
+
+	. = ALIGN(4);
+	.text :
+	{
+		cpu/arm1136/start.o	(.text)
+		*(.text)
+	}
+
+	. = ALIGN(4);
+	.rodata : { *(.rodata) }
+
+	. = ALIGN(4);
+	.data : { *(.data) }
+
+	. = ALIGN(4);
+	.got : { *(.got) }
+
+	. = .;
+	__u_boot_cmd_start = .;
+	.u_boot_cmd : { *(.u_boot_cmd) }
+	__u_boot_cmd_end = .;
+
+	. = ALIGN(4);
+	__bss_start = .;
+	.bss : { *(.bss) }
+	_end = .;
+}