mx31: Add board support for HALE TT-01

This adds basic board support for TT-01 based on
the Bluetechnix i.MX31 SOM. Currently only NOR-Flash
boot is implemented.

Signed-off-by: Helmut Raiger <helmut.raiger@hale.at>
Acked-by: Stefano Babic <sbabic@denx.de>

3 files changed, 283 insertions, 0 deletions

diff --git a/board/hale/tt01/Makefile b/board/hale/tt01/Makefile
new file mode 100644
index 0000000..f6b2854
--- /dev/null
+++ b/board/hale/tt01/Makefile
@@ -0,0 +1,51 @@
+#
+# (C) Copyright 2009 HALE electronic <helmut.raiger@hale.at>
+# (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).o
+COBJS	:= tt01.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)
+	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/hale/tt01/lowlevel_init.S b/board/hale/tt01/lowlevel_init.S
new file mode 100644
index 0000000..6e9dc80
--- /dev/null
+++ b/board/hale/tt01/lowlevel_init.S
@@ -0,0 +1,32 @@
+/*
+ * (C) Copyright 2009 Magnus Lilja <lilja.magnus@gmail.com>
+ * (C) Copyright 2011 Helmut Raiger <helmut.raiger@hale.at>
+ *
+ * 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 <config.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/macro.h>
+
+.globl lowlevel_init
+lowlevel_init:
+	/* Also setup the Peripheral Port Remap register inside the core */
+	ldr	r0, =ARM_PPMRR      /* start from AIPS 2GB region */
+	mcr	p15, 0, r0, c15, c2, 4
+	mov	pc, lr
diff --git a/board/hale/tt01/tt01.c b/board/hale/tt01/tt01.c
new file mode 100644
index 0000000..2995c8f
--- /dev/null
+++ b/board/hale/tt01/tt01.c
@@ -0,0 +1,200 @@
+/*
+ * (C) Copyright 2011 HALE electronic <helmut.raiger@hale.at>
+ * (C) Copyright 2009 Magnus Lilja <lilja.magnus@gmail.com>
+ * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.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 <netdev.h>
+#include <command.h>
+#include <pmic.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define BOARD_STRING	"Board: HALE TT-01"
+
+/* Clock configuration */
+#define CCM_CCMR_SETUP		0x074B0BF5
+
+static void board_setup_clocks(void)
+{
+	struct clock_control_regs *ccm = (struct clock_control_regs *) CCM_BASE;
+	volatile int wait = 0x10000;
+
+	writel(CCM_CCMR_SETUP, &ccm->ccmr);
+	while (wait--)
+		;
+
+	writel(CCM_CCMR_SETUP | CCMR_MPE, &ccm->ccmr);
+	writel((CCM_CCMR_SETUP | CCMR_MPE) & ~CCMR_MDS, &ccm->ccmr);
+
+	/* Set up clock to 532MHz */
+	writel(PDR0_CSI_PODF(0x1ff) | PDR0_PER_PODF(7) |
+			PDR0_HSP_PODF(3) | PDR0_NFC_PODF(5) |
+			PDR0_IPG_PODF(1) | PDR0_MAX_PODF(3) |
+			PDR0_MCU_PODF(0), &ccm->pdr0);
+	writel(PLL_PD(0) | PLL_MFD(51) | PLL_MFI(10) | PLL_MFN(12),
+			&ccm->mpctl);
+	writel(PLL_PD(1) | PLL_MFD(4) | PLL_MFI(12) | PLL_MFN(1),
+			&ccm->spctl);
+}
+
+/* DRAM configuration */
+
+#define ESDMISC_MDDR_SETUP	0x00000004
+#define ESDMISC_MDDR_RESET_DL	0x0000000c
+/*
+ * decoding magic 0x6ac73a = 0b 0110 1010   1100 0111   0011 1010 below:
+ *   tXP = 11, tWTR = 0, tRP = 10, tMRD = 10
+ *   tWR = 1, tRAS = 100, tRRD = 01, tCAS = 11
+ *   tRCD = 011, tRC = 010
+ *  note: all but tWTR (1), tRC (111) are reset defaults,
+ *     the same values work in the jtag configuration
+ *
+ *  Bluetechnix setup has 0x75e73a (for 128MB) =
+ *			0b 0111 0101   1110 0111   0011 1010
+ *   tXP = 11, tWTR = 1, tRP = 01, tMRD = 01
+ *   tWR = 1, tRAS = 110, tRRD = 01, tCAS = 11
+ *   tRCD = 011, tRC = 010
+ */
+#define ESDCFG0_MDDR_SETUP	0x006ac73a
+#define ESDCTL_ROW_COL		(ESDCTL_SDE | ESDCTL_ROW(2) | ESDCTL_COL(2))
+#define ESDCTL_SETTINGS		(ESDCTL_ROW_COL | ESDCTL_SREFR(3) | \
+				 ESDCTL_DSIZ(2) | ESDCTL_BL(1))
+#define ESDCTL_PRECHARGE	(ESDCTL_ROW_COL | ESDCTL_CMD_PRECHARGE)
+#define ESDCTL_AUTOREFRESH	(ESDCTL_ROW_COL | ESDCTL_CMD_AUTOREFRESH)
+#define ESDCTL_LOADMODEREG	(ESDCTL_ROW_COL | ESDCTL_CMD_LOADMODEREG)
+#define ESDCTL_RW		ESDCTL_SETTINGS
+
+static void board_setup_sdram(void)
+{
+	u32 *pad;
+	struct esdc_regs *esdc = (struct esdc_regs *)ESDCTL_BASE_ADDR;
+
+	/*
+	 * setup pad control for the controller pins
+	 * no loopback, no pull, no keeper, no open drain,
+	 * standard input, standard drive, slow slew rate
+	 */
+	for (pad = (u32 *) IOMUXC_SW_PAD_CTL_SDCKE1_SDCLK_SDCLK_B;
+			pad <= (u32 *) IOMUXC_SW_PAD_CTL_VPG0_VPG1_A0; pad++)
+		*pad = 0;
+
+	/* set up MX31 DDR Memory Controller */
+	writel(ESDMISC_MDDR_SETUP, &esdc->misc);
+	writel(ESDCFG0_MDDR_SETUP, &esdc->cfg0);
+
+	/* perform DDR init sequence for CSD0 */
+	writel(ESDCTL_PRECHARGE, &esdc->ctl0);
+	writel(0x12344321, CSD0_BASE+0x0f00);
+	writel(ESDCTL_AUTOREFRESH, &esdc->ctl0);
+	writel(0x12344321, CSD0_BASE);
+	writel(0x12344321, CSD0_BASE);
+	writel(ESDCTL_LOADMODEREG, &esdc->ctl0);
+	writeb(0xda, CSD0_BASE+0x33);
+	writeb(0xff, CSD0_BASE+0x1000000);
+	writel(ESDCTL_RW, &esdc->ctl0);
+	writel(0xDEADBEEF, CSD0_BASE);
+	writel(ESDMISC_MDDR_RESET_DL, &esdc->misc);
+}
+
+static void tt01_spi3_hw_init(void)
+{
+	/* CSPI3 */
+	mx31_gpio_mux(IOMUX_MODE(MUX_CTL_CSPI3_MISO, MUX_CTL_FUNC));
+	mx31_gpio_mux(IOMUX_MODE(MUX_CTL_CSPI3_MOSI, MUX_CTL_FUNC));
+	mx31_gpio_mux(IOMUX_MODE(MUX_CTL_CSPI3_SCLK, MUX_CTL_FUNC));
+	/* CSPI3, SS0 = Atlas */
+	mx31_gpio_mux(IOMUX_MODE(MUX_CTL_CSPI2_SS0, MUX_CTL_ALT1));
+
+	/* start CSPI3 clock (3 = always on except if PLL off) */
+	setbits_le32(CCM_CGR0, 3 << 16);
+}
+
+int dram_init(void)
+{
+	/* dram_init must store complete ramsize in gd->ram_size */
+	gd->ram_size = get_ram_size((long *) CONFIG_SYS_SDRAM_BASE,
+			PHYS_SDRAM_1_SIZE);
+	return 0;
+}
+
+int board_early_init_f(void)
+{
+	/* CS4: FPGA incl. network controller */
+	struct mxc_weimcs cs4 = {
+		/*    sp wp bcd bcs psz pme sync dol cnc wsc ew wws edc */
+		CSCR_U(0, 0,  0,  0,  0,  0,   0,  0,  3, 28, 1,  7,  6),
+		/*   oea oen ebwa ebwn csa ebc dsz csn psr cre wrap csen */
+		CSCR_L(4,  4,   4,  10,  4,  0,  5,  4,  0,  0,   0,   1),
+		/*  ebra ebrn rwa rwn mum lah lbn lba dww dct wwu age cnc2 fce*/
+		CSCR_A(4,   4,  4,  4,  0,  1,  4,  3,  0,  0,  0,  0,  1,   0)
+	};
+
+	/* this seems essential, won't start without, but why? */
+	writel(IPU_CONF_DI_EN, (u32 *) IPU_CONF);
+
+	board_setup_clocks();
+	board_setup_sdram();
+	mxc_setup_weimcs(4, &cs4);
+
+	/* Setup UART2 and SPI3 pins */
+	mx31_uart2_hw_init();
+	tt01_spi3_hw_init();
+
+	return 0;
+}
+
+int board_init(void)
+{
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+	return 0;
+}
+
+int board_late_init(void)
+{
+	pmic_init();
+
+#ifdef CONFIG_HW_WATCHDOG
+	mxc_hw_watchdog_enable();
+#endif
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	puts(BOARD_STRING "\n");
+	return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+	int rc = 0;
+#ifdef CONFIG_SMC911X
+	rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
+#endif
+	return rc;
+}