MX35: add support for flea3 board

The flea3 board is a custom board by CarMediaLab used
in automotive.
Network (FEC), NOR, NAND and SPI are supported.

Signed-off-by: Stefano Babic <sbabic@denx.de>

1 files changed, 289 insertions, 0 deletions

diff --git a/board/CarMediaLab/flea3/flea3.c b/board/CarMediaLab/flea3/flea3.c
new file mode 100644
index 0000000..64f4b57
--- /dev/null
+++ b/board/CarMediaLab/flea3/flea3.c
@@ -0,0 +1,289 @@
+/*
+ * Copyright (C) 2007, Guennadi Liakhovetski <lg@denx.de>
+ *
+ * (C) Copyright 2008-2010 Freescale Semiconductor, Inc.
+ *
+ * Copyright (C) 2011, Stefano Babic <sbabic@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 <asm/io.h>
+#include <asm/errno.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/mx35_pins.h>
+#include <asm/arch/iomux.h>
+#include <i2c.h>
+#include <linux/types.h>
+#include <asm/gpio.h>
+#include <asm/arch/sys_proto.h>
+#include <netdev.h>
+
+#ifndef CONFIG_BOARD_EARLY_INIT_F
+#error "CONFIG_BOARD_EARLY_INIT_F must be set for this board"
+#endif
+
+#define CCM_CCMR_CONFIG		0x003F4208
+
+#define ESDCTL_DDR2_CONFIG	0x007FFC3F
+#define ESDCTL_0x92220000	0x92220000
+#define ESDCTL_0xA2220000	0xA2220000
+#define ESDCTL_0xB2220000	0xB2220000
+#define ESDCTL_0x82228080	0x82228080
+#define ESDCTL_DDR2_EMR2	0x04000000
+#define ESDCTL_DDR2_EMR3	0x06000000
+#define ESDCTL_PRECHARGE	0x00000400
+#define ESDCTL_DDR2_EN_DLL	0x02000400
+#define ESDCTL_DDR2_RESET_DLL	0x00000333
+#define ESDCTL_DDR2_MR		0x00000233
+#define ESDCTL_DDR2_OCD_DEFAULT 0x02000780
+#define ESDCTL_DELAY_LINE5	0x00F49F00
+
+static inline void dram_wait(unsigned int count)
+{
+	volatile unsigned int wait = count;
+
+	while (wait--)
+		;
+}
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1,
+		PHYS_SDRAM_1_SIZE);
+
+	return 0;
+}
+
+static void board_setup_sdram_bank(u32 start_address)
+
+{
+	struct esdc_regs *esdc = (struct esdc_regs *)ESDCTL_BASE_ADDR;
+	u32 *cfg_reg, *ctl_reg;
+	u32 val;
+
+	switch (start_address) {
+	case CSD0_BASE_ADDR:
+		cfg_reg = &esdc->esdcfg0;
+		ctl_reg = &esdc->esdctl0;
+		break;
+	case CSD1_BASE_ADDR:
+		cfg_reg = &esdc->esdcfg1;
+		ctl_reg = &esdc->esdctl1;
+		break;
+	default:
+		return;
+	}
+
+	/* Initialize MISC register for DDR2 */
+	val = ESDC_MISC_RST | ESDC_MISC_MDDR_EN | ESDC_MISC_MDDR_DL_RST |
+		ESDC_MISC_DDR_EN | ESDC_MISC_DDR2_EN;
+	writel(val, &esdc->esdmisc);
+	val &= ~(ESDC_MISC_RST | ESDC_MISC_MDDR_DL_RST);
+	writel(val, &esdc->esdmisc);
+
+	/*
+	 * according to DDR2 specs, wait a while before
+	 * the PRECHARGE_ALL command
+	 */
+	dram_wait(0x20000);
+
+	/* Load DDR2 config and timing */
+	writel(ESDCTL_DDR2_CONFIG, cfg_reg);
+
+	/* Precharge ALL */
+	writel(ESDCTL_0x92220000,
+		ctl_reg);
+	writel(0xda, start_address + ESDCTL_PRECHARGE);
+
+	/* Load mode */
+	writel(ESDCTL_0xB2220000,
+		ctl_reg);
+	writeb(0xda, start_address + ESDCTL_DDR2_EMR2); /* EMRS2 */
+	writeb(0xda, start_address + ESDCTL_DDR2_EMR3); /* EMRS3 */
+	writeb(0xda, start_address + ESDCTL_DDR2_EN_DLL); /* Enable DLL */
+	writeb(0xda, start_address + ESDCTL_DDR2_RESET_DLL); /* Reset DLL */
+
+	/* Precharge ALL */
+	writel(ESDCTL_0x92220000,
+		ctl_reg);
+	writel(0xda, start_address + ESDCTL_PRECHARGE);
+
+	/* Set mode auto refresh : at least two refresh are required */
+	writel(ESDCTL_0xA2220000,
+		ctl_reg);
+	writel(0xda, start_address);
+	writel(0xda, start_address);
+
+	writel(ESDCTL_0xB2220000,
+		ctl_reg);
+	writeb(0xda, start_address + ESDCTL_DDR2_MR);
+	writeb(0xda, start_address + ESDCTL_DDR2_OCD_DEFAULT);
+
+	/* OCD mode exit */
+	writeb(0xda, start_address + ESDCTL_DDR2_EN_DLL); /* Enable DLL */
+
+	/* Set normal mode */
+	writel(ESDCTL_0x82228080,
+		ctl_reg);
+
+	dram_wait(0x20000);
+
+	/* Do not set delay lines, only for MDDR */
+}
+
+static void board_setup_sdram(void)
+{
+	struct esdc_regs *esdc = (struct esdc_regs *)ESDCTL_BASE_ADDR;
+
+	/* Initialize with default values both CSD0/1 */
+	writel(0x2000, &esdc->esdctl0);
+	writel(0x2000, &esdc->esdctl1);
+
+	board_setup_sdram_bank(CSD1_BASE_ADDR);
+}
+
+static void setup_iomux_uart3(void)
+{
+	mxc_request_iomux(MX35_PIN_RTS2_UART3_RXD_MUX, MUX_CONFIG_ALT7);
+	mxc_request_iomux(MX35_PIN_CTS2_UART3_TXD_MUX, MUX_CONFIG_ALT7);
+}
+
+static void setup_iomux_i2c(void)
+{
+	int pad;
+
+	mxc_request_iomux(MX35_PIN_I2C1_CLK, MUX_CONFIG_SION);
+	mxc_request_iomux(MX35_PIN_I2C1_DAT, MUX_CONFIG_SION);
+
+	pad = (PAD_CTL_HYS_SCHMITZ | PAD_CTL_PKE_ENABLE \
+			| PAD_CTL_PUE_PUD | PAD_CTL_ODE_OpenDrain);
+
+	mxc_iomux_set_pad(MX35_PIN_I2C1_CLK, pad);
+	mxc_iomux_set_pad(MX35_PIN_I2C1_DAT, pad);
+
+	mxc_request_iomux(MX35_PIN_TX3_RX2, MUX_CONFIG_ALT1);
+	mxc_request_iomux(MX35_PIN_TX2_RX3, MUX_CONFIG_ALT1);
+
+	mxc_iomux_set_pad(MX35_PIN_TX3_RX2, pad);
+	mxc_iomux_set_pad(MX35_PIN_TX2_RX3, pad);
+}
+
+
+static void setup_iomux_spi(void)
+{
+	mxc_request_iomux(MX35_PIN_CSPI1_MOSI, MUX_CONFIG_SION);
+	mxc_request_iomux(MX35_PIN_CSPI1_MISO, MUX_CONFIG_SION);
+	mxc_request_iomux(MX35_PIN_CSPI1_SS0, MUX_CONFIG_SION);
+	mxc_request_iomux(MX35_PIN_CSPI1_SS1, MUX_CONFIG_SION);
+	mxc_request_iomux(MX35_PIN_CSPI1_SCLK, MUX_CONFIG_SION);
+}
+
+static void setup_iomux_fec(void)
+{
+	/* setup pins for FEC */
+	mxc_request_iomux(MX35_PIN_FEC_TX_CLK, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_RX_CLK, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_RX_DV, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_COL, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_RDATA0, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_TDATA0, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_TX_EN, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_MDC, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_MDIO, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_TX_ERR, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_RX_ERR, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_CRS, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_RDATA1, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_TDATA1, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_RDATA2, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_TDATA2, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_RDATA3, MUX_CONFIG_FUNC);
+	mxc_request_iomux(MX35_PIN_FEC_TDATA3, MUX_CONFIG_FUNC);
+
+}
+
+int board_early_init_f(void)
+{
+	struct ccm_regs *ccm =
+		(struct ccm_regs *)IMX_CCM_BASE;
+
+	/* setup GPIO3_1 to set HighVCore signal */
+	mxc_request_iomux(MX35_PIN_ATA_DATA1, MUX_CONFIG_ALT5);
+	gpio_direction_output(65, 1);
+
+	/* initialize PLL and clock configuration */
+	writel(CCM_CCMR_CONFIG, &ccm->ccmr);
+
+	writel(CCM_MPLL_532_HZ, &ccm->mpctl);
+	writel(CCM_PPLL_300_HZ, &ccm->ppctl);
+
+	/* Set the core to run at 532 Mhz */
+	writel(0x00001000, &ccm->pdr0);
+
+	/* Set-up RAM */
+	board_setup_sdram();
+
+	/* enable clocks */
+	writel(readl(&ccm->cgr0) |
+		MXC_CCM_CGR0_EMI_MASK |
+		MXC_CCM_CGR0_EDI0_MASK |
+		MXC_CCM_CGR0_EPIT1_MASK,
+		&ccm->cgr0);
+
+	writel(readl(&ccm->cgr1) |
+		MXC_CCM_CGR1_FEC_MASK |
+		MXC_CCM_CGR1_GPIO1_MASK |
+		MXC_CCM_CGR1_GPIO2_MASK |
+		MXC_CCM_CGR1_GPIO3_MASK |
+		MXC_CCM_CGR1_I2C1_MASK |
+		MXC_CCM_CGR1_I2C2_MASK |
+		MXC_CCM_CGR1_I2C3_MASK,
+		&ccm->cgr1);
+
+	/* Set-up NAND */
+	__raw_writel(readl(&ccm->rcsr) | MXC_CCM_RCSR_NFC_FMS, &ccm->rcsr);
+
+	/* Set pinmux for the required peripherals */
+	setup_iomux_uart3();
+	setup_iomux_i2c();
+	setup_iomux_fec();
+	setup_iomux_spi();
+
+	return 0;
+}
+
+int board_init(void)
+{
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+
+	return 0;
+}
+
+u32 get_board_rev(void)
+{
+	int rev = 0;
+
+	return (get_cpu_rev() & ~(0xF << 8)) | (rev & 0xF) << 8;
+}