Add support for KARO TX25 board
This is an i.MX25 base board with only NAND
so it uses nand_spl to boot.
Signed-off-by: John Rigby <jcrigby@gmail.com>
Tune configuration, add support for (redundant) environment in NAND.
Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
CC: Fred Fan <fanyefeng@gmail.com>
CC: Tom <Tom.Rix@windriver.com>
diff --git a/board/karo/tx25/tx25.c b/board/karo/tx25/tx25.c
new file mode 100644
index 0000000..4d6a96d
--- /dev/null
+++ b/board/karo/tx25/tx25.c
@@ -0,0 +1,176 @@
+/*
+ * (C) Copyright 2009 DENX Software Engineering
+ * Author: John Rigby <jrigby@gmail.com>
+ *
+ * Based on imx27lite.c:
+ * Copyright (C) 2008,2009 Eric Jarrige <jorasse@users.sourceforge.net>
+ * Copyright (C) 2009 Ilya Yanok <yanok@emcraft.com>
+ * And:
+ * RedBoot tx25_misc.c Copyright (C) 2009 Red Hat
+ *
+ * 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/arch/imx-regs.h>
+#include <asm/arch/imx25-pinmux.h>
+
+static void mdelay(int n)
+{
+ while (n-- > 0)
+ udelay(1000);
+}
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_FEC_MXC
+void tx25_fec_init(void)
+{
+ struct iomuxc_mux_ctl *muxctl;
+ struct iomuxc_pad_ctl *padctl;
+ u32 val;
+ u32 gpio_mux_mode = MX25_PIN_MUX_MODE(5);
+ struct gpio_regs *gpio4 = (struct gpio_regs *)IMX_GPIO4_BASE;
+ struct gpio_regs *gpio3 = (struct gpio_regs *)IMX_GPIO3_BASE;
+ u32 saved_rdata0_mode, saved_rdata1_mode, saved_rx_dv_mode;
+
+ debug("tx25_fec_init\n");
+ /*
+ * fec pin init is generic
+ */
+ mx25_fec_init_pins();
+
+ /*
+ * Set up the FEC_RESET_B and FEC_ENABLE GPIO pins.
+ *
+ * FEC_RESET_B: gpio4[7] is ALT 5 mode of pin D13
+ * FEC_ENABLE_B: gpio4[9] is ALT 5 mode of pin D11
+ */
+ muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE;
+ padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE;
+
+ writel(gpio_mux_mode, &muxctl->pad_d13);
+ writel(gpio_mux_mode, &muxctl->pad_d11);
+
+ writel(0x0, &padctl->pad_d13);
+ writel(0x0, &padctl->pad_d11);
+
+ /* drop PHY power and assert reset (low) */
+ val = readl(&gpio4->dr) & ~((1 << 7) | (1 << 9));
+ writel(val, &gpio4->dr);
+ val = readl(&gpio4->dir) | (1 << 7) | (1 << 9);
+ writel(val, &gpio4->dir);
+
+ mdelay(5);
+
+ debug("resetting phy\n");
+
+ /* turn on PHY power leaving reset asserted */
+ val = readl(&gpio4->dr) | 1 << 9;
+ writel(val, &gpio4->dr);
+
+ mdelay(10);
+
+ /*
+ * Setup some strapping pins that are latched by the PHY
+ * as reset goes high.
+ *
+ * Set PHY mode to 111
+ * mode0 comes from FEC_RDATA0 which is GPIO 3_10 in mux mode 5
+ * mode1 comes from FEC_RDATA1 which is GPIO 3_11 in mux mode 5
+ * mode2 is tied high so nothing to do
+ *
+ * Turn on RMII mode
+ * RMII mode is selected by FEC_RX_DV which is GPIO 3_12 in mux mode
+ */
+ /*
+ * save three current mux modes and set each to gpio mode
+ */
+ saved_rdata0_mode = readl(&muxctl->pad_fec_rdata0);
+ saved_rdata1_mode = readl(&muxctl->pad_fec_rdata1);
+ saved_rx_dv_mode = readl(&muxctl->pad_fec_rx_dv);
+
+ writel(gpio_mux_mode, &muxctl->pad_fec_rdata0);
+ writel(gpio_mux_mode, &muxctl->pad_fec_rdata1);
+ writel(gpio_mux_mode, &muxctl->pad_fec_rx_dv);
+
+ /*
+ * set each to 1 and make each an output
+ */
+ val = readl(&gpio3->dr) | (1 << 10) | (1 << 11) | (1 << 12);
+ writel(val, &gpio3->dr);
+ val = readl(&gpio3->dir) | (1 << 10) | (1 << 11) | (1 << 12);
+ writel(val, &gpio3->dir);
+
+ mdelay(22); /* this value came from RedBoot */
+
+ /*
+ * deassert PHY reset
+ */
+ val = readl(&gpio4->dr) | 1 << 7;
+ writel(val, &gpio4->dr);
+ writel(val, &gpio4->dr);
+
+ mdelay(5);
+
+ /*
+ * set FEC pins back
+ */
+ writel(saved_rdata0_mode, &muxctl->pad_fec_rdata0);
+ writel(saved_rdata1_mode, &muxctl->pad_fec_rdata1);
+ writel(saved_rx_dv_mode, &muxctl->pad_fec_rx_dv);
+}
+#else
+#define tx25_fec_init()
+#endif
+
+int board_init()
+{
+#ifdef CONFIG_MXC_UART
+ extern void mx25_uart_init_pins(void);
+
+ mx25_uart_init_pins();
+#endif
+ return 0;
+}
+
+int board_late_init(void)
+{
+ tx25_fec_init();
+ return 0;
+}
+
+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);
+#if CONFIG_NR_DRAM_BANKS > 1
+ gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
+ gd->bd->bi_dram[1].size = get_ram_size((volatile void *)PHYS_SDRAM_2,
+ PHYS_SDRAM_2_SIZE);
+#endif
+
+ return 0;
+}
+
+int checkboard(void)
+{
+ printf("KARO TX25\n");
+ return 0;
+}