--- /dev/null
+/*
+ * (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
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux-mx25.h>
+#include <asm/gpio.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_SPL_BUILD
+void board_init_f(ulong bootflag)
+{
+ /*
+ * copy ourselves from where we are running to where we were
+ * linked at. Use ulong pointers as all addresses involved
+ * are 4-byte-aligned.
+ */
+ ulong *start_ptr, *end_ptr, *link_ptr, *run_ptr, *dst;
+ asm volatile ("ldr %0, =_start" : "=r"(start_ptr));
+ asm volatile ("ldr %0, =_end" : "=r"(end_ptr));
+ asm volatile ("ldr %0, =board_init_f" : "=r"(link_ptr));
+ asm volatile ("adr %0, board_init_f" : "=r"(run_ptr));
+ for (dst = start_ptr; dst < end_ptr; dst++)
+ *dst = *(dst+(run_ptr-link_ptr));
+ /*
+ * branch to nand_boot's link-time address.
+ */
+ asm volatile("ldr pc, =nand_boot");
+}
+#endif
+
+#ifdef CONFIG_FEC_MXC
+/*
+ * FIXME: need to revisit this
+ * The original code enabled PUE and 100-k pull-down without PKE, so the right
+ * value here is likely:
+ * 0 for no pull
+ * or:
+ * PAD_CTL_PUS_100K_DOWN for 100-k pull-down
+ */
+#define FEC_OUT_PAD_CTRL 0
+
+#define GPIO_FEC_RESET_B IMX_GPIO_NR(4, 7)
+#define GPIO_FEC_ENABLE_B IMX_GPIO_NR(4, 9)
+
+void tx25_fec_init(void)
+{
+ static const iomux_v3_cfg_t fec_pads[] = {
+ MX25_PAD_FEC_TX_CLK__FEC_TX_CLK,
+ MX25_PAD_FEC_RX_DV__FEC_RX_DV,
+ MX25_PAD_FEC_RDATA0__FEC_RDATA0,
+ NEW_PAD_CTRL(MX25_PAD_FEC_TDATA0__FEC_TDATA0, FEC_OUT_PAD_CTRL),
+ NEW_PAD_CTRL(MX25_PAD_FEC_TX_EN__FEC_TX_EN, FEC_OUT_PAD_CTRL),
+ NEW_PAD_CTRL(MX25_PAD_FEC_MDC__FEC_MDC, FEC_OUT_PAD_CTRL),
+ MX25_PAD_FEC_MDIO__FEC_MDIO,
+ MX25_PAD_FEC_RDATA1__FEC_RDATA1,
+ NEW_PAD_CTRL(MX25_PAD_FEC_TDATA1__FEC_TDATA1, FEC_OUT_PAD_CTRL),
+
+ NEW_PAD_CTRL(MX25_PAD_D13__GPIO_4_7, 0), /* FEC_RESET_B */
+ NEW_PAD_CTRL(MX25_PAD_D11__GPIO_4_9, 0), /* FEC_ENABLE_B */
+ };
+
+ static const iomux_v3_cfg_t fec_cfg_pads[] = {
+ MX25_PAD_FEC_RDATA0__GPIO_3_10,
+ MX25_PAD_FEC_RDATA1__GPIO_3_11,
+ MX25_PAD_FEC_RX_DV__GPIO_3_12,
+ };
+
+ debug("tx25_fec_init\n");
+ imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
+
+ /* drop PHY power and assert reset (low) */
+ gpio_direction_output(GPIO_FEC_RESET_B, 0);
+ gpio_direction_output(GPIO_FEC_ENABLE_B, 0);
+
+ mdelay(5);
+
+ debug("resetting phy\n");
+
+ /* turn on PHY power leaving reset asserted */
+ gpio_set_value(GPIO_FEC_ENABLE_B, 1);
+
+ 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
+ */
+ /*
+ * set each mux mode to gpio mode
+ */
+ imx_iomux_v3_setup_multiple_pads(fec_cfg_pads,
+ ARRAY_SIZE(fec_cfg_pads));
+
+ /*
+ * set each to 1 and make each an output
+ */
+ gpio_direction_output(IMX_GPIO_NR(3, 10), 1);
+ gpio_direction_output(IMX_GPIO_NR(3, 11), 1);
+ gpio_direction_output(IMX_GPIO_NR(3, 12), 1);
+
+ mdelay(22); /* this value came from RedBoot */
+
+ /*
+ * deassert PHY reset
+ */
+ gpio_set_value(GPIO_FEC_RESET_B, 1);
+
+ mdelay(5);
+
+ /*
+ * set FEC pins back
+ */
+ imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
+}
+#else
+#define tx25_fec_init()
+#endif
+
+#ifdef CONFIG_MXC_UART
+/*
+ * Set up input pins with hysteresis and 100-k pull-ups
+ */
+#define UART1_IN_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP)
+/*
+ * FIXME: need to revisit this
+ * The original code enabled PUE and 100-k pull-down without PKE, so the right
+ * value here is likely:
+ * 0 for no pull
+ * or:
+ * PAD_CTL_PUS_100K_DOWN for 100-k pull-down
+ */
+#define UART1_OUT_PAD_CTRL 0
+
+static void tx25_uart1_init(void)
+{
+ static const iomux_v3_cfg_t uart1_pads[] = {
+ NEW_PAD_CTRL(MX25_PAD_UART1_RXD__UART1_RXD, UART1_IN_PAD_CTRL),
+ NEW_PAD_CTRL(MX25_PAD_UART1_TXD__UART1_TXD, UART1_OUT_PAD_CTRL),
+ NEW_PAD_CTRL(MX25_PAD_UART1_RTS__UART1_RTS, UART1_OUT_PAD_CTRL),
+ NEW_PAD_CTRL(MX25_PAD_UART1_CTS__UART1_CTS, UART1_IN_PAD_CTRL),
+ };
+
+ imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
+}
+#else
+#define tx25_uart1_init()
+#endif
+
+int board_init()
+{
+ tx25_uart1_init();
+
+ /* board id for linux */
+ gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+ return 0;
+}
+
+int board_late_init(void)
+{
+ tx25_fec_init();
+ return 0;
+}
+
+int dram_init(void)
+{
+ /* dram_init must store complete ramsize in gd->ram_size */
+ gd->ram_size = get_ram_size((void *)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 = get_ram_size((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((void *)PHYS_SDRAM_2,
+ PHYS_SDRAM_2_SIZE);
+#else
+
+#endif
+}
+
+int checkboard(void)
+{
+ printf("KARO TX25\n");
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff