2 * (C) Copyright 2009 DENX Software Engineering
3 * Author: John Rigby <jrigby@gmail.com>
5 * Based on imx27lite.c:
6 * Copyright (C) 2008,2009 Eric Jarrige <jorasse@users.sourceforge.net>
7 * Copyright (C) 2009 Ilya Yanok <yanok@emcraft.com>
9 * RedBoot tx25_misc.c Copyright (C) 2009 Red Hat
11 * SPDX-License-Identifier: GPL-2.0+
15 #include <asm/arch/imx-regs.h>
16 #include <asm/arch/iomux-mx25.h>
19 DECLARE_GLOBAL_DATA_PTR;
21 #ifdef CONFIG_SPL_BUILD
22 void board_init_f(ulong bootflag)
25 * copy ourselves from where we are running to where we were
26 * linked at. Use ulong pointers as all addresses involved
29 ulong *start_ptr, *end_ptr, *link_ptr, *run_ptr, *dst;
30 asm volatile ("ldr %0, =_start" : "=r"(start_ptr));
31 asm volatile ("ldr %0, =_end" : "=r"(end_ptr));
32 asm volatile ("ldr %0, =board_init_f" : "=r"(link_ptr));
33 asm volatile ("adr %0, board_init_f" : "=r"(run_ptr));
34 for (dst = start_ptr; dst < end_ptr; dst++)
35 *dst = *(dst+(run_ptr-link_ptr));
37 * branch to nand_boot's link-time address.
39 asm volatile("ldr pc, =nand_boot");
45 * FIXME: need to revisit this
46 * The original code enabled PUE and 100-k pull-down without PKE, so the right
47 * value here is likely:
50 * PAD_CTL_PUS_100K_DOWN for 100-k pull-down
52 #define FEC_OUT_PAD_CTRL 0
54 #define GPIO_FEC_RESET_B IMX_GPIO_NR(4, 7)
55 #define GPIO_FEC_ENABLE_B IMX_GPIO_NR(4, 9)
57 void tx25_fec_init(void)
59 static const iomux_v3_cfg_t fec_pads[] = {
60 MX25_PAD_FEC_TX_CLK__FEC_TX_CLK,
61 MX25_PAD_FEC_RX_DV__FEC_RX_DV,
62 MX25_PAD_FEC_RDATA0__FEC_RDATA0,
63 NEW_PAD_CTRL(MX25_PAD_FEC_TDATA0__FEC_TDATA0, FEC_OUT_PAD_CTRL),
64 NEW_PAD_CTRL(MX25_PAD_FEC_TX_EN__FEC_TX_EN, FEC_OUT_PAD_CTRL),
65 NEW_PAD_CTRL(MX25_PAD_FEC_MDC__FEC_MDC, FEC_OUT_PAD_CTRL),
66 MX25_PAD_FEC_MDIO__FEC_MDIO,
67 MX25_PAD_FEC_RDATA1__FEC_RDATA1,
68 NEW_PAD_CTRL(MX25_PAD_FEC_TDATA1__FEC_TDATA1, FEC_OUT_PAD_CTRL),
70 NEW_PAD_CTRL(MX25_PAD_D13__GPIO_4_7, 0), /* FEC_RESET_B */
71 NEW_PAD_CTRL(MX25_PAD_D11__GPIO_4_9, 0), /* FEC_ENABLE_B */
74 static const iomux_v3_cfg_t fec_cfg_pads[] = {
75 MX25_PAD_FEC_RDATA0__GPIO_3_10,
76 MX25_PAD_FEC_RDATA1__GPIO_3_11,
77 MX25_PAD_FEC_RX_DV__GPIO_3_12,
80 debug("tx25_fec_init\n");
81 imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
83 /* drop PHY power and assert reset (low) */
84 gpio_direction_output(GPIO_FEC_RESET_B, 0);
85 gpio_direction_output(GPIO_FEC_ENABLE_B, 0);
89 debug("resetting phy\n");
91 /* turn on PHY power leaving reset asserted */
92 gpio_set_value(GPIO_FEC_ENABLE_B, 1);
97 * Setup some strapping pins that are latched by the PHY
100 * Set PHY mode to 111
101 * mode0 comes from FEC_RDATA0 which is GPIO 3_10 in mux mode 5
102 * mode1 comes from FEC_RDATA1 which is GPIO 3_11 in mux mode 5
103 * mode2 is tied high so nothing to do
106 * RMII mode is selected by FEC_RX_DV which is GPIO 3_12 in mux mode
109 * set each mux mode to gpio mode
111 imx_iomux_v3_setup_multiple_pads(fec_cfg_pads,
112 ARRAY_SIZE(fec_cfg_pads));
115 * set each to 1 and make each an output
117 gpio_direction_output(IMX_GPIO_NR(3, 10), 1);
118 gpio_direction_output(IMX_GPIO_NR(3, 11), 1);
119 gpio_direction_output(IMX_GPIO_NR(3, 12), 1);
121 mdelay(22); /* this value came from RedBoot */
126 gpio_set_value(GPIO_FEC_RESET_B, 1);
133 imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
136 #define tx25_fec_init()
139 #ifdef CONFIG_MXC_UART
141 * Set up input pins with hysteresis and 100-k pull-ups
143 #define UART1_IN_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP)
145 * FIXME: need to revisit this
146 * The original code enabled PUE and 100-k pull-down without PKE, so the right
147 * value here is likely:
150 * PAD_CTL_PUS_100K_DOWN for 100-k pull-down
152 #define UART1_OUT_PAD_CTRL 0
154 static void tx25_uart1_init(void)
156 static const iomux_v3_cfg_t uart1_pads[] = {
157 NEW_PAD_CTRL(MX25_PAD_UART1_RXD__UART1_RXD, UART1_IN_PAD_CTRL),
158 NEW_PAD_CTRL(MX25_PAD_UART1_TXD__UART1_TXD, UART1_OUT_PAD_CTRL),
159 NEW_PAD_CTRL(MX25_PAD_UART1_RTS__UART1_RTS, UART1_OUT_PAD_CTRL),
160 NEW_PAD_CTRL(MX25_PAD_UART1_CTS__UART1_CTS, UART1_IN_PAD_CTRL),
163 imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
166 #define tx25_uart1_init()
173 /* board id for linux */
174 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
178 int board_late_init(void)
186 /* dram_init must store complete ramsize in gd->ram_size */
187 gd->ram_size = get_ram_size((void *)PHYS_SDRAM_1,
192 void dram_init_banksize(void)
194 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
195 gd->bd->bi_dram[0].size = get_ram_size((void *)PHYS_SDRAM_1,
197 #if CONFIG_NR_DRAM_BANKS > 1
198 gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
199 gd->bd->bi_dram[1].size = get_ram_size((void *)PHYS_SDRAM_2,
208 printf("KARO TX25\n");