X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=board%2Fkaro%2Ftx25%2Ftx25.c;h=4d1a0ec725778e46dce493c5c22b0b70dbf6489e;hb=c175f306b3f8885965f63ff6c71df5c0f899b4c9;hp=362f00a173f1bf30f020b21e7748df8919701645;hpb=6e2fbdea1b26d75314d87c380a36b0015bf824cf;p=u-boot diff --git a/board/karo/tx25/tx25.c b/board/karo/tx25/tx25.c index 362f00a173..4d1a0ec725 100644 --- a/board/karo/tx25/tx25.c +++ b/board/karo/tx25/tx25.c @@ -8,62 +8,77 @@ * 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 - * + * SPDX-License-Identifier: GPL-2.0+ */ #include #include #include -#include +#include #include -#include 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) { - struct iomuxc_mux_ctl *muxctl; - struct iomuxc_pad_ctl *padctl; - u32 gpio_mux_mode = MX25_PIN_MUX_MODE(5); - u32 saved_rdata0_mode, saved_rdata1_mode, saved_rx_dv_mode; + 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"); - /* - * 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); + 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); @@ -91,15 +106,10 @@ void tx25_fec_init(void) * 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 + * set each mux mode 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); + imx_iomux_v3_setup_multiple_pads(fec_cfg_pads, + ARRAY_SIZE(fec_cfg_pads)); /* * set each to 1 and make each an output @@ -120,19 +130,46 @@ void tx25_fec_init(void) /* * 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); + imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads)); } #else #define tx25_fec_init() #endif -int board_init() -{ #ifdef CONFIG_MXC_UART - mx25_uart1_init_pins(); +/* + * 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;