diff options
Diffstat (limited to 'qemu/roms/u-boot/board/karo/tx25/tx25.c')
| -rw-r--r-- | qemu/roms/u-boot/board/karo/tx25/tx25.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/board/karo/tx25/tx25.c b/qemu/roms/u-boot/board/karo/tx25/tx25.c new file mode 100644 index 000000000..4d1a0ec72 --- /dev/null +++ b/qemu/roms/u-boot/board/karo/tx25/tx25.c @@ -0,0 +1,210 @@ +/* + * (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; +} |