X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=board%2Fkaro%2Ftx25%2Ftx25.c;h=461e21f3fd12d2c9ecb669d8ba04a8f08c646adc;hb=69f14dc2fd64307f012381dd333a06001dec75dc;hp=307ffd0cbe5fbb34b088d3f0521aeff29ea4c7ac;hpb=e6d9b9785cde08162afd68ef555dcef7d477e1be;p=karo-tx-uboot.git diff --git a/board/karo/tx25/tx25.c b/board/karo/tx25/tx25.c index 307ffd0cbe..461e21f3fd 100644 --- a/board/karo/tx25/tx25.c +++ b/board/karo/tx25/tx25.c @@ -27,63 +27,83 @@ #include #include #include -#include +#include #include -#include - -static void mdelay(int n) -{ - while (n-- > 0) - udelay(1000); -} DECLARE_GLOBAL_DATA_PTR; -#ifdef CONFIG_FEC_MXC -void tx25_fec_init(void) +#ifdef CONFIG_SPL_BUILD +void board_init_f(ulong bootflag) { - 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 + * copy ourselves from where we are running to where we were + * linked at. Use ulong pointers as all addresses involved + * are 4-byte-aligned. */ - mx25_fec_init_pins(); - + 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)); /* - * 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 + * branch to nand_boot's link-time address. */ - muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE; - padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE; + 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 - writel(gpio_mux_mode, &muxctl->pad_d13); - writel(gpio_mux_mode, &muxctl->pad_d11); +#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, + }; - writel(0x0, &padctl->pad_d13); - writel(0x0, &padctl->pad_d11); + debug("tx25_fec_init\n"); + imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads)); /* drop PHY power and assert reset (low) */ - val = readl(&gpio4->gpio_dr) & ~((1 << 7) | (1 << 9)); - writel(val, &gpio4->gpio_dr); - val = readl(&gpio4->gpio_dir) | (1 << 7) | (1 << 9); - writel(val, &gpio4->gpio_dir); + 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 */ - val = readl(&gpio4->gpio_dr) | 1 << 9; - writel(val, &gpio4->gpio_dr); + gpio_set_value(GPIO_FEC_ENABLE_B, 1); mdelay(10); @@ -100,53 +120,71 @@ 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 */ - val = readl(&gpio3->gpio_dr) | (1 << 10) | (1 << 11) | (1 << 12); - writel(val, &gpio3->gpio_dr); - val = readl(&gpio3->gpio_dir) | (1 << 10) | (1 << 11) | (1 << 12); - writel(val, &gpio3->gpio_dir); + 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 */ - val = readl(&gpio4->gpio_dr) | 1 << 7; - writel(val, &gpio4->gpio_dr); - writel(val, &gpio4->gpio_dr); + gpio_set_value(GPIO_FEC_RESET_B, 1); 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); + 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_arch_number = MACH_TYPE_TX25; gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; return 0; } @@ -157,7 +195,7 @@ int board_late_init(void) return 0; } -int dram_init (void) +int dram_init(void) { /* dram_init must store complete ramsize in gd->ram_size */ gd->ram_size = get_ram_size((void *)PHYS_SDRAM_1,