/* * (C) Copyright 2009 Wolfgang Denk * (C) Copyright 2009 Dave Srl www.dave.eu * (C) Copyright 2010 ifm ecomatic GmbH * * SPDX-License-Identifier: GPL-2.0+ */ #include #include #include #include #include #include #include #ifdef CONFIG_MISC_INIT_R #include #endif static int eeprom_diag; static int mac_diag; static int gpio_diag; DECLARE_GLOBAL_DATA_PTR; static void gpio_configure(void) { immap_t *im; gpio512x_t *gpioregs; im = (immap_t *) CONFIG_SYS_IMMR; gpioregs = &im->gpio; out_be32(&gpioregs->gpodr, 0x00290000); /* open drain */ out_be32(&gpioregs->gpdat, 0x80001040); /* data (when output) */ /* * out_be32(&gpioregs->gpdir, 0xC2293020); * workaround for a hardware effect: configure direction in pieces, * setting all outputs at once drops the reset line too low and * makes us lose the MII connection (breaks ethernet for us) */ out_be32(&gpioregs->gpdir, 0x02003060); /* direction */ setbits_be32(&gpioregs->gpdir, 0x00200000); /* += reset asi */ udelay(10); setbits_be32(&gpioregs->gpdir, 0x00080000); /* += reset safety */ udelay(10); setbits_be32(&gpioregs->gpdir, 0x00010000); /* += reset comm */ udelay(10); setbits_be32(&gpioregs->gpdir, 0xC0000000); /* += backlight, KB sel */ /* to turn from red to yellow when U-Boot runs */ setbits_be32(&gpioregs->gpdat, 0x00002020); out_be32(&gpioregs->gpimr, 0x00000000); /* interrupt mask */ out_be32(&gpioregs->gpicr1, 0x00000004); /* interrupt sense part 1 */ out_be32(&gpioregs->gpicr2, 0x00A80000); /* interrupt sense part 2 */ out_be32(&gpioregs->gpier, 0xFFFFFFFF); /* interrupt events, clear */ } /* the physical location of the pins */ #define GPIOKEY_ROW_BITMASK 0x40000000 #define GPIOKEY_ROW_UPPER 0 #define GPIOKEY_ROW_LOWER 1 #define GPIOKEY_COL0_BITMASK 0x20000000 #define GPIOKEY_COL1_BITMASK 0x10000000 #define GPIOKEY_COL2_BITMASK 0x08000000 /* the logical presentation of pressed keys */ #define GPIOKEY_BIT_FNLEFT (1 << 5) #define GPIOKEY_BIT_FNRIGHT (1 << 4) #define GPIOKEY_BIT_DIRUP (1 << 3) #define GPIOKEY_BIT_DIRLEFT (1 << 2) #define GPIOKEY_BIT_DIRRIGHT (1 << 1) #define GPIOKEY_BIT_DIRDOWN (1 << 0) /* the hotkey combination which starts recovery */ #define GPIOKEY_BITS_RECOVERY (GPIOKEY_BIT_FNLEFT | GPIOKEY_BIT_DIRUP | \ GPIOKEY_BIT_DIRDOWN) static void gpio_selectrow(gpio512x_t *gpioregs, u32 row) { if (row) setbits_be32(&gpioregs->gpdat, GPIOKEY_ROW_BITMASK); else clrbits_be32(&gpioregs->gpdat, GPIOKEY_ROW_BITMASK); udelay(10); } static u32 gpio_querykbd(void) { immap_t *im; gpio512x_t *gpioregs; u32 keybits; u32 input; im = (immap_t *)CONFIG_SYS_IMMR; gpioregs = &im->gpio; keybits = 0; /* query upper row */ gpio_selectrow(gpioregs, GPIOKEY_ROW_UPPER); input = in_be32(&gpioregs->gpdat); if ((input & GPIOKEY_COL0_BITMASK) == 0) keybits |= GPIOKEY_BIT_FNLEFT; if ((input & GPIOKEY_COL1_BITMASK) == 0) keybits |= GPIOKEY_BIT_DIRUP; if ((input & GPIOKEY_COL2_BITMASK) == 0) keybits |= GPIOKEY_BIT_FNRIGHT; /* query lower row */ gpio_selectrow(gpioregs, GPIOKEY_ROW_LOWER); input = in_be32(&gpioregs->gpdat); if ((input & GPIOKEY_COL0_BITMASK) == 0) keybits |= GPIOKEY_BIT_DIRLEFT; if ((input & GPIOKEY_COL1_BITMASK) == 0) keybits |= GPIOKEY_BIT_DIRRIGHT; if ((input & GPIOKEY_COL2_BITMASK) == 0) keybits |= GPIOKEY_BIT_DIRDOWN; /* return bit pattern for keys */ return keybits; } /* excerpt from the recovery's hw_info.h */ struct __attribute__ ((__packed__)) eeprom_layout { char magic[3]; /** 'ifm' */ u8 len[2]; /** content length without magic/len fields */ u8 version[3]; /** structure version */ u8 type; /** type of PCB */ u8 reserved[0x37]; /** padding up to offset 0x40 */ u8 macaddress[6]; /** ethernet MAC (for the mainboard) @0x40 */ }; #define HW_COMP_MAINCPU 2 static struct eeprom_layout eeprom_content; static int eeprom_was_read; /* has_been_read */ static int eeprom_is_valid; static int eeprom_version; #define get_eeprom_field_int(name) ({ \ int value; \ int idx; \ value = 0; \ for (idx = 0; idx < sizeof(name); idx++) { \ value <<= 8; \ value |= name[idx]; \ } \ value; \ }) static int read_eeprom(void) { int eeprom_datalen; int ret; if (eeprom_was_read) return 0; eeprom_is_valid = 0; ret = i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uchar *)&eeprom_content, sizeof(eeprom_content)); if (eeprom_diag) { printf("DIAG: %s() read rc[%d], size[%d]\n", __func__, ret, sizeof(eeprom_content)); } if (ret != 0) return -1; eeprom_was_read = 1; /* * check validity of EEPROM content * (check version, length, optionally checksum) */ eeprom_is_valid = 1; eeprom_datalen = get_eeprom_field_int(eeprom_content.len); eeprom_version = get_eeprom_field_int(eeprom_content.version); if (eeprom_diag) { printf("DIAG: %s() magic[%c%c%c] len[%d] ver[%d] type[%d]\n", __func__, eeprom_content.magic[0], eeprom_content.magic[1], eeprom_content.magic[2], eeprom_datalen, eeprom_version, eeprom_content.type); } if (strncmp(eeprom_content.magic, "ifm", strlen("ifm")) != 0) eeprom_is_valid = 0; if (eeprom_datalen < sizeof(struct eeprom_layout) - 5) eeprom_is_valid = 0; if ((eeprom_version != 1) && (eeprom_version != 2)) eeprom_is_valid = 0; if (eeprom_content.type != HW_COMP_MAINCPU) eeprom_is_valid = 0; if (eeprom_diag) printf("DIAG: %s() valid[%d]\n", __func__, eeprom_is_valid); return ret; } int mac_read_from_eeprom(void) { const u8 *mac; const char *mac_txt; if (read_eeprom()) { printf("I2C EEPROM read failed.\n"); return -1; } if (!eeprom_is_valid) { printf("I2C EEPROM content not valid\n"); return -1; } mac = NULL; switch (eeprom_version) { case 1: case 2: mac = (const u8 *)&eeprom_content.macaddress; break; } if (mac && is_valid_ether_addr(mac)) { eth_setenv_enetaddr("ethaddr", mac); if (mac_diag) { mac_txt = getenv("ethaddr"); if (mac_txt) printf("DIAG: MAC value [%s]\n", mac_txt); else printf("DIAG: failed to setup MAC env\n"); } } return 0; } /* * BEWARE! * this board uses DDR1(!) Micron SDRAM, *NOT* the DDR2 * which the ADS, Aria or PDM360NG boards are using * (the steps outlined here refer to the Micron datasheet) */ u32 sdram_init_seq[] = { /* item 6, at least one NOP after CKE went high */ CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, /* item 7, precharge all; item 8, tRP (20ns) */ CONFIG_SYS_DDRCMD_PCHG_ALL, CONFIG_SYS_DDRCMD_NOP, /* item 9, extended mode register; item 10, tMRD 10ns) */ CONFIG_SYS_MICRON_EMODE | CONFIG_SYS_MICRON_EMODE_PARAM, CONFIG_SYS_DDRCMD_NOP, /* * item 11, (base) mode register _with_ reset DLL; * item 12, tMRD (10ns) */ CONFIG_SYS_MICRON_BMODE | CONFIG_SYS_MICRON_BMODE_RSTDLL | CONFIG_SYS_MICRON_BMODE_PARAM, CONFIG_SYS_DDRCMD_NOP, /* item 13, precharge all; item 14, tRP (20ns) */ CONFIG_SYS_DDRCMD_PCHG_ALL, CONFIG_SYS_DDRCMD_NOP, /* * item 15, auto refresh (i.e. refresh with CKE held high); * item 16, tRFC (70ns) */ CONFIG_SYS_DDRCMD_RFSH, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, /* * item 17, auto refresh (i.e. refresh with CKE held high); * item 18, tRFC (70ns) */ CONFIG_SYS_DDRCMD_RFSH, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, CONFIG_SYS_DDRCMD_NOP, /* item 19, optional, unassert DLL reset; item 20, tMRD (20ns) */ CONFIG_SYS_MICRON_BMODE | CONFIG_SYS_MICRON_BMODE_PARAM, CONFIG_SYS_DDRCMD_NOP, /* * item 21, "actually done", but make sure 200 DRAM clock cycles * have passed after DLL reset before READ requests are issued * (200 cycles at 160MHz -> 1.25 usec) */ /* EMPTY, optional, we don't do it */ }; phys_size_t initdram(int board_type) { return fixed_sdram(NULL, sdram_init_seq, ARRAY_SIZE(sdram_init_seq)); } int misc_init_r(void) { u32 keys; char *s; int want_recovery; /* we use bus I2C-0 for the on-board eeprom */ i2c_set_bus_num(0); /* setup GPIO directions and initial values */ gpio_configure(); /* * enforce the start of the recovery system when * - the appropriate keys were pressed * - "some" external software told us to * - a previous installation was aborted or has failed */ want_recovery = 0; keys = gpio_querykbd(); if (gpio_diag) printf("GPIO keyboard status [0x%02X]\n", keys); if ((keys & GPIOKEY_BITS_RECOVERY) == GPIOKEY_BITS_RECOVERY) { printf("detected recovery request (keyboard)\n"); want_recovery = 1; } s = getenv("want_recovery"); if ((s != NULL) && (*s != '\0')) { printf("detected recovery request (environment)\n"); want_recovery = 1; } s = getenv("install_in_progress"); if ((s != NULL) && (*s != '\0')) { printf("previous installation has not completed\n"); want_recovery = 1; } s = getenv("install_failed"); if ((s != NULL) && (*s != '\0')) { printf("previous installation has failed\n"); want_recovery = 1; } if (want_recovery) { printf("enforced start of the recovery system\n"); setenv("bootcmd", "run recovery"); } /* * boot the recovery system without waiting; boot the * production system without waiting by default, only * insert a pause (to provide a chance to get a prompt) * when GPIO keys were pressed during power on */ if (want_recovery) setenv("bootdelay", "0"); else if (!keys) setenv("bootdelay", "0"); else setenv("bootdelay", "2"); /* get the ethernet MAC from I2C EEPROM */ mac_read_from_eeprom(); return 0; } /* setup specific IO pad configuration */ static iopin_t ioregs_init[] = { { /* LPC CS3 */ offsetof(struct ioctrl512x, io_control_nfc_ce0), 1, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(1) | IO_PIN_DS(2), }, { /* LPC CS1 */ offsetof(struct ioctrl512x, io_control_lpc_cs1), 1, IO_PIN_OVER_DRVSTR, IO_PIN_DS(2), }, { /* LPC CS2 */ offsetof(struct ioctrl512x, io_control_lpc_cs2), 1, IO_PIN_OVER_DRVSTR, IO_PIN_DS(2), }, { /* LPC CS4, CS5 */ offsetof(struct ioctrl512x, io_control_pata_ce1), 2, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(1) | IO_PIN_DS(2), }, { /* SDHC CLK, CMD, D0, D1, D2, D3 */ offsetof(struct ioctrl512x, io_control_pata_ior), 6, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(1) | IO_PIN_DS(2), }, { /* GPIO keyboard */ offsetof(struct ioctrl512x, io_control_pci_ad30), 4, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* GPIO DN1 PF, LCD power, DN2 PF */ offsetof(struct ioctrl512x, io_control_pci_ad26), 3, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* GPIO reset AS-i */ offsetof(struct ioctrl512x, io_control_pci_ad21), 1, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* GPIO reset safety */ offsetof(struct ioctrl512x, io_control_pci_ad19), 1, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* GPIO reset netX */ offsetof(struct ioctrl512x, io_control_pci_ad16), 1, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* GPIO ma2 en */ offsetof(struct ioctrl512x, io_control_pci_ad15), 1, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* GPIO SD CD, SD WP */ offsetof(struct ioctrl512x, io_control_pci_ad08), 2, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* FEC RX DV */ offsetof(struct ioctrl512x, io_control_pci_ad06), 1, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(2) | IO_PIN_DS(2), }, { /* GPIO AS-i prog, AS-i done, LCD backlight */ offsetof(struct ioctrl512x, io_control_pci_ad05), 3, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* GPIO AS-i wdg */ offsetof(struct ioctrl512x, io_control_pci_req2), 1, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* GPIO safety wdg */ offsetof(struct ioctrl512x, io_control_pci_req1), 1, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* GPIO netX wdg */ offsetof(struct ioctrl512x, io_control_pci_req0), 1, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* GPIO IRQ powerfail */ offsetof(struct ioctrl512x, io_control_pci_inta), 1, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* GPIO AS-i PWRD */ offsetof(struct ioctrl512x, io_control_pci_frame), 1, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* GPIO LED0, LED1 */ offsetof(struct ioctrl512x, io_control_pci_idsel), 2, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* GPIO IRQ AS-i 1, IRQ AS-i 2, IRQ safety */ offsetof(struct ioctrl512x, io_control_pci_irdy), 3, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* DIU clk */ offsetof(struct ioctrl512x, io_control_spdif_txclk), 1, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(2) | IO_PIN_DS(2), }, { /* FEC TX ER, CRS */ offsetof(struct ioctrl512x, io_control_spdif_tx), 2, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(1) | IO_PIN_DS(2), }, { /* GPIO/GPT */ /* to *NOT* have the EXT IRQ0 float */ offsetof(struct ioctrl512x, io_control_irq0), 1, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, { /* * FEC col, tx en, tx clk, txd 0-3, mdc, rx er, * rdx 3-0, mdio, rx clk */ offsetof(struct ioctrl512x, io_control_psc0_0), 15, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(1) | IO_PIN_DS(2), }, /* optional: make sure PSC3 remains the serial console */ { /* LPC CS6 */ offsetof(struct ioctrl512x, io_control_psc3_4), 1, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(1) | IO_PIN_DS(2), }, /* make sure PSC4 remains available for SPI, *BUT* PSC4_1 is a GPIO kind of SS! */ { /* enforce drive strength on the SPI pin */ offsetof(struct ioctrl512x, io_control_psc4_0), 5, IO_PIN_OVER_DRVSTR, IO_PIN_DS(2), }, { offsetof(struct ioctrl512x, io_control_psc4_1), 1, IO_PIN_OVER_FMUX, IO_PIN_FMUX(3), }, /* optional: make sure PSC5 remains available for SPI */ { /* enforce drive strength on the SPI pin */ offsetof(struct ioctrl512x, io_control_psc5_0), 5, IO_PIN_OVER_DRVSTR, IO_PIN_DS(1), }, { /* LPC TSIZ1 */ offsetof(struct ioctrl512x, io_control_psc6_0), 1, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(1) | IO_PIN_DS(2), }, { /* DIU hsync */ offsetof(struct ioctrl512x, io_control_psc6_1), 1, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(2) | IO_PIN_DS(1), }, { /* DIU vsync */ offsetof(struct ioctrl512x, io_control_psc6_4), 1, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(2) | IO_PIN_DS(1), }, { /* PSC7, part of DIU RGB */ offsetof(struct ioctrl512x, io_control_psc7_0), 2, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(2) | IO_PIN_DS(1), }, { /* PSC7, safety UART */ offsetof(struct ioctrl512x, io_control_psc7_2), 2, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(0) | IO_PIN_DS(1), }, { /* DIU (part of) RGB[] */ offsetof(struct ioctrl512x, io_control_psc8_3), 16, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(2) | IO_PIN_DS(1), }, { /* DIU data enable */ offsetof(struct ioctrl512x, io_control_psc11_4), 1, IO_PIN_OVER_FMUX | IO_PIN_OVER_DRVSTR, IO_PIN_FMUX(2) | IO_PIN_DS(1), }, /* reduce LPB drive strength for improved EMI */ { /* LPC OE, LPC RW */ offsetof(struct ioctrl512x, io_control_lpc_oe), 2, IO_PIN_OVER_DRVSTR, IO_PIN_DS(2), }, { /* LPC AX03 through LPC AD00 */ offsetof(struct ioctrl512x, io_control_lpc_ax03), 36, IO_PIN_OVER_DRVSTR, IO_PIN_DS(2), }, { /* LPC CS5 */ offsetof(struct ioctrl512x, io_control_pata_ce2), 1, IO_PIN_OVER_DRVSTR, IO_PIN_DS(2), }, { /* SDHC CLK */ offsetof(struct ioctrl512x, io_control_nfc_wp), 1, IO_PIN_OVER_DRVSTR, IO_PIN_DS(2), }, { /* SDHC DATA */ offsetof(struct ioctrl512x, io_control_nfc_ale), 4, IO_PIN_OVER_DRVSTR, IO_PIN_DS(2), }, }; int checkboard(void) { puts("Board: ifm AC14xx\n"); /* initialize function mux & slew rate IO inter alia on IO Pins */ iopin_initialize_bits(ioregs_init, ARRAY_SIZE(ioregs_init)); return 0; } #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) void ft_board_setup(void *blob, bd_t *bd) { ft_cpu_setup(blob, bd); } #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */