1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2016 David Lechner <david@lechnology.com> 4 * 5 * Based on da850evm.c 6 * 7 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ 8 * 9 * Based on da830evm.c. Original Copyrights follow: 10 * 11 * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com> 12 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net> 13 */ 14 15 #include <common.h> 16 #include <i2c.h> 17 #include <spi.h> 18 #include <spi_flash.h> 19 #include <asm/arch/hardware.h> 20 #include <asm/arch/pinmux_defs.h> 21 #include <asm/io.h> 22 #include <asm/arch/davinci_misc.h> 23 #include <linux/errno.h> 24 #include <hwconfig.h> 25 #include <asm/mach-types.h> 26 #include <asm/setup.h> 27 28 #ifdef CONFIG_MMC_DAVINCI 29 #include <mmc.h> 30 #include <asm/arch/sdmmc_defs.h> 31 #endif 32 33 DECLARE_GLOBAL_DATA_PTR; 34 35 u8 board_rev; 36 37 #define EEPROM_I2C_ADDR 0x50 38 #define EEPROM_REV_OFFSET 0x3F00 39 #define EEPROM_MAC_OFFSET 0x3F06 40 41 #ifdef CONFIG_MMC_DAVINCI 42 static struct davinci_mmc mmc_sd0 = { 43 .reg_base = (struct davinci_mmc_regs *)DAVINCI_MMC_SD0_BASE, 44 .host_caps = MMC_MODE_4BIT, /* DA850 supports only 4-bit SD/MMC */ 45 .voltages = MMC_VDD_32_33 | MMC_VDD_33_34, 46 .version = MMC_CTLR_VERSION_2, 47 }; 48 49 int board_mmc_init(bd_t *bis) 50 { 51 mmc_sd0.input_clk = clk_get(DAVINCI_MMCSD_CLKID); 52 53 /* Add slot-0 to mmc subsystem */ 54 return davinci_mmc_init(bis, &mmc_sd0); 55 } 56 #endif 57 58 const struct pinmux_resource pinmuxes[] = { 59 PINMUX_ITEM(spi0_pins_base), 60 PINMUX_ITEM(spi0_pins_scs0), 61 PINMUX_ITEM(uart1_pins_txrx), 62 PINMUX_ITEM(i2c0_pins), 63 PINMUX_ITEM(mmc0_pins), 64 }; 65 66 const int pinmuxes_size = ARRAY_SIZE(pinmuxes); 67 68 const struct lpsc_resource lpsc[] = { 69 { DAVINCI_LPSC_SPI0 }, /* Serial Flash */ 70 { DAVINCI_LPSC_UART1 }, /* console */ 71 { DAVINCI_LPSC_MMC_SD }, 72 }; 73 74 const int lpsc_size = ARRAY_SIZE(lpsc); 75 76 u32 get_board_rev(void) 77 { 78 u8 buf[2]; 79 80 if (!board_rev) { 81 if (i2c_read(EEPROM_I2C_ADDR, EEPROM_REV_OFFSET, 2, buf, 2)) { 82 printf("\nBoard revision read failed!\n"); 83 } else { 84 /* 85 * Board rev 3 has MAC address at EEPROM_REV_OFFSET. 86 * Other revisions have checksum at EEPROM_REV_OFFSET+1 87 * to detect this. 88 */ 89 if ((buf[0] ^ buf[1]) == 0xFF) 90 board_rev = buf[0]; 91 else 92 board_rev = 3; 93 } 94 } 95 96 return board_rev; 97 } 98 99 /* 100 * The Bluetooth MAC address serves as the board serial number. 101 */ 102 void get_board_serial(struct tag_serialnr *serialnr) 103 { 104 u32 offset; 105 u8 buf[6]; 106 107 if (!board_rev) 108 board_rev = get_board_rev(); 109 110 /* Board rev 3 has MAC address where rev should be */ 111 offset = (board_rev == 3) ? EEPROM_REV_OFFSET : EEPROM_MAC_OFFSET; 112 113 if (i2c_read(EEPROM_I2C_ADDR, offset, 2, buf, 6)) { 114 printf("\nBoard serial read failed!\n"); 115 } else { 116 u8 *nr; 117 118 nr = (u8 *)&serialnr->low; 119 nr[0] = buf[5]; 120 nr[1] = buf[4]; 121 nr[2] = buf[3]; 122 nr[3] = buf[2]; 123 nr = (u8 *)&serialnr->high; 124 nr[0] = buf[1]; 125 nr[1] = buf[0]; 126 nr[2] = 0; 127 nr[3] = 0; 128 } 129 } 130 131 int board_early_init_f(void) 132 { 133 /* enable the console UART */ 134 writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST | 135 DAVINCI_UART_PWREMU_MGMT_UTRST), 136 &davinci_uart1_ctrl_regs->pwremu_mgmt); 137 138 /* 139 * Power on required peripherals 140 * ARM does not have access by default to PSC0 and PSC1 141 * assuming here that the DSP bootloader has set the IOPU 142 * such that PSC access is available to ARM 143 */ 144 if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc))) 145 return 1; 146 147 return 0; 148 } 149 150 int board_init(void) 151 { 152 irq_init(); 153 154 /* arch number of the board */ 155 /* LEGO didn't register for a unique number and uses da850evm */ 156 gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM; 157 158 /* address of boot parameters */ 159 gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR; 160 161 /* setup the SUSPSRC for ARM to control emulation suspend */ 162 writel(readl(&davinci_syscfg_regs->suspsrc) & 163 ~(DAVINCI_SYSCFG_SUSPSRC_I2C | 164 DAVINCI_SYSCFG_SUSPSRC_SPI0 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 | 165 DAVINCI_SYSCFG_SUSPSRC_UART1), 166 &davinci_syscfg_regs->suspsrc); 167 168 /* configure pinmux settings */ 169 if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes))) 170 return 1; 171 172 return 0; 173 } 174