1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT) 2 /* 3 * Copyright (c) 2018 Microsemi Corporation 4 */ 5 6 #include <common.h> 7 #include <asm/io.h> 8 #include <asm/addrspace.h> 9 #include <asm/types.h> 10 #include <environment.h> 11 #include <spi.h> 12 #include <led.h> 13 14 DECLARE_GLOBAL_DATA_PTR; 15 16 enum { 17 BOARD_TYPE_PCB120 = 0xAABBCC00, 18 BOARD_TYPE_PCB123, 19 }; 20 21 void board_debug_uart_init(void) 22 { 23 /* too early for the pinctrl driver, so configure the UART pins here */ 24 mscc_gpio_set_alternate(6, 1); 25 mscc_gpio_set_alternate(7, 1); 26 } 27 28 int board_early_init_r(void) 29 { 30 /* Prepare SPI controller to be used in master mode */ 31 writel(0, BASE_CFG + ICPU_SW_MODE); 32 clrsetbits_le32(BASE_CFG + ICPU_GENERAL_CTRL, 33 ICPU_GENERAL_CTRL_IF_SI_OWNER_M, 34 ICPU_GENERAL_CTRL_IF_SI_OWNER(2)); 35 36 /* Address of boot parameters */ 37 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE; 38 39 /* LED setup */ 40 if (IS_ENABLED(CONFIG_LED)) 41 led_default_state(); 42 43 return 0; 44 } 45 46 static void do_board_detect(void) 47 { 48 u16 dummy = 0; 49 50 /* Enable MIIM */ 51 mscc_gpio_set_alternate(14, 1); 52 mscc_gpio_set_alternate(15, 1); 53 if (mscc_phy_rd(1, 0, 0, &dummy) == 0) 54 gd->board_type = BOARD_TYPE_PCB120; 55 else 56 gd->board_type = BOARD_TYPE_PCB123; 57 } 58 59 #if defined(CONFIG_MULTI_DTB_FIT) 60 int board_fit_config_name_match(const char *name) 61 { 62 if (gd->board_type == BOARD_TYPE_PCB120 && 63 strcmp(name, "ocelot_pcb120") == 0) 64 return 0; 65 66 if (gd->board_type == BOARD_TYPE_PCB123 && 67 strcmp(name, "ocelot_pcb123") == 0) 68 return 0; 69 70 return -1; 71 } 72 #endif 73 74 #if defined(CONFIG_DTB_RESELECT) 75 int embedded_dtb_select(void) 76 { 77 do_board_detect(); 78 fdtdec_setup(); 79 80 return 0; 81 } 82 #endif 83