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 external_cs_manage(struct udevice *dev, bool enable) 22 { 23 u32 cs = spi_chip_select(dev); 24 /* IF_SI0_OWNER, select the owner of the SI interface 25 * Encoding: 0: SI Slave 26 * 1: SI Boot Master 27 * 2: SI Master Controller 28 */ 29 if (!enable) { 30 writel(ICPU_SW_MODE_SW_PIN_CTRL_MODE | 31 ICPU_SW_MODE_SW_SPI_CS(BIT(cs)), 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 } else { 36 writel(0, BASE_CFG + ICPU_SW_MODE); 37 clrsetbits_le32(BASE_CFG + ICPU_GENERAL_CTRL, 38 ICPU_GENERAL_CTRL_IF_SI_OWNER_M, 39 ICPU_GENERAL_CTRL_IF_SI_OWNER(1)); 40 } 41 } 42 43 void board_debug_uart_init(void) 44 { 45 /* too early for the pinctrl driver, so configure the UART pins here */ 46 mscc_gpio_set_alternate(6, 1); 47 mscc_gpio_set_alternate(7, 1); 48 } 49 50 int board_early_init_r(void) 51 { 52 /* Prepare SPI controller to be used in master mode */ 53 writel(0, BASE_CFG + ICPU_SW_MODE); 54 clrsetbits_le32(BASE_CFG + ICPU_GENERAL_CTRL, 55 ICPU_GENERAL_CTRL_IF_SI_OWNER_M, 56 ICPU_GENERAL_CTRL_IF_SI_OWNER(2)); 57 58 /* Address of boot parameters */ 59 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE; 60 61 /* LED setup */ 62 if (IS_ENABLED(CONFIG_LED)) 63 led_default_state(); 64 65 return 0; 66 } 67 68 static void do_board_detect(void) 69 { 70 u16 dummy = 0; 71 72 /* Enable MIIM */ 73 mscc_gpio_set_alternate(14, 1); 74 mscc_gpio_set_alternate(15, 1); 75 if (mscc_phy_rd(1, 0, 0, &dummy) == 0) 76 gd->board_type = BOARD_TYPE_PCB120; 77 else 78 gd->board_type = BOARD_TYPE_PCB123; 79 } 80 81 #if defined(CONFIG_MULTI_DTB_FIT) 82 int board_fit_config_name_match(const char *name) 83 { 84 if (gd->board_type == BOARD_TYPE_PCB120 && 85 strcmp(name, "ocelot_pcb120") == 0) 86 return 0; 87 88 if (gd->board_type == BOARD_TYPE_PCB123 && 89 strcmp(name, "ocelot_pcb123") == 0) 90 return 0; 91 92 return -1; 93 } 94 #endif 95 96 #if defined(CONFIG_DTB_RESELECT) 97 int embedded_dtb_select(void) 98 { 99 do_board_detect(); 100 fdtdec_setup(); 101 102 return 0; 103 } 104 #endif 105