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 13 DECLARE_GLOBAL_DATA_PTR; 14 15 enum { 16 BOARD_TYPE_PCB120 = 0xAABBCC00, 17 BOARD_TYPE_PCB123, 18 }; 19 20 void external_cs_manage(struct udevice *dev, bool enable) 21 { 22 u32 cs = spi_chip_select(dev); 23 /* IF_SI0_OWNER, select the owner of the SI interface 24 * Encoding: 0: SI Slave 25 * 1: SI Boot Master 26 * 2: SI Master Controller 27 */ 28 if (!enable) { 29 writel(ICPU_SW_MODE_SW_PIN_CTRL_MODE | 30 ICPU_SW_MODE_SW_SPI_CS(BIT(cs)), BASE_CFG + ICPU_SW_MODE); 31 clrsetbits_le32(BASE_CFG + ICPU_GENERAL_CTRL, 32 ICPU_GENERAL_CTRL_IF_SI_OWNER_M, 33 ICPU_GENERAL_CTRL_IF_SI_OWNER(2)); 34 } else { 35 writel(0, BASE_CFG + ICPU_SW_MODE); 36 clrsetbits_le32(BASE_CFG + ICPU_GENERAL_CTRL, 37 ICPU_GENERAL_CTRL_IF_SI_OWNER_M, 38 ICPU_GENERAL_CTRL_IF_SI_OWNER(1)); 39 } 40 } 41 42 void board_debug_uart_init(void) 43 { 44 /* too early for the pinctrl driver, so configure the UART pins here */ 45 mscc_gpio_set_alternate(6, 1); 46 mscc_gpio_set_alternate(7, 1); 47 } 48 49 int board_early_init_r(void) 50 { 51 /* Prepare SPI controller to be used in master mode */ 52 writel(0, BASE_CFG + ICPU_SW_MODE); 53 clrsetbits_le32(BASE_CFG + ICPU_GENERAL_CTRL, 54 ICPU_GENERAL_CTRL_IF_SI_OWNER_M, 55 ICPU_GENERAL_CTRL_IF_SI_OWNER(2)); 56 57 /* Address of boot parameters */ 58 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE; 59 return 0; 60 } 61 62 static void do_board_detect(void) 63 { 64 u16 dummy = 0; 65 66 /* Enable MIIM */ 67 mscc_gpio_set_alternate(14, 1); 68 mscc_gpio_set_alternate(15, 1); 69 if (mscc_phy_rd(1, 0, 0, &dummy) == 0) 70 gd->board_type = BOARD_TYPE_PCB120; 71 else 72 gd->board_type = BOARD_TYPE_PCB123; 73 } 74 75 #if defined(CONFIG_MULTI_DTB_FIT) 76 int board_fit_config_name_match(const char *name) 77 { 78 if (gd->board_type == BOARD_TYPE_PCB120 && 79 strcmp(name, "ocelot_pcb120") == 0) 80 return 0; 81 82 if (gd->board_type == BOARD_TYPE_PCB123 && 83 strcmp(name, "ocelot_pcb123") == 0) 84 return 0; 85 86 return -1; 87 } 88 #endif 89 90 #if defined(CONFIG_DTB_RESELECT) 91 int embedded_dtb_select(void) 92 { 93 do_board_detect(); 94 fdtdec_setup(); 95 96 return 0; 97 } 98 #endif 99