1 /* 2 * Copyright (C) 2017 Amarula Solutions 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <debug_uart.h> 9 #include <dm.h> 10 #include <ram.h> 11 #include <spl.h> 12 #include <version.h> 13 #include <asm/io.h> 14 #include <asm/arch/bootrom.h> 15 #include <asm/arch/clock.h> 16 #include <asm/arch/grf_rk3288.h> 17 #include <asm/arch/periph.h> 18 #include <asm/arch/pmu_rk3288.h> 19 #include <asm/arch/sys_proto.h> 20 #include <asm/arch/timer.h> 21 22 #define GRF_BASE 0xff770000 23 void board_init_f(ulong dummy) 24 { 25 struct udevice *dev; 26 int ret; 27 28 /* Example code showing how to enable the debug UART on RK3288 */ 29 /* Enable early UART on the RK3288 */ 30 struct rk3288_grf * const grf = (void *)GRF_BASE; 31 32 rk_clrsetreg(&grf->gpio7ch_iomux, GPIO7C7_MASK << GPIO7C7_SHIFT | 33 GPIO7C6_MASK << GPIO7C6_SHIFT, 34 GPIO7C7_UART2DBG_SOUT << GPIO7C7_SHIFT | 35 GPIO7C6_UART2DBG_SIN << GPIO7C6_SHIFT); 36 /* 37 * Debug UART can be used from here if required: 38 * 39 * debug_uart_init(); 40 * printch('a'); 41 * printhex8(0x1234); 42 * printascii("string"); 43 */ 44 debug_uart_init(); 45 46 ret = spl_early_init(); 47 if (ret) { 48 debug("spl_early_init() failed: %d\n", ret); 49 hang(); 50 } 51 52 rockchip_timer_init(); 53 configure_l2ctlr(); 54 55 ret = rockchip_get_clk(&dev); 56 if (ret) { 57 debug("CLK init failed: %d\n", ret); 58 return; 59 } 60 61 ret = uclass_get_device(UCLASS_RAM, 0, &dev); 62 if (ret) { 63 debug("DRAM init failed: %d\n", ret); 64 return; 65 } 66 } 67 68 void board_return_to_bootrom(void) 69 { 70 back_to_bootrom(BROM_BOOT_NEXTSTAGE); 71 } 72 73 u32 spl_boot_device(void) 74 { 75 return BOOT_DEVICE_BOOTROM; 76 } 77 78 void spl_board_init(void) 79 { 80 puts("\nU-Boot TPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \ 81 U_BOOT_TIME ")\n"); 82 } 83