1 /* 2 * (C) Copyright 2007 Michal Simek 3 * 4 * Michal SIMEK <monstr@monstr.eu> 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 /* This is a board specific file. It's OK to include board specific 10 * header files */ 11 12 #include <common.h> 13 #include <config.h> 14 #include <fdtdec.h> 15 #include <asm/processor.h> 16 #include <asm/microblaze_intc.h> 17 #include <asm/asm.h> 18 #include <asm/gpio.h> 19 20 DECLARE_GLOBAL_DATA_PTR; 21 22 #ifdef CONFIG_XILINX_GPIO 23 static int reset_pin = -1; 24 #endif 25 26 ulong ram_base; 27 28 void dram_init_banksize(void) 29 { 30 gd->bd->bi_dram[0].start = ram_base; 31 gd->bd->bi_dram[0].size = get_effective_memsize(); 32 } 33 34 int dram_init(void) 35 { 36 int node; 37 fdt_addr_t addr; 38 fdt_size_t size; 39 const void *blob = gd->fdt_blob; 40 41 node = fdt_node_offset_by_prop_value(blob, -1, "device_type", 42 "memory", 7); 43 if (node == -FDT_ERR_NOTFOUND) { 44 debug("DRAM: Can't get memory node\n"); 45 return 1; 46 } 47 addr = fdtdec_get_addr_size(blob, node, "reg", &size); 48 if (addr == FDT_ADDR_T_NONE || size == 0) { 49 debug("DRAM: Can't get base address or size\n"); 50 return 1; 51 } 52 ram_base = addr; 53 54 gd->ram_top = addr; /* In setup_dest_addr() is done +ram_size */ 55 gd->ram_size = size; 56 57 return 0; 58 }; 59 60 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 61 { 62 #ifndef CONFIG_SPL_BUILD 63 #ifdef CONFIG_XILINX_GPIO 64 if (reset_pin != -1) 65 gpio_direction_output(reset_pin, 1); 66 #endif 67 68 #ifdef CONFIG_XILINX_TB_WATCHDOG 69 hw_watchdog_disable(); 70 #endif 71 #endif 72 puts ("Reseting board\n"); 73 __asm__ __volatile__ (" mts rmsr, r0;" \ 74 "bra r0"); 75 76 return 0; 77 } 78 79 static int gpio_init(void) 80 { 81 #ifdef CONFIG_XILINX_GPIO 82 reset_pin = gpio_alloc(CONFIG_SYS_GPIO_0_ADDR, "reset", 1); 83 if (reset_pin != -1) 84 gpio_request(reset_pin, "reset_pin"); 85 #endif 86 return 0; 87 } 88 89 int board_late_init(void) 90 { 91 gpio_init(); 92 93 return 0; 94 } 95