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 #if CONFIG_IS_ENABLED(OF_CONTROL) 27 ulong ram_base; 28 29 void dram_init_banksize(void) 30 { 31 gd->bd->bi_dram[0].start = ram_base; 32 gd->bd->bi_dram[0].size = get_effective_memsize(); 33 } 34 35 int dram_init(void) 36 { 37 int node; 38 fdt_addr_t addr; 39 fdt_size_t size; 40 const void *blob = gd->fdt_blob; 41 42 node = fdt_node_offset_by_prop_value(blob, -1, "device_type", 43 "memory", 7); 44 if (node == -FDT_ERR_NOTFOUND) { 45 debug("DRAM: Can't get memory node\n"); 46 return 1; 47 } 48 addr = fdtdec_get_addr_size(blob, node, "reg", &size); 49 if (addr == FDT_ADDR_T_NONE || size == 0) { 50 debug("DRAM: Can't get base address or size\n"); 51 return 1; 52 } 53 ram_base = addr; 54 55 gd->ram_top = addr; /* In setup_dest_addr() is done +ram_size */ 56 gd->ram_size = size; 57 58 return 0; 59 }; 60 #else 61 int dram_init(void) 62 { 63 gd->ram_size = CONFIG_SYS_SDRAM_SIZE; 64 65 return 0; 66 } 67 #endif 68 69 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 70 { 71 #ifndef CONFIG_SPL_BUILD 72 #ifdef CONFIG_XILINX_GPIO 73 if (reset_pin != -1) 74 gpio_direction_output(reset_pin, 1); 75 #endif 76 77 #ifdef CONFIG_XILINX_TB_WATCHDOG 78 hw_watchdog_disable(); 79 #endif 80 #endif 81 puts ("Reseting board\n"); 82 __asm__ __volatile__ (" mts rmsr, r0;" \ 83 "bra r0"); 84 85 return 0; 86 } 87 88 int gpio_init (void) 89 { 90 #ifdef CONFIG_XILINX_GPIO 91 reset_pin = gpio_alloc(CONFIG_SYS_GPIO_0_ADDR, "reset", 1); 92 if (reset_pin != -1) 93 gpio_request(reset_pin, "reset_pin"); 94 #endif 95 return 0; 96 } 97 98 void board_init(void) 99 { 100 gpio_init(); 101 } 102