1 /* 2 * (C) Copyright 2013 3 * David Feng <fenghua@phytium.com.cn> 4 * Sharma Bhupesh <bhupesh.sharma@freescale.com> 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 #include <common.h> 9 #include <malloc.h> 10 #include <errno.h> 11 #include <netdev.h> 12 #include <asm/io.h> 13 #include <linux/compiler.h> 14 #include <asm/semihosting.h> 15 16 DECLARE_GLOBAL_DATA_PTR; 17 18 int board_init(void) 19 { 20 return 0; 21 } 22 23 int dram_init(void) 24 { 25 gd->ram_size = PHYS_SDRAM_1_SIZE; 26 return 0; 27 } 28 29 /* 30 * Board specific reset that is system reset. 31 */ 32 void reset_cpu(ulong addr) 33 { 34 } 35 36 #ifdef CONFIG_BOARD_LATE_INIT 37 int board_late_init(void) 38 { 39 #ifdef CONFIG_SEMIHOSTING 40 /* 41 * Please refer to doc/README.semihosting for a more complete 42 * description. 43 * 44 * We require that the board include file defines these env variables: 45 * - kernel_name 46 * - kernel_addr_r 47 * - initrd_name 48 * - initrd_addr_r 49 * - fdt_name 50 * - fdt_addr_r 51 * 52 * For the "fdt chosen" startup macro, this code will then define: 53 * - initrd_end (based on initrd_addr_r plus actual initrd_size) 54 * 55 * We will then load the kernel, initrd, and fdt into the specified 56 * locations in memory in a similar way that the ATF fastmodel code 57 * uses semihosting calls to load other boot stages and u-boot itself. 58 */ 59 60 /* Env variable strings */ 61 char *kernel_name = getenv("kernel_name"); 62 char *kernel_addr_str = getenv("kernel_addr_r"); 63 char *initrd_name = getenv("initrd_name"); 64 char *initrd_addr_str = getenv("initrd_addr_r"); 65 char *fdt_name = getenv("fdt_name"); 66 char *fdt_addr_str = getenv("fdt_addr_r"); 67 char initrd_end_str[64]; 68 69 /* Actual addresses converted from env variables */ 70 void *kernel_addr_r; 71 void *initrd_addr_r; 72 void *fdt_addr_r; 73 74 /* Actual initrd base and size */ 75 unsigned long initrd_base; 76 unsigned long initrd_size; 77 78 /* Space available */ 79 int avail; 80 81 /* Make sure the environment variables needed are set */ 82 if (!(kernel_addr_str && initrd_addr_str && fdt_addr_str)) { 83 printf("%s: Define {kernel/initrd/fdt}_addr_r\n", __func__); 84 return -1; 85 } 86 if (!(kernel_name && initrd_name && fdt_name)) { 87 printf("%s: Define {kernel/initrd/fdt}_name\n", __func__); 88 return -1; 89 } 90 91 /* Get exact initrd_size */ 92 initrd_size = smh_len(initrd_name); 93 if (initrd_size == -1) { 94 printf("%s: Can't get file size for \'%s\'\n", __func__, 95 initrd_name); 96 return -1; 97 } 98 99 /* Set initrd_end */ 100 initrd_base = simple_strtoul(initrd_addr_str, NULL, 16); 101 initrd_addr_r = (void *)initrd_base; 102 sprintf(initrd_end_str, "0x%lx", initrd_base + initrd_size - 1); 103 setenv("initrd_end", initrd_end_str); 104 105 /* Load kernel to memory */ 106 fdt_addr_r = (void *)simple_strtoul(fdt_addr_str, NULL, 16); 107 kernel_addr_r = (void *)simple_strtoul(kernel_addr_str, NULL, 16); 108 109 /* 110 * The kernel must be lower in memory than fdt and loading the 111 * kernel must not trample the fdt or vice versa. 112 */ 113 avail = fdt_addr_r - kernel_addr_r; 114 if (avail < 0) { 115 printf("%s: fdt must be after kernel\n", __func__); 116 return -1; 117 } 118 smh_load(kernel_name, kernel_addr_r, avail, 1); 119 120 /* Load fdt to memory */ 121 smh_load(fdt_name, fdt_addr_r, 0x20000, 1); 122 123 /* Load initrd to memory */ 124 smh_load(initrd_name, initrd_addr_r, initrd_size, 1); 125 126 #endif /* CONFIG_SEMIHOSTING */ 127 return 0; 128 } 129 #endif /* CONFIG_BOARD_LATE_INIT */ 130 131 /* 132 * Board specific ethernet initialization routine. 133 */ 134 int board_eth_init(bd_t *bis) 135 { 136 int rc = 0; 137 #ifdef CONFIG_SMC91111 138 rc = smc91111_initialize(0, CONFIG_SMC91111_BASE); 139 #endif 140 #ifdef CONFIG_SMC911X 141 rc = smc911x_initialize(0, CONFIG_SMC911X_BASE); 142 #endif 143 return rc; 144 } 145