1 /* 2 * (C) Copyright 2010-2015 3 * NVIDIA Corporation <www.nvidia.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <spl.h> 10 #include <asm/io.h> 11 #include <asm/arch/clock.h> 12 #include <asm/arch/funcmux.h> 13 #include <asm/arch/mc.h> 14 #include <asm/arch/tegra.h> 15 #include <asm/arch-tegra/ap.h> 16 #include <asm/arch-tegra/board.h> 17 #include <asm/arch-tegra/pmc.h> 18 #include <asm/arch-tegra/sys_proto.h> 19 #include <asm/arch-tegra/warmboot.h> 20 21 void save_boot_params_ret(void); 22 23 DECLARE_GLOBAL_DATA_PTR; 24 25 enum { 26 /* UARTs which we can enable */ 27 UARTA = 1 << 0, 28 UARTB = 1 << 1, 29 UARTC = 1 << 2, 30 UARTD = 1 << 3, 31 UARTE = 1 << 4, 32 UART_COUNT = 5, 33 }; 34 35 static bool from_spl __attribute__ ((section(".data"))); 36 37 #ifndef CONFIG_SPL_BUILD 38 void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) 39 { 40 from_spl = r0 != UBOOT_NOT_LOADED_FROM_SPL; 41 save_boot_params_ret(); 42 } 43 #endif 44 45 bool spl_was_boot_source(void) 46 { 47 return from_spl; 48 } 49 50 #if defined(CONFIG_TEGRA_SUPPORT_NON_SECURE) 51 #if !defined(CONFIG_TEGRA124) 52 #error tegra_cpu_is_non_secure has only been validated on Tegra124 53 #endif 54 bool tegra_cpu_is_non_secure(void) 55 { 56 /* 57 * This register reads 0xffffffff in non-secure mode. This register 58 * only implements bits 31:20, so the lower bits will always read 0 in 59 * secure mode. Thus, the lower bits are an indicator for secure vs. 60 * non-secure mode. 61 */ 62 struct mc_ctlr *mc = (struct mc_ctlr *)NV_PA_MC_BASE; 63 uint32_t mc_s_cfg0 = readl(&mc->mc_security_cfg0); 64 return (mc_s_cfg0 & 1) == 1; 65 } 66 #endif 67 68 /* Read the RAM size directly from the memory controller */ 69 unsigned int query_sdram_size(void) 70 { 71 struct mc_ctlr *const mc = (struct mc_ctlr *)NV_PA_MC_BASE; 72 u32 emem_cfg, size_bytes; 73 74 emem_cfg = readl(&mc->mc_emem_cfg); 75 #if defined(CONFIG_TEGRA20) 76 debug("mc->mc_emem_cfg (MEM_SIZE_KB) = 0x%08x\n", emem_cfg); 77 size_bytes = get_ram_size((void *)PHYS_SDRAM_1, emem_cfg * 1024); 78 #else 79 debug("mc->mc_emem_cfg (MEM_SIZE_MB) = 0x%08x\n", emem_cfg); 80 /* 81 * If >=4GB RAM is present, the byte RAM size won't fit into 32-bits 82 * and will wrap. Clip the reported size to the maximum that a 32-bit 83 * variable can represent (rounded to a page). 84 */ 85 if (emem_cfg >= 4096) { 86 size_bytes = U32_MAX & ~(0x1000 - 1); 87 } else { 88 /* RAM size EMC is programmed to. */ 89 size_bytes = emem_cfg * 1024 * 1024; 90 /* 91 * If all RAM fits within 32-bits, it can be accessed without 92 * LPAE, so go test the RAM size. Otherwise, we can't access 93 * all the RAM, and get_ram_size() would get confused, so 94 * avoid using it. There's no reason we should need this 95 * validation step anyway. 96 */ 97 if (emem_cfg <= (0 - PHYS_SDRAM_1) / (1024 * 1024)) 98 size_bytes = get_ram_size((void *)PHYS_SDRAM_1, 99 size_bytes); 100 } 101 #endif 102 103 #if defined(CONFIG_TEGRA30) || defined(CONFIG_TEGRA114) 104 /* External memory limited to 2047 MB due to IROM/HI-VEC */ 105 if (size_bytes == SZ_2G) 106 size_bytes -= SZ_1M; 107 #endif 108 109 return size_bytes; 110 } 111 112 int dram_init(void) 113 { 114 /* We do not initialise DRAM here. We just query the size */ 115 gd->ram_size = query_sdram_size(); 116 return 0; 117 } 118 119 static int uart_configs[] = { 120 #if defined(CONFIG_TEGRA20) 121 #if defined(CONFIG_TEGRA_UARTA_UAA_UAB) 122 FUNCMUX_UART1_UAA_UAB, 123 #elif defined(CONFIG_TEGRA_UARTA_GPU) 124 FUNCMUX_UART1_GPU, 125 #elif defined(CONFIG_TEGRA_UARTA_SDIO1) 126 FUNCMUX_UART1_SDIO1, 127 #else 128 FUNCMUX_UART1_IRRX_IRTX, 129 #endif 130 FUNCMUX_UART2_UAD, 131 -1, 132 FUNCMUX_UART4_GMC, 133 -1, 134 #elif defined(CONFIG_TEGRA30) 135 FUNCMUX_UART1_ULPI, /* UARTA */ 136 -1, 137 -1, 138 -1, 139 -1, 140 #elif defined(CONFIG_TEGRA114) 141 -1, 142 -1, 143 -1, 144 FUNCMUX_UART4_GMI, /* UARTD */ 145 -1, 146 #elif defined(CONFIG_TEGRA124) 147 FUNCMUX_UART1_KBC, /* UARTA */ 148 -1, 149 -1, 150 FUNCMUX_UART4_GPIO, /* UARTD */ 151 -1, 152 #else /* Tegra210 */ 153 FUNCMUX_UART1_UART1, /* UARTA */ 154 -1, 155 -1, 156 FUNCMUX_UART4_UART4, /* UARTD */ 157 -1, 158 #endif 159 }; 160 161 /** 162 * Set up the specified uarts 163 * 164 * @param uarts_ids Mask containing UARTs to init (UARTx) 165 */ 166 static void setup_uarts(int uart_ids) 167 { 168 static enum periph_id id_for_uart[] = { 169 PERIPH_ID_UART1, 170 PERIPH_ID_UART2, 171 PERIPH_ID_UART3, 172 PERIPH_ID_UART4, 173 PERIPH_ID_UART5, 174 }; 175 size_t i; 176 177 for (i = 0; i < UART_COUNT; i++) { 178 if (uart_ids & (1 << i)) { 179 enum periph_id id = id_for_uart[i]; 180 181 funcmux_select(id, uart_configs[i]); 182 clock_ll_start_uart(id); 183 } 184 } 185 } 186 187 void board_init_uart_f(void) 188 { 189 int uart_ids = 0; /* bit mask of which UART ids to enable */ 190 191 #ifdef CONFIG_TEGRA_ENABLE_UARTA 192 uart_ids |= UARTA; 193 #endif 194 #ifdef CONFIG_TEGRA_ENABLE_UARTB 195 uart_ids |= UARTB; 196 #endif 197 #ifdef CONFIG_TEGRA_ENABLE_UARTC 198 uart_ids |= UARTC; 199 #endif 200 #ifdef CONFIG_TEGRA_ENABLE_UARTD 201 uart_ids |= UARTD; 202 #endif 203 #ifdef CONFIG_TEGRA_ENABLE_UARTE 204 uart_ids |= UARTE; 205 #endif 206 setup_uarts(uart_ids); 207 } 208 209 #if !defined(CONFIG_SYS_DCACHE_OFF) && !defined(CONFIG_ARM64) 210 void enable_caches(void) 211 { 212 /* Enable D-cache. I-cache is already enabled in start.S */ 213 dcache_enable(); 214 } 215 #endif 216