1 /* 2 * (C) Copyright 2012 Henrik Nordstrom <henrik@henriknordstrom.net> 3 * 4 * (C) Copyright 2007-2011 5 * Allwinner Technology Co., Ltd. <www.allwinnertech.com> 6 * Tom Cubie <tangliang@allwinnertech.com> 7 * 8 * Some init for sunxi platform. 9 * 10 * SPDX-License-Identifier: GPL-2.0+ 11 */ 12 13 #include <common.h> 14 #include <mmc.h> 15 #include <i2c.h> 16 #include <serial.h> 17 #include <spl.h> 18 #include <asm/gpio.h> 19 #include <asm/io.h> 20 #include <asm/arch/clock.h> 21 #include <asm/arch/gpio.h> 22 #include <asm/arch/spl.h> 23 #include <asm/arch/sys_proto.h> 24 #include <asm/arch/timer.h> 25 #include <asm/arch/tzpc.h> 26 #include <asm/arch/mmc.h> 27 28 #include <linux/compiler.h> 29 30 struct fel_stash { 31 uint32_t sp; 32 uint32_t lr; 33 uint32_t cpsr; 34 uint32_t sctlr; 35 uint32_t vbar; 36 uint32_t cr; 37 }; 38 39 struct fel_stash fel_stash __attribute__((section(".data"))); 40 41 #ifdef CONFIG_ARM64 42 #include <asm/armv8/mmu.h> 43 44 static struct mm_region sunxi_mem_map[] = { 45 { 46 /* SRAM, MMIO regions */ 47 .virt = 0x0UL, 48 .phys = 0x0UL, 49 .size = 0x40000000UL, 50 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | 51 PTE_BLOCK_NON_SHARE 52 }, { 53 /* RAM */ 54 .virt = 0x40000000UL, 55 .phys = 0x40000000UL, 56 .size = 0x80000000UL, 57 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | 58 PTE_BLOCK_INNER_SHARE 59 }, { 60 /* List terminator */ 61 0, 62 } 63 }; 64 struct mm_region *mem_map = sunxi_mem_map; 65 #endif 66 67 static int gpio_init(void) 68 { 69 #if CONFIG_CONS_INDEX == 1 && defined(CONFIG_UART0_PORT_F) 70 #if defined(CONFIG_MACH_SUN4I) || \ 71 defined(CONFIG_MACH_SUN7I) || \ 72 defined(CONFIG_MACH_SUN8I_R40) 73 /* disable GPB22,23 as uart0 tx,rx to avoid conflict */ 74 sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUNXI_GPIO_INPUT); 75 sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUNXI_GPIO_INPUT); 76 #endif 77 #if defined(CONFIG_MACH_SUN8I) && !defined(CONFIG_MACH_SUN8I_R40) 78 sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUN8I_GPF_UART0); 79 sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUN8I_GPF_UART0); 80 #else 81 sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUNXI_GPF_UART0); 82 sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUNXI_GPF_UART0); 83 #endif 84 sunxi_gpio_set_pull(SUNXI_GPF(4), 1); 85 #elif CONFIG_CONS_INDEX == 1 && (defined(CONFIG_MACH_SUN4I) || \ 86 defined(CONFIG_MACH_SUN7I) || \ 87 defined(CONFIG_MACH_SUN8I_R40)) 88 sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUN4I_GPB_UART0); 89 sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUN4I_GPB_UART0); 90 sunxi_gpio_set_pull(SUNXI_GPB(23), SUNXI_GPIO_PULL_UP); 91 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN5I) 92 sunxi_gpio_set_cfgpin(SUNXI_GPB(19), SUN5I_GPB_UART0); 93 sunxi_gpio_set_cfgpin(SUNXI_GPB(20), SUN5I_GPB_UART0); 94 sunxi_gpio_set_pull(SUNXI_GPB(20), SUNXI_GPIO_PULL_UP); 95 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN6I) 96 sunxi_gpio_set_cfgpin(SUNXI_GPH(20), SUN6I_GPH_UART0); 97 sunxi_gpio_set_cfgpin(SUNXI_GPH(21), SUN6I_GPH_UART0); 98 sunxi_gpio_set_pull(SUNXI_GPH(21), SUNXI_GPIO_PULL_UP); 99 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_A33) 100 sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUN8I_A33_GPB_UART0); 101 sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUN8I_A33_GPB_UART0); 102 sunxi_gpio_set_pull(SUNXI_GPB(1), SUNXI_GPIO_PULL_UP); 103 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUNXI_H3_H5) 104 sunxi_gpio_set_cfgpin(SUNXI_GPA(4), SUN8I_H3_GPA_UART0); 105 sunxi_gpio_set_cfgpin(SUNXI_GPA(5), SUN8I_H3_GPA_UART0); 106 sunxi_gpio_set_pull(SUNXI_GPA(5), SUNXI_GPIO_PULL_UP); 107 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN50I) 108 sunxi_gpio_set_cfgpin(SUNXI_GPB(8), SUN50I_GPB_UART0); 109 sunxi_gpio_set_cfgpin(SUNXI_GPB(9), SUN50I_GPB_UART0); 110 sunxi_gpio_set_pull(SUNXI_GPB(9), SUNXI_GPIO_PULL_UP); 111 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_A83T) 112 sunxi_gpio_set_cfgpin(SUNXI_GPB(9), SUN8I_A83T_GPB_UART0); 113 sunxi_gpio_set_cfgpin(SUNXI_GPB(10), SUN8I_A83T_GPB_UART0); 114 sunxi_gpio_set_pull(SUNXI_GPB(10), SUNXI_GPIO_PULL_UP); 115 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_V3S) 116 sunxi_gpio_set_cfgpin(SUNXI_GPB(8), SUN8I_V3S_GPB_UART0); 117 sunxi_gpio_set_cfgpin(SUNXI_GPB(9), SUN8I_V3S_GPB_UART0); 118 sunxi_gpio_set_pull(SUNXI_GPB(9), SUNXI_GPIO_PULL_UP); 119 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN9I) 120 sunxi_gpio_set_cfgpin(SUNXI_GPH(12), SUN9I_GPH_UART0); 121 sunxi_gpio_set_cfgpin(SUNXI_GPH(13), SUN9I_GPH_UART0); 122 sunxi_gpio_set_pull(SUNXI_GPH(13), SUNXI_GPIO_PULL_UP); 123 #elif CONFIG_CONS_INDEX == 2 && defined(CONFIG_MACH_SUN5I) 124 sunxi_gpio_set_cfgpin(SUNXI_GPG(3), SUN5I_GPG_UART1); 125 sunxi_gpio_set_cfgpin(SUNXI_GPG(4), SUN5I_GPG_UART1); 126 sunxi_gpio_set_pull(SUNXI_GPG(4), SUNXI_GPIO_PULL_UP); 127 #elif CONFIG_CONS_INDEX == 3 && defined(CONFIG_MACH_SUN8I) 128 sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUN8I_GPB_UART2); 129 sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUN8I_GPB_UART2); 130 sunxi_gpio_set_pull(SUNXI_GPB(1), SUNXI_GPIO_PULL_UP); 131 #elif CONFIG_CONS_INDEX == 5 && defined(CONFIG_MACH_SUN8I) 132 sunxi_gpio_set_cfgpin(SUNXI_GPL(2), SUN8I_GPL_R_UART); 133 sunxi_gpio_set_cfgpin(SUNXI_GPL(3), SUN8I_GPL_R_UART); 134 sunxi_gpio_set_pull(SUNXI_GPL(3), SUNXI_GPIO_PULL_UP); 135 #else 136 #error Unsupported console port number. Please fix pin mux settings in board.c 137 #endif 138 139 return 0; 140 } 141 142 #if defined(CONFIG_SPL_BOARD_LOAD_IMAGE) && defined(CONFIG_SPL_BUILD) 143 static int spl_board_load_image(struct spl_image_info *spl_image, 144 struct spl_boot_device *bootdev) 145 { 146 debug("Returning to FEL sp=%x, lr=%x\n", fel_stash.sp, fel_stash.lr); 147 return_to_fel(fel_stash.sp, fel_stash.lr); 148 149 return 0; 150 } 151 SPL_LOAD_IMAGE_METHOD("FEL", 0, BOOT_DEVICE_BOARD, spl_board_load_image); 152 #endif 153 154 void s_init(void) 155 { 156 /* 157 * Undocumented magic taken from boot0, without this DRAM 158 * access gets messed up (seems cache related). 159 * The boot0 sources describe this as: "config ema for cache sram" 160 */ 161 #if defined CONFIG_MACH_SUN6I 162 setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0x1800); 163 #elif defined CONFIG_MACH_SUN8I 164 __maybe_unused uint version; 165 166 /* Unlock sram version info reg, read it, relock */ 167 setbits_le32(SUNXI_SRAMC_BASE + 0x24, (1 << 15)); 168 version = readl(SUNXI_SRAMC_BASE + 0x24) >> 16; 169 clrbits_le32(SUNXI_SRAMC_BASE + 0x24, (1 << 15)); 170 171 /* 172 * Ideally this would be a switch case, but we do not know exactly 173 * which versions there are and which version needs which settings, 174 * so reproduce the per SoC code from the BSP. 175 */ 176 #if defined CONFIG_MACH_SUN8I_A23 177 if (version == 0x1650) 178 setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0x1800); 179 else /* 0x1661 ? */ 180 setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0xc0); 181 #elif defined CONFIG_MACH_SUN8I_A33 182 if (version != 0x1667) 183 setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0xc0); 184 #endif 185 /* A83T BSP never modifies SUNXI_SRAMC_BASE + 0x44 */ 186 /* No H3 BSP, boot0 seems to not modify SUNXI_SRAMC_BASE + 0x44 */ 187 #endif 188 189 #if !defined(CONFIG_ARM_CORTEX_CPU_IS_UP) && !defined(CONFIG_ARM64) 190 /* Enable SMP mode for CPU0, by setting bit 6 of Auxiliary Ctl reg */ 191 asm volatile( 192 "mrc p15, 0, r0, c1, c0, 1\n" 193 "orr r0, r0, #1 << 6\n" 194 "mcr p15, 0, r0, c1, c0, 1\n" 195 ::: "r0"); 196 #endif 197 #if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I_H3 198 /* Enable non-secure access to some peripherals */ 199 tzpc_init(); 200 #endif 201 202 clock_init(); 203 timer_init(); 204 gpio_init(); 205 #ifndef CONFIG_DM_I2C 206 i2c_init_board(); 207 #endif 208 eth_init_board(); 209 } 210 211 #ifdef CONFIG_SPL_BUILD 212 DECLARE_GLOBAL_DATA_PTR; 213 #endif 214 215 /* The sunxi internal brom will try to loader external bootloader 216 * from mmc0, nand flash, mmc2. 217 */ 218 uint32_t sunxi_get_boot_device(void) 219 { 220 int boot_source; 221 222 /* 223 * When booting from the SD card or NAND memory, the "eGON.BT0" 224 * signature is expected to be found in memory at the address 0x0004 225 * (see the "mksunxiboot" tool, which generates this header). 226 * 227 * When booting in the FEL mode over USB, this signature is patched in 228 * memory and replaced with something else by the 'fel' tool. This other 229 * signature is selected in such a way, that it can't be present in a 230 * valid bootable SD card image (because the BROM would refuse to 231 * execute the SPL in this case). 232 * 233 * This checks for the signature and if it is not found returns to 234 * the FEL code in the BROM to wait and receive the main u-boot 235 * binary over USB. If it is found, it determines where SPL was 236 * read from. 237 */ 238 if (!is_boot0_magic(SPL_ADDR + 4)) /* eGON.BT0 */ 239 return BOOT_DEVICE_BOARD; 240 241 boot_source = readb(SPL_ADDR + 0x28); 242 switch (boot_source) { 243 case SUNXI_BOOTED_FROM_MMC0: 244 return BOOT_DEVICE_MMC1; 245 case SUNXI_BOOTED_FROM_NAND: 246 return BOOT_DEVICE_NAND; 247 case SUNXI_BOOTED_FROM_MMC2: 248 return BOOT_DEVICE_MMC2; 249 case SUNXI_BOOTED_FROM_SPI: 250 return BOOT_DEVICE_SPI; 251 } 252 253 panic("Unknown boot source %d\n", boot_source); 254 return -1; /* Never reached */ 255 } 256 257 #ifdef CONFIG_SPL_BUILD 258 u32 spl_boot_device(void) 259 { 260 return sunxi_get_boot_device(); 261 } 262 263 /* No confirmation data available in SPL yet. Hardcode bootmode */ 264 u32 spl_boot_mode(const u32 boot_device) 265 { 266 return MMCSD_MODE_RAW; 267 } 268 269 void board_init_f(ulong dummy) 270 { 271 spl_init(); 272 preloader_console_init(); 273 274 #ifdef CONFIG_SPL_I2C_SUPPORT 275 /* Needed early by sunxi_board_init if PMU is enabled */ 276 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); 277 #endif 278 sunxi_board_init(); 279 } 280 #endif 281 282 void reset_cpu(ulong addr) 283 { 284 #if defined(CONFIG_SUNXI_GEN_SUN4I) || defined(CONFIG_MACH_SUN8I_R40) 285 static const struct sunxi_wdog *wdog = 286 &((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog; 287 288 /* Set the watchdog for its shortest interval (.5s) and wait */ 289 writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode); 290 writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl); 291 292 while (1) { 293 /* sun5i sometimes gets stuck without this */ 294 writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode); 295 } 296 #elif defined(CONFIG_SUNXI_GEN_SUN6I) 297 static const struct sunxi_wdog *wdog = 298 ((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog; 299 300 /* Set the watchdog for its shortest interval (.5s) and wait */ 301 writel(WDT_CFG_RESET, &wdog->cfg); 302 writel(WDT_MODE_EN, &wdog->mode); 303 writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl); 304 while (1) { } 305 #endif 306 } 307 308 #if !defined(CONFIG_SYS_DCACHE_OFF) && !defined(CONFIG_ARM64) 309 void enable_caches(void) 310 { 311 /* Enable D-cache. I-cache is already enabled in start.S */ 312 dcache_enable(); 313 } 314 #endif 315