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