1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2016 Rockchip Electronics Co., Ltd 4 * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH 5 */ 6 7 #include <common.h> 8 #include <asm/arch/bootrom.h> 9 #include <asm/arch/clock.h> 10 #include <asm/arch/grf_rk3399.h> 11 #include <asm/arch/hardware.h> 12 #include <asm/arch/periph.h> 13 #include <asm/io.h> 14 #include <debug_uart.h> 15 #include <dm.h> 16 #include <dm/pinctrl.h> 17 #include <ram.h> 18 #include <spl.h> 19 #include <syscon.h> 20 21 void board_return_to_bootrom(void) 22 { 23 back_to_bootrom(BROM_BOOT_NEXTSTAGE); 24 } 25 26 static const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = { 27 [BROM_BOOTSOURCE_EMMC] = "/sdhci@fe330000", 28 [BROM_BOOTSOURCE_SPINOR] = "/spi@ff1d0000", 29 [BROM_BOOTSOURCE_SD] = "/dwmmc@fe320000", 30 }; 31 32 const char *board_spl_was_booted_from(void) 33 { 34 u32 bootdevice_brom_id = readl(RK3399_BROM_BOOTSOURCE_ID_ADDR); 35 const char *bootdevice_ofpath = NULL; 36 37 if (bootdevice_brom_id < ARRAY_SIZE(boot_devices)) 38 bootdevice_ofpath = boot_devices[bootdevice_brom_id]; 39 40 if (bootdevice_ofpath) 41 debug("%s: brom_bootdevice_id %x maps to '%s'\n", 42 __func__, bootdevice_brom_id, bootdevice_ofpath); 43 else 44 debug("%s: failed to resolve brom_bootdevice_id %x\n", 45 __func__, bootdevice_brom_id); 46 47 return bootdevice_ofpath; 48 } 49 50 u32 spl_boot_device(void) 51 { 52 u32 boot_device = BOOT_DEVICE_MMC1; 53 54 if (CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM)) 55 return BOOT_DEVICE_BOOTROM; 56 57 return boot_device; 58 } 59 60 const char *spl_decode_boot_device(u32 boot_device) 61 { 62 int i; 63 static const struct { 64 u32 boot_device; 65 const char *ofpath; 66 } spl_boot_devices_tbl[] = { 67 { BOOT_DEVICE_MMC1, "/dwmmc@fe320000" }, 68 { BOOT_DEVICE_MMC2, "/sdhci@fe330000" }, 69 { BOOT_DEVICE_SPI, "/spi@ff1d0000" }, 70 }; 71 72 for (i = 0; i < ARRAY_SIZE(spl_boot_devices_tbl); ++i) 73 if (spl_boot_devices_tbl[i].boot_device == boot_device) 74 return spl_boot_devices_tbl[i].ofpath; 75 76 return NULL; 77 } 78 79 void spl_perform_fixups(struct spl_image_info *spl_image) 80 { 81 void *blob = spl_image->fdt_addr; 82 const char *boot_ofpath; 83 int chosen; 84 85 /* 86 * Inject the ofpath of the device the full U-Boot (or Linux in 87 * Falcon-mode) was booted from into the FDT, if a FDT has been 88 * loaded at the same time. 89 */ 90 if (!blob) 91 return; 92 93 boot_ofpath = spl_decode_boot_device(spl_image->boot_device); 94 if (!boot_ofpath) { 95 pr_err("%s: could not map boot_device to ofpath\n", __func__); 96 return; 97 } 98 99 chosen = fdt_find_or_add_subnode(blob, 0, "chosen"); 100 if (chosen < 0) { 101 pr_err("%s: could not find/create '/chosen'\n", __func__); 102 return; 103 } 104 fdt_setprop_string(blob, chosen, 105 "u-boot,spl-boot-device", boot_ofpath); 106 } 107 108 #define TIMER_CHN10_BASE 0xff8680a0 109 #define TIMER_END_COUNT_L 0x00 110 #define TIMER_END_COUNT_H 0x04 111 #define TIMER_INIT_COUNT_L 0x10 112 #define TIMER_INIT_COUNT_H 0x14 113 #define TIMER_CONTROL_REG 0x1c 114 115 #define TIMER_EN 0x1 116 #define TIMER_FMODE (0 << 1) 117 #define TIMER_RMODE (1 << 1) 118 119 void secure_timer_init(void) 120 { 121 writel(0xffffffff, TIMER_CHN10_BASE + TIMER_END_COUNT_L); 122 writel(0xffffffff, TIMER_CHN10_BASE + TIMER_END_COUNT_H); 123 writel(0, TIMER_CHN10_BASE + TIMER_INIT_COUNT_L); 124 writel(0, TIMER_CHN10_BASE + TIMER_INIT_COUNT_H); 125 writel(TIMER_EN | TIMER_FMODE, TIMER_CHN10_BASE + TIMER_CONTROL_REG); 126 } 127 128 void board_debug_uart_init(void) 129 { 130 #define GRF_BASE 0xff770000 131 struct rk3399_grf_regs * const grf = (void *)GRF_BASE; 132 133 #if defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff180000) 134 /* Enable early UART0 on the RK3399 */ 135 rk_clrsetreg(&grf->gpio2c_iomux, 136 GRF_GPIO2C0_SEL_MASK, 137 GRF_UART0BT_SIN << GRF_GPIO2C0_SEL_SHIFT); 138 rk_clrsetreg(&grf->gpio2c_iomux, 139 GRF_GPIO2C1_SEL_MASK, 140 GRF_UART0BT_SOUT << GRF_GPIO2C1_SEL_SHIFT); 141 #else 142 /* Enable early UART2 channel C on the RK3399 */ 143 rk_clrsetreg(&grf->gpio4c_iomux, 144 GRF_GPIO4C3_SEL_MASK, 145 GRF_UART2DGBC_SIN << GRF_GPIO4C3_SEL_SHIFT); 146 rk_clrsetreg(&grf->gpio4c_iomux, 147 GRF_GPIO4C4_SEL_MASK, 148 GRF_UART2DBGC_SOUT << GRF_GPIO4C4_SEL_SHIFT); 149 /* Set channel C as UART2 input */ 150 rk_clrsetreg(&grf->soc_con7, 151 GRF_UART_DBG_SEL_MASK, 152 GRF_UART_DBG_SEL_C << GRF_UART_DBG_SEL_SHIFT); 153 #endif 154 } 155 156 void board_init_f(ulong dummy) 157 { 158 struct udevice *pinctrl; 159 struct udevice *dev; 160 struct rk3399_pmusgrf_regs *sgrf; 161 struct rk3399_grf_regs *grf; 162 int ret; 163 164 #define EARLY_UART 165 #ifdef EARLY_UART 166 /* 167 * Debug UART can be used from here if required: 168 * 169 * debug_uart_init(); 170 * printch('a'); 171 * printhex8(0x1234); 172 * printascii("string"); 173 */ 174 debug_uart_init(); 175 printascii("U-Boot SPL board init\n"); 176 #endif 177 178 ret = spl_early_init(); 179 if (ret) { 180 debug("spl_early_init() failed: %d\n", ret); 181 hang(); 182 } 183 184 /* 185 * Disable DDR and SRAM security regions. 186 * 187 * As we are entered from the BootROM, the region from 188 * 0x0 through 0xfffff (i.e. the first MB of memory) will 189 * be protected. This will cause issues with the DW_MMC 190 * driver, which tries to DMA from/to the stack (likely) 191 * located in this range. 192 */ 193 sgrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUSGRF); 194 rk_clrsetreg(&sgrf->ddr_rgn_con[16], 0x1ff, 0); 195 rk_clrreg(&sgrf->slv_secure_con4, 0x2000); 196 197 /* eMMC clock generator: disable the clock multipilier */ 198 grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); 199 rk_clrreg(&grf->emmccore_con[11], 0x0ff); 200 201 secure_timer_init(); 202 203 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 204 if (ret) { 205 debug("Pinctrl init failed: %d\n", ret); 206 return; 207 } 208 209 ret = uclass_get_device(UCLASS_RAM, 0, &dev); 210 if (ret) { 211 debug("DRAM init failed: %d\n", ret); 212 return; 213 } 214 } 215 216 #ifdef CONFIG_SPL_LOAD_FIT 217 int board_fit_config_name_match(const char *name) 218 { 219 /* Just empty function now - can't decide what to choose */ 220 debug("%s: %s\n", __func__, name); 221 222 return 0; 223 } 224 #endif 225