1 // SPDX-License-Identifier: GPL-2.0+
5 * (C) Copyright 2007-2011
6 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
9 * Some init for sunxi platform.
20 #include <asm/cache.h>
23 #include <asm/arch/clock.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>
30 #include <linux/compiler.h>
41 struct fel_stash fel_stash __section(".data");
44 #include <asm/armv8/mmu.h>
46 static struct mm_region sunxi_mem_map[] = {
48 /* SRAM, MMIO regions */
52 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
58 .size = CONFIG_SUNXI_DRAM_MAX_SIZE,
59 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
66 struct mm_region *mem_map = sunxi_mem_map;
68 ulong board_get_usable_ram_top(ulong total_size)
70 /* Some devices (like the EMAC) have a 32-bit DMA limit. */
71 if (gd->ram_top > (1ULL << 32))
78 #ifdef CONFIG_SPL_BUILD
79 static int gpio_init(void)
81 __maybe_unused uint val;
82 #if CONFIG_CONS_INDEX == 1 && defined(CONFIG_UART0_PORT_F)
83 #if defined(CONFIG_MACH_SUN4I) || \
84 defined(CONFIG_MACH_SUN7I) || \
85 defined(CONFIG_MACH_SUN8I_R40)
86 /* disable GPB22,23 as uart0 tx,rx to avoid conflict */
87 sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUNXI_GPIO_INPUT);
88 sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUNXI_GPIO_INPUT);
90 #if (defined(CONFIG_MACH_SUN8I) && !defined(CONFIG_MACH_SUN8I_R40)) || \
91 defined(CONFIG_MACH_SUNIV)
92 sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUN8I_GPF_UART0);
93 sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUN8I_GPF_UART0);
95 sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUNXI_GPF_UART0);
96 sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUNXI_GPF_UART0);
98 sunxi_gpio_set_pull(SUNXI_GPF(4), 1);
99 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUNIV)
100 sunxi_gpio_set_cfgpin(SUNXI_GPE(0), SUNIV_GPE_UART0);
101 sunxi_gpio_set_cfgpin(SUNXI_GPE(1), SUNIV_GPE_UART0);
102 sunxi_gpio_set_pull(SUNXI_GPE(1), SUNXI_GPIO_PULL_UP);
103 #elif CONFIG_CONS_INDEX == 1 && (defined(CONFIG_MACH_SUN4I) || \
104 defined(CONFIG_MACH_SUN7I) || \
105 defined(CONFIG_MACH_SUN8I_R40))
106 sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUN4I_GPB_UART0);
107 sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUN4I_GPB_UART0);
108 sunxi_gpio_set_pull(SUNXI_GPB(23), SUNXI_GPIO_PULL_UP);
109 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN5I)
110 sunxi_gpio_set_cfgpin(SUNXI_GPB(19), SUN5I_GPB_UART0);
111 sunxi_gpio_set_cfgpin(SUNXI_GPB(20), SUN5I_GPB_UART0);
112 sunxi_gpio_set_pull(SUNXI_GPB(20), SUNXI_GPIO_PULL_UP);
113 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN6I)
114 sunxi_gpio_set_cfgpin(SUNXI_GPH(20), SUN6I_GPH_UART0);
115 sunxi_gpio_set_cfgpin(SUNXI_GPH(21), SUN6I_GPH_UART0);
116 sunxi_gpio_set_pull(SUNXI_GPH(21), SUNXI_GPIO_PULL_UP);
117 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_A33)
118 sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUN8I_A33_GPB_UART0);
119 sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUN8I_A33_GPB_UART0);
120 sunxi_gpio_set_pull(SUNXI_GPB(1), SUNXI_GPIO_PULL_UP);
121 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUNXI_H3_H5)
122 sunxi_gpio_set_cfgpin(SUNXI_GPA(4), SUN8I_H3_GPA_UART0);
123 sunxi_gpio_set_cfgpin(SUNXI_GPA(5), SUN8I_H3_GPA_UART0);
124 sunxi_gpio_set_pull(SUNXI_GPA(5), SUNXI_GPIO_PULL_UP);
125 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN50I)
126 sunxi_gpio_set_cfgpin(SUNXI_GPB(8), SUN50I_GPB_UART0);
127 sunxi_gpio_set_cfgpin(SUNXI_GPB(9), SUN50I_GPB_UART0);
128 sunxi_gpio_set_pull(SUNXI_GPB(9), SUNXI_GPIO_PULL_UP);
129 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN50I_H6)
130 sunxi_gpio_set_cfgpin(SUNXI_GPH(0), SUN50I_H6_GPH_UART0);
131 sunxi_gpio_set_cfgpin(SUNXI_GPH(1), SUN50I_H6_GPH_UART0);
132 sunxi_gpio_set_pull(SUNXI_GPH(1), SUNXI_GPIO_PULL_UP);
133 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN50I_H616)
134 sunxi_gpio_set_cfgpin(SUNXI_GPH(0), SUN50I_H616_GPH_UART0);
135 sunxi_gpio_set_cfgpin(SUNXI_GPH(1), SUN50I_H616_GPH_UART0);
136 sunxi_gpio_set_pull(SUNXI_GPH(1), SUNXI_GPIO_PULL_UP);
137 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_A83T)
138 sunxi_gpio_set_cfgpin(SUNXI_GPB(9), SUN8I_A83T_GPB_UART0);
139 sunxi_gpio_set_cfgpin(SUNXI_GPB(10), SUN8I_A83T_GPB_UART0);
140 sunxi_gpio_set_pull(SUNXI_GPB(10), SUNXI_GPIO_PULL_UP);
141 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_V3S)
142 sunxi_gpio_set_cfgpin(SUNXI_GPB(8), SUN8I_V3S_GPB_UART0);
143 sunxi_gpio_set_cfgpin(SUNXI_GPB(9), SUN8I_V3S_GPB_UART0);
144 sunxi_gpio_set_pull(SUNXI_GPB(9), SUNXI_GPIO_PULL_UP);
145 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN9I)
146 sunxi_gpio_set_cfgpin(SUNXI_GPH(12), SUN9I_GPH_UART0);
147 sunxi_gpio_set_cfgpin(SUNXI_GPH(13), SUN9I_GPH_UART0);
148 sunxi_gpio_set_pull(SUNXI_GPH(13), SUNXI_GPIO_PULL_UP);
149 #elif CONFIG_CONS_INDEX == 2 && defined(CONFIG_MACH_SUN5I)
150 sunxi_gpio_set_cfgpin(SUNXI_GPG(3), SUN5I_GPG_UART1);
151 sunxi_gpio_set_cfgpin(SUNXI_GPG(4), SUN5I_GPG_UART1);
152 sunxi_gpio_set_pull(SUNXI_GPG(4), SUNXI_GPIO_PULL_UP);
153 #elif CONFIG_CONS_INDEX == 3 && defined(CONFIG_MACH_SUN8I)
154 sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUN8I_GPB_UART2);
155 sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUN8I_GPB_UART2);
156 sunxi_gpio_set_pull(SUNXI_GPB(1), SUNXI_GPIO_PULL_UP);
157 #elif CONFIG_CONS_INDEX == 5 && defined(CONFIG_MACH_SUN8I)
158 sunxi_gpio_set_cfgpin(SUNXI_GPL(2), SUN8I_GPL_R_UART);
159 sunxi_gpio_set_cfgpin(SUNXI_GPL(3), SUN8I_GPL_R_UART);
160 sunxi_gpio_set_pull(SUNXI_GPL(3), SUNXI_GPIO_PULL_UP);
161 #elif CONFIG_CONS_INDEX == 2 && defined(CONFIG_MACH_SUN8I) && \
162 !defined(CONFIG_MACH_SUN8I_R40)
163 sunxi_gpio_set_cfgpin(SUNXI_GPG(6), SUN8I_GPG_UART1);
164 sunxi_gpio_set_cfgpin(SUNXI_GPG(7), SUN8I_GPG_UART1);
165 sunxi_gpio_set_pull(SUNXI_GPG(7), SUNXI_GPIO_PULL_UP);
167 #error Unsupported console port number. Please fix pin mux settings in board.c
170 #ifdef CONFIG_SUN50I_GEN_H6
171 /* Update PIO power bias configuration by copy hardware detected value */
172 val = readl(SUNXI_PIO_BASE + SUN50I_H6_GPIO_POW_MOD_VAL);
173 writel(val, SUNXI_PIO_BASE + SUN50I_H6_GPIO_POW_MOD_SEL);
174 val = readl(SUNXI_R_PIO_BASE + SUN50I_H6_GPIO_POW_MOD_VAL);
175 writel(val, SUNXI_R_PIO_BASE + SUN50I_H6_GPIO_POW_MOD_SEL);
181 static int spl_board_load_image(struct spl_image_info *spl_image,
182 struct spl_boot_device *bootdev)
184 debug("Returning to FEL sp=%x, lr=%x\n", fel_stash.sp, fel_stash.lr);
185 return_to_fel(fel_stash.sp, fel_stash.lr);
189 SPL_LOAD_IMAGE_METHOD("FEL", 0, BOOT_DEVICE_BOARD, spl_board_load_image);
192 #define SUNXI_INVALID_BOOT_SOURCE -1
194 static int suniv_get_boot_source(void)
196 /* Get the last function call from BootROM's stack. */
197 u32 brom_call = *(u32 *)(uintptr_t)(fel_stash.sp - 4);
199 /* translate SUNIV BootROM stack to standard SUNXI boot sources */
201 case SUNIV_BOOTED_FROM_MMC0:
202 return SUNXI_BOOTED_FROM_MMC0;
203 case SUNIV_BOOTED_FROM_SPI:
204 return SUNXI_BOOTED_FROM_SPI;
205 case SUNIV_BOOTED_FROM_MMC1:
206 return SUNXI_BOOTED_FROM_MMC2;
207 /* SPI NAND is not supported yet. */
208 case SUNIV_BOOTED_FROM_NAND:
209 return SUNXI_INVALID_BOOT_SOURCE;
211 /* If we get here something went wrong try to boot from FEL.*/
212 printf("Unknown boot source from BROM: 0x%x\n", brom_call);
213 return SUNXI_INVALID_BOOT_SOURCE;
216 static int sunxi_get_boot_source(void)
219 * On the ARMv5 SoCs, the SPL header in SRAM is overwritten by the
220 * exception vectors in U-Boot proper, so we won't find any
221 * information there. Also the FEL stash is only valid in the SPL,
222 * so we can't use that either. So if this is called from U-Boot
223 * proper, just return MMC0 as a placeholder, for now.
225 if (IS_ENABLED(CONFIG_MACH_SUNIV) &&
226 !IS_ENABLED(CONFIG_SPL_BUILD))
227 return SUNXI_BOOTED_FROM_MMC0;
229 if (!is_boot0_magic(SPL_ADDR + 4)) /* eGON.BT0 */
230 return SUNXI_INVALID_BOOT_SOURCE;
232 if (IS_ENABLED(CONFIG_MACH_SUNIV))
233 return suniv_get_boot_source();
235 return readb(SPL_ADDR + 0x28);
238 /* The sunxi internal brom will try to loader external bootloader
239 * from mmc0, nand flash, mmc2.
241 uint32_t sunxi_get_boot_device(void)
243 int boot_source = sunxi_get_boot_source();
246 * When booting from the SD card or NAND memory, the "eGON.BT0"
247 * signature is expected to be found in memory at the address 0x0004
248 * (see the "mksunxiboot" tool, which generates this header).
250 * When booting in the FEL mode over USB, this signature is patched in
251 * memory and replaced with something else by the 'fel' tool. This other
252 * signature is selected in such a way, that it can't be present in a
253 * valid bootable SD card image (because the BROM would refuse to
254 * execute the SPL in this case).
256 * This checks for the signature and if it is not found returns to
257 * the FEL code in the BROM to wait and receive the main u-boot
258 * binary over USB. If it is found, it determines where SPL was
261 switch (boot_source) {
262 case SUNXI_INVALID_BOOT_SOURCE:
263 return BOOT_DEVICE_BOARD;
264 case SUNXI_BOOTED_FROM_MMC0:
265 case SUNXI_BOOTED_FROM_MMC0_HIGH:
266 return BOOT_DEVICE_MMC1;
267 case SUNXI_BOOTED_FROM_NAND:
268 return BOOT_DEVICE_NAND;
269 case SUNXI_BOOTED_FROM_MMC2:
270 case SUNXI_BOOTED_FROM_MMC2_HIGH:
271 return BOOT_DEVICE_MMC2;
272 case SUNXI_BOOTED_FROM_SPI:
273 return BOOT_DEVICE_SPI;
276 panic("Unknown boot source %d\n", boot_source);
277 return -1; /* Never reached */
280 #ifdef CONFIG_SPL_BUILD
281 static u32 sunxi_get_spl_size(void)
283 if (!is_boot0_magic(SPL_ADDR + 4)) /* eGON.BT0 */
286 return readl(SPL_ADDR + 0x10);
290 * The eGON SPL image can be located at 8KB or at 128KB into an SD card or
291 * an eMMC device. The boot source has bit 4 set in the latter case.
292 * By adding 120KB to the normal offset when booting from a "high" location
293 * we can support both cases.
294 * Also U-Boot proper is located at least 32KB after the SPL, but will
295 * immediately follow the SPL if that is bigger than that.
297 unsigned long spl_mmc_get_uboot_raw_sector(struct mmc *mmc,
298 unsigned long raw_sect)
300 unsigned long spl_size = sunxi_get_spl_size();
301 unsigned long sector;
303 sector = max(raw_sect, spl_size / 512);
305 switch (sunxi_get_boot_source()) {
306 case SUNXI_BOOTED_FROM_MMC0_HIGH:
307 case SUNXI_BOOTED_FROM_MMC2_HIGH:
308 sector += (128 - 8) * 2;
315 u32 spl_boot_device(void)
317 return sunxi_get_boot_device();
320 __weak void sunxi_sram_init(void)
324 void board_init_f(ulong dummy)
328 #if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I_H3
329 /* Enable non-secure access to some peripherals */
339 preloader_console_init();
341 #if CONFIG_IS_ENABLED(I2C) && CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
342 /* Needed early by sunxi_board_init if PMU is enabled */
344 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
350 #if !CONFIG_IS_ENABLED(SYSRESET)
353 #if defined(CONFIG_SUNXI_GEN_SUN4I) || defined(CONFIG_MACH_SUN8I_R40)
354 static const struct sunxi_wdog *wdog =
355 &((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog;
357 /* Set the watchdog for its shortest interval (.5s) and wait */
358 writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode);
359 writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl);
362 /* sun5i sometimes gets stuck without this */
363 writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode);
365 #elif defined(CONFIG_SUNXI_GEN_SUN6I) || defined(CONFIG_SUN50I_GEN_H6)
366 #if defined(CONFIG_MACH_SUN50I_H6)
367 /* WDOG is broken for some H6 rev. use the R_WDOG instead */
368 static const struct sunxi_wdog *wdog =
369 (struct sunxi_wdog *)SUNXI_R_WDOG_BASE;
371 static const struct sunxi_wdog *wdog =
372 ((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog;
374 /* Set the watchdog for its shortest interval (.5s) and wait */
375 writel(WDT_CFG_RESET, &wdog->cfg);
376 writel(WDT_MODE_EN, &wdog->mode);
377 writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl);
383 #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) && !defined(CONFIG_ARM64)
384 void enable_caches(void)
386 /* Enable D-cache. I-cache is already enabled in start.S */