1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2012 Henrik Nordstrom <henrik@henriknordstrom.net>
5 * (C) Copyright 2007-2011
6 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
7 * Tom Cubie <tangliang@allwinnertech.com>
9 * Some init for sunxi platform.
18 #include <asm/cache.h>
21 #include <asm/arch/clock.h>
22 #include <asm/arch/gpio.h>
23 #include <asm/arch/spl.h>
24 #include <asm/arch/sys_proto.h>
25 #include <asm/arch/timer.h>
26 #include <asm/arch/tzpc.h>
27 #include <asm/arch/mmc.h>
29 #include <linux/compiler.h>
40 struct fel_stash fel_stash __attribute__((section(".data")));
43 #include <asm/armv8/mmu.h>
45 static struct mm_region sunxi_mem_map[] = {
47 /* SRAM, MMIO regions */
51 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
58 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
65 struct mm_region *mem_map = sunxi_mem_map;
68 static int gpio_init(void)
70 __maybe_unused uint val;
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);
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);
83 sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUNXI_GPF_UART0);
84 sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUNXI_GPF_UART0);
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_SUN50I_H6)
114 sunxi_gpio_set_cfgpin(SUNXI_GPH(0), SUN50I_H6_GPH_UART0);
115 sunxi_gpio_set_cfgpin(SUNXI_GPH(1), SUN50I_H6_GPH_UART0);
116 sunxi_gpio_set_pull(SUNXI_GPH(1), SUNXI_GPIO_PULL_UP);
117 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_A83T)
118 sunxi_gpio_set_cfgpin(SUNXI_GPB(9), SUN8I_A83T_GPB_UART0);
119 sunxi_gpio_set_cfgpin(SUNXI_GPB(10), SUN8I_A83T_GPB_UART0);
120 sunxi_gpio_set_pull(SUNXI_GPB(10), SUNXI_GPIO_PULL_UP);
121 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_V3S)
122 sunxi_gpio_set_cfgpin(SUNXI_GPB(8), SUN8I_V3S_GPB_UART0);
123 sunxi_gpio_set_cfgpin(SUNXI_GPB(9), SUN8I_V3S_GPB_UART0);
124 sunxi_gpio_set_pull(SUNXI_GPB(9), SUNXI_GPIO_PULL_UP);
125 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN9I)
126 sunxi_gpio_set_cfgpin(SUNXI_GPH(12), SUN9I_GPH_UART0);
127 sunxi_gpio_set_cfgpin(SUNXI_GPH(13), SUN9I_GPH_UART0);
128 sunxi_gpio_set_pull(SUNXI_GPH(13), SUNXI_GPIO_PULL_UP);
129 #elif CONFIG_CONS_INDEX == 2 && defined(CONFIG_MACH_SUN5I)
130 sunxi_gpio_set_cfgpin(SUNXI_GPG(3), SUN5I_GPG_UART1);
131 sunxi_gpio_set_cfgpin(SUNXI_GPG(4), SUN5I_GPG_UART1);
132 sunxi_gpio_set_pull(SUNXI_GPG(4), SUNXI_GPIO_PULL_UP);
133 #elif CONFIG_CONS_INDEX == 3 && defined(CONFIG_MACH_SUN8I)
134 sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUN8I_GPB_UART2);
135 sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUN8I_GPB_UART2);
136 sunxi_gpio_set_pull(SUNXI_GPB(1), SUNXI_GPIO_PULL_UP);
137 #elif CONFIG_CONS_INDEX == 5 && defined(CONFIG_MACH_SUN8I)
138 sunxi_gpio_set_cfgpin(SUNXI_GPL(2), SUN8I_GPL_R_UART);
139 sunxi_gpio_set_cfgpin(SUNXI_GPL(3), SUN8I_GPL_R_UART);
140 sunxi_gpio_set_pull(SUNXI_GPL(3), SUNXI_GPIO_PULL_UP);
142 #error Unsupported console port number. Please fix pin mux settings in board.c
145 #ifdef CONFIG_MACH_SUN50I_H6
146 /* Update PIO power bias configuration by copy hardware detected value */
147 val = readl(SUNXI_PIO_BASE + SUN50I_H6_GPIO_POW_MOD_VAL);
148 writel(val, SUNXI_PIO_BASE + SUN50I_H6_GPIO_POW_MOD_SEL);
149 val = readl(SUNXI_R_PIO_BASE + SUN50I_H6_GPIO_POW_MOD_VAL);
150 writel(val, SUNXI_R_PIO_BASE + SUN50I_H6_GPIO_POW_MOD_SEL);
156 #if defined(CONFIG_SPL_BOARD_LOAD_IMAGE) && defined(CONFIG_SPL_BUILD)
157 static int spl_board_load_image(struct spl_image_info *spl_image,
158 struct spl_boot_device *bootdev)
160 debug("Returning to FEL sp=%x, lr=%x\n", fel_stash.sp, fel_stash.lr);
161 return_to_fel(fel_stash.sp, fel_stash.lr);
165 SPL_LOAD_IMAGE_METHOD("FEL", 0, BOOT_DEVICE_BOARD, spl_board_load_image);
171 * Undocumented magic taken from boot0, without this DRAM
172 * access gets messed up (seems cache related).
173 * The boot0 sources describe this as: "config ema for cache sram"
175 #if defined CONFIG_MACH_SUN6I
176 setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0x1800);
177 #elif defined CONFIG_MACH_SUN8I
178 __maybe_unused uint version;
180 /* Unlock sram version info reg, read it, relock */
181 setbits_le32(SUNXI_SRAMC_BASE + 0x24, (1 << 15));
182 version = readl(SUNXI_SRAMC_BASE + 0x24) >> 16;
183 clrbits_le32(SUNXI_SRAMC_BASE + 0x24, (1 << 15));
186 * Ideally this would be a switch case, but we do not know exactly
187 * which versions there are and which version needs which settings,
188 * so reproduce the per SoC code from the BSP.
190 #if defined CONFIG_MACH_SUN8I_A23
191 if (version == 0x1650)
192 setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0x1800);
194 setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0xc0);
195 #elif defined CONFIG_MACH_SUN8I_A33
196 if (version != 0x1667)
197 setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0xc0);
199 /* A83T BSP never modifies SUNXI_SRAMC_BASE + 0x44 */
200 /* No H3 BSP, boot0 seems to not modify SUNXI_SRAMC_BASE + 0x44 */
203 #if !defined(CONFIG_ARM_CORTEX_CPU_IS_UP) && !defined(CONFIG_ARM64)
204 /* Enable SMP mode for CPU0, by setting bit 6 of Auxiliary Ctl reg */
206 "mrc p15, 0, r0, c1, c0, 1\n"
207 "orr r0, r0, #1 << 6\n"
208 "mcr p15, 0, r0, c1, c0, 1\n"
211 #if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I_H3
212 /* Enable non-secure access to some peripherals */
219 #ifndef CONFIG_DM_I2C
225 #define SUNXI_INVALID_BOOT_SOURCE -1
227 static int sunxi_get_boot_source(void)
229 if (!is_boot0_magic(SPL_ADDR + 4)) /* eGON.BT0 */
230 return SUNXI_INVALID_BOOT_SOURCE;
232 return readb(SPL_ADDR + 0x28);
235 /* The sunxi internal brom will try to loader external bootloader
236 * from mmc0, nand flash, mmc2.
238 uint32_t sunxi_get_boot_device(void)
240 int boot_source = sunxi_get_boot_source();
243 * When booting from the SD card or NAND memory, the "eGON.BT0"
244 * signature is expected to be found in memory at the address 0x0004
245 * (see the "mksunxiboot" tool, which generates this header).
247 * When booting in the FEL mode over USB, this signature is patched in
248 * memory and replaced with something else by the 'fel' tool. This other
249 * signature is selected in such a way, that it can't be present in a
250 * valid bootable SD card image (because the BROM would refuse to
251 * execute the SPL in this case).
253 * This checks for the signature and if it is not found returns to
254 * the FEL code in the BROM to wait and receive the main u-boot
255 * binary over USB. If it is found, it determines where SPL was
258 switch (boot_source) {
259 case SUNXI_INVALID_BOOT_SOURCE:
260 return BOOT_DEVICE_BOARD;
261 case SUNXI_BOOTED_FROM_MMC0:
262 case SUNXI_BOOTED_FROM_MMC0_HIGH:
263 return BOOT_DEVICE_MMC1;
264 case SUNXI_BOOTED_FROM_NAND:
265 return BOOT_DEVICE_NAND;
266 case SUNXI_BOOTED_FROM_MMC2:
267 case SUNXI_BOOTED_FROM_MMC2_HIGH:
268 return BOOT_DEVICE_MMC2;
269 case SUNXI_BOOTED_FROM_SPI:
270 return BOOT_DEVICE_SPI;
273 panic("Unknown boot source %d\n", boot_source);
274 return -1; /* Never reached */
277 #ifdef CONFIG_SPL_BUILD
279 * The eGON SPL image can be located at 8KB or at 128KB into an SD card or
280 * an eMMC device. The boot source has bit 4 set in the latter case.
281 * By adding 120KB to the normal offset when booting from a "high" location
282 * we can support both cases.
284 unsigned long spl_mmc_get_uboot_raw_sector(struct mmc *mmc)
286 unsigned long sector = CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR;
288 switch (sunxi_get_boot_source()) {
289 case SUNXI_BOOTED_FROM_MMC0_HIGH:
290 case SUNXI_BOOTED_FROM_MMC2_HIGH:
291 sector += (128 - 8) * 2;
298 u32 spl_boot_device(void)
300 return sunxi_get_boot_device();
303 void board_init_f(ulong dummy)
306 preloader_console_init();
308 #ifdef CONFIG_SPL_I2C_SUPPORT
309 /* Needed early by sunxi_board_init if PMU is enabled */
310 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
316 void reset_cpu(ulong addr)
318 #if defined(CONFIG_SUNXI_GEN_SUN4I) || defined(CONFIG_MACH_SUN8I_R40)
319 static const struct sunxi_wdog *wdog =
320 &((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog;
322 /* Set the watchdog for its shortest interval (.5s) and wait */
323 writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode);
324 writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl);
327 /* sun5i sometimes gets stuck without this */
328 writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode);
330 #elif defined(CONFIG_SUNXI_GEN_SUN6I) || defined(CONFIG_MACH_SUN50I_H6)
331 #if defined(CONFIG_MACH_SUN50I_H6)
332 /* WDOG is broken for some H6 rev. use the R_WDOG instead */
333 static const struct sunxi_wdog *wdog =
334 (struct sunxi_wdog *)SUNXI_R_WDOG_BASE;
336 static const struct sunxi_wdog *wdog =
337 ((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog;
339 /* Set the watchdog for its shortest interval (.5s) and wait */
340 writel(WDT_CFG_RESET, &wdog->cfg);
341 writel(WDT_MODE_EN, &wdog->mode);
342 writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl);
347 #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) && !defined(CONFIG_ARM64)
348 void enable_caches(void)
350 /* Enable D-cache. I-cache is already enabled in start.S */