2 * (C) Copyright 2012 Henrik Nordstrom <henrik@henriknordstrom.net>
4 * (C) Copyright 2007-2011
5 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
6 * Tom Cubie <tangliang@allwinnertech.com>
8 * Some init for sunxi platform.
10 * SPDX-License-Identifier: GPL-2.0+
18 #ifdef CONFIG_SPL_BUILD
23 #include <asm/arch/clock.h>
24 #include <asm/arch/gpio.h>
25 #include <asm/arch/sys_proto.h>
26 #include <asm/arch/timer.h>
28 #include <linux/compiler.h>
39 struct fel_stash fel_stash __attribute__((section(".data")));
41 static int gpio_init(void)
43 #if CONFIG_CONS_INDEX == 1 && defined(CONFIG_UART0_PORT_F)
44 #if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I)
45 /* disable GPB22,23 as uart0 tx,rx to avoid conflict */
46 sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUNXI_GPIO_INPUT);
47 sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUNXI_GPIO_INPUT);
49 #if defined(CONFIG_MACH_SUN8I)
50 sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUN8I_GPF_UART0_TX);
51 sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUN8I_GPF_UART0_RX);
53 sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUNXI_GPF_UART0_TX);
54 sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUNXI_GPF_UART0_RX);
56 sunxi_gpio_set_pull(SUNXI_GPF(4), 1);
57 #elif CONFIG_CONS_INDEX == 1 && (defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I))
58 sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUN4I_GPB_UART0);
59 sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUN4I_GPB_UART0);
60 sunxi_gpio_set_pull(SUNXI_GPB(23), SUNXI_GPIO_PULL_UP);
61 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN5I)
62 sunxi_gpio_set_cfgpin(SUNXI_GPB(19), SUN5I_GPB_UART0);
63 sunxi_gpio_set_cfgpin(SUNXI_GPB(20), SUN5I_GPB_UART0);
64 sunxi_gpio_set_pull(SUNXI_GPB(20), SUNXI_GPIO_PULL_UP);
65 #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN6I)
66 sunxi_gpio_set_cfgpin(SUNXI_GPH(20), SUN6I_GPH_UART0);
67 sunxi_gpio_set_cfgpin(SUNXI_GPH(21), SUN6I_GPH_UART0);
68 sunxi_gpio_set_pull(SUNXI_GPH(21), SUNXI_GPIO_PULL_UP);
69 #elif CONFIG_CONS_INDEX == 2 && defined(CONFIG_MACH_SUN5I)
70 sunxi_gpio_set_cfgpin(SUNXI_GPG(3), SUN5I_GPG_UART1);
71 sunxi_gpio_set_cfgpin(SUNXI_GPG(4), SUN5I_GPG_UART1);
72 sunxi_gpio_set_pull(SUNXI_GPG(4), SUNXI_GPIO_PULL_UP);
73 #elif CONFIG_CONS_INDEX == 5 && defined(CONFIG_MACH_SUN8I)
74 sunxi_gpio_set_cfgpin(SUNXI_GPL(2), SUN8I_GPL_R_UART);
75 sunxi_gpio_set_cfgpin(SUNXI_GPL(3), SUN8I_GPL_R_UART);
76 sunxi_gpio_set_pull(SUNXI_GPL(3), SUNXI_GPIO_PULL_UP);
78 #error Unsupported console port number. Please fix pin mux settings in board.c
84 void spl_board_load_image(void)
86 debug("Returning to FEL sp=%x, lr=%x\n", fel_stash.sp, fel_stash.lr);
87 return_to_fel(fel_stash.sp, fel_stash.lr);
92 #if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
93 /* Magic (undocmented) value taken from boot0, without this DRAM
94 * access gets messed up (seems cache related) */
95 setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0x1800);
97 #if !defined CONFIG_SPL_BUILD && (defined CONFIG_MACH_SUN7I || \
98 defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I)
99 /* Enable SMP mode for CPU0, by setting bit 6 of Auxiliary Ctl reg */
101 "mrc p15, 0, r0, c1, c0, 1\n"
102 "orr r0, r0, #1 << 6\n"
103 "mcr p15, 0, r0, c1, c0, 1\n");
112 #ifdef CONFIG_SPL_BUILD
113 /* The sunxi internal brom will try to loader external bootloader
114 * from mmc0, nand flash, mmc2.
115 * Unfortunately we can't check how SPL was loaded so assume
116 * it's always the first SD/MMC controller
118 u32 spl_boot_device(void)
120 #ifdef CONFIG_SPL_FEL
122 * This is the legacy compile time configuration for a special FEL
123 * enabled build. It has many restrictions and can only boot over USB.
125 return BOOT_DEVICE_BOARD;
128 * When booting from the SD card, the "eGON.BT0" signature is expected
129 * to be found in memory at the address 0x0004 (see the "mksunxiboot"
130 * tool, which generates this header).
132 * When booting in the FEL mode over USB, this signature is patched in
133 * memory and replaced with something else by the 'fel' tool. This other
134 * signature is selected in such a way, that it can't be present in a
135 * valid bootable SD card image (because the BROM would refuse to
136 * execute the SPL in this case).
138 * This branch is just making a decision at runtime whether to load
139 * the main u-boot binary from the SD card (if the "eGON.BT0" signature
140 * is found) or return to the FEL code in the BROM to wait and receive
141 * the main u-boot binary over USB.
143 if (readl(4) == 0x4E4F4765 && readl(8) == 0x3054422E) /* eGON.BT0 */
144 return BOOT_DEVICE_MMC1;
146 return BOOT_DEVICE_BOARD;
150 /* No confirmation data available in SPL yet. Hardcode bootmode */
151 u32 spl_boot_mode(void)
153 return MMCSD_MODE_RAW;
156 void board_init_f(ulong dummy)
158 preloader_console_init();
160 #ifdef CONFIG_SPL_I2C_SUPPORT
161 /* Needed early by sunxi_board_init if PMU is enabled */
162 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
167 memset(__bss_start, 0, __bss_end - __bss_start);
169 board_init_r(NULL, 0);
173 void reset_cpu(ulong addr)
175 #if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN5I) || defined(CONFIG_MACH_SUN7I)
176 static const struct sunxi_wdog *wdog =
177 &((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog;
179 /* Set the watchdog for its shortest interval (.5s) and wait */
180 writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode);
181 writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl);
184 /* sun5i sometimes gets stuck without this */
185 writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode);
187 #else /* CONFIG_MACH_SUN6I || CONFIG_MACH_SUN8I || .. */
188 static const struct sunxi_wdog *wdog =
189 ((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog;
191 /* Set the watchdog for its shortest interval (.5s) and wait */
192 writel(WDT_CFG_RESET, &wdog->cfg);
193 writel(WDT_MODE_EN, &wdog->mode);
194 writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl);
198 #ifndef CONFIG_SYS_DCACHE_OFF
199 void enable_caches(void)
201 /* Enable D-cache. I-cache is already enabled in start.S */
206 #ifdef CONFIG_CMD_NET
208 * Initializes on-chip ethernet controllers.
209 * to override, implement board_eth_init()
211 int cpu_eth_init(bd_t *bis)
213 __maybe_unused int rc;
216 gpio_direction_output(CONFIG_MACPWR, 1);
220 #ifdef CONFIG_SUNXI_EMAC
221 rc = sunxi_emac_initialize(bis);
223 printf("sunxi: failed to initialize emac\n");
228 #ifdef CONFIG_SUNXI_GMAC
229 rc = sunxi_gmac_initialize(bis);
231 printf("sunxi: failed to initialize gmac\n");