| /* |
| * (C) Copyright 2012 Henrik Nordstrom <henrik@henriknordstrom.net> |
| * |
| * (C) Copyright 2007-2011 |
| * Allwinner Technology Co., Ltd. <www.allwinnertech.com> |
| * Tom Cubie <tangliang@allwinnertech.com> |
| * |
| * Some init for sunxi platform. |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #include <common.h> |
| #include <mmc.h> |
| #include <i2c.h> |
| #include <serial.h> |
| #ifdef CONFIG_SPL_BUILD |
| #include <spl.h> |
| #endif |
| #include <asm/gpio.h> |
| #include <asm/io.h> |
| #include <asm/arch/clock.h> |
| #include <asm/arch/gpio.h> |
| #include <asm/arch/spl.h> |
| #include <asm/arch/sys_proto.h> |
| #include <asm/arch/timer.h> |
| #include <asm/arch/tzpc.h> |
| #include <asm/arch/mmc.h> |
| |
| #include <linux/compiler.h> |
| |
| struct fel_stash { |
| uint32_t sp; |
| uint32_t lr; |
| uint32_t cpsr; |
| uint32_t sctlr; |
| uint32_t vbar; |
| uint32_t cr; |
| }; |
| |
| struct fel_stash fel_stash __attribute__((section(".data"))); |
| |
| static int gpio_init(void) |
| { |
| #if CONFIG_CONS_INDEX == 1 && defined(CONFIG_UART0_PORT_F) |
| #if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I) |
| /* disable GPB22,23 as uart0 tx,rx to avoid conflict */ |
| sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUNXI_GPIO_INPUT); |
| sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUNXI_GPIO_INPUT); |
| #endif |
| #if defined(CONFIG_MACH_SUN8I) |
| sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUN8I_GPF_UART0); |
| sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUN8I_GPF_UART0); |
| #else |
| sunxi_gpio_set_cfgpin(SUNXI_GPF(2), SUNXI_GPF_UART0); |
| sunxi_gpio_set_cfgpin(SUNXI_GPF(4), SUNXI_GPF_UART0); |
| #endif |
| sunxi_gpio_set_pull(SUNXI_GPF(4), 1); |
| #elif CONFIG_CONS_INDEX == 1 && (defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I)) |
| sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUN4I_GPB_UART0); |
| sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUN4I_GPB_UART0); |
| sunxi_gpio_set_pull(SUNXI_GPB(23), SUNXI_GPIO_PULL_UP); |
| #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN5I) |
| sunxi_gpio_set_cfgpin(SUNXI_GPB(19), SUN5I_GPB_UART0); |
| sunxi_gpio_set_cfgpin(SUNXI_GPB(20), SUN5I_GPB_UART0); |
| sunxi_gpio_set_pull(SUNXI_GPB(20), SUNXI_GPIO_PULL_UP); |
| #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN6I) |
| sunxi_gpio_set_cfgpin(SUNXI_GPH(20), SUN6I_GPH_UART0); |
| sunxi_gpio_set_cfgpin(SUNXI_GPH(21), SUN6I_GPH_UART0); |
| sunxi_gpio_set_pull(SUNXI_GPH(21), SUNXI_GPIO_PULL_UP); |
| #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN8I_A33) |
| sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUN8I_A33_GPB_UART0); |
| sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUN8I_A33_GPB_UART0); |
| sunxi_gpio_set_pull(SUNXI_GPB(1), SUNXI_GPIO_PULL_UP); |
| #elif CONFIG_CONS_INDEX == 1 && defined(CONFIG_MACH_SUN9I) |
| sunxi_gpio_set_cfgpin(SUNXI_GPH(12), SUN9I_GPH_UART0); |
| sunxi_gpio_set_cfgpin(SUNXI_GPH(13), SUN9I_GPH_UART0); |
| sunxi_gpio_set_pull(SUNXI_GPH(13), SUNXI_GPIO_PULL_UP); |
| #elif CONFIG_CONS_INDEX == 2 && defined(CONFIG_MACH_SUN5I) |
| sunxi_gpio_set_cfgpin(SUNXI_GPG(3), SUN5I_GPG_UART1); |
| sunxi_gpio_set_cfgpin(SUNXI_GPG(4), SUN5I_GPG_UART1); |
| sunxi_gpio_set_pull(SUNXI_GPG(4), SUNXI_GPIO_PULL_UP); |
| #elif CONFIG_CONS_INDEX == 3 && defined(CONFIG_MACH_SUN8I) |
| sunxi_gpio_set_cfgpin(SUNXI_GPB(0), SUN8I_GPB_UART2); |
| sunxi_gpio_set_cfgpin(SUNXI_GPB(1), SUN8I_GPB_UART2); |
| sunxi_gpio_set_pull(SUNXI_GPB(1), SUNXI_GPIO_PULL_UP); |
| #elif CONFIG_CONS_INDEX == 5 && defined(CONFIG_MACH_SUN8I) |
| sunxi_gpio_set_cfgpin(SUNXI_GPL(2), SUN8I_GPL_R_UART); |
| sunxi_gpio_set_cfgpin(SUNXI_GPL(3), SUN8I_GPL_R_UART); |
| sunxi_gpio_set_pull(SUNXI_GPL(3), SUNXI_GPIO_PULL_UP); |
| #else |
| #error Unsupported console port number. Please fix pin mux settings in board.c |
| #endif |
| |
| return 0; |
| } |
| |
| int spl_board_load_image(void) |
| { |
| debug("Returning to FEL sp=%x, lr=%x\n", fel_stash.sp, fel_stash.lr); |
| return_to_fel(fel_stash.sp, fel_stash.lr); |
| |
| return 0; |
| } |
| |
| void s_init(void) |
| { |
| #if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I_A23 |
| /* Magic (undocmented) value taken from boot0, without this DRAM |
| * access gets messed up (seems cache related) */ |
| setbits_le32(SUNXI_SRAMC_BASE + 0x44, 0x1800); |
| #endif |
| #if defined CONFIG_MACH_SUN6I || \ |
| defined CONFIG_MACH_SUN7I || \ |
| defined CONFIG_MACH_SUN8I |
| /* Enable SMP mode for CPU0, by setting bit 6 of Auxiliary Ctl reg */ |
| asm volatile( |
| "mrc p15, 0, r0, c1, c0, 1\n" |
| "orr r0, r0, #1 << 6\n" |
| "mcr p15, 0, r0, c1, c0, 1\n"); |
| #endif |
| #if defined CONFIG_MACH_SUN6I |
| /* Enable non-secure access to the RTC */ |
| tzpc_init(); |
| #endif |
| |
| clock_init(); |
| timer_init(); |
| gpio_init(); |
| i2c_init_board(); |
| } |
| |
| #ifdef CONFIG_SPL_BUILD |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| /* The sunxi internal brom will try to loader external bootloader |
| * from mmc0, nand flash, mmc2. |
| */ |
| u32 spl_boot_device(void) |
| { |
| __maybe_unused struct mmc *mmc0, *mmc1; |
| /* |
| * When booting from the SD card or NAND memory, the "eGON.BT0" |
| * signature is expected to be found in memory at the address 0x0004 |
| * (see the "mksunxiboot" tool, which generates this header). |
| * |
| * When booting in the FEL mode over USB, this signature is patched in |
| * memory and replaced with something else by the 'fel' tool. This other |
| * signature is selected in such a way, that it can't be present in a |
| * valid bootable SD card image (because the BROM would refuse to |
| * execute the SPL in this case). |
| * |
| * This checks for the signature and if it is not found returns to |
| * the FEL code in the BROM to wait and receive the main u-boot |
| * binary over USB. If it is found, it determines where SPL was |
| * read from. |
| */ |
| if (!is_boot0_magic(SPL_ADDR + 4)) /* eGON.BT0 */ |
| return BOOT_DEVICE_BOARD; |
| |
| /* The BROM will try to boot from mmc0 first, so try that first. */ |
| #ifdef CONFIG_MMC |
| mmc_initialize(gd->bd); |
| mmc0 = find_mmc_device(0); |
| if (sunxi_mmc_has_egon_boot_signature(mmc0)) |
| return BOOT_DEVICE_MMC1; |
| #endif |
| |
| /* Fallback to booting NAND if enabled. */ |
| if (IS_ENABLED(CONFIG_SPL_NAND_SUPPORT)) |
| return BOOT_DEVICE_NAND; |
| |
| #ifdef CONFIG_MMC |
| if (CONFIG_MMC_SUNXI_SLOT_EXTRA == 2) { |
| mmc1 = find_mmc_device(1); |
| if (sunxi_mmc_has_egon_boot_signature(mmc1)) { |
| /* |
| * spl_mmc.c: spl_mmc_load_image() is hard-coded to |
| * use find_mmc_device(0), no matter what we |
| * return. Swap mmc0 and mmc2 to make this work. |
| */ |
| mmc0->block_dev.dev = 1; |
| mmc1->block_dev.dev = 0; |
| return BOOT_DEVICE_MMC2; |
| } |
| } |
| #endif |
| |
| panic("Could not determine boot source\n"); |
| return -1; /* Never reached */ |
| } |
| |
| /* No confirmation data available in SPL yet. Hardcode bootmode */ |
| u32 spl_boot_mode(void) |
| { |
| return MMCSD_MODE_RAW; |
| } |
| |
| void board_init_f(ulong dummy) |
| { |
| spl_init(); |
| preloader_console_init(); |
| |
| #ifdef CONFIG_SPL_I2C_SUPPORT |
| /* Needed early by sunxi_board_init if PMU is enabled */ |
| i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); |
| #endif |
| sunxi_board_init(); |
| } |
| #endif |
| |
| void reset_cpu(ulong addr) |
| { |
| #ifdef CONFIG_SUNXI_GEN_SUN4I |
| static const struct sunxi_wdog *wdog = |
| &((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog; |
| |
| /* Set the watchdog for its shortest interval (.5s) and wait */ |
| writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode); |
| writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl); |
| |
| while (1) { |
| /* sun5i sometimes gets stuck without this */ |
| writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode); |
| } |
| #endif |
| #ifdef CONFIG_SUNXI_GEN_SUN6I |
| static const struct sunxi_wdog *wdog = |
| ((struct sunxi_timer_reg *)SUNXI_TIMER_BASE)->wdog; |
| |
| /* Set the watchdog for its shortest interval (.5s) and wait */ |
| writel(WDT_CFG_RESET, &wdog->cfg); |
| writel(WDT_MODE_EN, &wdog->mode); |
| writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl); |
| while (1) { } |
| #endif |
| } |
| |
| #ifndef CONFIG_SYS_DCACHE_OFF |
| void enable_caches(void) |
| { |
| /* Enable D-cache. I-cache is already enabled in start.S */ |
| dcache_enable(); |
| } |
| #endif |
| |
| #ifdef CONFIG_CMD_NET |
| /* |
| * Initializes on-chip ethernet controllers. |
| * to override, implement board_eth_init() |
| */ |
| int cpu_eth_init(bd_t *bis) |
| { |
| __maybe_unused int rc; |
| |
| #ifdef CONFIG_MACPWR |
| gpio_request(CONFIG_MACPWR, "macpwr"); |
| gpio_direction_output(CONFIG_MACPWR, 1); |
| mdelay(200); |
| #endif |
| |
| #ifdef CONFIG_SUNXI_GMAC |
| rc = sunxi_gmac_initialize(bis); |
| if (rc < 0) { |
| printf("sunxi: failed to initialize gmac\n"); |
| return rc; |
| } |
| #endif |
| |
| return 0; |
| } |
| #endif |