diff options
Diffstat (limited to 'roms/u-boot/arch/arm/mach-rockchip/rk3399/rk3399.c')
| -rw-r--r-- | roms/u-boot/arch/arm/mach-rockchip/rk3399/rk3399.c | 284 |
1 files changed, 284 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-rockchip/rk3399/rk3399.c b/roms/u-boot/arch/arm/mach-rockchip/rk3399/rk3399.c new file mode 100644 index 000000000..869d2159b --- /dev/null +++ b/roms/u-boot/arch/arm/mach-rockchip/rk3399/rk3399.c @@ -0,0 +1,284 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2016 Rockchip Electronics Co., Ltd + */ + +#include <common.h> +#include <fdt_support.h> +#include <init.h> +#include <log.h> +#include <spl.h> +#include <spl_gpio.h> +#include <syscon.h> +#include <asm/armv8/mmu.h> +#include <asm/global_data.h> +#include <asm/io.h> +#include <asm/arch-rockchip/bootrom.h> +#include <asm/arch-rockchip/clock.h> +#include <asm/arch-rockchip/gpio.h> +#include <asm/arch-rockchip/grf_rk3399.h> +#include <asm/arch-rockchip/hardware.h> +#include <linux/bitops.h> +#include <power/regulator.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define GRF_EMMCCORE_CON11 0xff77f02c +#define GRF_BASE 0xff770000 + +const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = { + [BROM_BOOTSOURCE_EMMC] = "/sdhci@fe330000", + [BROM_BOOTSOURCE_SPINOR] = "/spi@ff1d0000", + [BROM_BOOTSOURCE_SD] = "/mmc@fe320000", +}; + +static struct mm_region rk3399_mem_map[] = { + { + .virt = 0x0UL, + .phys = 0x0UL, + .size = 0xf8000000UL, + .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | + PTE_BLOCK_INNER_SHARE + }, { + .virt = 0xf8000000UL, + .phys = 0xf8000000UL, + .size = 0x08000000UL, + .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) | + PTE_BLOCK_NON_SHARE | + PTE_BLOCK_PXN | PTE_BLOCK_UXN + }, { + /* List terminator */ + 0, + } +}; + +struct mm_region *mem_map = rk3399_mem_map; + +#ifdef CONFIG_SPL_BUILD + +#define TIMER_END_COUNT_L 0x00 +#define TIMER_END_COUNT_H 0x04 +#define TIMER_INIT_COUNT_L 0x10 +#define TIMER_INIT_COUNT_H 0x14 +#define TIMER_CONTROL_REG 0x1c + +#define TIMER_EN 0x1 +#define TIMER_FMODE BIT(0) +#define TIMER_RMODE BIT(1) + +void rockchip_stimer_init(void) +{ + /* If Timer already enabled, don't re-init it */ + u32 reg = readl(CONFIG_ROCKCHIP_STIMER_BASE + TIMER_CONTROL_REG); + + if (reg & TIMER_EN) + return; + + writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_END_COUNT_L); + writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_END_COUNT_H); + writel(0, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_INIT_COUNT_L); + writel(0, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_INIT_COUNT_H); + writel(TIMER_EN | TIMER_FMODE, CONFIG_ROCKCHIP_STIMER_BASE + \ + TIMER_CONTROL_REG); +} +#endif + +int arch_cpu_init(void) +{ + +#ifdef CONFIG_SPL_BUILD + struct rk3399_pmusgrf_regs *sgrf; + struct rk3399_grf_regs *grf; + + /* + * Disable DDR and SRAM security regions. + * + * As we are entered from the BootROM, the region from + * 0x0 through 0xfffff (i.e. the first MB of memory) will + * be protected. This will cause issues with the DW_MMC + * driver, which tries to DMA from/to the stack (likely) + * located in this range. + */ + sgrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUSGRF); + rk_clrsetreg(&sgrf->ddr_rgn_con[16], 0x1ff, 0); + rk_clrreg(&sgrf->slv_secure_con4, 0x2000); + + /* eMMC clock generator: disable the clock multipilier */ + grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); + rk_clrreg(&grf->emmccore_con[11], 0x0ff); +#endif + + return 0; +} + +#ifdef CONFIG_DEBUG_UART_BOARD_INIT +void board_debug_uart_init(void) +{ +#define GRF_BASE 0xff770000 +#define GPIO0_BASE 0xff720000 +#define PMUGRF_BASE 0xff320000 + struct rk3399_grf_regs * const grf = (void *)GRF_BASE; +#ifdef CONFIG_TARGET_CHROMEBOOK_BOB + struct rk3399_pmugrf_regs * const pmugrf = (void *)PMUGRF_BASE; + struct rockchip_gpio_regs * const gpio = (void *)GPIO0_BASE; +#endif + +#if defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff180000) + /* Enable early UART0 on the RK3399 */ + rk_clrsetreg(&grf->gpio2c_iomux, + GRF_GPIO2C0_SEL_MASK, + GRF_UART0BT_SIN << GRF_GPIO2C0_SEL_SHIFT); + rk_clrsetreg(&grf->gpio2c_iomux, + GRF_GPIO2C1_SEL_MASK, + GRF_UART0BT_SOUT << GRF_GPIO2C1_SEL_SHIFT); +#elif defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff1B0000) + /* Enable early UART3 on the RK3399 */ + rk_clrsetreg(&grf->gpio3b_iomux, + GRF_GPIO3B6_SEL_MASK, + GRF_UART3_SIN << GRF_GPIO3B6_SEL_SHIFT); + rk_clrsetreg(&grf->gpio3b_iomux, + GRF_GPIO3B7_SEL_MASK, + GRF_UART3_SOUT << GRF_GPIO3B7_SEL_SHIFT); +#else +# ifdef CONFIG_TARGET_CHROMEBOOK_BOB + rk_setreg(&grf->io_vsel, 1 << 0); + + /* + * Let's enable these power rails here, we are already running the SPI + * Flash based code. + */ + spl_gpio_output(gpio, GPIO(BANK_B, 2), 1); /* PP1500_EN */ + spl_gpio_set_pull(&pmugrf->gpio0_p, GPIO(BANK_B, 2), GPIO_PULL_NORMAL); + + spl_gpio_output(gpio, GPIO(BANK_B, 4), 1); /* PP3000_EN */ + spl_gpio_set_pull(&pmugrf->gpio0_p, GPIO(BANK_B, 4), GPIO_PULL_NORMAL); +#endif /* CONFIG_TARGET_CHROMEBOOK_BOB */ + + /* Enable early UART2 channel C on the RK3399 */ + rk_clrsetreg(&grf->gpio4c_iomux, + GRF_GPIO4C3_SEL_MASK, + GRF_UART2DGBC_SIN << GRF_GPIO4C3_SEL_SHIFT); + rk_clrsetreg(&grf->gpio4c_iomux, + GRF_GPIO4C4_SEL_MASK, + GRF_UART2DBGC_SOUT << GRF_GPIO4C4_SEL_SHIFT); + /* Set channel C as UART2 input */ + rk_clrsetreg(&grf->soc_con7, + GRF_UART_DBG_SEL_MASK, + GRF_UART_DBG_SEL_C << GRF_UART_DBG_SEL_SHIFT); +#endif +} +#endif + +#if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) +const char *spl_decode_boot_device(u32 boot_device) +{ + int i; + static const struct { + u32 boot_device; + const char *ofpath; + } spl_boot_devices_tbl[] = { + { BOOT_DEVICE_MMC1, "/mmc@fe320000" }, + { BOOT_DEVICE_MMC2, "/sdhci@fe330000" }, + { BOOT_DEVICE_SPI, "/spi@ff1d0000" }, + }; + + for (i = 0; i < ARRAY_SIZE(spl_boot_devices_tbl); ++i) + if (spl_boot_devices_tbl[i].boot_device == boot_device) + return spl_boot_devices_tbl[i].ofpath; + + return NULL; +} + +void spl_perform_fixups(struct spl_image_info *spl_image) +{ + void *blob = spl_image->fdt_addr; + const char *boot_ofpath; + int chosen; + + /* + * Inject the ofpath of the device the full U-Boot (or Linux in + * Falcon-mode) was booted from into the FDT, if a FDT has been + * loaded at the same time. + */ + if (!blob) + return; + + boot_ofpath = spl_decode_boot_device(spl_image->boot_device); + if (!boot_ofpath) { + pr_err("%s: could not map boot_device to ofpath\n", __func__); + return; + } + + chosen = fdt_find_or_add_subnode(blob, 0, "chosen"); + if (chosen < 0) { + pr_err("%s: could not find/create '/chosen'\n", __func__); + return; + } + fdt_setprop_string(blob, chosen, + "u-boot,spl-boot-device", boot_ofpath); +} + +#if defined(SPL_GPIO_SUPPORT) +static void rk3399_force_power_on_reset(void) +{ + ofnode node; + struct gpio_desc sysreset_gpio; + + debug("%s: trying to force a power-on reset\n", __func__); + + node = ofnode_path("/config"); + if (!ofnode_valid(node)) { + debug("%s: no /config node?\n", __func__); + return; + } + + if (gpio_request_by_name_nodev(node, "sysreset-gpio", 0, + &sysreset_gpio, GPIOD_IS_OUT)) { + debug("%s: could not find a /config/sysreset-gpio\n", __func__); + return; + } + + dm_gpio_set_value(&sysreset_gpio, 1); +} +#endif + +void __weak led_setup(void) +{ +} + +void spl_board_init(void) +{ + led_setup(); + +#if defined(SPL_GPIO_SUPPORT) + struct rockchip_cru *cru = rockchip_get_cru(); + + /* + * The RK3399 resets only 'almost all logic' (see also in the TRM + * "3.9.4 Global software reset"), when issuing a software reset. + * This may cause issues during boot-up for some configurations of + * the application software stack. + * + * To work around this, we test whether the last reset reason was + * a power-on reset and (if not) issue an overtemp-reset to reset + * the entire module. + * + * While this was previously fixed by modifying the various places + * that could generate a software reset (e.g. U-Boot's sysreset + * driver, the ATF or Linux), we now have it here to ensure that + * we no longer have to track this through the various components. + */ + if (cru->glb_rst_st != 0) + rk3399_force_power_on_reset(); +#endif + +#if defined(SPL_DM_REGULATOR) + /* + * Turning the eMMC and SPI back on (if disabled via the Qseven + * BIOS_ENABLE) signal is done through a always-on regulator). + */ + if (regulators_enable_boot_on(false)) + debug("%s: Cannot enable boot on regulator\n", __func__); +#endif +} +#endif |