diff options
Diffstat (limited to 'roms/u-boot/arch/arm/mach-rockchip/rk3368/rk3368.c')
| -rw-r--r-- | roms/u-boot/arch/arm/mach-rockchip/rk3368/rk3368.c | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-rockchip/rk3368/rk3368.c b/roms/u-boot/arch/arm/mach-rockchip/rk3368/rk3368.c new file mode 100644 index 000000000..9b7132d47 --- /dev/null +++ b/roms/u-boot/arch/arm/mach-rockchip/rk3368/rk3368.c @@ -0,0 +1,241 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2016 Rockchip Electronics Co., Ltd + * Copyright (c) 2016 Andreas Färber + */ + +#include <common.h> +#include <init.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/cru_rk3368.h> +#include <asm/arch-rockchip/grf_rk3368.h> +#include <asm/arch-rockchip/hardware.h> +#include <linux/bitops.h> +#include <linux/delay.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define IMEM_BASE 0xFF8C0000 + +/* Max MCU's SRAM value is 8K, begin at (IMEM_BASE + 4K) */ +#define MCU_SRAM_BASE (IMEM_BASE + 1024 * 4) +#define MCU_SRAM_BASE_BIT31_BIT28 ((MCU_SRAM_BASE & GENMASK(31, 28)) >> 28) +#define MCU_SRAM_BASE_BIT27_BIT12 ((MCU_SRAM_BASE & GENMASK(27, 12)) >> 12) +/* exsram may using by mcu to accessing dram(0x0-0x20000000) */ +#define MCU_EXSRAM_BASE (0) +#define MCU_EXSRAM_BASE_BIT31_BIT28 ((MCU_EXSRAM_BASE & GENMASK(31, 28)) >> 28) +#define MCU_EXSRAM_BASE_BIT27_BIT12 ((MCU_EXSRAM_BASE & GENMASK(27, 12)) >> 12) +/* experi no used, reserved value = 0 */ +#define MCU_EXPERI_BASE (0) +#define MCU_EXPERI_BASE_BIT31_BIT28 ((MCU_EXPERI_BASE & GENMASK(31, 28)) >> 28) +#define MCU_EXPERI_BASE_BIT27_BIT12 ((MCU_EXPERI_BASE & GENMASK(27, 12)) >> 12) + +static struct mm_region rk3368_mem_map[] = { + { + .virt = 0x0UL, + .phys = 0x0UL, + .size = 0x80000000UL, + .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | + PTE_BLOCK_INNER_SHARE + }, { + .virt = 0xf0000000UL, + .phys = 0xf0000000UL, + .size = 0x10000000UL, + .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 = rk3368_mem_map; + +const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = { + [BROM_BOOTSOURCE_EMMC] = "/dwmmc@ff0f0000", + [BROM_BOOTSOURCE_SD] = "/dwmmc@ff0c0000", +}; + +#ifdef CONFIG_ARCH_EARLY_INIT_R +static int mcu_init(void) +{ + struct rk3368_grf *grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); + struct rk3368_cru *cru = rockchip_get_cru(); + + rk_clrsetreg(&grf->soc_con14, MCU_SRAM_BASE_BIT31_BIT28_MASK, + MCU_SRAM_BASE_BIT31_BIT28 << MCU_SRAM_BASE_BIT31_BIT28_SHIFT); + rk_clrsetreg(&grf->soc_con11, MCU_SRAM_BASE_BIT27_BIT12_MASK, + MCU_SRAM_BASE_BIT27_BIT12 << MCU_SRAM_BASE_BIT27_BIT12_SHIFT); + rk_clrsetreg(&grf->soc_con14, MCU_EXSRAM_BASE_BIT31_BIT28_MASK, + MCU_EXSRAM_BASE_BIT31_BIT28 << MCU_EXSRAM_BASE_BIT31_BIT28_SHIFT); + rk_clrsetreg(&grf->soc_con12, MCU_EXSRAM_BASE_BIT27_BIT12_MASK, + MCU_EXSRAM_BASE_BIT27_BIT12 << MCU_EXSRAM_BASE_BIT27_BIT12_SHIFT); + rk_clrsetreg(&grf->soc_con14, MCU_EXPERI_BASE_BIT31_BIT28_MASK, + MCU_EXPERI_BASE_BIT31_BIT28 << MCU_EXPERI_BASE_BIT31_BIT28_SHIFT); + rk_clrsetreg(&grf->soc_con13, MCU_EXPERI_BASE_BIT27_BIT12_MASK, + MCU_EXPERI_BASE_BIT27_BIT12 << MCU_EXPERI_BASE_BIT27_BIT12_SHIFT); + + rk_clrsetreg(&cru->clksel_con[12], MCU_PLL_SEL_MASK | MCU_CLK_DIV_MASK, + (MCU_PLL_SEL_GPLL << MCU_PLL_SEL_SHIFT) | + (5 << MCU_CLK_DIV_SHIFT)); + + /* mcu dereset, for start running */ + rk_clrreg(&cru->softrst_con[1], MCU_PO_SRST_MASK | MCU_SYS_SRST_MASK); + + return 0; +} + +int arch_early_init_r(void) +{ + return mcu_init(); +} +#endif + +#ifdef CONFIG_SPL_BUILD +/* + * The SPL (and also the full U-Boot stage on the RK3368) will run in + * secure mode (i.e. EL3) and an ATF will eventually be booted before + * starting up the operating system... so we can initialize the SGRF + * here and rely on the ATF installing the final (secure) policy + * later. + */ +static inline uintptr_t sgrf_soc_con_addr(unsigned int no) +{ + const uintptr_t SGRF_BASE = + (uintptr_t)syscon_get_first_range(ROCKCHIP_SYSCON_SGRF); + + return SGRF_BASE + sizeof(u32) * no; +} + +static inline uintptr_t sgrf_busdmac_addr(unsigned int no) +{ + const uintptr_t SGRF_BASE = + (uintptr_t)syscon_get_first_range(ROCKCHIP_SYSCON_SGRF); + const uintptr_t SGRF_BUSDMAC_OFFSET = 0x100; + const uintptr_t SGRF_BUSDMAC_BASE = SGRF_BASE + SGRF_BUSDMAC_OFFSET; + + return SGRF_BUSDMAC_BASE + sizeof(u32) * no; +} + +static void sgrf_init(void) +{ + struct rk3368_cru * const cru = + (struct rk3368_cru * const)rockchip_get_cru(); + const u16 SGRF_SOC_CON_SEC = GENMASK(15, 0); + const u16 SGRF_BUSDMAC_CON0_SEC = BIT(2); + const u16 SGRF_BUSDMAC_CON1_SEC = GENMASK(15, 12); + + /* Set all configurable IP to 'non secure'-mode */ + rk_setreg(sgrf_soc_con_addr(5), SGRF_SOC_CON_SEC); + rk_setreg(sgrf_soc_con_addr(6), SGRF_SOC_CON_SEC); + rk_setreg(sgrf_soc_con_addr(7), SGRF_SOC_CON_SEC); + + /* + * From rockchip-uboot/arch/arm/cpu/armv8/rk33xx/cpu.c + * Original comment: "ddr space set no secure mode" + */ + rk_clrreg(sgrf_soc_con_addr(8), SGRF_SOC_CON_SEC); + rk_clrreg(sgrf_soc_con_addr(9), SGRF_SOC_CON_SEC); + rk_clrreg(sgrf_soc_con_addr(10), SGRF_SOC_CON_SEC); + + /* Set 'secure dma' to 'non secure'-mode */ + rk_setreg(sgrf_busdmac_addr(0), SGRF_BUSDMAC_CON0_SEC); + rk_setreg(sgrf_busdmac_addr(1), SGRF_BUSDMAC_CON1_SEC); + + dsb(); /* barrier */ + + rk_setreg(&cru->softrst_con[1], DMA1_SRST_REQ); + rk_setreg(&cru->softrst_con[4], DMA2_SRST_REQ); + + dsb(); /* barrier */ + udelay(10); + + rk_clrreg(&cru->softrst_con[1], DMA1_SRST_REQ); + rk_clrreg(&cru->softrst_con[4], DMA2_SRST_REQ); +} + +int arch_cpu_init(void) +{ + /* Reset security, so we can use DMA in the MMC drivers */ + sgrf_init(); + + return 0; +} +#endif + +#ifdef CONFIG_DEBUG_UART_BOARD_INIT +void board_debug_uart_init(void) +{ + /* + * N.B.: This is called before the device-model has been + * initialised. For this reason, we can not access + * the GRF address range using the syscon API. + */ +#if defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff180000) + struct rk3368_grf * const grf = + (struct rk3368_grf * const)0xff770000; + + enum { + GPIO2D1_MASK = GENMASK(3, 2), + GPIO2D1_GPIO = 0, + GPIO2D1_UART0_SOUT = (1 << 2), + + GPIO2D0_MASK = GENMASK(1, 0), + GPIO2D0_GPIO = 0, + GPIO2D0_UART0_SIN = (1 << 0), + }; + + /* Enable early UART0 on the RK3368 */ + rk_clrsetreg(&grf->gpio2d_iomux, + GPIO2D0_MASK, GPIO2D0_UART0_SIN); + rk_clrsetreg(&grf->gpio2d_iomux, + GPIO2D1_MASK, GPIO2D1_UART0_SOUT); +#elif defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff1c0000) + struct rk3368_pmu_grf * const pmugrf __maybe_unused = + (struct rk3368_pmu_grf * const)0xff738000; + + enum { + /* UART4 */ + GPIO0D2_MASK = GENMASK(5, 4), + GPIO0D2_GPIO = 0, + GPIO0D2_UART4_SOUT = (3 << 4), + + GPIO0D3_MASK = GENMASK(7, 6), + GPIO0D3_GPIO = 0, + GPIO0D3_UART4_SIN = (3 << 6), + }; + + /* Enable early UART4 on the PX5 */ + rk_clrsetreg(&pmugrf->gpio0d_iomux, + GPIO0D2_MASK | GPIO0D3_MASK, + GPIO0D2_UART4_SOUT | GPIO0D3_UART4_SIN); +#elif defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff690000) + struct rk3368_grf * const grf = + (struct rk3368_grf * const)0xff770000; + + enum { + GPIO2A6_SHIFT = 12, + GPIO2A6_MASK = GENMASK(13, 12), + GPIO2A6_GPIO = 0, + GPIO2A6_UART2_SIN = (2 << GPIO2A6_SHIFT), + + GPIO2A5_SHIFT = 10, + GPIO2A5_MASK = GENMASK(11, 10), + GPIO2A5_GPIO = 0, + GPIO2A5_UART2_SOUT = (2 << GPIO2A5_SHIFT), + }; + + /* Enable early UART2 on the RK3368 */ + rk_clrsetreg(&grf->gpio2a_iomux, + GPIO2A6_MASK, GPIO2A6_UART2_SIN); + rk_clrsetreg(&grf->gpio2a_iomux, + GPIO2A5_MASK, GPIO2A5_UART2_SOUT); +#endif +} +#endif |