This adds the TPL support for the RK3368, including the u-boot-tpl.lds.
Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com ---
arch/arm/mach-rockchip/Makefile | 1 + arch/arm/mach-rockchip/rk3368-board-tpl.c | 158 +++++++++++++++++++++++++++ arch/arm/mach-rockchip/rk3368/u-boot-tpl.lds | 13 +++ 3 files changed, 172 insertions(+) create mode 100644 arch/arm/mach-rockchip/rk3368-board-tpl.c create mode 100644 arch/arm/mach-rockchip/rk3368/u-boot-tpl.lds
diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile index 633c91e..960f40f 100644 --- a/arch/arm/mach-rockchip/Makefile +++ b/arch/arm/mach-rockchip/Makefile @@ -12,6 +12,7 @@ obj-spl-$(CONFIG_ROCKCHIP_BROM_HELPER) += bootrom.o save_boot_param.o obj-tpl-$(CONFIG_ROCKCHIP_BROM_HELPER) += bootrom.o save_boot_param.o
obj-tpl-$(CONFIG_ROCKCHIP_RK3188) += rk3188-board-tpl.o +obj-tpl-$(CONFIG_ROCKCHIP_RK3368) += rk3368-board-tpl.o
obj-spl-$(CONFIG_ROCKCHIP_RK3036) += rk3036-board-spl.o obj-spl-$(CONFIG_ROCKCHIP_RK3188) += rk3188-board-spl.o diff --git a/arch/arm/mach-rockchip/rk3368-board-tpl.c b/arch/arm/mach-rockchip/rk3368-board-tpl.c new file mode 100644 index 0000000..376b478 --- /dev/null +++ b/arch/arm/mach-rockchip/rk3368-board-tpl.c @@ -0,0 +1,158 @@ +/* + * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#define DEBUG + +#include <common.h> +#include <debug_uart.h> +#include <dm.h> +#include <ram.h> +#include <spl.h> +#include <asm/io.h> +#include <asm/arch/bootrom.h> +#include <asm/arch/cru_rk3368.h> +#include <asm/arch/grf_rk3368.h> +#include <asm/arch/hardware.h> +#include <asm/arch/timer.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* + * The ARMv8 generic timer uses the STIMER1 as its clock-source. + * Set up the STIMER1 to free-running (i.e. auto-reload) to start + * the generic timer counting (if we don't do this, udelay will not + * work and block indefinitively). + */ +static void secure_timer_init(void) +{ + struct rk_timer * const stimer1 = + (struct rk_timer * const)0xff830020; + const u32 TIMER_EN = BIT(0); + + writel(~0u, &stimer1->timer_load_count0); + writel(~0u, &stimer1->timer_load_count1); + writel(TIMER_EN, &stimer1->timer_ctrl_reg); +} + +/* + * 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 no) +{ + const uintptr_t SGRF_BASE = 0xff740000; + + return SGRF_BASE + sizeof(u32) * no; +} + +static inline uintptr_t sgrf_busdmac_addr(unsigned no) +{ + const uintptr_t SGRF_BUSDMAC_BASE = 0xff740100; + + return SGRF_BUSDMAC_BASE + sizeof(u32) * no; +} + +static void sgrf_init(void) +{ + struct rk3368_cru * const cru = + (struct rk3368_cru * const)0xff760000; + 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); +} + +void board_debug_uart_init(void) +{ + struct rk3368_grf * const grf = + (struct rk3368_grf * const)0xff770000; + +#if defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff180000) + /* Enable early UART0 on the RK3368 */ + rk_clrsetreg(&grf->gpio2d_iomux, + RK3368_GPIO2D0_MASK, RK3368_GPIO2D0_UART0_SIN); + rk_clrsetreg(&grf->gpio2d_iomux, + RK3368_GPIO2D1_MASK, RK3368_GPIO2D1_UART0_SOUT); +#endif +} + +void board_init_f(ulong dummy) +{ + struct udevice *dev; + int ret; + +#define EARLY_UART +#ifdef EARLY_UART + /* + * Debug UART can be used from here if required: + * + * debug_uart_init(); + * printch('a'); + * printhex8(0x1234); + * printascii("string"); + */ + debug_uart_init(); + printascii("U-Boot TPL board init\n"); +#endif + + ret = spl_early_init(); + if (ret) { + debug("spl_early_init() failed: %d\n", ret); + hang(); + } + + /* Make sure the ARMv8 generic timer counts */ + secure_timer_init(); + /* Reset security, so we can use DMA in the MMC drivers */ + sgrf_init(); + + ret = uclass_get_device(UCLASS_RAM, 0, &dev); + if (ret) { + debug("DRAM init failed: %d\n", ret); + return; + } +} + +void board_return_to_bootrom(void) +{ + back_to_bootrom(); +} + +u32 spl_boot_device(void) +{ + return BOOT_DEVICE_BOOTROM; +} + diff --git a/arch/arm/mach-rockchip/rk3368/u-boot-tpl.lds b/arch/arm/mach-rockchip/rk3368/u-boot-tpl.lds new file mode 100644 index 0000000..cc59844 --- /dev/null +++ b/arch/arm/mach-rockchip/rk3368/u-boot-tpl.lds @@ -0,0 +1,13 @@ +/* + * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#undef CONFIG_SPL_TEXT_BASE +#define CONFIG_SPL_TEXT_BASE CONFIG_TPL_TEXT_BASE + +#undef CONFIG_SPL_MAX_SIZE +#define CONFIG_SPL_MAX_SIZE CONFIG_TPL_MAX_SIZE + +#include "../../cpu/armv8/u-boot-spl.lds"