The rk3188 needs 3 uboot stages: a tpl living in 1KB of sram, a spl the resides in the rest of the sram and loads the regular uboot living in regular ram.
Signed-off-by: Heiko Stuebner heiko@sntech.de --- arch/arm/mach-rockchip/Makefile | 7 +- arch/arm/mach-rockchip/rk3188-board-spl.c | 220 ++++++++++++++++++++++++++++++ arch/arm/mach-rockchip/rk3188-board-tpl.c | 87 ++++++++++++ arch/arm/mach-rockchip/rk3188-board.c | 71 ++++++++++ 4 files changed, 384 insertions(+), 1 deletion(-) create mode 100644 arch/arm/mach-rockchip/rk3188-board-spl.c create mode 100644 arch/arm/mach-rockchip/rk3188-board-tpl.c create mode 100644 arch/arm/mach-rockchip/rk3188-board.c
diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile index 2be7e14e3e..7b8abc2266 100644 --- a/arch/arm/mach-rockchip/Makefile +++ b/arch/arm/mach-rockchip/Makefile @@ -4,11 +4,16 @@ # SPDX-License-Identifier: GPL-2.0+ #
-ifdef CONFIG_SPL_BUILD +ifdef CONFIG_TPL_BUILD +obj-$(CONFIG_ROCKCHIP_RK3188) += rk3188-board-tpl.o +obj-$(CONFIG_ROCKCHIP_BROM_HELPER) += save_boot_param.o +else ifdef CONFIG_SPL_BUILD obj-$(CONFIG_ROCKCHIP_RK3036) += rk3036-board-spl.o +obj-$(CONFIG_ROCKCHIP_RK3188) += rk3188-board-spl.o obj-$(CONFIG_ROCKCHIP_RK3288) += rk3288-board-spl.o obj-$(CONFIG_ROCKCHIP_BROM_HELPER) += save_boot_param.o else +obj-$(CONFIG_ROCKCHIP_RK3188) += rk3188-board.o obj-$(CONFIG_ROCKCHIP_RK3288) += rk3288-board.o obj-$(CONFIG_ROCKCHIP_RK3036) += rk3036-board.o endif diff --git a/arch/arm/mach-rockchip/rk3188-board-spl.c b/arch/arm/mach-rockchip/rk3188-board-spl.c new file mode 100644 index 0000000000..b528a2f73d --- /dev/null +++ b/arch/arm/mach-rockchip/rk3188-board-spl.c @@ -0,0 +1,220 @@ +/* + * (C) Copyright 2015 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <debug_uart.h> +#include <dm.h> +#include <fdtdec.h> +#include <led.h> +#include <malloc.h> +#include <ram.h> +#include <spl.h> +#include <asm/gpio.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/hardware.h> +#include <asm/arch/periph.h> +#include <asm/arch/pmu_rk3188.h> +#include <asm/arch/sdram.h> +#include <asm/arch/timer.h> +#include <dm/pinctrl.h> +#include <dm/root.h> +#include <dm/test.h> +#include <dm/util.h> +#include <power/regulator.h> +#include <syscon.h> + +DECLARE_GLOBAL_DATA_PTR; + +u32 spl_boot_device(void) +{ +#if !CONFIG_IS_ENABLED(OF_PLATDATA) + const void *blob = gd->fdt_blob; + struct udevice *dev; + const char *bootdev; + int node; + int ret; + + bootdev = fdtdec_get_config_string(blob, "u-boot,boot0"); + debug("Boot device %s\n", bootdev); + if (!bootdev) + goto fallback; + + node = fdt_path_offset(blob, bootdev); + if (node < 0) { + debug("node=%d\n", node); + goto fallback; + } + ret = device_get_global_by_of_offset(node, &dev); + if (ret) { + debug("device at node %s/%d not found: %d\n", bootdev, node, + ret); + goto fallback; + } + debug("Found device %s\n", dev->name); + switch (device_get_uclass_id(dev)) { + case UCLASS_SPI_FLASH: + return BOOT_DEVICE_SPI; + case UCLASS_MMC: + return BOOT_DEVICE_MMC1; + default: + debug("Booting from device uclass '%s' not supported\n", + dev_get_uclass_name(dev)); + } + +fallback: +#endif + return BOOT_DEVICE_MMC1; +} + +u32 spl_boot_mode(const u32 boot_device) +{ + return MMCSD_MODE_RAW; +} + +extern u32 SAVE_SP_ADDR; +extern void back_to_bootrom(void); +void board_init_f(ulong dummy) +{ + struct udevice *pinctrl, *dev; + struct rk3188_pmu *pmu; + int ret; + +#define EARLY_UART + /* Example code showing how to enable the debug UART on RK3188 */ +#ifdef EARLY_UART +#include <asm/arch/grf_rk3188.h> + /* Enable early UART on the RK3188 */ +#define GRF_BASE 0x20008000 + struct rk3188_grf * const grf = (void *)GRF_BASE; + + rk_clrsetreg(&grf->gpio1b_iomux, + GPIO1B1_MASK << GPIO1B1_SHIFT | + GPIO1B0_MASK << GPIO1B0_SHIFT, + GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT | + GPIO1B0_UART2_SIN << GPIO1B0_SHIFT); + /* + * Debug UART can be used from here if required: + * + * debug_uart_init(); + * printch('a'); + * printhex8(0x1234); + * printascii("string"); + */ + debug_uart_init(); + printch('s'); + printch('p'); + printch('l'); + printch('\n'); +#endif + + ret = spl_init(); + if (ret) { + debug("spl_init() failed: %d\n", ret); + hang(); + } + + rockchip_timer_init(); + + ret = rockchip_get_clk(&dev); + if (ret) { + debug("CLK init failed: %d\n", ret); + return; + } + + /* + * Recover the bootrom's stackpointer. + * For whatever reason needs to run after rockchip_get_clk. + */ + pmu = syscon_get_first_range(ROCKCHIP_SYSCON_PMU); + if (IS_ERR(pmu)) + error("pmu syscon returned %ld\n", PTR_ERR(pmu)); + SAVE_SP_ADDR = readl(&pmu->sys_reg[2]); + + ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); + if (ret) { + debug("Pinctrl init failed: %d\n", ret); + return; + } + + ret = uclass_get_device(UCLASS_RAM, 0, &dev); + if (ret) { + debug("DRAM init failed: %d\n", ret); + return; + } + +#if defined(CONFIG_ROCKCHIP_SPL_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT) + back_to_bootrom(); +#endif +} + +static int setup_led(void) +{ +#ifdef CONFIG_SPL_LED + struct udevice *dev; + char *led_name; + int ret; + + led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led"); + if (!led_name) + return 0; + ret = led_get_by_label(led_name, &dev); + if (ret) { + debug("%s: get=%d\n", __func__, ret); + return ret; + } + ret = led_set_on(dev, 1); + if (ret) + return ret; +#endif + + return 0; +} + +void spl_board_init(void) +{ + struct udevice *pinctrl; + int ret; + + ret = setup_led(); + if (ret) { + debug("LED ret=%d\n", ret); + hang(); + } + + ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); + if (ret) { + debug("%s: Cannot find pinctrl device\n", __func__); + goto err; + } + +#ifdef CONFIG_SPL_MMC_SUPPORT + ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD); + if (ret) { + debug("%s: Failed to set up SD card\n", __func__); + goto err; + } +#endif + + /* Enable debug UART */ + ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG); + if (ret) { + debug("%s: Failed to set up console UART\n", __func__); + goto err; + } + + preloader_console_init(); +#ifdef CONFIG_ROCKCHIP_SPL_BACK_TO_BROM + back_to_bootrom(); +#endif + return; + +err: + printf("spl_board_init: Error %d\n", ret); + + /* No way to report error here */ + hang(); +} diff --git a/arch/arm/mach-rockchip/rk3188-board-tpl.c b/arch/arm/mach-rockchip/rk3188-board-tpl.c new file mode 100644 index 0000000000..62cdb8976a --- /dev/null +++ b/arch/arm/mach-rockchip/rk3188-board-tpl.c @@ -0,0 +1,87 @@ +/* + * (C) Copyright 2015 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <debug_uart.h> +#include <spl.h> +#include <asm/io.h> +#include <asm/arch/pmu_rk3188.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* track how often we were entered */ +static int rk3188_num_entries; +extern void back_to_bootrom(void); + +#define PMU_BASE 0x20004000 +#define TPL_ENTRY 0x10080C00 +extern u32 SAVE_SP_ADDR; +static void jump_to_tpl(void) +{ + typedef void __noreturn (*image_entry_noargs_t)(void); + + struct rk3188_pmu * const pmu = (void *)PMU_BASE; + image_entry_noargs_t tpl_entry = + (image_entry_noargs_t)(unsigned long)TPL_ENTRY; + + /* Store the SAVE_SP_ADDR in a location shared with TPL. */ + writel(SAVE_SP_ADDR, &pmu->sys_reg[2]); + tpl_entry(); +} + +void board_init_f(ulong dummy) +{ +#define EARLY_UART + /* Example code showing how to enable the debug UART on RK3188 */ +#ifdef EARLY_UART +#include <asm/arch/grf_rk3188.h> + /* Enable early UART on the RK3188 */ +#define GRF_BASE 0x20008000 + struct rk3188_grf * const grf = (void *)GRF_BASE; + + rk_clrsetreg(&grf->gpio1b_iomux, + GPIO1B1_MASK << GPIO1B1_SHIFT | + GPIO1B0_MASK << GPIO1B0_SHIFT, + GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT | + GPIO1B0_UART2_SIN << GPIO1B0_SHIFT); + /* + * Debug UART can be used from here if required: + * + * debug_uart_init(); + * printch('a'); + * printhex8(0x1234); + * printascii("string"); + */ + debug_uart_init(); + + printch('t'); + printch('p'); + printch('l'); + printch('-'); + printch(rk3188_num_entries + 1 + '0'); + printch('\n'); +#endif + + rk3188_num_entries++; + + if (rk3188_num_entries == 1) { + /* + * The original loader did some very basic integrity + * checking at this point, but the remaining few bytes + * could be used for any improvement making sense + * really early on. + */ + + back_to_bootrom(); + } else { + /* + * TPL part of the loader should now wait for us + * at offset 0xC00 in the sram. Should never return + * from there. + */ + jump_to_tpl(); + } +} diff --git a/arch/arm/mach-rockchip/rk3188-board.c b/arch/arm/mach-rockchip/rk3188-board.c new file mode 100644 index 0000000000..16f38559af --- /dev/null +++ b/arch/arm/mach-rockchip/rk3188-board.c @@ -0,0 +1,71 @@ +/* + * (C) Copyright 2015 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <clk.h> +#include <dm.h> +#include <ram.h> +#include <syscon.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/periph.h> +#include <asm/arch/pmu_rk3288.h> +#include <asm/arch/boot_mode.h> +#include <asm/gpio.h> +#include <dm/pinctrl.h> + +DECLARE_GLOBAL_DATA_PTR; + +int board_init(void) +{ +#if defined(CONFIG_ROCKCHIP_SPL_BACK_TO_BROM) + struct udevice *pinctrl; + int ret; + + /* + * We need to implement sdcard iomux here for the further + * initialization, otherwise, it'll hit sdcard command sending + * timeout exception. + */ + ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); + if (ret) { + debug("%s: Cannot find pinctrl device\n", __func__); + goto err; + } + ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_SDCARD); + if (ret) { + debug("%s: Failed to set up SD card\n", __func__); + goto err; + } + + return 0; +err: + printf("board_init: Error %d\n", ret); + + /* No way to report error here */ + hang(); + + return -1; +#else + return 0; +#endif +} + +int dram_init(void) +{ + /* FIXME: read back ram size from sys_reg2 */ + gd->ram_size = 0x40000000; + + return 0; +} + +#ifndef CONFIG_SYS_DCACHE_OFF +void enable_caches(void) +{ + /* Enable D-cache. I-cache is already enabled in start.S */ + dcache_enable(); +} +#endif