diff options
Diffstat (limited to 'arch/arm/mach-stm32mp/stm32mp1/spl.c')
| -rw-r--r-- | arch/arm/mach-stm32mp/stm32mp1/spl.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/arch/arm/mach-stm32mp/stm32mp1/spl.c b/arch/arm/mach-stm32mp/stm32mp1/spl.c new file mode 100644 index 0000000..6c79259 --- /dev/null +++ b/arch/arm/mach-stm32mp/stm32mp1/spl.c @@ -0,0 +1,252 @@ +// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause +/* + * Copyright (C) 2018, STMicroelectronics - All Rights Reserved + */ + +#define LOG_CATEGORY LOGC_ARCH + +#include <common.h> +#include <cpu_func.h> +#include <dm.h> +#include <hang.h> +#include <init.h> +#include <log.h> +#include <ram.h> +#include <spl.h> +#include <asm/cache.h> +#include <asm/global_data.h> +#include <asm/io.h> +#include <asm/arch/sys_proto.h> +#include <mach/tzc.h> +#include <linux/libfdt.h> + +u32 spl_boot_device(void) +{ + u32 boot_mode; + + boot_mode = get_bootmode(); + + switch (boot_mode) { + case BOOT_FLASH_SD_1: + case BOOT_FLASH_EMMC_1: + return BOOT_DEVICE_MMC1; + case BOOT_FLASH_SD_2: + case BOOT_FLASH_EMMC_2: + return BOOT_DEVICE_MMC2; + case BOOT_SERIAL_UART_1: + case BOOT_SERIAL_UART_2: + case BOOT_SERIAL_UART_3: + case BOOT_SERIAL_UART_4: + case BOOT_SERIAL_UART_5: + case BOOT_SERIAL_UART_6: + case BOOT_SERIAL_UART_7: + case BOOT_SERIAL_UART_8: + return BOOT_DEVICE_UART; + case BOOT_SERIAL_USB_OTG: + return BOOT_DEVICE_DFU; + case BOOT_FLASH_NAND_FMC: + return BOOT_DEVICE_NAND; + case BOOT_FLASH_NOR_QSPI: + return BOOT_DEVICE_SPI; + case BOOT_FLASH_SPINAND_1: + return BOOT_DEVICE_NONE; /* SPINAND not supported in SPL */ + } + + return BOOT_DEVICE_MMC1; +} + +u32 spl_mmc_boot_mode(struct mmc *mmc, const u32 boot_device) +{ + return MMCSD_MODE_RAW; +} + +#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION +int spl_mmc_boot_partition(const u32 boot_device) +{ + switch (boot_device) { + case BOOT_DEVICE_MMC1: + return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION; + case BOOT_DEVICE_MMC2: + return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_MMC2; + default: + return -EINVAL; + } +} +#endif + +#ifdef CONFIG_SPL_DISPLAY_PRINT +void spl_display_print(void) +{ + DECLARE_GLOBAL_DATA_PTR; + const char *model; + + /* same code than show_board_info() but not compiled for SPL + * see CONFIG_DISPLAY_BOARDINFO & common/board_info.c + */ + model = fdt_getprop(gd->fdt_blob, 0, "model", NULL); + if (model) + log_info("Model: %s\n", model); +} +#endif + +__weak int board_early_init_f(void) +{ + return 0; +} + +uint32_t stm32mp_get_dram_size(void) +{ + struct ram_info ram; + struct udevice *dev; + int ret; + + if (uclass_get_device(UCLASS_RAM, 0, &dev)) + return 0; + + ret = ram_get_info(dev, &ram); + if (ret) + return 0; + + return ram.size; +} + +static int optee_get_reserved_memory(uint32_t *start, uint32_t *size) +{ + fdt_addr_t fdt_mem_size; + fdt_addr_t fdt_start; + ofnode node; + + node = ofnode_path("/reserved-memory/optee"); + if (!ofnode_valid(node)) + return 0; + + fdt_start = ofnode_get_addr_size(node, "reg", &fdt_mem_size); + *start = fdt_start; + *size = fdt_mem_size; + return (fdt_start < 0) ? fdt_start : 0; +} + +#define CFG_SHMEM_SIZE 0x200000 +#define STM32_TZC_NSID_ALL 0xffff +#define STM32_TZC_FILTER_ALL 3 + +void stm32_init_tzc_for_optee(void) +{ + const uint32_t dram_size = stm32mp_get_dram_size(); + const uintptr_t dram_top = STM32_DDR_BASE + (dram_size - 1); + uint32_t optee_base, optee_size, tee_shmem_base; + const uintptr_t tzc = STM32_TZC_BASE; + int ret; + + if (dram_size == 0) + panic("Cannot determine DRAM size from devicetree\n"); + + ret = optee_get_reserved_memory(&optee_base, &optee_size); + if (ret < 0 || optee_size <= CFG_SHMEM_SIZE) + panic("Invalid OPTEE reserved memory in devicetree\n"); + + tee_shmem_base = optee_base + optee_size - CFG_SHMEM_SIZE; + + const struct tzc_region optee_config[] = { + { + .base = STM32_DDR_BASE, + .top = optee_base - 1, + .sec_mode = TZC_ATTR_SEC_NONE, + .nsec_id = STM32_TZC_NSID_ALL, + .filters_mask = STM32_TZC_FILTER_ALL, + }, { + .base = optee_base, + .top = tee_shmem_base - 1, + .sec_mode = TZC_ATTR_SEC_RW, + .nsec_id = 0, + .filters_mask = STM32_TZC_FILTER_ALL, + }, { + .base = tee_shmem_base, + .top = dram_top, + .sec_mode = TZC_ATTR_SEC_NONE, + .nsec_id = STM32_TZC_NSID_ALL, + .filters_mask = STM32_TZC_FILTER_ALL, + }, { + .top = 0, + } + }; + + flush_dcache_all(); + + tzc_configure(tzc, optee_config); + tzc_dump_config(tzc); + + dcache_disable(); +} + +void spl_board_prepare_for_optee(void *fdt) +{ + stm32_init_tzc_for_optee(); +} + +void board_init_f(ulong dummy) +{ + struct udevice *dev; + int ret; + + arch_cpu_init(); + mach_cpu_init(); + + ret = spl_early_init(); + if (ret) { + log_debug("spl_early_init() failed: %d\n", ret); + hang(); + } + + ret = uclass_get_device(UCLASS_CLK, 0, &dev); + if (ret) { + log_debug("Clock init failed: %d\n", ret); + hang(); + } + + ret = uclass_get_device(UCLASS_RESET, 0, &dev); + if (ret) { + log_debug("Reset init failed: %d\n", ret); + hang(); + } + + ret = uclass_get_device(UCLASS_PINCTRL, 0, &dev); + if (ret) { + log_debug("%s: Cannot find pinctrl device\n", __func__); + hang(); + } + + /* enable console uart printing */ + preloader_console_init(); + + ret = board_early_init_f(); + if (ret) { + log_debug("board_early_init_f() failed: %d\n", ret); + hang(); + } + + ret = uclass_get_device(UCLASS_RAM, 0, &dev); + if (ret) { + log_err("DRAM init failed: %d\n", ret); + hang(); + } + + /* + * activate cache on DDR only when DDR is fully initialized + * to avoid speculative access and issue in get_ram_size() + */ + if (!CONFIG_IS_ENABLED(SYS_DCACHE_OFF)) + mmu_set_region_dcache_behaviour(STM32_DDR_BASE, + CONFIG_DDR_CACHEABLE_SIZE, + DCACHE_DEFAULT_OPTION); +} + +void spl_board_prepare_for_boot(void) +{ + dcache_disable(); +} + +void spl_board_prepare_for_linux(void) +{ + dcache_disable(); +} |