diff options
| -rw-r--r-- | arch/arm/cpu/armv8/Kconfig | 6 | ||||
| -rw-r--r-- | arch/arm/cpu/armv8/Makefile | 4 | ||||
| -rw-r--r-- | arch/arm/cpu/armv8/spl_data.c | 29 | ||||
| -rw-r--r-- | arch/arm/cpu/armv8/u-boot-spl.lds | 8 | ||||
| -rw-r--r-- | arch/arm/mach-imx/imx8/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm/mach-imx/imx8/cpu.c | 5 | ||||
| -rw-r--r-- | include/spl.h | 1 |
7 files changed, 55 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/Kconfig b/arch/arm/cpu/armv8/Kconfig index 16c83e8614..3655990772 100644 --- a/arch/arm/cpu/armv8/Kconfig +++ b/arch/arm/cpu/armv8/Kconfig @@ -76,6 +76,12 @@ config SPL_ARMV8_SEC_FIRMWARE_SUPPORT help Say Y here to support this framework in SPL phase. +config SPL_RECOVER_DATA_SECTION + bool "save/restore SPL data section" + help + Say Y here to save SPL data section for cold boot, and restore + at warm boot in SPL phase. + config SEC_FIRMWARE_ARMV8_PSCI bool "PSCI implementation in secure monitor firmware" depends on ARMV8_SEC_FIRMWARE_SUPPORT || SPL_ARMV8_SEC_FIRMWARE_SUPPORT diff --git a/arch/arm/cpu/armv8/Makefile b/arch/arm/cpu/armv8/Makefile index b349b13f49..2e48df0eb9 100644 --- a/arch/arm/cpu/armv8/Makefile +++ b/arch/arm/cpu/armv8/Makefile @@ -30,6 +30,10 @@ obj-$(CONFIG_ARMV8_SPIN_TABLE) += spin_table.o spin_table_v8.o endif obj-$(CONFIG_$(SPL_)ARMV8_SEC_FIRMWARE_SUPPORT) += sec_firmware.o sec_firmware_asm.o +ifdef CONFIG_SPL_BUILD +obj-$(CONFIG_SPL_RECOVER_DATA_SECTION) += spl_data.o +endif + obj-$(CONFIG_FSL_LAYERSCAPE) += fsl-layerscape/ obj-$(CONFIG_S32V234) += s32v234/ obj-$(CONFIG_TARGET_HIKEY) += hisilicon/ diff --git a/arch/arm/cpu/armv8/spl_data.c b/arch/arm/cpu/armv8/spl_data.c new file mode 100644 index 0000000000..8fd986a67a --- /dev/null +++ b/arch/arm/cpu/armv8/spl_data.c @@ -0,0 +1,29 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2020 NXP + */ + +#include <common.h> +#include <spl.h> + +char __data_save_start[0] __section(.__data_save_start); +char __data_save_end[0] __section(.__data_save_end); + +u32 cold_reboot_flag = 1; + +void spl_save_restore_data(void) +{ + u32 data_size = __data_save_end - __data_save_start; + + if (cold_reboot_flag == 1) { + /* Save data section to data_save section */ + memcpy(__data_save_start, __data_save_start - data_size, + data_size); + } else { + /* Restore the data_save section to data section */ + memcpy(__data_save_start - data_size, __data_save_start, + data_size); + } + + cold_reboot_flag++; +} diff --git a/arch/arm/cpu/armv8/u-boot-spl.lds b/arch/arm/cpu/armv8/u-boot-spl.lds index ccbf359bd1..0e67ab09d7 100644 --- a/arch/arm/cpu/armv8/u-boot-spl.lds +++ b/arch/arm/cpu/armv8/u-boot-spl.lds @@ -38,6 +38,14 @@ SECTIONS *(.data*) } >.sram +#ifdef CONFIG_SPL_RECOVER_DATA_SECTION + .data_save : { + *(.__data_save_start) + . = SIZEOF(.data); + *(.__data_save_end) + } >.sram +#endif + .u_boot_list : { . = ALIGN(8); KEEP(*(SORT(.u_boot_list*))); diff --git a/arch/arm/mach-imx/imx8/Kconfig b/arch/arm/mach-imx/imx8/Kconfig index 69149d3cd5..9d1f73dfc7 100644 --- a/arch/arm/mach-imx/imx8/Kconfig +++ b/arch/arm/mach-imx/imx8/Kconfig @@ -18,11 +18,13 @@ config MU_BASE_SPL config IMX8QM select IMX8 select SUPPORT_SPL + select SPL_RECOVER_DATA_SECTION bool config IMX8QXP select IMX8 select SUPPORT_SPL + select SPL_RECOVER_DATA_SECTION bool config SYS_SOC diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c index 3bd0dee025..e03193cb4c 100644 --- a/arch/arm/mach-imx/imx8/cpu.c +++ b/arch/arm/mach-imx/imx8/cpu.c @@ -13,6 +13,7 @@ #include <dm/lists.h> #include <dm/uclass.h> #include <errno.h> +#include <spl.h> #include <thermal.h> #include <asm/arch/sci/sci.h> #include <asm/arch/sys_proto.h> @@ -39,6 +40,10 @@ struct pass_over_info_t *get_pass_over_info(void) int arch_cpu_init(void) { +#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_RECOVER_DATA_SECTION) + spl_save_restore_data(); +#endif + #ifdef CONFIG_SPL_BUILD struct pass_over_info_t *pass_over; diff --git a/include/spl.h b/include/spl.h index 6bf9fd8beb..90395fedb0 100644 --- a/include/spl.h +++ b/include/spl.h @@ -582,4 +582,5 @@ void spl_perform_fixups(struct spl_image_info *spl_image); */ struct image_header *spl_get_load_buffer(ssize_t offset, size_t size); +void spl_save_restore_data(void); #endif |