diff options
| -rw-r--r-- | arch/arm/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-imx8/boot0.h | 21 |
2 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index c5027c1338f..1df2aba3c2d 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -788,6 +788,7 @@ config ARCH_IMX8 select ARM64 select DM select OF_CONTROL + select ENABLE_ARM_SOC_BOOT0_HOOK config ARCH_IMX8M bool "NXP i.MX8M platform" diff --git a/arch/arm/include/asm/arch-imx8/boot0.h b/arch/arm/include/asm/arch-imx8/boot0.h new file mode 100644 index 00000000000..5ce781adb75 --- /dev/null +++ b/arch/arm/include/asm/arch-imx8/boot0.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2019 NXP + */ + +#if defined(CONFIG_SPL_BUILD) + /* + * We use absolute address not PC relative address to jump. + * When running SPL on iMX8, the A core starts at address 0, a alias to OCRAM 0x100000, + * our linker address for SPL is from 0x100000. So using absolute address can jump to + * the OCRAM address from the alias. + * The alias only map first 96KB of OCRAM, so this require the SPL size can't beyond 96KB. + * But when using SPL DM, the size increase significantly and may exceed 96KB. + * That's why we have to jump to OCRAM. + */ + + ldr x0, =reset + br x0 +#else + b reset +#endif |