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| author | Thomas Abraham <thomas.ab@samsung.com> | 2016-11-16 18:49:16 +0530 |
|---|---|---|
| committer | York Sun <york.sun@nxp.com> | 2016-11-22 11:40:24 -0800 |
| commit | 95e74a3df75bf01eaf69f5c28f9aa2db6568e901 (patch) | |
| tree | 948616bcce8d8b0f894d26972c16c160ce19fc4a | |
| parent | e87c673c206aa3eb75eb94e65d8d50d7fabaf598 (diff) | |
| download | u-boot-imx-95e74a3df75bf01eaf69f5c28f9aa2db6568e901.zip u-boot-imx-95e74a3df75bf01eaf69f5c28f9aa2db6568e901.tar.gz u-boot-imx-95e74a3df75bf01eaf69f5c28f9aa2db6568e901.tar.bz2 | |
arm: exynos7420: remove custome low level init function
Remove the custom low-level initialization function and reuse the
default low-level initialization function. But this requires the
ARMV8_MULTIENTRY config option to be enabled for Exynos7420.
On Exynos7420, the boot CPU belongs to the second cluster and so
with ARMV8_MULTIENTRY config option enabled, the 'branch_if_master'
macro fails to detect the CPU as boot CPU. As a temporary workaround
the CPU_RELEASE_ADDR is set to point to '_main'.
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Alison Wang <alison.wang@nxp.com>
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Reviewed-by: Alison Wang <alison.wang@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
| -rw-r--r-- | arch/arm/mach-exynos/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-exynos/soc.c | 18 | ||||
| -rw-r--r-- | include/configs/exynos7420-common.h | 1 |
3 files changed, 12 insertions, 8 deletions
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig index ce2a16f..07118fc 100644 --- a/arch/arm/mach-exynos/Kconfig +++ b/arch/arm/mach-exynos/Kconfig @@ -126,6 +126,7 @@ choice config TARGET_ESPRESSO7420 bool "ESPRESSO7420 board" select ARM64 + select ARMV8_MULTIENTRY select SUPPORT_SPL select OF_CONTROL select SPL_DISABLE_OF_CONTROL diff --git a/arch/arm/mach-exynos/soc.c b/arch/arm/mach-exynos/soc.c index f9c7468..cf149ad 100644 --- a/arch/arm/mach-exynos/soc.c +++ b/arch/arm/mach-exynos/soc.c @@ -9,6 +9,16 @@ #include <asm/io.h> #include <asm/system.h> +#ifdef CONFIG_TARGET_ESPRESSO7420 +/* + * Exynos7420 uses CPU0 of Cluster-1 as boot CPU. Due to this, branch_if_master + * fails to identify as the boot CPU as the master CPU. As temporary workaround, + * setup the slave CPU boot address as "_main". + */ +extern void _main(void); +void *secondary_boot_addr = (void *)_main; +#endif /* CONFIG_TARGET_ESPRESSO7420 */ + void reset_cpu(ulong addr) { #ifdef CONFIG_CPU_V7 @@ -23,11 +33,3 @@ void enable_caches(void) dcache_enable(); } #endif - -#ifdef CONFIG_ARM64 -void lowlevel_init(void) -{ - armv8_switch_to_el2(); - armv8_switch_to_el1(); -} -#endif diff --git a/include/configs/exynos7420-common.h b/include/configs/exynos7420-common.h index f7c4709..1cea74e 100644 --- a/include/configs/exynos7420-common.h +++ b/include/configs/exynos7420-common.h @@ -47,6 +47,7 @@ #define CONFIG_IRAM_BASE 0x02100000 #define CONFIG_IRAM_SIZE 0x58000 #define CONFIG_IRAM_END (CONFIG_IRAM_BASE + CONFIG_IRAM_SIZE) +#define CPU_RELEASE_ADDR secondary_boot_addr /* Number of CPUs available */ #define CONFIG_CORE_COUNT 0x8 |