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| author | Simon Glass <sjg@chromium.org> | 2011-11-05 03:56:49 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-12-09 17:30:08 +0100 |
| commit | e43d6ed932a4fbeb4c53a66bd2b7fc1f802a810e (patch) | |
| tree | ca747026048461807a371896aff6cdbc9d96ed3e /arch/arm | |
| parent | 5fac236a9703827666df452f093d2849625afd4d (diff) | |
| download | u-boot-imx-e43d6ed932a4fbeb4c53a66bd2b7fc1f802a810e.zip u-boot-imx-e43d6ed932a4fbeb4c53a66bd2b7fc1f802a810e.tar.gz u-boot-imx-e43d6ed932a4fbeb4c53a66bd2b7fc1f802a810e.tar.bz2 | |
tegra2: Add arch_cpu_init() to fire up Cortex-A9
We want to move away from a special Tegra2 start-up, and just use
arch_cpu_init() instead. However, if we run board_init_f() from boot
we need to build it for ARMv4T, since the Tegra's AVP start-up CPU
does not support ARMv7.
The effect of this is to do the AVP init earlier, and in
arch_cpu_init(), rather that board_early_init_f().
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/armv7/tegra2/board.c | 15 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/tegra2/config.mk | 6 |
2 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/tegra2/board.c b/arch/arm/cpu/armv7/tegra2/board.c index 751102d..4530194 100644 --- a/arch/arm/cpu/armv7/tegra2/board.c +++ b/arch/arm/cpu/armv7/tegra2/board.c @@ -23,6 +23,7 @@ #include <common.h> #include <asm/io.h> +#include "ap20.h" #include <asm/arch/sys_proto.h> #include <asm/arch/tegra2.h> #include <asm/arch/pmc.h> @@ -86,3 +87,17 @@ int checkboard(void) return 0; } #endif /* CONFIG_DISPLAY_BOARDINFO */ + +#ifdef CONFIG_ARCH_CPU_INIT +/* + * Note this function is executed by the ARM7TDMI AVP. It does not return + * in this case. It is also called once the A9 starts up, but does nothing in + * that case. + */ +int arch_cpu_init(void) +{ + /* Fire up the Cortex A9 */ + tegra2_start(); + return 0; +} +#endif diff --git a/arch/arm/cpu/armv7/tegra2/config.mk b/arch/arm/cpu/armv7/tegra2/config.mk index 96c0795..f84fdc8 100644 --- a/arch/arm/cpu/armv7/tegra2/config.mk +++ b/arch/arm/cpu/armv7/tegra2/config.mk @@ -26,3 +26,9 @@ # Use ARMv4 for Tegra2 - initial code runs on the AVP, which is an ARM7TDI. PLATFORM_CPPFLAGS += -march=armv4 + +# Tegra has an ARMv4T CPU which runs board_init_f(), so we must build this +# file with compatible flags +ifdef CONFIG_TEGRA2 +CFLAGS_arch/arm/lib/board.o += -march=armv4t +endif |