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imx: mx7: avoid some initialization if low level is skipped

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We can have the case where u-boot is launched after some other low level
enabler, like for example when u-boot runs after arm-trusted-firmware
and/or optee. So, because of that we may need to jump the initialization of
some IP blocks even because we may no longer have the permission for that.

So, if the config option to skip low level init is set disable also timer,
board and csu initialization.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: u-boot@lists.denx.de
Reviewed-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Rui Miguel Silva 2018-09-05 11:56:05 +01:00 committed by Stefano Babic
parent 7677c0de14
commit be277c3a89
2 changed files with 4 additions and 0 deletions
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2
arch/arm/mach-imx/mx7/soc.c
View File

@ -164,6 +164,7 @@ u32 __weak get_board_rev(void)
}
#endif
#ifndef CONFIG_SKIP_LOWLEVEL_INIT
/* enable all periherial can be accessed in nosec mode */
static void init_csu(void)
{
@ -285,6 +286,7 @@ int arch_cpu_init(void)
return 0;
}
#endif
#ifdef CONFIG_ARCH_MISC_INIT
int arch_misc_init(void)

2
arch/arm/mach-imx/syscounter.c
View File

@ -55,6 +55,7 @@ static inline unsigned long long us_to_tick(unsigned long long usec)
return usec;
}
#ifndef CONFIG_SKIP_LOWLEVEL_INIT
int timer_init(void)
{
struct sctr_regs *sctr = (struct sctr_regs *)SCTR_BASE_ADDR;
@ -76,6 +77,7 @@ int timer_init(void)
return 0;
}
#endif
unsigned long long get_ticks(void)
{