imx: mx7ulp: Add soc level initialization codes and functions
Implement soc level functions to get cpu rev, reset cause, enable cache, etc. We will disable the wdog and init clocks in s_init at very early u-boot phase. Since the we are seeking the way to get chip id for mx7ulp, the get_cpu_rev is hard coded to a fixed value. This may change in future. Reuse some code in imx-common. Signed-off-by: NPeng Fan <peng.fan@nxp.com> Signed-off-by: NYe Li <ye.li@nxp.com> Cc: Stefano Babic <sbabic@denx.de>
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arch/arm/cpu/armv7/mx7ulp/soc.c
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