[PATCH] ARM: imx: Enable instruction cache early on on i.MX8M
Stefano Babic
sbabic at denx.de
Tue Apr 12 12:27:50 CEST 2022
Hi Marek,
On 03.04.22 23:24, Marek Vasut wrote:
> Enable instruction cache early on to speed up the boot process on i.MX8M.
>
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Fabio Estevam <festevam at gmail.com>
> Cc: Peng Fan <peng.fan at nxp.com>
> Cc: Stefano Babic <sbabic at denx.de>
> ---
> arch/arm/mach-imx/imx8m/soc.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c
> index a41afc5b4f8..6fd4377f1c2 100644
> --- a/arch/arm/mach-imx/imx8m/soc.c
> +++ b/arch/arm/mach-imx/imx8m/soc.c
> @@ -514,6 +514,9 @@ int arch_cpu_init_dm(void)
> int arch_cpu_init(void)
> {
> struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
> +
> + icache_enable();
> +
> /*
> * ROM might disable clock for SCTR,
> * enable the clock before timer_init.
This does not seem enough because many boards do not find icache_enable,
for example imx8mp_rsb3720a1_4G (but there are many others). Can you
check it and repost ? Thanks !
+====================================================
+aarch64-linux-ld.bfd: arch/arm/mach-imx/imx8m/soc.o: in function
`arch_cpu_init':
+arch/arm/mach-imx/imx8m/soc.c:554: undefined reference to `icache_enable'
+make[2]: *** [scripts/Makefile.spl:512: spl/u-boot-spl] Error 1
+make[1]: *** [Makefile:2105: spl/u-boot-spl] Error 2
+make: *** [Makefile:177: sub-make] Error 2
Best regards,
Stefano
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