[PATCH] ARM: LS1021A: slow boot

[PATCH] ARM: LS1021A: slow boot

[Renaud Barbier]

It was noticed that the LS1021A-IOT was slow to boot and perform
computing intensive operations. Enable SMP so the cortex-a7 cache
works as expected.

Signed-off-by: Renaud Barbier mailto:renaud.barbier@ametek.com
---
 arch/arm/boards/ls1021aiot/lowlevel.c       | 1 -
 arch/arm/mach-layerscape/lowlevel-ls102xa.c | 4 ++++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boards/ls1021aiot/lowlevel.c b/arch/arm/boards/ls1021aiot/lowlevel.c
index 4dec451558..b7106887f2 100644
--- a/arch/arm/boards/ls1021aiot/lowlevel.c
+++ b/arch/arm/boards/ls1021aiot/lowlevel.c
@@ -86,7 +86,6 @@ static noinline __noreturn void ls1021aiot_r_entry(void)
                  __dtb_fsl_ls1021a_iot_start);
    }

-   arm_cpu_lowlevel_init();
    ls102xa_init_lowlevel();
    ls102xa_debug_ll_init();

diff --git a/arch/arm/mach-layerscape/lowlevel-ls102xa.c b/arch/arm/mach-layerscape/lowlevel-ls102xa.c
index 7f4fcdf55c..259d8866d5 100644
--- a/arch/arm/mach-layerscape/lowlevel-ls102xa.c
+++ b/arch/arm/mach-layerscape/lowlevel-ls102xa.c
@@ -6,6 +6,7 @@
 #include <common.h>
 #include <io.h>
 #include <clock.h>
+#include <asm/barebox-arm-head.h>
 #include <asm/syscounter.h>
 #include <asm/system.h>
 #include <mach/layerscape/errata.h>
@@ -311,6 +312,9 @@ void ls102xa_init_lowlevel(void)
    uint32_t state, major, ctrl, freq;
    uint64_t val;

+   cortex_a7_lowlevel_init();
+   arm_cpu_lowlevel_init();
+
    init_csu();

    writel(SYS_COUNTER_CTRL_ENABLE, LSCH2_SYS_COUNTER_ADDR);
--
2.34.1

Re: [PATCH] ARM: LS1021A: slow boot

[Sascha Hauer]

On Mon, Apr 10, 2023 at 02:58:08PM +0000, Renaud Barbier wrote:
> It was noticed that the LS1021A-IOT was slow to boot and perform
> computing intensive operations. Enable SMP so the cortex-a7 cache
> works as expected.
> 
> Signed-off-by: Renaud Barbier mailto:renaud.barbier@ametek.com
> ---
>  arch/arm/boards/ls1021aiot/lowlevel.c       | 1 -
>  arch/arm/mach-layerscape/lowlevel-ls102xa.c | 4 ++++
>  2 files changed, 4 insertions(+), 1 deletion(-)

Applied, thanks

Sascha

> 
> diff --git a/arch/arm/boards/ls1021aiot/lowlevel.c b/arch/arm/boards/ls1021aiot/lowlevel.c
> index 4dec451558..b7106887f2 100644
> --- a/arch/arm/boards/ls1021aiot/lowlevel.c
> +++ b/arch/arm/boards/ls1021aiot/lowlevel.c
> @@ -86,7 +86,6 @@ static noinline __noreturn void ls1021aiot_r_entry(void)
>                   __dtb_fsl_ls1021a_iot_start);
>     }
> 
> -   arm_cpu_lowlevel_init();
>     ls102xa_init_lowlevel();
>     ls102xa_debug_ll_init();
> 
> diff --git a/arch/arm/mach-layerscape/lowlevel-ls102xa.c b/arch/arm/mach-layerscape/lowlevel-ls102xa.c
> index 7f4fcdf55c..259d8866d5 100644
> --- a/arch/arm/mach-layerscape/lowlevel-ls102xa.c
> +++ b/arch/arm/mach-layerscape/lowlevel-ls102xa.c
> @@ -6,6 +6,7 @@
>  #include <common.h>
>  #include <io.h>
>  #include <clock.h>
> +#include <asm/barebox-arm-head.h>
>  #include <asm/syscounter.h>
>  #include <asm/system.h>
>  #include <mach/layerscape/errata.h>
> @@ -311,6 +312,9 @@ void ls102xa_init_lowlevel(void)
>     uint32_t state, major, ctrl, freq;
>     uint64_t val;
> 
> +   cortex_a7_lowlevel_init();
> +   arm_cpu_lowlevel_init();
> +
>     init_csu();
> 
>     writel(SYS_COUNTER_CTRL_ENABLE, LSCH2_SYS_COUNTER_ADDR);
> --
> 2.34.1
> 
> 

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